www/www-1: gtc/d3.js annotate

annotate gtc/d3.js @ 124:9b57b90aea31

initial add for pics3

author	paulo
date	Thu, 25 Mar 2021 00:33:42 -0700
parents
children

rev	line source
paulo@89	1 !function() {
paulo@89	2 var d3 = {
paulo@89	3 version: "3.5.17"
paulo@89	4 };
paulo@89	5 var d3_arraySlice = [].slice, d3_array = function(list) {
paulo@89	6 return d3_arraySlice.call(list);
paulo@89	7 };
paulo@89	8 var d3_document = this.document;
paulo@89	9 function d3_documentElement(node) {
paulo@89	10 return node && (node.ownerDocument \|\| node.document \|\| node).documentElement;
paulo@89	11 }
paulo@89	12 function d3_window(node) {
paulo@89	13 return node && (node.ownerDocument && node.ownerDocument.defaultView \|\| node.document && node \|\| node.defaultView);
paulo@89	14 }
paulo@89	15 if (d3_document) {
paulo@89	16 try {
paulo@89	17 d3_array(d3_document.documentElement.childNodes)[0].nodeType;
paulo@89	18 } catch (e) {
paulo@89	19 d3_array = function(list) {
paulo@89	20 var i = list.length, array = new Array(i);
paulo@89	21 while (i--) array[i] = list[i];
paulo@89	22 return array;
paulo@89	23 };
paulo@89	24 }
paulo@89	25 }
paulo@89	26 if (!Date.now) Date.now = function() {
paulo@89	27 return +new Date();
paulo@89	28 };
paulo@89	29 if (d3_document) {
paulo@89	30 try {
paulo@89	31 d3_document.createElement("DIV").style.setProperty("opacity", 0, "");
paulo@89	32 } catch (error) {
paulo@89	33 var d3_element_prototype = this.Element.prototype, d3_element_setAttribute = d3_element_prototype.setAttribute, d3_element_setAttributeNS = d3_element_prototype.setAttributeNS, d3_style_prototype = this.CSSStyleDeclaration.prototype, d3_style_setProperty = d3_style_prototype.setProperty;
paulo@89	34 d3_element_prototype.setAttribute = function(name, value) {
paulo@89	35 d3_element_setAttribute.call(this, name, value + "");
paulo@89	36 };
paulo@89	37 d3_element_prototype.setAttributeNS = function(space, local, value) {
paulo@89	38 d3_element_setAttributeNS.call(this, space, local, value + "");
paulo@89	39 };
paulo@89	40 d3_style_prototype.setProperty = function(name, value, priority) {
paulo@89	41 d3_style_setProperty.call(this, name, value + "", priority);
paulo@89	42 };
paulo@89	43 }
paulo@89	44 }
paulo@89	45 d3.ascending = d3_ascending;
paulo@89	46 function d3_ascending(a, b) {
paulo@89	47 return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN;
paulo@89	48 }
paulo@89	49 d3.descending = function(a, b) {
paulo@89	50 return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN;
paulo@89	51 };
paulo@89	52 d3.min = function(array, f) {
paulo@89	53 var i = -1, n = array.length, a, b;
paulo@89	54 if (arguments.length === 1) {
paulo@89	55 while (++i < n) if ((b = array[i]) != null && b >= b) {
paulo@89	56 a = b;
paulo@89	57 break;
paulo@89	58 }
paulo@89	59 while (++i < n) if ((b = array[i]) != null && a > b) a = b;
paulo@89	60 } else {
paulo@89	61 while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
paulo@89	62 a = b;
paulo@89	63 break;
paulo@89	64 }
paulo@89	65 while (++i < n) if ((b = f.call(array, array[i], i)) != null && a > b) a = b;
paulo@89	66 }
paulo@89	67 return a;
paulo@89	68 };
paulo@89	69 d3.max = function(array, f) {
paulo@89	70 var i = -1, n = array.length, a, b;
paulo@89	71 if (arguments.length === 1) {
paulo@89	72 while (++i < n) if ((b = array[i]) != null && b >= b) {
paulo@89	73 a = b;
paulo@89	74 break;
paulo@89	75 }
paulo@89	76 while (++i < n) if ((b = array[i]) != null && b > a) a = b;
paulo@89	77 } else {
paulo@89	78 while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
paulo@89	79 a = b;
paulo@89	80 break;
paulo@89	81 }
paulo@89	82 while (++i < n) if ((b = f.call(array, array[i], i)) != null && b > a) a = b;
paulo@89	83 }
paulo@89	84 return a;
paulo@89	85 };
paulo@89	86 d3.extent = function(array, f) {
paulo@89	87 var i = -1, n = array.length, a, b, c;
paulo@89	88 if (arguments.length === 1) {
paulo@89	89 while (++i < n) if ((b = array[i]) != null && b >= b) {
paulo@89	90 a = c = b;
paulo@89	91 break;
paulo@89	92 }
paulo@89	93 while (++i < n) if ((b = array[i]) != null) {
paulo@89	94 if (a > b) a = b;
paulo@89	95 if (c < b) c = b;
paulo@89	96 }
paulo@89	97 } else {
paulo@89	98 while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
paulo@89	99 a = c = b;
paulo@89	100 break;
paulo@89	101 }
paulo@89	102 while (++i < n) if ((b = f.call(array, array[i], i)) != null) {
paulo@89	103 if (a > b) a = b;
paulo@89	104 if (c < b) c = b;
paulo@89	105 }
paulo@89	106 }
paulo@89	107 return [ a, c ];
paulo@89	108 };
paulo@89	109 function d3_number(x) {
paulo@89	110 return x === null ? NaN : +x;
paulo@89	111 }
paulo@89	112 function d3_numeric(x) {
paulo@89	113 return !isNaN(x);
paulo@89	114 }
paulo@89	115 d3.sum = function(array, f) {
paulo@89	116 var s = 0, n = array.length, a, i = -1;
paulo@89	117 if (arguments.length === 1) {
paulo@89	118 while (++i < n) if (d3_numeric(a = +array[i])) s += a;
paulo@89	119 } else {
paulo@89	120 while (++i < n) if (d3_numeric(a = +f.call(array, array[i], i))) s += a;
paulo@89	121 }
paulo@89	122 return s;
paulo@89	123 };
paulo@89	124 d3.mean = function(array, f) {
paulo@89	125 var s = 0, n = array.length, a, i = -1, j = n;
paulo@89	126 if (arguments.length === 1) {
paulo@89	127 while (++i < n) if (d3_numeric(a = d3_number(array[i]))) s += a; else --j;
paulo@89	128 } else {
paulo@89	129 while (++i < n) if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) s += a; else --j;
paulo@89	130 }
paulo@89	131 if (j) return s / j;
paulo@89	132 };
paulo@89	133 d3.quantile = function(values, p) {
paulo@89	134 var H = (values.length - 1) * p + 1, h = Math.floor(H), v = +values[h - 1], e = H - h;
paulo@89	135 return e ? v + e * (values[h] - v) : v;
paulo@89	136 };
paulo@89	137 d3.median = function(array, f) {
paulo@89	138 var numbers = [], n = array.length, a, i = -1;
paulo@89	139 if (arguments.length === 1) {
paulo@89	140 while (++i < n) if (d3_numeric(a = d3_number(array[i]))) numbers.push(a);
paulo@89	141 } else {
paulo@89	142 while (++i < n) if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) numbers.push(a);
paulo@89	143 }
paulo@89	144 if (numbers.length) return d3.quantile(numbers.sort(d3_ascending), .5);
paulo@89	145 };
paulo@89	146 d3.variance = function(array, f) {
paulo@89	147 var n = array.length, m = 0, a, d, s = 0, i = -1, j = 0;
paulo@89	148 if (arguments.length === 1) {
paulo@89	149 while (++i < n) {
paulo@89	150 if (d3_numeric(a = d3_number(array[i]))) {
paulo@89	151 d = a - m;
paulo@89	152 m += d / ++j;
paulo@89	153 s += d * (a - m);
paulo@89	154 }
paulo@89	155 }
paulo@89	156 } else {
paulo@89	157 while (++i < n) {
paulo@89	158 if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) {
paulo@89	159 d = a - m;
paulo@89	160 m += d / ++j;
paulo@89	161 s += d * (a - m);
paulo@89	162 }
paulo@89	163 }
paulo@89	164 }
paulo@89	165 if (j > 1) return s / (j - 1);
paulo@89	166 };
paulo@89	167 d3.deviation = function() {
paulo@89	168 var v = d3.variance.apply(this, arguments);
paulo@89	169 return v ? Math.sqrt(v) : v;
paulo@89	170 };
paulo@89	171 function d3_bisector(compare) {
paulo@89	172 return {
paulo@89	173 left: function(a, x, lo, hi) {
paulo@89	174 if (arguments.length < 3) lo = 0;
paulo@89	175 if (arguments.length < 4) hi = a.length;
paulo@89	176 while (lo < hi) {
paulo@89	177 var mid = lo + hi >>> 1;
paulo@89	178 if (compare(a[mid], x) < 0) lo = mid + 1; else hi = mid;
paulo@89	179 }
paulo@89	180 return lo;
paulo@89	181 },
paulo@89	182 right: function(a, x, lo, hi) {
paulo@89	183 if (arguments.length < 3) lo = 0;
paulo@89	184 if (arguments.length < 4) hi = a.length;
paulo@89	185 while (lo < hi) {
paulo@89	186 var mid = lo + hi >>> 1;
paulo@89	187 if (compare(a[mid], x) > 0) hi = mid; else lo = mid + 1;
paulo@89	188 }
paulo@89	189 return lo;
paulo@89	190 }
paulo@89	191 };
paulo@89	192 }
paulo@89	193 var d3_bisect = d3_bisector(d3_ascending);
paulo@89	194 d3.bisectLeft = d3_bisect.left;
paulo@89	195 d3.bisect = d3.bisectRight = d3_bisect.right;
paulo@89	196 d3.bisector = function(f) {
paulo@89	197 return d3_bisector(f.length === 1 ? function(d, x) {
paulo@89	198 return d3_ascending(f(d), x);
paulo@89	199 } : f);
paulo@89	200 };
paulo@89	201 d3.shuffle = function(array, i0, i1) {
paulo@89	202 if ((m = arguments.length) < 3) {
paulo@89	203 i1 = array.length;
paulo@89	204 if (m < 2) i0 = 0;
paulo@89	205 }
paulo@89	206 var m = i1 - i0, t, i;
paulo@89	207 while (m) {
paulo@89	208 i = Math.random() * m-- \| 0;
paulo@89	209 t = array[m + i0], array[m + i0] = array[i + i0], array[i + i0] = t;
paulo@89	210 }
paulo@89	211 return array;
paulo@89	212 };
paulo@89	213 d3.permute = function(array, indexes) {
paulo@89	214 var i = indexes.length, permutes = new Array(i);
paulo@89	215 while (i--) permutes[i] = array[indexes[i]];
paulo@89	216 return permutes;
paulo@89	217 };
paulo@89	218 d3.pairs = function(array) {
paulo@89	219 var i = 0, n = array.length - 1, p0, p1 = array[0], pairs = new Array(n < 0 ? 0 : n);
paulo@89	220 while (i < n) pairs[i] = [ p0 = p1, p1 = array[++i] ];
paulo@89	221 return pairs;
paulo@89	222 };
paulo@89	223 d3.transpose = function(matrix) {
paulo@89	224 if (!(n = matrix.length)) return [];
paulo@89	225 for (var i = -1, m = d3.min(matrix, d3_transposeLength), transpose = new Array(m); ++i < m; ) {
paulo@89	226 for (var j = -1, n, row = transpose[i] = new Array(n); ++j < n; ) {
paulo@89	227 row[j] = matrix[j][i];
paulo@89	228 }
paulo@89	229 }
paulo@89	230 return transpose;
paulo@89	231 };
paulo@89	232 function d3_transposeLength(d) {
paulo@89	233 return d.length;
paulo@89	234 }
paulo@89	235 d3.zip = function() {
paulo@89	236 return d3.transpose(arguments);
paulo@89	237 };
paulo@89	238 d3.keys = function(map) {
paulo@89	239 var keys = [];
paulo@89	240 for (var key in map) keys.push(key);
paulo@89	241 return keys;
paulo@89	242 };
paulo@89	243 d3.values = function(map) {
paulo@89	244 var values = [];
paulo@89	245 for (var key in map) values.push(map[key]);
paulo@89	246 return values;
paulo@89	247 };
paulo@89	248 d3.entries = function(map) {
paulo@89	249 var entries = [];
paulo@89	250 for (var key in map) entries.push({
paulo@89	251 key: key,
paulo@89	252 value: map[key]
paulo@89	253 });
paulo@89	254 return entries;
paulo@89	255 };
paulo@89	256 d3.merge = function(arrays) {
paulo@89	257 var n = arrays.length, m, i = -1, j = 0, merged, array;
paulo@89	258 while (++i < n) j += arrays[i].length;
paulo@89	259 merged = new Array(j);
paulo@89	260 while (--n >= 0) {
paulo@89	261 array = arrays[n];
paulo@89	262 m = array.length;
paulo@89	263 while (--m >= 0) {
paulo@89	264 merged[--j] = array[m];
paulo@89	265 }
paulo@89	266 }
paulo@89	267 return merged;
paulo@89	268 };
paulo@89	269 var abs = Math.abs;
paulo@89	270 d3.range = function(start, stop, step) {
paulo@89	271 if (arguments.length < 3) {
paulo@89	272 step = 1;
paulo@89	273 if (arguments.length < 2) {
paulo@89	274 stop = start;
paulo@89	275 start = 0;
paulo@89	276 }
paulo@89	277 }
paulo@89	278 if ((stop - start) / step === Infinity) throw new Error("infinite range");
paulo@89	279 var range = [], k = d3_range_integerScale(abs(step)), i = -1, j;
paulo@89	280 start = k, stop = k, step *= k;
paulo@89	281 if (step < 0) while ((j = start + step * ++i) > stop) range.push(j / k); else while ((j = start + step * ++i) < stop) range.push(j / k);
paulo@89	282 return range;
paulo@89	283 };
paulo@89	284 function d3_range_integerScale(x) {
paulo@89	285 var k = 1;
paulo@89	286 while (x * k % 1) k *= 10;
paulo@89	287 return k;
paulo@89	288 }
paulo@89	289 function d3_class(ctor, properties) {
paulo@89	290 for (var key in properties) {
paulo@89	291 Object.defineProperty(ctor.prototype, key, {
paulo@89	292 value: properties[key],
paulo@89	293 enumerable: false
paulo@89	294 });
paulo@89	295 }
paulo@89	296 }
paulo@89	297 d3.map = function(object, f) {
paulo@89	298 var map = new d3_Map();
paulo@89	299 if (object instanceof d3_Map) {
paulo@89	300 object.forEach(function(key, value) {
paulo@89	301 map.set(key, value);
paulo@89	302 });
paulo@89	303 } else if (Array.isArray(object)) {
paulo@89	304 var i = -1, n = object.length, o;
paulo@89	305 if (arguments.length === 1) while (++i < n) map.set(i, object[i]); else while (++i < n) map.set(f.call(object, o = object[i], i), o);
paulo@89	306 } else {
paulo@89	307 for (var key in object) map.set(key, object[key]);
paulo@89	308 }
paulo@89	309 return map;
paulo@89	310 };
paulo@89	311 function d3_Map() {
paulo@89	312 this._ = Object.create(null);
paulo@89	313 }
paulo@89	314 var d3_map_proto = "__proto__", d3_map_zero = "\x00";
paulo@89	315 d3_class(d3_Map, {
paulo@89	316 has: d3_map_has,
paulo@89	317 get: function(key) {
paulo@89	318 return this._[d3_map_escape(key)];
paulo@89	319 },
paulo@89	320 set: function(key, value) {
paulo@89	321 return this._[d3_map_escape(key)] = value;
paulo@89	322 },
paulo@89	323 remove: d3_map_remove,
paulo@89	324 keys: d3_map_keys,
paulo@89	325 values: function() {
paulo@89	326 var values = [];
paulo@89	327 for (var key in this._) values.push(this._[key]);
paulo@89	328 return values;
paulo@89	329 },
paulo@89	330 entries: function() {
paulo@89	331 var entries = [];
paulo@89	332 for (var key in this._) entries.push({
paulo@89	333 key: d3_map_unescape(key),
paulo@89	334 value: this._[key]
paulo@89	335 });
paulo@89	336 return entries;
paulo@89	337 },
paulo@89	338 size: d3_map_size,
paulo@89	339 empty: d3_map_empty,
paulo@89	340 forEach: function(f) {
paulo@89	341 for (var key in this._) f.call(this, d3_map_unescape(key), this._[key]);
paulo@89	342 }
paulo@89	343 });
paulo@89	344 function d3_map_escape(key) {
paulo@89	345 return (key += "") === d3_map_proto \|\| key[0] === d3_map_zero ? d3_map_zero + key : key;
paulo@89	346 }
paulo@89	347 function d3_map_unescape(key) {
paulo@89	348 return (key += "")[0] === d3_map_zero ? key.slice(1) : key;
paulo@89	349 }
paulo@89	350 function d3_map_has(key) {
paulo@89	351 return d3_map_escape(key) in this._;
paulo@89	352 }
paulo@89	353 function d3_map_remove(key) {
paulo@89	354 return (key = d3_map_escape(key)) in this._ && delete this._[key];
paulo@89	355 }
paulo@89	356 function d3_map_keys() {
paulo@89	357 var keys = [];
paulo@89	358 for (var key in this._) keys.push(d3_map_unescape(key));
paulo@89	359 return keys;
paulo@89	360 }
paulo@89	361 function d3_map_size() {
paulo@89	362 var size = 0;
paulo@89	363 for (var key in this._) ++size;
paulo@89	364 return size;
paulo@89	365 }
paulo@89	366 function d3_map_empty() {
paulo@89	367 for (var key in this._) return false;
paulo@89	368 return true;
paulo@89	369 }
paulo@89	370 d3.nest = function() {
paulo@89	371 var nest = {}, keys = [], sortKeys = [], sortValues, rollup;
paulo@89	372 function map(mapType, array, depth) {
paulo@89	373 if (depth >= keys.length) return rollup ? rollup.call(nest, array) : sortValues ? array.sort(sortValues) : array;
paulo@89	374 var i = -1, n = array.length, key = keys[depth++], keyValue, object, setter, valuesByKey = new d3_Map(), values;
paulo@89	375 while (++i < n) {
paulo@89	376 if (values = valuesByKey.get(keyValue = key(object = array[i]))) {
paulo@89	377 values.push(object);
paulo@89	378 } else {
paulo@89	379 valuesByKey.set(keyValue, [ object ]);
paulo@89	380 }
paulo@89	381 }
paulo@89	382 if (mapType) {
paulo@89	383 object = mapType();
paulo@89	384 setter = function(keyValue, values) {
paulo@89	385 object.set(keyValue, map(mapType, values, depth));
paulo@89	386 };
paulo@89	387 } else {
paulo@89	388 object = {};
paulo@89	389 setter = function(keyValue, values) {
paulo@89	390 object[keyValue] = map(mapType, values, depth);
paulo@89	391 };
paulo@89	392 }
paulo@89	393 valuesByKey.forEach(setter);
paulo@89	394 return object;
paulo@89	395 }
paulo@89	396 function entries(map, depth) {
paulo@89	397 if (depth >= keys.length) return map;
paulo@89	398 var array = [], sortKey = sortKeys[depth++];
paulo@89	399 map.forEach(function(key, keyMap) {
paulo@89	400 array.push({
paulo@89	401 key: key,
paulo@89	402 values: entries(keyMap, depth)
paulo@89	403 });
paulo@89	404 });
paulo@89	405 return sortKey ? array.sort(function(a, b) {
paulo@89	406 return sortKey(a.key, b.key);
paulo@89	407 }) : array;
paulo@89	408 }
paulo@89	409 nest.map = function(array, mapType) {
paulo@89	410 return map(mapType, array, 0);
paulo@89	411 };
paulo@89	412 nest.entries = function(array) {
paulo@89	413 return entries(map(d3.map, array, 0), 0);
paulo@89	414 };
paulo@89	415 nest.key = function(d) {
paulo@89	416 keys.push(d);
paulo@89	417 return nest;
paulo@89	418 };
paulo@89	419 nest.sortKeys = function(order) {
paulo@89	420 sortKeys[keys.length - 1] = order;
paulo@89	421 return nest;
paulo@89	422 };
paulo@89	423 nest.sortValues = function(order) {
paulo@89	424 sortValues = order;
paulo@89	425 return nest;
paulo@89	426 };
paulo@89	427 nest.rollup = function(f) {
paulo@89	428 rollup = f;
paulo@89	429 return nest;
paulo@89	430 };
paulo@89	431 return nest;
paulo@89	432 };
paulo@89	433 d3.set = function(array) {
paulo@89	434 var set = new d3_Set();
paulo@89	435 if (array) for (var i = 0, n = array.length; i < n; ++i) set.add(array[i]);
paulo@89	436 return set;
paulo@89	437 };
paulo@89	438 function d3_Set() {
paulo@89	439 this._ = Object.create(null);
paulo@89	440 }
paulo@89	441 d3_class(d3_Set, {
paulo@89	442 has: d3_map_has,
paulo@89	443 add: function(key) {
paulo@89	444 this._[d3_map_escape(key += "")] = true;
paulo@89	445 return key;
paulo@89	446 },
paulo@89	447 remove: d3_map_remove,
paulo@89	448 values: d3_map_keys,
paulo@89	449 size: d3_map_size,
paulo@89	450 empty: d3_map_empty,
paulo@89	451 forEach: function(f) {
paulo@89	452 for (var key in this._) f.call(this, d3_map_unescape(key));
paulo@89	453 }
paulo@89	454 });
paulo@89	455 d3.behavior = {};
paulo@89	456 function d3_identity(d) {
paulo@89	457 return d;
paulo@89	458 }
paulo@89	459 d3.rebind = function(target, source) {
paulo@89	460 var i = 1, n = arguments.length, method;
paulo@89	461 while (++i < n) target[method = arguments[i]] = d3_rebind(target, source, source[method]);
paulo@89	462 return target;
paulo@89	463 };
paulo@89	464 function d3_rebind(target, source, method) {
paulo@89	465 return function() {
paulo@89	466 var value = method.apply(source, arguments);
paulo@89	467 return value === source ? target : value;
paulo@89	468 };
paulo@89	469 }
paulo@89	470 function d3_vendorSymbol(object, name) {
paulo@89	471 if (name in object) return name;
paulo@89	472 name = name.charAt(0).toUpperCase() + name.slice(1);
paulo@89	473 for (var i = 0, n = d3_vendorPrefixes.length; i < n; ++i) {
paulo@89	474 var prefixName = d3_vendorPrefixes[i] + name;
paulo@89	475 if (prefixName in object) return prefixName;
paulo@89	476 }
paulo@89	477 }
paulo@89	478 var d3_vendorPrefixes = [ "webkit", "ms", "moz", "Moz", "o", "O" ];
paulo@89	479 function d3_noop() {}
paulo@89	480 d3.dispatch = function() {
paulo@89	481 var dispatch = new d3_dispatch(), i = -1, n = arguments.length;
paulo@89	482 while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
paulo@89	483 return dispatch;
paulo@89	484 };
paulo@89	485 function d3_dispatch() {}
paulo@89	486 d3_dispatch.prototype.on = function(type, listener) {
paulo@89	487 var i = type.indexOf("."), name = "";
paulo@89	488 if (i >= 0) {
paulo@89	489 name = type.slice(i + 1);
paulo@89	490 type = type.slice(0, i);
paulo@89	491 }
paulo@89	492 if (type) return arguments.length < 2 ? this[type].on(name) : this[type].on(name, listener);
paulo@89	493 if (arguments.length === 2) {
paulo@89	494 if (listener == null) for (type in this) {
paulo@89	495 if (this.hasOwnProperty(type)) this[type].on(name, null);
paulo@89	496 }
paulo@89	497 return this;
paulo@89	498 }
paulo@89	499 };
paulo@89	500 function d3_dispatch_event(dispatch) {
paulo@89	501 var listeners = [], listenerByName = new d3_Map();
paulo@89	502 function event() {
paulo@89	503 var z = listeners, i = -1, n = z.length, l;
paulo@89	504 while (++i < n) if (l = z[i].on) l.apply(this, arguments);
paulo@89	505 return dispatch;
paulo@89	506 }
paulo@89	507 event.on = function(name, listener) {
paulo@89	508 var l = listenerByName.get(name), i;
paulo@89	509 if (arguments.length < 2) return l && l.on;
paulo@89	510 if (l) {
paulo@89	511 l.on = null;
paulo@89	512 listeners = listeners.slice(0, i = listeners.indexOf(l)).concat(listeners.slice(i + 1));
paulo@89	513 listenerByName.remove(name);
paulo@89	514 }
paulo@89	515 if (listener) listeners.push(listenerByName.set(name, {
paulo@89	516 on: listener
paulo@89	517 }));
paulo@89	518 return dispatch;
paulo@89	519 };
paulo@89	520 return event;
paulo@89	521 }
paulo@89	522 d3.event = null;
paulo@89	523 function d3_eventPreventDefault() {
paulo@89	524 d3.event.preventDefault();
paulo@89	525 }
paulo@89	526 function d3_eventSource() {
paulo@89	527 var e = d3.event, s;
paulo@89	528 while (s = e.sourceEvent) e = s;
paulo@89	529 return e;
paulo@89	530 }
paulo@89	531 function d3_eventDispatch(target) {
paulo@89	532 var dispatch = new d3_dispatch(), i = 0, n = arguments.length;
paulo@89	533 while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
paulo@89	534 dispatch.of = function(thiz, argumentz) {
paulo@89	535 return function(e1) {
paulo@89	536 try {
paulo@89	537 var e0 = e1.sourceEvent = d3.event;
paulo@89	538 e1.target = target;
paulo@89	539 d3.event = e1;
paulo@89	540 dispatch[e1.type].apply(thiz, argumentz);
paulo@89	541 } finally {
paulo@89	542 d3.event = e0;
paulo@89	543 }
paulo@89	544 };
paulo@89	545 };
paulo@89	546 return dispatch;
paulo@89	547 }
paulo@89	548 d3.requote = function(s) {
paulo@89	549 return s.replace(d3_requote_re, "\\$&");
paulo@89	550 };
paulo@89	551 var d3_requote_re = /[\\\^\$\*\+\?\\|\[\]\(\)\.\{\}]/g;
paulo@89	552 var d3_subclass = {}.__proto__ ? function(object, prototype) {
paulo@89	553 object.__proto__ = prototype;
paulo@89	554 } : function(object, prototype) {
paulo@89	555 for (var property in prototype) object[property] = prototype[property];
paulo@89	556 };
paulo@89	557 function d3_selection(groups) {
paulo@89	558 d3_subclass(groups, d3_selectionPrototype);
paulo@89	559 return groups;
paulo@89	560 }
paulo@89	561 var d3_select = function(s, n) {
paulo@89	562 return n.querySelector(s);
paulo@89	563 }, d3_selectAll = function(s, n) {
paulo@89	564 return n.querySelectorAll(s);
paulo@89	565 }, d3_selectMatches = function(n, s) {
paulo@89	566 var d3_selectMatcher = n.matches \|\| n[d3_vendorSymbol(n, "matchesSelector")];
paulo@89	567 d3_selectMatches = function(n, s) {
paulo@89	568 return d3_selectMatcher.call(n, s);
paulo@89	569 };
paulo@89	570 return d3_selectMatches(n, s);
paulo@89	571 };
paulo@89	572 if (typeof Sizzle === "function") {
paulo@89	573 d3_select = function(s, n) {
paulo@89	574 return Sizzle(s, n)[0] \|\| null;
paulo@89	575 };
paulo@89	576 d3_selectAll = Sizzle;
paulo@89	577 d3_selectMatches = Sizzle.matchesSelector;
paulo@89	578 }
paulo@89	579 d3.selection = function() {
paulo@89	580 return d3.select(d3_document.documentElement);
paulo@89	581 };
paulo@89	582 var d3_selectionPrototype = d3.selection.prototype = [];
paulo@89	583 d3_selectionPrototype.select = function(selector) {
paulo@89	584 var subgroups = [], subgroup, subnode, group, node;
paulo@89	585 selector = d3_selection_selector(selector);
paulo@89	586 for (var j = -1, m = this.length; ++j < m; ) {
paulo@89	587 subgroups.push(subgroup = []);
paulo@89	588 subgroup.parentNode = (group = this[j]).parentNode;
paulo@89	589 for (var i = -1, n = group.length; ++i < n; ) {
paulo@89	590 if (node = group[i]) {
paulo@89	591 subgroup.push(subnode = selector.call(node, node.__data__, i, j));
paulo@89	592 if (subnode && "__data__" in node) subnode.__data__ = node.__data__;
paulo@89	593 } else {
paulo@89	594 subgroup.push(null);
paulo@89	595 }
paulo@89	596 }
paulo@89	597 }
paulo@89	598 return d3_selection(subgroups);
paulo@89	599 };
paulo@89	600 function d3_selection_selector(selector) {
paulo@89	601 return typeof selector === "function" ? selector : function() {
paulo@89	602 return d3_select(selector, this);
paulo@89	603 };
paulo@89	604 }
paulo@89	605 d3_selectionPrototype.selectAll = function(selector) {
paulo@89	606 var subgroups = [], subgroup, node;
paulo@89	607 selector = d3_selection_selectorAll(selector);
paulo@89	608 for (var j = -1, m = this.length; ++j < m; ) {
paulo@89	609 for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
paulo@89	610 if (node = group[i]) {
paulo@89	611 subgroups.push(subgroup = d3_array(selector.call(node, node.__data__, i, j)));
paulo@89	612 subgroup.parentNode = node;
paulo@89	613 }
paulo@89	614 }
paulo@89	615 }
paulo@89	616 return d3_selection(subgroups);
paulo@89	617 };
paulo@89	618 function d3_selection_selectorAll(selector) {
paulo@89	619 return typeof selector === "function" ? selector : function() {
paulo@89	620 return d3_selectAll(selector, this);
paulo@89	621 };
paulo@89	622 }
paulo@89	623 var d3_nsXhtml = "http://www.w3.org/1999/xhtml";
paulo@89	624 var d3_nsPrefix = {
paulo@89	625 svg: "http://www.w3.org/2000/svg",
paulo@89	626 xhtml: d3_nsXhtml,
paulo@89	627 xlink: "http://www.w3.org/1999/xlink",
paulo@89	628 xml: "http://www.w3.org/XML/1998/namespace",
paulo@89	629 xmlns: "http://www.w3.org/2000/xmlns/"
paulo@89	630 };
paulo@89	631 d3.ns = {
paulo@89	632 prefix: d3_nsPrefix,
paulo@89	633 qualify: function(name) {
paulo@89	634 var i = name.indexOf(":"), prefix = name;
paulo@89	635 if (i >= 0 && (prefix = name.slice(0, i)) !== "xmlns") name = name.slice(i + 1);
paulo@89	636 return d3_nsPrefix.hasOwnProperty(prefix) ? {
paulo@89	637 space: d3_nsPrefix[prefix],
paulo@89	638 local: name
paulo@89	639 } : name;
paulo@89	640 }
paulo@89	641 };
paulo@89	642 d3_selectionPrototype.attr = function(name, value) {
paulo@89	643 if (arguments.length < 2) {
paulo@89	644 if (typeof name === "string") {
paulo@89	645 var node = this.node();
paulo@89	646 name = d3.ns.qualify(name);
paulo@89	647 return name.local ? node.getAttributeNS(name.space, name.local) : node.getAttribute(name);
paulo@89	648 }
paulo@89	649 for (value in name) this.each(d3_selection_attr(value, name[value]));
paulo@89	650 return this;
paulo@89	651 }
paulo@89	652 return this.each(d3_selection_attr(name, value));
paulo@89	653 };
paulo@89	654 function d3_selection_attr(name, value) {
paulo@89	655 name = d3.ns.qualify(name);
paulo@89	656 function attrNull() {
paulo@89	657 this.removeAttribute(name);
paulo@89	658 }
paulo@89	659 function attrNullNS() {
paulo@89	660 this.removeAttributeNS(name.space, name.local);
paulo@89	661 }
paulo@89	662 function attrConstant() {
paulo@89	663 this.setAttribute(name, value);
paulo@89	664 }
paulo@89	665 function attrConstantNS() {
paulo@89	666 this.setAttributeNS(name.space, name.local, value);
paulo@89	667 }
paulo@89	668 function attrFunction() {
paulo@89	669 var x = value.apply(this, arguments);
paulo@89	670 if (x == null) this.removeAttribute(name); else this.setAttribute(name, x);
paulo@89	671 }
paulo@89	672 function attrFunctionNS() {
paulo@89	673 var x = value.apply(this, arguments);
paulo@89	674 if (x == null) this.removeAttributeNS(name.space, name.local); else this.setAttributeNS(name.space, name.local, x);
paulo@89	675 }
paulo@89	676 return value == null ? name.local ? attrNullNS : attrNull : typeof value === "function" ? name.local ? attrFunctionNS : attrFunction : name.local ? attrConstantNS : attrConstant;
paulo@89	677 }
paulo@89	678 function d3_collapse(s) {
paulo@89	679 return s.trim().replace(/\s+/g, " ");
paulo@89	680 }
paulo@89	681 d3_selectionPrototype.classed = function(name, value) {
paulo@89	682 if (arguments.length < 2) {
paulo@89	683 if (typeof name === "string") {
paulo@89	684 var node = this.node(), n = (name = d3_selection_classes(name)).length, i = -1;
paulo@89	685 if (value = node.classList) {
paulo@89	686 while (++i < n) if (!value.contains(name[i])) return false;
paulo@89	687 } else {
paulo@89	688 value = node.getAttribute("class");
paulo@89	689 while (++i < n) if (!d3_selection_classedRe(name[i]).test(value)) return false;
paulo@89	690 }
paulo@89	691 return true;
paulo@89	692 }
paulo@89	693 for (value in name) this.each(d3_selection_classed(value, name[value]));
paulo@89	694 return this;
paulo@89	695 }
paulo@89	696 return this.each(d3_selection_classed(name, value));
paulo@89	697 };
paulo@89	698 function d3_selection_classedRe(name) {
paulo@89	699 return new RegExp("(?:^\|\\s+)" + d3.requote(name) + "(?:\\s+\|$)", "g");
paulo@89	700 }
paulo@89	701 function d3_selection_classes(name) {
paulo@89	702 return (name + "").trim().split(/^\|\s+/);
paulo@89	703 }
paulo@89	704 function d3_selection_classed(name, value) {
paulo@89	705 name = d3_selection_classes(name).map(d3_selection_classedName);
paulo@89	706 var n = name.length;
paulo@89	707 function classedConstant() {
paulo@89	708 var i = -1;
paulo@89	709 while (++i < n) name[i](this, value);
paulo@89	710 }
paulo@89	711 function classedFunction() {
paulo@89	712 var i = -1, x = value.apply(this, arguments);
paulo@89	713 while (++i < n) name[i](this, x);
paulo@89	714 }
paulo@89	715 return typeof value === "function" ? classedFunction : classedConstant;
paulo@89	716 }
paulo@89	717 function d3_selection_classedName(name) {
paulo@89	718 var re = d3_selection_classedRe(name);
paulo@89	719 return function(node, value) {
paulo@89	720 if (c = node.classList) return value ? c.add(name) : c.remove(name);
paulo@89	721 var c = node.getAttribute("class") \|\| "";
paulo@89	722 if (value) {
paulo@89	723 re.lastIndex = 0;
paulo@89	724 if (!re.test(c)) node.setAttribute("class", d3_collapse(c + " " + name));
paulo@89	725 } else {
paulo@89	726 node.setAttribute("class", d3_collapse(c.replace(re, " ")));
paulo@89	727 }
paulo@89	728 };
paulo@89	729 }
paulo@89	730 d3_selectionPrototype.style = function(name, value, priority) {
paulo@89	731 var n = arguments.length;
paulo@89	732 if (n < 3) {
paulo@89	733 if (typeof name !== "string") {
paulo@89	734 if (n < 2) value = "";
paulo@89	735 for (priority in name) this.each(d3_selection_style(priority, name[priority], value));
paulo@89	736 return this;
paulo@89	737 }
paulo@89	738 if (n < 2) {
paulo@89	739 var node = this.node();
paulo@89	740 return d3_window(node).getComputedStyle(node, null).getPropertyValue(name);
paulo@89	741 }
paulo@89	742 priority = "";
paulo@89	743 }
paulo@89	744 return this.each(d3_selection_style(name, value, priority));
paulo@89	745 };
paulo@89	746 function d3_selection_style(name, value, priority) {
paulo@89	747 function styleNull() {
paulo@89	748 this.style.removeProperty(name);
paulo@89	749 }
paulo@89	750 function styleConstant() {
paulo@89	751 this.style.setProperty(name, value, priority);
paulo@89	752 }
paulo@89	753 function styleFunction() {
paulo@89	754 var x = value.apply(this, arguments);
paulo@89	755 if (x == null) this.style.removeProperty(name); else this.style.setProperty(name, x, priority);
paulo@89	756 }
paulo@89	757 return value == null ? styleNull : typeof value === "function" ? styleFunction : styleConstant;
paulo@89	758 }
paulo@89	759 d3_selectionPrototype.property = function(name, value) {
paulo@89	760 if (arguments.length < 2) {
paulo@89	761 if (typeof name === "string") return this.node()[name];
paulo@89	762 for (value in name) this.each(d3_selection_property(value, name[value]));
paulo@89	763 return this;
paulo@89	764 }
paulo@89	765 return this.each(d3_selection_property(name, value));
paulo@89	766 };
paulo@89	767 function d3_selection_property(name, value) {
paulo@89	768 function propertyNull() {
paulo@89	769 delete this[name];
paulo@89	770 }
paulo@89	771 function propertyConstant() {
paulo@89	772 this[name] = value;
paulo@89	773 }
paulo@89	774 function propertyFunction() {
paulo@89	775 var x = value.apply(this, arguments);
paulo@89	776 if (x == null) delete this[name]; else this[name] = x;
paulo@89	777 }
paulo@89	778 return value == null ? propertyNull : typeof value === "function" ? propertyFunction : propertyConstant;
paulo@89	779 }
paulo@89	780 d3_selectionPrototype.text = function(value) {
paulo@89	781 return arguments.length ? this.each(typeof value === "function" ? function() {
paulo@89	782 var v = value.apply(this, arguments);
paulo@89	783 this.textContent = v == null ? "" : v;
paulo@89	784 } : value == null ? function() {
paulo@89	785 this.textContent = "";
paulo@89	786 } : function() {
paulo@89	787 this.textContent = value;
paulo@89	788 }) : this.node().textContent;
paulo@89	789 };
paulo@89	790 d3_selectionPrototype.html = function(value) {
paulo@89	791 return arguments.length ? this.each(typeof value === "function" ? function() {
paulo@89	792 var v = value.apply(this, arguments);
paulo@89	793 this.innerHTML = v == null ? "" : v;
paulo@89	794 } : value == null ? function() {
paulo@89	795 this.innerHTML = "";
paulo@89	796 } : function() {
paulo@89	797 this.innerHTML = value;
paulo@89	798 }) : this.node().innerHTML;
paulo@89	799 };
paulo@89	800 d3_selectionPrototype.append = function(name) {
paulo@89	801 name = d3_selection_creator(name);
paulo@89	802 return this.select(function() {
paulo@89	803 return this.appendChild(name.apply(this, arguments));
paulo@89	804 });
paulo@89	805 };
paulo@89	806 function d3_selection_creator(name) {
paulo@89	807 function create() {
paulo@89	808 var document = this.ownerDocument, namespace = this.namespaceURI;
paulo@89	809 return namespace === d3_nsXhtml && document.documentElement.namespaceURI === d3_nsXhtml ? document.createElement(name) : document.createElementNS(namespace, name);
paulo@89	810 }
paulo@89	811 function createNS() {
paulo@89	812 return this.ownerDocument.createElementNS(name.space, name.local);
paulo@89	813 }
paulo@89	814 return typeof name === "function" ? name : (name = d3.ns.qualify(name)).local ? createNS : create;
paulo@89	815 }
paulo@89	816 d3_selectionPrototype.insert = function(name, before) {
paulo@89	817 name = d3_selection_creator(name);
paulo@89	818 before = d3_selection_selector(before);
paulo@89	819 return this.select(function() {
paulo@89	820 return this.insertBefore(name.apply(this, arguments), before.apply(this, arguments) \|\| null);
paulo@89	821 });
paulo@89	822 };
paulo@89	823 d3_selectionPrototype.remove = function() {
paulo@89	824 return this.each(d3_selectionRemove);
paulo@89	825 };
paulo@89	826 function d3_selectionRemove() {
paulo@89	827 var parent = this.parentNode;
paulo@89	828 if (parent) parent.removeChild(this);
paulo@89	829 }
paulo@89	830 d3_selectionPrototype.data = function(value, key) {
paulo@89	831 var i = -1, n = this.length, group, node;
paulo@89	832 if (!arguments.length) {
paulo@89	833 value = new Array(n = (group = this[0]).length);
paulo@89	834 while (++i < n) {
paulo@89	835 if (node = group[i]) {
paulo@89	836 value[i] = node.__data__;
paulo@89	837 }
paulo@89	838 }
paulo@89	839 return value;
paulo@89	840 }
paulo@89	841 function bind(group, groupData) {
paulo@89	842 var i, n = group.length, m = groupData.length, n0 = Math.min(n, m), updateNodes = new Array(m), enterNodes = new Array(m), exitNodes = new Array(n), node, nodeData;
paulo@89	843 if (key) {
paulo@89	844 var nodeByKeyValue = new d3_Map(), keyValues = new Array(n), keyValue;
paulo@89	845 for (i = -1; ++i < n; ) {
paulo@89	846 if (node = group[i]) {
paulo@89	847 if (nodeByKeyValue.has(keyValue = key.call(node, node.__data__, i))) {
paulo@89	848 exitNodes[i] = node;
paulo@89	849 } else {
paulo@89	850 nodeByKeyValue.set(keyValue, node);
paulo@89	851 }
paulo@89	852 keyValues[i] = keyValue;
paulo@89	853 }
paulo@89	854 }
paulo@89	855 for (i = -1; ++i < m; ) {
paulo@89	856 if (!(node = nodeByKeyValue.get(keyValue = key.call(groupData, nodeData = groupData[i], i)))) {
paulo@89	857 enterNodes[i] = d3_selection_dataNode(nodeData);
paulo@89	858 } else if (node !== true) {
paulo@89	859 updateNodes[i] = node;
paulo@89	860 node.__data__ = nodeData;
paulo@89	861 }
paulo@89	862 nodeByKeyValue.set(keyValue, true);
paulo@89	863 }
paulo@89	864 for (i = -1; ++i < n; ) {
paulo@89	865 if (i in keyValues && nodeByKeyValue.get(keyValues[i]) !== true) {
paulo@89	866 exitNodes[i] = group[i];
paulo@89	867 }
paulo@89	868 }
paulo@89	869 } else {
paulo@89	870 for (i = -1; ++i < n0; ) {
paulo@89	871 node = group[i];
paulo@89	872 nodeData = groupData[i];
paulo@89	873 if (node) {
paulo@89	874 node.__data__ = nodeData;
paulo@89	875 updateNodes[i] = node;
paulo@89	876 } else {
paulo@89	877 enterNodes[i] = d3_selection_dataNode(nodeData);
paulo@89	878 }
paulo@89	879 }
paulo@89	880 for (;i < m; ++i) {
paulo@89	881 enterNodes[i] = d3_selection_dataNode(groupData[i]);
paulo@89	882 }
paulo@89	883 for (;i < n; ++i) {
paulo@89	884 exitNodes[i] = group[i];
paulo@89	885 }
paulo@89	886 }
paulo@89	887 enterNodes.update = updateNodes;
paulo@89	888 enterNodes.parentNode = updateNodes.parentNode = exitNodes.parentNode = group.parentNode;
paulo@89	889 enter.push(enterNodes);
paulo@89	890 update.push(updateNodes);
paulo@89	891 exit.push(exitNodes);
paulo@89	892 }
paulo@89	893 var enter = d3_selection_enter([]), update = d3_selection([]), exit = d3_selection([]);
paulo@89	894 if (typeof value === "function") {
paulo@89	895 while (++i < n) {
paulo@89	896 bind(group = this[i], value.call(group, group.parentNode.__data__, i));
paulo@89	897 }
paulo@89	898 } else {
paulo@89	899 while (++i < n) {
paulo@89	900 bind(group = this[i], value);
paulo@89	901 }
paulo@89	902 }
paulo@89	903 update.enter = function() {
paulo@89	904 return enter;
paulo@89	905 };
paulo@89	906 update.exit = function() {
paulo@89	907 return exit;
paulo@89	908 };
paulo@89	909 return update;
paulo@89	910 };
paulo@89	911 function d3_selection_dataNode(data) {
paulo@89	912 return {
paulo@89	913 __data__: data
paulo@89	914 };
paulo@89	915 }
paulo@89	916 d3_selectionPrototype.datum = function(value) {
paulo@89	917 return arguments.length ? this.property("__data__", value) : this.property("__data__");
paulo@89	918 };
paulo@89	919 d3_selectionPrototype.filter = function(filter) {
paulo@89	920 var subgroups = [], subgroup, group, node;
paulo@89	921 if (typeof filter !== "function") filter = d3_selection_filter(filter);
paulo@89	922 for (var j = 0, m = this.length; j < m; j++) {
paulo@89	923 subgroups.push(subgroup = []);
paulo@89	924 subgroup.parentNode = (group = this[j]).parentNode;
paulo@89	925 for (var i = 0, n = group.length; i < n; i++) {
paulo@89	926 if ((node = group[i]) && filter.call(node, node.__data__, i, j)) {
paulo@89	927 subgroup.push(node);
paulo@89	928 }
paulo@89	929 }
paulo@89	930 }
paulo@89	931 return d3_selection(subgroups);
paulo@89	932 };
paulo@89	933 function d3_selection_filter(selector) {
paulo@89	934 return function() {
paulo@89	935 return d3_selectMatches(this, selector);
paulo@89	936 };
paulo@89	937 }
paulo@89	938 d3_selectionPrototype.order = function() {
paulo@89	939 for (var j = -1, m = this.length; ++j < m; ) {
paulo@89	940 for (var group = this[j], i = group.length - 1, next = group[i], node; --i >= 0; ) {
paulo@89	941 if (node = group[i]) {
paulo@89	942 if (next && next !== node.nextSibling) next.parentNode.insertBefore(node, next);
paulo@89	943 next = node;
paulo@89	944 }
paulo@89	945 }
paulo@89	946 }
paulo@89	947 return this;
paulo@89	948 };
paulo@89	949 d3_selectionPrototype.sort = function(comparator) {
paulo@89	950 comparator = d3_selection_sortComparator.apply(this, arguments);
paulo@89	951 for (var j = -1, m = this.length; ++j < m; ) this[j].sort(comparator);
paulo@89	952 return this.order();
paulo@89	953 };
paulo@89	954 function d3_selection_sortComparator(comparator) {
paulo@89	955 if (!arguments.length) comparator = d3_ascending;
paulo@89	956 return function(a, b) {
paulo@89	957 return a && b ? comparator(a.__data__, b.__data__) : !a - !b;
paulo@89	958 };
paulo@89	959 }
paulo@89	960 d3_selectionPrototype.each = function(callback) {
paulo@89	961 return d3_selection_each(this, function(node, i, j) {
paulo@89	962 callback.call(node, node.__data__, i, j);
paulo@89	963 });
paulo@89	964 };
paulo@89	965 function d3_selection_each(groups, callback) {
paulo@89	966 for (var j = 0, m = groups.length; j < m; j++) {
paulo@89	967 for (var group = groups[j], i = 0, n = group.length, node; i < n; i++) {
paulo@89	968 if (node = group[i]) callback(node, i, j);
paulo@89	969 }
paulo@89	970 }
paulo@89	971 return groups;
paulo@89	972 }
paulo@89	973 d3_selectionPrototype.call = function(callback) {
paulo@89	974 var args = d3_array(arguments);
paulo@89	975 callback.apply(args[0] = this, args);
paulo@89	976 return this;
paulo@89	977 };
paulo@89	978 d3_selectionPrototype.empty = function() {
paulo@89	979 return !this.node();
paulo@89	980 };
paulo@89	981 d3_selectionPrototype.node = function() {
paulo@89	982 for (var j = 0, m = this.length; j < m; j++) {
paulo@89	983 for (var group = this[j], i = 0, n = group.length; i < n; i++) {
paulo@89	984 var node = group[i];
paulo@89	985 if (node) return node;
paulo@89	986 }
paulo@89	987 }
paulo@89	988 return null;
paulo@89	989 };
paulo@89	990 d3_selectionPrototype.size = function() {
paulo@89	991 var n = 0;
paulo@89	992 d3_selection_each(this, function() {
paulo@89	993 ++n;
paulo@89	994 });
paulo@89	995 return n;
paulo@89	996 };
paulo@89	997 function d3_selection_enter(selection) {
paulo@89	998 d3_subclass(selection, d3_selection_enterPrototype);
paulo@89	999 return selection;
paulo@89	1000 }
paulo@89	1001 var d3_selection_enterPrototype = [];
paulo@89	1002 d3.selection.enter = d3_selection_enter;
paulo@89	1003 d3.selection.enter.prototype = d3_selection_enterPrototype;
paulo@89	1004 d3_selection_enterPrototype.append = d3_selectionPrototype.append;
paulo@89	1005 d3_selection_enterPrototype.empty = d3_selectionPrototype.empty;
paulo@89	1006 d3_selection_enterPrototype.node = d3_selectionPrototype.node;
paulo@89	1007 d3_selection_enterPrototype.call = d3_selectionPrototype.call;
paulo@89	1008 d3_selection_enterPrototype.size = d3_selectionPrototype.size;
paulo@89	1009 d3_selection_enterPrototype.select = function(selector) {
paulo@89	1010 var subgroups = [], subgroup, subnode, upgroup, group, node;
paulo@89	1011 for (var j = -1, m = this.length; ++j < m; ) {
paulo@89	1012 upgroup = (group = this[j]).update;
paulo@89	1013 subgroups.push(subgroup = []);
paulo@89	1014 subgroup.parentNode = group.parentNode;
paulo@89	1015 for (var i = -1, n = group.length; ++i < n; ) {
paulo@89	1016 if (node = group[i]) {
paulo@89	1017 subgroup.push(upgroup[i] = subnode = selector.call(group.parentNode, node.__data__, i, j));
paulo@89	1018 subnode.__data__ = node.__data__;
paulo@89	1019 } else {
paulo@89	1020 subgroup.push(null);
paulo@89	1021 }
paulo@89	1022 }
paulo@89	1023 }
paulo@89	1024 return d3_selection(subgroups);
paulo@89	1025 };
paulo@89	1026 d3_selection_enterPrototype.insert = function(name, before) {
paulo@89	1027 if (arguments.length < 2) before = d3_selection_enterInsertBefore(this);
paulo@89	1028 return d3_selectionPrototype.insert.call(this, name, before);
paulo@89	1029 };
paulo@89	1030 function d3_selection_enterInsertBefore(enter) {
paulo@89	1031 var i0, j0;
paulo@89	1032 return function(d, i, j) {
paulo@89	1033 var group = enter[j].update, n = group.length, node;
paulo@89	1034 if (j != j0) j0 = j, i0 = 0;
paulo@89	1035 if (i >= i0) i0 = i + 1;
paulo@89	1036 while (!(node = group[i0]) && ++i0 < n) ;
paulo@89	1037 return node;
paulo@89	1038 };
paulo@89	1039 }
paulo@89	1040 d3.select = function(node) {
paulo@89	1041 var group;
paulo@89	1042 if (typeof node === "string") {
paulo@89	1043 group = [ d3_select(node, d3_document) ];
paulo@89	1044 group.parentNode = d3_document.documentElement;
paulo@89	1045 } else {
paulo@89	1046 group = [ node ];
paulo@89	1047 group.parentNode = d3_documentElement(node);
paulo@89	1048 }
paulo@89	1049 return d3_selection([ group ]);
paulo@89	1050 };
paulo@89	1051 d3.selectAll = function(nodes) {
paulo@89	1052 var group;
paulo@89	1053 if (typeof nodes === "string") {
paulo@89	1054 group = d3_array(d3_selectAll(nodes, d3_document));
paulo@89	1055 group.parentNode = d3_document.documentElement;
paulo@89	1056 } else {
paulo@89	1057 group = d3_array(nodes);
paulo@89	1058 group.parentNode = null;
paulo@89	1059 }
paulo@89	1060 return d3_selection([ group ]);
paulo@89	1061 };
paulo@89	1062 d3_selectionPrototype.on = function(type, listener, capture) {
paulo@89	1063 var n = arguments.length;
paulo@89	1064 if (n < 3) {
paulo@89	1065 if (typeof type !== "string") {
paulo@89	1066 if (n < 2) listener = false;
paulo@89	1067 for (capture in type) this.each(d3_selection_on(capture, type[capture], listener));
paulo@89	1068 return this;
paulo@89	1069 }
paulo@89	1070 if (n < 2) return (n = this.node()["__on" + type]) && n._;
paulo@89	1071 capture = false;
paulo@89	1072 }
paulo@89	1073 return this.each(d3_selection_on(type, listener, capture));
paulo@89	1074 };
paulo@89	1075 function d3_selection_on(type, listener, capture) {
paulo@89	1076 var name = "__on" + type, i = type.indexOf("."), wrap = d3_selection_onListener;
paulo@89	1077 if (i > 0) type = type.slice(0, i);
paulo@89	1078 var filter = d3_selection_onFilters.get(type);
paulo@89	1079 if (filter) type = filter, wrap = d3_selection_onFilter;
paulo@89	1080 function onRemove() {
paulo@89	1081 var l = this[name];
paulo@89	1082 if (l) {
paulo@89	1083 this.removeEventListener(type, l, l.$);
paulo@89	1084 delete this[name];
paulo@89	1085 }
paulo@89	1086 }
paulo@89	1087 function onAdd() {
paulo@89	1088 var l = wrap(listener, d3_array(arguments));
paulo@89	1089 onRemove.call(this);
paulo@89	1090 this.addEventListener(type, this[name] = l, l.$ = capture);
paulo@89	1091 l._ = listener;
paulo@89	1092 }
paulo@89	1093 function removeAll() {
paulo@89	1094 var re = new RegExp("^__on([^.]+)" + d3.requote(type) + "$"), match;
paulo@89	1095 for (var name in this) {
paulo@89	1096 if (match = name.match(re)) {
paulo@89	1097 var l = this[name];
paulo@89	1098 this.removeEventListener(match[1], l, l.$);
paulo@89	1099 delete this[name];
paulo@89	1100 }
paulo@89	1101 }
paulo@89	1102 }
paulo@89	1103 return i ? listener ? onAdd : onRemove : listener ? d3_noop : removeAll;
paulo@89	1104 }
paulo@89	1105 var d3_selection_onFilters = d3.map({
paulo@89	1106 mouseenter: "mouseover",
paulo@89	1107 mouseleave: "mouseout"
paulo@89	1108 });
paulo@89	1109 if (d3_document) {
paulo@89	1110 d3_selection_onFilters.forEach(function(k) {
paulo@89	1111 if ("on" + k in d3_document) d3_selection_onFilters.remove(k);
paulo@89	1112 });
paulo@89	1113 }
paulo@89	1114 function d3_selection_onListener(listener, argumentz) {
paulo@89	1115 return function(e) {
paulo@89	1116 var o = d3.event;
paulo@89	1117 d3.event = e;
paulo@89	1118 argumentz[0] = this.__data__;
paulo@89	1119 try {
paulo@89	1120 listener.apply(this, argumentz);
paulo@89	1121 } finally {
paulo@89	1122 d3.event = o;
paulo@89	1123 }
paulo@89	1124 };
paulo@89	1125 }
paulo@89	1126 function d3_selection_onFilter(listener, argumentz) {
paulo@89	1127 var l = d3_selection_onListener(listener, argumentz);
paulo@89	1128 return function(e) {
paulo@89	1129 var target = this, related = e.relatedTarget;
paulo@89	1130 if (!related \|\| related !== target && !(related.compareDocumentPosition(target) & 8)) {
paulo@89	1131 l.call(target, e);
paulo@89	1132 }
paulo@89	1133 };
paulo@89	1134 }
paulo@89	1135 var d3_event_dragSelect, d3_event_dragId = 0;
paulo@89	1136 function d3_event_dragSuppress(node) {
paulo@89	1137 var name = ".dragsuppress-" + ++d3_event_dragId, click = "click" + name, w = d3.select(d3_window(node)).on("touchmove" + name, d3_eventPreventDefault).on("dragstart" + name, d3_eventPreventDefault).on("selectstart" + name, d3_eventPreventDefault);
paulo@89	1138 if (d3_event_dragSelect == null) {
paulo@89	1139 d3_event_dragSelect = "onselectstart" in node ? false : d3_vendorSymbol(node.style, "userSelect");
paulo@89	1140 }
paulo@89	1141 if (d3_event_dragSelect) {
paulo@89	1142 var style = d3_documentElement(node).style, select = style[d3_event_dragSelect];
paulo@89	1143 style[d3_event_dragSelect] = "none";
paulo@89	1144 }
paulo@89	1145 return function(suppressClick) {
paulo@89	1146 w.on(name, null);
paulo@89	1147 if (d3_event_dragSelect) style[d3_event_dragSelect] = select;
paulo@89	1148 if (suppressClick) {
paulo@89	1149 var off = function() {
paulo@89	1150 w.on(click, null);
paulo@89	1151 };
paulo@89	1152 w.on(click, function() {
paulo@89	1153 d3_eventPreventDefault();
paulo@89	1154 off();
paulo@89	1155 }, true);
paulo@89	1156 setTimeout(off, 0);
paulo@89	1157 }
paulo@89	1158 };
paulo@89	1159 }
paulo@89	1160 d3.mouse = function(container) {
paulo@89	1161 return d3_mousePoint(container, d3_eventSource());
paulo@89	1162 };
paulo@89	1163 var d3_mouse_bug44083 = this.navigator && /WebKit/.test(this.navigator.userAgent) ? -1 : 0;
paulo@89	1164 function d3_mousePoint(container, e) {
paulo@89	1165 if (e.changedTouches) e = e.changedTouches[0];
paulo@89	1166 var svg = container.ownerSVGElement \|\| container;
paulo@89	1167 if (svg.createSVGPoint) {
paulo@89	1168 var point = svg.createSVGPoint();
paulo@89	1169 if (d3_mouse_bug44083 < 0) {
paulo@89	1170 var window = d3_window(container);
paulo@89	1171 if (window.scrollX \|\| window.scrollY) {
paulo@89	1172 svg = d3.select("body").append("svg").style({
paulo@89	1173 position: "absolute",
paulo@89	1174 top: 0,
paulo@89	1175 left: 0,
paulo@89	1176 margin: 0,
paulo@89	1177 padding: 0,
paulo@89	1178 border: "none"
paulo@89	1179 }, "important");
paulo@89	1180 var ctm = svg[0][0].getScreenCTM();
paulo@89	1181 d3_mouse_bug44083 = !(ctm.f \|\| ctm.e);
paulo@89	1182 svg.remove();
paulo@89	1183 }
paulo@89	1184 }
paulo@89	1185 if (d3_mouse_bug44083) point.x = e.pageX, point.y = e.pageY; else point.x = e.clientX,
paulo@89	1186 point.y = e.clientY;
paulo@89	1187 point = point.matrixTransform(container.getScreenCTM().inverse());
paulo@89	1188 return [ point.x, point.y ];
paulo@89	1189 }
paulo@89	1190 var rect = container.getBoundingClientRect();
paulo@89	1191 return [ e.clientX - rect.left - container.clientLeft, e.clientY - rect.top - container.clientTop ];
paulo@89	1192 }
paulo@89	1193 d3.touch = function(container, touches, identifier) {
paulo@89	1194 if (arguments.length < 3) identifier = touches, touches = d3_eventSource().changedTouches;
paulo@89	1195 if (touches) for (var i = 0, n = touches.length, touch; i < n; ++i) {
paulo@89	1196 if ((touch = touches[i]).identifier === identifier) {
paulo@89	1197 return d3_mousePoint(container, touch);
paulo@89	1198 }
paulo@89	1199 }
paulo@89	1200 };
paulo@89	1201 d3.behavior.drag = function() {
paulo@89	1202 var event = d3_eventDispatch(drag, "drag", "dragstart", "dragend"), origin = null, mousedown = dragstart(d3_noop, d3.mouse, d3_window, "mousemove", "mouseup"), touchstart = dragstart(d3_behavior_dragTouchId, d3.touch, d3_identity, "touchmove", "touchend");
paulo@89	1203 function drag() {
paulo@89	1204 this.on("mousedown.drag", mousedown).on("touchstart.drag", touchstart);
paulo@89	1205 }
paulo@89	1206 function dragstart(id, position, subject, move, end) {
paulo@89	1207 return function() {
paulo@89	1208 var that = this, target = d3.event.target.correspondingElement \|\| d3.event.target, parent = that.parentNode, dispatch = event.of(that, arguments), dragged = 0, dragId = id(), dragName = ".drag" + (dragId == null ? "" : "-" + dragId), dragOffset, dragSubject = d3.select(subject(target)).on(move + dragName, moved).on(end + dragName, ended), dragRestore = d3_event_dragSuppress(target), position0 = position(parent, dragId);
paulo@89	1209 if (origin) {
paulo@89	1210 dragOffset = origin.apply(that, arguments);
paulo@89	1211 dragOffset = [ dragOffset.x - position0[0], dragOffset.y - position0[1] ];
paulo@89	1212 } else {
paulo@89	1213 dragOffset = [ 0, 0 ];
paulo@89	1214 }
paulo@89	1215 dispatch({
paulo@89	1216 type: "dragstart"
paulo@89	1217 });
paulo@89	1218 function moved() {
paulo@89	1219 var position1 = position(parent, dragId), dx, dy;
paulo@89	1220 if (!position1) return;
paulo@89	1221 dx = position1[0] - position0[0];
paulo@89	1222 dy = position1[1] - position0[1];
paulo@89	1223 dragged \|= dx \| dy;
paulo@89	1224 position0 = position1;
paulo@89	1225 dispatch({
paulo@89	1226 type: "drag",
paulo@89	1227 x: position1[0] + dragOffset[0],
paulo@89	1228 y: position1[1] + dragOffset[1],
paulo@89	1229 dx: dx,
paulo@89	1230 dy: dy
paulo@89	1231 });
paulo@89	1232 }
paulo@89	1233 function ended() {
paulo@89	1234 if (!position(parent, dragId)) return;
paulo@89	1235 dragSubject.on(move + dragName, null).on(end + dragName, null);
paulo@89	1236 dragRestore(dragged);
paulo@89	1237 dispatch({
paulo@89	1238 type: "dragend"
paulo@89	1239 });
paulo@89	1240 }
paulo@89	1241 };
paulo@89	1242 }
paulo@89	1243 drag.origin = function(x) {
paulo@89	1244 if (!arguments.length) return origin;
paulo@89	1245 origin = x;
paulo@89	1246 return drag;
paulo@89	1247 };
paulo@89	1248 return d3.rebind(drag, event, "on");
paulo@89	1249 };
paulo@89	1250 function d3_behavior_dragTouchId() {
paulo@89	1251 return d3.event.changedTouches[0].identifier;
paulo@89	1252 }
paulo@89	1253 d3.touches = function(container, touches) {
paulo@89	1254 if (arguments.length < 2) touches = d3_eventSource().touches;
paulo@89	1255 return touches ? d3_array(touches).map(function(touch) {
paulo@89	1256 var point = d3_mousePoint(container, touch);
paulo@89	1257 point.identifier = touch.identifier;
paulo@89	1258 return point;
paulo@89	1259 }) : [];
paulo@89	1260 };
paulo@89	1261 var ε = 1e-6, ε2 = ε * ε, π = Math.PI, τ = 2 * π, τε = τ - ε, halfπ = π / 2, d3_radians = π / 180, d3_degrees = 180 / π;
paulo@89	1262 function d3_sgn(x) {
paulo@89	1263 return x > 0 ? 1 : x < 0 ? -1 : 0;
paulo@89	1264 }
paulo@89	1265 function d3_cross2d(a, b, c) {
paulo@89	1266 return (b[0] - a[0]) * (c[1] - a[1]) - (b[1] - a[1]) * (c[0] - a[0]);
paulo@89	1267 }
paulo@89	1268 function d3_acos(x) {
paulo@89	1269 return x > 1 ? 0 : x < -1 ? π : Math.acos(x);
paulo@89	1270 }
paulo@89	1271 function d3_asin(x) {
paulo@89	1272 return x > 1 ? halfπ : x < -1 ? -halfπ : Math.asin(x);
paulo@89	1273 }
paulo@89	1274 function d3_sinh(x) {
paulo@89	1275 return ((x = Math.exp(x)) - 1 / x) / 2;
paulo@89	1276 }
paulo@89	1277 function d3_cosh(x) {
paulo@89	1278 return ((x = Math.exp(x)) + 1 / x) / 2;
paulo@89	1279 }
paulo@89	1280 function d3_tanh(x) {
paulo@89	1281 return ((x = Math.exp(2 * x)) - 1) / (x + 1);
paulo@89	1282 }
paulo@89	1283 function d3_haversin(x) {
paulo@89	1284 return (x = Math.sin(x / 2)) * x;
paulo@89	1285 }
paulo@89	1286 var ρ = Math.SQRT2, ρ2 = 2, ρ4 = 4;
paulo@89	1287 d3.interpolateZoom = function(p0, p1) {
paulo@89	1288 var ux0 = p0[0], uy0 = p0[1], w0 = p0[2], ux1 = p1[0], uy1 = p1[1], w1 = p1[2], dx = ux1 - ux0, dy = uy1 - uy0, d2 = dx * dx + dy * dy, i, S;
paulo@89	1289 if (d2 < ε2) {
paulo@89	1290 S = Math.log(w1 / w0) / ρ;
paulo@89	1291 i = function(t) {
paulo@89	1292 return [ ux0 + t * dx, uy0 + t * dy, w0 * Math.exp(ρ * t * S) ];
paulo@89	1293 };
paulo@89	1294 } else {
paulo@89	1295 var d1 = Math.sqrt(d2), b0 = (w1 * w1 - w0 * w0 + ρ4 * d2) / (2 * w0 * ρ2 * d1), b1 = (w1 * w1 - w0 * w0 - ρ4 * d2) / (2 * w1 * ρ2 * d1), r0 = Math.log(Math.sqrt(b0 * b0 + 1) - b0), r1 = Math.log(Math.sqrt(b1 * b1 + 1) - b1);
paulo@89	1296 S = (r1 - r0) / ρ;
paulo@89	1297 i = function(t) {
paulo@89	1298 var s = t * S, coshr0 = d3_cosh(r0), u = w0 / (ρ2 * d1) * (coshr0 * d3_tanh(ρ * s + r0) - d3_sinh(r0));
paulo@89	1299 return [ ux0 + u * dx, uy0 + u * dy, w0 * coshr0 / d3_cosh(ρ * s + r0) ];
paulo@89	1300 };
paulo@89	1301 }
paulo@89	1302 i.duration = S * 1e3;
paulo@89	1303 return i;
paulo@89	1304 };
paulo@89	1305 d3.behavior.zoom = function() {
paulo@89	1306 var view = {
paulo@89	1307 x: 0,
paulo@89	1308 y: 0,
paulo@89	1309 k: 1
paulo@89	1310 }, translate0, center0, center, size = [ 960, 500 ], scaleExtent = d3_behavior_zoomInfinity, duration = 250, zooming = 0, mousedown = "mousedown.zoom", mousemove = "mousemove.zoom", mouseup = "mouseup.zoom", mousewheelTimer, touchstart = "touchstart.zoom", touchtime, event = d3_eventDispatch(zoom, "zoomstart", "zoom", "zoomend"), x0, x1, y0, y1;
paulo@89	1311 if (!d3_behavior_zoomWheel) {
paulo@89	1312 d3_behavior_zoomWheel = "onwheel" in d3_document ? (d3_behavior_zoomDelta = function() {
paulo@89	1313 return -d3.event.deltaY * (d3.event.deltaMode ? 120 : 1);
paulo@89	1314 }, "wheel") : "onmousewheel" in d3_document ? (d3_behavior_zoomDelta = function() {
paulo@89	1315 return d3.event.wheelDelta;
paulo@89	1316 }, "mousewheel") : (d3_behavior_zoomDelta = function() {
paulo@89	1317 return -d3.event.detail;
paulo@89	1318 }, "MozMousePixelScroll");
paulo@89	1319 }
paulo@89	1320 function zoom(g) {
paulo@89	1321 g.on(mousedown, mousedowned).on(d3_behavior_zoomWheel + ".zoom", mousewheeled).on("dblclick.zoom", dblclicked).on(touchstart, touchstarted);
paulo@89	1322 }
paulo@89	1323 zoom.event = function(g) {
paulo@89	1324 g.each(function() {
paulo@89	1325 var dispatch = event.of(this, arguments), view1 = view;
paulo@89	1326 if (d3_transitionInheritId) {
paulo@89	1327 d3.select(this).transition().each("start.zoom", function() {
paulo@89	1328 view = this.__chart__ \|\| {
paulo@89	1329 x: 0,
paulo@89	1330 y: 0,
paulo@89	1331 k: 1
paulo@89	1332 };
paulo@89	1333 zoomstarted(dispatch);
paulo@89	1334 }).tween("zoom:zoom", function() {
paulo@89	1335 var dx = size[0], dy = size[1], cx = center0 ? center0[0] : dx / 2, cy = center0 ? center0[1] : dy / 2, i = d3.interpolateZoom([ (cx - view.x) / view.k, (cy - view.y) / view.k, dx / view.k ], [ (cx - view1.x) / view1.k, (cy - view1.y) / view1.k, dx / view1.k ]);
paulo@89	1336 return function(t) {
paulo@89	1337 var l = i(t), k = dx / l[2];
paulo@89	1338 this.__chart__ = view = {
paulo@89	1339 x: cx - l[0] * k,
paulo@89	1340 y: cy - l[1] * k,
paulo@89	1341 k: k
paulo@89	1342 };
paulo@89	1343 zoomed(dispatch);
paulo@89	1344 };
paulo@89	1345 }).each("interrupt.zoom", function() {
paulo@89	1346 zoomended(dispatch);
paulo@89	1347 }).each("end.zoom", function() {
paulo@89	1348 zoomended(dispatch);
paulo@89	1349 });
paulo@89	1350 } else {
paulo@89	1351 this.__chart__ = view;
paulo@89	1352 zoomstarted(dispatch);
paulo@89	1353 zoomed(dispatch);
paulo@89	1354 zoomended(dispatch);
paulo@89	1355 }
paulo@89	1356 });
paulo@89	1357 };
paulo@89	1358 zoom.translate = function(_) {
paulo@89	1359 if (!arguments.length) return [ view.x, view.y ];
paulo@89	1360 view = {
paulo@89	1361 x: +_[0],
paulo@89	1362 y: +_[1],
paulo@89	1363 k: view.k
paulo@89	1364 };
paulo@89	1365 rescale();
paulo@89	1366 return zoom;
paulo@89	1367 };
paulo@89	1368 zoom.scale = function(_) {
paulo@89	1369 if (!arguments.length) return view.k;
paulo@89	1370 view = {
paulo@89	1371 x: view.x,
paulo@89	1372 y: view.y,
paulo@89	1373 k: null
paulo@89	1374 };
paulo@89	1375 scaleTo(+_);
paulo@89	1376 rescale();
paulo@89	1377 return zoom;
paulo@89	1378 };
paulo@89	1379 zoom.scaleExtent = function(_) {
paulo@89	1380 if (!arguments.length) return scaleExtent;
paulo@89	1381 scaleExtent = _ == null ? d3_behavior_zoomInfinity : [ +_[0], +_[1] ];
paulo@89	1382 return zoom;
paulo@89	1383 };
paulo@89	1384 zoom.center = function(_) {
paulo@89	1385 if (!arguments.length) return center;
paulo@89	1386 center = _ && [ +_[0], +_[1] ];
paulo@89	1387 return zoom;
paulo@89	1388 };
paulo@89	1389 zoom.size = function(_) {
paulo@89	1390 if (!arguments.length) return size;
paulo@89	1391 size = _ && [ +_[0], +_[1] ];
paulo@89	1392 return zoom;
paulo@89	1393 };
paulo@89	1394 zoom.duration = function(_) {
paulo@89	1395 if (!arguments.length) return duration;
paulo@89	1396 duration = +_;
paulo@89	1397 return zoom;
paulo@89	1398 };
paulo@89	1399 zoom.x = function(z) {
paulo@89	1400 if (!arguments.length) return x1;
paulo@89	1401 x1 = z;
paulo@89	1402 x0 = z.copy();
paulo@89	1403 view = {
paulo@89	1404 x: 0,
paulo@89	1405 y: 0,
paulo@89	1406 k: 1
paulo@89	1407 };
paulo@89	1408 return zoom;
paulo@89	1409 };
paulo@89	1410 zoom.y = function(z) {
paulo@89	1411 if (!arguments.length) return y1;
paulo@89	1412 y1 = z;
paulo@89	1413 y0 = z.copy();
paulo@89	1414 view = {
paulo@89	1415 x: 0,
paulo@89	1416 y: 0,
paulo@89	1417 k: 1
paulo@89	1418 };
paulo@89	1419 return zoom;
paulo@89	1420 };
paulo@89	1421 function location(p) {
paulo@89	1422 return [ (p[0] - view.x) / view.k, (p[1] - view.y) / view.k ];
paulo@89	1423 }
paulo@89	1424 function point(l) {
paulo@89	1425 return [ l[0] * view.k + view.x, l[1] * view.k + view.y ];
paulo@89	1426 }
paulo@89	1427 function scaleTo(s) {
paulo@89	1428 view.k = Math.max(scaleExtent[0], Math.min(scaleExtent[1], s));
paulo@89	1429 }
paulo@89	1430 function translateTo(p, l) {
paulo@89	1431 l = point(l);
paulo@89	1432 view.x += p[0] - l[0];
paulo@89	1433 view.y += p[1] - l[1];
paulo@89	1434 }
paulo@89	1435 function zoomTo(that, p, l, k) {
paulo@89	1436 that.__chart__ = {
paulo@89	1437 x: view.x,
paulo@89	1438 y: view.y,
paulo@89	1439 k: view.k
paulo@89	1440 };
paulo@89	1441 scaleTo(Math.pow(2, k));
paulo@89	1442 translateTo(center0 = p, l);
paulo@89	1443 that = d3.select(that);
paulo@89	1444 if (duration > 0) that = that.transition().duration(duration);
paulo@89	1445 that.call(zoom.event);
paulo@89	1446 }
paulo@89	1447 function rescale() {
paulo@89	1448 if (x1) x1.domain(x0.range().map(function(x) {
paulo@89	1449 return (x - view.x) / view.k;
paulo@89	1450 }).map(x0.invert));
paulo@89	1451 if (y1) y1.domain(y0.range().map(function(y) {
paulo@89	1452 return (y - view.y) / view.k;
paulo@89	1453 }).map(y0.invert));
paulo@89	1454 }
paulo@89	1455 function zoomstarted(dispatch) {
paulo@89	1456 if (!zooming++) dispatch({
paulo@89	1457 type: "zoomstart"
paulo@89	1458 });
paulo@89	1459 }
paulo@89	1460 function zoomed(dispatch) {
paulo@89	1461 rescale();
paulo@89	1462 dispatch({
paulo@89	1463 type: "zoom",
paulo@89	1464 scale: view.k,
paulo@89	1465 translate: [ view.x, view.y ]
paulo@89	1466 });
paulo@89	1467 }
paulo@89	1468 function zoomended(dispatch) {
paulo@89	1469 if (!--zooming) dispatch({
paulo@89	1470 type: "zoomend"
paulo@89	1471 }), center0 = null;
paulo@89	1472 }
paulo@89	1473 function mousedowned() {
paulo@89	1474 var that = this, dispatch = event.of(that, arguments), dragged = 0, subject = d3.select(d3_window(that)).on(mousemove, moved).on(mouseup, ended), location0 = location(d3.mouse(that)), dragRestore = d3_event_dragSuppress(that);
paulo@89	1475 d3_selection_interrupt.call(that);
paulo@89	1476 zoomstarted(dispatch);
paulo@89	1477 function moved() {
paulo@89	1478 dragged = 1;
paulo@89	1479 translateTo(d3.mouse(that), location0);
paulo@89	1480 zoomed(dispatch);
paulo@89	1481 }
paulo@89	1482 function ended() {
paulo@89	1483 subject.on(mousemove, null).on(mouseup, null);
paulo@89	1484 dragRestore(dragged);
paulo@89	1485 zoomended(dispatch);
paulo@89	1486 }
paulo@89	1487 }
paulo@89	1488 function touchstarted() {
paulo@89	1489 var that = this, dispatch = event.of(that, arguments), locations0 = {}, distance0 = 0, scale0, zoomName = ".zoom-" + d3.event.changedTouches[0].identifier, touchmove = "touchmove" + zoomName, touchend = "touchend" + zoomName, targets = [], subject = d3.select(that), dragRestore = d3_event_dragSuppress(that);
paulo@89	1490 started();
paulo@89	1491 zoomstarted(dispatch);
paulo@89	1492 subject.on(mousedown, null).on(touchstart, started);
paulo@89	1493 function relocate() {
paulo@89	1494 var touches = d3.touches(that);
paulo@89	1495 scale0 = view.k;
paulo@89	1496 touches.forEach(function(t) {
paulo@89	1497 if (t.identifier in locations0) locations0[t.identifier] = location(t);
paulo@89	1498 });
paulo@89	1499 return touches;
paulo@89	1500 }
paulo@89	1501 function started() {
paulo@89	1502 var target = d3.event.target;
paulo@89	1503 d3.select(target).on(touchmove, moved).on(touchend, ended);
paulo@89	1504 targets.push(target);
paulo@89	1505 var changed = d3.event.changedTouches;
paulo@89	1506 for (var i = 0, n = changed.length; i < n; ++i) {
paulo@89	1507 locations0[changed[i].identifier] = null;
paulo@89	1508 }
paulo@89	1509 var touches = relocate(), now = Date.now();
paulo@89	1510 if (touches.length === 1) {
paulo@89	1511 if (now - touchtime < 500) {
paulo@89	1512 var p = touches[0];
paulo@89	1513 zoomTo(that, p, locations0[p.identifier], Math.floor(Math.log(view.k) / Math.LN2) + 1);
paulo@89	1514 d3_eventPreventDefault();
paulo@89	1515 }
paulo@89	1516 touchtime = now;
paulo@89	1517 } else if (touches.length > 1) {
paulo@89	1518 var p = touches[0], q = touches[1], dx = p[0] - q[0], dy = p[1] - q[1];
paulo@89	1519 distance0 = dx * dx + dy * dy;
paulo@89	1520 }
paulo@89	1521 }
paulo@89	1522 function moved() {
paulo@89	1523 var touches = d3.touches(that), p0, l0, p1, l1;
paulo@89	1524 d3_selection_interrupt.call(that);
paulo@89	1525 for (var i = 0, n = touches.length; i < n; ++i, l1 = null) {
paulo@89	1526 p1 = touches[i];
paulo@89	1527 if (l1 = locations0[p1.identifier]) {
paulo@89	1528 if (l0) break;
paulo@89	1529 p0 = p1, l0 = l1;
paulo@89	1530 }
paulo@89	1531 }
paulo@89	1532 if (l1) {
paulo@89	1533 var distance1 = (distance1 = p1[0] - p0[0]) * distance1 + (distance1 = p1[1] - p0[1]) * distance1, scale1 = distance0 && Math.sqrt(distance1 / distance0);
paulo@89	1534 p0 = [ (p0[0] + p1[0]) / 2, (p0[1] + p1[1]) / 2 ];
paulo@89	1535 l0 = [ (l0[0] + l1[0]) / 2, (l0[1] + l1[1]) / 2 ];
paulo@89	1536 scaleTo(scale1 * scale0);
paulo@89	1537 }
paulo@89	1538 touchtime = null;
paulo@89	1539 translateTo(p0, l0);
paulo@89	1540 zoomed(dispatch);
paulo@89	1541 }
paulo@89	1542 function ended() {
paulo@89	1543 if (d3.event.touches.length) {
paulo@89	1544 var changed = d3.event.changedTouches;
paulo@89	1545 for (var i = 0, n = changed.length; i < n; ++i) {
paulo@89	1546 delete locations0[changed[i].identifier];
paulo@89	1547 }
paulo@89	1548 for (var identifier in locations0) {
paulo@89	1549 return void relocate();
paulo@89	1550 }
paulo@89	1551 }
paulo@89	1552 d3.selectAll(targets).on(zoomName, null);
paulo@89	1553 subject.on(mousedown, mousedowned).on(touchstart, touchstarted);
paulo@89	1554 dragRestore();
paulo@89	1555 zoomended(dispatch);
paulo@89	1556 }
paulo@89	1557 }
paulo@89	1558 function mousewheeled() {
paulo@89	1559 var dispatch = event.of(this, arguments);
paulo@89	1560 if (mousewheelTimer) clearTimeout(mousewheelTimer); else d3_selection_interrupt.call(this),
paulo@89	1561 translate0 = location(center0 = center \|\| d3.mouse(this)), zoomstarted(dispatch);
paulo@89	1562 mousewheelTimer = setTimeout(function() {
paulo@89	1563 mousewheelTimer = null;
paulo@89	1564 zoomended(dispatch);
paulo@89	1565 }, 50);
paulo@89	1566 d3_eventPreventDefault();
paulo@89	1567 scaleTo(Math.pow(2, d3_behavior_zoomDelta() * .002) * view.k);
paulo@89	1568 translateTo(center0, translate0);
paulo@89	1569 zoomed(dispatch);
paulo@89	1570 }
paulo@89	1571 function dblclicked() {
paulo@89	1572 var p = d3.mouse(this), k = Math.log(view.k) / Math.LN2;
paulo@89	1573 zoomTo(this, p, location(p), d3.event.shiftKey ? Math.ceil(k) - 1 : Math.floor(k) + 1);
paulo@89	1574 }
paulo@89	1575 return d3.rebind(zoom, event, "on");
paulo@89	1576 };
paulo@89	1577 var d3_behavior_zoomInfinity = [ 0, Infinity ], d3_behavior_zoomDelta, d3_behavior_zoomWheel;
paulo@89	1578 d3.color = d3_color;
paulo@89	1579 function d3_color() {}
paulo@89	1580 d3_color.prototype.toString = function() {
paulo@89	1581 return this.rgb() + "";
paulo@89	1582 };
paulo@89	1583 d3.hsl = d3_hsl;
paulo@89	1584 function d3_hsl(h, s, l) {
paulo@89	1585 return this instanceof d3_hsl ? void (this.h = +h, this.s = +s, this.l = +l) : arguments.length < 2 ? h instanceof d3_hsl ? new d3_hsl(h.h, h.s, h.l) : d3_rgb_parse("" + h, d3_rgb_hsl, d3_hsl) : new d3_hsl(h, s, l);
paulo@89	1586 }
paulo@89	1587 var d3_hslPrototype = d3_hsl.prototype = new d3_color();
paulo@89	1588 d3_hslPrototype.brighter = function(k) {
paulo@89	1589 k = Math.pow(.7, arguments.length ? k : 1);
paulo@89	1590 return new d3_hsl(this.h, this.s, this.l / k);
paulo@89	1591 };
paulo@89	1592 d3_hslPrototype.darker = function(k) {
paulo@89	1593 k = Math.pow(.7, arguments.length ? k : 1);
paulo@89	1594 return new d3_hsl(this.h, this.s, k * this.l);
paulo@89	1595 };
paulo@89	1596 d3_hslPrototype.rgb = function() {
paulo@89	1597 return d3_hsl_rgb(this.h, this.s, this.l);
paulo@89	1598 };
paulo@89	1599 function d3_hsl_rgb(h, s, l) {
paulo@89	1600 var m1, m2;
paulo@89	1601 h = isNaN(h) ? 0 : (h %= 360) < 0 ? h + 360 : h;
paulo@89	1602 s = isNaN(s) ? 0 : s < 0 ? 0 : s > 1 ? 1 : s;
paulo@89	1603 l = l < 0 ? 0 : l > 1 ? 1 : l;
paulo@89	1604 m2 = l <= .5 ? l * (1 + s) : l + s - l * s;
paulo@89	1605 m1 = 2 * l - m2;
paulo@89	1606 function v(h) {
paulo@89	1607 if (h > 360) h -= 360; else if (h < 0) h += 360;
paulo@89	1608 if (h < 60) return m1 + (m2 - m1) * h / 60;
paulo@89	1609 if (h < 180) return m2;
paulo@89	1610 if (h < 240) return m1 + (m2 - m1) * (240 - h) / 60;
paulo@89	1611 return m1;
paulo@89	1612 }
paulo@89	1613 function vv(h) {
paulo@89	1614 return Math.round(v(h) * 255);
paulo@89	1615 }
paulo@89	1616 return new d3_rgb(vv(h + 120), vv(h), vv(h - 120));
paulo@89	1617 }
paulo@89	1618 d3.hcl = d3_hcl;
paulo@89	1619 function d3_hcl(h, c, l) {
paulo@89	1620 return this instanceof d3_hcl ? void (this.h = +h, this.c = +c, this.l = +l) : arguments.length < 2 ? h instanceof d3_hcl ? new d3_hcl(h.h, h.c, h.l) : h instanceof d3_lab ? d3_lab_hcl(h.l, h.a, h.b) : d3_lab_hcl((h = d3_rgb_lab((h = d3.rgb(h)).r, h.g, h.b)).l, h.a, h.b) : new d3_hcl(h, c, l);
paulo@89	1621 }
paulo@89	1622 var d3_hclPrototype = d3_hcl.prototype = new d3_color();
paulo@89	1623 d3_hclPrototype.brighter = function(k) {
paulo@89	1624 return new d3_hcl(this.h, this.c, Math.min(100, this.l + d3_lab_K * (arguments.length ? k : 1)));
paulo@89	1625 };
paulo@89	1626 d3_hclPrototype.darker = function(k) {
paulo@89	1627 return new d3_hcl(this.h, this.c, Math.max(0, this.l - d3_lab_K * (arguments.length ? k : 1)));
paulo@89	1628 };
paulo@89	1629 d3_hclPrototype.rgb = function() {
paulo@89	1630 return d3_hcl_lab(this.h, this.c, this.l).rgb();
paulo@89	1631 };
paulo@89	1632 function d3_hcl_lab(h, c, l) {
paulo@89	1633 if (isNaN(h)) h = 0;
paulo@89	1634 if (isNaN(c)) c = 0;
paulo@89	1635 return new d3_lab(l, Math.cos(h = d3_radians) c, Math.sin(h) * c);
paulo@89	1636 }
paulo@89	1637 d3.lab = d3_lab;
paulo@89	1638 function d3_lab(l, a, b) {
paulo@89	1639 return this instanceof d3_lab ? void (this.l = +l, this.a = +a, this.b = +b) : arguments.length < 2 ? l instanceof d3_lab ? new d3_lab(l.l, l.a, l.b) : l instanceof d3_hcl ? d3_hcl_lab(l.h, l.c, l.l) : d3_rgb_lab((l = d3_rgb(l)).r, l.g, l.b) : new d3_lab(l, a, b);
paulo@89	1640 }
paulo@89	1641 var d3_lab_K = 18;
paulo@89	1642 var d3_lab_X = .95047, d3_lab_Y = 1, d3_lab_Z = 1.08883;
paulo@89	1643 var d3_labPrototype = d3_lab.prototype = new d3_color();
paulo@89	1644 d3_labPrototype.brighter = function(k) {
paulo@89	1645 return new d3_lab(Math.min(100, this.l + d3_lab_K * (arguments.length ? k : 1)), this.a, this.b);
paulo@89	1646 };
paulo@89	1647 d3_labPrototype.darker = function(k) {
paulo@89	1648 return new d3_lab(Math.max(0, this.l - d3_lab_K * (arguments.length ? k : 1)), this.a, this.b);
paulo@89	1649 };
paulo@89	1650 d3_labPrototype.rgb = function() {
paulo@89	1651 return d3_lab_rgb(this.l, this.a, this.b);
paulo@89	1652 };
paulo@89	1653 function d3_lab_rgb(l, a, b) {
paulo@89	1654 var y = (l + 16) / 116, x = y + a / 500, z = y - b / 200;
paulo@89	1655 x = d3_lab_xyz(x) * d3_lab_X;
paulo@89	1656 y = d3_lab_xyz(y) * d3_lab_Y;
paulo@89	1657 z = d3_lab_xyz(z) * d3_lab_Z;
paulo@89	1658 return new d3_rgb(d3_xyz_rgb(3.2404542 * x - 1.5371385 * y - .4985314 * z), d3_xyz_rgb(-.969266 * x + 1.8760108 * y + .041556 * z), d3_xyz_rgb(.0556434 * x - .2040259 * y + 1.0572252 * z));
paulo@89	1659 }
paulo@89	1660 function d3_lab_hcl(l, a, b) {
paulo@89	1661 return l > 0 ? new d3_hcl(Math.atan2(b, a) * d3_degrees, Math.sqrt(a * a + b * b), l) : new d3_hcl(NaN, NaN, l);
paulo@89	1662 }
paulo@89	1663 function d3_lab_xyz(x) {
paulo@89	1664 return x > .206893034 ? x * x * x : (x - 4 / 29) / 7.787037;
paulo@89	1665 }
paulo@89	1666 function d3_xyz_lab(x) {
paulo@89	1667 return x > .008856 ? Math.pow(x, 1 / 3) : 7.787037 * x + 4 / 29;
paulo@89	1668 }
paulo@89	1669 function d3_xyz_rgb(r) {
paulo@89	1670 return Math.round(255 * (r <= .00304 ? 12.92 * r : 1.055 * Math.pow(r, 1 / 2.4) - .055));
paulo@89	1671 }
paulo@89	1672 d3.rgb = d3_rgb;
paulo@89	1673 function d3_rgb(r, g, b) {
paulo@89	1674 return this instanceof d3_rgb ? void (this.r = ~~r, this.g = ~~g, this.b = ~~b) : arguments.length < 2 ? r instanceof d3_rgb ? new d3_rgb(r.r, r.g, r.b) : d3_rgb_parse("" + r, d3_rgb, d3_hsl_rgb) : new d3_rgb(r, g, b);
paulo@89	1675 }
paulo@89	1676 function d3_rgbNumber(value) {
paulo@89	1677 return new d3_rgb(value >> 16, value >> 8 & 255, value & 255);
paulo@89	1678 }
paulo@89	1679 function d3_rgbString(value) {
paulo@89	1680 return d3_rgbNumber(value) + "";
paulo@89	1681 }
paulo@89	1682 var d3_rgbPrototype = d3_rgb.prototype = new d3_color();
paulo@89	1683 d3_rgbPrototype.brighter = function(k) {
paulo@89	1684 k = Math.pow(.7, arguments.length ? k : 1);
paulo@89	1685 var r = this.r, g = this.g, b = this.b, i = 30;
paulo@89	1686 if (!r && !g && !b) return new d3_rgb(i, i, i);
paulo@89	1687 if (r && r < i) r = i;
paulo@89	1688 if (g && g < i) g = i;
paulo@89	1689 if (b && b < i) b = i;
paulo@89	1690 return new d3_rgb(Math.min(255, r / k), Math.min(255, g / k), Math.min(255, b / k));
paulo@89	1691 };
paulo@89	1692 d3_rgbPrototype.darker = function(k) {
paulo@89	1693 k = Math.pow(.7, arguments.length ? k : 1);
paulo@89	1694 return new d3_rgb(k * this.r, k * this.g, k * this.b);
paulo@89	1695 };
paulo@89	1696 d3_rgbPrototype.hsl = function() {
paulo@89	1697 return d3_rgb_hsl(this.r, this.g, this.b);
paulo@89	1698 };
paulo@89	1699 d3_rgbPrototype.toString = function() {
paulo@89	1700 return "#" + d3_rgb_hex(this.r) + d3_rgb_hex(this.g) + d3_rgb_hex(this.b);
paulo@89	1701 };
paulo@89	1702 function d3_rgb_hex(v) {
paulo@89	1703 return v < 16 ? "0" + Math.max(0, v).toString(16) : Math.min(255, v).toString(16);
paulo@89	1704 }
paulo@89	1705 function d3_rgb_parse(format, rgb, hsl) {
paulo@89	1706 var r = 0, g = 0, b = 0, m1, m2, color;
paulo@89	1707 m1 = /([a-z]+)\((.*)\)/.exec(format = format.toLowerCase());
paulo@89	1708 if (m1) {
paulo@89	1709 m2 = m1[2].split(",");
paulo@89	1710 switch (m1[1]) {
paulo@89	1711 case "hsl":
paulo@89	1712 {
paulo@89	1713 return hsl(parseFloat(m2[0]), parseFloat(m2[1]) / 100, parseFloat(m2[2]) / 100);
paulo@89	1714 }
paulo@89	1715
paulo@89	1716 case "rgb":
paulo@89	1717 {
paulo@89	1718 return rgb(d3_rgb_parseNumber(m2[0]), d3_rgb_parseNumber(m2[1]), d3_rgb_parseNumber(m2[2]));
paulo@89	1719 }
paulo@89	1720 }
paulo@89	1721 }
paulo@89	1722 if (color = d3_rgb_names.get(format)) {
paulo@89	1723 return rgb(color.r, color.g, color.b);
paulo@89	1724 }
paulo@89	1725 if (format != null && format.charAt(0) === "#" && !isNaN(color = parseInt(format.slice(1), 16))) {
paulo@89	1726 if (format.length === 4) {
paulo@89	1727 r = (color & 3840) >> 4;
paulo@89	1728 r = r >> 4 \| r;
paulo@89	1729 g = color & 240;
paulo@89	1730 g = g >> 4 \| g;
paulo@89	1731 b = color & 15;
paulo@89	1732 b = b << 4 \| b;
paulo@89	1733 } else if (format.length === 7) {
paulo@89	1734 r = (color & 16711680) >> 16;
paulo@89	1735 g = (color & 65280) >> 8;
paulo@89	1736 b = color & 255;
paulo@89	1737 }
paulo@89	1738 }
paulo@89	1739 return rgb(r, g, b);
paulo@89	1740 }
paulo@89	1741 function d3_rgb_hsl(r, g, b) {
paulo@89	1742 var min = Math.min(r /= 255, g /= 255, b /= 255), max = Math.max(r, g, b), d = max - min, h, s, l = (max + min) / 2;
paulo@89	1743 if (d) {
paulo@89	1744 s = l < .5 ? d / (max + min) : d / (2 - max - min);
paulo@89	1745 if (r == max) h = (g - b) / d + (g < b ? 6 : 0); else if (g == max) h = (b - r) / d + 2; else h = (r - g) / d + 4;
paulo@89	1746 h *= 60;
paulo@89	1747 } else {
paulo@89	1748 h = NaN;
paulo@89	1749 s = l > 0 && l < 1 ? 0 : h;
paulo@89	1750 }
paulo@89	1751 return new d3_hsl(h, s, l);
paulo@89	1752 }
paulo@89	1753 function d3_rgb_lab(r, g, b) {
paulo@89	1754 r = d3_rgb_xyz(r);
paulo@89	1755 g = d3_rgb_xyz(g);
paulo@89	1756 b = d3_rgb_xyz(b);
paulo@89	1757 var x = d3_xyz_lab((.4124564 * r + .3575761 * g + .1804375 * b) / d3_lab_X), y = d3_xyz_lab((.2126729 * r + .7151522 * g + .072175 * b) / d3_lab_Y), z = d3_xyz_lab((.0193339 * r + .119192 * g + .9503041 * b) / d3_lab_Z);
paulo@89	1758 return d3_lab(116 * y - 16, 500 * (x - y), 200 * (y - z));
paulo@89	1759 }
paulo@89	1760 function d3_rgb_xyz(r) {
paulo@89	1761 return (r /= 255) <= .04045 ? r / 12.92 : Math.pow((r + .055) / 1.055, 2.4);
paulo@89	1762 }
paulo@89	1763 function d3_rgb_parseNumber(c) {
paulo@89	1764 var f = parseFloat(c);
paulo@89	1765 return c.charAt(c.length - 1) === "%" ? Math.round(f * 2.55) : f;
paulo@89	1766 }
paulo@89	1767 var d3_rgb_names = d3.map({
paulo@89	1768 aliceblue: 15792383,
paulo@89	1769 antiquewhite: 16444375,
paulo@89	1770 aqua: 65535,
paulo@89	1771 aquamarine: 8388564,
paulo@89	1772 azure: 15794175,
paulo@89	1773 beige: 16119260,
paulo@89	1774 bisque: 16770244,
paulo@89	1775 black: 0,
paulo@89	1776 blanchedalmond: 16772045,
paulo@89	1777 blue: 255,
paulo@89	1778 blueviolet: 9055202,
paulo@89	1779 brown: 10824234,
paulo@89	1780 burlywood: 14596231,
paulo@89	1781 cadetblue: 6266528,
paulo@89	1782 chartreuse: 8388352,
paulo@89	1783 chocolate: 13789470,
paulo@89	1784 coral: 16744272,
paulo@89	1785 cornflowerblue: 6591981,
paulo@89	1786 cornsilk: 16775388,
paulo@89	1787 crimson: 14423100,
paulo@89	1788 cyan: 65535,
paulo@89	1789 darkblue: 139,
paulo@89	1790 darkcyan: 35723,
paulo@89	1791 darkgoldenrod: 12092939,
paulo@89	1792 darkgray: 11119017,
paulo@89	1793 darkgreen: 25600,
paulo@89	1794 darkgrey: 11119017,
paulo@89	1795 darkkhaki: 12433259,
paulo@89	1796 darkmagenta: 9109643,
paulo@89	1797 darkolivegreen: 5597999,
paulo@89	1798 darkorange: 16747520,
paulo@89	1799 darkorchid: 10040012,
paulo@89	1800 darkred: 9109504,
paulo@89	1801 darksalmon: 15308410,
paulo@89	1802 darkseagreen: 9419919,
paulo@89	1803 darkslateblue: 4734347,
paulo@89	1804 darkslategray: 3100495,
paulo@89	1805 darkslategrey: 3100495,
paulo@89	1806 darkturquoise: 52945,
paulo@89	1807 darkviolet: 9699539,
paulo@89	1808 deeppink: 16716947,
paulo@89	1809 deepskyblue: 49151,
paulo@89	1810 dimgray: 6908265,
paulo@89	1811 dimgrey: 6908265,
paulo@89	1812 dodgerblue: 2003199,
paulo@89	1813 firebrick: 11674146,
paulo@89	1814 floralwhite: 16775920,
paulo@89	1815 forestgreen: 2263842,
paulo@89	1816 fuchsia: 16711935,
paulo@89	1817 gainsboro: 14474460,
paulo@89	1818 ghostwhite: 16316671,
paulo@89	1819 gold: 16766720,
paulo@89	1820 goldenrod: 14329120,
paulo@89	1821 gray: 8421504,
paulo@89	1822 green: 32768,
paulo@89	1823 greenyellow: 11403055,
paulo@89	1824 grey: 8421504,
paulo@89	1825 honeydew: 15794160,
paulo@89	1826 hotpink: 16738740,
paulo@89	1827 indianred: 13458524,
paulo@89	1828 indigo: 4915330,
paulo@89	1829 ivory: 16777200,
paulo@89	1830 khaki: 15787660,
paulo@89	1831 lavender: 15132410,
paulo@89	1832 lavenderblush: 16773365,
paulo@89	1833 lawngreen: 8190976,
paulo@89	1834 lemonchiffon: 16775885,
paulo@89	1835 lightblue: 11393254,
paulo@89	1836 lightcoral: 15761536,
paulo@89	1837 lightcyan: 14745599,
paulo@89	1838 lightgoldenrodyellow: 16448210,
paulo@89	1839 lightgray: 13882323,
paulo@89	1840 lightgreen: 9498256,
paulo@89	1841 lightgrey: 13882323,
paulo@89	1842 lightpink: 16758465,
paulo@89	1843 lightsalmon: 16752762,
paulo@89	1844 lightseagreen: 2142890,
paulo@89	1845 lightskyblue: 8900346,
paulo@89	1846 lightslategray: 7833753,
paulo@89	1847 lightslategrey: 7833753,
paulo@89	1848 lightsteelblue: 11584734,
paulo@89	1849 lightyellow: 16777184,
paulo@89	1850 lime: 65280,
paulo@89	1851 limegreen: 3329330,
paulo@89	1852 linen: 16445670,
paulo@89	1853 magenta: 16711935,
paulo@89	1854 maroon: 8388608,
paulo@89	1855 mediumaquamarine: 6737322,
paulo@89	1856 mediumblue: 205,
paulo@89	1857 mediumorchid: 12211667,
paulo@89	1858 mediumpurple: 9662683,
paulo@89	1859 mediumseagreen: 3978097,
paulo@89	1860 mediumslateblue: 8087790,
paulo@89	1861 mediumspringgreen: 64154,
paulo@89	1862 mediumturquoise: 4772300,
paulo@89	1863 mediumvioletred: 13047173,
paulo@89	1864 midnightblue: 1644912,
paulo@89	1865 mintcream: 16121850,
paulo@89	1866 mistyrose: 16770273,
paulo@89	1867 moccasin: 16770229,
paulo@89	1868 navajowhite: 16768685,
paulo@89	1869 navy: 128,
paulo@89	1870 oldlace: 16643558,
paulo@89	1871 olive: 8421376,
paulo@89	1872 olivedrab: 7048739,
paulo@89	1873 orange: 16753920,
paulo@89	1874 orangered: 16729344,
paulo@89	1875 orchid: 14315734,
paulo@89	1876 palegoldenrod: 15657130,
paulo@89	1877 palegreen: 10025880,
paulo@89	1878 paleturquoise: 11529966,
paulo@89	1879 palevioletred: 14381203,
paulo@89	1880 papayawhip: 16773077,
paulo@89	1881 peachpuff: 16767673,
paulo@89	1882 peru: 13468991,
paulo@89	1883 pink: 16761035,
paulo@89	1884 plum: 14524637,
paulo@89	1885 powderblue: 11591910,
paulo@89	1886 purple: 8388736,
paulo@89	1887 rebeccapurple: 6697881,
paulo@89	1888 red: 16711680,
paulo@89	1889 rosybrown: 12357519,
paulo@89	1890 royalblue: 4286945,
paulo@89	1891 saddlebrown: 9127187,
paulo@89	1892 salmon: 16416882,
paulo@89	1893 sandybrown: 16032864,
paulo@89	1894 seagreen: 3050327,
paulo@89	1895 seashell: 16774638,
paulo@89	1896 sienna: 10506797,
paulo@89	1897 silver: 12632256,
paulo@89	1898 skyblue: 8900331,
paulo@89	1899 slateblue: 6970061,
paulo@89	1900 slategray: 7372944,
paulo@89	1901 slategrey: 7372944,
paulo@89	1902 snow: 16775930,
paulo@89	1903 springgreen: 65407,
paulo@89	1904 steelblue: 4620980,
paulo@89	1905 tan: 13808780,
paulo@89	1906 teal: 32896,
paulo@89	1907 thistle: 14204888,
paulo@89	1908 tomato: 16737095,
paulo@89	1909 turquoise: 4251856,
paulo@89	1910 violet: 15631086,
paulo@89	1911 wheat: 16113331,
paulo@89	1912 white: 16777215,
paulo@89	1913 whitesmoke: 16119285,
paulo@89	1914 yellow: 16776960,
paulo@89	1915 yellowgreen: 10145074
paulo@89	1916 });
paulo@89	1917 d3_rgb_names.forEach(function(key, value) {
paulo@89	1918 d3_rgb_names.set(key, d3_rgbNumber(value));
paulo@89	1919 });
paulo@89	1920 function d3_functor(v) {
paulo@89	1921 return typeof v === "function" ? v : function() {
paulo@89	1922 return v;
paulo@89	1923 };
paulo@89	1924 }
paulo@89	1925 d3.functor = d3_functor;
paulo@89	1926 d3.xhr = d3_xhrType(d3_identity);
paulo@89	1927 function d3_xhrType(response) {
paulo@89	1928 return function(url, mimeType, callback) {
paulo@89	1929 if (arguments.length === 2 && typeof mimeType === "function") callback = mimeType,
paulo@89	1930 mimeType = null;
paulo@89	1931 return d3_xhr(url, mimeType, response, callback);
paulo@89	1932 };
paulo@89	1933 }
paulo@89	1934 function d3_xhr(url, mimeType, response, callback) {
paulo@89	1935 var xhr = {}, dispatch = d3.dispatch("beforesend", "progress", "load", "error"), headers = {}, request = new XMLHttpRequest(), responseType = null;
paulo@89	1936 if (this.XDomainRequest && !("withCredentials" in request) && /^(http(s)?:)?\/\//.test(url)) request = new XDomainRequest();
paulo@89	1937 "onload" in request ? request.onload = request.onerror = respond : request.onreadystatechange = function() {
paulo@89	1938 request.readyState > 3 && respond();
paulo@89	1939 };
paulo@89	1940 function respond() {
paulo@89	1941 var status = request.status, result;
paulo@89	1942 if (!status && d3_xhrHasResponse(request) \|\| status >= 200 && status < 300 \|\| status === 304) {
paulo@89	1943 try {
paulo@89	1944 result = response.call(xhr, request);
paulo@89	1945 } catch (e) {
paulo@89	1946 dispatch.error.call(xhr, e);
paulo@89	1947 return;
paulo@89	1948 }
paulo@89	1949 dispatch.load.call(xhr, result);
paulo@89	1950 } else {
paulo@89	1951 dispatch.error.call(xhr, request);
paulo@89	1952 }
paulo@89	1953 }
paulo@89	1954 request.onprogress = function(event) {
paulo@89	1955 var o = d3.event;
paulo@89	1956 d3.event = event;
paulo@89	1957 try {
paulo@89	1958 dispatch.progress.call(xhr, request);
paulo@89	1959 } finally {
paulo@89	1960 d3.event = o;
paulo@89	1961 }
paulo@89	1962 };
paulo@89	1963 xhr.header = function(name, value) {
paulo@89	1964 name = (name + "").toLowerCase();
paulo@89	1965 if (arguments.length < 2) return headers[name];
paulo@89	1966 if (value == null) delete headers[name]; else headers[name] = value + "";
paulo@89	1967 return xhr;
paulo@89	1968 };
paulo@89	1969 xhr.mimeType = function(value) {
paulo@89	1970 if (!arguments.length) return mimeType;
paulo@89	1971 mimeType = value == null ? null : value + "";
paulo@89	1972 return xhr;
paulo@89	1973 };
paulo@89	1974 xhr.responseType = function(value) {
paulo@89	1975 if (!arguments.length) return responseType;
paulo@89	1976 responseType = value;
paulo@89	1977 return xhr;
paulo@89	1978 };
paulo@89	1979 xhr.response = function(value) {
paulo@89	1980 response = value;
paulo@89	1981 return xhr;
paulo@89	1982 };
paulo@89	1983 [ "get", "post" ].forEach(function(method) {
paulo@89	1984 xhr[method] = function() {
paulo@89	1985 return xhr.send.apply(xhr, [ method ].concat(d3_array(arguments)));
paulo@89	1986 };
paulo@89	1987 });
paulo@89	1988 xhr.send = function(method, data, callback) {
paulo@89	1989 if (arguments.length === 2 && typeof data === "function") callback = data, data = null;
paulo@89	1990 request.open(method, url, true);
paulo@89	1991 if (mimeType != null && !("accept" in headers)) headers["accept"] = mimeType + ",/";
paulo@89	1992 if (request.setRequestHeader) for (var name in headers) request.setRequestHeader(name, headers[name]);
paulo@89	1993 if (mimeType != null && request.overrideMimeType) request.overrideMimeType(mimeType);
paulo@89	1994 if (responseType != null) request.responseType = responseType;
paulo@89	1995 if (callback != null) xhr.on("error", callback).on("load", function(request) {
paulo@89	1996 callback(null, request);
paulo@89	1997 });
paulo@89	1998 dispatch.beforesend.call(xhr, request);
paulo@89	1999 request.send(data == null ? null : data);
paulo@89	2000 return xhr;
paulo@89	2001 };
paulo@89	2002 xhr.abort = function() {
paulo@89	2003 request.abort();
paulo@89	2004 return xhr;
paulo@89	2005 };
paulo@89	2006 d3.rebind(xhr, dispatch, "on");
paulo@89	2007 return callback == null ? xhr : xhr.get(d3_xhr_fixCallback(callback));
paulo@89	2008 }
paulo@89	2009 function d3_xhr_fixCallback(callback) {
paulo@89	2010 return callback.length === 1 ? function(error, request) {
paulo@89	2011 callback(error == null ? request : null);
paulo@89	2012 } : callback;
paulo@89	2013 }
paulo@89	2014 function d3_xhrHasResponse(request) {
paulo@89	2015 var type = request.responseType;
paulo@89	2016 return type && type !== "text" ? request.response : request.responseText;
paulo@89	2017 }
paulo@89	2018 d3.dsv = function(delimiter, mimeType) {
paulo@89	2019 var reFormat = new RegExp('["' + delimiter + "\n]"), delimiterCode = delimiter.charCodeAt(0);
paulo@89	2020 function dsv(url, row, callback) {
paulo@89	2021 if (arguments.length < 3) callback = row, row = null;
paulo@89	2022 var xhr = d3_xhr(url, mimeType, row == null ? response : typedResponse(row), callback);
paulo@89	2023 xhr.row = function(_) {
paulo@89	2024 return arguments.length ? xhr.response((row = _) == null ? response : typedResponse(_)) : row;
paulo@89	2025 };
paulo@89	2026 return xhr;
paulo@89	2027 }
paulo@89	2028 function response(request) {
paulo@89	2029 return dsv.parse(request.responseText);
paulo@89	2030 }
paulo@89	2031 function typedResponse(f) {
paulo@89	2032 return function(request) {
paulo@89	2033 return dsv.parse(request.responseText, f);
paulo@89	2034 };
paulo@89	2035 }
paulo@89	2036 dsv.parse = function(text, f) {
paulo@89	2037 var o;
paulo@89	2038 return dsv.parseRows(text, function(row, i) {
paulo@89	2039 if (o) return o(row, i - 1);
paulo@89	2040 var a = new Function("d", "return {" + row.map(function(name, i) {
paulo@89	2041 return JSON.stringify(name) + ": d[" + i + "]";
paulo@89	2042 }).join(",") + "}");
paulo@89	2043 o = f ? function(row, i) {
paulo@89	2044 return f(a(row), i);
paulo@89	2045 } : a;
paulo@89	2046 });
paulo@89	2047 };
paulo@89	2048 dsv.parseRows = function(text, f) {
paulo@89	2049 var EOL = {}, EOF = {}, rows = [], N = text.length, I = 0, n = 0, t, eol;
paulo@89	2050 function token() {
paulo@89	2051 if (I >= N) return EOF;
paulo@89	2052 if (eol) return eol = false, EOL;
paulo@89	2053 var j = I;
paulo@89	2054 if (text.charCodeAt(j) === 34) {
paulo@89	2055 var i = j;
paulo@89	2056 while (i++ < N) {
paulo@89	2057 if (text.charCodeAt(i) === 34) {
paulo@89	2058 if (text.charCodeAt(i + 1) !== 34) break;
paulo@89	2059 ++i;
paulo@89	2060 }
paulo@89	2061 }
paulo@89	2062 I = i + 2;
paulo@89	2063 var c = text.charCodeAt(i + 1);
paulo@89	2064 if (c === 13) {
paulo@89	2065 eol = true;
paulo@89	2066 if (text.charCodeAt(i + 2) === 10) ++I;
paulo@89	2067 } else if (c === 10) {
paulo@89	2068 eol = true;
paulo@89	2069 }
paulo@89	2070 return text.slice(j + 1, i).replace(/""/g, '"');
paulo@89	2071 }
paulo@89	2072 while (I < N) {
paulo@89	2073 var c = text.charCodeAt(I++), k = 1;
paulo@89	2074 if (c === 10) eol = true; else if (c === 13) {
paulo@89	2075 eol = true;
paulo@89	2076 if (text.charCodeAt(I) === 10) ++I, ++k;
paulo@89	2077 } else if (c !== delimiterCode) continue;
paulo@89	2078 return text.slice(j, I - k);
paulo@89	2079 }
paulo@89	2080 return text.slice(j);
paulo@89	2081 }
paulo@89	2082 while ((t = token()) !== EOF) {
paulo@89	2083 var a = [];
paulo@89	2084 while (t !== EOL && t !== EOF) {
paulo@89	2085 a.push(t);
paulo@89	2086 t = token();
paulo@89	2087 }
paulo@89	2088 if (f && (a = f(a, n++)) == null) continue;
paulo@89	2089 rows.push(a);
paulo@89	2090 }
paulo@89	2091 return rows;
paulo@89	2092 };
paulo@89	2093 dsv.format = function(rows) {
paulo@89	2094 if (Array.isArray(rows[0])) return dsv.formatRows(rows);
paulo@89	2095 var fieldSet = new d3_Set(), fields = [];
paulo@89	2096 rows.forEach(function(row) {
paulo@89	2097 for (var field in row) {
paulo@89	2098 if (!fieldSet.has(field)) {
paulo@89	2099 fields.push(fieldSet.add(field));
paulo@89	2100 }
paulo@89	2101 }
paulo@89	2102 });
paulo@89	2103 return [ fields.map(formatValue).join(delimiter) ].concat(rows.map(function(row) {
paulo@89	2104 return fields.map(function(field) {
paulo@89	2105 return formatValue(row[field]);
paulo@89	2106 }).join(delimiter);
paulo@89	2107 })).join("\n");
paulo@89	2108 };
paulo@89	2109 dsv.formatRows = function(rows) {
paulo@89	2110 return rows.map(formatRow).join("\n");
paulo@89	2111 };
paulo@89	2112 function formatRow(row) {
paulo@89	2113 return row.map(formatValue).join(delimiter);
paulo@89	2114 }
paulo@89	2115 function formatValue(text) {
paulo@89	2116 return reFormat.test(text) ? '"' + text.replace(/\"/g, '""') + '"' : text;
paulo@89	2117 }
paulo@89	2118 return dsv;
paulo@89	2119 };
paulo@89	2120 d3.csv = d3.dsv(",", "text/csv");
paulo@89	2121 d3.tsv = d3.dsv(" ", "text/tab-separated-values");
paulo@89	2122 var d3_timer_queueHead, d3_timer_queueTail, d3_timer_interval, d3_timer_timeout, d3_timer_frame = this[d3_vendorSymbol(this, "requestAnimationFrame")] \|\| function(callback) {
paulo@89	2123 setTimeout(callback, 17);
paulo@89	2124 };
paulo@89	2125 d3.timer = function() {
paulo@89	2126 d3_timer.apply(this, arguments);
paulo@89	2127 };
paulo@89	2128 function d3_timer(callback, delay, then) {
paulo@89	2129 var n = arguments.length;
paulo@89	2130 if (n < 2) delay = 0;
paulo@89	2131 if (n < 3) then = Date.now();
paulo@89	2132 var time = then + delay, timer = {
paulo@89	2133 c: callback,
paulo@89	2134 t: time,
paulo@89	2135 n: null
paulo@89	2136 };
paulo@89	2137 if (d3_timer_queueTail) d3_timer_queueTail.n = timer; else d3_timer_queueHead = timer;
paulo@89	2138 d3_timer_queueTail = timer;
paulo@89	2139 if (!d3_timer_interval) {
paulo@89	2140 d3_timer_timeout = clearTimeout(d3_timer_timeout);
paulo@89	2141 d3_timer_interval = 1;
paulo@89	2142 d3_timer_frame(d3_timer_step);
paulo@89	2143 }
paulo@89	2144 return timer;
paulo@89	2145 }
paulo@89	2146 function d3_timer_step() {
paulo@89	2147 var now = d3_timer_mark(), delay = d3_timer_sweep() - now;
paulo@89	2148 if (delay > 24) {
paulo@89	2149 if (isFinite(delay)) {
paulo@89	2150 clearTimeout(d3_timer_timeout);
paulo@89	2151 d3_timer_timeout = setTimeout(d3_timer_step, delay);
paulo@89	2152 }
paulo@89	2153 d3_timer_interval = 0;
paulo@89	2154 } else {
paulo@89	2155 d3_timer_interval = 1;
paulo@89	2156 d3_timer_frame(d3_timer_step);
paulo@89	2157 }
paulo@89	2158 }
paulo@89	2159 d3.timer.flush = function() {
paulo@89	2160 d3_timer_mark();
paulo@89	2161 d3_timer_sweep();
paulo@89	2162 };
paulo@89	2163 function d3_timer_mark() {
paulo@89	2164 var now = Date.now(), timer = d3_timer_queueHead;
paulo@89	2165 while (timer) {
paulo@89	2166 if (now >= timer.t && timer.c(now - timer.t)) timer.c = null;
paulo@89	2167 timer = timer.n;
paulo@89	2168 }
paulo@89	2169 return now;
paulo@89	2170 }
paulo@89	2171 function d3_timer_sweep() {
paulo@89	2172 var t0, t1 = d3_timer_queueHead, time = Infinity;
paulo@89	2173 while (t1) {
paulo@89	2174 if (t1.c) {
paulo@89	2175 if (t1.t < time) time = t1.t;
paulo@89	2176 t1 = (t0 = t1).n;
paulo@89	2177 } else {
paulo@89	2178 t1 = t0 ? t0.n = t1.n : d3_timer_queueHead = t1.n;
paulo@89	2179 }
paulo@89	2180 }
paulo@89	2181 d3_timer_queueTail = t0;
paulo@89	2182 return time;
paulo@89	2183 }
paulo@89	2184 function d3_format_precision(x, p) {
paulo@89	2185 return p - (x ? Math.ceil(Math.log(x) / Math.LN10) : 1);
paulo@89	2186 }
paulo@89	2187 d3.round = function(x, n) {
paulo@89	2188 return n ? Math.round(x * (n = Math.pow(10, n))) / n : Math.round(x);
paulo@89	2189 };
paulo@89	2190 var d3_formatPrefixes = [ "y", "z", "a", "f", "p", "n", "µ", "m", "", "k", "M", "G", "T", "P", "E", "Z", "Y" ].map(d3_formatPrefix);
paulo@89	2191 d3.formatPrefix = function(value, precision) {
paulo@89	2192 var i = 0;
paulo@89	2193 if (value = +value) {
paulo@89	2194 if (value < 0) value *= -1;
paulo@89	2195 if (precision) value = d3.round(value, d3_format_precision(value, precision));
paulo@89	2196 i = 1 + Math.floor(1e-12 + Math.log(value) / Math.LN10);
paulo@89	2197 i = Math.max(-24, Math.min(24, Math.floor((i - 1) / 3) * 3));
paulo@89	2198 }
paulo@89	2199 return d3_formatPrefixes[8 + i / 3];
paulo@89	2200 };
paulo@89	2201 function d3_formatPrefix(d, i) {
paulo@89	2202 var k = Math.pow(10, abs(8 - i) * 3);
paulo@89	2203 return {
paulo@89	2204 scale: i > 8 ? function(d) {
paulo@89	2205 return d / k;
paulo@89	2206 } : function(d) {
paulo@89	2207 return d * k;
paulo@89	2208 },
paulo@89	2209 symbol: d
paulo@89	2210 };
paulo@89	2211 }
paulo@89	2212 function d3_locale_numberFormat(locale) {
paulo@89	2213 var locale_decimal = locale.decimal, locale_thousands = locale.thousands, locale_grouping = locale.grouping, locale_currency = locale.currency, formatGroup = locale_grouping && locale_thousands ? function(value, width) {
paulo@89	2214 var i = value.length, t = [], j = 0, g = locale_grouping[0], length = 0;
paulo@89	2215 while (i > 0 && g > 0) {
paulo@89	2216 if (length + g + 1 > width) g = Math.max(1, width - length);
paulo@89	2217 t.push(value.substring(i -= g, i + g));
paulo@89	2218 if ((length += g + 1) > width) break;
paulo@89	2219 g = locale_grouping[j = (j + 1) % locale_grouping.length];
paulo@89	2220 }
paulo@89	2221 return t.reverse().join(locale_thousands);
paulo@89	2222 } : d3_identity;
paulo@89	2223 return function(specifier) {
paulo@89	2224 var match = d3_format_re.exec(specifier), fill = match[1] \|\| " ", align = match[2] \|\| ">", sign = match[3] \|\| "-", symbol = match[4] \|\| "", zfill = match[5], width = +match[6], comma = match[7], precision = match[8], type = match[9], scale = 1, prefix = "", suffix = "", integer = false, exponent = true;
paulo@89	2225 if (precision) precision = +precision.substring(1);
paulo@89	2226 if (zfill \|\| fill === "0" && align === "=") {
paulo@89	2227 zfill = fill = "0";
paulo@89	2228 align = "=";
paulo@89	2229 }
paulo@89	2230 switch (type) {
paulo@89	2231 case "n":
paulo@89	2232 comma = true;
paulo@89	2233 type = "g";
paulo@89	2234 break;
paulo@89	2235
paulo@89	2236 case "%":
paulo@89	2237 scale = 100;
paulo@89	2238 suffix = "%";
paulo@89	2239 type = "f";
paulo@89	2240 break;
paulo@89	2241
paulo@89	2242 case "p":
paulo@89	2243 scale = 100;
paulo@89	2244 suffix = "%";
paulo@89	2245 type = "r";
paulo@89	2246 break;
paulo@89	2247
paulo@89	2248 case "b":
paulo@89	2249 case "o":
paulo@89	2250 case "x":
paulo@89	2251 case "X":
paulo@89	2252 if (symbol === "#") prefix = "0" + type.toLowerCase();
paulo@89	2253
paulo@89	2254 case "c":
paulo@89	2255 exponent = false;
paulo@89	2256
paulo@89	2257 case "d":
paulo@89	2258 integer = true;
paulo@89	2259 precision = 0;
paulo@89	2260 break;
paulo@89	2261
paulo@89	2262 case "s":
paulo@89	2263 scale = -1;
paulo@89	2264 type = "r";
paulo@89	2265 break;
paulo@89	2266 }
paulo@89	2267 if (symbol === "$") prefix = locale_currency[0], suffix = locale_currency[1];
paulo@89	2268 if (type == "r" && !precision) type = "g";
paulo@89	2269 if (precision != null) {
paulo@89	2270 if (type == "g") precision = Math.max(1, Math.min(21, precision)); else if (type == "e" \|\| type == "f") precision = Math.max(0, Math.min(20, precision));
paulo@89	2271 }
paulo@89	2272 type = d3_format_types.get(type) \|\| d3_format_typeDefault;
paulo@89	2273 var zcomma = zfill && comma;
paulo@89	2274 return function(value) {
paulo@89	2275 var fullSuffix = suffix;
paulo@89	2276 if (integer && value % 1) return "";
paulo@89	2277 var negative = value < 0 \|\| value === 0 && 1 / value < 0 ? (value = -value, "-") : sign === "-" ? "" : sign;
paulo@89	2278 if (scale < 0) {
paulo@89	2279 var unit = d3.formatPrefix(value, precision);
paulo@89	2280 value = unit.scale(value);
paulo@89	2281 fullSuffix = unit.symbol + suffix;
paulo@89	2282 } else {
paulo@89	2283 value *= scale;
paulo@89	2284 }
paulo@89	2285 value = type(value, precision);
paulo@89	2286 var i = value.lastIndexOf("."), before, after;
paulo@89	2287 if (i < 0) {
paulo@89	2288 var j = exponent ? value.lastIndexOf("e") : -1;
paulo@89	2289 if (j < 0) before = value, after = ""; else before = value.substring(0, j), after = value.substring(j);
paulo@89	2290 } else {
paulo@89	2291 before = value.substring(0, i);
paulo@89	2292 after = locale_decimal + value.substring(i + 1);
paulo@89	2293 }
paulo@89	2294 if (!zfill && comma) before = formatGroup(before, Infinity);
paulo@89	2295 var length = prefix.length + before.length + after.length + (zcomma ? 0 : negative.length), padding = length < width ? new Array(length = width - length + 1).join(fill) : "";
paulo@89	2296 if (zcomma) before = formatGroup(padding + before, padding.length ? width - after.length : Infinity);
paulo@89	2297 negative += prefix;
paulo@89	2298 value = before + after;
paulo@89	2299 return (align === "<" ? negative + value + padding : align === ">" ? padding + negative + value : align === "^" ? padding.substring(0, length >>= 1) + negative + value + padding.substring(length) : negative + (zcomma ? value : padding + value)) + fullSuffix;
paulo@89	2300 };
paulo@89	2301 };
paulo@89	2302 }
paulo@89	2303 var d3_format_re = /(?:([^{])?([<>=^]))?([+\- ])?([$#])?(0)?(\d+)?(,)?(\.-?\d+)?([a-z%])?/i;
paulo@89	2304 var d3_format_types = d3.map({
paulo@89	2305 b: function(x) {
paulo@89	2306 return x.toString(2);
paulo@89	2307 },
paulo@89	2308 c: function(x) {
paulo@89	2309 return String.fromCharCode(x);
paulo@89	2310 },
paulo@89	2311 o: function(x) {
paulo@89	2312 return x.toString(8);
paulo@89	2313 },
paulo@89	2314 x: function(x) {
paulo@89	2315 return x.toString(16);
paulo@89	2316 },
paulo@89	2317 X: function(x) {
paulo@89	2318 return x.toString(16).toUpperCase();
paulo@89	2319 },
paulo@89	2320 g: function(x, p) {
paulo@89	2321 return x.toPrecision(p);
paulo@89	2322 },
paulo@89	2323 e: function(x, p) {
paulo@89	2324 return x.toExponential(p);
paulo@89	2325 },
paulo@89	2326 f: function(x, p) {
paulo@89	2327 return x.toFixed(p);
paulo@89	2328 },
paulo@89	2329 r: function(x, p) {
paulo@89	2330 return (x = d3.round(x, d3_format_precision(x, p))).toFixed(Math.max(0, Math.min(20, d3_format_precision(x * (1 + 1e-15), p))));
paulo@89	2331 }
paulo@89	2332 });
paulo@89	2333 function d3_format_typeDefault(x) {
paulo@89	2334 return x + "";
paulo@89	2335 }
paulo@89	2336 var d3_time = d3.time = {}, d3_date = Date;
paulo@89	2337 function d3_date_utc() {
paulo@89	2338 this._ = new Date(arguments.length > 1 ? Date.UTC.apply(this, arguments) : arguments[0]);
paulo@89	2339 }
paulo@89	2340 d3_date_utc.prototype = {
paulo@89	2341 getDate: function() {
paulo@89	2342 return this._.getUTCDate();
paulo@89	2343 },
paulo@89	2344 getDay: function() {
paulo@89	2345 return this._.getUTCDay();
paulo@89	2346 },
paulo@89	2347 getFullYear: function() {
paulo@89	2348 return this._.getUTCFullYear();
paulo@89	2349 },
paulo@89	2350 getHours: function() {
paulo@89	2351 return this._.getUTCHours();
paulo@89	2352 },
paulo@89	2353 getMilliseconds: function() {
paulo@89	2354 return this._.getUTCMilliseconds();
paulo@89	2355 },
paulo@89	2356 getMinutes: function() {
paulo@89	2357 return this._.getUTCMinutes();
paulo@89	2358 },
paulo@89	2359 getMonth: function() {
paulo@89	2360 return this._.getUTCMonth();
paulo@89	2361 },
paulo@89	2362 getSeconds: function() {
paulo@89	2363 return this._.getUTCSeconds();
paulo@89	2364 },
paulo@89	2365 getTime: function() {
paulo@89	2366 return this._.getTime();
paulo@89	2367 },
paulo@89	2368 getTimezoneOffset: function() {
paulo@89	2369 return 0;
paulo@89	2370 },
paulo@89	2371 valueOf: function() {
paulo@89	2372 return this._.valueOf();
paulo@89	2373 },
paulo@89	2374 setDate: function() {
paulo@89	2375 d3_time_prototype.setUTCDate.apply(this._, arguments);
paulo@89	2376 },
paulo@89	2377 setDay: function() {
paulo@89	2378 d3_time_prototype.setUTCDay.apply(this._, arguments);
paulo@89	2379 },
paulo@89	2380 setFullYear: function() {
paulo@89	2381 d3_time_prototype.setUTCFullYear.apply(this._, arguments);
paulo@89	2382 },
paulo@89	2383 setHours: function() {
paulo@89	2384 d3_time_prototype.setUTCHours.apply(this._, arguments);
paulo@89	2385 },
paulo@89	2386 setMilliseconds: function() {
paulo@89	2387 d3_time_prototype.setUTCMilliseconds.apply(this._, arguments);
paulo@89	2388 },
paulo@89	2389 setMinutes: function() {
paulo@89	2390 d3_time_prototype.setUTCMinutes.apply(this._, arguments);
paulo@89	2391 },
paulo@89	2392 setMonth: function() {
paulo@89	2393 d3_time_prototype.setUTCMonth.apply(this._, arguments);
paulo@89	2394 },
paulo@89	2395 setSeconds: function() {
paulo@89	2396 d3_time_prototype.setUTCSeconds.apply(this._, arguments);
paulo@89	2397 },
paulo@89	2398 setTime: function() {
paulo@89	2399 d3_time_prototype.setTime.apply(this._, arguments);
paulo@89	2400 }
paulo@89	2401 };
paulo@89	2402 var d3_time_prototype = Date.prototype;
paulo@89	2403 function d3_time_interval(local, step, number) {
paulo@89	2404 function round(date) {
paulo@89	2405 var d0 = local(date), d1 = offset(d0, 1);
paulo@89	2406 return date - d0 < d1 - date ? d0 : d1;
paulo@89	2407 }
paulo@89	2408 function ceil(date) {
paulo@89	2409 step(date = local(new d3_date(date - 1)), 1);
paulo@89	2410 return date;
paulo@89	2411 }
paulo@89	2412 function offset(date, k) {
paulo@89	2413 step(date = new d3_date(+date), k);
paulo@89	2414 return date;
paulo@89	2415 }
paulo@89	2416 function range(t0, t1, dt) {
paulo@89	2417 var time = ceil(t0), times = [];
paulo@89	2418 if (dt > 1) {
paulo@89	2419 while (time < t1) {
paulo@89	2420 if (!(number(time) % dt)) times.push(new Date(+time));
paulo@89	2421 step(time, 1);
paulo@89	2422 }
paulo@89	2423 } else {
paulo@89	2424 while (time < t1) times.push(new Date(+time)), step(time, 1);
paulo@89	2425 }
paulo@89	2426 return times;
paulo@89	2427 }
paulo@89	2428 function range_utc(t0, t1, dt) {
paulo@89	2429 try {
paulo@89	2430 d3_date = d3_date_utc;
paulo@89	2431 var utc = new d3_date_utc();
paulo@89	2432 utc._ = t0;
paulo@89	2433 return range(utc, t1, dt);
paulo@89	2434 } finally {
paulo@89	2435 d3_date = Date;
paulo@89	2436 }
paulo@89	2437 }
paulo@89	2438 local.floor = local;
paulo@89	2439 local.round = round;
paulo@89	2440 local.ceil = ceil;
paulo@89	2441 local.offset = offset;
paulo@89	2442 local.range = range;
paulo@89	2443 var utc = local.utc = d3_time_interval_utc(local);
paulo@89	2444 utc.floor = utc;
paulo@89	2445 utc.round = d3_time_interval_utc(round);
paulo@89	2446 utc.ceil = d3_time_interval_utc(ceil);
paulo@89	2447 utc.offset = d3_time_interval_utc(offset);
paulo@89	2448 utc.range = range_utc;
paulo@89	2449 return local;
paulo@89	2450 }
paulo@89	2451 function d3_time_interval_utc(method) {
paulo@89	2452 return function(date, k) {
paulo@89	2453 try {
paulo@89	2454 d3_date = d3_date_utc;
paulo@89	2455 var utc = new d3_date_utc();
paulo@89	2456 utc._ = date;
paulo@89	2457 return method(utc, k)._;
paulo@89	2458 } finally {
paulo@89	2459 d3_date = Date;
paulo@89	2460 }
paulo@89	2461 };
paulo@89	2462 }
paulo@89	2463 d3_time.year = d3_time_interval(function(date) {
paulo@89	2464 date = d3_time.day(date);
paulo@89	2465 date.setMonth(0, 1);
paulo@89	2466 return date;
paulo@89	2467 }, function(date, offset) {
paulo@89	2468 date.setFullYear(date.getFullYear() + offset);
paulo@89	2469 }, function(date) {
paulo@89	2470 return date.getFullYear();
paulo@89	2471 });
paulo@89	2472 d3_time.years = d3_time.year.range;
paulo@89	2473 d3_time.years.utc = d3_time.year.utc.range;
paulo@89	2474 d3_time.day = d3_time_interval(function(date) {
paulo@89	2475 var day = new d3_date(2e3, 0);
paulo@89	2476 day.setFullYear(date.getFullYear(), date.getMonth(), date.getDate());
paulo@89	2477 return day;
paulo@89	2478 }, function(date, offset) {
paulo@89	2479 date.setDate(date.getDate() + offset);
paulo@89	2480 }, function(date) {
paulo@89	2481 return date.getDate() - 1;
paulo@89	2482 });
paulo@89	2483 d3_time.days = d3_time.day.range;
paulo@89	2484 d3_time.days.utc = d3_time.day.utc.range;
paulo@89	2485 d3_time.dayOfYear = function(date) {
paulo@89	2486 var year = d3_time.year(date);
paulo@89	2487 return Math.floor((date - year - (date.getTimezoneOffset() - year.getTimezoneOffset()) * 6e4) / 864e5);
paulo@89	2488 };
paulo@89	2489 [ "sunday", "monday", "tuesday", "wednesday", "thursday", "friday", "saturday" ].forEach(function(day, i) {
paulo@89	2490 i = 7 - i;
paulo@89	2491 var interval = d3_time[day] = d3_time_interval(function(date) {
paulo@89	2492 (date = d3_time.day(date)).setDate(date.getDate() - (date.getDay() + i) % 7);
paulo@89	2493 return date;
paulo@89	2494 }, function(date, offset) {
paulo@89	2495 date.setDate(date.getDate() + Math.floor(offset) * 7);
paulo@89	2496 }, function(date) {
paulo@89	2497 var day = d3_time.year(date).getDay();
paulo@89	2498 return Math.floor((d3_time.dayOfYear(date) + (day + i) % 7) / 7) - (day !== i);
paulo@89	2499 });
paulo@89	2500 d3_time[day + "s"] = interval.range;
paulo@89	2501 d3_time[day + "s"].utc = interval.utc.range;
paulo@89	2502 d3_time[day + "OfYear"] = function(date) {
paulo@89	2503 var day = d3_time.year(date).getDay();
paulo@89	2504 return Math.floor((d3_time.dayOfYear(date) + (day + i) % 7) / 7);
paulo@89	2505 };
paulo@89	2506 });
paulo@89	2507 d3_time.week = d3_time.sunday;
paulo@89	2508 d3_time.weeks = d3_time.sunday.range;
paulo@89	2509 d3_time.weeks.utc = d3_time.sunday.utc.range;
paulo@89	2510 d3_time.weekOfYear = d3_time.sundayOfYear;
paulo@89	2511 function d3_locale_timeFormat(locale) {
paulo@89	2512 var locale_dateTime = locale.dateTime, locale_date = locale.date, locale_time = locale.time, locale_periods = locale.periods, locale_days = locale.days, locale_shortDays = locale.shortDays, locale_months = locale.months, locale_shortMonths = locale.shortMonths;
paulo@89	2513 function d3_time_format(template) {
paulo@89	2514 var n = template.length;
paulo@89	2515 function format(date) {
paulo@89	2516 var string = [], i = -1, j = 0, c, p, f;
paulo@89	2517 while (++i < n) {
paulo@89	2518 if (template.charCodeAt(i) === 37) {
paulo@89	2519 string.push(template.slice(j, i));
paulo@89	2520 if ((p = d3_time_formatPads[c = template.charAt(++i)]) != null) c = template.charAt(++i);
paulo@89	2521 if (f = d3_time_formats[c]) c = f(date, p == null ? c === "e" ? " " : "0" : p);
paulo@89	2522 string.push(c);
paulo@89	2523 j = i + 1;
paulo@89	2524 }
paulo@89	2525 }
paulo@89	2526 string.push(template.slice(j, i));
paulo@89	2527 return string.join("");
paulo@89	2528 }
paulo@89	2529 format.parse = function(string) {
paulo@89	2530 var d = {
paulo@89	2531 y: 1900,
paulo@89	2532 m: 0,
paulo@89	2533 d: 1,
paulo@89	2534 H: 0,
paulo@89	2535 M: 0,
paulo@89	2536 S: 0,
paulo@89	2537 L: 0,
paulo@89	2538 Z: null
paulo@89	2539 }, i = d3_time_parse(d, template, string, 0);
paulo@89	2540 if (i != string.length) return null;
paulo@89	2541 if ("p" in d) d.H = d.H % 12 + d.p * 12;
paulo@89	2542 var localZ = d.Z != null && d3_date !== d3_date_utc, date = new (localZ ? d3_date_utc : d3_date)();
paulo@89	2543 if ("j" in d) date.setFullYear(d.y, 0, d.j); else if ("W" in d \|\| "U" in d) {
paulo@89	2544 if (!("w" in d)) d.w = "W" in d ? 1 : 0;
paulo@89	2545 date.setFullYear(d.y, 0, 1);
paulo@89	2546 date.setFullYear(d.y, 0, "W" in d ? (d.w + 6) % 7 + d.W * 7 - (date.getDay() + 5) % 7 : d.w + d.U * 7 - (date.getDay() + 6) % 7);
paulo@89	2547 } else date.setFullYear(d.y, d.m, d.d);
paulo@89	2548 date.setHours(d.H + (d.Z / 100 \| 0), d.M + d.Z % 100, d.S, d.L);
paulo@89	2549 return localZ ? date._ : date;
paulo@89	2550 };
paulo@89	2551 format.toString = function() {
paulo@89	2552 return template;
paulo@89	2553 };
paulo@89	2554 return format;
paulo@89	2555 }
paulo@89	2556 function d3_time_parse(date, template, string, j) {
paulo@89	2557 var c, p, t, i = 0, n = template.length, m = string.length;
paulo@89	2558 while (i < n) {
paulo@89	2559 if (j >= m) return -1;
paulo@89	2560 c = template.charCodeAt(i++);
paulo@89	2561 if (c === 37) {
paulo@89	2562 t = template.charAt(i++);
paulo@89	2563 p = d3_time_parsers[t in d3_time_formatPads ? template.charAt(i++) : t];
paulo@89	2564 if (!p \|\| (j = p(date, string, j)) < 0) return -1;
paulo@89	2565 } else if (c != string.charCodeAt(j++)) {
paulo@89	2566 return -1;
paulo@89	2567 }
paulo@89	2568 }
paulo@89	2569 return j;
paulo@89	2570 }
paulo@89	2571 d3_time_format.utc = function(template) {
paulo@89	2572 var local = d3_time_format(template);
paulo@89	2573 function format(date) {
paulo@89	2574 try {
paulo@89	2575 d3_date = d3_date_utc;
paulo@89	2576 var utc = new d3_date();
paulo@89	2577 utc._ = date;
paulo@89	2578 return local(utc);
paulo@89	2579 } finally {
paulo@89	2580 d3_date = Date;
paulo@89	2581 }
paulo@89	2582 }
paulo@89	2583 format.parse = function(string) {
paulo@89	2584 try {
paulo@89	2585 d3_date = d3_date_utc;
paulo@89	2586 var date = local.parse(string);
paulo@89	2587 return date && date._;
paulo@89	2588 } finally {
paulo@89	2589 d3_date = Date;
paulo@89	2590 }
paulo@89	2591 };
paulo@89	2592 format.toString = local.toString;
paulo@89	2593 return format;
paulo@89	2594 };
paulo@89	2595 d3_time_format.multi = d3_time_format.utc.multi = d3_time_formatMulti;
paulo@89	2596 var d3_time_periodLookup = d3.map(), d3_time_dayRe = d3_time_formatRe(locale_days), d3_time_dayLookup = d3_time_formatLookup(locale_days), d3_time_dayAbbrevRe = d3_time_formatRe(locale_shortDays), d3_time_dayAbbrevLookup = d3_time_formatLookup(locale_shortDays), d3_time_monthRe = d3_time_formatRe(locale_months), d3_time_monthLookup = d3_time_formatLookup(locale_months), d3_time_monthAbbrevRe = d3_time_formatRe(locale_shortMonths), d3_time_monthAbbrevLookup = d3_time_formatLookup(locale_shortMonths);
paulo@89	2597 locale_periods.forEach(function(p, i) {
paulo@89	2598 d3_time_periodLookup.set(p.toLowerCase(), i);
paulo@89	2599 });
paulo@89	2600 var d3_time_formats = {
paulo@89	2601 a: function(d) {
paulo@89	2602 return locale_shortDays[d.getDay()];
paulo@89	2603 },
paulo@89	2604 A: function(d) {
paulo@89	2605 return locale_days[d.getDay()];
paulo@89	2606 },
paulo@89	2607 b: function(d) {
paulo@89	2608 return locale_shortMonths[d.getMonth()];
paulo@89	2609 },
paulo@89	2610 B: function(d) {
paulo@89	2611 return locale_months[d.getMonth()];
paulo@89	2612 },
paulo@89	2613 c: d3_time_format(locale_dateTime),
paulo@89	2614 d: function(d, p) {
paulo@89	2615 return d3_time_formatPad(d.getDate(), p, 2);
paulo@89	2616 },
paulo@89	2617 e: function(d, p) {
paulo@89	2618 return d3_time_formatPad(d.getDate(), p, 2);
paulo@89	2619 },
paulo@89	2620 H: function(d, p) {
paulo@89	2621 return d3_time_formatPad(d.getHours(), p, 2);
paulo@89	2622 },
paulo@89	2623 I: function(d, p) {
paulo@89	2624 return d3_time_formatPad(d.getHours() % 12 \|\| 12, p, 2);
paulo@89	2625 },
paulo@89	2626 j: function(d, p) {
paulo@89	2627 return d3_time_formatPad(1 + d3_time.dayOfYear(d), p, 3);
paulo@89	2628 },
paulo@89	2629 L: function(d, p) {
paulo@89	2630 return d3_time_formatPad(d.getMilliseconds(), p, 3);
paulo@89	2631 },
paulo@89	2632 m: function(d, p) {
paulo@89	2633 return d3_time_formatPad(d.getMonth() + 1, p, 2);
paulo@89	2634 },
paulo@89	2635 M: function(d, p) {
paulo@89	2636 return d3_time_formatPad(d.getMinutes(), p, 2);
paulo@89	2637 },
paulo@89	2638 p: function(d) {
paulo@89	2639 return locale_periods[+(d.getHours() >= 12)];
paulo@89	2640 },
paulo@89	2641 S: function(d, p) {
paulo@89	2642 return d3_time_formatPad(d.getSeconds(), p, 2);
paulo@89	2643 },
paulo@89	2644 U: function(d, p) {
paulo@89	2645 return d3_time_formatPad(d3_time.sundayOfYear(d), p, 2);
paulo@89	2646 },
paulo@89	2647 w: function(d) {
paulo@89	2648 return d.getDay();
paulo@89	2649 },
paulo@89	2650 W: function(d, p) {
paulo@89	2651 return d3_time_formatPad(d3_time.mondayOfYear(d), p, 2);
paulo@89	2652 },
paulo@89	2653 x: d3_time_format(locale_date),
paulo@89	2654 X: d3_time_format(locale_time),
paulo@89	2655 y: function(d, p) {
paulo@89	2656 return d3_time_formatPad(d.getFullYear() % 100, p, 2);
paulo@89	2657 },
paulo@89	2658 Y: function(d, p) {
paulo@89	2659 return d3_time_formatPad(d.getFullYear() % 1e4, p, 4);
paulo@89	2660 },
paulo@89	2661 Z: d3_time_zone,
paulo@89	2662 "%": function() {
paulo@89	2663 return "%";
paulo@89	2664 }
paulo@89	2665 };
paulo@89	2666 var d3_time_parsers = {
paulo@89	2667 a: d3_time_parseWeekdayAbbrev,
paulo@89	2668 A: d3_time_parseWeekday,
paulo@89	2669 b: d3_time_parseMonthAbbrev,
paulo@89	2670 B: d3_time_parseMonth,
paulo@89	2671 c: d3_time_parseLocaleFull,
paulo@89	2672 d: d3_time_parseDay,
paulo@89	2673 e: d3_time_parseDay,
paulo@89	2674 H: d3_time_parseHour24,
paulo@89	2675 I: d3_time_parseHour24,
paulo@89	2676 j: d3_time_parseDayOfYear,
paulo@89	2677 L: d3_time_parseMilliseconds,
paulo@89	2678 m: d3_time_parseMonthNumber,
paulo@89	2679 M: d3_time_parseMinutes,
paulo@89	2680 p: d3_time_parseAmPm,
paulo@89	2681 S: d3_time_parseSeconds,
paulo@89	2682 U: d3_time_parseWeekNumberSunday,
paulo@89	2683 w: d3_time_parseWeekdayNumber,
paulo@89	2684 W: d3_time_parseWeekNumberMonday,
paulo@89	2685 x: d3_time_parseLocaleDate,
paulo@89	2686 X: d3_time_parseLocaleTime,
paulo@89	2687 y: d3_time_parseYear,
paulo@89	2688 Y: d3_time_parseFullYear,
paulo@89	2689 Z: d3_time_parseZone,
paulo@89	2690 "%": d3_time_parseLiteralPercent
paulo@89	2691 };
paulo@89	2692 function d3_time_parseWeekdayAbbrev(date, string, i) {
paulo@89	2693 d3_time_dayAbbrevRe.lastIndex = 0;
paulo@89	2694 var n = d3_time_dayAbbrevRe.exec(string.slice(i));
paulo@89	2695 return n ? (date.w = d3_time_dayAbbrevLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
paulo@89	2696 }
paulo@89	2697 function d3_time_parseWeekday(date, string, i) {
paulo@89	2698 d3_time_dayRe.lastIndex = 0;
paulo@89	2699 var n = d3_time_dayRe.exec(string.slice(i));
paulo@89	2700 return n ? (date.w = d3_time_dayLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
paulo@89	2701 }
paulo@89	2702 function d3_time_parseMonthAbbrev(date, string, i) {
paulo@89	2703 d3_time_monthAbbrevRe.lastIndex = 0;
paulo@89	2704 var n = d3_time_monthAbbrevRe.exec(string.slice(i));
paulo@89	2705 return n ? (date.m = d3_time_monthAbbrevLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
paulo@89	2706 }
paulo@89	2707 function d3_time_parseMonth(date, string, i) {
paulo@89	2708 d3_time_monthRe.lastIndex = 0;
paulo@89	2709 var n = d3_time_monthRe.exec(string.slice(i));
paulo@89	2710 return n ? (date.m = d3_time_monthLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
paulo@89	2711 }
paulo@89	2712 function d3_time_parseLocaleFull(date, string, i) {
paulo@89	2713 return d3_time_parse(date, d3_time_formats.c.toString(), string, i);
paulo@89	2714 }
paulo@89	2715 function d3_time_parseLocaleDate(date, string, i) {
paulo@89	2716 return d3_time_parse(date, d3_time_formats.x.toString(), string, i);
paulo@89	2717 }
paulo@89	2718 function d3_time_parseLocaleTime(date, string, i) {
paulo@89	2719 return d3_time_parse(date, d3_time_formats.X.toString(), string, i);
paulo@89	2720 }
paulo@89	2721 function d3_time_parseAmPm(date, string, i) {
paulo@89	2722 var n = d3_time_periodLookup.get(string.slice(i, i += 2).toLowerCase());
paulo@89	2723 return n == null ? -1 : (date.p = n, i);
paulo@89	2724 }
paulo@89	2725 return d3_time_format;
paulo@89	2726 }
paulo@89	2727 var d3_time_formatPads = {
paulo@89	2728 "-": "",
paulo@89	2729 _: " ",
paulo@89	2730 "0": "0"
paulo@89	2731 }, d3_time_numberRe = /^\s*\d+/, d3_time_percentRe = /^%/;
paulo@89	2732 function d3_time_formatPad(value, fill, width) {
paulo@89	2733 var sign = value < 0 ? "-" : "", string = (sign ? -value : value) + "", length = string.length;
paulo@89	2734 return sign + (length < width ? new Array(width - length + 1).join(fill) + string : string);
paulo@89	2735 }
paulo@89	2736 function d3_time_formatRe(names) {
paulo@89	2737 return new RegExp("^(?:" + names.map(d3.requote).join("\|") + ")", "i");
paulo@89	2738 }
paulo@89	2739 function d3_time_formatLookup(names) {
paulo@89	2740 var map = new d3_Map(), i = -1, n = names.length;
paulo@89	2741 while (++i < n) map.set(names[i].toLowerCase(), i);
paulo@89	2742 return map;
paulo@89	2743 }
paulo@89	2744 function d3_time_parseWeekdayNumber(date, string, i) {
paulo@89	2745 d3_time_numberRe.lastIndex = 0;
paulo@89	2746 var n = d3_time_numberRe.exec(string.slice(i, i + 1));
paulo@89	2747 return n ? (date.w = +n[0], i + n[0].length) : -1;
paulo@89	2748 }
paulo@89	2749 function d3_time_parseWeekNumberSunday(date, string, i) {
paulo@89	2750 d3_time_numberRe.lastIndex = 0;
paulo@89	2751 var n = d3_time_numberRe.exec(string.slice(i));
paulo@89	2752 return n ? (date.U = +n[0], i + n[0].length) : -1;
paulo@89	2753 }
paulo@89	2754 function d3_time_parseWeekNumberMonday(date, string, i) {
paulo@89	2755 d3_time_numberRe.lastIndex = 0;
paulo@89	2756 var n = d3_time_numberRe.exec(string.slice(i));
paulo@89	2757 return n ? (date.W = +n[0], i + n[0].length) : -1;
paulo@89	2758 }
paulo@89	2759 function d3_time_parseFullYear(date, string, i) {
paulo@89	2760 d3_time_numberRe.lastIndex = 0;
paulo@89	2761 var n = d3_time_numberRe.exec(string.slice(i, i + 4));
paulo@89	2762 return n ? (date.y = +n[0], i + n[0].length) : -1;
paulo@89	2763 }
paulo@89	2764 function d3_time_parseYear(date, string, i) {
paulo@89	2765 d3_time_numberRe.lastIndex = 0;
paulo@89	2766 var n = d3_time_numberRe.exec(string.slice(i, i + 2));
paulo@89	2767 return n ? (date.y = d3_time_expandYear(+n[0]), i + n[0].length) : -1;
paulo@89	2768 }
paulo@89	2769 function d3_time_parseZone(date, string, i) {
paulo@89	2770 return /^[+-]\d{4}$/.test(string = string.slice(i, i + 5)) ? (date.Z = -string,
paulo@89	2771 i + 5) : -1;
paulo@89	2772 }
paulo@89	2773 function d3_time_expandYear(d) {
paulo@89	2774 return d + (d > 68 ? 1900 : 2e3);
paulo@89	2775 }
paulo@89	2776 function d3_time_parseMonthNumber(date, string, i) {
paulo@89	2777 d3_time_numberRe.lastIndex = 0;
paulo@89	2778 var n = d3_time_numberRe.exec(string.slice(i, i + 2));
paulo@89	2779 return n ? (date.m = n[0] - 1, i + n[0].length) : -1;
paulo@89	2780 }
paulo@89	2781 function d3_time_parseDay(date, string, i) {
paulo@89	2782 d3_time_numberRe.lastIndex = 0;
paulo@89	2783 var n = d3_time_numberRe.exec(string.slice(i, i + 2));
paulo@89	2784 return n ? (date.d = +n[0], i + n[0].length) : -1;
paulo@89	2785 }
paulo@89	2786 function d3_time_parseDayOfYear(date, string, i) {
paulo@89	2787 d3_time_numberRe.lastIndex = 0;
paulo@89	2788 var n = d3_time_numberRe.exec(string.slice(i, i + 3));
paulo@89	2789 return n ? (date.j = +n[0], i + n[0].length) : -1;
paulo@89	2790 }
paulo@89	2791 function d3_time_parseHour24(date, string, i) {
paulo@89	2792 d3_time_numberRe.lastIndex = 0;
paulo@89	2793 var n = d3_time_numberRe.exec(string.slice(i, i + 2));
paulo@89	2794 return n ? (date.H = +n[0], i + n[0].length) : -1;
paulo@89	2795 }
paulo@89	2796 function d3_time_parseMinutes(date, string, i) {
paulo@89	2797 d3_time_numberRe.lastIndex = 0;
paulo@89	2798 var n = d3_time_numberRe.exec(string.slice(i, i + 2));
paulo@89	2799 return n ? (date.M = +n[0], i + n[0].length) : -1;
paulo@89	2800 }
paulo@89	2801 function d3_time_parseSeconds(date, string, i) {
paulo@89	2802 d3_time_numberRe.lastIndex = 0;
paulo@89	2803 var n = d3_time_numberRe.exec(string.slice(i, i + 2));
paulo@89	2804 return n ? (date.S = +n[0], i + n[0].length) : -1;
paulo@89	2805 }
paulo@89	2806 function d3_time_parseMilliseconds(date, string, i) {
paulo@89	2807 d3_time_numberRe.lastIndex = 0;
paulo@89	2808 var n = d3_time_numberRe.exec(string.slice(i, i + 3));
paulo@89	2809 return n ? (date.L = +n[0], i + n[0].length) : -1;
paulo@89	2810 }
paulo@89	2811 function d3_time_zone(d) {
paulo@89	2812 var z = d.getTimezoneOffset(), zs = z > 0 ? "-" : "+", zh = abs(z) / 60 \| 0, zm = abs(z) % 60;
paulo@89	2813 return zs + d3_time_formatPad(zh, "0", 2) + d3_time_formatPad(zm, "0", 2);
paulo@89	2814 }
paulo@89	2815 function d3_time_parseLiteralPercent(date, string, i) {
paulo@89	2816 d3_time_percentRe.lastIndex = 0;
paulo@89	2817 var n = d3_time_percentRe.exec(string.slice(i, i + 1));
paulo@89	2818 return n ? i + n[0].length : -1;
paulo@89	2819 }
paulo@89	2820 function d3_time_formatMulti(formats) {
paulo@89	2821 var n = formats.length, i = -1;
paulo@89	2822 while (++i < n) formats[i][0] = this(formats[i][0]);
paulo@89	2823 return function(date) {
paulo@89	2824 var i = 0, f = formats[i];
paulo@89	2825 while (!f[1](date)) f = formats[++i];
paulo@89	2826 return f[0](date);
paulo@89	2827 };
paulo@89	2828 }
paulo@89	2829 d3.locale = function(locale) {
paulo@89	2830 return {
paulo@89	2831 numberFormat: d3_locale_numberFormat(locale),
paulo@89	2832 timeFormat: d3_locale_timeFormat(locale)
paulo@89	2833 };
paulo@89	2834 };
paulo@89	2835 var d3_locale_enUS = d3.locale({
paulo@89	2836 decimal: ".",
paulo@89	2837 thousands: ",",
paulo@89	2838 grouping: [ 3 ],
paulo@89	2839 currency: [ "$", "" ],
paulo@89	2840 dateTime: "%a %b %e %X %Y",
paulo@89	2841 date: "%m/%d/%Y",
paulo@89	2842 time: "%H:%M:%S",
paulo@89	2843 periods: [ "AM", "PM" ],
paulo@89	2844 days: [ "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday" ],
paulo@89	2845 shortDays: [ "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" ],
paulo@89	2846 months: [ "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December" ],
paulo@89	2847 shortMonths: [ "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" ]
paulo@89	2848 });
paulo@89	2849 d3.format = d3_locale_enUS.numberFormat;
paulo@89	2850 d3.geo = {};
paulo@89	2851 function d3_adder() {}
paulo@89	2852 d3_adder.prototype = {
paulo@89	2853 s: 0,
paulo@89	2854 t: 0,
paulo@89	2855 add: function(y) {
paulo@89	2856 d3_adderSum(y, this.t, d3_adderTemp);
paulo@89	2857 d3_adderSum(d3_adderTemp.s, this.s, this);
paulo@89	2858 if (this.s) this.t += d3_adderTemp.t; else this.s = d3_adderTemp.t;
paulo@89	2859 },
paulo@89	2860 reset: function() {
paulo@89	2861 this.s = this.t = 0;
paulo@89	2862 },
paulo@89	2863 valueOf: function() {
paulo@89	2864 return this.s;
paulo@89	2865 }
paulo@89	2866 };
paulo@89	2867 var d3_adderTemp = new d3_adder();
paulo@89	2868 function d3_adderSum(a, b, o) {
paulo@89	2869 var x = o.s = a + b, bv = x - a, av = x - bv;
paulo@89	2870 o.t = a - av + (b - bv);
paulo@89	2871 }
paulo@89	2872 d3.geo.stream = function(object, listener) {
paulo@89	2873 if (object && d3_geo_streamObjectType.hasOwnProperty(object.type)) {
paulo@89	2874 d3_geo_streamObjectType[object.type](object, listener);
paulo@89	2875 } else {
paulo@89	2876 d3_geo_streamGeometry(object, listener);
paulo@89	2877 }
paulo@89	2878 };
paulo@89	2879 function d3_geo_streamGeometry(geometry, listener) {
paulo@89	2880 if (geometry && d3_geo_streamGeometryType.hasOwnProperty(geometry.type)) {
paulo@89	2881 d3_geo_streamGeometryType[geometry.type](geometry, listener);
paulo@89	2882 }
paulo@89	2883 }
paulo@89	2884 var d3_geo_streamObjectType = {
paulo@89	2885 Feature: function(feature, listener) {
paulo@89	2886 d3_geo_streamGeometry(feature.geometry, listener);
paulo@89	2887 },
paulo@89	2888 FeatureCollection: function(object, listener) {
paulo@89	2889 var features = object.features, i = -1, n = features.length;
paulo@89	2890 while (++i < n) d3_geo_streamGeometry(features[i].geometry, listener);
paulo@89	2891 }
paulo@89	2892 };
paulo@89	2893 var d3_geo_streamGeometryType = {
paulo@89	2894 Sphere: function(object, listener) {
paulo@89	2895 listener.sphere();
paulo@89	2896 },
paulo@89	2897 Point: function(object, listener) {
paulo@89	2898 object = object.coordinates;
paulo@89	2899 listener.point(object[0], object[1], object[2]);
paulo@89	2900 },
paulo@89	2901 MultiPoint: function(object, listener) {
paulo@89	2902 var coordinates = object.coordinates, i = -1, n = coordinates.length;
paulo@89	2903 while (++i < n) object = coordinates[i], listener.point(object[0], object[1], object[2]);
paulo@89	2904 },
paulo@89	2905 LineString: function(object, listener) {
paulo@89	2906 d3_geo_streamLine(object.coordinates, listener, 0);
paulo@89	2907 },
paulo@89	2908 MultiLineString: function(object, listener) {
paulo@89	2909 var coordinates = object.coordinates, i = -1, n = coordinates.length;
paulo@89	2910 while (++i < n) d3_geo_streamLine(coordinates[i], listener, 0);
paulo@89	2911 },
paulo@89	2912 Polygon: function(object, listener) {
paulo@89	2913 d3_geo_streamPolygon(object.coordinates, listener);
paulo@89	2914 },
paulo@89	2915 MultiPolygon: function(object, listener) {
paulo@89	2916 var coordinates = object.coordinates, i = -1, n = coordinates.length;
paulo@89	2917 while (++i < n) d3_geo_streamPolygon(coordinates[i], listener);
paulo@89	2918 },
paulo@89	2919 GeometryCollection: function(object, listener) {
paulo@89	2920 var geometries = object.geometries, i = -1, n = geometries.length;
paulo@89	2921 while (++i < n) d3_geo_streamGeometry(geometries[i], listener);
paulo@89	2922 }
paulo@89	2923 };
paulo@89	2924 function d3_geo_streamLine(coordinates, listener, closed) {
paulo@89	2925 var i = -1, n = coordinates.length - closed, coordinate;
paulo@89	2926 listener.lineStart();
paulo@89	2927 while (++i < n) coordinate = coordinates[i], listener.point(coordinate[0], coordinate[1], coordinate[2]);
paulo@89	2928 listener.lineEnd();
paulo@89	2929 }
paulo@89	2930 function d3_geo_streamPolygon(coordinates, listener) {
paulo@89	2931 var i = -1, n = coordinates.length;
paulo@89	2932 listener.polygonStart();
paulo@89	2933 while (++i < n) d3_geo_streamLine(coordinates[i], listener, 1);
paulo@89	2934 listener.polygonEnd();
paulo@89	2935 }
paulo@89	2936 d3.geo.area = function(object) {
paulo@89	2937 d3_geo_areaSum = 0;
paulo@89	2938 d3.geo.stream(object, d3_geo_area);
paulo@89	2939 return d3_geo_areaSum;
paulo@89	2940 };
paulo@89	2941 var d3_geo_areaSum, d3_geo_areaRingSum = new d3_adder();
paulo@89	2942 var d3_geo_area = {
paulo@89	2943 sphere: function() {
paulo@89	2944 d3_geo_areaSum += 4 * π;
paulo@89	2945 },
paulo@89	2946 point: d3_noop,
paulo@89	2947 lineStart: d3_noop,
paulo@89	2948 lineEnd: d3_noop,
paulo@89	2949 polygonStart: function() {
paulo@89	2950 d3_geo_areaRingSum.reset();
paulo@89	2951 d3_geo_area.lineStart = d3_geo_areaRingStart;
paulo@89	2952 },
paulo@89	2953 polygonEnd: function() {
paulo@89	2954 var area = 2 * d3_geo_areaRingSum;
paulo@89	2955 d3_geo_areaSum += area < 0 ? 4 * π + area : area;
paulo@89	2956 d3_geo_area.lineStart = d3_geo_area.lineEnd = d3_geo_area.point = d3_noop;
paulo@89	2957 }
paulo@89	2958 };
paulo@89	2959 function d3_geo_areaRingStart() {
paulo@89	2960 var λ00, φ00, λ0, cosφ0, sinφ0;
paulo@89	2961 d3_geo_area.point = function(λ, φ) {
paulo@89	2962 d3_geo_area.point = nextPoint;
paulo@89	2963 λ0 = (λ00 = λ) * d3_radians, cosφ0 = Math.cos(φ = (φ00 = φ) * d3_radians / 2 + π / 4),
paulo@89	2964 sinφ0 = Math.sin(φ);
paulo@89	2965 };
paulo@89	2966 function nextPoint(λ, φ) {
paulo@89	2967 λ *= d3_radians;
paulo@89	2968 φ = φ * d3_radians / 2 + π / 4;
paulo@89	2969 var dλ = λ - λ0, sdλ = dλ >= 0 ? 1 : -1, adλ = sdλ * dλ, cosφ = Math.cos(φ), sinφ = Math.sin(φ), k = sinφ0 * sinφ, u = cosφ0 * cosφ + k * Math.cos(adλ), v = k * sdλ * Math.sin(adλ);
paulo@89	2970 d3_geo_areaRingSum.add(Math.atan2(v, u));
paulo@89	2971 λ0 = λ, cosφ0 = cosφ, sinφ0 = sinφ;
paulo@89	2972 }
paulo@89	2973 d3_geo_area.lineEnd = function() {
paulo@89	2974 nextPoint(λ00, φ00);
paulo@89	2975 };
paulo@89	2976 }
paulo@89	2977 function d3_geo_cartesian(spherical) {
paulo@89	2978 var λ = spherical[0], φ = spherical[1], cosφ = Math.cos(φ);
paulo@89	2979 return [ cosφ * Math.cos(λ), cosφ * Math.sin(λ), Math.sin(φ) ];
paulo@89	2980 }
paulo@89	2981 function d3_geo_cartesianDot(a, b) {
paulo@89	2982 return a[0] * b[0] + a[1] * b[1] + a[2] * b[2];
paulo@89	2983 }
paulo@89	2984 function d3_geo_cartesianCross(a, b) {
paulo@89	2985 return [ a[1] * b[2] - a[2] * b[1], a[2] * b[0] - a[0] * b[2], a[0] * b[1] - a[1] * b[0] ];
paulo@89	2986 }
paulo@89	2987 function d3_geo_cartesianAdd(a, b) {
paulo@89	2988 a[0] += b[0];
paulo@89	2989 a[1] += b[1];
paulo@89	2990 a[2] += b[2];
paulo@89	2991 }
paulo@89	2992 function d3_geo_cartesianScale(vector, k) {
paulo@89	2993 return [ vector[0] * k, vector[1] * k, vector[2] * k ];
paulo@89	2994 }
paulo@89	2995 function d3_geo_cartesianNormalize(d) {
paulo@89	2996 var l = Math.sqrt(d[0] * d[0] + d[1] * d[1] + d[2] * d[2]);
paulo@89	2997 d[0] /= l;
paulo@89	2998 d[1] /= l;
paulo@89	2999 d[2] /= l;
paulo@89	3000 }
paulo@89	3001 function d3_geo_spherical(cartesian) {
paulo@89	3002 return [ Math.atan2(cartesian[1], cartesian[0]), d3_asin(cartesian[2]) ];
paulo@89	3003 }
paulo@89	3004 function d3_geo_sphericalEqual(a, b) {
paulo@89	3005 return abs(a[0] - b[0]) < ε && abs(a[1] - b[1]) < ε;
paulo@89	3006 }
paulo@89	3007 d3.geo.bounds = function() {
paulo@89	3008 var λ0, φ0, λ1, φ1, λ_, λ__, φ__, p0, dλSum, ranges, range;
paulo@89	3009 var bound = {
paulo@89	3010 point: point,
paulo@89	3011 lineStart: lineStart,
paulo@89	3012 lineEnd: lineEnd,
paulo@89	3013 polygonStart: function() {
paulo@89	3014 bound.point = ringPoint;
paulo@89	3015 bound.lineStart = ringStart;
paulo@89	3016 bound.lineEnd = ringEnd;
paulo@89	3017 dλSum = 0;
paulo@89	3018 d3_geo_area.polygonStart();
paulo@89	3019 },
paulo@89	3020 polygonEnd: function() {
paulo@89	3021 d3_geo_area.polygonEnd();
paulo@89	3022 bound.point = point;
paulo@89	3023 bound.lineStart = lineStart;
paulo@89	3024 bound.lineEnd = lineEnd;
paulo@89	3025 if (d3_geo_areaRingSum < 0) λ0 = -(λ1 = 180), φ0 = -(φ1 = 90); else if (dλSum > ε) φ1 = 90; else if (dλSum < -ε) φ0 = -90;
paulo@89	3026 range[0] = λ0, range[1] = λ1;
paulo@89	3027 }
paulo@89	3028 };
paulo@89	3029 function point(λ, φ) {
paulo@89	3030 ranges.push(range = [ λ0 = λ, λ1 = λ ]);
paulo@89	3031 if (φ < φ0) φ0 = φ;
paulo@89	3032 if (φ > φ1) φ1 = φ;
paulo@89	3033 }
paulo@89	3034 function linePoint(λ, φ) {
paulo@89	3035 var p = d3_geo_cartesian([ λ * d3_radians, φ * d3_radians ]);
paulo@89	3036 if (p0) {
paulo@89	3037 var normal = d3_geo_cartesianCross(p0, p), equatorial = [ normal[1], -normal[0], 0 ], inflection = d3_geo_cartesianCross(equatorial, normal);
paulo@89	3038 d3_geo_cartesianNormalize(inflection);
paulo@89	3039 inflection = d3_geo_spherical(inflection);
paulo@89	3040 var dλ = λ - λ_, s = dλ > 0 ? 1 : -1, λi = inflection[0] * d3_degrees * s, antimeridian = abs(dλ) > 180;
paulo@89	3041 if (antimeridian ^ (s * λ_ < λi && λi < s * λ)) {
paulo@89	3042 var φi = inflection[1] * d3_degrees;
paulo@89	3043 if (φi > φ1) φ1 = φi;
paulo@89	3044 } else if (λi = (λi + 360) % 360 - 180, antimeridian ^ (s * λ_ < λi && λi < s * λ)) {
paulo@89	3045 var φi = -inflection[1] * d3_degrees;
paulo@89	3046 if (φi < φ0) φ0 = φi;
paulo@89	3047 } else {
paulo@89	3048 if (φ < φ0) φ0 = φ;
paulo@89	3049 if (φ > φ1) φ1 = φ;
paulo@89	3050 }
paulo@89	3051 if (antimeridian) {
paulo@89	3052 if (λ < λ_) {
paulo@89	3053 if (angle(λ0, λ) > angle(λ0, λ1)) λ1 = λ;
paulo@89	3054 } else {
paulo@89	3055 if (angle(λ, λ1) > angle(λ0, λ1)) λ0 = λ;
paulo@89	3056 }
paulo@89	3057 } else {
paulo@89	3058 if (λ1 >= λ0) {
paulo@89	3059 if (λ < λ0) λ0 = λ;
paulo@89	3060 if (λ > λ1) λ1 = λ;
paulo@89	3061 } else {
paulo@89	3062 if (λ > λ_) {
paulo@89	3063 if (angle(λ0, λ) > angle(λ0, λ1)) λ1 = λ;
paulo@89	3064 } else {
paulo@89	3065 if (angle(λ, λ1) > angle(λ0, λ1)) λ0 = λ;
paulo@89	3066 }
paulo@89	3067 }
paulo@89	3068 }
paulo@89	3069 } else {
paulo@89	3070 point(λ, φ);
paulo@89	3071 }
paulo@89	3072 p0 = p, λ_ = λ;
paulo@89	3073 }
paulo@89	3074 function lineStart() {
paulo@89	3075 bound.point = linePoint;
paulo@89	3076 }
paulo@89	3077 function lineEnd() {
paulo@89	3078 range[0] = λ0, range[1] = λ1;
paulo@89	3079 bound.point = point;
paulo@89	3080 p0 = null;
paulo@89	3081 }
paulo@89	3082 function ringPoint(λ, φ) {
paulo@89	3083 if (p0) {
paulo@89	3084 var dλ = λ - λ_;
paulo@89	3085 dλSum += abs(dλ) > 180 ? dλ + (dλ > 0 ? 360 : -360) : dλ;
paulo@89	3086 } else λ__ = λ, φ__ = φ;
paulo@89	3087 d3_geo_area.point(λ, φ);
paulo@89	3088 linePoint(λ, φ);
paulo@89	3089 }
paulo@89	3090 function ringStart() {
paulo@89	3091 d3_geo_area.lineStart();
paulo@89	3092 }
paulo@89	3093 function ringEnd() {
paulo@89	3094 ringPoint(λ__, φ__);
paulo@89	3095 d3_geo_area.lineEnd();
paulo@89	3096 if (abs(dλSum) > ε) λ0 = -(λ1 = 180);
paulo@89	3097 range[0] = λ0, range[1] = λ1;
paulo@89	3098 p0 = null;
paulo@89	3099 }
paulo@89	3100 function angle(λ0, λ1) {
paulo@89	3101 return (λ1 -= λ0) < 0 ? λ1 + 360 : λ1;
paulo@89	3102 }
paulo@89	3103 function compareRanges(a, b) {
paulo@89	3104 return a[0] - b[0];
paulo@89	3105 }
paulo@89	3106 function withinRange(x, range) {
paulo@89	3107 return range[0] <= range[1] ? range[0] <= x && x <= range[1] : x < range[0] \|\| range[1] < x;
paulo@89	3108 }
paulo@89	3109 return function(feature) {
paulo@89	3110 φ1 = λ1 = -(λ0 = φ0 = Infinity);
paulo@89	3111 ranges = [];
paulo@89	3112 d3.geo.stream(feature, bound);
paulo@89	3113 var n = ranges.length;
paulo@89	3114 if (n) {
paulo@89	3115 ranges.sort(compareRanges);
paulo@89	3116 for (var i = 1, a = ranges[0], b, merged = [ a ]; i < n; ++i) {
paulo@89	3117 b = ranges[i];
paulo@89	3118 if (withinRange(b[0], a) \|\| withinRange(b[1], a)) {
paulo@89	3119 if (angle(a[0], b[1]) > angle(a[0], a[1])) a[1] = b[1];
paulo@89	3120 if (angle(b[0], a[1]) > angle(a[0], a[1])) a[0] = b[0];
paulo@89	3121 } else {
paulo@89	3122 merged.push(a = b);
paulo@89	3123 }
paulo@89	3124 }
paulo@89	3125 var best = -Infinity, dλ;
paulo@89	3126 for (var n = merged.length - 1, i = 0, a = merged[n], b; i <= n; a = b, ++i) {
paulo@89	3127 b = merged[i];
paulo@89	3128 if ((dλ = angle(a[1], b[0])) > best) best = dλ, λ0 = b[0], λ1 = a[1];
paulo@89	3129 }
paulo@89	3130 }
paulo@89	3131 ranges = range = null;
paulo@89	3132 return λ0 === Infinity \|\| φ0 === Infinity ? [ [ NaN, NaN ], [ NaN, NaN ] ] : [ [ λ0, φ0 ], [ λ1, φ1 ] ];
paulo@89	3133 };
paulo@89	3134 }();
paulo@89	3135 d3.geo.centroid = function(object) {
paulo@89	3136 d3_geo_centroidW0 = d3_geo_centroidW1 = d3_geo_centroidX0 = d3_geo_centroidY0 = d3_geo_centroidZ0 = d3_geo_centroidX1 = d3_geo_centroidY1 = d3_geo_centroidZ1 = d3_geo_centroidX2 = d3_geo_centroidY2 = d3_geo_centroidZ2 = 0;
paulo@89	3137 d3.geo.stream(object, d3_geo_centroid);
paulo@89	3138 var x = d3_geo_centroidX2, y = d3_geo_centroidY2, z = d3_geo_centroidZ2, m = x * x + y * y + z * z;
paulo@89	3139 if (m < ε2) {
paulo@89	3140 x = d3_geo_centroidX1, y = d3_geo_centroidY1, z = d3_geo_centroidZ1;
paulo@89	3141 if (d3_geo_centroidW1 < ε) x = d3_geo_centroidX0, y = d3_geo_centroidY0, z = d3_geo_centroidZ0;
paulo@89	3142 m = x * x + y * y + z * z;
paulo@89	3143 if (m < ε2) return [ NaN, NaN ];
paulo@89	3144 }
paulo@89	3145 return [ Math.atan2(y, x) * d3_degrees, d3_asin(z / Math.sqrt(m)) * d3_degrees ];
paulo@89	3146 };
paulo@89	3147 var d3_geo_centroidW0, d3_geo_centroidW1, d3_geo_centroidX0, d3_geo_centroidY0, d3_geo_centroidZ0, d3_geo_centroidX1, d3_geo_centroidY1, d3_geo_centroidZ1, d3_geo_centroidX2, d3_geo_centroidY2, d3_geo_centroidZ2;
paulo@89	3148 var d3_geo_centroid = {
paulo@89	3149 sphere: d3_noop,
paulo@89	3150 point: d3_geo_centroidPoint,
paulo@89	3151 lineStart: d3_geo_centroidLineStart,
paulo@89	3152 lineEnd: d3_geo_centroidLineEnd,
paulo@89	3153 polygonStart: function() {
paulo@89	3154 d3_geo_centroid.lineStart = d3_geo_centroidRingStart;
paulo@89	3155 },
paulo@89	3156 polygonEnd: function() {
paulo@89	3157 d3_geo_centroid.lineStart = d3_geo_centroidLineStart;
paulo@89	3158 }
paulo@89	3159 };
paulo@89	3160 function d3_geo_centroidPoint(λ, φ) {
paulo@89	3161 λ *= d3_radians;
paulo@89	3162 var cosφ = Math.cos(φ *= d3_radians);
paulo@89	3163 d3_geo_centroidPointXYZ(cosφ * Math.cos(λ), cosφ * Math.sin(λ), Math.sin(φ));
paulo@89	3164 }
paulo@89	3165 function d3_geo_centroidPointXYZ(x, y, z) {
paulo@89	3166 ++d3_geo_centroidW0;
paulo@89	3167 d3_geo_centroidX0 += (x - d3_geo_centroidX0) / d3_geo_centroidW0;
paulo@89	3168 d3_geo_centroidY0 += (y - d3_geo_centroidY0) / d3_geo_centroidW0;
paulo@89	3169 d3_geo_centroidZ0 += (z - d3_geo_centroidZ0) / d3_geo_centroidW0;
paulo@89	3170 }
paulo@89	3171 function d3_geo_centroidLineStart() {
paulo@89	3172 var x0, y0, z0;
paulo@89	3173 d3_geo_centroid.point = function(λ, φ) {
paulo@89	3174 λ *= d3_radians;
paulo@89	3175 var cosφ = Math.cos(φ *= d3_radians);
paulo@89	3176 x0 = cosφ * Math.cos(λ);
paulo@89	3177 y0 = cosφ * Math.sin(λ);
paulo@89	3178 z0 = Math.sin(φ);
paulo@89	3179 d3_geo_centroid.point = nextPoint;
paulo@89	3180 d3_geo_centroidPointXYZ(x0, y0, z0);
paulo@89	3181 };
paulo@89	3182 function nextPoint(λ, φ) {
paulo@89	3183 λ *= d3_radians;
paulo@89	3184 var cosφ = Math.cos(φ = d3_radians), x = cosφ Math.cos(λ), y = cosφ * Math.sin(λ), z = Math.sin(φ), w = Math.atan2(Math.sqrt((w = y0 * z - z0 * y) * w + (w = z0 * x - x0 * z) * w + (w = x0 * y - y0 * x) * w), x0 * x + y0 * y + z0 * z);
paulo@89	3185 d3_geo_centroidW1 += w;
paulo@89	3186 d3_geo_centroidX1 += w * (x0 + (x0 = x));
paulo@89	3187 d3_geo_centroidY1 += w * (y0 + (y0 = y));
paulo@89	3188 d3_geo_centroidZ1 += w * (z0 + (z0 = z));
paulo@89	3189 d3_geo_centroidPointXYZ(x0, y0, z0);
paulo@89	3190 }
paulo@89	3191 }
paulo@89	3192 function d3_geo_centroidLineEnd() {
paulo@89	3193 d3_geo_centroid.point = d3_geo_centroidPoint;
paulo@89	3194 }
paulo@89	3195 function d3_geo_centroidRingStart() {
paulo@89	3196 var λ00, φ00, x0, y0, z0;
paulo@89	3197 d3_geo_centroid.point = function(λ, φ) {
paulo@89	3198 λ00 = λ, φ00 = φ;
paulo@89	3199 d3_geo_centroid.point = nextPoint;
paulo@89	3200 λ *= d3_radians;
paulo@89	3201 var cosφ = Math.cos(φ *= d3_radians);
paulo@89	3202 x0 = cosφ * Math.cos(λ);
paulo@89	3203 y0 = cosφ * Math.sin(λ);
paulo@89	3204 z0 = Math.sin(φ);
paulo@89	3205 d3_geo_centroidPointXYZ(x0, y0, z0);
paulo@89	3206 };
paulo@89	3207 d3_geo_centroid.lineEnd = function() {
paulo@89	3208 nextPoint(λ00, φ00);
paulo@89	3209 d3_geo_centroid.lineEnd = d3_geo_centroidLineEnd;
paulo@89	3210 d3_geo_centroid.point = d3_geo_centroidPoint;
paulo@89	3211 };
paulo@89	3212 function nextPoint(λ, φ) {
paulo@89	3213 λ *= d3_radians;
paulo@89	3214 var cosφ = Math.cos(φ = d3_radians), x = cosφ Math.cos(λ), y = cosφ * Math.sin(λ), z = Math.sin(φ), cx = y0 * z - z0 * y, cy = z0 * x - x0 * z, cz = x0 * y - y0 * x, m = Math.sqrt(cx * cx + cy * cy + cz * cz), u = x0 * x + y0 * y + z0 * z, v = m && -d3_acos(u) / m, w = Math.atan2(m, u);
paulo@89	3215 d3_geo_centroidX2 += v * cx;
paulo@89	3216 d3_geo_centroidY2 += v * cy;
paulo@89	3217 d3_geo_centroidZ2 += v * cz;
paulo@89	3218 d3_geo_centroidW1 += w;
paulo@89	3219 d3_geo_centroidX1 += w * (x0 + (x0 = x));
paulo@89	3220 d3_geo_centroidY1 += w * (y0 + (y0 = y));
paulo@89	3221 d3_geo_centroidZ1 += w * (z0 + (z0 = z));
paulo@89	3222 d3_geo_centroidPointXYZ(x0, y0, z0);
paulo@89	3223 }
paulo@89	3224 }
paulo@89	3225 function d3_geo_compose(a, b) {
paulo@89	3226 function compose(x, y) {
paulo@89	3227 return x = a(x, y), b(x[0], x[1]);
paulo@89	3228 }
paulo@89	3229 if (a.invert && b.invert) compose.invert = function(x, y) {
paulo@89	3230 return x = b.invert(x, y), x && a.invert(x[0], x[1]);
paulo@89	3231 };
paulo@89	3232 return compose;
paulo@89	3233 }
paulo@89	3234 function d3_true() {
paulo@89	3235 return true;
paulo@89	3236 }
paulo@89	3237 function d3_geo_clipPolygon(segments, compare, clipStartInside, interpolate, listener) {
paulo@89	3238 var subject = [], clip = [];
paulo@89	3239 segments.forEach(function(segment) {
paulo@89	3240 if ((n = segment.length - 1) <= 0) return;
paulo@89	3241 var n, p0 = segment[0], p1 = segment[n];
paulo@89	3242 if (d3_geo_sphericalEqual(p0, p1)) {
paulo@89	3243 listener.lineStart();
paulo@89	3244 for (var i = 0; i < n; ++i) listener.point((p0 = segment[i])[0], p0[1]);
paulo@89	3245 listener.lineEnd();
paulo@89	3246 return;
paulo@89	3247 }
paulo@89	3248 var a = new d3_geo_clipPolygonIntersection(p0, segment, null, true), b = new d3_geo_clipPolygonIntersection(p0, null, a, false);
paulo@89	3249 a.o = b;
paulo@89	3250 subject.push(a);
paulo@89	3251 clip.push(b);
paulo@89	3252 a = new d3_geo_clipPolygonIntersection(p1, segment, null, false);
paulo@89	3253 b = new d3_geo_clipPolygonIntersection(p1, null, a, true);
paulo@89	3254 a.o = b;
paulo@89	3255 subject.push(a);
paulo@89	3256 clip.push(b);
paulo@89	3257 });
paulo@89	3258 clip.sort(compare);
paulo@89	3259 d3_geo_clipPolygonLinkCircular(subject);
paulo@89	3260 d3_geo_clipPolygonLinkCircular(clip);
paulo@89	3261 if (!subject.length) return;
paulo@89	3262 for (var i = 0, entry = clipStartInside, n = clip.length; i < n; ++i) {
paulo@89	3263 clip[i].e = entry = !entry;
paulo@89	3264 }
paulo@89	3265 var start = subject[0], points, point;
paulo@89	3266 while (1) {
paulo@89	3267 var current = start, isSubject = true;
paulo@89	3268 while (current.v) if ((current = current.n) === start) return;
paulo@89	3269 points = current.z;
paulo@89	3270 listener.lineStart();
paulo@89	3271 do {
paulo@89	3272 current.v = current.o.v = true;
paulo@89	3273 if (current.e) {
paulo@89	3274 if (isSubject) {
paulo@89	3275 for (var i = 0, n = points.length; i < n; ++i) listener.point((point = points[i])[0], point[1]);
paulo@89	3276 } else {
paulo@89	3277 interpolate(current.x, current.n.x, 1, listener);
paulo@89	3278 }
paulo@89	3279 current = current.n;
paulo@89	3280 } else {
paulo@89	3281 if (isSubject) {
paulo@89	3282 points = current.p.z;
paulo@89	3283 for (var i = points.length - 1; i >= 0; --i) listener.point((point = points[i])[0], point[1]);
paulo@89	3284 } else {
paulo@89	3285 interpolate(current.x, current.p.x, -1, listener);
paulo@89	3286 }
paulo@89	3287 current = current.p;
paulo@89	3288 }
paulo@89	3289 current = current.o;
paulo@89	3290 points = current.z;
paulo@89	3291 isSubject = !isSubject;
paulo@89	3292 } while (!current.v);
paulo@89	3293 listener.lineEnd();
paulo@89	3294 }
paulo@89	3295 }
paulo@89	3296 function d3_geo_clipPolygonLinkCircular(array) {
paulo@89	3297 if (!(n = array.length)) return;
paulo@89	3298 var n, i = 0, a = array[0], b;
paulo@89	3299 while (++i < n) {
paulo@89	3300 a.n = b = array[i];
paulo@89	3301 b.p = a;
paulo@89	3302 a = b;
paulo@89	3303 }
paulo@89	3304 a.n = b = array[0];
paulo@89	3305 b.p = a;
paulo@89	3306 }
paulo@89	3307 function d3_geo_clipPolygonIntersection(point, points, other, entry) {
paulo@89	3308 this.x = point;
paulo@89	3309 this.z = points;
paulo@89	3310 this.o = other;
paulo@89	3311 this.e = entry;
paulo@89	3312 this.v = false;
paulo@89	3313 this.n = this.p = null;
paulo@89	3314 }
paulo@89	3315 function d3_geo_clip(pointVisible, clipLine, interpolate, clipStart) {
paulo@89	3316 return function(rotate, listener) {
paulo@89	3317 var line = clipLine(listener), rotatedClipStart = rotate.invert(clipStart[0], clipStart[1]);
paulo@89	3318 var clip = {
paulo@89	3319 point: point,
paulo@89	3320 lineStart: lineStart,
paulo@89	3321 lineEnd: lineEnd,
paulo@89	3322 polygonStart: function() {
paulo@89	3323 clip.point = pointRing;
paulo@89	3324 clip.lineStart = ringStart;
paulo@89	3325 clip.lineEnd = ringEnd;
paulo@89	3326 segments = [];
paulo@89	3327 polygon = [];
paulo@89	3328 },
paulo@89	3329 polygonEnd: function() {
paulo@89	3330 clip.point = point;
paulo@89	3331 clip.lineStart = lineStart;
paulo@89	3332 clip.lineEnd = lineEnd;
paulo@89	3333 segments = d3.merge(segments);
paulo@89	3334 var clipStartInside = d3_geo_pointInPolygon(rotatedClipStart, polygon);
paulo@89	3335 if (segments.length) {
paulo@89	3336 if (!polygonStarted) listener.polygonStart(), polygonStarted = true;
paulo@89	3337 d3_geo_clipPolygon(segments, d3_geo_clipSort, clipStartInside, interpolate, listener);
paulo@89	3338 } else if (clipStartInside) {
paulo@89	3339 if (!polygonStarted) listener.polygonStart(), polygonStarted = true;
paulo@89	3340 listener.lineStart();
paulo@89	3341 interpolate(null, null, 1, listener);
paulo@89	3342 listener.lineEnd();
paulo@89	3343 }
paulo@89	3344 if (polygonStarted) listener.polygonEnd(), polygonStarted = false;
paulo@89	3345 segments = polygon = null;
paulo@89	3346 },
paulo@89	3347 sphere: function() {
paulo@89	3348 listener.polygonStart();
paulo@89	3349 listener.lineStart();
paulo@89	3350 interpolate(null, null, 1, listener);
paulo@89	3351 listener.lineEnd();
paulo@89	3352 listener.polygonEnd();
paulo@89	3353 }
paulo@89	3354 };
paulo@89	3355 function point(λ, φ) {
paulo@89	3356 var point = rotate(λ, φ);
paulo@89	3357 if (pointVisible(λ = point[0], φ = point[1])) listener.point(λ, φ);
paulo@89	3358 }
paulo@89	3359 function pointLine(λ, φ) {
paulo@89	3360 var point = rotate(λ, φ);
paulo@89	3361 line.point(point[0], point[1]);
paulo@89	3362 }
paulo@89	3363 function lineStart() {
paulo@89	3364 clip.point = pointLine;
paulo@89	3365 line.lineStart();
paulo@89	3366 }
paulo@89	3367 function lineEnd() {
paulo@89	3368 clip.point = point;
paulo@89	3369 line.lineEnd();
paulo@89	3370 }
paulo@89	3371 var segments;
paulo@89	3372 var buffer = d3_geo_clipBufferListener(), ringListener = clipLine(buffer), polygonStarted = false, polygon, ring;
paulo@89	3373 function pointRing(λ, φ) {
paulo@89	3374 ring.push([ λ, φ ]);
paulo@89	3375 var point = rotate(λ, φ);
paulo@89	3376 ringListener.point(point[0], point[1]);
paulo@89	3377 }
paulo@89	3378 function ringStart() {
paulo@89	3379 ringListener.lineStart();
paulo@89	3380 ring = [];
paulo@89	3381 }
paulo@89	3382 function ringEnd() {
paulo@89	3383 pointRing(ring[0][0], ring[0][1]);
paulo@89	3384 ringListener.lineEnd();
paulo@89	3385 var clean = ringListener.clean(), ringSegments = buffer.buffer(), segment, n = ringSegments.length;
paulo@89	3386 ring.pop();
paulo@89	3387 polygon.push(ring);
paulo@89	3388 ring = null;
paulo@89	3389 if (!n) return;
paulo@89	3390 if (clean & 1) {
paulo@89	3391 segment = ringSegments[0];
paulo@89	3392 var n = segment.length - 1, i = -1, point;
paulo@89	3393 if (n > 0) {
paulo@89	3394 if (!polygonStarted) listener.polygonStart(), polygonStarted = true;
paulo@89	3395 listener.lineStart();
paulo@89	3396 while (++i < n) listener.point((point = segment[i])[0], point[1]);
paulo@89	3397 listener.lineEnd();
paulo@89	3398 }
paulo@89	3399 return;
paulo@89	3400 }
paulo@89	3401 if (n > 1 && clean & 2) ringSegments.push(ringSegments.pop().concat(ringSegments.shift()));
paulo@89	3402 segments.push(ringSegments.filter(d3_geo_clipSegmentLength1));
paulo@89	3403 }
paulo@89	3404 return clip;
paulo@89	3405 };
paulo@89	3406 }
paulo@89	3407 function d3_geo_clipSegmentLength1(segment) {
paulo@89	3408 return segment.length > 1;
paulo@89	3409 }
paulo@89	3410 function d3_geo_clipBufferListener() {
paulo@89	3411 var lines = [], line;
paulo@89	3412 return {
paulo@89	3413 lineStart: function() {
paulo@89	3414 lines.push(line = []);
paulo@89	3415 },
paulo@89	3416 point: function(λ, φ) {
paulo@89	3417 line.push([ λ, φ ]);
paulo@89	3418 },
paulo@89	3419 lineEnd: d3_noop,
paulo@89	3420 buffer: function() {
paulo@89	3421 var buffer = lines;
paulo@89	3422 lines = [];
paulo@89	3423 line = null;
paulo@89	3424 return buffer;
paulo@89	3425 },
paulo@89	3426 rejoin: function() {
paulo@89	3427 if (lines.length > 1) lines.push(lines.pop().concat(lines.shift()));
paulo@89	3428 }
paulo@89	3429 };
paulo@89	3430 }
paulo@89	3431 function d3_geo_clipSort(a, b) {
paulo@89	3432 return ((a = a.x)[0] < 0 ? a[1] - halfπ - ε : halfπ - a[1]) - ((b = b.x)[0] < 0 ? b[1] - halfπ - ε : halfπ - b[1]);
paulo@89	3433 }
paulo@89	3434 var d3_geo_clipAntimeridian = d3_geo_clip(d3_true, d3_geo_clipAntimeridianLine, d3_geo_clipAntimeridianInterpolate, [ -π, -π / 2 ]);
paulo@89	3435 function d3_geo_clipAntimeridianLine(listener) {
paulo@89	3436 var λ0 = NaN, φ0 = NaN, sλ0 = NaN, clean;
paulo@89	3437 return {
paulo@89	3438 lineStart: function() {
paulo@89	3439 listener.lineStart();
paulo@89	3440 clean = 1;
paulo@89	3441 },
paulo@89	3442 point: function(λ1, φ1) {
paulo@89	3443 var sλ1 = λ1 > 0 ? π : -π, dλ = abs(λ1 - λ0);
paulo@89	3444 if (abs(dλ - π) < ε) {
paulo@89	3445 listener.point(λ0, φ0 = (φ0 + φ1) / 2 > 0 ? halfπ : -halfπ);
paulo@89	3446 listener.point(sλ0, φ0);
paulo@89	3447 listener.lineEnd();
paulo@89	3448 listener.lineStart();
paulo@89	3449 listener.point(sλ1, φ0);
paulo@89	3450 listener.point(λ1, φ0);
paulo@89	3451 clean = 0;
paulo@89	3452 } else if (sλ0 !== sλ1 && dλ >= π) {
paulo@89	3453 if (abs(λ0 - sλ0) < ε) λ0 -= sλ0 * ε;
paulo@89	3454 if (abs(λ1 - sλ1) < ε) λ1 -= sλ1 * ε;
paulo@89	3455 φ0 = d3_geo_clipAntimeridianIntersect(λ0, φ0, λ1, φ1);
paulo@89	3456 listener.point(sλ0, φ0);
paulo@89	3457 listener.lineEnd();
paulo@89	3458 listener.lineStart();
paulo@89	3459 listener.point(sλ1, φ0);
paulo@89	3460 clean = 0;
paulo@89	3461 }
paulo@89	3462 listener.point(λ0 = λ1, φ0 = φ1);
paulo@89	3463 sλ0 = sλ1;
paulo@89	3464 },
paulo@89	3465 lineEnd: function() {
paulo@89	3466 listener.lineEnd();
paulo@89	3467 λ0 = φ0 = NaN;
paulo@89	3468 },
paulo@89	3469 clean: function() {
paulo@89	3470 return 2 - clean;
paulo@89	3471 }
paulo@89	3472 };
paulo@89	3473 }
paulo@89	3474 function d3_geo_clipAntimeridianIntersect(λ0, φ0, λ1, φ1) {
paulo@89	3475 var cosφ0, cosφ1, sinλ0_λ1 = Math.sin(λ0 - λ1);
paulo@89	3476 return abs(sinλ0_λ1) > ε ? Math.atan((Math.sin(φ0) * (cosφ1 = Math.cos(φ1)) * Math.sin(λ1) - Math.sin(φ1) * (cosφ0 = Math.cos(φ0)) * Math.sin(λ0)) / (cosφ0 * cosφ1 * sinλ0_λ1)) : (φ0 + φ1) / 2;
paulo@89	3477 }
paulo@89	3478 function d3_geo_clipAntimeridianInterpolate(from, to, direction, listener) {
paulo@89	3479 var φ;
paulo@89	3480 if (from == null) {
paulo@89	3481 φ = direction * halfπ;
paulo@89	3482 listener.point(-π, φ);
paulo@89	3483 listener.point(0, φ);
paulo@89	3484 listener.point(π, φ);
paulo@89	3485 listener.point(π, 0);
paulo@89	3486 listener.point(π, -φ);
paulo@89	3487 listener.point(0, -φ);
paulo@89	3488 listener.point(-π, -φ);
paulo@89	3489 listener.point(-π, 0);
paulo@89	3490 listener.point(-π, φ);
paulo@89	3491 } else if (abs(from[0] - to[0]) > ε) {
paulo@89	3492 var s = from[0] < to[0] ? π : -π;
paulo@89	3493 φ = direction * s / 2;
paulo@89	3494 listener.point(-s, φ);
paulo@89	3495 listener.point(0, φ);
paulo@89	3496 listener.point(s, φ);
paulo@89	3497 } else {
paulo@89	3498 listener.point(to[0], to[1]);
paulo@89	3499 }
paulo@89	3500 }
paulo@89	3501 function d3_geo_pointInPolygon(point, polygon) {
paulo@89	3502 var meridian = point[0], parallel = point[1], meridianNormal = [ Math.sin(meridian), -Math.cos(meridian), 0 ], polarAngle = 0, winding = 0;
paulo@89	3503 d3_geo_areaRingSum.reset();
paulo@89	3504 for (var i = 0, n = polygon.length; i < n; ++i) {
paulo@89	3505 var ring = polygon[i], m = ring.length;
paulo@89	3506 if (!m) continue;
paulo@89	3507 var point0 = ring[0], λ0 = point0[0], φ0 = point0[1] / 2 + π / 4, sinφ0 = Math.sin(φ0), cosφ0 = Math.cos(φ0), j = 1;
paulo@89	3508 while (true) {
paulo@89	3509 if (j === m) j = 0;
paulo@89	3510 point = ring[j];
paulo@89	3511 var λ = point[0], φ = point[1] / 2 + π / 4, sinφ = Math.sin(φ), cosφ = Math.cos(φ), dλ = λ - λ0, sdλ = dλ >= 0 ? 1 : -1, adλ = sdλ * dλ, antimeridian = adλ > π, k = sinφ0 * sinφ;
paulo@89	3512 d3_geo_areaRingSum.add(Math.atan2(k * sdλ * Math.sin(adλ), cosφ0 * cosφ + k * Math.cos(adλ)));
paulo@89	3513 polarAngle += antimeridian ? dλ + sdλ * τ : dλ;
paulo@89	3514 if (antimeridian ^ λ0 >= meridian ^ λ >= meridian) {
paulo@89	3515 var arc = d3_geo_cartesianCross(d3_geo_cartesian(point0), d3_geo_cartesian(point));
paulo@89	3516 d3_geo_cartesianNormalize(arc);
paulo@89	3517 var intersection = d3_geo_cartesianCross(meridianNormal, arc);
paulo@89	3518 d3_geo_cartesianNormalize(intersection);
paulo@89	3519 var φarc = (antimeridian ^ dλ >= 0 ? -1 : 1) * d3_asin(intersection[2]);
paulo@89	3520 if (parallel > φarc \|\| parallel === φarc && (arc[0] \|\| arc[1])) {
paulo@89	3521 winding += antimeridian ^ dλ >= 0 ? 1 : -1;
paulo@89	3522 }
paulo@89	3523 }
paulo@89	3524 if (!j++) break;
paulo@89	3525 λ0 = λ, sinφ0 = sinφ, cosφ0 = cosφ, point0 = point;
paulo@89	3526 }
paulo@89	3527 }
paulo@89	3528 return (polarAngle < -ε \|\| polarAngle < ε && d3_geo_areaRingSum < -ε) ^ winding & 1;
paulo@89	3529 }
paulo@89	3530 function d3_geo_clipCircle(radius) {
paulo@89	3531 var cr = Math.cos(radius), smallRadius = cr > 0, notHemisphere = abs(cr) > ε, interpolate = d3_geo_circleInterpolate(radius, 6 * d3_radians);
paulo@89	3532 return d3_geo_clip(visible, clipLine, interpolate, smallRadius ? [ 0, -radius ] : [ -π, radius - π ]);
paulo@89	3533 function visible(λ, φ) {
paulo@89	3534 return Math.cos(λ) * Math.cos(φ) > cr;
paulo@89	3535 }
paulo@89	3536 function clipLine(listener) {
paulo@89	3537 var point0, c0, v0, v00, clean;
paulo@89	3538 return {
paulo@89	3539 lineStart: function() {
paulo@89	3540 v00 = v0 = false;
paulo@89	3541 clean = 1;
paulo@89	3542 },
paulo@89	3543 point: function(λ, φ) {
paulo@89	3544 var point1 = [ λ, φ ], point2, v = visible(λ, φ), c = smallRadius ? v ? 0 : code(λ, φ) : v ? code(λ + (λ < 0 ? π : -π), φ) : 0;
paulo@89	3545 if (!point0 && (v00 = v0 = v)) listener.lineStart();
paulo@89	3546 if (v !== v0) {
paulo@89	3547 point2 = intersect(point0, point1);
paulo@89	3548 if (d3_geo_sphericalEqual(point0, point2) \|\| d3_geo_sphericalEqual(point1, point2)) {
paulo@89	3549 point1[0] += ε;
paulo@89	3550 point1[1] += ε;
paulo@89	3551 v = visible(point1[0], point1[1]);
paulo@89	3552 }
paulo@89	3553 }
paulo@89	3554 if (v !== v0) {
paulo@89	3555 clean = 0;
paulo@89	3556 if (v) {
paulo@89	3557 listener.lineStart();
paulo@89	3558 point2 = intersect(point1, point0);
paulo@89	3559 listener.point(point2[0], point2[1]);
paulo@89	3560 } else {
paulo@89	3561 point2 = intersect(point0, point1);
paulo@89	3562 listener.point(point2[0], point2[1]);
paulo@89	3563 listener.lineEnd();
paulo@89	3564 }
paulo@89	3565 point0 = point2;
paulo@89	3566 } else if (notHemisphere && point0 && smallRadius ^ v) {
paulo@89	3567 var t;
paulo@89	3568 if (!(c & c0) && (t = intersect(point1, point0, true))) {
paulo@89	3569 clean = 0;
paulo@89	3570 if (smallRadius) {
paulo@89	3571 listener.lineStart();
paulo@89	3572 listener.point(t[0][0], t[0][1]);
paulo@89	3573 listener.point(t[1][0], t[1][1]);
paulo@89	3574 listener.lineEnd();
paulo@89	3575 } else {
paulo@89	3576 listener.point(t[1][0], t[1][1]);
paulo@89	3577 listener.lineEnd();
paulo@89	3578 listener.lineStart();
paulo@89	3579 listener.point(t[0][0], t[0][1]);
paulo@89	3580 }
paulo@89	3581 }
paulo@89	3582 }
paulo@89	3583 if (v && (!point0 \|\| !d3_geo_sphericalEqual(point0, point1))) {
paulo@89	3584 listener.point(point1[0], point1[1]);
paulo@89	3585 }
paulo@89	3586 point0 = point1, v0 = v, c0 = c;
paulo@89	3587 },
paulo@89	3588 lineEnd: function() {
paulo@89	3589 if (v0) listener.lineEnd();
paulo@89	3590 point0 = null;
paulo@89	3591 },
paulo@89	3592 clean: function() {
paulo@89	3593 return clean \| (v00 && v0) << 1;
paulo@89	3594 }
paulo@89	3595 };
paulo@89	3596 }
paulo@89	3597 function intersect(a, b, two) {
paulo@89	3598 var pa = d3_geo_cartesian(a), pb = d3_geo_cartesian(b);
paulo@89	3599 var n1 = [ 1, 0, 0 ], n2 = d3_geo_cartesianCross(pa, pb), n2n2 = d3_geo_cartesianDot(n2, n2), n1n2 = n2[0], determinant = n2n2 - n1n2 * n1n2;
paulo@89	3600 if (!determinant) return !two && a;
paulo@89	3601 var c1 = cr * n2n2 / determinant, c2 = -cr * n1n2 / determinant, n1xn2 = d3_geo_cartesianCross(n1, n2), A = d3_geo_cartesianScale(n1, c1), B = d3_geo_cartesianScale(n2, c2);
paulo@89	3602 d3_geo_cartesianAdd(A, B);
paulo@89	3603 var u = n1xn2, w = d3_geo_cartesianDot(A, u), uu = d3_geo_cartesianDot(u, u), t2 = w * w - uu * (d3_geo_cartesianDot(A, A) - 1);
paulo@89	3604 if (t2 < 0) return;
paulo@89	3605 var t = Math.sqrt(t2), q = d3_geo_cartesianScale(u, (-w - t) / uu);
paulo@89	3606 d3_geo_cartesianAdd(q, A);
paulo@89	3607 q = d3_geo_spherical(q);
paulo@89	3608 if (!two) return q;
paulo@89	3609 var λ0 = a[0], λ1 = b[0], φ0 = a[1], φ1 = b[1], z;
paulo@89	3610 if (λ1 < λ0) z = λ0, λ0 = λ1, λ1 = z;
paulo@89	3611 var δλ = λ1 - λ0, polar = abs(δλ - π) < ε, meridian = polar \|\| δλ < ε;
paulo@89	3612 if (!polar && φ1 < φ0) z = φ0, φ0 = φ1, φ1 = z;
paulo@89	3613 if (meridian ? polar ? φ0 + φ1 > 0 ^ q[1] < (abs(q[0] - λ0) < ε ? φ0 : φ1) : φ0 <= q[1] && q[1] <= φ1 : δλ > π ^ (λ0 <= q[0] && q[0] <= λ1)) {
paulo@89	3614 var q1 = d3_geo_cartesianScale(u, (-w + t) / uu);
paulo@89	3615 d3_geo_cartesianAdd(q1, A);
paulo@89	3616 return [ q, d3_geo_spherical(q1) ];
paulo@89	3617 }
paulo@89	3618 }
paulo@89	3619 function code(λ, φ) {
paulo@89	3620 var r = smallRadius ? radius : π - radius, code = 0;
paulo@89	3621 if (λ < -r) code \|= 1; else if (λ > r) code \|= 2;
paulo@89	3622 if (φ < -r) code \|= 4; else if (φ > r) code \|= 8;
paulo@89	3623 return code;
paulo@89	3624 }
paulo@89	3625 }
paulo@89	3626 function d3_geom_clipLine(x0, y0, x1, y1) {
paulo@89	3627 return function(line) {
paulo@89	3628 var a = line.a, b = line.b, ax = a.x, ay = a.y, bx = b.x, by = b.y, t0 = 0, t1 = 1, dx = bx - ax, dy = by - ay, r;
paulo@89	3629 r = x0 - ax;
paulo@89	3630 if (!dx && r > 0) return;
paulo@89	3631 r /= dx;
paulo@89	3632 if (dx < 0) {
paulo@89	3633 if (r < t0) return;
paulo@89	3634 if (r < t1) t1 = r;
paulo@89	3635 } else if (dx > 0) {
paulo@89	3636 if (r > t1) return;
paulo@89	3637 if (r > t0) t0 = r;
paulo@89	3638 }
paulo@89	3639 r = x1 - ax;
paulo@89	3640 if (!dx && r < 0) return;
paulo@89	3641 r /= dx;
paulo@89	3642 if (dx < 0) {
paulo@89	3643 if (r > t1) return;
paulo@89	3644 if (r > t0) t0 = r;
paulo@89	3645 } else if (dx > 0) {
paulo@89	3646 if (r < t0) return;
paulo@89	3647 if (r < t1) t1 = r;
paulo@89	3648 }
paulo@89	3649 r = y0 - ay;
paulo@89	3650 if (!dy && r > 0) return;
paulo@89	3651 r /= dy;
paulo@89	3652 if (dy < 0) {
paulo@89	3653 if (r < t0) return;
paulo@89	3654 if (r < t1) t1 = r;
paulo@89	3655 } else if (dy > 0) {
paulo@89	3656 if (r > t1) return;
paulo@89	3657 if (r > t0) t0 = r;
paulo@89	3658 }
paulo@89	3659 r = y1 - ay;
paulo@89	3660 if (!dy && r < 0) return;
paulo@89	3661 r /= dy;
paulo@89	3662 if (dy < 0) {
paulo@89	3663 if (r > t1) return;
paulo@89	3664 if (r > t0) t0 = r;
paulo@89	3665 } else if (dy > 0) {
paulo@89	3666 if (r < t0) return;
paulo@89	3667 if (r < t1) t1 = r;
paulo@89	3668 }
paulo@89	3669 if (t0 > 0) line.a = {
paulo@89	3670 x: ax + t0 * dx,
paulo@89	3671 y: ay + t0 * dy
paulo@89	3672 };
paulo@89	3673 if (t1 < 1) line.b = {
paulo@89	3674 x: ax + t1 * dx,
paulo@89	3675 y: ay + t1 * dy
paulo@89	3676 };
paulo@89	3677 return line;
paulo@89	3678 };
paulo@89	3679 }
paulo@89	3680 var d3_geo_clipExtentMAX = 1e9;
paulo@89	3681 d3.geo.clipExtent = function() {
paulo@89	3682 var x0, y0, x1, y1, stream, clip, clipExtent = {
paulo@89	3683 stream: function(output) {
paulo@89	3684 if (stream) stream.valid = false;
paulo@89	3685 stream = clip(output);
paulo@89	3686 stream.valid = true;
paulo@89	3687 return stream;
paulo@89	3688 },
paulo@89	3689 extent: function(_) {
paulo@89	3690 if (!arguments.length) return [ [ x0, y0 ], [ x1, y1 ] ];
paulo@89	3691 clip = d3_geo_clipExtent(x0 = +_[0][0], y0 = +_[0][1], x1 = +_[1][0], y1 = +_[1][1]);
paulo@89	3692 if (stream) stream.valid = false, stream = null;
paulo@89	3693 return clipExtent;
paulo@89	3694 }
paulo@89	3695 };
paulo@89	3696 return clipExtent.extent([ [ 0, 0 ], [ 960, 500 ] ]);
paulo@89	3697 };
paulo@89	3698 function d3_geo_clipExtent(x0, y0, x1, y1) {
paulo@89	3699 return function(listener) {
paulo@89	3700 var listener_ = listener, bufferListener = d3_geo_clipBufferListener(), clipLine = d3_geom_clipLine(x0, y0, x1, y1), segments, polygon, ring;
paulo@89	3701 var clip = {
paulo@89	3702 point: point,
paulo@89	3703 lineStart: lineStart,
paulo@89	3704 lineEnd: lineEnd,
paulo@89	3705 polygonStart: function() {
paulo@89	3706 listener = bufferListener;
paulo@89	3707 segments = [];
paulo@89	3708 polygon = [];
paulo@89	3709 clean = true;
paulo@89	3710 },
paulo@89	3711 polygonEnd: function() {
paulo@89	3712 listener = listener_;
paulo@89	3713 segments = d3.merge(segments);
paulo@89	3714 var clipStartInside = insidePolygon([ x0, y1 ]), inside = clean && clipStartInside, visible = segments.length;
paulo@89	3715 if (inside \|\| visible) {
paulo@89	3716 listener.polygonStart();
paulo@89	3717 if (inside) {
paulo@89	3718 listener.lineStart();
paulo@89	3719 interpolate(null, null, 1, listener);
paulo@89	3720 listener.lineEnd();
paulo@89	3721 }
paulo@89	3722 if (visible) {
paulo@89	3723 d3_geo_clipPolygon(segments, compare, clipStartInside, interpolate, listener);
paulo@89	3724 }
paulo@89	3725 listener.polygonEnd();
paulo@89	3726 }
paulo@89	3727 segments = polygon = ring = null;
paulo@89	3728 }
paulo@89	3729 };
paulo@89	3730 function insidePolygon(p) {
paulo@89	3731 var wn = 0, n = polygon.length, y = p[1];
paulo@89	3732 for (var i = 0; i < n; ++i) {
paulo@89	3733 for (var j = 1, v = polygon[i], m = v.length, a = v[0], b; j < m; ++j) {
paulo@89	3734 b = v[j];
paulo@89	3735 if (a[1] <= y) {
paulo@89	3736 if (b[1] > y && d3_cross2d(a, b, p) > 0) ++wn;
paulo@89	3737 } else {
paulo@89	3738 if (b[1] <= y && d3_cross2d(a, b, p) < 0) --wn;
paulo@89	3739 }
paulo@89	3740 a = b;
paulo@89	3741 }
paulo@89	3742 }
paulo@89	3743 return wn !== 0;
paulo@89	3744 }
paulo@89	3745 function interpolate(from, to, direction, listener) {
paulo@89	3746 var a = 0, a1 = 0;
paulo@89	3747 if (from == null \|\| (a = corner(from, direction)) !== (a1 = corner(to, direction)) \|\| comparePoints(from, to) < 0 ^ direction > 0) {
paulo@89	3748 do {
paulo@89	3749 listener.point(a === 0 \|\| a === 3 ? x0 : x1, a > 1 ? y1 : y0);
paulo@89	3750 } while ((a = (a + direction + 4) % 4) !== a1);
paulo@89	3751 } else {
paulo@89	3752 listener.point(to[0], to[1]);
paulo@89	3753 }
paulo@89	3754 }
paulo@89	3755 function pointVisible(x, y) {
paulo@89	3756 return x0 <= x && x <= x1 && y0 <= y && y <= y1;
paulo@89	3757 }
paulo@89	3758 function point(x, y) {
paulo@89	3759 if (pointVisible(x, y)) listener.point(x, y);
paulo@89	3760 }
paulo@89	3761 var x__, y__, v__, x_, y_, v_, first, clean;
paulo@89	3762 function lineStart() {
paulo@89	3763 clip.point = linePoint;
paulo@89	3764 if (polygon) polygon.push(ring = []);
paulo@89	3765 first = true;
paulo@89	3766 v_ = false;
paulo@89	3767 x_ = y_ = NaN;
paulo@89	3768 }
paulo@89	3769 function lineEnd() {
paulo@89	3770 if (segments) {
paulo@89	3771 linePoint(x__, y__);
paulo@89	3772 if (v__ && v_) bufferListener.rejoin();
paulo@89	3773 segments.push(bufferListener.buffer());
paulo@89	3774 }
paulo@89	3775 clip.point = point;
paulo@89	3776 if (v_) listener.lineEnd();
paulo@89	3777 }
paulo@89	3778 function linePoint(x, y) {
paulo@89	3779 x = Math.max(-d3_geo_clipExtentMAX, Math.min(d3_geo_clipExtentMAX, x));
paulo@89	3780 y = Math.max(-d3_geo_clipExtentMAX, Math.min(d3_geo_clipExtentMAX, y));
paulo@89	3781 var v = pointVisible(x, y);
paulo@89	3782 if (polygon) ring.push([ x, y ]);
paulo@89	3783 if (first) {
paulo@89	3784 x__ = x, y__ = y, v__ = v;
paulo@89	3785 first = false;
paulo@89	3786 if (v) {
paulo@89	3787 listener.lineStart();
paulo@89	3788 listener.point(x, y);
paulo@89	3789 }
paulo@89	3790 } else {
paulo@89	3791 if (v && v_) listener.point(x, y); else {
paulo@89	3792 var l = {
paulo@89	3793 a: {
paulo@89	3794 x: x_,
paulo@89	3795 y: y_
paulo@89	3796 },
paulo@89	3797 b: {
paulo@89	3798 x: x,
paulo@89	3799 y: y
paulo@89	3800 }
paulo@89	3801 };
paulo@89	3802 if (clipLine(l)) {
paulo@89	3803 if (!v_) {
paulo@89	3804 listener.lineStart();
paulo@89	3805 listener.point(l.a.x, l.a.y);
paulo@89	3806 }
paulo@89	3807 listener.point(l.b.x, l.b.y);
paulo@89	3808 if (!v) listener.lineEnd();
paulo@89	3809 clean = false;
paulo@89	3810 } else if (v) {
paulo@89	3811 listener.lineStart();
paulo@89	3812 listener.point(x, y);
paulo@89	3813 clean = false;
paulo@89	3814 }
paulo@89	3815 }
paulo@89	3816 }
paulo@89	3817 x_ = x, y_ = y, v_ = v;
paulo@89	3818 }
paulo@89	3819 return clip;
paulo@89	3820 };
paulo@89	3821 function corner(p, direction) {
paulo@89	3822 return abs(p[0] - x0) < ε ? direction > 0 ? 0 : 3 : abs(p[0] - x1) < ε ? direction > 0 ? 2 : 1 : abs(p[1] - y0) < ε ? direction > 0 ? 1 : 0 : direction > 0 ? 3 : 2;
paulo@89	3823 }
paulo@89	3824 function compare(a, b) {
paulo@89	3825 return comparePoints(a.x, b.x);
paulo@89	3826 }
paulo@89	3827 function comparePoints(a, b) {
paulo@89	3828 var ca = corner(a, 1), cb = corner(b, 1);
paulo@89	3829 return ca !== cb ? ca - cb : ca === 0 ? b[1] - a[1] : ca === 1 ? a[0] - b[0] : ca === 2 ? a[1] - b[1] : b[0] - a[0];
paulo@89	3830 }
paulo@89	3831 }
paulo@89	3832 function d3_geo_conic(projectAt) {
paulo@89	3833 var φ0 = 0, φ1 = π / 3, m = d3_geo_projectionMutator(projectAt), p = m(φ0, φ1);
paulo@89	3834 p.parallels = function(_) {
paulo@89	3835 if (!arguments.length) return [ φ0 / π * 180, φ1 / π * 180 ];
paulo@89	3836 return m(φ0 = _[0] * π / 180, φ1 = _[1] * π / 180);
paulo@89	3837 };
paulo@89	3838 return p;
paulo@89	3839 }
paulo@89	3840 function d3_geo_conicEqualArea(φ0, φ1) {
paulo@89	3841 var sinφ0 = Math.sin(φ0), n = (sinφ0 + Math.sin(φ1)) / 2, C = 1 + sinφ0 * (2 * n - sinφ0), ρ0 = Math.sqrt(C) / n;
paulo@89	3842 function forward(λ, φ) {
paulo@89	3843 var ρ = Math.sqrt(C - 2 * n * Math.sin(φ)) / n;
paulo@89	3844 return [ ρ * Math.sin(λ = n), ρ0 - ρ Math.cos(λ) ];
paulo@89	3845 }
paulo@89	3846 forward.invert = function(x, y) {
paulo@89	3847 var ρ0_y = ρ0 - y;
paulo@89	3848 return [ Math.atan2(x, ρ0_y) / n, d3_asin((C - (x * x + ρ0_y * ρ0_y) * n * n) / (2 * n)) ];
paulo@89	3849 };
paulo@89	3850 return forward;
paulo@89	3851 }
paulo@89	3852 (d3.geo.conicEqualArea = function() {
paulo@89	3853 return d3_geo_conic(d3_geo_conicEqualArea);
paulo@89	3854 }).raw = d3_geo_conicEqualArea;
paulo@89	3855 d3.geo.albers = function() {
paulo@89	3856 return d3.geo.conicEqualArea().rotate([ 96, 0 ]).center([ -.6, 38.7 ]).parallels([ 29.5, 45.5 ]).scale(1070);
paulo@89	3857 };
paulo@89	3858 d3.geo.albersUsa = function() {
paulo@89	3859 var lower48 = d3.geo.albers();
paulo@89	3860 var alaska = d3.geo.conicEqualArea().rotate([ 154, 0 ]).center([ -2, 58.5 ]).parallels([ 55, 65 ]);
paulo@89	3861 var hawaii = d3.geo.conicEqualArea().rotate([ 157, 0 ]).center([ -3, 19.9 ]).parallels([ 8, 18 ]);
paulo@89	3862 var point, pointStream = {
paulo@89	3863 point: function(x, y) {
paulo@89	3864 point = [ x, y ];
paulo@89	3865 }
paulo@89	3866 }, lower48Point, alaskaPoint, hawaiiPoint;
paulo@89	3867 function albersUsa(coordinates) {
paulo@89	3868 var x = coordinates[0], y = coordinates[1];
paulo@89	3869 point = null;
paulo@89	3870 (lower48Point(x, y), point) \|\| (alaskaPoint(x, y), point) \|\| hawaiiPoint(x, y);
paulo@89	3871 return point;
paulo@89	3872 }
paulo@89	3873 albersUsa.invert = function(coordinates) {
paulo@89	3874 var k = lower48.scale(), t = lower48.translate(), x = (coordinates[0] - t[0]) / k, y = (coordinates[1] - t[1]) / k;
paulo@89	3875 return (y >= .12 && y < .234 && x >= -.425 && x < -.214 ? alaska : y >= .166 && y < .234 && x >= -.214 && x < -.115 ? hawaii : lower48).invert(coordinates);
paulo@89	3876 };
paulo@89	3877 albersUsa.stream = function(stream) {
paulo@89	3878 var lower48Stream = lower48.stream(stream), alaskaStream = alaska.stream(stream), hawaiiStream = hawaii.stream(stream);
paulo@89	3879 return {
paulo@89	3880 point: function(x, y) {
paulo@89	3881 lower48Stream.point(x, y);
paulo@89	3882 alaskaStream.point(x, y);
paulo@89	3883 hawaiiStream.point(x, y);
paulo@89	3884 },
paulo@89	3885 sphere: function() {
paulo@89	3886 lower48Stream.sphere();
paulo@89	3887 alaskaStream.sphere();
paulo@89	3888 hawaiiStream.sphere();
paulo@89	3889 },
paulo@89	3890 lineStart: function() {
paulo@89	3891 lower48Stream.lineStart();
paulo@89	3892 alaskaStream.lineStart();
paulo@89	3893 hawaiiStream.lineStart();
paulo@89	3894 },
paulo@89	3895 lineEnd: function() {
paulo@89	3896 lower48Stream.lineEnd();
paulo@89	3897 alaskaStream.lineEnd();
paulo@89	3898 hawaiiStream.lineEnd();
paulo@89	3899 },
paulo@89	3900 polygonStart: function() {
paulo@89	3901 lower48Stream.polygonStart();
paulo@89	3902 alaskaStream.polygonStart();
paulo@89	3903 hawaiiStream.polygonStart();
paulo@89	3904 },
paulo@89	3905 polygonEnd: function() {
paulo@89	3906 lower48Stream.polygonEnd();
paulo@89	3907 alaskaStream.polygonEnd();
paulo@89	3908 hawaiiStream.polygonEnd();
paulo@89	3909 }
paulo@89	3910 };
paulo@89	3911 };
paulo@89	3912 albersUsa.precision = function(_) {
paulo@89	3913 if (!arguments.length) return lower48.precision();
paulo@89	3914 lower48.precision(_);
paulo@89	3915 alaska.precision(_);
paulo@89	3916 hawaii.precision(_);
paulo@89	3917 return albersUsa;
paulo@89	3918 };
paulo@89	3919 albersUsa.scale = function(_) {
paulo@89	3920 if (!arguments.length) return lower48.scale();
paulo@89	3921 lower48.scale(_);
paulo@89	3922 alaska.scale(_ * .35);
paulo@89	3923 hawaii.scale(_);
paulo@89	3924 return albersUsa.translate(lower48.translate());
paulo@89	3925 };
paulo@89	3926 albersUsa.translate = function(_) {
paulo@89	3927 if (!arguments.length) return lower48.translate();
paulo@89	3928 var k = lower48.scale(), x = +_[0], y = +_[1];
paulo@89	3929 lower48Point = lower48.translate(_).clipExtent([ [ x - .455 * k, y - .238 * k ], [ x + .455 * k, y + .238 * k ] ]).stream(pointStream).point;
paulo@89	3930 alaskaPoint = alaska.translate([ x - .307 * k, y + .201 * k ]).clipExtent([ [ x - .425 * k + ε, y + .12 * k + ε ], [ x - .214 * k - ε, y + .234 * k - ε ] ]).stream(pointStream).point;
paulo@89	3931 hawaiiPoint = hawaii.translate([ x - .205 * k, y + .212 * k ]).clipExtent([ [ x - .214 * k + ε, y + .166 * k + ε ], [ x - .115 * k - ε, y + .234 * k - ε ] ]).stream(pointStream).point;
paulo@89	3932 return albersUsa;
paulo@89	3933 };
paulo@89	3934 return albersUsa.scale(1070);
paulo@89	3935 };
paulo@89	3936 var d3_geo_pathAreaSum, d3_geo_pathAreaPolygon, d3_geo_pathArea = {
paulo@89	3937 point: d3_noop,
paulo@89	3938 lineStart: d3_noop,
paulo@89	3939 lineEnd: d3_noop,
paulo@89	3940 polygonStart: function() {
paulo@89	3941 d3_geo_pathAreaPolygon = 0;
paulo@89	3942 d3_geo_pathArea.lineStart = d3_geo_pathAreaRingStart;
paulo@89	3943 },
paulo@89	3944 polygonEnd: function() {
paulo@89	3945 d3_geo_pathArea.lineStart = d3_geo_pathArea.lineEnd = d3_geo_pathArea.point = d3_noop;
paulo@89	3946 d3_geo_pathAreaSum += abs(d3_geo_pathAreaPolygon / 2);
paulo@89	3947 }
paulo@89	3948 };
paulo@89	3949 function d3_geo_pathAreaRingStart() {
paulo@89	3950 var x00, y00, x0, y0;
paulo@89	3951 d3_geo_pathArea.point = function(x, y) {
paulo@89	3952 d3_geo_pathArea.point = nextPoint;
paulo@89	3953 x00 = x0 = x, y00 = y0 = y;
paulo@89	3954 };
paulo@89	3955 function nextPoint(x, y) {
paulo@89	3956 d3_geo_pathAreaPolygon += y0 * x - x0 * y;
paulo@89	3957 x0 = x, y0 = y;
paulo@89	3958 }
paulo@89	3959 d3_geo_pathArea.lineEnd = function() {
paulo@89	3960 nextPoint(x00, y00);
paulo@89	3961 };
paulo@89	3962 }
paulo@89	3963 var d3_geo_pathBoundsX0, d3_geo_pathBoundsY0, d3_geo_pathBoundsX1, d3_geo_pathBoundsY1;
paulo@89	3964 var d3_geo_pathBounds = {
paulo@89	3965 point: d3_geo_pathBoundsPoint,
paulo@89	3966 lineStart: d3_noop,
paulo@89	3967 lineEnd: d3_noop,
paulo@89	3968 polygonStart: d3_noop,
paulo@89	3969 polygonEnd: d3_noop
paulo@89	3970 };
paulo@89	3971 function d3_geo_pathBoundsPoint(x, y) {
paulo@89	3972 if (x < d3_geo_pathBoundsX0) d3_geo_pathBoundsX0 = x;
paulo@89	3973 if (x > d3_geo_pathBoundsX1) d3_geo_pathBoundsX1 = x;
paulo@89	3974 if (y < d3_geo_pathBoundsY0) d3_geo_pathBoundsY0 = y;
paulo@89	3975 if (y > d3_geo_pathBoundsY1) d3_geo_pathBoundsY1 = y;
paulo@89	3976 }
paulo@89	3977 function d3_geo_pathBuffer() {
paulo@89	3978 var pointCircle = d3_geo_pathBufferCircle(4.5), buffer = [];
paulo@89	3979 var stream = {
paulo@89	3980 point: point,
paulo@89	3981 lineStart: function() {
paulo@89	3982 stream.point = pointLineStart;
paulo@89	3983 },
paulo@89	3984 lineEnd: lineEnd,
paulo@89	3985 polygonStart: function() {
paulo@89	3986 stream.lineEnd = lineEndPolygon;
paulo@89	3987 },
paulo@89	3988 polygonEnd: function() {
paulo@89	3989 stream.lineEnd = lineEnd;
paulo@89	3990 stream.point = point;
paulo@89	3991 },
paulo@89	3992 pointRadius: function(_) {
paulo@89	3993 pointCircle = d3_geo_pathBufferCircle(_);
paulo@89	3994 return stream;
paulo@89	3995 },
paulo@89	3996 result: function() {
paulo@89	3997 if (buffer.length) {
paulo@89	3998 var result = buffer.join("");
paulo@89	3999 buffer = [];
paulo@89	4000 return result;
paulo@89	4001 }
paulo@89	4002 }
paulo@89	4003 };
paulo@89	4004 function point(x, y) {
paulo@89	4005 buffer.push("M", x, ",", y, pointCircle);
paulo@89	4006 }
paulo@89	4007 function pointLineStart(x, y) {
paulo@89	4008 buffer.push("M", x, ",", y);
paulo@89	4009 stream.point = pointLine;
paulo@89	4010 }
paulo@89	4011 function pointLine(x, y) {
paulo@89	4012 buffer.push("L", x, ",", y);
paulo@89	4013 }
paulo@89	4014 function lineEnd() {
paulo@89	4015 stream.point = point;
paulo@89	4016 }
paulo@89	4017 function lineEndPolygon() {
paulo@89	4018 buffer.push("Z");
paulo@89	4019 }
paulo@89	4020 return stream;
paulo@89	4021 }
paulo@89	4022 function d3_geo_pathBufferCircle(radius) {
paulo@89	4023 return "m0," + radius + "a" + radius + "," + radius + " 0 1,1 0," + -2 * radius + "a" + radius + "," + radius + " 0 1,1 0," + 2 * radius + "z";
paulo@89	4024 }
paulo@89	4025 var d3_geo_pathCentroid = {
paulo@89	4026 point: d3_geo_pathCentroidPoint,
paulo@89	4027 lineStart: d3_geo_pathCentroidLineStart,
paulo@89	4028 lineEnd: d3_geo_pathCentroidLineEnd,
paulo@89	4029 polygonStart: function() {
paulo@89	4030 d3_geo_pathCentroid.lineStart = d3_geo_pathCentroidRingStart;
paulo@89	4031 },
paulo@89	4032 polygonEnd: function() {
paulo@89	4033 d3_geo_pathCentroid.point = d3_geo_pathCentroidPoint;
paulo@89	4034 d3_geo_pathCentroid.lineStart = d3_geo_pathCentroidLineStart;
paulo@89	4035 d3_geo_pathCentroid.lineEnd = d3_geo_pathCentroidLineEnd;
paulo@89	4036 }
paulo@89	4037 };
paulo@89	4038 function d3_geo_pathCentroidPoint(x, y) {
paulo@89	4039 d3_geo_centroidX0 += x;
paulo@89	4040 d3_geo_centroidY0 += y;
paulo@89	4041 ++d3_geo_centroidZ0;
paulo@89	4042 }
paulo@89	4043 function d3_geo_pathCentroidLineStart() {
paulo@89	4044 var x0, y0;
paulo@89	4045 d3_geo_pathCentroid.point = function(x, y) {
paulo@89	4046 d3_geo_pathCentroid.point = nextPoint;
paulo@89	4047 d3_geo_pathCentroidPoint(x0 = x, y0 = y);
paulo@89	4048 };
paulo@89	4049 function nextPoint(x, y) {
paulo@89	4050 var dx = x - x0, dy = y - y0, z = Math.sqrt(dx * dx + dy * dy);
paulo@89	4051 d3_geo_centroidX1 += z * (x0 + x) / 2;
paulo@89	4052 d3_geo_centroidY1 += z * (y0 + y) / 2;
paulo@89	4053 d3_geo_centroidZ1 += z;
paulo@89	4054 d3_geo_pathCentroidPoint(x0 = x, y0 = y);
paulo@89	4055 }
paulo@89	4056 }
paulo@89	4057 function d3_geo_pathCentroidLineEnd() {
paulo@89	4058 d3_geo_pathCentroid.point = d3_geo_pathCentroidPoint;
paulo@89	4059 }
paulo@89	4060 function d3_geo_pathCentroidRingStart() {
paulo@89	4061 var x00, y00, x0, y0;
paulo@89	4062 d3_geo_pathCentroid.point = function(x, y) {
paulo@89	4063 d3_geo_pathCentroid.point = nextPoint;
paulo@89	4064 d3_geo_pathCentroidPoint(x00 = x0 = x, y00 = y0 = y);
paulo@89	4065 };
paulo@89	4066 function nextPoint(x, y) {
paulo@89	4067 var dx = x - x0, dy = y - y0, z = Math.sqrt(dx * dx + dy * dy);
paulo@89	4068 d3_geo_centroidX1 += z * (x0 + x) / 2;
paulo@89	4069 d3_geo_centroidY1 += z * (y0 + y) / 2;
paulo@89	4070 d3_geo_centroidZ1 += z;
paulo@89	4071 z = y0 * x - x0 * y;
paulo@89	4072 d3_geo_centroidX2 += z * (x0 + x);
paulo@89	4073 d3_geo_centroidY2 += z * (y0 + y);
paulo@89	4074 d3_geo_centroidZ2 += z * 3;
paulo@89	4075 d3_geo_pathCentroidPoint(x0 = x, y0 = y);
paulo@89	4076 }
paulo@89	4077 d3_geo_pathCentroid.lineEnd = function() {
paulo@89	4078 nextPoint(x00, y00);
paulo@89	4079 };
paulo@89	4080 }
paulo@89	4081 function d3_geo_pathContext(context) {
paulo@89	4082 var pointRadius = 4.5;
paulo@89	4083 var stream = {
paulo@89	4084 point: point,
paulo@89	4085 lineStart: function() {
paulo@89	4086 stream.point = pointLineStart;
paulo@89	4087 },
paulo@89	4088 lineEnd: lineEnd,
paulo@89	4089 polygonStart: function() {
paulo@89	4090 stream.lineEnd = lineEndPolygon;
paulo@89	4091 },
paulo@89	4092 polygonEnd: function() {
paulo@89	4093 stream.lineEnd = lineEnd;
paulo@89	4094 stream.point = point;
paulo@89	4095 },
paulo@89	4096 pointRadius: function(_) {
paulo@89	4097 pointRadius = _;
paulo@89	4098 return stream;
paulo@89	4099 },
paulo@89	4100 result: d3_noop
paulo@89	4101 };
paulo@89	4102 function point(x, y) {
paulo@89	4103 context.moveTo(x + pointRadius, y);
paulo@89	4104 context.arc(x, y, pointRadius, 0, τ);
paulo@89	4105 }
paulo@89	4106 function pointLineStart(x, y) {
paulo@89	4107 context.moveTo(x, y);
paulo@89	4108 stream.point = pointLine;
paulo@89	4109 }
paulo@89	4110 function pointLine(x, y) {
paulo@89	4111 context.lineTo(x, y);
paulo@89	4112 }
paulo@89	4113 function lineEnd() {
paulo@89	4114 stream.point = point;
paulo@89	4115 }
paulo@89	4116 function lineEndPolygon() {
paulo@89	4117 context.closePath();
paulo@89	4118 }
paulo@89	4119 return stream;
paulo@89	4120 }
paulo@89	4121 function d3_geo_resample(project) {
paulo@89	4122 var δ2 = .5, cosMinDistance = Math.cos(30 * d3_radians), maxDepth = 16;
paulo@89	4123 function resample(stream) {
paulo@89	4124 return (maxDepth ? resampleRecursive : resampleNone)(stream);
paulo@89	4125 }
paulo@89	4126 function resampleNone(stream) {
paulo@89	4127 return d3_geo_transformPoint(stream, function(x, y) {
paulo@89	4128 x = project(x, y);
paulo@89	4129 stream.point(x[0], x[1]);
paulo@89	4130 });
paulo@89	4131 }
paulo@89	4132 function resampleRecursive(stream) {
paulo@89	4133 var λ00, φ00, x00, y00, a00, b00, c00, λ0, x0, y0, a0, b0, c0;
paulo@89	4134 var resample = {
paulo@89	4135 point: point,
paulo@89	4136 lineStart: lineStart,
paulo@89	4137 lineEnd: lineEnd,
paulo@89	4138 polygonStart: function() {
paulo@89	4139 stream.polygonStart();
paulo@89	4140 resample.lineStart = ringStart;
paulo@89	4141 },
paulo@89	4142 polygonEnd: function() {
paulo@89	4143 stream.polygonEnd();
paulo@89	4144 resample.lineStart = lineStart;
paulo@89	4145 }
paulo@89	4146 };
paulo@89	4147 function point(x, y) {
paulo@89	4148 x = project(x, y);
paulo@89	4149 stream.point(x[0], x[1]);
paulo@89	4150 }
paulo@89	4151 function lineStart() {
paulo@89	4152 x0 = NaN;
paulo@89	4153 resample.point = linePoint;
paulo@89	4154 stream.lineStart();
paulo@89	4155 }
paulo@89	4156 function linePoint(λ, φ) {
paulo@89	4157 var c = d3_geo_cartesian([ λ, φ ]), p = project(λ, φ);
paulo@89	4158 resampleLineTo(x0, y0, λ0, a0, b0, c0, x0 = p[0], y0 = p[1], λ0 = λ, a0 = c[0], b0 = c[1], c0 = c[2], maxDepth, stream);
paulo@89	4159 stream.point(x0, y0);
paulo@89	4160 }
paulo@89	4161 function lineEnd() {
paulo@89	4162 resample.point = point;
paulo@89	4163 stream.lineEnd();
paulo@89	4164 }
paulo@89	4165 function ringStart() {
paulo@89	4166 lineStart();
paulo@89	4167 resample.point = ringPoint;
paulo@89	4168 resample.lineEnd = ringEnd;
paulo@89	4169 }
paulo@89	4170 function ringPoint(λ, φ) {
paulo@89	4171 linePoint(λ00 = λ, φ00 = φ), x00 = x0, y00 = y0, a00 = a0, b00 = b0, c00 = c0;
paulo@89	4172 resample.point = linePoint;
paulo@89	4173 }
paulo@89	4174 function ringEnd() {
paulo@89	4175 resampleLineTo(x0, y0, λ0, a0, b0, c0, x00, y00, λ00, a00, b00, c00, maxDepth, stream);
paulo@89	4176 resample.lineEnd = lineEnd;
paulo@89	4177 lineEnd();
paulo@89	4178 }
paulo@89	4179 return resample;
paulo@89	4180 }
paulo@89	4181 function resampleLineTo(x0, y0, λ0, a0, b0, c0, x1, y1, λ1, a1, b1, c1, depth, stream) {
paulo@89	4182 var dx = x1 - x0, dy = y1 - y0, d2 = dx * dx + dy * dy;
paulo@89	4183 if (d2 > 4 * δ2 && depth--) {
paulo@89	4184 var a = a0 + a1, b = b0 + b1, c = c0 + c1, m = Math.sqrt(a * a + b * b + c * c), φ2 = Math.asin(c /= m), λ2 = abs(abs(c) - 1) < ε \|\| abs(λ0 - λ1) < ε ? (λ0 + λ1) / 2 : Math.atan2(b, a), p = project(λ2, φ2), x2 = p[0], y2 = p[1], dx2 = x2 - x0, dy2 = y2 - y0, dz = dy * dx2 - dx * dy2;
paulo@89	4185 if (dz * dz / d2 > δ2 \|\| abs((dx * dx2 + dy * dy2) / d2 - .5) > .3 \|\| a0 * a1 + b0 * b1 + c0 * c1 < cosMinDistance) {
paulo@89	4186 resampleLineTo(x0, y0, λ0, a0, b0, c0, x2, y2, λ2, a /= m, b /= m, c, depth, stream);
paulo@89	4187 stream.point(x2, y2);
paulo@89	4188 resampleLineTo(x2, y2, λ2, a, b, c, x1, y1, λ1, a1, b1, c1, depth, stream);
paulo@89	4189 }
paulo@89	4190 }
paulo@89	4191 }
paulo@89	4192 resample.precision = function(_) {
paulo@89	4193 if (!arguments.length) return Math.sqrt(δ2);
paulo@89	4194 maxDepth = (δ2 = _ * _) > 0 && 16;
paulo@89	4195 return resample;
paulo@89	4196 };
paulo@89	4197 return resample;
paulo@89	4198 }
paulo@89	4199 d3.geo.path = function() {
paulo@89	4200 var pointRadius = 4.5, projection, context, projectStream, contextStream, cacheStream;
paulo@89	4201 function path(object) {
paulo@89	4202 if (object) {
paulo@89	4203 if (typeof pointRadius === "function") contextStream.pointRadius(+pointRadius.apply(this, arguments));
paulo@89	4204 if (!cacheStream \|\| !cacheStream.valid) cacheStream = projectStream(contextStream);
paulo@89	4205 d3.geo.stream(object, cacheStream);
paulo@89	4206 }
paulo@89	4207 return contextStream.result();
paulo@89	4208 }
paulo@89	4209 path.area = function(object) {
paulo@89	4210 d3_geo_pathAreaSum = 0;
paulo@89	4211 d3.geo.stream(object, projectStream(d3_geo_pathArea));
paulo@89	4212 return d3_geo_pathAreaSum;
paulo@89	4213 };
paulo@89	4214 path.centroid = function(object) {
paulo@89	4215 d3_geo_centroidX0 = d3_geo_centroidY0 = d3_geo_centroidZ0 = d3_geo_centroidX1 = d3_geo_centroidY1 = d3_geo_centroidZ1 = d3_geo_centroidX2 = d3_geo_centroidY2 = d3_geo_centroidZ2 = 0;
paulo@89	4216 d3.geo.stream(object, projectStream(d3_geo_pathCentroid));
paulo@89	4217 return d3_geo_centroidZ2 ? [ d3_geo_centroidX2 / d3_geo_centroidZ2, d3_geo_centroidY2 / d3_geo_centroidZ2 ] : d3_geo_centroidZ1 ? [ d3_geo_centroidX1 / d3_geo_centroidZ1, d3_geo_centroidY1 / d3_geo_centroidZ1 ] : d3_geo_centroidZ0 ? [ d3_geo_centroidX0 / d3_geo_centroidZ0, d3_geo_centroidY0 / d3_geo_centroidZ0 ] : [ NaN, NaN ];
paulo@89	4218 };
paulo@89	4219 path.bounds = function(object) {
paulo@89	4220 d3_geo_pathBoundsX1 = d3_geo_pathBoundsY1 = -(d3_geo_pathBoundsX0 = d3_geo_pathBoundsY0 = Infinity);
paulo@89	4221 d3.geo.stream(object, projectStream(d3_geo_pathBounds));
paulo@89	4222 return [ [ d3_geo_pathBoundsX0, d3_geo_pathBoundsY0 ], [ d3_geo_pathBoundsX1, d3_geo_pathBoundsY1 ] ];
paulo@89	4223 };
paulo@89	4224 path.projection = function(_) {
paulo@89	4225 if (!arguments.length) return projection;
paulo@89	4226 projectStream = (projection = _) ? _.stream \|\| d3_geo_pathProjectStream(_) : d3_identity;
paulo@89	4227 return reset();
paulo@89	4228 };
paulo@89	4229 path.context = function(_) {
paulo@89	4230 if (!arguments.length) return context;
paulo@89	4231 contextStream = (context = _) == null ? new d3_geo_pathBuffer() : new d3_geo_pathContext(_);
paulo@89	4232 if (typeof pointRadius !== "function") contextStream.pointRadius(pointRadius);
paulo@89	4233 return reset();
paulo@89	4234 };
paulo@89	4235 path.pointRadius = function(_) {
paulo@89	4236 if (!arguments.length) return pointRadius;
paulo@89	4237 pointRadius = typeof _ === "function" ? _ : (contextStream.pointRadius(+_), +_);
paulo@89	4238 return path;
paulo@89	4239 };
paulo@89	4240 function reset() {
paulo@89	4241 cacheStream = null;
paulo@89	4242 return path;
paulo@89	4243 }
paulo@89	4244 return path.projection(d3.geo.albersUsa()).context(null);
paulo@89	4245 };
paulo@89	4246 function d3_geo_pathProjectStream(project) {
paulo@89	4247 var resample = d3_geo_resample(function(x, y) {
paulo@89	4248 return project([ x * d3_degrees, y * d3_degrees ]);
paulo@89	4249 });
paulo@89	4250 return function(stream) {
paulo@89	4251 return d3_geo_projectionRadians(resample(stream));
paulo@89	4252 };
paulo@89	4253 }
paulo@89	4254 d3.geo.transform = function(methods) {
paulo@89	4255 return {
paulo@89	4256 stream: function(stream) {
paulo@89	4257 var transform = new d3_geo_transform(stream);
paulo@89	4258 for (var k in methods) transform[k] = methods[k];
paulo@89	4259 return transform;
paulo@89	4260 }
paulo@89	4261 };
paulo@89	4262 };
paulo@89	4263 function d3_geo_transform(stream) {
paulo@89	4264 this.stream = stream;
paulo@89	4265 }
paulo@89	4266 d3_geo_transform.prototype = {
paulo@89	4267 point: function(x, y) {
paulo@89	4268 this.stream.point(x, y);
paulo@89	4269 },
paulo@89	4270 sphere: function() {
paulo@89	4271 this.stream.sphere();
paulo@89	4272 },
paulo@89	4273 lineStart: function() {
paulo@89	4274 this.stream.lineStart();
paulo@89	4275 },
paulo@89	4276 lineEnd: function() {
paulo@89	4277 this.stream.lineEnd();
paulo@89	4278 },
paulo@89	4279 polygonStart: function() {
paulo@89	4280 this.stream.polygonStart();
paulo@89	4281 },
paulo@89	4282 polygonEnd: function() {
paulo@89	4283 this.stream.polygonEnd();
paulo@89	4284 }
paulo@89	4285 };
paulo@89	4286 function d3_geo_transformPoint(stream, point) {
paulo@89	4287 return {
paulo@89	4288 point: point,
paulo@89	4289 sphere: function() {
paulo@89	4290 stream.sphere();
paulo@89	4291 },
paulo@89	4292 lineStart: function() {
paulo@89	4293 stream.lineStart();
paulo@89	4294 },
paulo@89	4295 lineEnd: function() {
paulo@89	4296 stream.lineEnd();
paulo@89	4297 },
paulo@89	4298 polygonStart: function() {
paulo@89	4299 stream.polygonStart();
paulo@89	4300 },
paulo@89	4301 polygonEnd: function() {
paulo@89	4302 stream.polygonEnd();
paulo@89	4303 }
paulo@89	4304 };
paulo@89	4305 }
paulo@89	4306 d3.geo.projection = d3_geo_projection;
paulo@89	4307 d3.geo.projectionMutator = d3_geo_projectionMutator;
paulo@89	4308 function d3_geo_projection(project) {
paulo@89	4309 return d3_geo_projectionMutator(function() {
paulo@89	4310 return project;
paulo@89	4311 })();
paulo@89	4312 }
paulo@89	4313 function d3_geo_projectionMutator(projectAt) {
paulo@89	4314 var project, rotate, projectRotate, projectResample = d3_geo_resample(function(x, y) {
paulo@89	4315 x = project(x, y);
paulo@89	4316 return [ x[0] * k + δx, δy - x[1] * k ];
paulo@89	4317 }), k = 150, x = 480, y = 250, λ = 0, φ = 0, δλ = 0, δφ = 0, δγ = 0, δx, δy, preclip = d3_geo_clipAntimeridian, postclip = d3_identity, clipAngle = null, clipExtent = null, stream;
paulo@89	4318 function projection(point) {
paulo@89	4319 point = projectRotate(point[0] * d3_radians, point[1] * d3_radians);
paulo@89	4320 return [ point[0] * k + δx, δy - point[1] * k ];
paulo@89	4321 }
paulo@89	4322 function invert(point) {
paulo@89	4323 point = projectRotate.invert((point[0] - δx) / k, (δy - point[1]) / k);
paulo@89	4324 return point && [ point[0] * d3_degrees, point[1] * d3_degrees ];
paulo@89	4325 }
paulo@89	4326 projection.stream = function(output) {
paulo@89	4327 if (stream) stream.valid = false;
paulo@89	4328 stream = d3_geo_projectionRadians(preclip(rotate, projectResample(postclip(output))));
paulo@89	4329 stream.valid = true;
paulo@89	4330 return stream;
paulo@89	4331 };
paulo@89	4332 projection.clipAngle = function(_) {
paulo@89	4333 if (!arguments.length) return clipAngle;
paulo@89	4334 preclip = _ == null ? (clipAngle = _, d3_geo_clipAntimeridian) : d3_geo_clipCircle((clipAngle = +_) * d3_radians);
paulo@89	4335 return invalidate();
paulo@89	4336 };
paulo@89	4337 projection.clipExtent = function(_) {
paulo@89	4338 if (!arguments.length) return clipExtent;
paulo@89	4339 clipExtent = _;
paulo@89	4340 postclip = _ ? d3_geo_clipExtent(_[0][0], _[0][1], _[1][0], _[1][1]) : d3_identity;
paulo@89	4341 return invalidate();
paulo@89	4342 };
paulo@89	4343 projection.scale = function(_) {
paulo@89	4344 if (!arguments.length) return k;
paulo@89	4345 k = +_;
paulo@89	4346 return reset();
paulo@89	4347 };
paulo@89	4348 projection.translate = function(_) {
paulo@89	4349 if (!arguments.length) return [ x, y ];
paulo@89	4350 x = +_[0];
paulo@89	4351 y = +_[1];
paulo@89	4352 return reset();
paulo@89	4353 };
paulo@89	4354 projection.center = function(_) {
paulo@89	4355 if (!arguments.length) return [ λ * d3_degrees, φ * d3_degrees ];
paulo@89	4356 λ = _[0] % 360 * d3_radians;
paulo@89	4357 φ = _[1] % 360 * d3_radians;
paulo@89	4358 return reset();
paulo@89	4359 };
paulo@89	4360 projection.rotate = function(_) {
paulo@89	4361 if (!arguments.length) return [ δλ * d3_degrees, δφ * d3_degrees, δγ * d3_degrees ];
paulo@89	4362 δλ = _[0] % 360 * d3_radians;
paulo@89	4363 δφ = _[1] % 360 * d3_radians;
paulo@89	4364 δγ = _.length > 2 ? _[2] % 360 * d3_radians : 0;
paulo@89	4365 return reset();
paulo@89	4366 };
paulo@89	4367 d3.rebind(projection, projectResample, "precision");
paulo@89	4368 function reset() {
paulo@89	4369 projectRotate = d3_geo_compose(rotate = d3_geo_rotation(δλ, δφ, δγ), project);
paulo@89	4370 var center = project(λ, φ);
paulo@89	4371 δx = x - center[0] * k;
paulo@89	4372 δy = y + center[1] * k;
paulo@89	4373 return invalidate();
paulo@89	4374 }
paulo@89	4375 function invalidate() {
paulo@89	4376 if (stream) stream.valid = false, stream = null;
paulo@89	4377 return projection;
paulo@89	4378 }
paulo@89	4379 return function() {
paulo@89	4380 project = projectAt.apply(this, arguments);
paulo@89	4381 projection.invert = project.invert && invert;
paulo@89	4382 return reset();
paulo@89	4383 };
paulo@89	4384 }
paulo@89	4385 function d3_geo_projectionRadians(stream) {
paulo@89	4386 return d3_geo_transformPoint(stream, function(x, y) {
paulo@89	4387 stream.point(x * d3_radians, y * d3_radians);
paulo@89	4388 });
paulo@89	4389 }
paulo@89	4390 function d3_geo_equirectangular(λ, φ) {
paulo@89	4391 return [ λ, φ ];
paulo@89	4392 }
paulo@89	4393 (d3.geo.equirectangular = function() {
paulo@89	4394 return d3_geo_projection(d3_geo_equirectangular);
paulo@89	4395 }).raw = d3_geo_equirectangular.invert = d3_geo_equirectangular;
paulo@89	4396 d3.geo.rotation = function(rotate) {
paulo@89	4397 rotate = d3_geo_rotation(rotate[0] % 360 * d3_radians, rotate[1] * d3_radians, rotate.length > 2 ? rotate[2] * d3_radians : 0);
paulo@89	4398 function forward(coordinates) {
paulo@89	4399 coordinates = rotate(coordinates[0] * d3_radians, coordinates[1] * d3_radians);
paulo@89	4400 return coordinates[0] = d3_degrees, coordinates[1] = d3_degrees, coordinates;
paulo@89	4401 }
paulo@89	4402 forward.invert = function(coordinates) {
paulo@89	4403 coordinates = rotate.invert(coordinates[0] * d3_radians, coordinates[1] * d3_radians);
paulo@89	4404 return coordinates[0] = d3_degrees, coordinates[1] = d3_degrees, coordinates;
paulo@89	4405 };
paulo@89	4406 return forward;
paulo@89	4407 };
paulo@89	4408 function d3_geo_identityRotation(λ, φ) {
paulo@89	4409 return [ λ > π ? λ - τ : λ < -π ? λ + τ : λ, φ ];
paulo@89	4410 }
paulo@89	4411 d3_geo_identityRotation.invert = d3_geo_equirectangular;
paulo@89	4412 function d3_geo_rotation(δλ, δφ, δγ) {
paulo@89	4413 return δλ ? δφ \|\| δγ ? d3_geo_compose(d3_geo_rotationλ(δλ), d3_geo_rotationφγ(δφ, δγ)) : d3_geo_rotationλ(δλ) : δφ \|\| δγ ? d3_geo_rotationφγ(δφ, δγ) : d3_geo_identityRotation;
paulo@89	4414 }
paulo@89	4415 function d3_geo_forwardRotationλ(δλ) {
paulo@89	4416 return function(λ, φ) {
paulo@89	4417 return λ += δλ, [ λ > π ? λ - τ : λ < -π ? λ + τ : λ, φ ];
paulo@89	4418 };
paulo@89	4419 }
paulo@89	4420 function d3_geo_rotationλ(δλ) {
paulo@89	4421 var rotation = d3_geo_forwardRotationλ(δλ);
paulo@89	4422 rotation.invert = d3_geo_forwardRotationλ(-δλ);
paulo@89	4423 return rotation;
paulo@89	4424 }
paulo@89	4425 function d3_geo_rotationφγ(δφ, δγ) {
paulo@89	4426 var cosδφ = Math.cos(δφ), sinδφ = Math.sin(δφ), cosδγ = Math.cos(δγ), sinδγ = Math.sin(δγ);
paulo@89	4427 function rotation(λ, φ) {
paulo@89	4428 var cosφ = Math.cos(φ), x = Math.cos(λ) * cosφ, y = Math.sin(λ) * cosφ, z = Math.sin(φ), k = z * cosδφ + x * sinδφ;
paulo@89	4429 return [ Math.atan2(y * cosδγ - k * sinδγ, x * cosδφ - z * sinδφ), d3_asin(k * cosδγ + y * sinδγ) ];
paulo@89	4430 }
paulo@89	4431 rotation.invert = function(λ, φ) {
paulo@89	4432 var cosφ = Math.cos(φ), x = Math.cos(λ) * cosφ, y = Math.sin(λ) * cosφ, z = Math.sin(φ), k = z * cosδγ - y * sinδγ;
paulo@89	4433 return [ Math.atan2(y * cosδγ + z * sinδγ, x * cosδφ + k * sinδφ), d3_asin(k * cosδφ - x * sinδφ) ];
paulo@89	4434 };
paulo@89	4435 return rotation;
paulo@89	4436 }
paulo@89	4437 d3.geo.circle = function() {
paulo@89	4438 var origin = [ 0, 0 ], angle, precision = 6, interpolate;
paulo@89	4439 function circle() {
paulo@89	4440 var center = typeof origin === "function" ? origin.apply(this, arguments) : origin, rotate = d3_geo_rotation(-center[0] * d3_radians, -center[1] * d3_radians, 0).invert, ring = [];
paulo@89	4441 interpolate(null, null, 1, {
paulo@89	4442 point: function(x, y) {
paulo@89	4443 ring.push(x = rotate(x, y));
paulo@89	4444 x[0] = d3_degrees, x[1] = d3_degrees;
paulo@89	4445 }
paulo@89	4446 });
paulo@89	4447 return {
paulo@89	4448 type: "Polygon",
paulo@89	4449 coordinates: [ ring ]
paulo@89	4450 };
paulo@89	4451 }
paulo@89	4452 circle.origin = function(x) {
paulo@89	4453 if (!arguments.length) return origin;
paulo@89	4454 origin = x;
paulo@89	4455 return circle;
paulo@89	4456 };
paulo@89	4457 circle.angle = function(x) {
paulo@89	4458 if (!arguments.length) return angle;
paulo@89	4459 interpolate = d3_geo_circleInterpolate((angle = +x) * d3_radians, precision * d3_radians);
paulo@89	4460 return circle;
paulo@89	4461 };
paulo@89	4462 circle.precision = function(_) {
paulo@89	4463 if (!arguments.length) return precision;
paulo@89	4464 interpolate = d3_geo_circleInterpolate(angle * d3_radians, (precision = +_) * d3_radians);
paulo@89	4465 return circle;
paulo@89	4466 };
paulo@89	4467 return circle.angle(90);
paulo@89	4468 };
paulo@89	4469 function d3_geo_circleInterpolate(radius, precision) {
paulo@89	4470 var cr = Math.cos(radius), sr = Math.sin(radius);
paulo@89	4471 return function(from, to, direction, listener) {
paulo@89	4472 var step = direction * precision;
paulo@89	4473 if (from != null) {
paulo@89	4474 from = d3_geo_circleAngle(cr, from);
paulo@89	4475 to = d3_geo_circleAngle(cr, to);
paulo@89	4476 if (direction > 0 ? from < to : from > to) from += direction * τ;
paulo@89	4477 } else {
paulo@89	4478 from = radius + direction * τ;
paulo@89	4479 to = radius - .5 * step;
paulo@89	4480 }
paulo@89	4481 for (var point, t = from; direction > 0 ? t > to : t < to; t -= step) {
paulo@89	4482 listener.point((point = d3_geo_spherical([ cr, -sr * Math.cos(t), -sr * Math.sin(t) ]))[0], point[1]);
paulo@89	4483 }
paulo@89	4484 };
paulo@89	4485 }
paulo@89	4486 function d3_geo_circleAngle(cr, point) {
paulo@89	4487 var a = d3_geo_cartesian(point);
paulo@89	4488 a[0] -= cr;
paulo@89	4489 d3_geo_cartesianNormalize(a);
paulo@89	4490 var angle = d3_acos(-a[1]);
paulo@89	4491 return ((-a[2] < 0 ? -angle : angle) + 2 * Math.PI - ε) % (2 * Math.PI);
paulo@89	4492 }
paulo@89	4493 d3.geo.distance = function(a, b) {
paulo@89	4494 var Δλ = (b[0] - a[0]) * d3_radians, φ0 = a[1] * d3_radians, φ1 = b[1] * d3_radians, sinΔλ = Math.sin(Δλ), cosΔλ = Math.cos(Δλ), sinφ0 = Math.sin(φ0), cosφ0 = Math.cos(φ0), sinφ1 = Math.sin(φ1), cosφ1 = Math.cos(φ1), t;
paulo@89	4495 return Math.atan2(Math.sqrt((t = cosφ1 * sinΔλ) * t + (t = cosφ0 * sinφ1 - sinφ0 * cosφ1 * cosΔλ) * t), sinφ0 * sinφ1 + cosφ0 * cosφ1 * cosΔλ);
paulo@89	4496 };
paulo@89	4497 d3.geo.graticule = function() {
paulo@89	4498 var x1, x0, X1, X0, y1, y0, Y1, Y0, dx = 10, dy = dx, DX = 90, DY = 360, x, y, X, Y, precision = 2.5;
paulo@89	4499 function graticule() {
paulo@89	4500 return {
paulo@89	4501 type: "MultiLineString",
paulo@89	4502 coordinates: lines()
paulo@89	4503 };
paulo@89	4504 }
paulo@89	4505 function lines() {
paulo@89	4506 return d3.range(Math.ceil(X0 / DX) * DX, X1, DX).map(X).concat(d3.range(Math.ceil(Y0 / DY) * DY, Y1, DY).map(Y)).concat(d3.range(Math.ceil(x0 / dx) * dx, x1, dx).filter(function(x) {
paulo@89	4507 return abs(x % DX) > ε;
paulo@89	4508 }).map(x)).concat(d3.range(Math.ceil(y0 / dy) * dy, y1, dy).filter(function(y) {
paulo@89	4509 return abs(y % DY) > ε;
paulo@89	4510 }).map(y));
paulo@89	4511 }
paulo@89	4512 graticule.lines = function() {
paulo@89	4513 return lines().map(function(coordinates) {
paulo@89	4514 return {
paulo@89	4515 type: "LineString",
paulo@89	4516 coordinates: coordinates
paulo@89	4517 };
paulo@89	4518 });
paulo@89	4519 };
paulo@89	4520 graticule.outline = function() {
paulo@89	4521 return {
paulo@89	4522 type: "Polygon",
paulo@89	4523 coordinates: [ X(X0).concat(Y(Y1).slice(1), X(X1).reverse().slice(1), Y(Y0).reverse().slice(1)) ]
paulo@89	4524 };
paulo@89	4525 };
paulo@89	4526 graticule.extent = function(_) {
paulo@89	4527 if (!arguments.length) return graticule.minorExtent();
paulo@89	4528 return graticule.majorExtent(_).minorExtent(_);
paulo@89	4529 };
paulo@89	4530 graticule.majorExtent = function(_) {
paulo@89	4531 if (!arguments.length) return [ [ X0, Y0 ], [ X1, Y1 ] ];
paulo@89	4532 X0 = +_[0][0], X1 = +_[1][0];
paulo@89	4533 Y0 = +_[0][1], Y1 = +_[1][1];
paulo@89	4534 if (X0 > X1) _ = X0, X0 = X1, X1 = _;
paulo@89	4535 if (Y0 > Y1) _ = Y0, Y0 = Y1, Y1 = _;
paulo@89	4536 return graticule.precision(precision);
paulo@89	4537 };
paulo@89	4538 graticule.minorExtent = function(_) {
paulo@89	4539 if (!arguments.length) return [ [ x0, y0 ], [ x1, y1 ] ];
paulo@89	4540 x0 = +_[0][0], x1 = +_[1][0];
paulo@89	4541 y0 = +_[0][1], y1 = +_[1][1];
paulo@89	4542 if (x0 > x1) _ = x0, x0 = x1, x1 = _;
paulo@89	4543 if (y0 > y1) _ = y0, y0 = y1, y1 = _;
paulo@89	4544 return graticule.precision(precision);
paulo@89	4545 };
paulo@89	4546 graticule.step = function(_) {
paulo@89	4547 if (!arguments.length) return graticule.minorStep();
paulo@89	4548 return graticule.majorStep(_).minorStep(_);
paulo@89	4549 };
paulo@89	4550 graticule.majorStep = function(_) {
paulo@89	4551 if (!arguments.length) return [ DX, DY ];
paulo@89	4552 DX = +_[0], DY = +_[1];
paulo@89	4553 return graticule;
paulo@89	4554 };
paulo@89	4555 graticule.minorStep = function(_) {
paulo@89	4556 if (!arguments.length) return [ dx, dy ];
paulo@89	4557 dx = +_[0], dy = +_[1];
paulo@89	4558 return graticule;
paulo@89	4559 };
paulo@89	4560 graticule.precision = function(_) {
paulo@89	4561 if (!arguments.length) return precision;
paulo@89	4562 precision = +_;
paulo@89	4563 x = d3_geo_graticuleX(y0, y1, 90);
paulo@89	4564 y = d3_geo_graticuleY(x0, x1, precision);
paulo@89	4565 X = d3_geo_graticuleX(Y0, Y1, 90);
paulo@89	4566 Y = d3_geo_graticuleY(X0, X1, precision);
paulo@89	4567 return graticule;
paulo@89	4568 };
paulo@89	4569 return graticule.majorExtent([ [ -180, -90 + ε ], [ 180, 90 - ε ] ]).minorExtent([ [ -180, -80 - ε ], [ 180, 80 + ε ] ]);
paulo@89	4570 };
paulo@89	4571 function d3_geo_graticuleX(y0, y1, dy) {
paulo@89	4572 var y = d3.range(y0, y1 - ε, dy).concat(y1);
paulo@89	4573 return function(x) {
paulo@89	4574 return y.map(function(y) {
paulo@89	4575 return [ x, y ];
paulo@89	4576 });
paulo@89	4577 };
paulo@89	4578 }
paulo@89	4579 function d3_geo_graticuleY(x0, x1, dx) {
paulo@89	4580 var x = d3.range(x0, x1 - ε, dx).concat(x1);
paulo@89	4581 return function(y) {
paulo@89	4582 return x.map(function(x) {
paulo@89	4583 return [ x, y ];
paulo@89	4584 });
paulo@89	4585 };
paulo@89	4586 }
paulo@89	4587 function d3_source(d) {
paulo@89	4588 return d.source;
paulo@89	4589 }
paulo@89	4590 function d3_target(d) {
paulo@89	4591 return d.target;
paulo@89	4592 }
paulo@89	4593 d3.geo.greatArc = function() {
paulo@89	4594 var source = d3_source, source_, target = d3_target, target_;
paulo@89	4595 function greatArc() {
paulo@89	4596 return {
paulo@89	4597 type: "LineString",
paulo@89	4598 coordinates: [ source_ \|\| source.apply(this, arguments), target_ \|\| target.apply(this, arguments) ]
paulo@89	4599 };
paulo@89	4600 }
paulo@89	4601 greatArc.distance = function() {
paulo@89	4602 return d3.geo.distance(source_ \|\| source.apply(this, arguments), target_ \|\| target.apply(this, arguments));
paulo@89	4603 };
paulo@89	4604 greatArc.source = function(_) {
paulo@89	4605 if (!arguments.length) return source;
paulo@89	4606 source = _, source_ = typeof _ === "function" ? null : _;
paulo@89	4607 return greatArc;
paulo@89	4608 };
paulo@89	4609 greatArc.target = function(_) {
paulo@89	4610 if (!arguments.length) return target;
paulo@89	4611 target = _, target_ = typeof _ === "function" ? null : _;
paulo@89	4612 return greatArc;
paulo@89	4613 };
paulo@89	4614 greatArc.precision = function() {
paulo@89	4615 return arguments.length ? greatArc : 0;
paulo@89	4616 };
paulo@89	4617 return greatArc;
paulo@89	4618 };
paulo@89	4619 d3.geo.interpolate = function(source, target) {
paulo@89	4620 return d3_geo_interpolate(source[0] * d3_radians, source[1] * d3_radians, target[0] * d3_radians, target[1] * d3_radians);
paulo@89	4621 };
paulo@89	4622 function d3_geo_interpolate(x0, y0, x1, y1) {
paulo@89	4623 var cy0 = Math.cos(y0), sy0 = Math.sin(y0), cy1 = Math.cos(y1), sy1 = Math.sin(y1), kx0 = cy0 * Math.cos(x0), ky0 = cy0 * Math.sin(x0), kx1 = cy1 * Math.cos(x1), ky1 = cy1 * Math.sin(x1), d = 2 * Math.asin(Math.sqrt(d3_haversin(y1 - y0) + cy0 * cy1 * d3_haversin(x1 - x0))), k = 1 / Math.sin(d);
paulo@89	4624 var interpolate = d ? function(t) {
paulo@89	4625 var B = Math.sin(t = d) k, A = Math.sin(d - t) * k, x = A * kx0 + B * kx1, y = A * ky0 + B * ky1, z = A * sy0 + B * sy1;
paulo@89	4626 return [ Math.atan2(y, x) * d3_degrees, Math.atan2(z, Math.sqrt(x * x + y * y)) * d3_degrees ];
paulo@89	4627 } : function() {
paulo@89	4628 return [ x0 * d3_degrees, y0 * d3_degrees ];
paulo@89	4629 };
paulo@89	4630 interpolate.distance = d;
paulo@89	4631 return interpolate;
paulo@89	4632 }
paulo@89	4633 d3.geo.length = function(object) {
paulo@89	4634 d3_geo_lengthSum = 0;
paulo@89	4635 d3.geo.stream(object, d3_geo_length);
paulo@89	4636 return d3_geo_lengthSum;
paulo@89	4637 };
paulo@89	4638 var d3_geo_lengthSum;
paulo@89	4639 var d3_geo_length = {
paulo@89	4640 sphere: d3_noop,
paulo@89	4641 point: d3_noop,
paulo@89	4642 lineStart: d3_geo_lengthLineStart,
paulo@89	4643 lineEnd: d3_noop,
paulo@89	4644 polygonStart: d3_noop,
paulo@89	4645 polygonEnd: d3_noop
paulo@89	4646 };
paulo@89	4647 function d3_geo_lengthLineStart() {
paulo@89	4648 var λ0, sinφ0, cosφ0;
paulo@89	4649 d3_geo_length.point = function(λ, φ) {
paulo@89	4650 λ0 = λ * d3_radians, sinφ0 = Math.sin(φ *= d3_radians), cosφ0 = Math.cos(φ);
paulo@89	4651 d3_geo_length.point = nextPoint;
paulo@89	4652 };
paulo@89	4653 d3_geo_length.lineEnd = function() {
paulo@89	4654 d3_geo_length.point = d3_geo_length.lineEnd = d3_noop;
paulo@89	4655 };
paulo@89	4656 function nextPoint(λ, φ) {
paulo@89	4657 var sinφ = Math.sin(φ = d3_radians), cosφ = Math.cos(φ), t = abs((λ = d3_radians) - λ0), cosΔλ = Math.cos(t);
paulo@89	4658 d3_geo_lengthSum += Math.atan2(Math.sqrt((t = cosφ * Math.sin(t)) * t + (t = cosφ0 * sinφ - sinφ0 * cosφ * cosΔλ) * t), sinφ0 * sinφ + cosφ0 * cosφ * cosΔλ);
paulo@89	4659 λ0 = λ, sinφ0 = sinφ, cosφ0 = cosφ;
paulo@89	4660 }
paulo@89	4661 }
paulo@89	4662 function d3_geo_azimuthal(scale, angle) {
paulo@89	4663 function azimuthal(λ, φ) {
paulo@89	4664 var cosλ = Math.cos(λ), cosφ = Math.cos(φ), k = scale(cosλ * cosφ);
paulo@89	4665 return [ k * cosφ * Math.sin(λ), k * Math.sin(φ) ];
paulo@89	4666 }
paulo@89	4667 azimuthal.invert = function(x, y) {
paulo@89	4668 var ρ = Math.sqrt(x * x + y * y), c = angle(ρ), sinc = Math.sin(c), cosc = Math.cos(c);
paulo@89	4669 return [ Math.atan2(x * sinc, ρ * cosc), Math.asin(ρ && y * sinc / ρ) ];
paulo@89	4670 };
paulo@89	4671 return azimuthal;
paulo@89	4672 }
paulo@89	4673 var d3_geo_azimuthalEqualArea = d3_geo_azimuthal(function(cosλcosφ) {
paulo@89	4674 return Math.sqrt(2 / (1 + cosλcosφ));
paulo@89	4675 }, function(ρ) {
paulo@89	4676 return 2 * Math.asin(ρ / 2);
paulo@89	4677 });
paulo@89	4678 (d3.geo.azimuthalEqualArea = function() {
paulo@89	4679 return d3_geo_projection(d3_geo_azimuthalEqualArea);
paulo@89	4680 }).raw = d3_geo_azimuthalEqualArea;
paulo@89	4681 var d3_geo_azimuthalEquidistant = d3_geo_azimuthal(function(cosλcosφ) {
paulo@89	4682 var c = Math.acos(cosλcosφ);
paulo@89	4683 return c && c / Math.sin(c);
paulo@89	4684 }, d3_identity);
paulo@89	4685 (d3.geo.azimuthalEquidistant = function() {
paulo@89	4686 return d3_geo_projection(d3_geo_azimuthalEquidistant);
paulo@89	4687 }).raw = d3_geo_azimuthalEquidistant;
paulo@89	4688 function d3_geo_conicConformal(φ0, φ1) {
paulo@89	4689 var cosφ0 = Math.cos(φ0), t = function(φ) {
paulo@89	4690 return Math.tan(π / 4 + φ / 2);
paulo@89	4691 }, n = φ0 === φ1 ? Math.sin(φ0) : Math.log(cosφ0 / Math.cos(φ1)) / Math.log(t(φ1) / t(φ0)), F = cosφ0 * Math.pow(t(φ0), n) / n;
paulo@89	4692 if (!n) return d3_geo_mercator;
paulo@89	4693 function forward(λ, φ) {
paulo@89	4694 if (F > 0) {
paulo@89	4695 if (φ < -halfπ + ε) φ = -halfπ + ε;
paulo@89	4696 } else {
paulo@89	4697 if (φ > halfπ - ε) φ = halfπ - ε;
paulo@89	4698 }
paulo@89	4699 var ρ = F / Math.pow(t(φ), n);
paulo@89	4700 return [ ρ * Math.sin(n * λ), F - ρ * Math.cos(n * λ) ];
paulo@89	4701 }
paulo@89	4702 forward.invert = function(x, y) {
paulo@89	4703 var ρ0_y = F - y, ρ = d3_sgn(n) * Math.sqrt(x * x + ρ0_y * ρ0_y);
paulo@89	4704 return [ Math.atan2(x, ρ0_y) / n, 2 * Math.atan(Math.pow(F / ρ, 1 / n)) - halfπ ];
paulo@89	4705 };
paulo@89	4706 return forward;
paulo@89	4707 }
paulo@89	4708 (d3.geo.conicConformal = function() {
paulo@89	4709 return d3_geo_conic(d3_geo_conicConformal);
paulo@89	4710 }).raw = d3_geo_conicConformal;
paulo@89	4711 function d3_geo_conicEquidistant(φ0, φ1) {
paulo@89	4712 var cosφ0 = Math.cos(φ0), n = φ0 === φ1 ? Math.sin(φ0) : (cosφ0 - Math.cos(φ1)) / (φ1 - φ0), G = cosφ0 / n + φ0;
paulo@89	4713 if (abs(n) < ε) return d3_geo_equirectangular;
paulo@89	4714 function forward(λ, φ) {
paulo@89	4715 var ρ = G - φ;
paulo@89	4716 return [ ρ * Math.sin(n * λ), G - ρ * Math.cos(n * λ) ];
paulo@89	4717 }
paulo@89	4718 forward.invert = function(x, y) {
paulo@89	4719 var ρ0_y = G - y;
paulo@89	4720 return [ Math.atan2(x, ρ0_y) / n, G - d3_sgn(n) * Math.sqrt(x * x + ρ0_y * ρ0_y) ];
paulo@89	4721 };
paulo@89	4722 return forward;
paulo@89	4723 }
paulo@89	4724 (d3.geo.conicEquidistant = function() {
paulo@89	4725 return d3_geo_conic(d3_geo_conicEquidistant);
paulo@89	4726 }).raw = d3_geo_conicEquidistant;
paulo@89	4727 var d3_geo_gnomonic = d3_geo_azimuthal(function(cosλcosφ) {
paulo@89	4728 return 1 / cosλcosφ;
paulo@89	4729 }, Math.atan);
paulo@89	4730 (d3.geo.gnomonic = function() {
paulo@89	4731 return d3_geo_projection(d3_geo_gnomonic);
paulo@89	4732 }).raw = d3_geo_gnomonic;
paulo@89	4733 function d3_geo_mercator(λ, φ) {
paulo@89	4734 return [ λ, Math.log(Math.tan(π / 4 + φ / 2)) ];
paulo@89	4735 }
paulo@89	4736 d3_geo_mercator.invert = function(x, y) {
paulo@89	4737 return [ x, 2 * Math.atan(Math.exp(y)) - halfπ ];
paulo@89	4738 };
paulo@89	4739 function d3_geo_mercatorProjection(project) {
paulo@89	4740 var m = d3_geo_projection(project), scale = m.scale, translate = m.translate, clipExtent = m.clipExtent, clipAuto;
paulo@89	4741 m.scale = function() {
paulo@89	4742 var v = scale.apply(m, arguments);
paulo@89	4743 return v === m ? clipAuto ? m.clipExtent(null) : m : v;
paulo@89	4744 };
paulo@89	4745 m.translate = function() {
paulo@89	4746 var v = translate.apply(m, arguments);
paulo@89	4747 return v === m ? clipAuto ? m.clipExtent(null) : m : v;
paulo@89	4748 };
paulo@89	4749 m.clipExtent = function(_) {
paulo@89	4750 var v = clipExtent.apply(m, arguments);
paulo@89	4751 if (v === m) {
paulo@89	4752 if (clipAuto = _ == null) {
paulo@89	4753 var k = π * scale(), t = translate();
paulo@89	4754 clipExtent([ [ t[0] - k, t[1] - k ], [ t[0] + k, t[1] + k ] ]);
paulo@89	4755 }
paulo@89	4756 } else if (clipAuto) {
paulo@89	4757 v = null;
paulo@89	4758 }
paulo@89	4759 return v;
paulo@89	4760 };
paulo@89	4761 return m.clipExtent(null);
paulo@89	4762 }
paulo@89	4763 (d3.geo.mercator = function() {
paulo@89	4764 return d3_geo_mercatorProjection(d3_geo_mercator);
paulo@89	4765 }).raw = d3_geo_mercator;
paulo@89	4766 var d3_geo_orthographic = d3_geo_azimuthal(function() {
paulo@89	4767 return 1;
paulo@89	4768 }, Math.asin);
paulo@89	4769 (d3.geo.orthographic = function() {
paulo@89	4770 return d3_geo_projection(d3_geo_orthographic);
paulo@89	4771 }).raw = d3_geo_orthographic;
paulo@89	4772 var d3_geo_stereographic = d3_geo_azimuthal(function(cosλcosφ) {
paulo@89	4773 return 1 / (1 + cosλcosφ);
paulo@89	4774 }, function(ρ) {
paulo@89	4775 return 2 * Math.atan(ρ);
paulo@89	4776 });
paulo@89	4777 (d3.geo.stereographic = function() {
paulo@89	4778 return d3_geo_projection(d3_geo_stereographic);
paulo@89	4779 }).raw = d3_geo_stereographic;
paulo@89	4780 function d3_geo_transverseMercator(λ, φ) {
paulo@89	4781 return [ Math.log(Math.tan(π / 4 + φ / 2)), -λ ];
paulo@89	4782 }
paulo@89	4783 d3_geo_transverseMercator.invert = function(x, y) {
paulo@89	4784 return [ -y, 2 * Math.atan(Math.exp(x)) - halfπ ];
paulo@89	4785 };
paulo@89	4786 (d3.geo.transverseMercator = function() {
paulo@89	4787 var projection = d3_geo_mercatorProjection(d3_geo_transverseMercator), center = projection.center, rotate = projection.rotate;
paulo@89	4788 projection.center = function(_) {
paulo@89	4789 return _ ? center([ -_[1], _[0] ]) : (_ = center(), [ _[1], -_[0] ]);
paulo@89	4790 };
paulo@89	4791 projection.rotate = function(_) {
paulo@89	4792 return _ ? rotate([ _[0], _[1], _.length > 2 ? _[2] + 90 : 90 ]) : (_ = rotate(),
paulo@89	4793 [ _[0], _[1], _[2] - 90 ]);
paulo@89	4794 };
paulo@89	4795 return rotate([ 0, 0, 90 ]);
paulo@89	4796 }).raw = d3_geo_transverseMercator;
paulo@89	4797 d3.geom = {};
paulo@89	4798 function d3_geom_pointX(d) {
paulo@89	4799 return d[0];
paulo@89	4800 }
paulo@89	4801 function d3_geom_pointY(d) {
paulo@89	4802 return d[1];
paulo@89	4803 }
paulo@89	4804 d3.geom.hull = function(vertices) {
paulo@89	4805 var x = d3_geom_pointX, y = d3_geom_pointY;
paulo@89	4806 if (arguments.length) return hull(vertices);
paulo@89	4807 function hull(data) {
paulo@89	4808 if (data.length < 3) return [];
paulo@89	4809 var fx = d3_functor(x), fy = d3_functor(y), i, n = data.length, points = [], flippedPoints = [];
paulo@89	4810 for (i = 0; i < n; i++) {
paulo@89	4811 points.push([ +fx.call(this, data[i], i), +fy.call(this, data[i], i), i ]);
paulo@89	4812 }
paulo@89	4813 points.sort(d3_geom_hullOrder);
paulo@89	4814 for (i = 0; i < n; i++) flippedPoints.push([ points[i][0], -points[i][1] ]);
paulo@89	4815 var upper = d3_geom_hullUpper(points), lower = d3_geom_hullUpper(flippedPoints);
paulo@89	4816 var skipLeft = lower[0] === upper[0], skipRight = lower[lower.length - 1] === upper[upper.length - 1], polygon = [];
paulo@89	4817 for (i = upper.length - 1; i >= 0; --i) polygon.push(data[points[upper[i]][2]]);
paulo@89	4818 for (i = +skipLeft; i < lower.length - skipRight; ++i) polygon.push(data[points[lower[i]][2]]);
paulo@89	4819 return polygon;
paulo@89	4820 }
paulo@89	4821 hull.x = function(_) {
paulo@89	4822 return arguments.length ? (x = _, hull) : x;
paulo@89	4823 };
paulo@89	4824 hull.y = function(_) {
paulo@89	4825 return arguments.length ? (y = _, hull) : y;
paulo@89	4826 };
paulo@89	4827 return hull;
paulo@89	4828 };
paulo@89	4829 function d3_geom_hullUpper(points) {
paulo@89	4830 var n = points.length, hull = [ 0, 1 ], hs = 2;
paulo@89	4831 for (var i = 2; i < n; i++) {
paulo@89	4832 while (hs > 1 && d3_cross2d(points[hull[hs - 2]], points[hull[hs - 1]], points[i]) <= 0) --hs;
paulo@89	4833 hull[hs++] = i;
paulo@89	4834 }
paulo@89	4835 return hull.slice(0, hs);
paulo@89	4836 }
paulo@89	4837 function d3_geom_hullOrder(a, b) {
paulo@89	4838 return a[0] - b[0] \|\| a[1] - b[1];
paulo@89	4839 }
paulo@89	4840 d3.geom.polygon = function(coordinates) {
paulo@89	4841 d3_subclass(coordinates, d3_geom_polygonPrototype);
paulo@89	4842 return coordinates;
paulo@89	4843 };
paulo@89	4844 var d3_geom_polygonPrototype = d3.geom.polygon.prototype = [];
paulo@89	4845 d3_geom_polygonPrototype.area = function() {
paulo@89	4846 var i = -1, n = this.length, a, b = this[n - 1], area = 0;
paulo@89	4847 while (++i < n) {
paulo@89	4848 a = b;
paulo@89	4849 b = this[i];
paulo@89	4850 area += a[1] * b[0] - a[0] * b[1];
paulo@89	4851 }
paulo@89	4852 return area * .5;
paulo@89	4853 };
paulo@89	4854 d3_geom_polygonPrototype.centroid = function(k) {
paulo@89	4855 var i = -1, n = this.length, x = 0, y = 0, a, b = this[n - 1], c;
paulo@89	4856 if (!arguments.length) k = -1 / (6 * this.area());
paulo@89	4857 while (++i < n) {
paulo@89	4858 a = b;
paulo@89	4859 b = this[i];
paulo@89	4860 c = a[0] * b[1] - b[0] * a[1];
paulo@89	4861 x += (a[0] + b[0]) * c;
paulo@89	4862 y += (a[1] + b[1]) * c;
paulo@89	4863 }
paulo@89	4864 return [ x * k, y * k ];
paulo@89	4865 };
paulo@89	4866 d3_geom_polygonPrototype.clip = function(subject) {
paulo@89	4867 var input, closed = d3_geom_polygonClosed(subject), i = -1, n = this.length - d3_geom_polygonClosed(this), j, m, a = this[n - 1], b, c, d;
paulo@89	4868 while (++i < n) {
paulo@89	4869 input = subject.slice();
paulo@89	4870 subject.length = 0;
paulo@89	4871 b = this[i];
paulo@89	4872 c = input[(m = input.length - closed) - 1];
paulo@89	4873 j = -1;
paulo@89	4874 while (++j < m) {
paulo@89	4875 d = input[j];
paulo@89	4876 if (d3_geom_polygonInside(d, a, b)) {
paulo@89	4877 if (!d3_geom_polygonInside(c, a, b)) {
paulo@89	4878 subject.push(d3_geom_polygonIntersect(c, d, a, b));
paulo@89	4879 }
paulo@89	4880 subject.push(d);
paulo@89	4881 } else if (d3_geom_polygonInside(c, a, b)) {
paulo@89	4882 subject.push(d3_geom_polygonIntersect(c, d, a, b));
paulo@89	4883 }
paulo@89	4884 c = d;
paulo@89	4885 }
paulo@89	4886 if (closed) subject.push(subject[0]);
paulo@89	4887 a = b;
paulo@89	4888 }
paulo@89	4889 return subject;
paulo@89	4890 };
paulo@89	4891 function d3_geom_polygonInside(p, a, b) {
paulo@89	4892 return (b[0] - a[0]) * (p[1] - a[1]) < (b[1] - a[1]) * (p[0] - a[0]);
paulo@89	4893 }
paulo@89	4894 function d3_geom_polygonIntersect(c, d, a, b) {
paulo@89	4895 var x1 = c[0], x3 = a[0], x21 = d[0] - x1, x43 = b[0] - x3, y1 = c[1], y3 = a[1], y21 = d[1] - y1, y43 = b[1] - y3, ua = (x43 * (y1 - y3) - y43 * (x1 - x3)) / (y43 * x21 - x43 * y21);
paulo@89	4896 return [ x1 + ua * x21, y1 + ua * y21 ];
paulo@89	4897 }
paulo@89	4898 function d3_geom_polygonClosed(coordinates) {
paulo@89	4899 var a = coordinates[0], b = coordinates[coordinates.length - 1];
paulo@89	4900 return !(a[0] - b[0] \|\| a[1] - b[1]);
paulo@89	4901 }
paulo@89	4902 var d3_geom_voronoiEdges, d3_geom_voronoiCells, d3_geom_voronoiBeaches, d3_geom_voronoiBeachPool = [], d3_geom_voronoiFirstCircle, d3_geom_voronoiCircles, d3_geom_voronoiCirclePool = [];
paulo@89	4903 function d3_geom_voronoiBeach() {
paulo@89	4904 d3_geom_voronoiRedBlackNode(this);
paulo@89	4905 this.edge = this.site = this.circle = null;
paulo@89	4906 }
paulo@89	4907 function d3_geom_voronoiCreateBeach(site) {
paulo@89	4908 var beach = d3_geom_voronoiBeachPool.pop() \|\| new d3_geom_voronoiBeach();
paulo@89	4909 beach.site = site;
paulo@89	4910 return beach;
paulo@89	4911 }
paulo@89	4912 function d3_geom_voronoiDetachBeach(beach) {
paulo@89	4913 d3_geom_voronoiDetachCircle(beach);
paulo@89	4914 d3_geom_voronoiBeaches.remove(beach);
paulo@89	4915 d3_geom_voronoiBeachPool.push(beach);
paulo@89	4916 d3_geom_voronoiRedBlackNode(beach);
paulo@89	4917 }
paulo@89	4918 function d3_geom_voronoiRemoveBeach(beach) {
paulo@89	4919 var circle = beach.circle, x = circle.x, y = circle.cy, vertex = {
paulo@89	4920 x: x,
paulo@89	4921 y: y
paulo@89	4922 }, previous = beach.P, next = beach.N, disappearing = [ beach ];
paulo@89	4923 d3_geom_voronoiDetachBeach(beach);
paulo@89	4924 var lArc = previous;
paulo@89	4925 while (lArc.circle && abs(x - lArc.circle.x) < ε && abs(y - lArc.circle.cy) < ε) {
paulo@89	4926 previous = lArc.P;
paulo@89	4927 disappearing.unshift(lArc);
paulo@89	4928 d3_geom_voronoiDetachBeach(lArc);
paulo@89	4929 lArc = previous;
paulo@89	4930 }
paulo@89	4931 disappearing.unshift(lArc);
paulo@89	4932 d3_geom_voronoiDetachCircle(lArc);
paulo@89	4933 var rArc = next;
paulo@89	4934 while (rArc.circle && abs(x - rArc.circle.x) < ε && abs(y - rArc.circle.cy) < ε) {
paulo@89	4935 next = rArc.N;
paulo@89	4936 disappearing.push(rArc);
paulo@89	4937 d3_geom_voronoiDetachBeach(rArc);
paulo@89	4938 rArc = next;
paulo@89	4939 }
paulo@89	4940 disappearing.push(rArc);
paulo@89	4941 d3_geom_voronoiDetachCircle(rArc);
paulo@89	4942 var nArcs = disappearing.length, iArc;
paulo@89	4943 for (iArc = 1; iArc < nArcs; ++iArc) {
paulo@89	4944 rArc = disappearing[iArc];
paulo@89	4945 lArc = disappearing[iArc - 1];
paulo@89	4946 d3_geom_voronoiSetEdgeEnd(rArc.edge, lArc.site, rArc.site, vertex);
paulo@89	4947 }
paulo@89	4948 lArc = disappearing[0];
paulo@89	4949 rArc = disappearing[nArcs - 1];
paulo@89	4950 rArc.edge = d3_geom_voronoiCreateEdge(lArc.site, rArc.site, null, vertex);
paulo@89	4951 d3_geom_voronoiAttachCircle(lArc);
paulo@89	4952 d3_geom_voronoiAttachCircle(rArc);
paulo@89	4953 }
paulo@89	4954 function d3_geom_voronoiAddBeach(site) {
paulo@89	4955 var x = site.x, directrix = site.y, lArc, rArc, dxl, dxr, node = d3_geom_voronoiBeaches._;
paulo@89	4956 while (node) {
paulo@89	4957 dxl = d3_geom_voronoiLeftBreakPoint(node, directrix) - x;
paulo@89	4958 if (dxl > ε) node = node.L; else {
paulo@89	4959 dxr = x - d3_geom_voronoiRightBreakPoint(node, directrix);
paulo@89	4960 if (dxr > ε) {
paulo@89	4961 if (!node.R) {
paulo@89	4962 lArc = node;
paulo@89	4963 break;
paulo@89	4964 }
paulo@89	4965 node = node.R;
paulo@89	4966 } else {
paulo@89	4967 if (dxl > -ε) {
paulo@89	4968 lArc = node.P;
paulo@89	4969 rArc = node;
paulo@89	4970 } else if (dxr > -ε) {
paulo@89	4971 lArc = node;
paulo@89	4972 rArc = node.N;
paulo@89	4973 } else {
paulo@89	4974 lArc = rArc = node;
paulo@89	4975 }
paulo@89	4976 break;
paulo@89	4977 }
paulo@89	4978 }
paulo@89	4979 }
paulo@89	4980 var newArc = d3_geom_voronoiCreateBeach(site);
paulo@89	4981 d3_geom_voronoiBeaches.insert(lArc, newArc);
paulo@89	4982 if (!lArc && !rArc) return;
paulo@89	4983 if (lArc === rArc) {
paulo@89	4984 d3_geom_voronoiDetachCircle(lArc);
paulo@89	4985 rArc = d3_geom_voronoiCreateBeach(lArc.site);
paulo@89	4986 d3_geom_voronoiBeaches.insert(newArc, rArc);
paulo@89	4987 newArc.edge = rArc.edge = d3_geom_voronoiCreateEdge(lArc.site, newArc.site);
paulo@89	4988 d3_geom_voronoiAttachCircle(lArc);
paulo@89	4989 d3_geom_voronoiAttachCircle(rArc);
paulo@89	4990 return;
paulo@89	4991 }
paulo@89	4992 if (!rArc) {
paulo@89	4993 newArc.edge = d3_geom_voronoiCreateEdge(lArc.site, newArc.site);
paulo@89	4994 return;
paulo@89	4995 }
paulo@89	4996 d3_geom_voronoiDetachCircle(lArc);
paulo@89	4997 d3_geom_voronoiDetachCircle(rArc);
paulo@89	4998 var lSite = lArc.site, ax = lSite.x, ay = lSite.y, bx = site.x - ax, by = site.y - ay, rSite = rArc.site, cx = rSite.x - ax, cy = rSite.y - ay, d = 2 * (bx * cy - by * cx), hb = bx * bx + by * by, hc = cx * cx + cy * cy, vertex = {
paulo@89	4999 x: (cy * hb - by * hc) / d + ax,
paulo@89	5000 y: (bx * hc - cx * hb) / d + ay
paulo@89	5001 };
paulo@89	5002 d3_geom_voronoiSetEdgeEnd(rArc.edge, lSite, rSite, vertex);
paulo@89	5003 newArc.edge = d3_geom_voronoiCreateEdge(lSite, site, null, vertex);
paulo@89	5004 rArc.edge = d3_geom_voronoiCreateEdge(site, rSite, null, vertex);
paulo@89	5005 d3_geom_voronoiAttachCircle(lArc);
paulo@89	5006 d3_geom_voronoiAttachCircle(rArc);
paulo@89	5007 }
paulo@89	5008 function d3_geom_voronoiLeftBreakPoint(arc, directrix) {
paulo@89	5009 var site = arc.site, rfocx = site.x, rfocy = site.y, pby2 = rfocy - directrix;
paulo@89	5010 if (!pby2) return rfocx;
paulo@89	5011 var lArc = arc.P;
paulo@89	5012 if (!lArc) return -Infinity;
paulo@89	5013 site = lArc.site;
paulo@89	5014 var lfocx = site.x, lfocy = site.y, plby2 = lfocy - directrix;
paulo@89	5015 if (!plby2) return lfocx;
paulo@89	5016 var hl = lfocx - rfocx, aby2 = 1 / pby2 - 1 / plby2, b = hl / plby2;
paulo@89	5017 if (aby2) return (-b + Math.sqrt(b * b - 2 * aby2 * (hl * hl / (-2 * plby2) - lfocy + plby2 / 2 + rfocy - pby2 / 2))) / aby2 + rfocx;
paulo@89	5018 return (rfocx + lfocx) / 2;
paulo@89	5019 }
paulo@89	5020 function d3_geom_voronoiRightBreakPoint(arc, directrix) {
paulo@89	5021 var rArc = arc.N;
paulo@89	5022 if (rArc) return d3_geom_voronoiLeftBreakPoint(rArc, directrix);
paulo@89	5023 var site = arc.site;
paulo@89	5024 return site.y === directrix ? site.x : Infinity;
paulo@89	5025 }
paulo@89	5026 function d3_geom_voronoiCell(site) {
paulo@89	5027 this.site = site;
paulo@89	5028 this.edges = [];
paulo@89	5029 }
paulo@89	5030 d3_geom_voronoiCell.prototype.prepare = function() {
paulo@89	5031 var halfEdges = this.edges, iHalfEdge = halfEdges.length, edge;
paulo@89	5032 while (iHalfEdge--) {
paulo@89	5033 edge = halfEdges[iHalfEdge].edge;
paulo@89	5034 if (!edge.b \|\| !edge.a) halfEdges.splice(iHalfEdge, 1);
paulo@89	5035 }
paulo@89	5036 halfEdges.sort(d3_geom_voronoiHalfEdgeOrder);
paulo@89	5037 return halfEdges.length;
paulo@89	5038 };
paulo@89	5039 function d3_geom_voronoiCloseCells(extent) {
paulo@89	5040 var x0 = extent[0][0], x1 = extent[1][0], y0 = extent[0][1], y1 = extent[1][1], x2, y2, x3, y3, cells = d3_geom_voronoiCells, iCell = cells.length, cell, iHalfEdge, halfEdges, nHalfEdges, start, end;
paulo@89	5041 while (iCell--) {
paulo@89	5042 cell = cells[iCell];
paulo@89	5043 if (!cell \|\| !cell.prepare()) continue;
paulo@89	5044 halfEdges = cell.edges;
paulo@89	5045 nHalfEdges = halfEdges.length;
paulo@89	5046 iHalfEdge = 0;
paulo@89	5047 while (iHalfEdge < nHalfEdges) {
paulo@89	5048 end = halfEdges[iHalfEdge].end(), x3 = end.x, y3 = end.y;
paulo@89	5049 start = halfEdges[++iHalfEdge % nHalfEdges].start(), x2 = start.x, y2 = start.y;
paulo@89	5050 if (abs(x3 - x2) > ε \|\| abs(y3 - y2) > ε) {
paulo@89	5051 halfEdges.splice(iHalfEdge, 0, new d3_geom_voronoiHalfEdge(d3_geom_voronoiCreateBorderEdge(cell.site, end, abs(x3 - x0) < ε && y1 - y3 > ε ? {
paulo@89	5052 x: x0,
paulo@89	5053 y: abs(x2 - x0) < ε ? y2 : y1
paulo@89	5054 } : abs(y3 - y1) < ε && x1 - x3 > ε ? {
paulo@89	5055 x: abs(y2 - y1) < ε ? x2 : x1,
paulo@89	5056 y: y1
paulo@89	5057 } : abs(x3 - x1) < ε && y3 - y0 > ε ? {
paulo@89	5058 x: x1,
paulo@89	5059 y: abs(x2 - x1) < ε ? y2 : y0
paulo@89	5060 } : abs(y3 - y0) < ε && x3 - x0 > ε ? {
paulo@89	5061 x: abs(y2 - y0) < ε ? x2 : x0,
paulo@89	5062 y: y0
paulo@89	5063 } : null), cell.site, null));
paulo@89	5064 ++nHalfEdges;
paulo@89	5065 }
paulo@89	5066 }
paulo@89	5067 }
paulo@89	5068 }
paulo@89	5069 function d3_geom_voronoiHalfEdgeOrder(a, b) {
paulo@89	5070 return b.angle - a.angle;
paulo@89	5071 }
paulo@89	5072 function d3_geom_voronoiCircle() {
paulo@89	5073 d3_geom_voronoiRedBlackNode(this);
paulo@89	5074 this.x = this.y = this.arc = this.site = this.cy = null;
paulo@89	5075 }
paulo@89	5076 function d3_geom_voronoiAttachCircle(arc) {
paulo@89	5077 var lArc = arc.P, rArc = arc.N;
paulo@89	5078 if (!lArc \|\| !rArc) return;
paulo@89	5079 var lSite = lArc.site, cSite = arc.site, rSite = rArc.site;
paulo@89	5080 if (lSite === rSite) return;
paulo@89	5081 var bx = cSite.x, by = cSite.y, ax = lSite.x - bx, ay = lSite.y - by, cx = rSite.x - bx, cy = rSite.y - by;
paulo@89	5082 var d = 2 * (ax * cy - ay * cx);
paulo@89	5083 if (d >= -ε2) return;
paulo@89	5084 var ha = ax * ax + ay * ay, hc = cx * cx + cy * cy, x = (cy * ha - ay * hc) / d, y = (ax * hc - cx * ha) / d, cy = y + by;
paulo@89	5085 var circle = d3_geom_voronoiCirclePool.pop() \|\| new d3_geom_voronoiCircle();
paulo@89	5086 circle.arc = arc;
paulo@89	5087 circle.site = cSite;
paulo@89	5088 circle.x = x + bx;
paulo@89	5089 circle.y = cy + Math.sqrt(x * x + y * y);
paulo@89	5090 circle.cy = cy;
paulo@89	5091 arc.circle = circle;
paulo@89	5092 var before = null, node = d3_geom_voronoiCircles._;
paulo@89	5093 while (node) {
paulo@89	5094 if (circle.y < node.y \|\| circle.y === node.y && circle.x <= node.x) {
paulo@89	5095 if (node.L) node = node.L; else {
paulo@89	5096 before = node.P;
paulo@89	5097 break;
paulo@89	5098 }
paulo@89	5099 } else {
paulo@89	5100 if (node.R) node = node.R; else {
paulo@89	5101 before = node;
paulo@89	5102 break;
paulo@89	5103 }
paulo@89	5104 }
paulo@89	5105 }
paulo@89	5106 d3_geom_voronoiCircles.insert(before, circle);
paulo@89	5107 if (!before) d3_geom_voronoiFirstCircle = circle;
paulo@89	5108 }
paulo@89	5109 function d3_geom_voronoiDetachCircle(arc) {
paulo@89	5110 var circle = arc.circle;
paulo@89	5111 if (circle) {
paulo@89	5112 if (!circle.P) d3_geom_voronoiFirstCircle = circle.N;
paulo@89	5113 d3_geom_voronoiCircles.remove(circle);
paulo@89	5114 d3_geom_voronoiCirclePool.push(circle);
paulo@89	5115 d3_geom_voronoiRedBlackNode(circle);
paulo@89	5116 arc.circle = null;
paulo@89	5117 }
paulo@89	5118 }
paulo@89	5119 function d3_geom_voronoiClipEdges(extent) {
paulo@89	5120 var edges = d3_geom_voronoiEdges, clip = d3_geom_clipLine(extent[0][0], extent[0][1], extent[1][0], extent[1][1]), i = edges.length, e;
paulo@89	5121 while (i--) {
paulo@89	5122 e = edges[i];
paulo@89	5123 if (!d3_geom_voronoiConnectEdge(e, extent) \|\| !clip(e) \|\| abs(e.a.x - e.b.x) < ε && abs(e.a.y - e.b.y) < ε) {
paulo@89	5124 e.a = e.b = null;
paulo@89	5125 edges.splice(i, 1);
paulo@89	5126 }
paulo@89	5127 }
paulo@89	5128 }
paulo@89	5129 function d3_geom_voronoiConnectEdge(edge, extent) {
paulo@89	5130 var vb = edge.b;
paulo@89	5131 if (vb) return true;
paulo@89	5132 var va = edge.a, x0 = extent[0][0], x1 = extent[1][0], y0 = extent[0][1], y1 = extent[1][1], lSite = edge.l, rSite = edge.r, lx = lSite.x, ly = lSite.y, rx = rSite.x, ry = rSite.y, fx = (lx + rx) / 2, fy = (ly + ry) / 2, fm, fb;
paulo@89	5133 if (ry === ly) {
paulo@89	5134 if (fx < x0 \|\| fx >= x1) return;
paulo@89	5135 if (lx > rx) {
paulo@89	5136 if (!va) va = {
paulo@89	5137 x: fx,
paulo@89	5138 y: y0
paulo@89	5139 }; else if (va.y >= y1) return;
paulo@89	5140 vb = {
paulo@89	5141 x: fx,
paulo@89	5142 y: y1
paulo@89	5143 };
paulo@89	5144 } else {
paulo@89	5145 if (!va) va = {
paulo@89	5146 x: fx,
paulo@89	5147 y: y1
paulo@89	5148 }; else if (va.y < y0) return;
paulo@89	5149 vb = {
paulo@89	5150 x: fx,
paulo@89	5151 y: y0
paulo@89	5152 };
paulo@89	5153 }
paulo@89	5154 } else {
paulo@89	5155 fm = (lx - rx) / (ry - ly);
paulo@89	5156 fb = fy - fm * fx;
paulo@89	5157 if (fm < -1 \|\| fm > 1) {
paulo@89	5158 if (lx > rx) {
paulo@89	5159 if (!va) va = {
paulo@89	5160 x: (y0 - fb) / fm,
paulo@89	5161 y: y0
paulo@89	5162 }; else if (va.y >= y1) return;
paulo@89	5163 vb = {
paulo@89	5164 x: (y1 - fb) / fm,
paulo@89	5165 y: y1
paulo@89	5166 };
paulo@89	5167 } else {
paulo@89	5168 if (!va) va = {
paulo@89	5169 x: (y1 - fb) / fm,
paulo@89	5170 y: y1
paulo@89	5171 }; else if (va.y < y0) return;
paulo@89	5172 vb = {
paulo@89	5173 x: (y0 - fb) / fm,
paulo@89	5174 y: y0
paulo@89	5175 };
paulo@89	5176 }
paulo@89	5177 } else {
paulo@89	5178 if (ly < ry) {
paulo@89	5179 if (!va) va = {
paulo@89	5180 x: x0,
paulo@89	5181 y: fm * x0 + fb
paulo@89	5182 }; else if (va.x >= x1) return;
paulo@89	5183 vb = {
paulo@89	5184 x: x1,
paulo@89	5185 y: fm * x1 + fb
paulo@89	5186 };
paulo@89	5187 } else {
paulo@89	5188 if (!va) va = {
paulo@89	5189 x: x1,
paulo@89	5190 y: fm * x1 + fb
paulo@89	5191 }; else if (va.x < x0) return;
paulo@89	5192 vb = {
paulo@89	5193 x: x0,
paulo@89	5194 y: fm * x0 + fb
paulo@89	5195 };
paulo@89	5196 }
paulo@89	5197 }
paulo@89	5198 }
paulo@89	5199 edge.a = va;
paulo@89	5200 edge.b = vb;
paulo@89	5201 return true;
paulo@89	5202 }
paulo@89	5203 function d3_geom_voronoiEdge(lSite, rSite) {
paulo@89	5204 this.l = lSite;
paulo@89	5205 this.r = rSite;
paulo@89	5206 this.a = this.b = null;
paulo@89	5207 }
paulo@89	5208 function d3_geom_voronoiCreateEdge(lSite, rSite, va, vb) {
paulo@89	5209 var edge = new d3_geom_voronoiEdge(lSite, rSite);
paulo@89	5210 d3_geom_voronoiEdges.push(edge);
paulo@89	5211 if (va) d3_geom_voronoiSetEdgeEnd(edge, lSite, rSite, va);
paulo@89	5212 if (vb) d3_geom_voronoiSetEdgeEnd(edge, rSite, lSite, vb);
paulo@89	5213 d3_geom_voronoiCells[lSite.i].edges.push(new d3_geom_voronoiHalfEdge(edge, lSite, rSite));
paulo@89	5214 d3_geom_voronoiCells[rSite.i].edges.push(new d3_geom_voronoiHalfEdge(edge, rSite, lSite));
paulo@89	5215 return edge;
paulo@89	5216 }
paulo@89	5217 function d3_geom_voronoiCreateBorderEdge(lSite, va, vb) {
paulo@89	5218 var edge = new d3_geom_voronoiEdge(lSite, null);
paulo@89	5219 edge.a = va;
paulo@89	5220 edge.b = vb;
paulo@89	5221 d3_geom_voronoiEdges.push(edge);
paulo@89	5222 return edge;
paulo@89	5223 }
paulo@89	5224 function d3_geom_voronoiSetEdgeEnd(edge, lSite, rSite, vertex) {
paulo@89	5225 if (!edge.a && !edge.b) {
paulo@89	5226 edge.a = vertex;
paulo@89	5227 edge.l = lSite;
paulo@89	5228 edge.r = rSite;
paulo@89	5229 } else if (edge.l === rSite) {
paulo@89	5230 edge.b = vertex;
paulo@89	5231 } else {
paulo@89	5232 edge.a = vertex;
paulo@89	5233 }
paulo@89	5234 }
paulo@89	5235 function d3_geom_voronoiHalfEdge(edge, lSite, rSite) {
paulo@89	5236 var va = edge.a, vb = edge.b;
paulo@89	5237 this.edge = edge;
paulo@89	5238 this.site = lSite;
paulo@89	5239 this.angle = rSite ? Math.atan2(rSite.y - lSite.y, rSite.x - lSite.x) : edge.l === lSite ? Math.atan2(vb.x - va.x, va.y - vb.y) : Math.atan2(va.x - vb.x, vb.y - va.y);
paulo@89	5240 }
paulo@89	5241 d3_geom_voronoiHalfEdge.prototype = {
paulo@89	5242 start: function() {
paulo@89	5243 return this.edge.l === this.site ? this.edge.a : this.edge.b;
paulo@89	5244 },
paulo@89	5245 end: function() {
paulo@89	5246 return this.edge.l === this.site ? this.edge.b : this.edge.a;
paulo@89	5247 }
paulo@89	5248 };
paulo@89	5249 function d3_geom_voronoiRedBlackTree() {
paulo@89	5250 this._ = null;
paulo@89	5251 }
paulo@89	5252 function d3_geom_voronoiRedBlackNode(node) {
paulo@89	5253 node.U = node.C = node.L = node.R = node.P = node.N = null;
paulo@89	5254 }
paulo@89	5255 d3_geom_voronoiRedBlackTree.prototype = {
paulo@89	5256 insert: function(after, node) {
paulo@89	5257 var parent, grandpa, uncle;
paulo@89	5258 if (after) {
paulo@89	5259 node.P = after;
paulo@89	5260 node.N = after.N;
paulo@89	5261 if (after.N) after.N.P = node;
paulo@89	5262 after.N = node;
paulo@89	5263 if (after.R) {
paulo@89	5264 after = after.R;
paulo@89	5265 while (after.L) after = after.L;
paulo@89	5266 after.L = node;
paulo@89	5267 } else {
paulo@89	5268 after.R = node;
paulo@89	5269 }
paulo@89	5270 parent = after;
paulo@89	5271 } else if (this._) {
paulo@89	5272 after = d3_geom_voronoiRedBlackFirst(this._);
paulo@89	5273 node.P = null;
paulo@89	5274 node.N = after;
paulo@89	5275 after.P = after.L = node;
paulo@89	5276 parent = after;
paulo@89	5277 } else {
paulo@89	5278 node.P = node.N = null;
paulo@89	5279 this._ = node;
paulo@89	5280 parent = null;
paulo@89	5281 }
paulo@89	5282 node.L = node.R = null;
paulo@89	5283 node.U = parent;
paulo@89	5284 node.C = true;
paulo@89	5285 after = node;
paulo@89	5286 while (parent && parent.C) {
paulo@89	5287 grandpa = parent.U;
paulo@89	5288 if (parent === grandpa.L) {
paulo@89	5289 uncle = grandpa.R;
paulo@89	5290 if (uncle && uncle.C) {
paulo@89	5291 parent.C = uncle.C = false;
paulo@89	5292 grandpa.C = true;
paulo@89	5293 after = grandpa;
paulo@89	5294 } else {
paulo@89	5295 if (after === parent.R) {
paulo@89	5296 d3_geom_voronoiRedBlackRotateLeft(this, parent);
paulo@89	5297 after = parent;
paulo@89	5298 parent = after.U;
paulo@89	5299 }
paulo@89	5300 parent.C = false;
paulo@89	5301 grandpa.C = true;
paulo@89	5302 d3_geom_voronoiRedBlackRotateRight(this, grandpa);
paulo@89	5303 }
paulo@89	5304 } else {
paulo@89	5305 uncle = grandpa.L;
paulo@89	5306 if (uncle && uncle.C) {
paulo@89	5307 parent.C = uncle.C = false;
paulo@89	5308 grandpa.C = true;
paulo@89	5309 after = grandpa;
paulo@89	5310 } else {
paulo@89	5311 if (after === parent.L) {
paulo@89	5312 d3_geom_voronoiRedBlackRotateRight(this, parent);
paulo@89	5313 after = parent;
paulo@89	5314 parent = after.U;
paulo@89	5315 }
paulo@89	5316 parent.C = false;
paulo@89	5317 grandpa.C = true;
paulo@89	5318 d3_geom_voronoiRedBlackRotateLeft(this, grandpa);
paulo@89	5319 }
paulo@89	5320 }
paulo@89	5321 parent = after.U;
paulo@89	5322 }
paulo@89	5323 this._.C = false;
paulo@89	5324 },
paulo@89	5325 remove: function(node) {
paulo@89	5326 if (node.N) node.N.P = node.P;
paulo@89	5327 if (node.P) node.P.N = node.N;
paulo@89	5328 node.N = node.P = null;
paulo@89	5329 var parent = node.U, sibling, left = node.L, right = node.R, next, red;
paulo@89	5330 if (!left) next = right; else if (!right) next = left; else next = d3_geom_voronoiRedBlackFirst(right);
paulo@89	5331 if (parent) {
paulo@89	5332 if (parent.L === node) parent.L = next; else parent.R = next;
paulo@89	5333 } else {
paulo@89	5334 this._ = next;
paulo@89	5335 }
paulo@89	5336 if (left && right) {
paulo@89	5337 red = next.C;
paulo@89	5338 next.C = node.C;
paulo@89	5339 next.L = left;
paulo@89	5340 left.U = next;
paulo@89	5341 if (next !== right) {
paulo@89	5342 parent = next.U;
paulo@89	5343 next.U = node.U;
paulo@89	5344 node = next.R;
paulo@89	5345 parent.L = node;
paulo@89	5346 next.R = right;
paulo@89	5347 right.U = next;
paulo@89	5348 } else {
paulo@89	5349 next.U = parent;
paulo@89	5350 parent = next;
paulo@89	5351 node = next.R;
paulo@89	5352 }
paulo@89	5353 } else {
paulo@89	5354 red = node.C;
paulo@89	5355 node = next;
paulo@89	5356 }
paulo@89	5357 if (node) node.U = parent;
paulo@89	5358 if (red) return;
paulo@89	5359 if (node && node.C) {
paulo@89	5360 node.C = false;
paulo@89	5361 return;
paulo@89	5362 }
paulo@89	5363 do {
paulo@89	5364 if (node === this._) break;
paulo@89	5365 if (node === parent.L) {
paulo@89	5366 sibling = parent.R;
paulo@89	5367 if (sibling.C) {
paulo@89	5368 sibling.C = false;
paulo@89	5369 parent.C = true;
paulo@89	5370 d3_geom_voronoiRedBlackRotateLeft(this, parent);
paulo@89	5371 sibling = parent.R;
paulo@89	5372 }
paulo@89	5373 if (sibling.L && sibling.L.C \|\| sibling.R && sibling.R.C) {
paulo@89	5374 if (!sibling.R \|\| !sibling.R.C) {
paulo@89	5375 sibling.L.C = false;
paulo@89	5376 sibling.C = true;
paulo@89	5377 d3_geom_voronoiRedBlackRotateRight(this, sibling);
paulo@89	5378 sibling = parent.R;
paulo@89	5379 }
paulo@89	5380 sibling.C = parent.C;
paulo@89	5381 parent.C = sibling.R.C = false;
paulo@89	5382 d3_geom_voronoiRedBlackRotateLeft(this, parent);
paulo@89	5383 node = this._;
paulo@89	5384 break;
paulo@89	5385 }
paulo@89	5386 } else {
paulo@89	5387 sibling = parent.L;
paulo@89	5388 if (sibling.C) {
paulo@89	5389 sibling.C = false;
paulo@89	5390 parent.C = true;
paulo@89	5391 d3_geom_voronoiRedBlackRotateRight(this, parent);
paulo@89	5392 sibling = parent.L;
paulo@89	5393 }
paulo@89	5394 if (sibling.L && sibling.L.C \|\| sibling.R && sibling.R.C) {
paulo@89	5395 if (!sibling.L \|\| !sibling.L.C) {
paulo@89	5396 sibling.R.C = false;
paulo@89	5397 sibling.C = true;
paulo@89	5398 d3_geom_voronoiRedBlackRotateLeft(this, sibling);
paulo@89	5399 sibling = parent.L;
paulo@89	5400 }
paulo@89	5401 sibling.C = parent.C;
paulo@89	5402 parent.C = sibling.L.C = false;
paulo@89	5403 d3_geom_voronoiRedBlackRotateRight(this, parent);
paulo@89	5404 node = this._;
paulo@89	5405 break;
paulo@89	5406 }
paulo@89	5407 }
paulo@89	5408 sibling.C = true;
paulo@89	5409 node = parent;
paulo@89	5410 parent = parent.U;
paulo@89	5411 } while (!node.C);
paulo@89	5412 if (node) node.C = false;
paulo@89	5413 }
paulo@89	5414 };
paulo@89	5415 function d3_geom_voronoiRedBlackRotateLeft(tree, node) {
paulo@89	5416 var p = node, q = node.R, parent = p.U;
paulo@89	5417 if (parent) {
paulo@89	5418 if (parent.L === p) parent.L = q; else parent.R = q;
paulo@89	5419 } else {
paulo@89	5420 tree._ = q;
paulo@89	5421 }
paulo@89	5422 q.U = parent;
paulo@89	5423 p.U = q;
paulo@89	5424 p.R = q.L;
paulo@89	5425 if (p.R) p.R.U = p;
paulo@89	5426 q.L = p;
paulo@89	5427 }
paulo@89	5428 function d3_geom_voronoiRedBlackRotateRight(tree, node) {
paulo@89	5429 var p = node, q = node.L, parent = p.U;
paulo@89	5430 if (parent) {
paulo@89	5431 if (parent.L === p) parent.L = q; else parent.R = q;
paulo@89	5432 } else {
paulo@89	5433 tree._ = q;
paulo@89	5434 }
paulo@89	5435 q.U = parent;
paulo@89	5436 p.U = q;
paulo@89	5437 p.L = q.R;
paulo@89	5438 if (p.L) p.L.U = p;
paulo@89	5439 q.R = p;
paulo@89	5440 }
paulo@89	5441 function d3_geom_voronoiRedBlackFirst(node) {
paulo@89	5442 while (node.L) node = node.L;
paulo@89	5443 return node;
paulo@89	5444 }
paulo@89	5445 function d3_geom_voronoi(sites, bbox) {
paulo@89	5446 var site = sites.sort(d3_geom_voronoiVertexOrder).pop(), x0, y0, circle;
paulo@89	5447 d3_geom_voronoiEdges = [];
paulo@89	5448 d3_geom_voronoiCells = new Array(sites.length);
paulo@89	5449 d3_geom_voronoiBeaches = new d3_geom_voronoiRedBlackTree();
paulo@89	5450 d3_geom_voronoiCircles = new d3_geom_voronoiRedBlackTree();
paulo@89	5451 while (true) {
paulo@89	5452 circle = d3_geom_voronoiFirstCircle;
paulo@89	5453 if (site && (!circle \|\| site.y < circle.y \|\| site.y === circle.y && site.x < circle.x)) {
paulo@89	5454 if (site.x !== x0 \|\| site.y !== y0) {
paulo@89	5455 d3_geom_voronoiCells[site.i] = new d3_geom_voronoiCell(site);
paulo@89	5456 d3_geom_voronoiAddBeach(site);
paulo@89	5457 x0 = site.x, y0 = site.y;
paulo@89	5458 }
paulo@89	5459 site = sites.pop();
paulo@89	5460 } else if (circle) {
paulo@89	5461 d3_geom_voronoiRemoveBeach(circle.arc);
paulo@89	5462 } else {
paulo@89	5463 break;
paulo@89	5464 }
paulo@89	5465 }
paulo@89	5466 if (bbox) d3_geom_voronoiClipEdges(bbox), d3_geom_voronoiCloseCells(bbox);
paulo@89	5467 var diagram = {
paulo@89	5468 cells: d3_geom_voronoiCells,
paulo@89	5469 edges: d3_geom_voronoiEdges
paulo@89	5470 };
paulo@89	5471 d3_geom_voronoiBeaches = d3_geom_voronoiCircles = d3_geom_voronoiEdges = d3_geom_voronoiCells = null;
paulo@89	5472 return diagram;
paulo@89	5473 }
paulo@89	5474 function d3_geom_voronoiVertexOrder(a, b) {
paulo@89	5475 return b.y - a.y \|\| b.x - a.x;
paulo@89	5476 }
paulo@89	5477 d3.geom.voronoi = function(points) {
paulo@89	5478 var x = d3_geom_pointX, y = d3_geom_pointY, fx = x, fy = y, clipExtent = d3_geom_voronoiClipExtent;
paulo@89	5479 if (points) return voronoi(points);
paulo@89	5480 function voronoi(data) {
paulo@89	5481 var polygons = new Array(data.length), x0 = clipExtent[0][0], y0 = clipExtent[0][1], x1 = clipExtent[1][0], y1 = clipExtent[1][1];
paulo@89	5482 d3_geom_voronoi(sites(data), clipExtent).cells.forEach(function(cell, i) {
paulo@89	5483 var edges = cell.edges, site = cell.site, polygon = polygons[i] = edges.length ? edges.map(function(e) {
paulo@89	5484 var s = e.start();
paulo@89	5485 return [ s.x, s.y ];
paulo@89	5486 }) : site.x >= x0 && site.x <= x1 && site.y >= y0 && site.y <= y1 ? [ [ x0, y1 ], [ x1, y1 ], [ x1, y0 ], [ x0, y0 ] ] : [];
paulo@89	5487 polygon.point = data[i];
paulo@89	5488 });
paulo@89	5489 return polygons;
paulo@89	5490 }
paulo@89	5491 function sites(data) {
paulo@89	5492 return data.map(function(d, i) {
paulo@89	5493 return {
paulo@89	5494 x: Math.round(fx(d, i) / ε) * ε,
paulo@89	5495 y: Math.round(fy(d, i) / ε) * ε,
paulo@89	5496 i: i
paulo@89	5497 };
paulo@89	5498 });
paulo@89	5499 }
paulo@89	5500 voronoi.links = function(data) {
paulo@89	5501 return d3_geom_voronoi(sites(data)).edges.filter(function(edge) {
paulo@89	5502 return edge.l && edge.r;
paulo@89	5503 }).map(function(edge) {
paulo@89	5504 return {
paulo@89	5505 source: data[edge.l.i],
paulo@89	5506 target: data[edge.r.i]
paulo@89	5507 };
paulo@89	5508 });
paulo@89	5509 };
paulo@89	5510 voronoi.triangles = function(data) {
paulo@89	5511 var triangles = [];
paulo@89	5512 d3_geom_voronoi(sites(data)).cells.forEach(function(cell, i) {
paulo@89	5513 var site = cell.site, edges = cell.edges.sort(d3_geom_voronoiHalfEdgeOrder), j = -1, m = edges.length, e0, s0, e1 = edges[m - 1].edge, s1 = e1.l === site ? e1.r : e1.l;
paulo@89	5514 while (++j < m) {
paulo@89	5515 e0 = e1;
paulo@89	5516 s0 = s1;
paulo@89	5517 e1 = edges[j].edge;
paulo@89	5518 s1 = e1.l === site ? e1.r : e1.l;
paulo@89	5519 if (i < s0.i && i < s1.i && d3_geom_voronoiTriangleArea(site, s0, s1) < 0) {
paulo@89	5520 triangles.push([ data[i], data[s0.i], data[s1.i] ]);
paulo@89	5521 }
paulo@89	5522 }
paulo@89	5523 });
paulo@89	5524 return triangles;
paulo@89	5525 };
paulo@89	5526 voronoi.x = function(_) {
paulo@89	5527 return arguments.length ? (fx = d3_functor(x = _), voronoi) : x;
paulo@89	5528 };
paulo@89	5529 voronoi.y = function(_) {
paulo@89	5530 return arguments.length ? (fy = d3_functor(y = _), voronoi) : y;
paulo@89	5531 };
paulo@89	5532 voronoi.clipExtent = function(_) {
paulo@89	5533 if (!arguments.length) return clipExtent === d3_geom_voronoiClipExtent ? null : clipExtent;
paulo@89	5534 clipExtent = _ == null ? d3_geom_voronoiClipExtent : _;
paulo@89	5535 return voronoi;
paulo@89	5536 };
paulo@89	5537 voronoi.size = function(_) {
paulo@89	5538 if (!arguments.length) return clipExtent === d3_geom_voronoiClipExtent ? null : clipExtent && clipExtent[1];
paulo@89	5539 return voronoi.clipExtent(_ && [ [ 0, 0 ], _ ]);
paulo@89	5540 };
paulo@89	5541 return voronoi;
paulo@89	5542 };
paulo@89	5543 var d3_geom_voronoiClipExtent = [ [ -1e6, -1e6 ], [ 1e6, 1e6 ] ];
paulo@89	5544 function d3_geom_voronoiTriangleArea(a, b, c) {
paulo@89	5545 return (a.x - c.x) * (b.y - a.y) - (a.x - b.x) * (c.y - a.y);
paulo@89	5546 }
paulo@89	5547 d3.geom.delaunay = function(vertices) {
paulo@89	5548 return d3.geom.voronoi().triangles(vertices);
paulo@89	5549 };
paulo@89	5550 d3.geom.quadtree = function(points, x1, y1, x2, y2) {
paulo@89	5551 var x = d3_geom_pointX, y = d3_geom_pointY, compat;
paulo@89	5552 if (compat = arguments.length) {
paulo@89	5553 x = d3_geom_quadtreeCompatX;
paulo@89	5554 y = d3_geom_quadtreeCompatY;
paulo@89	5555 if (compat === 3) {
paulo@89	5556 y2 = y1;
paulo@89	5557 x2 = x1;
paulo@89	5558 y1 = x1 = 0;
paulo@89	5559 }
paulo@89	5560 return quadtree(points);
paulo@89	5561 }
paulo@89	5562 function quadtree(data) {
paulo@89	5563 var d, fx = d3_functor(x), fy = d3_functor(y), xs, ys, i, n, x1_, y1_, x2_, y2_;
paulo@89	5564 if (x1 != null) {
paulo@89	5565 x1_ = x1, y1_ = y1, x2_ = x2, y2_ = y2;
paulo@89	5566 } else {
paulo@89	5567 x2_ = y2_ = -(x1_ = y1_ = Infinity);
paulo@89	5568 xs = [], ys = [];
paulo@89	5569 n = data.length;
paulo@89	5570 if (compat) for (i = 0; i < n; ++i) {
paulo@89	5571 d = data[i];
paulo@89	5572 if (d.x < x1_) x1_ = d.x;
paulo@89	5573 if (d.y < y1_) y1_ = d.y;
paulo@89	5574 if (d.x > x2_) x2_ = d.x;
paulo@89	5575 if (d.y > y2_) y2_ = d.y;
paulo@89	5576 xs.push(d.x);
paulo@89	5577 ys.push(d.y);
paulo@89	5578 } else for (i = 0; i < n; ++i) {
paulo@89	5579 var x_ = +fx(d = data[i], i), y_ = +fy(d, i);
paulo@89	5580 if (x_ < x1_) x1_ = x_;
paulo@89	5581 if (y_ < y1_) y1_ = y_;
paulo@89	5582 if (x_ > x2_) x2_ = x_;
paulo@89	5583 if (y_ > y2_) y2_ = y_;
paulo@89	5584 xs.push(x_);
paulo@89	5585 ys.push(y_);
paulo@89	5586 }
paulo@89	5587 }
paulo@89	5588 var dx = x2_ - x1_, dy = y2_ - y1_;
paulo@89	5589 if (dx > dy) y2_ = y1_ + dx; else x2_ = x1_ + dy;
paulo@89	5590 function insert(n, d, x, y, x1, y1, x2, y2) {
paulo@89	5591 if (isNaN(x) \|\| isNaN(y)) return;
paulo@89	5592 if (n.leaf) {
paulo@89	5593 var nx = n.x, ny = n.y;
paulo@89	5594 if (nx != null) {
paulo@89	5595 if (abs(nx - x) + abs(ny - y) < .01) {
paulo@89	5596 insertChild(n, d, x, y, x1, y1, x2, y2);
paulo@89	5597 } else {
paulo@89	5598 var nPoint = n.point;
paulo@89	5599 n.x = n.y = n.point = null;
paulo@89	5600 insertChild(n, nPoint, nx, ny, x1, y1, x2, y2);
paulo@89	5601 insertChild(n, d, x, y, x1, y1, x2, y2);
paulo@89	5602 }
paulo@89	5603 } else {
paulo@89	5604 n.x = x, n.y = y, n.point = d;
paulo@89	5605 }
paulo@89	5606 } else {
paulo@89	5607 insertChild(n, d, x, y, x1, y1, x2, y2);
paulo@89	5608 }
paulo@89	5609 }
paulo@89	5610 function insertChild(n, d, x, y, x1, y1, x2, y2) {
paulo@89	5611 var xm = (x1 + x2) * .5, ym = (y1 + y2) * .5, right = x >= xm, below = y >= ym, i = below << 1 \| right;
paulo@89	5612 n.leaf = false;
paulo@89	5613 n = n.nodes[i] \|\| (n.nodes[i] = d3_geom_quadtreeNode());
paulo@89	5614 if (right) x1 = xm; else x2 = xm;
paulo@89	5615 if (below) y1 = ym; else y2 = ym;
paulo@89	5616 insert(n, d, x, y, x1, y1, x2, y2);
paulo@89	5617 }
paulo@89	5618 var root = d3_geom_quadtreeNode();
paulo@89	5619 root.add = function(d) {
paulo@89	5620 insert(root, d, +fx(d, ++i), +fy(d, i), x1_, y1_, x2_, y2_);
paulo@89	5621 };
paulo@89	5622 root.visit = function(f) {
paulo@89	5623 d3_geom_quadtreeVisit(f, root, x1_, y1_, x2_, y2_);
paulo@89	5624 };
paulo@89	5625 root.find = function(point) {
paulo@89	5626 return d3_geom_quadtreeFind(root, point[0], point[1], x1_, y1_, x2_, y2_);
paulo@89	5627 };
paulo@89	5628 i = -1;
paulo@89	5629 if (x1 == null) {
paulo@89	5630 while (++i < n) {
paulo@89	5631 insert(root, data[i], xs[i], ys[i], x1_, y1_, x2_, y2_);
paulo@89	5632 }
paulo@89	5633 --i;
paulo@89	5634 } else data.forEach(root.add);
paulo@89	5635 xs = ys = data = d = null;
paulo@89	5636 return root;
paulo@89	5637 }
paulo@89	5638 quadtree.x = function(_) {
paulo@89	5639 return arguments.length ? (x = _, quadtree) : x;
paulo@89	5640 };
paulo@89	5641 quadtree.y = function(_) {
paulo@89	5642 return arguments.length ? (y = _, quadtree) : y;
paulo@89	5643 };
paulo@89	5644 quadtree.extent = function(_) {
paulo@89	5645 if (!arguments.length) return x1 == null ? null : [ [ x1, y1 ], [ x2, y2 ] ];
paulo@89	5646 if (_ == null) x1 = y1 = x2 = y2 = null; else x1 = +_[0][0], y1 = +_[0][1], x2 = +_[1][0],
paulo@89	5647 y2 = +_[1][1];
paulo@89	5648 return quadtree;
paulo@89	5649 };
paulo@89	5650 quadtree.size = function(_) {
paulo@89	5651 if (!arguments.length) return x1 == null ? null : [ x2 - x1, y2 - y1 ];
paulo@89	5652 if (_ == null) x1 = y1 = x2 = y2 = null; else x1 = y1 = 0, x2 = +_[0], y2 = +_[1];
paulo@89	5653 return quadtree;
paulo@89	5654 };
paulo@89	5655 return quadtree;
paulo@89	5656 };
paulo@89	5657 function d3_geom_quadtreeCompatX(d) {
paulo@89	5658 return d.x;
paulo@89	5659 }
paulo@89	5660 function d3_geom_quadtreeCompatY(d) {
paulo@89	5661 return d.y;
paulo@89	5662 }
paulo@89	5663 function d3_geom_quadtreeNode() {
paulo@89	5664 return {
paulo@89	5665 leaf: true,
paulo@89	5666 nodes: [],
paulo@89	5667 point: null,
paulo@89	5668 x: null,
paulo@89	5669 y: null
paulo@89	5670 };
paulo@89	5671 }
paulo@89	5672 function d3_geom_quadtreeVisit(f, node, x1, y1, x2, y2) {
paulo@89	5673 if (!f(node, x1, y1, x2, y2)) {
paulo@89	5674 var sx = (x1 + x2) * .5, sy = (y1 + y2) * .5, children = node.nodes;
paulo@89	5675 if (children[0]) d3_geom_quadtreeVisit(f, children[0], x1, y1, sx, sy);
paulo@89	5676 if (children[1]) d3_geom_quadtreeVisit(f, children[1], sx, y1, x2, sy);
paulo@89	5677 if (children[2]) d3_geom_quadtreeVisit(f, children[2], x1, sy, sx, y2);
paulo@89	5678 if (children[3]) d3_geom_quadtreeVisit(f, children[3], sx, sy, x2, y2);
paulo@89	5679 }
paulo@89	5680 }
paulo@89	5681 function d3_geom_quadtreeFind(root, x, y, x0, y0, x3, y3) {
paulo@89	5682 var minDistance2 = Infinity, closestPoint;
paulo@89	5683 (function find(node, x1, y1, x2, y2) {
paulo@89	5684 if (x1 > x3 \|\| y1 > y3 \|\| x2 < x0 \|\| y2 < y0) return;
paulo@89	5685 if (point = node.point) {
paulo@89	5686 var point, dx = x - node.x, dy = y - node.y, distance2 = dx * dx + dy * dy;
paulo@89	5687 if (distance2 < minDistance2) {
paulo@89	5688 var distance = Math.sqrt(minDistance2 = distance2);
paulo@89	5689 x0 = x - distance, y0 = y - distance;
paulo@89	5690 x3 = x + distance, y3 = y + distance;
paulo@89	5691 closestPoint = point;
paulo@89	5692 }
paulo@89	5693 }
paulo@89	5694 var children = node.nodes, xm = (x1 + x2) * .5, ym = (y1 + y2) * .5, right = x >= xm, below = y >= ym;
paulo@89	5695 for (var i = below << 1 \| right, j = i + 4; i < j; ++i) {
paulo@89	5696 if (node = children[i & 3]) switch (i & 3) {
paulo@89	5697 case 0:
paulo@89	5698 find(node, x1, y1, xm, ym);
paulo@89	5699 break;
paulo@89	5700
paulo@89	5701 case 1:
paulo@89	5702 find(node, xm, y1, x2, ym);
paulo@89	5703 break;
paulo@89	5704
paulo@89	5705 case 2:
paulo@89	5706 find(node, x1, ym, xm, y2);
paulo@89	5707 break;
paulo@89	5708
paulo@89	5709 case 3:
paulo@89	5710 find(node, xm, ym, x2, y2);
paulo@89	5711 break;
paulo@89	5712 }
paulo@89	5713 }
paulo@89	5714 })(root, x0, y0, x3, y3);
paulo@89	5715 return closestPoint;
paulo@89	5716 }
paulo@89	5717 d3.interpolateRgb = d3_interpolateRgb;
paulo@89	5718 function d3_interpolateRgb(a, b) {
paulo@89	5719 a = d3.rgb(a);
paulo@89	5720 b = d3.rgb(b);
paulo@89	5721 var ar = a.r, ag = a.g, ab = a.b, br = b.r - ar, bg = b.g - ag, bb = b.b - ab;
paulo@89	5722 return function(t) {
paulo@89	5723 return "#" + d3_rgb_hex(Math.round(ar + br * t)) + d3_rgb_hex(Math.round(ag + bg * t)) + d3_rgb_hex(Math.round(ab + bb * t));
paulo@89	5724 };
paulo@89	5725 }
paulo@89	5726 d3.interpolateObject = d3_interpolateObject;
paulo@89	5727 function d3_interpolateObject(a, b) {
paulo@89	5728 var i = {}, c = {}, k;
paulo@89	5729 for (k in a) {
paulo@89	5730 if (k in b) {
paulo@89	5731 i[k] = d3_interpolate(a[k], b[k]);
paulo@89	5732 } else {
paulo@89	5733 c[k] = a[k];
paulo@89	5734 }
paulo@89	5735 }
paulo@89	5736 for (k in b) {
paulo@89	5737 if (!(k in a)) {
paulo@89	5738 c[k] = b[k];
paulo@89	5739 }
paulo@89	5740 }
paulo@89	5741 return function(t) {
paulo@89	5742 for (k in i) c[k] = i[k](t);
paulo@89	5743 return c;
paulo@89	5744 };
paulo@89	5745 }
paulo@89	5746 d3.interpolateNumber = d3_interpolateNumber;
paulo@89	5747 function d3_interpolateNumber(a, b) {
paulo@89	5748 a = +a, b = +b;
paulo@89	5749 return function(t) {
paulo@89	5750 return a * (1 - t) + b * t;
paulo@89	5751 };
paulo@89	5752 }
paulo@89	5753 d3.interpolateString = d3_interpolateString;
paulo@89	5754 function d3_interpolateString(a, b) {
paulo@89	5755 var bi = d3_interpolate_numberA.lastIndex = d3_interpolate_numberB.lastIndex = 0, am, bm, bs, i = -1, s = [], q = [];
paulo@89	5756 a = a + "", b = b + "";
paulo@89	5757 while ((am = d3_interpolate_numberA.exec(a)) && (bm = d3_interpolate_numberB.exec(b))) {
paulo@89	5758 if ((bs = bm.index) > bi) {
paulo@89	5759 bs = b.slice(bi, bs);
paulo@89	5760 if (s[i]) s[i] += bs; else s[++i] = bs;
paulo@89	5761 }
paulo@89	5762 if ((am = am[0]) === (bm = bm[0])) {
paulo@89	5763 if (s[i]) s[i] += bm; else s[++i] = bm;
paulo@89	5764 } else {
paulo@89	5765 s[++i] = null;
paulo@89	5766 q.push({
paulo@89	5767 i: i,
paulo@89	5768 x: d3_interpolateNumber(am, bm)
paulo@89	5769 });
paulo@89	5770 }
paulo@89	5771 bi = d3_interpolate_numberB.lastIndex;
paulo@89	5772 }
paulo@89	5773 if (bi < b.length) {
paulo@89	5774 bs = b.slice(bi);
paulo@89	5775 if (s[i]) s[i] += bs; else s[++i] = bs;
paulo@89	5776 }
paulo@89	5777 return s.length < 2 ? q[0] ? (b = q[0].x, function(t) {
paulo@89	5778 return b(t) + "";
paulo@89	5779 }) : function() {
paulo@89	5780 return b;
paulo@89	5781 } : (b = q.length, function(t) {
paulo@89	5782 for (var i = 0, o; i < b; ++i) s[(o = q[i]).i] = o.x(t);
paulo@89	5783 return s.join("");
paulo@89	5784 });
paulo@89	5785 }
paulo@89	5786 var d3_interpolate_numberA = /[-+]?(?:\d+\.?\d*\|\.?\d+)(?:[eE][-+]?\d+)?/g, d3_interpolate_numberB = new RegExp(d3_interpolate_numberA.source, "g");
paulo@89	5787 d3.interpolate = d3_interpolate;
paulo@89	5788 function d3_interpolate(a, b) {
paulo@89	5789 var i = d3.interpolators.length, f;
paulo@89	5790 while (--i >= 0 && !(f = d3.interpolators[i](a, b))) ;
paulo@89	5791 return f;
paulo@89	5792 }
paulo@89	5793 d3.interpolators = [ function(a, b) {
paulo@89	5794 var t = typeof b;
paulo@89	5795 return (t === "string" ? d3_rgb_names.has(b.toLowerCase()) \|\| /^(#\|rgb\(\|hsl\()/i.test(b) ? d3_interpolateRgb : d3_interpolateString : b instanceof d3_color ? d3_interpolateRgb : Array.isArray(b) ? d3_interpolateArray : t === "object" && isNaN(b) ? d3_interpolateObject : d3_interpolateNumber)(a, b);
paulo@89	5796 } ];
paulo@89	5797 d3.interpolateArray = d3_interpolateArray;
paulo@89	5798 function d3_interpolateArray(a, b) {
paulo@89	5799 var x = [], c = [], na = a.length, nb = b.length, n0 = Math.min(a.length, b.length), i;
paulo@89	5800 for (i = 0; i < n0; ++i) x.push(d3_interpolate(a[i], b[i]));
paulo@89	5801 for (;i < na; ++i) c[i] = a[i];
paulo@89	5802 for (;i < nb; ++i) c[i] = b[i];
paulo@89	5803 return function(t) {
paulo@89	5804 for (i = 0; i < n0; ++i) c[i] = x[i](t);
paulo@89	5805 return c;
paulo@89	5806 };
paulo@89	5807 }
paulo@89	5808 var d3_ease_default = function() {
paulo@89	5809 return d3_identity;
paulo@89	5810 };
paulo@89	5811 var d3_ease = d3.map({
paulo@89	5812 linear: d3_ease_default,
paulo@89	5813 poly: d3_ease_poly,
paulo@89	5814 quad: function() {
paulo@89	5815 return d3_ease_quad;
paulo@89	5816 },
paulo@89	5817 cubic: function() {
paulo@89	5818 return d3_ease_cubic;
paulo@89	5819 },
paulo@89	5820 sin: function() {
paulo@89	5821 return d3_ease_sin;
paulo@89	5822 },
paulo@89	5823 exp: function() {
paulo@89	5824 return d3_ease_exp;
paulo@89	5825 },
paulo@89	5826 circle: function() {
paulo@89	5827 return d3_ease_circle;
paulo@89	5828 },
paulo@89	5829 elastic: d3_ease_elastic,
paulo@89	5830 back: d3_ease_back,
paulo@89	5831 bounce: function() {
paulo@89	5832 return d3_ease_bounce;
paulo@89	5833 }
paulo@89	5834 });
paulo@89	5835 var d3_ease_mode = d3.map({
paulo@89	5836 "in": d3_identity,
paulo@89	5837 out: d3_ease_reverse,
paulo@89	5838 "in-out": d3_ease_reflect,
paulo@89	5839 "out-in": function(f) {
paulo@89	5840 return d3_ease_reflect(d3_ease_reverse(f));
paulo@89	5841 }
paulo@89	5842 });
paulo@89	5843 d3.ease = function(name) {
paulo@89	5844 var i = name.indexOf("-"), t = i >= 0 ? name.slice(0, i) : name, m = i >= 0 ? name.slice(i + 1) : "in";
paulo@89	5845 t = d3_ease.get(t) \|\| d3_ease_default;
paulo@89	5846 m = d3_ease_mode.get(m) \|\| d3_identity;
paulo@89	5847 return d3_ease_clamp(m(t.apply(null, d3_arraySlice.call(arguments, 1))));
paulo@89	5848 };
paulo@89	5849 function d3_ease_clamp(f) {
paulo@89	5850 return function(t) {
paulo@89	5851 return t <= 0 ? 0 : t >= 1 ? 1 : f(t);
paulo@89	5852 };
paulo@89	5853 }
paulo@89	5854 function d3_ease_reverse(f) {
paulo@89	5855 return function(t) {
paulo@89	5856 return 1 - f(1 - t);
paulo@89	5857 };
paulo@89	5858 }
paulo@89	5859 function d3_ease_reflect(f) {
paulo@89	5860 return function(t) {
paulo@89	5861 return .5 * (t < .5 ? f(2 * t) : 2 - f(2 - 2 * t));
paulo@89	5862 };
paulo@89	5863 }
paulo@89	5864 function d3_ease_quad(t) {
paulo@89	5865 return t * t;
paulo@89	5866 }
paulo@89	5867 function d3_ease_cubic(t) {
paulo@89	5868 return t * t * t;
paulo@89	5869 }
paulo@89	5870 function d3_ease_cubicInOut(t) {
paulo@89	5871 if (t <= 0) return 0;
paulo@89	5872 if (t >= 1) return 1;
paulo@89	5873 var t2 = t * t, t3 = t2 * t;
paulo@89	5874 return 4 * (t < .5 ? t3 : 3 * (t - t2) + t3 - .75);
paulo@89	5875 }
paulo@89	5876 function d3_ease_poly(e) {
paulo@89	5877 return function(t) {
paulo@89	5878 return Math.pow(t, e);
paulo@89	5879 };
paulo@89	5880 }
paulo@89	5881 function d3_ease_sin(t) {
paulo@89	5882 return 1 - Math.cos(t * halfπ);
paulo@89	5883 }
paulo@89	5884 function d3_ease_exp(t) {
paulo@89	5885 return Math.pow(2, 10 * (t - 1));
paulo@89	5886 }
paulo@89	5887 function d3_ease_circle(t) {
paulo@89	5888 return 1 - Math.sqrt(1 - t * t);
paulo@89	5889 }
paulo@89	5890 function d3_ease_elastic(a, p) {
paulo@89	5891 var s;
paulo@89	5892 if (arguments.length < 2) p = .45;
paulo@89	5893 if (arguments.length) s = p / τ * Math.asin(1 / a); else a = 1, s = p / 4;
paulo@89	5894 return function(t) {
paulo@89	5895 return 1 + a * Math.pow(2, -10 * t) * Math.sin((t - s) * τ / p);
paulo@89	5896 };
paulo@89	5897 }
paulo@89	5898 function d3_ease_back(s) {
paulo@89	5899 if (!s) s = 1.70158;
paulo@89	5900 return function(t) {
paulo@89	5901 return t * t * ((s + 1) * t - s);
paulo@89	5902 };
paulo@89	5903 }
paulo@89	5904 function d3_ease_bounce(t) {
paulo@89	5905 return t < 1 / 2.75 ? 7.5625 * t * t : t < 2 / 2.75 ? 7.5625 * (t -= 1.5 / 2.75) * t + .75 : t < 2.5 / 2.75 ? 7.5625 * (t -= 2.25 / 2.75) * t + .9375 : 7.5625 * (t -= 2.625 / 2.75) * t + .984375;
paulo@89	5906 }
paulo@89	5907 d3.interpolateHcl = d3_interpolateHcl;
paulo@89	5908 function d3_interpolateHcl(a, b) {
paulo@89	5909 a = d3.hcl(a);
paulo@89	5910 b = d3.hcl(b);
paulo@89	5911 var ah = a.h, ac = a.c, al = a.l, bh = b.h - ah, bc = b.c - ac, bl = b.l - al;
paulo@89	5912 if (isNaN(bc)) bc = 0, ac = isNaN(ac) ? b.c : ac;
paulo@89	5913 if (isNaN(bh)) bh = 0, ah = isNaN(ah) ? b.h : ah; else if (bh > 180) bh -= 360; else if (bh < -180) bh += 360;
paulo@89	5914 return function(t) {
paulo@89	5915 return d3_hcl_lab(ah + bh * t, ac + bc * t, al + bl * t) + "";
paulo@89	5916 };
paulo@89	5917 }
paulo@89	5918 d3.interpolateHsl = d3_interpolateHsl;
paulo@89	5919 function d3_interpolateHsl(a, b) {
paulo@89	5920 a = d3.hsl(a);
paulo@89	5921 b = d3.hsl(b);
paulo@89	5922 var ah = a.h, as = a.s, al = a.l, bh = b.h - ah, bs = b.s - as, bl = b.l - al;
paulo@89	5923 if (isNaN(bs)) bs = 0, as = isNaN(as) ? b.s : as;
paulo@89	5924 if (isNaN(bh)) bh = 0, ah = isNaN(ah) ? b.h : ah; else if (bh > 180) bh -= 360; else if (bh < -180) bh += 360;
paulo@89	5925 return function(t) {
paulo@89	5926 return d3_hsl_rgb(ah + bh * t, as + bs * t, al + bl * t) + "";
paulo@89	5927 };
paulo@89	5928 }
paulo@89	5929 d3.interpolateLab = d3_interpolateLab;
paulo@89	5930 function d3_interpolateLab(a, b) {
paulo@89	5931 a = d3.lab(a);
paulo@89	5932 b = d3.lab(b);
paulo@89	5933 var al = a.l, aa = a.a, ab = a.b, bl = b.l - al, ba = b.a - aa, bb = b.b - ab;
paulo@89	5934 return function(t) {
paulo@89	5935 return d3_lab_rgb(al + bl * t, aa + ba * t, ab + bb * t) + "";
paulo@89	5936 };
paulo@89	5937 }
paulo@89	5938 d3.interpolateRound = d3_interpolateRound;
paulo@89	5939 function d3_interpolateRound(a, b) {
paulo@89	5940 b -= a;
paulo@89	5941 return function(t) {
paulo@89	5942 return Math.round(a + b * t);
paulo@89	5943 };
paulo@89	5944 }
paulo@89	5945 d3.transform = function(string) {
paulo@89	5946 var g = d3_document.createElementNS(d3.ns.prefix.svg, "g");
paulo@89	5947 return (d3.transform = function(string) {
paulo@89	5948 if (string != null) {
paulo@89	5949 g.setAttribute("transform", string);
paulo@89	5950 var t = g.transform.baseVal.consolidate();
paulo@89	5951 }
paulo@89	5952 return new d3_transform(t ? t.matrix : d3_transformIdentity);
paulo@89	5953 })(string);
paulo@89	5954 };
paulo@89	5955 function d3_transform(m) {
paulo@89	5956 var r0 = [ m.a, m.b ], r1 = [ m.c, m.d ], kx = d3_transformNormalize(r0), kz = d3_transformDot(r0, r1), ky = d3_transformNormalize(d3_transformCombine(r1, r0, -kz)) \|\| 0;
paulo@89	5957 if (r0[0] * r1[1] < r1[0] * r0[1]) {
paulo@89	5958 r0[0] *= -1;
paulo@89	5959 r0[1] *= -1;
paulo@89	5960 kx *= -1;
paulo@89	5961 kz *= -1;
paulo@89	5962 }
paulo@89	5963 this.rotate = (kx ? Math.atan2(r0[1], r0[0]) : Math.atan2(-r1[0], r1[1])) * d3_degrees;
paulo@89	5964 this.translate = [ m.e, m.f ];
paulo@89	5965 this.scale = [ kx, ky ];
paulo@89	5966 this.skew = ky ? Math.atan2(kz, ky) * d3_degrees : 0;
paulo@89	5967 }
paulo@89	5968 d3_transform.prototype.toString = function() {
paulo@89	5969 return "translate(" + this.translate + ")rotate(" + this.rotate + ")skewX(" + this.skew + ")scale(" + this.scale + ")";
paulo@89	5970 };
paulo@89	5971 function d3_transformDot(a, b) {
paulo@89	5972 return a[0] * b[0] + a[1] * b[1];
paulo@89	5973 }
paulo@89	5974 function d3_transformNormalize(a) {
paulo@89	5975 var k = Math.sqrt(d3_transformDot(a, a));
paulo@89	5976 if (k) {
paulo@89	5977 a[0] /= k;
paulo@89	5978 a[1] /= k;
paulo@89	5979 }
paulo@89	5980 return k;
paulo@89	5981 }
paulo@89	5982 function d3_transformCombine(a, b, k) {
paulo@89	5983 a[0] += k * b[0];
paulo@89	5984 a[1] += k * b[1];
paulo@89	5985 return a;
paulo@89	5986 }
paulo@89	5987 var d3_transformIdentity = {
paulo@89	5988 a: 1,
paulo@89	5989 b: 0,
paulo@89	5990 c: 0,
paulo@89	5991 d: 1,
paulo@89	5992 e: 0,
paulo@89	5993 f: 0
paulo@89	5994 };
paulo@89	5995 d3.interpolateTransform = d3_interpolateTransform;
paulo@89	5996 function d3_interpolateTransformPop(s) {
paulo@89	5997 return s.length ? s.pop() + "," : "";
paulo@89	5998 }
paulo@89	5999 function d3_interpolateTranslate(ta, tb, s, q) {
paulo@89	6000 if (ta[0] !== tb[0] \|\| ta[1] !== tb[1]) {
paulo@89	6001 var i = s.push("translate(", null, ",", null, ")");
paulo@89	6002 q.push({
paulo@89	6003 i: i - 4,
paulo@89	6004 x: d3_interpolateNumber(ta[0], tb[0])
paulo@89	6005 }, {
paulo@89	6006 i: i - 2,
paulo@89	6007 x: d3_interpolateNumber(ta[1], tb[1])
paulo@89	6008 });
paulo@89	6009 } else if (tb[0] \|\| tb[1]) {
paulo@89	6010 s.push("translate(" + tb + ")");
paulo@89	6011 }
paulo@89	6012 }
paulo@89	6013 function d3_interpolateRotate(ra, rb, s, q) {
paulo@89	6014 if (ra !== rb) {
paulo@89	6015 if (ra - rb > 180) rb += 360; else if (rb - ra > 180) ra += 360;
paulo@89	6016 q.push({
paulo@89	6017 i: s.push(d3_interpolateTransformPop(s) + "rotate(", null, ")") - 2,
paulo@89	6018 x: d3_interpolateNumber(ra, rb)
paulo@89	6019 });
paulo@89	6020 } else if (rb) {
paulo@89	6021 s.push(d3_interpolateTransformPop(s) + "rotate(" + rb + ")");
paulo@89	6022 }
paulo@89	6023 }
paulo@89	6024 function d3_interpolateSkew(wa, wb, s, q) {
paulo@89	6025 if (wa !== wb) {
paulo@89	6026 q.push({
paulo@89	6027 i: s.push(d3_interpolateTransformPop(s) + "skewX(", null, ")") - 2,
paulo@89	6028 x: d3_interpolateNumber(wa, wb)
paulo@89	6029 });
paulo@89	6030 } else if (wb) {
paulo@89	6031 s.push(d3_interpolateTransformPop(s) + "skewX(" + wb + ")");
paulo@89	6032 }
paulo@89	6033 }
paulo@89	6034 function d3_interpolateScale(ka, kb, s, q) {
paulo@89	6035 if (ka[0] !== kb[0] \|\| ka[1] !== kb[1]) {
paulo@89	6036 var i = s.push(d3_interpolateTransformPop(s) + "scale(", null, ",", null, ")");
paulo@89	6037 q.push({
paulo@89	6038 i: i - 4,
paulo@89	6039 x: d3_interpolateNumber(ka[0], kb[0])
paulo@89	6040 }, {
paulo@89	6041 i: i - 2,
paulo@89	6042 x: d3_interpolateNumber(ka[1], kb[1])
paulo@89	6043 });
paulo@89	6044 } else if (kb[0] !== 1 \|\| kb[1] !== 1) {
paulo@89	6045 s.push(d3_interpolateTransformPop(s) + "scale(" + kb + ")");
paulo@89	6046 }
paulo@89	6047 }
paulo@89	6048 function d3_interpolateTransform(a, b) {
paulo@89	6049 var s = [], q = [];
paulo@89	6050 a = d3.transform(a), b = d3.transform(b);
paulo@89	6051 d3_interpolateTranslate(a.translate, b.translate, s, q);
paulo@89	6052 d3_interpolateRotate(a.rotate, b.rotate, s, q);
paulo@89	6053 d3_interpolateSkew(a.skew, b.skew, s, q);
paulo@89	6054 d3_interpolateScale(a.scale, b.scale, s, q);
paulo@89	6055 a = b = null;
paulo@89	6056 return function(t) {
paulo@89	6057 var i = -1, n = q.length, o;
paulo@89	6058 while (++i < n) s[(o = q[i]).i] = o.x(t);
paulo@89	6059 return s.join("");
paulo@89	6060 };
paulo@89	6061 }
paulo@89	6062 function d3_uninterpolateNumber(a, b) {
paulo@89	6063 b = (b -= a = +a) \|\| 1 / b;
paulo@89	6064 return function(x) {
paulo@89	6065 return (x - a) / b;
paulo@89	6066 };
paulo@89	6067 }
paulo@89	6068 function d3_uninterpolateClamp(a, b) {
paulo@89	6069 b = (b -= a = +a) \|\| 1 / b;
paulo@89	6070 return function(x) {
paulo@89	6071 return Math.max(0, Math.min(1, (x - a) / b));
paulo@89	6072 };
paulo@89	6073 }
paulo@89	6074 d3.layout = {};
paulo@89	6075 d3.layout.bundle = function() {
paulo@89	6076 return function(links) {
paulo@89	6077 var paths = [], i = -1, n = links.length;
paulo@89	6078 while (++i < n) paths.push(d3_layout_bundlePath(links[i]));
paulo@89	6079 return paths;
paulo@89	6080 };
paulo@89	6081 };
paulo@89	6082 function d3_layout_bundlePath(link) {
paulo@89	6083 var start = link.source, end = link.target, lca = d3_layout_bundleLeastCommonAncestor(start, end), points = [ start ];
paulo@89	6084 while (start !== lca) {
paulo@89	6085 start = start.parent;
paulo@89	6086 points.push(start);
paulo@89	6087 }
paulo@89	6088 var k = points.length;
paulo@89	6089 while (end !== lca) {
paulo@89	6090 points.splice(k, 0, end);
paulo@89	6091 end = end.parent;
paulo@89	6092 }
paulo@89	6093 return points;
paulo@89	6094 }
paulo@89	6095 function d3_layout_bundleAncestors(node) {
paulo@89	6096 var ancestors = [], parent = node.parent;
paulo@89	6097 while (parent != null) {
paulo@89	6098 ancestors.push(node);
paulo@89	6099 node = parent;
paulo@89	6100 parent = parent.parent;
paulo@89	6101 }
paulo@89	6102 ancestors.push(node);
paulo@89	6103 return ancestors;
paulo@89	6104 }
paulo@89	6105 function d3_layout_bundleLeastCommonAncestor(a, b) {
paulo@89	6106 if (a === b) return a;
paulo@89	6107 var aNodes = d3_layout_bundleAncestors(a), bNodes = d3_layout_bundleAncestors(b), aNode = aNodes.pop(), bNode = bNodes.pop(), sharedNode = null;
paulo@89	6108 while (aNode === bNode) {
paulo@89	6109 sharedNode = aNode;
paulo@89	6110 aNode = aNodes.pop();
paulo@89	6111 bNode = bNodes.pop();
paulo@89	6112 }
paulo@89	6113 return sharedNode;
paulo@89	6114 }
paulo@89	6115 d3.layout.chord = function() {
paulo@89	6116 var chord = {}, chords, groups, matrix, n, padding = 0, sortGroups, sortSubgroups, sortChords;
paulo@89	6117 function relayout() {
paulo@89	6118 var subgroups = {}, groupSums = [], groupIndex = d3.range(n), subgroupIndex = [], k, x, x0, i, j;
paulo@89	6119 chords = [];
paulo@89	6120 groups = [];
paulo@89	6121 k = 0, i = -1;
paulo@89	6122 while (++i < n) {
paulo@89	6123 x = 0, j = -1;
paulo@89	6124 while (++j < n) {
paulo@89	6125 x += matrix[i][j];
paulo@89	6126 }
paulo@89	6127 groupSums.push(x);
paulo@89	6128 subgroupIndex.push(d3.range(n));
paulo@89	6129 k += x;
paulo@89	6130 }
paulo@89	6131 if (sortGroups) {
paulo@89	6132 groupIndex.sort(function(a, b) {
paulo@89	6133 return sortGroups(groupSums[a], groupSums[b]);
paulo@89	6134 });
paulo@89	6135 }
paulo@89	6136 if (sortSubgroups) {
paulo@89	6137 subgroupIndex.forEach(function(d, i) {
paulo@89	6138 d.sort(function(a, b) {
paulo@89	6139 return sortSubgroups(matrix[i][a], matrix[i][b]);
paulo@89	6140 });
paulo@89	6141 });
paulo@89	6142 }
paulo@89	6143 k = (τ - padding * n) / k;
paulo@89	6144 x = 0, i = -1;
paulo@89	6145 while (++i < n) {
paulo@89	6146 x0 = x, j = -1;
paulo@89	6147 while (++j < n) {
paulo@89	6148 var di = groupIndex[i], dj = subgroupIndex[di][j], v = matrix[di][dj], a0 = x, a1 = x += v * k;
paulo@89	6149 subgroups[di + "-" + dj] = {
paulo@89	6150 index: di,
paulo@89	6151 subindex: dj,
paulo@89	6152 startAngle: a0,
paulo@89	6153 endAngle: a1,
paulo@89	6154 value: v
paulo@89	6155 };
paulo@89	6156 }
paulo@89	6157 groups[di] = {
paulo@89	6158 index: di,
paulo@89	6159 startAngle: x0,
paulo@89	6160 endAngle: x,
paulo@89	6161 value: groupSums[di]
paulo@89	6162 };
paulo@89	6163 x += padding;
paulo@89	6164 }
paulo@89	6165 i = -1;
paulo@89	6166 while (++i < n) {
paulo@89	6167 j = i - 1;
paulo@89	6168 while (++j < n) {
paulo@89	6169 var source = subgroups[i + "-" + j], target = subgroups[j + "-" + i];
paulo@89	6170 if (source.value \|\| target.value) {
paulo@89	6171 chords.push(source.value < target.value ? {
paulo@89	6172 source: target,
paulo@89	6173 target: source
paulo@89	6174 } : {
paulo@89	6175 source: source,
paulo@89	6176 target: target
paulo@89	6177 });
paulo@89	6178 }
paulo@89	6179 }
paulo@89	6180 }
paulo@89	6181 if (sortChords) resort();
paulo@89	6182 }
paulo@89	6183 function resort() {
paulo@89	6184 chords.sort(function(a, b) {
paulo@89	6185 return sortChords((a.source.value + a.target.value) / 2, (b.source.value + b.target.value) / 2);
paulo@89	6186 });
paulo@89	6187 }
paulo@89	6188 chord.matrix = function(x) {
paulo@89	6189 if (!arguments.length) return matrix;
paulo@89	6190 n = (matrix = x) && matrix.length;
paulo@89	6191 chords = groups = null;
paulo@89	6192 return chord;
paulo@89	6193 };
paulo@89	6194 chord.padding = function(x) {
paulo@89	6195 if (!arguments.length) return padding;
paulo@89	6196 padding = x;
paulo@89	6197 chords = groups = null;
paulo@89	6198 return chord;
paulo@89	6199 };
paulo@89	6200 chord.sortGroups = function(x) {
paulo@89	6201 if (!arguments.length) return sortGroups;
paulo@89	6202 sortGroups = x;
paulo@89	6203 chords = groups = null;
paulo@89	6204 return chord;
paulo@89	6205 };
paulo@89	6206 chord.sortSubgroups = function(x) {
paulo@89	6207 if (!arguments.length) return sortSubgroups;
paulo@89	6208 sortSubgroups = x;
paulo@89	6209 chords = null;
paulo@89	6210 return chord;
paulo@89	6211 };
paulo@89	6212 chord.sortChords = function(x) {
paulo@89	6213 if (!arguments.length) return sortChords;
paulo@89	6214 sortChords = x;
paulo@89	6215 if (chords) resort();
paulo@89	6216 return chord;
paulo@89	6217 };
paulo@89	6218 chord.chords = function() {
paulo@89	6219 if (!chords) relayout();
paulo@89	6220 return chords;
paulo@89	6221 };
paulo@89	6222 chord.groups = function() {
paulo@89	6223 if (!groups) relayout();
paulo@89	6224 return groups;
paulo@89	6225 };
paulo@89	6226 return chord;
paulo@89	6227 };
paulo@89	6228 d3.layout.force = function() {
paulo@89	6229 var force = {}, event = d3.dispatch("start", "tick", "end"), timer, size = [ 1, 1 ], drag, alpha, friction = .9, linkDistance = d3_layout_forceLinkDistance, linkStrength = d3_layout_forceLinkStrength, charge = -30, chargeDistance2 = d3_layout_forceChargeDistance2, gravity = .1, theta2 = .64, nodes = [], links = [], distances, strengths, charges;
paulo@89	6230 function repulse(node) {
paulo@89	6231 return function(quad, x1, _, x2) {
paulo@89	6232 if (quad.point !== node) {
paulo@89	6233 var dx = quad.cx - node.x, dy = quad.cy - node.y, dw = x2 - x1, dn = dx * dx + dy * dy;
paulo@89	6234 if (dw * dw / theta2 < dn) {
paulo@89	6235 if (dn < chargeDistance2) {
paulo@89	6236 var k = quad.charge / dn;
paulo@89	6237 node.px -= dx * k;
paulo@89	6238 node.py -= dy * k;
paulo@89	6239 }
paulo@89	6240 return true;
paulo@89	6241 }
paulo@89	6242 if (quad.point && dn && dn < chargeDistance2) {
paulo@89	6243 var k = quad.pointCharge / dn;
paulo@89	6244 node.px -= dx * k;
paulo@89	6245 node.py -= dy * k;
paulo@89	6246 }
paulo@89	6247 }
paulo@89	6248 return !quad.charge;
paulo@89	6249 };
paulo@89	6250 }
paulo@89	6251 force.tick = function() {
paulo@89	6252 if ((alpha *= .99) < .005) {
paulo@89	6253 timer = null;
paulo@89	6254 event.end({
paulo@89	6255 type: "end",
paulo@89	6256 alpha: alpha = 0
paulo@89	6257 });
paulo@89	6258 return true;
paulo@89	6259 }
paulo@89	6260 var n = nodes.length, m = links.length, q, i, o, s, t, l, k, x, y;
paulo@89	6261 for (i = 0; i < m; ++i) {
paulo@89	6262 o = links[i];
paulo@89	6263 s = o.source;
paulo@89	6264 t = o.target;
paulo@89	6265 x = t.x - s.x;
paulo@89	6266 y = t.y - s.y;
paulo@89	6267 if (l = x * x + y * y) {
paulo@89	6268 l = alpha * strengths[i] * ((l = Math.sqrt(l)) - distances[i]) / l;
paulo@89	6269 x *= l;
paulo@89	6270 y *= l;
paulo@89	6271 t.x -= x * (k = s.weight + t.weight ? s.weight / (s.weight + t.weight) : .5);
paulo@89	6272 t.y -= y * k;
paulo@89	6273 s.x += x * (k = 1 - k);
paulo@89	6274 s.y += y * k;
paulo@89	6275 }
paulo@89	6276 }
paulo@89	6277 if (k = alpha * gravity) {
paulo@89	6278 x = size[0] / 2;
paulo@89	6279 y = size[1] / 2;
paulo@89	6280 i = -1;
paulo@89	6281 if (k) while (++i < n) {
paulo@89	6282 o = nodes[i];
paulo@89	6283 o.x += (x - o.x) * k;
paulo@89	6284 o.y += (y - o.y) * k;
paulo@89	6285 }
paulo@89	6286 }
paulo@89	6287 if (charge) {
paulo@89	6288 d3_layout_forceAccumulate(q = d3.geom.quadtree(nodes), alpha, charges);
paulo@89	6289 i = -1;
paulo@89	6290 while (++i < n) {
paulo@89	6291 if (!(o = nodes[i]).fixed) {
paulo@89	6292 q.visit(repulse(o));
paulo@89	6293 }
paulo@89	6294 }
paulo@89	6295 }
paulo@89	6296 i = -1;
paulo@89	6297 while (++i < n) {
paulo@89	6298 o = nodes[i];
paulo@89	6299 if (o.fixed) {
paulo@89	6300 o.x = o.px;
paulo@89	6301 o.y = o.py;
paulo@89	6302 } else {
paulo@89	6303 o.x -= (o.px - (o.px = o.x)) * friction;
paulo@89	6304 o.y -= (o.py - (o.py = o.y)) * friction;
paulo@89	6305 }
paulo@89	6306 }
paulo@89	6307 event.tick({
paulo@89	6308 type: "tick",
paulo@89	6309 alpha: alpha
paulo@89	6310 });
paulo@89	6311 };
paulo@89	6312 force.nodes = function(x) {
paulo@89	6313 if (!arguments.length) return nodes;
paulo@89	6314 nodes = x;
paulo@89	6315 return force;
paulo@89	6316 };
paulo@89	6317 force.links = function(x) {
paulo@89	6318 if (!arguments.length) return links;
paulo@89	6319 links = x;
paulo@89	6320 return force;
paulo@89	6321 };
paulo@89	6322 force.size = function(x) {
paulo@89	6323 if (!arguments.length) return size;
paulo@89	6324 size = x;
paulo@89	6325 return force;
paulo@89	6326 };
paulo@89	6327 force.linkDistance = function(x) {
paulo@89	6328 if (!arguments.length) return linkDistance;
paulo@89	6329 linkDistance = typeof x === "function" ? x : +x;
paulo@89	6330 return force;
paulo@89	6331 };
paulo@89	6332 force.distance = force.linkDistance;
paulo@89	6333 force.linkStrength = function(x) {
paulo@89	6334 if (!arguments.length) return linkStrength;
paulo@89	6335 linkStrength = typeof x === "function" ? x : +x;
paulo@89	6336 return force;
paulo@89	6337 };
paulo@89	6338 force.friction = function(x) {
paulo@89	6339 if (!arguments.length) return friction;
paulo@89	6340 friction = +x;
paulo@89	6341 return force;
paulo@89	6342 };
paulo@89	6343 force.charge = function(x) {
paulo@89	6344 if (!arguments.length) return charge;
paulo@89	6345 charge = typeof x === "function" ? x : +x;
paulo@89	6346 return force;
paulo@89	6347 };
paulo@89	6348 force.chargeDistance = function(x) {
paulo@89	6349 if (!arguments.length) return Math.sqrt(chargeDistance2);
paulo@89	6350 chargeDistance2 = x * x;
paulo@89	6351 return force;
paulo@89	6352 };
paulo@89	6353 force.gravity = function(x) {
paulo@89	6354 if (!arguments.length) return gravity;
paulo@89	6355 gravity = +x;
paulo@89	6356 return force;
paulo@89	6357 };
paulo@89	6358 force.theta = function(x) {
paulo@89	6359 if (!arguments.length) return Math.sqrt(theta2);
paulo@89	6360 theta2 = x * x;
paulo@89	6361 return force;
paulo@89	6362 };
paulo@89	6363 force.alpha = function(x) {
paulo@89	6364 if (!arguments.length) return alpha;
paulo@89	6365 x = +x;
paulo@89	6366 if (alpha) {
paulo@89	6367 if (x > 0) {
paulo@89	6368 alpha = x;
paulo@89	6369 } else {
paulo@89	6370 timer.c = null, timer.t = NaN, timer = null;
paulo@89	6371 event.end({
paulo@89	6372 type: "end",
paulo@89	6373 alpha: alpha = 0
paulo@89	6374 });
paulo@89	6375 }
paulo@89	6376 } else if (x > 0) {
paulo@89	6377 event.start({
paulo@89	6378 type: "start",
paulo@89	6379 alpha: alpha = x
paulo@89	6380 });
paulo@89	6381 timer = d3_timer(force.tick);
paulo@89	6382 }
paulo@89	6383 return force;
paulo@89	6384 };
paulo@89	6385 force.start = function() {
paulo@89	6386 var i, n = nodes.length, m = links.length, w = size[0], h = size[1], neighbors, o;
paulo@89	6387 for (i = 0; i < n; ++i) {
paulo@89	6388 (o = nodes[i]).index = i;
paulo@89	6389 o.weight = 0;
paulo@89	6390 }
paulo@89	6391 for (i = 0; i < m; ++i) {
paulo@89	6392 o = links[i];
paulo@89	6393 if (typeof o.source == "number") o.source = nodes[o.source];
paulo@89	6394 if (typeof o.target == "number") o.target = nodes[o.target];
paulo@89	6395 ++o.source.weight;
paulo@89	6396 ++o.target.weight;
paulo@89	6397 }
paulo@89	6398 for (i = 0; i < n; ++i) {
paulo@89	6399 o = nodes[i];
paulo@89	6400 if (isNaN(o.x)) o.x = position("x", w);
paulo@89	6401 if (isNaN(o.y)) o.y = position("y", h);
paulo@89	6402 if (isNaN(o.px)) o.px = o.x;
paulo@89	6403 if (isNaN(o.py)) o.py = o.y;
paulo@89	6404 }
paulo@89	6405 distances = [];
paulo@89	6406 if (typeof linkDistance === "function") for (i = 0; i < m; ++i) distances[i] = +linkDistance.call(this, links[i], i); else for (i = 0; i < m; ++i) distances[i] = linkDistance;
paulo@89	6407 strengths = [];
paulo@89	6408 if (typeof linkStrength === "function") for (i = 0; i < m; ++i) strengths[i] = +linkStrength.call(this, links[i], i); else for (i = 0; i < m; ++i) strengths[i] = linkStrength;
paulo@89	6409 charges = [];
paulo@89	6410 if (typeof charge === "function") for (i = 0; i < n; ++i) charges[i] = +charge.call(this, nodes[i], i); else for (i = 0; i < n; ++i) charges[i] = charge;
paulo@89	6411 function position(dimension, size) {
paulo@89	6412 if (!neighbors) {
paulo@89	6413 neighbors = new Array(n);
paulo@89	6414 for (j = 0; j < n; ++j) {
paulo@89	6415 neighbors[j] = [];
paulo@89	6416 }
paulo@89	6417 for (j = 0; j < m; ++j) {
paulo@89	6418 var o = links[j];
paulo@89	6419 neighbors[o.source.index].push(o.target);
paulo@89	6420 neighbors[o.target.index].push(o.source);
paulo@89	6421 }
paulo@89	6422 }
paulo@89	6423 var candidates = neighbors[i], j = -1, l = candidates.length, x;
paulo@89	6424 while (++j < l) if (!isNaN(x = candidates[j][dimension])) return x;
paulo@89	6425 return Math.random() * size;
paulo@89	6426 }
paulo@89	6427 return force.resume();
paulo@89	6428 };
paulo@89	6429 force.resume = function() {
paulo@89	6430 return force.alpha(.1);
paulo@89	6431 };
paulo@89	6432 force.stop = function() {
paulo@89	6433 return force.alpha(0);
paulo@89	6434 };
paulo@89	6435 force.drag = function() {
paulo@89	6436 if (!drag) drag = d3.behavior.drag().origin(d3_identity).on("dragstart.force", d3_layout_forceDragstart).on("drag.force", dragmove).on("dragend.force", d3_layout_forceDragend);
paulo@89	6437 if (!arguments.length) return drag;
paulo@89	6438 this.on("mouseover.force", d3_layout_forceMouseover).on("mouseout.force", d3_layout_forceMouseout).call(drag);
paulo@89	6439 };
paulo@89	6440 function dragmove(d) {
paulo@89	6441 d.px = d3.event.x, d.py = d3.event.y;
paulo@89	6442 force.resume();
paulo@89	6443 }
paulo@89	6444 return d3.rebind(force, event, "on");
paulo@89	6445 };
paulo@89	6446 function d3_layout_forceDragstart(d) {
paulo@89	6447 d.fixed \|= 2;
paulo@89	6448 }
paulo@89	6449 function d3_layout_forceDragend(d) {
paulo@89	6450 d.fixed &= ~6;
paulo@89	6451 }
paulo@89	6452 function d3_layout_forceMouseover(d) {
paulo@89	6453 d.fixed \|= 4;
paulo@89	6454 d.px = d.x, d.py = d.y;
paulo@89	6455 }
paulo@89	6456 function d3_layout_forceMouseout(d) {
paulo@89	6457 d.fixed &= ~4;
paulo@89	6458 }
paulo@89	6459 function d3_layout_forceAccumulate(quad, alpha, charges) {
paulo@89	6460 var cx = 0, cy = 0;
paulo@89	6461 quad.charge = 0;
paulo@89	6462 if (!quad.leaf) {
paulo@89	6463 var nodes = quad.nodes, n = nodes.length, i = -1, c;
paulo@89	6464 while (++i < n) {
paulo@89	6465 c = nodes[i];
paulo@89	6466 if (c == null) continue;
paulo@89	6467 d3_layout_forceAccumulate(c, alpha, charges);
paulo@89	6468 quad.charge += c.charge;
paulo@89	6469 cx += c.charge * c.cx;
paulo@89	6470 cy += c.charge * c.cy;
paulo@89	6471 }
paulo@89	6472 }
paulo@89	6473 if (quad.point) {
paulo@89	6474 if (!quad.leaf) {
paulo@89	6475 quad.point.x += Math.random() - .5;
paulo@89	6476 quad.point.y += Math.random() - .5;
paulo@89	6477 }
paulo@89	6478 var k = alpha * charges[quad.point.index];
paulo@89	6479 quad.charge += quad.pointCharge = k;
paulo@89	6480 cx += k * quad.point.x;
paulo@89	6481 cy += k * quad.point.y;
paulo@89	6482 }
paulo@89	6483 quad.cx = cx / quad.charge;
paulo@89	6484 quad.cy = cy / quad.charge;
paulo@89	6485 }
paulo@89	6486 var d3_layout_forceLinkDistance = 20, d3_layout_forceLinkStrength = 1, d3_layout_forceChargeDistance2 = Infinity;
paulo@89	6487 d3.layout.hierarchy = function() {
paulo@89	6488 var sort = d3_layout_hierarchySort, children = d3_layout_hierarchyChildren, value = d3_layout_hierarchyValue;
paulo@89	6489 function hierarchy(root) {
paulo@89	6490 var stack = [ root ], nodes = [], node;
paulo@89	6491 root.depth = 0;
paulo@89	6492 while ((node = stack.pop()) != null) {
paulo@89	6493 nodes.push(node);
paulo@89	6494 if ((childs = children.call(hierarchy, node, node.depth)) && (n = childs.length)) {
paulo@89	6495 var n, childs, child;
paulo@89	6496 while (--n >= 0) {
paulo@89	6497 stack.push(child = childs[n]);
paulo@89	6498 child.parent = node;
paulo@89	6499 child.depth = node.depth + 1;
paulo@89	6500 }
paulo@89	6501 if (value) node.value = 0;
paulo@89	6502 node.children = childs;
paulo@89	6503 } else {
paulo@89	6504 if (value) node.value = +value.call(hierarchy, node, node.depth) \|\| 0;
paulo@89	6505 delete node.children;
paulo@89	6506 }
paulo@89	6507 }
paulo@89	6508 d3_layout_hierarchyVisitAfter(root, function(node) {
paulo@89	6509 var childs, parent;
paulo@89	6510 if (sort && (childs = node.children)) childs.sort(sort);
paulo@89	6511 if (value && (parent = node.parent)) parent.value += node.value;
paulo@89	6512 });
paulo@89	6513 return nodes;
paulo@89	6514 }
paulo@89	6515 hierarchy.sort = function(x) {
paulo@89	6516 if (!arguments.length) return sort;
paulo@89	6517 sort = x;
paulo@89	6518 return hierarchy;
paulo@89	6519 };
paulo@89	6520 hierarchy.children = function(x) {
paulo@89	6521 if (!arguments.length) return children;
paulo@89	6522 children = x;
paulo@89	6523 return hierarchy;
paulo@89	6524 };
paulo@89	6525 hierarchy.value = function(x) {
paulo@89	6526 if (!arguments.length) return value;
paulo@89	6527 value = x;
paulo@89	6528 return hierarchy;
paulo@89	6529 };
paulo@89	6530 hierarchy.revalue = function(root) {
paulo@89	6531 if (value) {
paulo@89	6532 d3_layout_hierarchyVisitBefore(root, function(node) {
paulo@89	6533 if (node.children) node.value = 0;
paulo@89	6534 });
paulo@89	6535 d3_layout_hierarchyVisitAfter(root, function(node) {
paulo@89	6536 var parent;
paulo@89	6537 if (!node.children) node.value = +value.call(hierarchy, node, node.depth) \|\| 0;
paulo@89	6538 if (parent = node.parent) parent.value += node.value;
paulo@89	6539 });
paulo@89	6540 }
paulo@89	6541 return root;
paulo@89	6542 };
paulo@89	6543 return hierarchy;
paulo@89	6544 };
paulo@89	6545 function d3_layout_hierarchyRebind(object, hierarchy) {
paulo@89	6546 d3.rebind(object, hierarchy, "sort", "children", "value");
paulo@89	6547 object.nodes = object;
paulo@89	6548 object.links = d3_layout_hierarchyLinks;
paulo@89	6549 return object;
paulo@89	6550 }
paulo@89	6551 function d3_layout_hierarchyVisitBefore(node, callback) {
paulo@89	6552 var nodes = [ node ];
paulo@89	6553 while ((node = nodes.pop()) != null) {
paulo@89	6554 callback(node);
paulo@89	6555 if ((children = node.children) && (n = children.length)) {
paulo@89	6556 var n, children;
paulo@89	6557 while (--n >= 0) nodes.push(children[n]);
paulo@89	6558 }
paulo@89	6559 }
paulo@89	6560 }
paulo@89	6561 function d3_layout_hierarchyVisitAfter(node, callback) {
paulo@89	6562 var nodes = [ node ], nodes2 = [];
paulo@89	6563 while ((node = nodes.pop()) != null) {
paulo@89	6564 nodes2.push(node);
paulo@89	6565 if ((children = node.children) && (n = children.length)) {
paulo@89	6566 var i = -1, n, children;
paulo@89	6567 while (++i < n) nodes.push(children[i]);
paulo@89	6568 }
paulo@89	6569 }
paulo@89	6570 while ((node = nodes2.pop()) != null) {
paulo@89	6571 callback(node);
paulo@89	6572 }
paulo@89	6573 }
paulo@89	6574 function d3_layout_hierarchyChildren(d) {
paulo@89	6575 return d.children;
paulo@89	6576 }
paulo@89	6577 function d3_layout_hierarchyValue(d) {
paulo@89	6578 return d.value;
paulo@89	6579 }
paulo@89	6580 function d3_layout_hierarchySort(a, b) {
paulo@89	6581 return b.value - a.value;
paulo@89	6582 }
paulo@89	6583 function d3_layout_hierarchyLinks(nodes) {
paulo@89	6584 return d3.merge(nodes.map(function(parent) {
paulo@89	6585 return (parent.children \|\| []).map(function(child) {
paulo@89	6586 return {
paulo@89	6587 source: parent,
paulo@89	6588 target: child
paulo@89	6589 };
paulo@89	6590 });
paulo@89	6591 }));
paulo@89	6592 }
paulo@89	6593 d3.layout.partition = function() {
paulo@89	6594 var hierarchy = d3.layout.hierarchy(), size = [ 1, 1 ];
paulo@89	6595 function position(node, x, dx, dy) {
paulo@89	6596 var children = node.children;
paulo@89	6597 node.x = x;
paulo@89	6598 node.y = node.depth * dy;
paulo@89	6599 node.dx = dx;
paulo@89	6600 node.dy = dy;
paulo@89	6601 if (children && (n = children.length)) {
paulo@89	6602 var i = -1, n, c, d;
paulo@89	6603 dx = node.value ? dx / node.value : 0;
paulo@89	6604 while (++i < n) {
paulo@89	6605 position(c = children[i], x, d = c.value * dx, dy);
paulo@89	6606 x += d;
paulo@89	6607 }
paulo@89	6608 }
paulo@89	6609 }
paulo@89	6610 function depth(node) {
paulo@89	6611 var children = node.children, d = 0;
paulo@89	6612 if (children && (n = children.length)) {
paulo@89	6613 var i = -1, n;
paulo@89	6614 while (++i < n) d = Math.max(d, depth(children[i]));
paulo@89	6615 }
paulo@89	6616 return 1 + d;
paulo@89	6617 }
paulo@89	6618 function partition(d, i) {
paulo@89	6619 var nodes = hierarchy.call(this, d, i);
paulo@89	6620 position(nodes[0], 0, size[0], size[1] / depth(nodes[0]));
paulo@89	6621 return nodes;
paulo@89	6622 }
paulo@89	6623 partition.size = function(x) {
paulo@89	6624 if (!arguments.length) return size;
paulo@89	6625 size = x;
paulo@89	6626 return partition;
paulo@89	6627 };
paulo@89	6628 return d3_layout_hierarchyRebind(partition, hierarchy);
paulo@89	6629 };
paulo@89	6630 d3.layout.pie = function() {
paulo@89	6631 var value = Number, sort = d3_layout_pieSortByValue, startAngle = 0, endAngle = τ, padAngle = 0;
paulo@89	6632 function pie(data) {
paulo@89	6633 var n = data.length, values = data.map(function(d, i) {
paulo@89	6634 return +value.call(pie, d, i);
paulo@89	6635 }), a = +(typeof startAngle === "function" ? startAngle.apply(this, arguments) : startAngle), da = (typeof endAngle === "function" ? endAngle.apply(this, arguments) : endAngle) - a, p = Math.min(Math.abs(da) / n, +(typeof padAngle === "function" ? padAngle.apply(this, arguments) : padAngle)), pa = p * (da < 0 ? -1 : 1), sum = d3.sum(values), k = sum ? (da - n * pa) / sum : 0, index = d3.range(n), arcs = [], v;
paulo@89	6636 if (sort != null) index.sort(sort === d3_layout_pieSortByValue ? function(i, j) {
paulo@89	6637 return values[j] - values[i];
paulo@89	6638 } : function(i, j) {
paulo@89	6639 return sort(data[i], data[j]);
paulo@89	6640 });
paulo@89	6641 index.forEach(function(i) {
paulo@89	6642 arcs[i] = {
paulo@89	6643 data: data[i],
paulo@89	6644 value: v = values[i],
paulo@89	6645 startAngle: a,
paulo@89	6646 endAngle: a += v * k + pa,
paulo@89	6647 padAngle: p
paulo@89	6648 };
paulo@89	6649 });
paulo@89	6650 return arcs;
paulo@89	6651 }
paulo@89	6652 pie.value = function(_) {
paulo@89	6653 if (!arguments.length) return value;
paulo@89	6654 value = _;
paulo@89	6655 return pie;
paulo@89	6656 };
paulo@89	6657 pie.sort = function(_) {
paulo@89	6658 if (!arguments.length) return sort;
paulo@89	6659 sort = _;
paulo@89	6660 return pie;
paulo@89	6661 };
paulo@89	6662 pie.startAngle = function(_) {
paulo@89	6663 if (!arguments.length) return startAngle;
paulo@89	6664 startAngle = _;
paulo@89	6665 return pie;
paulo@89	6666 };
paulo@89	6667 pie.endAngle = function(_) {
paulo@89	6668 if (!arguments.length) return endAngle;
paulo@89	6669 endAngle = _;
paulo@89	6670 return pie;
paulo@89	6671 };
paulo@89	6672 pie.padAngle = function(_) {
paulo@89	6673 if (!arguments.length) return padAngle;
paulo@89	6674 padAngle = _;
paulo@89	6675 return pie;
paulo@89	6676 };
paulo@89	6677 return pie;
paulo@89	6678 };
paulo@89	6679 var d3_layout_pieSortByValue = {};
paulo@89	6680 d3.layout.stack = function() {
paulo@89	6681 var values = d3_identity, order = d3_layout_stackOrderDefault, offset = d3_layout_stackOffsetZero, out = d3_layout_stackOut, x = d3_layout_stackX, y = d3_layout_stackY;
paulo@89	6682 function stack(data, index) {
paulo@89	6683 if (!(n = data.length)) return data;
paulo@89	6684 var series = data.map(function(d, i) {
paulo@89	6685 return values.call(stack, d, i);
paulo@89	6686 });
paulo@89	6687 var points = series.map(function(d) {
paulo@89	6688 return d.map(function(v, i) {
paulo@89	6689 return [ x.call(stack, v, i), y.call(stack, v, i) ];
paulo@89	6690 });
paulo@89	6691 });
paulo@89	6692 var orders = order.call(stack, points, index);
paulo@89	6693 series = d3.permute(series, orders);
paulo@89	6694 points = d3.permute(points, orders);
paulo@89	6695 var offsets = offset.call(stack, points, index);
paulo@89	6696 var m = series[0].length, n, i, j, o;
paulo@89	6697 for (j = 0; j < m; ++j) {
paulo@89	6698 out.call(stack, series[0][j], o = offsets[j], points[0][j][1]);
paulo@89	6699 for (i = 1; i < n; ++i) {
paulo@89	6700 out.call(stack, series[i][j], o += points[i - 1][j][1], points[i][j][1]);
paulo@89	6701 }
paulo@89	6702 }
paulo@89	6703 return data;
paulo@89	6704 }
paulo@89	6705 stack.values = function(x) {
paulo@89	6706 if (!arguments.length) return values;
paulo@89	6707 values = x;
paulo@89	6708 return stack;
paulo@89	6709 };
paulo@89	6710 stack.order = function(x) {
paulo@89	6711 if (!arguments.length) return order;
paulo@89	6712 order = typeof x === "function" ? x : d3_layout_stackOrders.get(x) \|\| d3_layout_stackOrderDefault;
paulo@89	6713 return stack;
paulo@89	6714 };
paulo@89	6715 stack.offset = function(x) {
paulo@89	6716 if (!arguments.length) return offset;
paulo@89	6717 offset = typeof x === "function" ? x : d3_layout_stackOffsets.get(x) \|\| d3_layout_stackOffsetZero;
paulo@89	6718 return stack;
paulo@89	6719 };
paulo@89	6720 stack.x = function(z) {
paulo@89	6721 if (!arguments.length) return x;
paulo@89	6722 x = z;
paulo@89	6723 return stack;
paulo@89	6724 };
paulo@89	6725 stack.y = function(z) {
paulo@89	6726 if (!arguments.length) return y;
paulo@89	6727 y = z;
paulo@89	6728 return stack;
paulo@89	6729 };
paulo@89	6730 stack.out = function(z) {
paulo@89	6731 if (!arguments.length) return out;
paulo@89	6732 out = z;
paulo@89	6733 return stack;
paulo@89	6734 };
paulo@89	6735 return stack;
paulo@89	6736 };
paulo@89	6737 function d3_layout_stackX(d) {
paulo@89	6738 return d.x;
paulo@89	6739 }
paulo@89	6740 function d3_layout_stackY(d) {
paulo@89	6741 return d.y;
paulo@89	6742 }
paulo@89	6743 function d3_layout_stackOut(d, y0, y) {
paulo@89	6744 d.y0 = y0;
paulo@89	6745 d.y = y;
paulo@89	6746 }
paulo@89	6747 var d3_layout_stackOrders = d3.map({
paulo@89	6748 "inside-out": function(data) {
paulo@89	6749 var n = data.length, i, j, max = data.map(d3_layout_stackMaxIndex), sums = data.map(d3_layout_stackReduceSum), index = d3.range(n).sort(function(a, b) {
paulo@89	6750 return max[a] - max[b];
paulo@89	6751 }), top = 0, bottom = 0, tops = [], bottoms = [];
paulo@89	6752 for (i = 0; i < n; ++i) {
paulo@89	6753 j = index[i];
paulo@89	6754 if (top < bottom) {
paulo@89	6755 top += sums[j];
paulo@89	6756 tops.push(j);
paulo@89	6757 } else {
paulo@89	6758 bottom += sums[j];
paulo@89	6759 bottoms.push(j);
paulo@89	6760 }
paulo@89	6761 }
paulo@89	6762 return bottoms.reverse().concat(tops);
paulo@89	6763 },
paulo@89	6764 reverse: function(data) {
paulo@89	6765 return d3.range(data.length).reverse();
paulo@89	6766 },
paulo@89	6767 "default": d3_layout_stackOrderDefault
paulo@89	6768 });
paulo@89	6769 var d3_layout_stackOffsets = d3.map({
paulo@89	6770 silhouette: function(data) {
paulo@89	6771 var n = data.length, m = data[0].length, sums = [], max = 0, i, j, o, y0 = [];
paulo@89	6772 for (j = 0; j < m; ++j) {
paulo@89	6773 for (i = 0, o = 0; i < n; i++) o += data[i][j][1];
paulo@89	6774 if (o > max) max = o;
paulo@89	6775 sums.push(o);
paulo@89	6776 }
paulo@89	6777 for (j = 0; j < m; ++j) {
paulo@89	6778 y0[j] = (max - sums[j]) / 2;
paulo@89	6779 }
paulo@89	6780 return y0;
paulo@89	6781 },
paulo@89	6782 wiggle: function(data) {
paulo@89	6783 var n = data.length, x = data[0], m = x.length, i, j, k, s1, s2, s3, dx, o, o0, y0 = [];
paulo@89	6784 y0[0] = o = o0 = 0;
paulo@89	6785 for (j = 1; j < m; ++j) {
paulo@89	6786 for (i = 0, s1 = 0; i < n; ++i) s1 += data[i][j][1];
paulo@89	6787 for (i = 0, s2 = 0, dx = x[j][0] - x[j - 1][0]; i < n; ++i) {
paulo@89	6788 for (k = 0, s3 = (data[i][j][1] - data[i][j - 1][1]) / (2 * dx); k < i; ++k) {
paulo@89	6789 s3 += (data[k][j][1] - data[k][j - 1][1]) / dx;
paulo@89	6790 }
paulo@89	6791 s2 += s3 * data[i][j][1];
paulo@89	6792 }
paulo@89	6793 y0[j] = o -= s1 ? s2 / s1 * dx : 0;
paulo@89	6794 if (o < o0) o0 = o;
paulo@89	6795 }
paulo@89	6796 for (j = 0; j < m; ++j) y0[j] -= o0;
paulo@89	6797 return y0;
paulo@89	6798 },
paulo@89	6799 expand: function(data) {
paulo@89	6800 var n = data.length, m = data[0].length, k = 1 / n, i, j, o, y0 = [];
paulo@89	6801 for (j = 0; j < m; ++j) {
paulo@89	6802 for (i = 0, o = 0; i < n; i++) o += data[i][j][1];
paulo@89	6803 if (o) for (i = 0; i < n; i++) data[i][j][1] /= o; else for (i = 0; i < n; i++) data[i][j][1] = k;
paulo@89	6804 }
paulo@89	6805 for (j = 0; j < m; ++j) y0[j] = 0;
paulo@89	6806 return y0;
paulo@89	6807 },
paulo@89	6808 zero: d3_layout_stackOffsetZero
paulo@89	6809 });
paulo@89	6810 function d3_layout_stackOrderDefault(data) {
paulo@89	6811 return d3.range(data.length);
paulo@89	6812 }
paulo@89	6813 function d3_layout_stackOffsetZero(data) {
paulo@89	6814 var j = -1, m = data[0].length, y0 = [];
paulo@89	6815 while (++j < m) y0[j] = 0;
paulo@89	6816 return y0;
paulo@89	6817 }
paulo@89	6818 function d3_layout_stackMaxIndex(array) {
paulo@89	6819 var i = 1, j = 0, v = array[0][1], k, n = array.length;
paulo@89	6820 for (;i < n; ++i) {
paulo@89	6821 if ((k = array[i][1]) > v) {
paulo@89	6822 j = i;
paulo@89	6823 v = k;
paulo@89	6824 }
paulo@89	6825 }
paulo@89	6826 return j;
paulo@89	6827 }
paulo@89	6828 function d3_layout_stackReduceSum(d) {
paulo@89	6829 return d.reduce(d3_layout_stackSum, 0);
paulo@89	6830 }
paulo@89	6831 function d3_layout_stackSum(p, d) {
paulo@89	6832 return p + d[1];
paulo@89	6833 }
paulo@89	6834 d3.layout.histogram = function() {
paulo@89	6835 var frequency = true, valuer = Number, ranger = d3_layout_histogramRange, binner = d3_layout_histogramBinSturges;
paulo@89	6836 function histogram(data, i) {
paulo@89	6837 var bins = [], values = data.map(valuer, this), range = ranger.call(this, values, i), thresholds = binner.call(this, range, values, i), bin, i = -1, n = values.length, m = thresholds.length - 1, k = frequency ? 1 : 1 / n, x;
paulo@89	6838 while (++i < m) {
paulo@89	6839 bin = bins[i] = [];
paulo@89	6840 bin.dx = thresholds[i + 1] - (bin.x = thresholds[i]);
paulo@89	6841 bin.y = 0;
paulo@89	6842 }
paulo@89	6843 if (m > 0) {
paulo@89	6844 i = -1;
paulo@89	6845 while (++i < n) {
paulo@89	6846 x = values[i];
paulo@89	6847 if (x >= range[0] && x <= range[1]) {
paulo@89	6848 bin = bins[d3.bisect(thresholds, x, 1, m) - 1];
paulo@89	6849 bin.y += k;
paulo@89	6850 bin.push(data[i]);
paulo@89	6851 }
paulo@89	6852 }
paulo@89	6853 }
paulo@89	6854 return bins;
paulo@89	6855 }
paulo@89	6856 histogram.value = function(x) {
paulo@89	6857 if (!arguments.length) return valuer;
paulo@89	6858 valuer = x;
paulo@89	6859 return histogram;
paulo@89	6860 };
paulo@89	6861 histogram.range = function(x) {
paulo@89	6862 if (!arguments.length) return ranger;
paulo@89	6863 ranger = d3_functor(x);
paulo@89	6864 return histogram;
paulo@89	6865 };
paulo@89	6866 histogram.bins = function(x) {
paulo@89	6867 if (!arguments.length) return binner;
paulo@89	6868 binner = typeof x === "number" ? function(range) {
paulo@89	6869 return d3_layout_histogramBinFixed(range, x);
paulo@89	6870 } : d3_functor(x);
paulo@89	6871 return histogram;
paulo@89	6872 };
paulo@89	6873 histogram.frequency = function(x) {
paulo@89	6874 if (!arguments.length) return frequency;
paulo@89	6875 frequency = !!x;
paulo@89	6876 return histogram;
paulo@89	6877 };
paulo@89	6878 return histogram;
paulo@89	6879 };
paulo@89	6880 function d3_layout_histogramBinSturges(range, values) {
paulo@89	6881 return d3_layout_histogramBinFixed(range, Math.ceil(Math.log(values.length) / Math.LN2 + 1));
paulo@89	6882 }
paulo@89	6883 function d3_layout_histogramBinFixed(range, n) {
paulo@89	6884 var x = -1, b = +range[0], m = (range[1] - b) / n, f = [];
paulo@89	6885 while (++x <= n) f[x] = m * x + b;
paulo@89	6886 return f;
paulo@89	6887 }
paulo@89	6888 function d3_layout_histogramRange(values) {
paulo@89	6889 return [ d3.min(values), d3.max(values) ];
paulo@89	6890 }
paulo@89	6891 d3.layout.pack = function() {
paulo@89	6892 var hierarchy = d3.layout.hierarchy().sort(d3_layout_packSort), padding = 0, size = [ 1, 1 ], radius;
paulo@89	6893 function pack(d, i) {
paulo@89	6894 var nodes = hierarchy.call(this, d, i), root = nodes[0], w = size[0], h = size[1], r = radius == null ? Math.sqrt : typeof radius === "function" ? radius : function() {
paulo@89	6895 return radius;
paulo@89	6896 };
paulo@89	6897 root.x = root.y = 0;
paulo@89	6898 d3_layout_hierarchyVisitAfter(root, function(d) {
paulo@89	6899 d.r = +r(d.value);
paulo@89	6900 });
paulo@89	6901 d3_layout_hierarchyVisitAfter(root, d3_layout_packSiblings);
paulo@89	6902 if (padding) {
paulo@89	6903 var dr = padding * (radius ? 1 : Math.max(2 * root.r / w, 2 * root.r / h)) / 2;
paulo@89	6904 d3_layout_hierarchyVisitAfter(root, function(d) {
paulo@89	6905 d.r += dr;
paulo@89	6906 });
paulo@89	6907 d3_layout_hierarchyVisitAfter(root, d3_layout_packSiblings);
paulo@89	6908 d3_layout_hierarchyVisitAfter(root, function(d) {
paulo@89	6909 d.r -= dr;
paulo@89	6910 });
paulo@89	6911 }
paulo@89	6912 d3_layout_packTransform(root, w / 2, h / 2, radius ? 1 : 1 / Math.max(2 * root.r / w, 2 * root.r / h));
paulo@89	6913 return nodes;
paulo@89	6914 }
paulo@89	6915 pack.size = function(_) {
paulo@89	6916 if (!arguments.length) return size;
paulo@89	6917 size = _;
paulo@89	6918 return pack;
paulo@89	6919 };
paulo@89	6920 pack.radius = function(_) {
paulo@89	6921 if (!arguments.length) return radius;
paulo@89	6922 radius = _ == null \|\| typeof _ === "function" ? _ : +_;
paulo@89	6923 return pack;
paulo@89	6924 };
paulo@89	6925 pack.padding = function(_) {
paulo@89	6926 if (!arguments.length) return padding;
paulo@89	6927 padding = +_;
paulo@89	6928 return pack;
paulo@89	6929 };
paulo@89	6930 return d3_layout_hierarchyRebind(pack, hierarchy);
paulo@89	6931 };
paulo@89	6932 function d3_layout_packSort(a, b) {
paulo@89	6933 return a.value - b.value;
paulo@89	6934 }
paulo@89	6935 function d3_layout_packInsert(a, b) {
paulo@89	6936 var c = a._pack_next;
paulo@89	6937 a._pack_next = b;
paulo@89	6938 b._pack_prev = a;
paulo@89	6939 b._pack_next = c;
paulo@89	6940 c._pack_prev = b;
paulo@89	6941 }
paulo@89	6942 function d3_layout_packSplice(a, b) {
paulo@89	6943 a._pack_next = b;
paulo@89	6944 b._pack_prev = a;
paulo@89	6945 }
paulo@89	6946 function d3_layout_packIntersects(a, b) {
paulo@89	6947 var dx = b.x - a.x, dy = b.y - a.y, dr = a.r + b.r;
paulo@89	6948 return .999 * dr * dr > dx * dx + dy * dy;
paulo@89	6949 }
paulo@89	6950 function d3_layout_packSiblings(node) {
paulo@89	6951 if (!(nodes = node.children) \|\| !(n = nodes.length)) return;
paulo@89	6952 var nodes, xMin = Infinity, xMax = -Infinity, yMin = Infinity, yMax = -Infinity, a, b, c, i, j, k, n;
paulo@89	6953 function bound(node) {
paulo@89	6954 xMin = Math.min(node.x - node.r, xMin);
paulo@89	6955 xMax = Math.max(node.x + node.r, xMax);
paulo@89	6956 yMin = Math.min(node.y - node.r, yMin);
paulo@89	6957 yMax = Math.max(node.y + node.r, yMax);
paulo@89	6958 }
paulo@89	6959 nodes.forEach(d3_layout_packLink);
paulo@89	6960 a = nodes[0];
paulo@89	6961 a.x = -a.r;
paulo@89	6962 a.y = 0;
paulo@89	6963 bound(a);
paulo@89	6964 if (n > 1) {
paulo@89	6965 b = nodes[1];
paulo@89	6966 b.x = b.r;
paulo@89	6967 b.y = 0;
paulo@89	6968 bound(b);
paulo@89	6969 if (n > 2) {
paulo@89	6970 c = nodes[2];
paulo@89	6971 d3_layout_packPlace(a, b, c);
paulo@89	6972 bound(c);
paulo@89	6973 d3_layout_packInsert(a, c);
paulo@89	6974 a._pack_prev = c;
paulo@89	6975 d3_layout_packInsert(c, b);
paulo@89	6976 b = a._pack_next;
paulo@89	6977 for (i = 3; i < n; i++) {
paulo@89	6978 d3_layout_packPlace(a, b, c = nodes[i]);
paulo@89	6979 var isect = 0, s1 = 1, s2 = 1;
paulo@89	6980 for (j = b._pack_next; j !== b; j = j._pack_next, s1++) {
paulo@89	6981 if (d3_layout_packIntersects(j, c)) {
paulo@89	6982 isect = 1;
paulo@89	6983 break;
paulo@89	6984 }
paulo@89	6985 }
paulo@89	6986 if (isect == 1) {
paulo@89	6987 for (k = a._pack_prev; k !== j._pack_prev; k = k._pack_prev, s2++) {
paulo@89	6988 if (d3_layout_packIntersects(k, c)) {
paulo@89	6989 break;
paulo@89	6990 }
paulo@89	6991 }
paulo@89	6992 }
paulo@89	6993 if (isect) {
paulo@89	6994 if (s1 < s2 \|\| s1 == s2 && b.r < a.r) d3_layout_packSplice(a, b = j); else d3_layout_packSplice(a = k, b);
paulo@89	6995 i--;
paulo@89	6996 } else {
paulo@89	6997 d3_layout_packInsert(a, c);
paulo@89	6998 b = c;
paulo@89	6999 bound(c);
paulo@89	7000 }
paulo@89	7001 }
paulo@89	7002 }
paulo@89	7003 }
paulo@89	7004 var cx = (xMin + xMax) / 2, cy = (yMin + yMax) / 2, cr = 0;
paulo@89	7005 for (i = 0; i < n; i++) {
paulo@89	7006 c = nodes[i];
paulo@89	7007 c.x -= cx;
paulo@89	7008 c.y -= cy;
paulo@89	7009 cr = Math.max(cr, c.r + Math.sqrt(c.x * c.x + c.y * c.y));
paulo@89	7010 }
paulo@89	7011 node.r = cr;
paulo@89	7012 nodes.forEach(d3_layout_packUnlink);
paulo@89	7013 }
paulo@89	7014 function d3_layout_packLink(node) {
paulo@89	7015 node._pack_next = node._pack_prev = node;
paulo@89	7016 }
paulo@89	7017 function d3_layout_packUnlink(node) {
paulo@89	7018 delete node._pack_next;
paulo@89	7019 delete node._pack_prev;
paulo@89	7020 }
paulo@89	7021 function d3_layout_packTransform(node, x, y, k) {
paulo@89	7022 var children = node.children;
paulo@89	7023 node.x = x += k * node.x;
paulo@89	7024 node.y = y += k * node.y;
paulo@89	7025 node.r *= k;
paulo@89	7026 if (children) {
paulo@89	7027 var i = -1, n = children.length;
paulo@89	7028 while (++i < n) d3_layout_packTransform(children[i], x, y, k);
paulo@89	7029 }
paulo@89	7030 }
paulo@89	7031 function d3_layout_packPlace(a, b, c) {
paulo@89	7032 var db = a.r + c.r, dx = b.x - a.x, dy = b.y - a.y;
paulo@89	7033 if (db && (dx \|\| dy)) {
paulo@89	7034 var da = b.r + c.r, dc = dx * dx + dy * dy;
paulo@89	7035 da *= da;
paulo@89	7036 db *= db;
paulo@89	7037 var x = .5 + (db - da) / (2 * dc), y = Math.sqrt(Math.max(0, 2 * da * (db + dc) - (db -= dc) * db - da * da)) / (2 * dc);
paulo@89	7038 c.x = a.x + x * dx + y * dy;
paulo@89	7039 c.y = a.y + x * dy - y * dx;
paulo@89	7040 } else {
paulo@89	7041 c.x = a.x + db;
paulo@89	7042 c.y = a.y;
paulo@89	7043 }
paulo@89	7044 }
paulo@89	7045 d3.layout.tree = function() {
paulo@89	7046 var hierarchy = d3.layout.hierarchy().sort(null).value(null), separation = d3_layout_treeSeparation, size = [ 1, 1 ], nodeSize = null;
paulo@89	7047 function tree(d, i) {
paulo@89	7048 var nodes = hierarchy.call(this, d, i), root0 = nodes[0], root1 = wrapTree(root0);
paulo@89	7049 d3_layout_hierarchyVisitAfter(root1, firstWalk), root1.parent.m = -root1.z;
paulo@89	7050 d3_layout_hierarchyVisitBefore(root1, secondWalk);
paulo@89	7051 if (nodeSize) d3_layout_hierarchyVisitBefore(root0, sizeNode); else {
paulo@89	7052 var left = root0, right = root0, bottom = root0;
paulo@89	7053 d3_layout_hierarchyVisitBefore(root0, function(node) {
paulo@89	7054 if (node.x < left.x) left = node;
paulo@89	7055 if (node.x > right.x) right = node;
paulo@89	7056 if (node.depth > bottom.depth) bottom = node;
paulo@89	7057 });
paulo@89	7058 var tx = separation(left, right) / 2 - left.x, kx = size[0] / (right.x + separation(right, left) / 2 + tx), ky = size[1] / (bottom.depth \|\| 1);
paulo@89	7059 d3_layout_hierarchyVisitBefore(root0, function(node) {
paulo@89	7060 node.x = (node.x + tx) * kx;
paulo@89	7061 node.y = node.depth * ky;
paulo@89	7062 });
paulo@89	7063 }
paulo@89	7064 return nodes;
paulo@89	7065 }
paulo@89	7066 function wrapTree(root0) {
paulo@89	7067 var root1 = {
paulo@89	7068 A: null,
paulo@89	7069 children: [ root0 ]
paulo@89	7070 }, queue = [ root1 ], node1;
paulo@89	7071 while ((node1 = queue.pop()) != null) {
paulo@89	7072 for (var children = node1.children, child, i = 0, n = children.length; i < n; ++i) {
paulo@89	7073 queue.push((children[i] = child = {
paulo@89	7074 _: children[i],
paulo@89	7075 parent: node1,
paulo@89	7076 children: (child = children[i].children) && child.slice() \|\| [],
paulo@89	7077 A: null,
paulo@89	7078 a: null,
paulo@89	7079 z: 0,
paulo@89	7080 m: 0,
paulo@89	7081 c: 0,
paulo@89	7082 s: 0,
paulo@89	7083 t: null,
paulo@89	7084 i: i
paulo@89	7085 }).a = child);
paulo@89	7086 }
paulo@89	7087 }
paulo@89	7088 return root1.children[0];
paulo@89	7089 }
paulo@89	7090 function firstWalk(v) {
paulo@89	7091 var children = v.children, siblings = v.parent.children, w = v.i ? siblings[v.i - 1] : null;
paulo@89	7092 if (children.length) {
paulo@89	7093 d3_layout_treeShift(v);
paulo@89	7094 var midpoint = (children[0].z + children[children.length - 1].z) / 2;
paulo@89	7095 if (w) {
paulo@89	7096 v.z = w.z + separation(v._, w._);
paulo@89	7097 v.m = v.z - midpoint;
paulo@89	7098 } else {
paulo@89	7099 v.z = midpoint;
paulo@89	7100 }
paulo@89	7101 } else if (w) {
paulo@89	7102 v.z = w.z + separation(v._, w._);
paulo@89	7103 }
paulo@89	7104 v.parent.A = apportion(v, w, v.parent.A \|\| siblings[0]);
paulo@89	7105 }
paulo@89	7106 function secondWalk(v) {
paulo@89	7107 v._.x = v.z + v.parent.m;
paulo@89	7108 v.m += v.parent.m;
paulo@89	7109 }
paulo@89	7110 function apportion(v, w, ancestor) {
paulo@89	7111 if (w) {
paulo@89	7112 var vip = v, vop = v, vim = w, vom = vip.parent.children[0], sip = vip.m, sop = vop.m, sim = vim.m, som = vom.m, shift;
paulo@89	7113 while (vim = d3_layout_treeRight(vim), vip = d3_layout_treeLeft(vip), vim && vip) {
paulo@89	7114 vom = d3_layout_treeLeft(vom);
paulo@89	7115 vop = d3_layout_treeRight(vop);
paulo@89	7116 vop.a = v;
paulo@89	7117 shift = vim.z + sim - vip.z - sip + separation(vim._, vip._);
paulo@89	7118 if (shift > 0) {
paulo@89	7119 d3_layout_treeMove(d3_layout_treeAncestor(vim, v, ancestor), v, shift);
paulo@89	7120 sip += shift;
paulo@89	7121 sop += shift;
paulo@89	7122 }
paulo@89	7123 sim += vim.m;
paulo@89	7124 sip += vip.m;
paulo@89	7125 som += vom.m;
paulo@89	7126 sop += vop.m;
paulo@89	7127 }
paulo@89	7128 if (vim && !d3_layout_treeRight(vop)) {
paulo@89	7129 vop.t = vim;
paulo@89	7130 vop.m += sim - sop;
paulo@89	7131 }
paulo@89	7132 if (vip && !d3_layout_treeLeft(vom)) {
paulo@89	7133 vom.t = vip;
paulo@89	7134 vom.m += sip - som;
paulo@89	7135 ancestor = v;
paulo@89	7136 }
paulo@89	7137 }
paulo@89	7138 return ancestor;
paulo@89	7139 }
paulo@89	7140 function sizeNode(node) {
paulo@89	7141 node.x *= size[0];
paulo@89	7142 node.y = node.depth * size[1];
paulo@89	7143 }
paulo@89	7144 tree.separation = function(x) {
paulo@89	7145 if (!arguments.length) return separation;
paulo@89	7146 separation = x;
paulo@89	7147 return tree;
paulo@89	7148 };
paulo@89	7149 tree.size = function(x) {
paulo@89	7150 if (!arguments.length) return nodeSize ? null : size;
paulo@89	7151 nodeSize = (size = x) == null ? sizeNode : null;
paulo@89	7152 return tree;
paulo@89	7153 };
paulo@89	7154 tree.nodeSize = function(x) {
paulo@89	7155 if (!arguments.length) return nodeSize ? size : null;
paulo@89	7156 nodeSize = (size = x) == null ? null : sizeNode;
paulo@89	7157 return tree;
paulo@89	7158 };
paulo@89	7159 return d3_layout_hierarchyRebind(tree, hierarchy);
paulo@89	7160 };
paulo@89	7161 function d3_layout_treeSeparation(a, b) {
paulo@89	7162 return a.parent == b.parent ? 1 : 2;
paulo@89	7163 }
paulo@89	7164 function d3_layout_treeLeft(v) {
paulo@89	7165 var children = v.children;
paulo@89	7166 return children.length ? children[0] : v.t;
paulo@89	7167 }
paulo@89	7168 function d3_layout_treeRight(v) {
paulo@89	7169 var children = v.children, n;
paulo@89	7170 return (n = children.length) ? children[n - 1] : v.t;
paulo@89	7171 }
paulo@89	7172 function d3_layout_treeMove(wm, wp, shift) {
paulo@89	7173 var change = shift / (wp.i - wm.i);
paulo@89	7174 wp.c -= change;
paulo@89	7175 wp.s += shift;
paulo@89	7176 wm.c += change;
paulo@89	7177 wp.z += shift;
paulo@89	7178 wp.m += shift;
paulo@89	7179 }
paulo@89	7180 function d3_layout_treeShift(v) {
paulo@89	7181 var shift = 0, change = 0, children = v.children, i = children.length, w;
paulo@89	7182 while (--i >= 0) {
paulo@89	7183 w = children[i];
paulo@89	7184 w.z += shift;
paulo@89	7185 w.m += shift;
paulo@89	7186 shift += w.s + (change += w.c);
paulo@89	7187 }
paulo@89	7188 }
paulo@89	7189 function d3_layout_treeAncestor(vim, v, ancestor) {
paulo@89	7190 return vim.a.parent === v.parent ? vim.a : ancestor;
paulo@89	7191 }
paulo@89	7192 d3.layout.cluster = function() {
paulo@89	7193 var hierarchy = d3.layout.hierarchy().sort(null).value(null), separation = d3_layout_treeSeparation, size = [ 1, 1 ], nodeSize = false;
paulo@89	7194 function cluster(d, i) {
paulo@89	7195 var nodes = hierarchy.call(this, d, i), root = nodes[0], previousNode, x = 0;
paulo@89	7196 d3_layout_hierarchyVisitAfter(root, function(node) {
paulo@89	7197 var children = node.children;
paulo@89	7198 if (children && children.length) {
paulo@89	7199 node.x = d3_layout_clusterX(children);
paulo@89	7200 node.y = d3_layout_clusterY(children);
paulo@89	7201 } else {
paulo@89	7202 node.x = previousNode ? x += separation(node, previousNode) : 0;
paulo@89	7203 node.y = 0;
paulo@89	7204 previousNode = node;
paulo@89	7205 }
paulo@89	7206 });
paulo@89	7207 var left = d3_layout_clusterLeft(root), right = d3_layout_clusterRight(root), x0 = left.x - separation(left, right) / 2, x1 = right.x + separation(right, left) / 2;
paulo@89	7208 d3_layout_hierarchyVisitAfter(root, nodeSize ? function(node) {
paulo@89	7209 node.x = (node.x - root.x) * size[0];
paulo@89	7210 node.y = (root.y - node.y) * size[1];
paulo@89	7211 } : function(node) {
paulo@89	7212 node.x = (node.x - x0) / (x1 - x0) * size[0];
paulo@89	7213 node.y = (1 - (root.y ? node.y / root.y : 1)) * size[1];
paulo@89	7214 });
paulo@89	7215 return nodes;
paulo@89	7216 }
paulo@89	7217 cluster.separation = function(x) {
paulo@89	7218 if (!arguments.length) return separation;
paulo@89	7219 separation = x;
paulo@89	7220 return cluster;
paulo@89	7221 };
paulo@89	7222 cluster.size = function(x) {
paulo@89	7223 if (!arguments.length) return nodeSize ? null : size;
paulo@89	7224 nodeSize = (size = x) == null;
paulo@89	7225 return cluster;
paulo@89	7226 };
paulo@89	7227 cluster.nodeSize = function(x) {
paulo@89	7228 if (!arguments.length) return nodeSize ? size : null;
paulo@89	7229 nodeSize = (size = x) != null;
paulo@89	7230 return cluster;
paulo@89	7231 };
paulo@89	7232 return d3_layout_hierarchyRebind(cluster, hierarchy);
paulo@89	7233 };
paulo@89	7234 function d3_layout_clusterY(children) {
paulo@89	7235 return 1 + d3.max(children, function(child) {
paulo@89	7236 return child.y;
paulo@89	7237 });
paulo@89	7238 }
paulo@89	7239 function d3_layout_clusterX(children) {
paulo@89	7240 return children.reduce(function(x, child) {
paulo@89	7241 return x + child.x;
paulo@89	7242 }, 0) / children.length;
paulo@89	7243 }
paulo@89	7244 function d3_layout_clusterLeft(node) {
paulo@89	7245 var children = node.children;
paulo@89	7246 return children && children.length ? d3_layout_clusterLeft(children[0]) : node;
paulo@89	7247 }
paulo@89	7248 function d3_layout_clusterRight(node) {
paulo@89	7249 var children = node.children, n;
paulo@89	7250 return children && (n = children.length) ? d3_layout_clusterRight(children[n - 1]) : node;
paulo@89	7251 }
paulo@89	7252 d3.layout.treemap = function() {
paulo@89	7253 var hierarchy = d3.layout.hierarchy(), round = Math.round, size = [ 1, 1 ], padding = null, pad = d3_layout_treemapPadNull, sticky = false, stickies, mode = "squarify", ratio = .5 * (1 + Math.sqrt(5));
paulo@89	7254 function scale(children, k) {
paulo@89	7255 var i = -1, n = children.length, child, area;
paulo@89	7256 while (++i < n) {
paulo@89	7257 area = (child = children[i]).value * (k < 0 ? 0 : k);
paulo@89	7258 child.area = isNaN(area) \|\| area <= 0 ? 0 : area;
paulo@89	7259 }
paulo@89	7260 }
paulo@89	7261 function squarify(node) {
paulo@89	7262 var children = node.children;
paulo@89	7263 if (children && children.length) {
paulo@89	7264 var rect = pad(node), row = [], remaining = children.slice(), child, best = Infinity, score, u = mode === "slice" ? rect.dx : mode === "dice" ? rect.dy : mode === "slice-dice" ? node.depth & 1 ? rect.dy : rect.dx : Math.min(rect.dx, rect.dy), n;
paulo@89	7265 scale(remaining, rect.dx * rect.dy / node.value);
paulo@89	7266 row.area = 0;
paulo@89	7267 while ((n = remaining.length) > 0) {
paulo@89	7268 row.push(child = remaining[n - 1]);
paulo@89	7269 row.area += child.area;
paulo@89	7270 if (mode !== "squarify" \|\| (score = worst(row, u)) <= best) {
paulo@89	7271 remaining.pop();
paulo@89	7272 best = score;
paulo@89	7273 } else {
paulo@89	7274 row.area -= row.pop().area;
paulo@89	7275 position(row, u, rect, false);
paulo@89	7276 u = Math.min(rect.dx, rect.dy);
paulo@89	7277 row.length = row.area = 0;
paulo@89	7278 best = Infinity;
paulo@89	7279 }
paulo@89	7280 }
paulo@89	7281 if (row.length) {
paulo@89	7282 position(row, u, rect, true);
paulo@89	7283 row.length = row.area = 0;
paulo@89	7284 }
paulo@89	7285 children.forEach(squarify);
paulo@89	7286 }
paulo@89	7287 }
paulo@89	7288 function stickify(node) {
paulo@89	7289 var children = node.children;
paulo@89	7290 if (children && children.length) {
paulo@89	7291 var rect = pad(node), remaining = children.slice(), child, row = [];
paulo@89	7292 scale(remaining, rect.dx * rect.dy / node.value);
paulo@89	7293 row.area = 0;
paulo@89	7294 while (child = remaining.pop()) {
paulo@89	7295 row.push(child);
paulo@89	7296 row.area += child.area;
paulo@89	7297 if (child.z != null) {
paulo@89	7298 position(row, child.z ? rect.dx : rect.dy, rect, !remaining.length);
paulo@89	7299 row.length = row.area = 0;
paulo@89	7300 }
paulo@89	7301 }
paulo@89	7302 children.forEach(stickify);
paulo@89	7303 }
paulo@89	7304 }
paulo@89	7305 function worst(row, u) {
paulo@89	7306 var s = row.area, r, rmax = 0, rmin = Infinity, i = -1, n = row.length;
paulo@89	7307 while (++i < n) {
paulo@89	7308 if (!(r = row[i].area)) continue;
paulo@89	7309 if (r < rmin) rmin = r;
paulo@89	7310 if (r > rmax) rmax = r;
paulo@89	7311 }
paulo@89	7312 s *= s;
paulo@89	7313 u *= u;
paulo@89	7314 return s ? Math.max(u * rmax * ratio / s, s / (u * rmin * ratio)) : Infinity;
paulo@89	7315 }
paulo@89	7316 function position(row, u, rect, flush) {
paulo@89	7317 var i = -1, n = row.length, x = rect.x, y = rect.y, v = u ? round(row.area / u) : 0, o;
paulo@89	7318 if (u == rect.dx) {
paulo@89	7319 if (flush \|\| v > rect.dy) v = rect.dy;
paulo@89	7320 while (++i < n) {
paulo@89	7321 o = row[i];
paulo@89	7322 o.x = x;
paulo@89	7323 o.y = y;
paulo@89	7324 o.dy = v;
paulo@89	7325 x += o.dx = Math.min(rect.x + rect.dx - x, v ? round(o.area / v) : 0);
paulo@89	7326 }
paulo@89	7327 o.z = true;
paulo@89	7328 o.dx += rect.x + rect.dx - x;
paulo@89	7329 rect.y += v;
paulo@89	7330 rect.dy -= v;
paulo@89	7331 } else {
paulo@89	7332 if (flush \|\| v > rect.dx) v = rect.dx;
paulo@89	7333 while (++i < n) {
paulo@89	7334 o = row[i];
paulo@89	7335 o.x = x;
paulo@89	7336 o.y = y;
paulo@89	7337 o.dx = v;
paulo@89	7338 y += o.dy = Math.min(rect.y + rect.dy - y, v ? round(o.area / v) : 0);
paulo@89	7339 }
paulo@89	7340 o.z = false;
paulo@89	7341 o.dy += rect.y + rect.dy - y;
paulo@89	7342 rect.x += v;
paulo@89	7343 rect.dx -= v;
paulo@89	7344 }
paulo@89	7345 }
paulo@89	7346 function treemap(d) {
paulo@89	7347 var nodes = stickies \|\| hierarchy(d), root = nodes[0];
paulo@89	7348 root.x = root.y = 0;
paulo@89	7349 if (root.value) root.dx = size[0], root.dy = size[1]; else root.dx = root.dy = 0;
paulo@89	7350 if (stickies) hierarchy.revalue(root);
paulo@89	7351 scale([ root ], root.dx * root.dy / root.value);
paulo@89	7352 (stickies ? stickify : squarify)(root);
paulo@89	7353 if (sticky) stickies = nodes;
paulo@89	7354 return nodes;
paulo@89	7355 }
paulo@89	7356 treemap.size = function(x) {
paulo@89	7357 if (!arguments.length) return size;
paulo@89	7358 size = x;
paulo@89	7359 return treemap;
paulo@89	7360 };
paulo@89	7361 treemap.padding = function(x) {
paulo@89	7362 if (!arguments.length) return padding;
paulo@89	7363 function padFunction(node) {
paulo@89	7364 var p = x.call(treemap, node, node.depth);
paulo@89	7365 return p == null ? d3_layout_treemapPadNull(node) : d3_layout_treemapPad(node, typeof p === "number" ? [ p, p, p, p ] : p);
paulo@89	7366 }
paulo@89	7367 function padConstant(node) {
paulo@89	7368 return d3_layout_treemapPad(node, x);
paulo@89	7369 }
paulo@89	7370 var type;
paulo@89	7371 pad = (padding = x) == null ? d3_layout_treemapPadNull : (type = typeof x) === "function" ? padFunction : type === "number" ? (x = [ x, x, x, x ],
paulo@89	7372 padConstant) : padConstant;
paulo@89	7373 return treemap;
paulo@89	7374 };
paulo@89	7375 treemap.round = function(x) {
paulo@89	7376 if (!arguments.length) return round != Number;
paulo@89	7377 round = x ? Math.round : Number;
paulo@89	7378 return treemap;
paulo@89	7379 };
paulo@89	7380 treemap.sticky = function(x) {
paulo@89	7381 if (!arguments.length) return sticky;
paulo@89	7382 sticky = x;
paulo@89	7383 stickies = null;
paulo@89	7384 return treemap;
paulo@89	7385 };
paulo@89	7386 treemap.ratio = function(x) {
paulo@89	7387 if (!arguments.length) return ratio;
paulo@89	7388 ratio = x;
paulo@89	7389 return treemap;
paulo@89	7390 };
paulo@89	7391 treemap.mode = function(x) {
paulo@89	7392 if (!arguments.length) return mode;
paulo@89	7393 mode = x + "";
paulo@89	7394 return treemap;
paulo@89	7395 };
paulo@89	7396 return d3_layout_hierarchyRebind(treemap, hierarchy);
paulo@89	7397 };
paulo@89	7398 function d3_layout_treemapPadNull(node) {
paulo@89	7399 return {
paulo@89	7400 x: node.x,
paulo@89	7401 y: node.y,
paulo@89	7402 dx: node.dx,
paulo@89	7403 dy: node.dy
paulo@89	7404 };
paulo@89	7405 }
paulo@89	7406 function d3_layout_treemapPad(node, padding) {
paulo@89	7407 var x = node.x + padding[3], y = node.y + padding[0], dx = node.dx - padding[1] - padding[3], dy = node.dy - padding[0] - padding[2];
paulo@89	7408 if (dx < 0) {
paulo@89	7409 x += dx / 2;
paulo@89	7410 dx = 0;
paulo@89	7411 }
paulo@89	7412 if (dy < 0) {
paulo@89	7413 y += dy / 2;
paulo@89	7414 dy = 0;
paulo@89	7415 }
paulo@89	7416 return {
paulo@89	7417 x: x,
paulo@89	7418 y: y,
paulo@89	7419 dx: dx,
paulo@89	7420 dy: dy
paulo@89	7421 };
paulo@89	7422 }
paulo@89	7423 d3.random = {
paulo@89	7424 normal: function(µ, σ) {
paulo@89	7425 var n = arguments.length;
paulo@89	7426 if (n < 2) σ = 1;
paulo@89	7427 if (n < 1) µ = 0;
paulo@89	7428 return function() {
paulo@89	7429 var x, y, r;
paulo@89	7430 do {
paulo@89	7431 x = Math.random() * 2 - 1;
paulo@89	7432 y = Math.random() * 2 - 1;
paulo@89	7433 r = x * x + y * y;
paulo@89	7434 } while (!r \|\| r > 1);
paulo@89	7435 return µ + σ * x * Math.sqrt(-2 * Math.log(r) / r);
paulo@89	7436 };
paulo@89	7437 },
paulo@89	7438 logNormal: function() {
paulo@89	7439 var random = d3.random.normal.apply(d3, arguments);
paulo@89	7440 return function() {
paulo@89	7441 return Math.exp(random());
paulo@89	7442 };
paulo@89	7443 },
paulo@89	7444 bates: function(m) {
paulo@89	7445 var random = d3.random.irwinHall(m);
paulo@89	7446 return function() {
paulo@89	7447 return random() / m;
paulo@89	7448 };
paulo@89	7449 },
paulo@89	7450 irwinHall: function(m) {
paulo@89	7451 return function() {
paulo@89	7452 for (var s = 0, j = 0; j < m; j++) s += Math.random();
paulo@89	7453 return s;
paulo@89	7454 };
paulo@89	7455 }
paulo@89	7456 };
paulo@89	7457 d3.scale = {};
paulo@89	7458 function d3_scaleExtent(domain) {
paulo@89	7459 var start = domain[0], stop = domain[domain.length - 1];
paulo@89	7460 return start < stop ? [ start, stop ] : [ stop, start ];
paulo@89	7461 }
paulo@89	7462 function d3_scaleRange(scale) {
paulo@89	7463 return scale.rangeExtent ? scale.rangeExtent() : d3_scaleExtent(scale.range());
paulo@89	7464 }
paulo@89	7465 function d3_scale_bilinear(domain, range, uninterpolate, interpolate) {
paulo@89	7466 var u = uninterpolate(domain[0], domain[1]), i = interpolate(range[0], range[1]);
paulo@89	7467 return function(x) {
paulo@89	7468 return i(u(x));
paulo@89	7469 };
paulo@89	7470 }
paulo@89	7471 function d3_scale_nice(domain, nice) {
paulo@89	7472 var i0 = 0, i1 = domain.length - 1, x0 = domain[i0], x1 = domain[i1], dx;
paulo@89	7473 if (x1 < x0) {
paulo@89	7474 dx = i0, i0 = i1, i1 = dx;
paulo@89	7475 dx = x0, x0 = x1, x1 = dx;
paulo@89	7476 }
paulo@89	7477 domain[i0] = nice.floor(x0);
paulo@89	7478 domain[i1] = nice.ceil(x1);
paulo@89	7479 return domain;
paulo@89	7480 }
paulo@89	7481 function d3_scale_niceStep(step) {
paulo@89	7482 return step ? {
paulo@89	7483 floor: function(x) {
paulo@89	7484 return Math.floor(x / step) * step;
paulo@89	7485 },
paulo@89	7486 ceil: function(x) {
paulo@89	7487 return Math.ceil(x / step) * step;
paulo@89	7488 }
paulo@89	7489 } : d3_scale_niceIdentity;
paulo@89	7490 }
paulo@89	7491 var d3_scale_niceIdentity = {
paulo@89	7492 floor: d3_identity,
paulo@89	7493 ceil: d3_identity
paulo@89	7494 };
paulo@89	7495 function d3_scale_polylinear(domain, range, uninterpolate, interpolate) {
paulo@89	7496 var u = [], i = [], j = 0, k = Math.min(domain.length, range.length) - 1;
paulo@89	7497 if (domain[k] < domain[0]) {
paulo@89	7498 domain = domain.slice().reverse();
paulo@89	7499 range = range.slice().reverse();
paulo@89	7500 }
paulo@89	7501 while (++j <= k) {
paulo@89	7502 u.push(uninterpolate(domain[j - 1], domain[j]));
paulo@89	7503 i.push(interpolate(range[j - 1], range[j]));
paulo@89	7504 }
paulo@89	7505 return function(x) {
paulo@89	7506 var j = d3.bisect(domain, x, 1, k) - 1;
paulo@89	7507 return i[j](u[j](x));
paulo@89	7508 };
paulo@89	7509 }
paulo@89	7510 d3.scale.linear = function() {
paulo@89	7511 return d3_scale_linear([ 0, 1 ], [ 0, 1 ], d3_interpolate, false);
paulo@89	7512 };
paulo@89	7513 function d3_scale_linear(domain, range, interpolate, clamp) {
paulo@89	7514 var output, input;
paulo@89	7515 function rescale() {
paulo@89	7516 var linear = Math.min(domain.length, range.length) > 2 ? d3_scale_polylinear : d3_scale_bilinear, uninterpolate = clamp ? d3_uninterpolateClamp : d3_uninterpolateNumber;
paulo@89	7517 output = linear(domain, range, uninterpolate, interpolate);
paulo@89	7518 input = linear(range, domain, uninterpolate, d3_interpolate);
paulo@89	7519 return scale;
paulo@89	7520 }
paulo@89	7521 function scale(x) {
paulo@89	7522 return output(x);
paulo@89	7523 }
paulo@89	7524 scale.invert = function(y) {
paulo@89	7525 return input(y);
paulo@89	7526 };
paulo@89	7527 scale.domain = function(x) {
paulo@89	7528 if (!arguments.length) return domain;
paulo@89	7529 domain = x.map(Number);
paulo@89	7530 return rescale();
paulo@89	7531 };
paulo@89	7532 scale.range = function(x) {
paulo@89	7533 if (!arguments.length) return range;
paulo@89	7534 range = x;
paulo@89	7535 return rescale();
paulo@89	7536 };
paulo@89	7537 scale.rangeRound = function(x) {
paulo@89	7538 return scale.range(x).interpolate(d3_interpolateRound);
paulo@89	7539 };
paulo@89	7540 scale.clamp = function(x) {
paulo@89	7541 if (!arguments.length) return clamp;
paulo@89	7542 clamp = x;
paulo@89	7543 return rescale();
paulo@89	7544 };
paulo@89	7545 scale.interpolate = function(x) {
paulo@89	7546 if (!arguments.length) return interpolate;
paulo@89	7547 interpolate = x;
paulo@89	7548 return rescale();
paulo@89	7549 };
paulo@89	7550 scale.ticks = function(m) {
paulo@89	7551 return d3_scale_linearTicks(domain, m);
paulo@89	7552 };
paulo@89	7553 scale.tickFormat = function(m, format) {
paulo@89	7554 return d3_scale_linearTickFormat(domain, m, format);
paulo@89	7555 };
paulo@89	7556 scale.nice = function(m) {
paulo@89	7557 d3_scale_linearNice(domain, m);
paulo@89	7558 return rescale();
paulo@89	7559 };
paulo@89	7560 scale.copy = function() {
paulo@89	7561 return d3_scale_linear(domain, range, interpolate, clamp);
paulo@89	7562 };
paulo@89	7563 return rescale();
paulo@89	7564 }
paulo@89	7565 function d3_scale_linearRebind(scale, linear) {
paulo@89	7566 return d3.rebind(scale, linear, "range", "rangeRound", "interpolate", "clamp");
paulo@89	7567 }
paulo@89	7568 function d3_scale_linearNice(domain, m) {
paulo@89	7569 d3_scale_nice(domain, d3_scale_niceStep(d3_scale_linearTickRange(domain, m)[2]));
paulo@89	7570 d3_scale_nice(domain, d3_scale_niceStep(d3_scale_linearTickRange(domain, m)[2]));
paulo@89	7571 return domain;
paulo@89	7572 }
paulo@89	7573 function d3_scale_linearTickRange(domain, m) {
paulo@89	7574 if (m == null) m = 10;
paulo@89	7575 var extent = d3_scaleExtent(domain), span = extent[1] - extent[0], step = Math.pow(10, Math.floor(Math.log(span / m) / Math.LN10)), err = m / span * step;
paulo@89	7576 if (err <= .15) step = 10; else if (err <= .35) step = 5; else if (err <= .75) step *= 2;
paulo@89	7577 extent[0] = Math.ceil(extent[0] / step) * step;
paulo@89	7578 extent[1] = Math.floor(extent[1] / step) * step + step * .5;
paulo@89	7579 extent[2] = step;
paulo@89	7580 return extent;
paulo@89	7581 }
paulo@89	7582 function d3_scale_linearTicks(domain, m) {
paulo@89	7583 return d3.range.apply(d3, d3_scale_linearTickRange(domain, m));
paulo@89	7584 }
paulo@89	7585 function d3_scale_linearTickFormat(domain, m, format) {
paulo@89	7586 var range = d3_scale_linearTickRange(domain, m);
paulo@89	7587 if (format) {
paulo@89	7588 var match = d3_format_re.exec(format);
paulo@89	7589 match.shift();
paulo@89	7590 if (match[8] === "s") {
paulo@89	7591 var prefix = d3.formatPrefix(Math.max(abs(range[0]), abs(range[1])));
paulo@89	7592 if (!match[7]) match[7] = "." + d3_scale_linearPrecision(prefix.scale(range[2]));
paulo@89	7593 match[8] = "f";
paulo@89	7594 format = d3.format(match.join(""));
paulo@89	7595 return function(d) {
paulo@89	7596 return format(prefix.scale(d)) + prefix.symbol;
paulo@89	7597 };
paulo@89	7598 }
paulo@89	7599 if (!match[7]) match[7] = "." + d3_scale_linearFormatPrecision(match[8], range);
paulo@89	7600 format = match.join("");
paulo@89	7601 } else {
paulo@89	7602 format = ",." + d3_scale_linearPrecision(range[2]) + "f";
paulo@89	7603 }
paulo@89	7604 return d3.format(format);
paulo@89	7605 }
paulo@89	7606 var d3_scale_linearFormatSignificant = {
paulo@89	7607 s: 1,
paulo@89	7608 g: 1,
paulo@89	7609 p: 1,
paulo@89	7610 r: 1,
paulo@89	7611 e: 1
paulo@89	7612 };
paulo@89	7613 function d3_scale_linearPrecision(value) {
paulo@89	7614 return -Math.floor(Math.log(value) / Math.LN10 + .01);
paulo@89	7615 }
paulo@89	7616 function d3_scale_linearFormatPrecision(type, range) {
paulo@89	7617 var p = d3_scale_linearPrecision(range[2]);
paulo@89	7618 return type in d3_scale_linearFormatSignificant ? Math.abs(p - d3_scale_linearPrecision(Math.max(abs(range[0]), abs(range[1])))) + +(type !== "e") : p - (type === "%") * 2;
paulo@89	7619 }
paulo@89	7620 d3.scale.log = function() {
paulo@89	7621 return d3_scale_log(d3.scale.linear().domain([ 0, 1 ]), 10, true, [ 1, 10 ]);
paulo@89	7622 };
paulo@89	7623 function d3_scale_log(linear, base, positive, domain) {
paulo@89	7624 function log(x) {
paulo@89	7625 return (positive ? Math.log(x < 0 ? 0 : x) : -Math.log(x > 0 ? 0 : -x)) / Math.log(base);
paulo@89	7626 }
paulo@89	7627 function pow(x) {
paulo@89	7628 return positive ? Math.pow(base, x) : -Math.pow(base, -x);
paulo@89	7629 }
paulo@89	7630 function scale(x) {
paulo@89	7631 return linear(log(x));
paulo@89	7632 }
paulo@89	7633 scale.invert = function(x) {
paulo@89	7634 return pow(linear.invert(x));
paulo@89	7635 };
paulo@89	7636 scale.domain = function(x) {
paulo@89	7637 if (!arguments.length) return domain;
paulo@89	7638 positive = x[0] >= 0;
paulo@89	7639 linear.domain((domain = x.map(Number)).map(log));
paulo@89	7640 return scale;
paulo@89	7641 };
paulo@89	7642 scale.base = function(_) {
paulo@89	7643 if (!arguments.length) return base;
paulo@89	7644 base = +_;
paulo@89	7645 linear.domain(domain.map(log));
paulo@89	7646 return scale;
paulo@89	7647 };
paulo@89	7648 scale.nice = function() {
paulo@89	7649 var niced = d3_scale_nice(domain.map(log), positive ? Math : d3_scale_logNiceNegative);
paulo@89	7650 linear.domain(niced);
paulo@89	7651 domain = niced.map(pow);
paulo@89	7652 return scale;
paulo@89	7653 };
paulo@89	7654 scale.ticks = function() {
paulo@89	7655 var extent = d3_scaleExtent(domain), ticks = [], u = extent[0], v = extent[1], i = Math.floor(log(u)), j = Math.ceil(log(v)), n = base % 1 ? 2 : base;
paulo@89	7656 if (isFinite(j - i)) {
paulo@89	7657 if (positive) {
paulo@89	7658 for (;i < j; i++) for (var k = 1; k < n; k++) ticks.push(pow(i) * k);
paulo@89	7659 ticks.push(pow(i));
paulo@89	7660 } else {
paulo@89	7661 ticks.push(pow(i));
paulo@89	7662 for (;i++ < j; ) for (var k = n - 1; k > 0; k--) ticks.push(pow(i) * k);
paulo@89	7663 }
paulo@89	7664 for (i = 0; ticks[i] < u; i++) {}
paulo@89	7665 for (j = ticks.length; ticks[j - 1] > v; j--) {}
paulo@89	7666 ticks = ticks.slice(i, j);
paulo@89	7667 }
paulo@89	7668 return ticks;
paulo@89	7669 };
paulo@89	7670 scale.tickFormat = function(n, format) {
paulo@89	7671 if (!arguments.length) return d3_scale_logFormat;
paulo@89	7672 if (arguments.length < 2) format = d3_scale_logFormat; else if (typeof format !== "function") format = d3.format(format);
paulo@89	7673 var k = Math.max(1, base * n / scale.ticks().length);
paulo@89	7674 return function(d) {
paulo@89	7675 var i = d / pow(Math.round(log(d)));
paulo@89	7676 if (i * base < base - .5) i *= base;
paulo@89	7677 return i <= k ? format(d) : "";
paulo@89	7678 };
paulo@89	7679 };
paulo@89	7680 scale.copy = function() {
paulo@89	7681 return d3_scale_log(linear.copy(), base, positive, domain);
paulo@89	7682 };
paulo@89	7683 return d3_scale_linearRebind(scale, linear);
paulo@89	7684 }
paulo@89	7685 var d3_scale_logFormat = d3.format(".0e"), d3_scale_logNiceNegative = {
paulo@89	7686 floor: function(x) {
paulo@89	7687 return -Math.ceil(-x);
paulo@89	7688 },
paulo@89	7689 ceil: function(x) {
paulo@89	7690 return -Math.floor(-x);
paulo@89	7691 }
paulo@89	7692 };
paulo@89	7693 d3.scale.pow = function() {
paulo@89	7694 return d3_scale_pow(d3.scale.linear(), 1, [ 0, 1 ]);
paulo@89	7695 };
paulo@89	7696 function d3_scale_pow(linear, exponent, domain) {
paulo@89	7697 var powp = d3_scale_powPow(exponent), powb = d3_scale_powPow(1 / exponent);
paulo@89	7698 function scale(x) {
paulo@89	7699 return linear(powp(x));
paulo@89	7700 }
paulo@89	7701 scale.invert = function(x) {
paulo@89	7702 return powb(linear.invert(x));
paulo@89	7703 };
paulo@89	7704 scale.domain = function(x) {
paulo@89	7705 if (!arguments.length) return domain;
paulo@89	7706 linear.domain((domain = x.map(Number)).map(powp));
paulo@89	7707 return scale;
paulo@89	7708 };
paulo@89	7709 scale.ticks = function(m) {
paulo@89	7710 return d3_scale_linearTicks(domain, m);
paulo@89	7711 };
paulo@89	7712 scale.tickFormat = function(m, format) {
paulo@89	7713 return d3_scale_linearTickFormat(domain, m, format);
paulo@89	7714 };
paulo@89	7715 scale.nice = function(m) {
paulo@89	7716 return scale.domain(d3_scale_linearNice(domain, m));
paulo@89	7717 };
paulo@89	7718 scale.exponent = function(x) {
paulo@89	7719 if (!arguments.length) return exponent;
paulo@89	7720 powp = d3_scale_powPow(exponent = x);
paulo@89	7721 powb = d3_scale_powPow(1 / exponent);
paulo@89	7722 linear.domain(domain.map(powp));
paulo@89	7723 return scale;
paulo@89	7724 };
paulo@89	7725 scale.copy = function() {
paulo@89	7726 return d3_scale_pow(linear.copy(), exponent, domain);
paulo@89	7727 };
paulo@89	7728 return d3_scale_linearRebind(scale, linear);
paulo@89	7729 }
paulo@89	7730 function d3_scale_powPow(e) {
paulo@89	7731 return function(x) {
paulo@89	7732 return x < 0 ? -Math.pow(-x, e) : Math.pow(x, e);
paulo@89	7733 };
paulo@89	7734 }
paulo@89	7735 d3.scale.sqrt = function() {
paulo@89	7736 return d3.scale.pow().exponent(.5);
paulo@89	7737 };
paulo@89	7738 d3.scale.ordinal = function() {
paulo@89	7739 return d3_scale_ordinal([], {
paulo@89	7740 t: "range",
paulo@89	7741 a: [ [] ]
paulo@89	7742 });
paulo@89	7743 };
paulo@89	7744 function d3_scale_ordinal(domain, ranger) {
paulo@89	7745 var index, range, rangeBand;
paulo@89	7746 function scale(x) {
paulo@89	7747 return range[((index.get(x) \|\| (ranger.t === "range" ? index.set(x, domain.push(x)) : NaN)) - 1) % range.length];
paulo@89	7748 }
paulo@89	7749 function steps(start, step) {
paulo@89	7750 return d3.range(domain.length).map(function(i) {
paulo@89	7751 return start + step * i;
paulo@89	7752 });
paulo@89	7753 }
paulo@89	7754 scale.domain = function(x) {
paulo@89	7755 if (!arguments.length) return domain;
paulo@89	7756 domain = [];
paulo@89	7757 index = new d3_Map();
paulo@89	7758 var i = -1, n = x.length, xi;
paulo@89	7759 while (++i < n) if (!index.has(xi = x[i])) index.set(xi, domain.push(xi));
paulo@89	7760 return scale[ranger.t].apply(scale, ranger.a);
paulo@89	7761 };
paulo@89	7762 scale.range = function(x) {
paulo@89	7763 if (!arguments.length) return range;
paulo@89	7764 range = x;
paulo@89	7765 rangeBand = 0;
paulo@89	7766 ranger = {
paulo@89	7767 t: "range",
paulo@89	7768 a: arguments
paulo@89	7769 };
paulo@89	7770 return scale;
paulo@89	7771 };
paulo@89	7772 scale.rangePoints = function(x, padding) {
paulo@89	7773 if (arguments.length < 2) padding = 0;
paulo@89	7774 var start = x[0], stop = x[1], step = domain.length < 2 ? (start = (start + stop) / 2,
paulo@89	7775 0) : (stop - start) / (domain.length - 1 + padding);
paulo@89	7776 range = steps(start + step * padding / 2, step);
paulo@89	7777 rangeBand = 0;
paulo@89	7778 ranger = {
paulo@89	7779 t: "rangePoints",
paulo@89	7780 a: arguments
paulo@89	7781 };
paulo@89	7782 return scale;
paulo@89	7783 };
paulo@89	7784 scale.rangeRoundPoints = function(x, padding) {
paulo@89	7785 if (arguments.length < 2) padding = 0;
paulo@89	7786 var start = x[0], stop = x[1], step = domain.length < 2 ? (start = stop = Math.round((start + stop) / 2),
paulo@89	7787 0) : (stop - start) / (domain.length - 1 + padding) \| 0;
paulo@89	7788 range = steps(start + Math.round(step * padding / 2 + (stop - start - (domain.length - 1 + padding) * step) / 2), step);
paulo@89	7789 rangeBand = 0;
paulo@89	7790 ranger = {
paulo@89	7791 t: "rangeRoundPoints",
paulo@89	7792 a: arguments
paulo@89	7793 };
paulo@89	7794 return scale;
paulo@89	7795 };
paulo@89	7796 scale.rangeBands = function(x, padding, outerPadding) {
paulo@89	7797 if (arguments.length < 2) padding = 0;
paulo@89	7798 if (arguments.length < 3) outerPadding = padding;
paulo@89	7799 var reverse = x[1] < x[0], start = x[reverse - 0], stop = x[1 - reverse], step = (stop - start) / (domain.length - padding + 2 * outerPadding);
paulo@89	7800 range = steps(start + step * outerPadding, step);
paulo@89	7801 if (reverse) range.reverse();
paulo@89	7802 rangeBand = step * (1 - padding);
paulo@89	7803 ranger = {
paulo@89	7804 t: "rangeBands",
paulo@89	7805 a: arguments
paulo@89	7806 };
paulo@89	7807 return scale;
paulo@89	7808 };
paulo@89	7809 scale.rangeRoundBands = function(x, padding, outerPadding) {
paulo@89	7810 if (arguments.length < 2) padding = 0;
paulo@89	7811 if (arguments.length < 3) outerPadding = padding;
paulo@89	7812 var reverse = x[1] < x[0], start = x[reverse - 0], stop = x[1 - reverse], step = Math.floor((stop - start) / (domain.length - padding + 2 * outerPadding));
paulo@89	7813 range = steps(start + Math.round((stop - start - (domain.length - padding) * step) / 2), step);
paulo@89	7814 if (reverse) range.reverse();
paulo@89	7815 rangeBand = Math.round(step * (1 - padding));
paulo@89	7816 ranger = {
paulo@89	7817 t: "rangeRoundBands",
paulo@89	7818 a: arguments
paulo@89	7819 };
paulo@89	7820 return scale;
paulo@89	7821 };
paulo@89	7822 scale.rangeBand = function() {
paulo@89	7823 return rangeBand;
paulo@89	7824 };
paulo@89	7825 scale.rangeExtent = function() {
paulo@89	7826 return d3_scaleExtent(ranger.a[0]);
paulo@89	7827 };
paulo@89	7828 scale.copy = function() {
paulo@89	7829 return d3_scale_ordinal(domain, ranger);
paulo@89	7830 };
paulo@89	7831 return scale.domain(domain);
paulo@89	7832 }
paulo@89	7833 d3.scale.category10 = function() {
paulo@89	7834 return d3.scale.ordinal().range(d3_category10);
paulo@89	7835 };
paulo@89	7836 d3.scale.category20 = function() {
paulo@89	7837 return d3.scale.ordinal().range(d3_category20);
paulo@89	7838 };
paulo@89	7839 d3.scale.category20b = function() {
paulo@89	7840 return d3.scale.ordinal().range(d3_category20b);
paulo@89	7841 };
paulo@89	7842 d3.scale.category20c = function() {
paulo@89	7843 return d3.scale.ordinal().range(d3_category20c);
paulo@89	7844 };
paulo@89	7845 var d3_category10 = [ 2062260, 16744206, 2924588, 14034728, 9725885, 9197131, 14907330, 8355711, 12369186, 1556175 ].map(d3_rgbString);
paulo@89	7846 var d3_category20 = [ 2062260, 11454440, 16744206, 16759672, 2924588, 10018698, 14034728, 16750742, 9725885, 12955861, 9197131, 12885140, 14907330, 16234194, 8355711, 13092807, 12369186, 14408589, 1556175, 10410725 ].map(d3_rgbString);
paulo@89	7847 var d3_category20b = [ 3750777, 5395619, 7040719, 10264286, 6519097, 9216594, 11915115, 13556636, 9202993, 12426809, 15186514, 15190932, 8666169, 11356490, 14049643, 15177372, 8077683, 10834324, 13528509, 14589654 ].map(d3_rgbString);
paulo@89	7848 var d3_category20c = [ 3244733, 7057110, 10406625, 13032431, 15095053, 16616764, 16625259, 16634018, 3253076, 7652470, 10607003, 13101504, 7695281, 10394312, 12369372, 14342891, 6513507, 9868950, 12434877, 14277081 ].map(d3_rgbString);
paulo@89	7849 d3.scale.quantile = function() {
paulo@89	7850 return d3_scale_quantile([], []);
paulo@89	7851 };
paulo@89	7852 function d3_scale_quantile(domain, range) {
paulo@89	7853 var thresholds;
paulo@89	7854 function rescale() {
paulo@89	7855 var k = 0, q = range.length;
paulo@89	7856 thresholds = [];
paulo@89	7857 while (++k < q) thresholds[k - 1] = d3.quantile(domain, k / q);
paulo@89	7858 return scale;
paulo@89	7859 }
paulo@89	7860 function scale(x) {
paulo@89	7861 if (!isNaN(x = +x)) return range[d3.bisect(thresholds, x)];
paulo@89	7862 }
paulo@89	7863 scale.domain = function(x) {
paulo@89	7864 if (!arguments.length) return domain;
paulo@89	7865 domain = x.map(d3_number).filter(d3_numeric).sort(d3_ascending);
paulo@89	7866 return rescale();
paulo@89	7867 };
paulo@89	7868 scale.range = function(x) {
paulo@89	7869 if (!arguments.length) return range;
paulo@89	7870 range = x;
paulo@89	7871 return rescale();
paulo@89	7872 };
paulo@89	7873 scale.quantiles = function() {
paulo@89	7874 return thresholds;
paulo@89	7875 };
paulo@89	7876 scale.invertExtent = function(y) {
paulo@89	7877 y = range.indexOf(y);
paulo@89	7878 return y < 0 ? [ NaN, NaN ] : [ y > 0 ? thresholds[y - 1] : domain[0], y < thresholds.length ? thresholds[y] : domain[domain.length - 1] ];
paulo@89	7879 };
paulo@89	7880 scale.copy = function() {
paulo@89	7881 return d3_scale_quantile(domain, range);
paulo@89	7882 };
paulo@89	7883 return rescale();
paulo@89	7884 }
paulo@89	7885 d3.scale.quantize = function() {
paulo@89	7886 return d3_scale_quantize(0, 1, [ 0, 1 ]);
paulo@89	7887 };
paulo@89	7888 function d3_scale_quantize(x0, x1, range) {
paulo@89	7889 var kx, i;
paulo@89	7890 function scale(x) {
paulo@89	7891 return range[Math.max(0, Math.min(i, Math.floor(kx * (x - x0))))];
paulo@89	7892 }
paulo@89	7893 function rescale() {
paulo@89	7894 kx = range.length / (x1 - x0);
paulo@89	7895 i = range.length - 1;
paulo@89	7896 return scale;
paulo@89	7897 }
paulo@89	7898 scale.domain = function(x) {
paulo@89	7899 if (!arguments.length) return [ x0, x1 ];
paulo@89	7900 x0 = +x[0];
paulo@89	7901 x1 = +x[x.length - 1];
paulo@89	7902 return rescale();
paulo@89	7903 };
paulo@89	7904 scale.range = function(x) {
paulo@89	7905 if (!arguments.length) return range;
paulo@89	7906 range = x;
paulo@89	7907 return rescale();
paulo@89	7908 };
paulo@89	7909 scale.invertExtent = function(y) {
paulo@89	7910 y = range.indexOf(y);
paulo@89	7911 y = y < 0 ? NaN : y / kx + x0;
paulo@89	7912 return [ y, y + 1 / kx ];
paulo@89	7913 };
paulo@89	7914 scale.copy = function() {
paulo@89	7915 return d3_scale_quantize(x0, x1, range);
paulo@89	7916 };
paulo@89	7917 return rescale();
paulo@89	7918 }
paulo@89	7919 d3.scale.threshold = function() {
paulo@89	7920 return d3_scale_threshold([ .5 ], [ 0, 1 ]);
paulo@89	7921 };
paulo@89	7922 function d3_scale_threshold(domain, range) {
paulo@89	7923 function scale(x) {
paulo@89	7924 if (x <= x) return range[d3.bisect(domain, x)];
paulo@89	7925 }
paulo@89	7926 scale.domain = function(_) {
paulo@89	7927 if (!arguments.length) return domain;
paulo@89	7928 domain = _;
paulo@89	7929 return scale;
paulo@89	7930 };
paulo@89	7931 scale.range = function(_) {
paulo@89	7932 if (!arguments.length) return range;
paulo@89	7933 range = _;
paulo@89	7934 return scale;
paulo@89	7935 };
paulo@89	7936 scale.invertExtent = function(y) {
paulo@89	7937 y = range.indexOf(y);
paulo@89	7938 return [ domain[y - 1], domain[y] ];
paulo@89	7939 };
paulo@89	7940 scale.copy = function() {
paulo@89	7941 return d3_scale_threshold(domain, range);
paulo@89	7942 };
paulo@89	7943 return scale;
paulo@89	7944 }
paulo@89	7945 d3.scale.identity = function() {
paulo@89	7946 return d3_scale_identity([ 0, 1 ]);
paulo@89	7947 };
paulo@89	7948 function d3_scale_identity(domain) {
paulo@89	7949 function identity(x) {
paulo@89	7950 return +x;
paulo@89	7951 }
paulo@89	7952 identity.invert = identity;
paulo@89	7953 identity.domain = identity.range = function(x) {
paulo@89	7954 if (!arguments.length) return domain;
paulo@89	7955 domain = x.map(identity);
paulo@89	7956 return identity;
paulo@89	7957 };
paulo@89	7958 identity.ticks = function(m) {
paulo@89	7959 return d3_scale_linearTicks(domain, m);
paulo@89	7960 };
paulo@89	7961 identity.tickFormat = function(m, format) {
paulo@89	7962 return d3_scale_linearTickFormat(domain, m, format);
paulo@89	7963 };
paulo@89	7964 identity.copy = function() {
paulo@89	7965 return d3_scale_identity(domain);
paulo@89	7966 };
paulo@89	7967 return identity;
paulo@89	7968 }
paulo@89	7969 d3.svg = {};
paulo@89	7970 function d3_zero() {
paulo@89	7971 return 0;
paulo@89	7972 }
paulo@89	7973 d3.svg.arc = function() {
paulo@89	7974 var innerRadius = d3_svg_arcInnerRadius, outerRadius = d3_svg_arcOuterRadius, cornerRadius = d3_zero, padRadius = d3_svg_arcAuto, startAngle = d3_svg_arcStartAngle, endAngle = d3_svg_arcEndAngle, padAngle = d3_svg_arcPadAngle;
paulo@89	7975 function arc() {
paulo@89	7976 var r0 = Math.max(0, +innerRadius.apply(this, arguments)), r1 = Math.max(0, +outerRadius.apply(this, arguments)), a0 = startAngle.apply(this, arguments) - halfπ, a1 = endAngle.apply(this, arguments) - halfπ, da = Math.abs(a1 - a0), cw = a0 > a1 ? 0 : 1;
paulo@89	7977 if (r1 < r0) rc = r1, r1 = r0, r0 = rc;
paulo@89	7978 if (da >= τε) return circleSegment(r1, cw) + (r0 ? circleSegment(r0, 1 - cw) : "") + "Z";
paulo@89	7979 var rc, cr, rp, ap, p0 = 0, p1 = 0, x0, y0, x1, y1, x2, y2, x3, y3, path = [];
paulo@89	7980 if (ap = (+padAngle.apply(this, arguments) \|\| 0) / 2) {
paulo@89	7981 rp = padRadius === d3_svg_arcAuto ? Math.sqrt(r0 * r0 + r1 * r1) : +padRadius.apply(this, arguments);
paulo@89	7982 if (!cw) p1 *= -1;
paulo@89	7983 if (r1) p1 = d3_asin(rp / r1 * Math.sin(ap));
paulo@89	7984 if (r0) p0 = d3_asin(rp / r0 * Math.sin(ap));
paulo@89	7985 }
paulo@89	7986 if (r1) {
paulo@89	7987 x0 = r1 * Math.cos(a0 + p1);
paulo@89	7988 y0 = r1 * Math.sin(a0 + p1);
paulo@89	7989 x1 = r1 * Math.cos(a1 - p1);
paulo@89	7990 y1 = r1 * Math.sin(a1 - p1);
paulo@89	7991 var l1 = Math.abs(a1 - a0 - 2 * p1) <= π ? 0 : 1;
paulo@89	7992 if (p1 && d3_svg_arcSweep(x0, y0, x1, y1) === cw ^ l1) {
paulo@89	7993 var h1 = (a0 + a1) / 2;
paulo@89	7994 x0 = r1 * Math.cos(h1);
paulo@89	7995 y0 = r1 * Math.sin(h1);
paulo@89	7996 x1 = y1 = null;
paulo@89	7997 }
paulo@89	7998 } else {
paulo@89	7999 x0 = y0 = 0;
paulo@89	8000 }
paulo@89	8001 if (r0) {
paulo@89	8002 x2 = r0 * Math.cos(a1 - p0);
paulo@89	8003 y2 = r0 * Math.sin(a1 - p0);
paulo@89	8004 x3 = r0 * Math.cos(a0 + p0);
paulo@89	8005 y3 = r0 * Math.sin(a0 + p0);
paulo@89	8006 var l0 = Math.abs(a0 - a1 + 2 * p0) <= π ? 0 : 1;
paulo@89	8007 if (p0 && d3_svg_arcSweep(x2, y2, x3, y3) === 1 - cw ^ l0) {
paulo@89	8008 var h0 = (a0 + a1) / 2;
paulo@89	8009 x2 = r0 * Math.cos(h0);
paulo@89	8010 y2 = r0 * Math.sin(h0);
paulo@89	8011 x3 = y3 = null;
paulo@89	8012 }
paulo@89	8013 } else {
paulo@89	8014 x2 = y2 = 0;
paulo@89	8015 }
paulo@89	8016 if (da > ε && (rc = Math.min(Math.abs(r1 - r0) / 2, +cornerRadius.apply(this, arguments))) > .001) {
paulo@89	8017 cr = r0 < r1 ^ cw ? 0 : 1;
paulo@89	8018 var rc1 = rc, rc0 = rc;
paulo@89	8019 if (da < π) {
paulo@89	8020 var oc = x3 == null ? [ x2, y2 ] : x1 == null ? [ x0, y0 ] : d3_geom_polygonIntersect([ x0, y0 ], [ x3, y3 ], [ x1, y1 ], [ x2, y2 ]), ax = x0 - oc[0], ay = y0 - oc[1], bx = x1 - oc[0], by = y1 - oc[1], kc = 1 / Math.sin(Math.acos((ax * bx + ay * by) / (Math.sqrt(ax * ax + ay * ay) * Math.sqrt(bx * bx + by * by))) / 2), lc = Math.sqrt(oc[0] * oc[0] + oc[1] * oc[1]);
paulo@89	8021 rc0 = Math.min(rc, (r0 - lc) / (kc - 1));
paulo@89	8022 rc1 = Math.min(rc, (r1 - lc) / (kc + 1));
paulo@89	8023 }
paulo@89	8024 if (x1 != null) {
paulo@89	8025 var t30 = d3_svg_arcCornerTangents(x3 == null ? [ x2, y2 ] : [ x3, y3 ], [ x0, y0 ], r1, rc1, cw), t12 = d3_svg_arcCornerTangents([ x1, y1 ], [ x2, y2 ], r1, rc1, cw);
paulo@89	8026 if (rc === rc1) {
paulo@89	8027 path.push("M", t30[0], "A", rc1, ",", rc1, " 0 0,", cr, " ", t30[1], "A", r1, ",", r1, " 0 ", 1 - cw ^ d3_svg_arcSweep(t30[1][0], t30[1][1], t12[1][0], t12[1][1]), ",", cw, " ", t12[1], "A", rc1, ",", rc1, " 0 0,", cr, " ", t12[0]);
paulo@89	8028 } else {
paulo@89	8029 path.push("M", t30[0], "A", rc1, ",", rc1, " 0 1,", cr, " ", t12[0]);
paulo@89	8030 }
paulo@89	8031 } else {
paulo@89	8032 path.push("M", x0, ",", y0);
paulo@89	8033 }
paulo@89	8034 if (x3 != null) {
paulo@89	8035 var t03 = d3_svg_arcCornerTangents([ x0, y0 ], [ x3, y3 ], r0, -rc0, cw), t21 = d3_svg_arcCornerTangents([ x2, y2 ], x1 == null ? [ x0, y0 ] : [ x1, y1 ], r0, -rc0, cw);
paulo@89	8036 if (rc === rc0) {
paulo@89	8037 path.push("L", t21[0], "A", rc0, ",", rc0, " 0 0,", cr, " ", t21[1], "A", r0, ",", r0, " 0 ", cw ^ d3_svg_arcSweep(t21[1][0], t21[1][1], t03[1][0], t03[1][1]), ",", 1 - cw, " ", t03[1], "A", rc0, ",", rc0, " 0 0,", cr, " ", t03[0]);
paulo@89	8038 } else {
paulo@89	8039 path.push("L", t21[0], "A", rc0, ",", rc0, " 0 0,", cr, " ", t03[0]);
paulo@89	8040 }
paulo@89	8041 } else {
paulo@89	8042 path.push("L", x2, ",", y2);
paulo@89	8043 }
paulo@89	8044 } else {
paulo@89	8045 path.push("M", x0, ",", y0);
paulo@89	8046 if (x1 != null) path.push("A", r1, ",", r1, " 0 ", l1, ",", cw, " ", x1, ",", y1);
paulo@89	8047 path.push("L", x2, ",", y2);
paulo@89	8048 if (x3 != null) path.push("A", r0, ",", r0, " 0 ", l0, ",", 1 - cw, " ", x3, ",", y3);
paulo@89	8049 }
paulo@89	8050 path.push("Z");
paulo@89	8051 return path.join("");
paulo@89	8052 }
paulo@89	8053 function circleSegment(r1, cw) {
paulo@89	8054 return "M0," + r1 + "A" + r1 + "," + r1 + " 0 1," + cw + " 0," + -r1 + "A" + r1 + "," + r1 + " 0 1," + cw + " 0," + r1;
paulo@89	8055 }
paulo@89	8056 arc.innerRadius = function(v) {
paulo@89	8057 if (!arguments.length) return innerRadius;
paulo@89	8058 innerRadius = d3_functor(v);
paulo@89	8059 return arc;
paulo@89	8060 };
paulo@89	8061 arc.outerRadius = function(v) {
paulo@89	8062 if (!arguments.length) return outerRadius;
paulo@89	8063 outerRadius = d3_functor(v);
paulo@89	8064 return arc;
paulo@89	8065 };
paulo@89	8066 arc.cornerRadius = function(v) {
paulo@89	8067 if (!arguments.length) return cornerRadius;
paulo@89	8068 cornerRadius = d3_functor(v);
paulo@89	8069 return arc;
paulo@89	8070 };
paulo@89	8071 arc.padRadius = function(v) {
paulo@89	8072 if (!arguments.length) return padRadius;
paulo@89	8073 padRadius = v == d3_svg_arcAuto ? d3_svg_arcAuto : d3_functor(v);
paulo@89	8074 return arc;
paulo@89	8075 };
paulo@89	8076 arc.startAngle = function(v) {
paulo@89	8077 if (!arguments.length) return startAngle;
paulo@89	8078 startAngle = d3_functor(v);
paulo@89	8079 return arc;
paulo@89	8080 };
paulo@89	8081 arc.endAngle = function(v) {
paulo@89	8082 if (!arguments.length) return endAngle;
paulo@89	8083 endAngle = d3_functor(v);
paulo@89	8084 return arc;
paulo@89	8085 };
paulo@89	8086 arc.padAngle = function(v) {
paulo@89	8087 if (!arguments.length) return padAngle;
paulo@89	8088 padAngle = d3_functor(v);
paulo@89	8089 return arc;
paulo@89	8090 };
paulo@89	8091 arc.centroid = function() {
paulo@89	8092 var r = (+innerRadius.apply(this, arguments) + +outerRadius.apply(this, arguments)) / 2, a = (+startAngle.apply(this, arguments) + +endAngle.apply(this, arguments)) / 2 - halfπ;
paulo@89	8093 return [ Math.cos(a) * r, Math.sin(a) * r ];
paulo@89	8094 };
paulo@89	8095 return arc;
paulo@89	8096 };
paulo@89	8097 var d3_svg_arcAuto = "auto";
paulo@89	8098 function d3_svg_arcInnerRadius(d) {
paulo@89	8099 return d.innerRadius;
paulo@89	8100 }
paulo@89	8101 function d3_svg_arcOuterRadius(d) {
paulo@89	8102 return d.outerRadius;
paulo@89	8103 }
paulo@89	8104 function d3_svg_arcStartAngle(d) {
paulo@89	8105 return d.startAngle;
paulo@89	8106 }
paulo@89	8107 function d3_svg_arcEndAngle(d) {
paulo@89	8108 return d.endAngle;
paulo@89	8109 }
paulo@89	8110 function d3_svg_arcPadAngle(d) {
paulo@89	8111 return d && d.padAngle;
paulo@89	8112 }
paulo@89	8113 function d3_svg_arcSweep(x0, y0, x1, y1) {
paulo@89	8114 return (x0 - x1) * y0 - (y0 - y1) * x0 > 0 ? 0 : 1;
paulo@89	8115 }
paulo@89	8116 function d3_svg_arcCornerTangents(p0, p1, r1, rc, cw) {
paulo@89	8117 var x01 = p0[0] - p1[0], y01 = p0[1] - p1[1], lo = (cw ? rc : -rc) / Math.sqrt(x01 * x01 + y01 * y01), ox = lo * y01, oy = -lo * x01, x1 = p0[0] + ox, y1 = p0[1] + oy, x2 = p1[0] + ox, y2 = p1[1] + oy, x3 = (x1 + x2) / 2, y3 = (y1 + y2) / 2, dx = x2 - x1, dy = y2 - y1, d2 = dx * dx + dy * dy, r = r1 - rc, D = x1 * y2 - x2 * y1, d = (dy < 0 ? -1 : 1) * Math.sqrt(Math.max(0, r * r * d2 - D * D)), cx0 = (D * dy - dx * d) / d2, cy0 = (-D * dx - dy * d) / d2, cx1 = (D * dy + dx * d) / d2, cy1 = (-D * dx + dy * d) / d2, dx0 = cx0 - x3, dy0 = cy0 - y3, dx1 = cx1 - x3, dy1 = cy1 - y3;
paulo@89	8118 if (dx0 * dx0 + dy0 * dy0 > dx1 * dx1 + dy1 * dy1) cx0 = cx1, cy0 = cy1;
paulo@89	8119 return [ [ cx0 - ox, cy0 - oy ], [ cx0 * r1 / r, cy0 * r1 / r ] ];
paulo@89	8120 }
paulo@89	8121 function d3_svg_line(projection) {
paulo@89	8122 var x = d3_geom_pointX, y = d3_geom_pointY, defined = d3_true, interpolate = d3_svg_lineLinear, interpolateKey = interpolate.key, tension = .7;
paulo@89	8123 function line(data) {
paulo@89	8124 var segments = [], points = [], i = -1, n = data.length, d, fx = d3_functor(x), fy = d3_functor(y);
paulo@89	8125 function segment() {
paulo@89	8126 segments.push("M", interpolate(projection(points), tension));
paulo@89	8127 }
paulo@89	8128 while (++i < n) {
paulo@89	8129 if (defined.call(this, d = data[i], i)) {
paulo@89	8130 points.push([ +fx.call(this, d, i), +fy.call(this, d, i) ]);
paulo@89	8131 } else if (points.length) {
paulo@89	8132 segment();
paulo@89	8133 points = [];
paulo@89	8134 }
paulo@89	8135 }
paulo@89	8136 if (points.length) segment();
paulo@89	8137 return segments.length ? segments.join("") : null;
paulo@89	8138 }
paulo@89	8139 line.x = function(_) {
paulo@89	8140 if (!arguments.length) return x;
paulo@89	8141 x = _;
paulo@89	8142 return line;
paulo@89	8143 };
paulo@89	8144 line.y = function(_) {
paulo@89	8145 if (!arguments.length) return y;
paulo@89	8146 y = _;
paulo@89	8147 return line;
paulo@89	8148 };
paulo@89	8149 line.defined = function(_) {
paulo@89	8150 if (!arguments.length) return defined;
paulo@89	8151 defined = _;
paulo@89	8152 return line;
paulo@89	8153 };
paulo@89	8154 line.interpolate = function(_) {
paulo@89	8155 if (!arguments.length) return interpolateKey;
paulo@89	8156 if (typeof _ === "function") interpolateKey = interpolate = _; else interpolateKey = (interpolate = d3_svg_lineInterpolators.get(_) \|\| d3_svg_lineLinear).key;
paulo@89	8157 return line;
paulo@89	8158 };
paulo@89	8159 line.tension = function(_) {
paulo@89	8160 if (!arguments.length) return tension;
paulo@89	8161 tension = _;
paulo@89	8162 return line;
paulo@89	8163 };
paulo@89	8164 return line;
paulo@89	8165 }
paulo@89	8166 d3.svg.line = function() {
paulo@89	8167 return d3_svg_line(d3_identity);
paulo@89	8168 };
paulo@89	8169 var d3_svg_lineInterpolators = d3.map({
paulo@89	8170 linear: d3_svg_lineLinear,
paulo@89	8171 "linear-closed": d3_svg_lineLinearClosed,
paulo@89	8172 step: d3_svg_lineStep,
paulo@89	8173 "step-before": d3_svg_lineStepBefore,
paulo@89	8174 "step-after": d3_svg_lineStepAfter,
paulo@89	8175 basis: d3_svg_lineBasis,
paulo@89	8176 "basis-open": d3_svg_lineBasisOpen,
paulo@89	8177 "basis-closed": d3_svg_lineBasisClosed,
paulo@89	8178 bundle: d3_svg_lineBundle,
paulo@89	8179 cardinal: d3_svg_lineCardinal,
paulo@89	8180 "cardinal-open": d3_svg_lineCardinalOpen,
paulo@89	8181 "cardinal-closed": d3_svg_lineCardinalClosed,
paulo@89	8182 monotone: d3_svg_lineMonotone
paulo@89	8183 });
paulo@89	8184 d3_svg_lineInterpolators.forEach(function(key, value) {
paulo@89	8185 value.key = key;
paulo@89	8186 value.closed = /-closed$/.test(key);
paulo@89	8187 });
paulo@89	8188 function d3_svg_lineLinear(points) {
paulo@89	8189 return points.length > 1 ? points.join("L") : points + "Z";
paulo@89	8190 }
paulo@89	8191 function d3_svg_lineLinearClosed(points) {
paulo@89	8192 return points.join("L") + "Z";
paulo@89	8193 }
paulo@89	8194 function d3_svg_lineStep(points) {
paulo@89	8195 var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
paulo@89	8196 while (++i < n) path.push("H", (p[0] + (p = points[i])[0]) / 2, "V", p[1]);
paulo@89	8197 if (n > 1) path.push("H", p[0]);
paulo@89	8198 return path.join("");
paulo@89	8199 }
paulo@89	8200 function d3_svg_lineStepBefore(points) {
paulo@89	8201 var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
paulo@89	8202 while (++i < n) path.push("V", (p = points[i])[1], "H", p[0]);
paulo@89	8203 return path.join("");
paulo@89	8204 }
paulo@89	8205 function d3_svg_lineStepAfter(points) {
paulo@89	8206 var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
paulo@89	8207 while (++i < n) path.push("H", (p = points[i])[0], "V", p[1]);
paulo@89	8208 return path.join("");
paulo@89	8209 }
paulo@89	8210 function d3_svg_lineCardinalOpen(points, tension) {
paulo@89	8211 return points.length < 4 ? d3_svg_lineLinear(points) : points[1] + d3_svg_lineHermite(points.slice(1, -1), d3_svg_lineCardinalTangents(points, tension));
paulo@89	8212 }
paulo@89	8213 function d3_svg_lineCardinalClosed(points, tension) {
paulo@89	8214 return points.length < 3 ? d3_svg_lineLinearClosed(points) : points[0] + d3_svg_lineHermite((points.push(points[0]),
paulo@89	8215 points), d3_svg_lineCardinalTangents([ points[points.length - 2] ].concat(points, [ points[1] ]), tension));
paulo@89	8216 }
paulo@89	8217 function d3_svg_lineCardinal(points, tension) {
paulo@89	8218 return points.length < 3 ? d3_svg_lineLinear(points) : points[0] + d3_svg_lineHermite(points, d3_svg_lineCardinalTangents(points, tension));
paulo@89	8219 }
paulo@89	8220 function d3_svg_lineHermite(points, tangents) {
paulo@89	8221 if (tangents.length < 1 \|\| points.length != tangents.length && points.length != tangents.length + 2) {
paulo@89	8222 return d3_svg_lineLinear(points);
paulo@89	8223 }
paulo@89	8224 var quad = points.length != tangents.length, path = "", p0 = points[0], p = points[1], t0 = tangents[0], t = t0, pi = 1;
paulo@89	8225 if (quad) {
paulo@89	8226 path += "Q" + (p[0] - t0[0] * 2 / 3) + "," + (p[1] - t0[1] * 2 / 3) + "," + p[0] + "," + p[1];
paulo@89	8227 p0 = points[1];
paulo@89	8228 pi = 2;
paulo@89	8229 }
paulo@89	8230 if (tangents.length > 1) {
paulo@89	8231 t = tangents[1];
paulo@89	8232 p = points[pi];
paulo@89	8233 pi++;
paulo@89	8234 path += "C" + (p0[0] + t0[0]) + "," + (p0[1] + t0[1]) + "," + (p[0] - t[0]) + "," + (p[1] - t[1]) + "," + p[0] + "," + p[1];
paulo@89	8235 for (var i = 2; i < tangents.length; i++, pi++) {
paulo@89	8236 p = points[pi];
paulo@89	8237 t = tangents[i];
paulo@89	8238 path += "S" + (p[0] - t[0]) + "," + (p[1] - t[1]) + "," + p[0] + "," + p[1];
paulo@89	8239 }
paulo@89	8240 }
paulo@89	8241 if (quad) {
paulo@89	8242 var lp = points[pi];
paulo@89	8243 path += "Q" + (p[0] + t[0] * 2 / 3) + "," + (p[1] + t[1] * 2 / 3) + "," + lp[0] + "," + lp[1];
paulo@89	8244 }
paulo@89	8245 return path;
paulo@89	8246 }
paulo@89	8247 function d3_svg_lineCardinalTangents(points, tension) {
paulo@89	8248 var tangents = [], a = (1 - tension) / 2, p0, p1 = points[0], p2 = points[1], i = 1, n = points.length;
paulo@89	8249 while (++i < n) {
paulo@89	8250 p0 = p1;
paulo@89	8251 p1 = p2;
paulo@89	8252 p2 = points[i];
paulo@89	8253 tangents.push([ a * (p2[0] - p0[0]), a * (p2[1] - p0[1]) ]);
paulo@89	8254 }
paulo@89	8255 return tangents;
paulo@89	8256 }
paulo@89	8257 function d3_svg_lineBasis(points) {
paulo@89	8258 if (points.length < 3) return d3_svg_lineLinear(points);
paulo@89	8259 var i = 1, n = points.length, pi = points[0], x0 = pi[0], y0 = pi[1], px = [ x0, x0, x0, (pi = points[1])[0] ], py = [ y0, y0, y0, pi[1] ], path = [ x0, ",", y0, "L", d3_svg_lineDot4(d3_svg_lineBasisBezier3, px), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, py) ];
paulo@89	8260 points.push(points[n - 1]);
paulo@89	8261 while (++i <= n) {
paulo@89	8262 pi = points[i];
paulo@89	8263 px.shift();
paulo@89	8264 px.push(pi[0]);
paulo@89	8265 py.shift();
paulo@89	8266 py.push(pi[1]);
paulo@89	8267 d3_svg_lineBasisBezier(path, px, py);
paulo@89	8268 }
paulo@89	8269 points.pop();
paulo@89	8270 path.push("L", pi);
paulo@89	8271 return path.join("");
paulo@89	8272 }
paulo@89	8273 function d3_svg_lineBasisOpen(points) {
paulo@89	8274 if (points.length < 4) return d3_svg_lineLinear(points);
paulo@89	8275 var path = [], i = -1, n = points.length, pi, px = [ 0 ], py = [ 0 ];
paulo@89	8276 while (++i < 3) {
paulo@89	8277 pi = points[i];
paulo@89	8278 px.push(pi[0]);
paulo@89	8279 py.push(pi[1]);
paulo@89	8280 }
paulo@89	8281 path.push(d3_svg_lineDot4(d3_svg_lineBasisBezier3, px) + "," + d3_svg_lineDot4(d3_svg_lineBasisBezier3, py));
paulo@89	8282 --i;
paulo@89	8283 while (++i < n) {
paulo@89	8284 pi = points[i];
paulo@89	8285 px.shift();
paulo@89	8286 px.push(pi[0]);
paulo@89	8287 py.shift();
paulo@89	8288 py.push(pi[1]);
paulo@89	8289 d3_svg_lineBasisBezier(path, px, py);
paulo@89	8290 }
paulo@89	8291 return path.join("");
paulo@89	8292 }
paulo@89	8293 function d3_svg_lineBasisClosed(points) {
paulo@89	8294 var path, i = -1, n = points.length, m = n + 4, pi, px = [], py = [];
paulo@89	8295 while (++i < 4) {
paulo@89	8296 pi = points[i % n];
paulo@89	8297 px.push(pi[0]);
paulo@89	8298 py.push(pi[1]);
paulo@89	8299 }
paulo@89	8300 path = [ d3_svg_lineDot4(d3_svg_lineBasisBezier3, px), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, py) ];
paulo@89	8301 --i;
paulo@89	8302 while (++i < m) {
paulo@89	8303 pi = points[i % n];
paulo@89	8304 px.shift();
paulo@89	8305 px.push(pi[0]);
paulo@89	8306 py.shift();
paulo@89	8307 py.push(pi[1]);
paulo@89	8308 d3_svg_lineBasisBezier(path, px, py);
paulo@89	8309 }
paulo@89	8310 return path.join("");
paulo@89	8311 }
paulo@89	8312 function d3_svg_lineBundle(points, tension) {
paulo@89	8313 var n = points.length - 1;
paulo@89	8314 if (n) {
paulo@89	8315 var x0 = points[0][0], y0 = points[0][1], dx = points[n][0] - x0, dy = points[n][1] - y0, i = -1, p, t;
paulo@89	8316 while (++i <= n) {
paulo@89	8317 p = points[i];
paulo@89	8318 t = i / n;
paulo@89	8319 p[0] = tension * p[0] + (1 - tension) * (x0 + t * dx);
paulo@89	8320 p[1] = tension * p[1] + (1 - tension) * (y0 + t * dy);
paulo@89	8321 }
paulo@89	8322 }
paulo@89	8323 return d3_svg_lineBasis(points);
paulo@89	8324 }
paulo@89	8325 function d3_svg_lineDot4(a, b) {
paulo@89	8326 return a[0] * b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3];
paulo@89	8327 }
paulo@89	8328 var d3_svg_lineBasisBezier1 = [ 0, 2 / 3, 1 / 3, 0 ], d3_svg_lineBasisBezier2 = [ 0, 1 / 3, 2 / 3, 0 ], d3_svg_lineBasisBezier3 = [ 0, 1 / 6, 2 / 3, 1 / 6 ];
paulo@89	8329 function d3_svg_lineBasisBezier(path, x, y) {
paulo@89	8330 path.push("C", d3_svg_lineDot4(d3_svg_lineBasisBezier1, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier1, y), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier2, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier2, y), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, y));
paulo@89	8331 }
paulo@89	8332 function d3_svg_lineSlope(p0, p1) {
paulo@89	8333 return (p1[1] - p0[1]) / (p1[0] - p0[0]);
paulo@89	8334 }
paulo@89	8335 function d3_svg_lineFiniteDifferences(points) {
paulo@89	8336 var i = 0, j = points.length - 1, m = [], p0 = points[0], p1 = points[1], d = m[0] = d3_svg_lineSlope(p0, p1);
paulo@89	8337 while (++i < j) {
paulo@89	8338 m[i] = (d + (d = d3_svg_lineSlope(p0 = p1, p1 = points[i + 1]))) / 2;
paulo@89	8339 }
paulo@89	8340 m[i] = d;
paulo@89	8341 return m;
paulo@89	8342 }
paulo@89	8343 function d3_svg_lineMonotoneTangents(points) {
paulo@89	8344 var tangents = [], d, a, b, s, m = d3_svg_lineFiniteDifferences(points), i = -1, j = points.length - 1;
paulo@89	8345 while (++i < j) {
paulo@89	8346 d = d3_svg_lineSlope(points[i], points[i + 1]);
paulo@89	8347 if (abs(d) < ε) {
paulo@89	8348 m[i] = m[i + 1] = 0;
paulo@89	8349 } else {
paulo@89	8350 a = m[i] / d;
paulo@89	8351 b = m[i + 1] / d;
paulo@89	8352 s = a * a + b * b;
paulo@89	8353 if (s > 9) {
paulo@89	8354 s = d * 3 / Math.sqrt(s);
paulo@89	8355 m[i] = s * a;
paulo@89	8356 m[i + 1] = s * b;
paulo@89	8357 }
paulo@89	8358 }
paulo@89	8359 }
paulo@89	8360 i = -1;
paulo@89	8361 while (++i <= j) {
paulo@89	8362 s = (points[Math.min(j, i + 1)][0] - points[Math.max(0, i - 1)][0]) / (6 * (1 + m[i] * m[i]));
paulo@89	8363 tangents.push([ s \|\| 0, m[i] * s \|\| 0 ]);
paulo@89	8364 }
paulo@89	8365 return tangents;
paulo@89	8366 }
paulo@89	8367 function d3_svg_lineMonotone(points) {
paulo@89	8368 return points.length < 3 ? d3_svg_lineLinear(points) : points[0] + d3_svg_lineHermite(points, d3_svg_lineMonotoneTangents(points));
paulo@89	8369 }
paulo@89	8370 d3.svg.line.radial = function() {
paulo@89	8371 var line = d3_svg_line(d3_svg_lineRadial);
paulo@89	8372 line.radius = line.x, delete line.x;
paulo@89	8373 line.angle = line.y, delete line.y;
paulo@89	8374 return line;
paulo@89	8375 };
paulo@89	8376 function d3_svg_lineRadial(points) {
paulo@89	8377 var point, i = -1, n = points.length, r, a;
paulo@89	8378 while (++i < n) {
paulo@89	8379 point = points[i];
paulo@89	8380 r = point[0];
paulo@89	8381 a = point[1] - halfπ;
paulo@89	8382 point[0] = r * Math.cos(a);
paulo@89	8383 point[1] = r * Math.sin(a);
paulo@89	8384 }
paulo@89	8385 return points;
paulo@89	8386 }
paulo@89	8387 function d3_svg_area(projection) {
paulo@89	8388 var x0 = d3_geom_pointX, x1 = d3_geom_pointX, y0 = 0, y1 = d3_geom_pointY, defined = d3_true, interpolate = d3_svg_lineLinear, interpolateKey = interpolate.key, interpolateReverse = interpolate, L = "L", tension = .7;
paulo@89	8389 function area(data) {
paulo@89	8390 var segments = [], points0 = [], points1 = [], i = -1, n = data.length, d, fx0 = d3_functor(x0), fy0 = d3_functor(y0), fx1 = x0 === x1 ? function() {
paulo@89	8391 return x;
paulo@89	8392 } : d3_functor(x1), fy1 = y0 === y1 ? function() {
paulo@89	8393 return y;
paulo@89	8394 } : d3_functor(y1), x, y;
paulo@89	8395 function segment() {
paulo@89	8396 segments.push("M", interpolate(projection(points1), tension), L, interpolateReverse(projection(points0.reverse()), tension), "Z");
paulo@89	8397 }
paulo@89	8398 while (++i < n) {
paulo@89	8399 if (defined.call(this, d = data[i], i)) {
paulo@89	8400 points0.push([ x = +fx0.call(this, d, i), y = +fy0.call(this, d, i) ]);
paulo@89	8401 points1.push([ +fx1.call(this, d, i), +fy1.call(this, d, i) ]);
paulo@89	8402 } else if (points0.length) {
paulo@89	8403 segment();
paulo@89	8404 points0 = [];
paulo@89	8405 points1 = [];
paulo@89	8406 }
paulo@89	8407 }
paulo@89	8408 if (points0.length) segment();
paulo@89	8409 return segments.length ? segments.join("") : null;
paulo@89	8410 }
paulo@89	8411 area.x = function(_) {
paulo@89	8412 if (!arguments.length) return x1;
paulo@89	8413 x0 = x1 = _;
paulo@89	8414 return area;
paulo@89	8415 };
paulo@89	8416 area.x0 = function(_) {
paulo@89	8417 if (!arguments.length) return x0;
paulo@89	8418 x0 = _;
paulo@89	8419 return area;
paulo@89	8420 };
paulo@89	8421 area.x1 = function(_) {
paulo@89	8422 if (!arguments.length) return x1;
paulo@89	8423 x1 = _;
paulo@89	8424 return area;
paulo@89	8425 };
paulo@89	8426 area.y = function(_) {
paulo@89	8427 if (!arguments.length) return y1;
paulo@89	8428 y0 = y1 = _;
paulo@89	8429 return area;
paulo@89	8430 };
paulo@89	8431 area.y0 = function(_) {
paulo@89	8432 if (!arguments.length) return y0;
paulo@89	8433 y0 = _;
paulo@89	8434 return area;
paulo@89	8435 };
paulo@89	8436 area.y1 = function(_) {
paulo@89	8437 if (!arguments.length) return y1;
paulo@89	8438 y1 = _;
paulo@89	8439 return area;
paulo@89	8440 };
paulo@89	8441 area.defined = function(_) {
paulo@89	8442 if (!arguments.length) return defined;
paulo@89	8443 defined = _;
paulo@89	8444 return area;
paulo@89	8445 };
paulo@89	8446 area.interpolate = function(_) {
paulo@89	8447 if (!arguments.length) return interpolateKey;
paulo@89	8448 if (typeof _ === "function") interpolateKey = interpolate = _; else interpolateKey = (interpolate = d3_svg_lineInterpolators.get(_) \|\| d3_svg_lineLinear).key;
paulo@89	8449 interpolateReverse = interpolate.reverse \|\| interpolate;
paulo@89	8450 L = interpolate.closed ? "M" : "L";
paulo@89	8451 return area;
paulo@89	8452 };
paulo@89	8453 area.tension = function(_) {
paulo@89	8454 if (!arguments.length) return tension;
paulo@89	8455 tension = _;
paulo@89	8456 return area;
paulo@89	8457 };
paulo@89	8458 return area;
paulo@89	8459 }
paulo@89	8460 d3_svg_lineStepBefore.reverse = d3_svg_lineStepAfter;
paulo@89	8461 d3_svg_lineStepAfter.reverse = d3_svg_lineStepBefore;
paulo@89	8462 d3.svg.area = function() {
paulo@89	8463 return d3_svg_area(d3_identity);
paulo@89	8464 };
paulo@89	8465 d3.svg.area.radial = function() {
paulo@89	8466 var area = d3_svg_area(d3_svg_lineRadial);
paulo@89	8467 area.radius = area.x, delete area.x;
paulo@89	8468 area.innerRadius = area.x0, delete area.x0;
paulo@89	8469 area.outerRadius = area.x1, delete area.x1;
paulo@89	8470 area.angle = area.y, delete area.y;
paulo@89	8471 area.startAngle = area.y0, delete area.y0;
paulo@89	8472 area.endAngle = area.y1, delete area.y1;
paulo@89	8473 return area;
paulo@89	8474 };
paulo@89	8475 d3.svg.chord = function() {
paulo@89	8476 var source = d3_source, target = d3_target, radius = d3_svg_chordRadius, startAngle = d3_svg_arcStartAngle, endAngle = d3_svg_arcEndAngle;
paulo@89	8477 function chord(d, i) {
paulo@89	8478 var s = subgroup(this, source, d, i), t = subgroup(this, target, d, i);
paulo@89	8479 return "M" + s.p0 + arc(s.r, s.p1, s.a1 - s.a0) + (equals(s, t) ? curve(s.r, s.p1, s.r, s.p0) : curve(s.r, s.p1, t.r, t.p0) + arc(t.r, t.p1, t.a1 - t.a0) + curve(t.r, t.p1, s.r, s.p0)) + "Z";
paulo@89	8480 }
paulo@89	8481 function subgroup(self, f, d, i) {
paulo@89	8482 var subgroup = f.call(self, d, i), r = radius.call(self, subgroup, i), a0 = startAngle.call(self, subgroup, i) - halfπ, a1 = endAngle.call(self, subgroup, i) - halfπ;
paulo@89	8483 return {
paulo@89	8484 r: r,
paulo@89	8485 a0: a0,
paulo@89	8486 a1: a1,
paulo@89	8487 p0: [ r * Math.cos(a0), r * Math.sin(a0) ],
paulo@89	8488 p1: [ r * Math.cos(a1), r * Math.sin(a1) ]
paulo@89	8489 };
paulo@89	8490 }
paulo@89	8491 function equals(a, b) {
paulo@89	8492 return a.a0 == b.a0 && a.a1 == b.a1;
paulo@89	8493 }
paulo@89	8494 function arc(r, p, a) {
paulo@89	8495 return "A" + r + "," + r + " 0 " + +(a > π) + ",1 " + p;
paulo@89	8496 }
paulo@89	8497 function curve(r0, p0, r1, p1) {
paulo@89	8498 return "Q 0,0 " + p1;
paulo@89	8499 }
paulo@89	8500 chord.radius = function(v) {
paulo@89	8501 if (!arguments.length) return radius;
paulo@89	8502 radius = d3_functor(v);
paulo@89	8503 return chord;
paulo@89	8504 };
paulo@89	8505 chord.source = function(v) {
paulo@89	8506 if (!arguments.length) return source;
paulo@89	8507 source = d3_functor(v);
paulo@89	8508 return chord;
paulo@89	8509 };
paulo@89	8510 chord.target = function(v) {
paulo@89	8511 if (!arguments.length) return target;
paulo@89	8512 target = d3_functor(v);
paulo@89	8513 return chord;
paulo@89	8514 };
paulo@89	8515 chord.startAngle = function(v) {
paulo@89	8516 if (!arguments.length) return startAngle;
paulo@89	8517 startAngle = d3_functor(v);
paulo@89	8518 return chord;
paulo@89	8519 };
paulo@89	8520 chord.endAngle = function(v) {
paulo@89	8521 if (!arguments.length) return endAngle;
paulo@89	8522 endAngle = d3_functor(v);
paulo@89	8523 return chord;
paulo@89	8524 };
paulo@89	8525 return chord;
paulo@89	8526 };
paulo@89	8527 function d3_svg_chordRadius(d) {
paulo@89	8528 return d.radius;
paulo@89	8529 }
paulo@89	8530 d3.svg.diagonal = function() {
paulo@89	8531 var source = d3_source, target = d3_target, projection = d3_svg_diagonalProjection;
paulo@89	8532 function diagonal(d, i) {
paulo@89	8533 var p0 = source.call(this, d, i), p3 = target.call(this, d, i), m = (p0.y + p3.y) / 2, p = [ p0, {
paulo@89	8534 x: p0.x,
paulo@89	8535 y: m
paulo@89	8536 }, {
paulo@89	8537 x: p3.x,
paulo@89	8538 y: m
paulo@89	8539 }, p3 ];
paulo@89	8540 p = p.map(projection);
paulo@89	8541 return "M" + p[0] + "C" + p[1] + " " + p[2] + " " + p[3];
paulo@89	8542 }
paulo@89	8543 diagonal.source = function(x) {
paulo@89	8544 if (!arguments.length) return source;
paulo@89	8545 source = d3_functor(x);
paulo@89	8546 return diagonal;
paulo@89	8547 };
paulo@89	8548 diagonal.target = function(x) {
paulo@89	8549 if (!arguments.length) return target;
paulo@89	8550 target = d3_functor(x);
paulo@89	8551 return diagonal;
paulo@89	8552 };
paulo@89	8553 diagonal.projection = function(x) {
paulo@89	8554 if (!arguments.length) return projection;
paulo@89	8555 projection = x;
paulo@89	8556 return diagonal;
paulo@89	8557 };
paulo@89	8558 return diagonal;
paulo@89	8559 };
paulo@89	8560 function d3_svg_diagonalProjection(d) {
paulo@89	8561 return [ d.x, d.y ];
paulo@89	8562 }
paulo@89	8563 d3.svg.diagonal.radial = function() {
paulo@89	8564 var diagonal = d3.svg.diagonal(), projection = d3_svg_diagonalProjection, projection_ = diagonal.projection;
paulo@89	8565 diagonal.projection = function(x) {
paulo@89	8566 return arguments.length ? projection_(d3_svg_diagonalRadialProjection(projection = x)) : projection;
paulo@89	8567 };
paulo@89	8568 return diagonal;
paulo@89	8569 };
paulo@89	8570 function d3_svg_diagonalRadialProjection(projection) {
paulo@89	8571 return function() {
paulo@89	8572 var d = projection.apply(this, arguments), r = d[0], a = d[1] - halfπ;
paulo@89	8573 return [ r * Math.cos(a), r * Math.sin(a) ];
paulo@89	8574 };
paulo@89	8575 }
paulo@89	8576 d3.svg.symbol = function() {
paulo@89	8577 var type = d3_svg_symbolType, size = d3_svg_symbolSize;
paulo@89	8578 function symbol(d, i) {
paulo@89	8579 return (d3_svg_symbols.get(type.call(this, d, i)) \|\| d3_svg_symbolCircle)(size.call(this, d, i));
paulo@89	8580 }
paulo@89	8581 symbol.type = function(x) {
paulo@89	8582 if (!arguments.length) return type;
paulo@89	8583 type = d3_functor(x);
paulo@89	8584 return symbol;
paulo@89	8585 };
paulo@89	8586 symbol.size = function(x) {
paulo@89	8587 if (!arguments.length) return size;
paulo@89	8588 size = d3_functor(x);
paulo@89	8589 return symbol;
paulo@89	8590 };
paulo@89	8591 return symbol;
paulo@89	8592 };
paulo@89	8593 function d3_svg_symbolSize() {
paulo@89	8594 return 64;
paulo@89	8595 }
paulo@89	8596 function d3_svg_symbolType() {
paulo@89	8597 return "circle";
paulo@89	8598 }
paulo@89	8599 function d3_svg_symbolCircle(size) {
paulo@89	8600 var r = Math.sqrt(size / π);
paulo@89	8601 return "M0," + r + "A" + r + "," + r + " 0 1,1 0," + -r + "A" + r + "," + r + " 0 1,1 0," + r + "Z";
paulo@89	8602 }
paulo@89	8603 var d3_svg_symbols = d3.map({
paulo@89	8604 circle: d3_svg_symbolCircle,
paulo@89	8605 cross: function(size) {
paulo@89	8606 var r = Math.sqrt(size / 5) / 2;
paulo@89	8607 return "M" + -3 * r + "," + -r + "H" + -r + "V" + -3 * r + "H" + r + "V" + -r + "H" + 3 * r + "V" + r + "H" + r + "V" + 3 * r + "H" + -r + "V" + r + "H" + -3 * r + "Z";
paulo@89	8608 },
paulo@89	8609 diamond: function(size) {
paulo@89	8610 var ry = Math.sqrt(size / (2 * d3_svg_symbolTan30)), rx = ry * d3_svg_symbolTan30;
paulo@89	8611 return "M0," + -ry + "L" + rx + ",0" + " 0," + ry + " " + -rx + ",0" + "Z";
paulo@89	8612 },
paulo@89	8613 square: function(size) {
paulo@89	8614 var r = Math.sqrt(size) / 2;
paulo@89	8615 return "M" + -r + "," + -r + "L" + r + "," + -r + " " + r + "," + r + " " + -r + "," + r + "Z";
paulo@89	8616 },
paulo@89	8617 "triangle-down": function(size) {
paulo@89	8618 var rx = Math.sqrt(size / d3_svg_symbolSqrt3), ry = rx * d3_svg_symbolSqrt3 / 2;
paulo@89	8619 return "M0," + ry + "L" + rx + "," + -ry + " " + -rx + "," + -ry + "Z";
paulo@89	8620 },
paulo@89	8621 "triangle-up": function(size) {
paulo@89	8622 var rx = Math.sqrt(size / d3_svg_symbolSqrt3), ry = rx * d3_svg_symbolSqrt3 / 2;
paulo@89	8623 return "M0," + -ry + "L" + rx + "," + ry + " " + -rx + "," + ry + "Z";
paulo@89	8624 }
paulo@89	8625 });
paulo@89	8626 d3.svg.symbolTypes = d3_svg_symbols.keys();
paulo@89	8627 var d3_svg_symbolSqrt3 = Math.sqrt(3), d3_svg_symbolTan30 = Math.tan(30 * d3_radians);
paulo@89	8628 d3_selectionPrototype.transition = function(name) {
paulo@89	8629 var id = d3_transitionInheritId \|\| ++d3_transitionId, ns = d3_transitionNamespace(name), subgroups = [], subgroup, node, transition = d3_transitionInherit \|\| {
paulo@89	8630 time: Date.now(),
paulo@89	8631 ease: d3_ease_cubicInOut,
paulo@89	8632 delay: 0,
paulo@89	8633 duration: 250
paulo@89	8634 };
paulo@89	8635 for (var j = -1, m = this.length; ++j < m; ) {
paulo@89	8636 subgroups.push(subgroup = []);
paulo@89	8637 for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
paulo@89	8638 if (node = group[i]) d3_transitionNode(node, i, ns, id, transition);
paulo@89	8639 subgroup.push(node);
paulo@89	8640 }
paulo@89	8641 }
paulo@89	8642 return d3_transition(subgroups, ns, id);
paulo@89	8643 };
paulo@89	8644 d3_selectionPrototype.interrupt = function(name) {
paulo@89	8645 return this.each(name == null ? d3_selection_interrupt : d3_selection_interruptNS(d3_transitionNamespace(name)));
paulo@89	8646 };
paulo@89	8647 var d3_selection_interrupt = d3_selection_interruptNS(d3_transitionNamespace());
paulo@89	8648 function d3_selection_interruptNS(ns) {
paulo@89	8649 return function() {
paulo@89	8650 var lock, activeId, active;
paulo@89	8651 if ((lock = this[ns]) && (active = lock[activeId = lock.active])) {
paulo@89	8652 active.timer.c = null;
paulo@89	8653 active.timer.t = NaN;
paulo@89	8654 if (--lock.count) delete lock[activeId]; else delete this[ns];
paulo@89	8655 lock.active += .5;
paulo@89	8656 active.event && active.event.interrupt.call(this, this.__data__, active.index);
paulo@89	8657 }
paulo@89	8658 };
paulo@89	8659 }
paulo@89	8660 function d3_transition(groups, ns, id) {
paulo@89	8661 d3_subclass(groups, d3_transitionPrototype);
paulo@89	8662 groups.namespace = ns;
paulo@89	8663 groups.id = id;
paulo@89	8664 return groups;
paulo@89	8665 }
paulo@89	8666 var d3_transitionPrototype = [], d3_transitionId = 0, d3_transitionInheritId, d3_transitionInherit;
paulo@89	8667 d3_transitionPrototype.call = d3_selectionPrototype.call;
paulo@89	8668 d3_transitionPrototype.empty = d3_selectionPrototype.empty;
paulo@89	8669 d3_transitionPrototype.node = d3_selectionPrototype.node;
paulo@89	8670 d3_transitionPrototype.size = d3_selectionPrototype.size;
paulo@89	8671 d3.transition = function(selection, name) {
paulo@89	8672 return selection && selection.transition ? d3_transitionInheritId ? selection.transition(name) : selection : d3.selection().transition(selection);
paulo@89	8673 };
paulo@89	8674 d3.transition.prototype = d3_transitionPrototype;
paulo@89	8675 d3_transitionPrototype.select = function(selector) {
paulo@89	8676 var id = this.id, ns = this.namespace, subgroups = [], subgroup, subnode, node;
paulo@89	8677 selector = d3_selection_selector(selector);
paulo@89	8678 for (var j = -1, m = this.length; ++j < m; ) {
paulo@89	8679 subgroups.push(subgroup = []);
paulo@89	8680 for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
paulo@89	8681 if ((node = group[i]) && (subnode = selector.call(node, node.__data__, i, j))) {
paulo@89	8682 if ("__data__" in node) subnode.__data__ = node.__data__;
paulo@89	8683 d3_transitionNode(subnode, i, ns, id, node[ns][id]);
paulo@89	8684 subgroup.push(subnode);
paulo@89	8685 } else {
paulo@89	8686 subgroup.push(null);
paulo@89	8687 }
paulo@89	8688 }
paulo@89	8689 }
paulo@89	8690 return d3_transition(subgroups, ns, id);
paulo@89	8691 };
paulo@89	8692 d3_transitionPrototype.selectAll = function(selector) {
paulo@89	8693 var id = this.id, ns = this.namespace, subgroups = [], subgroup, subnodes, node, subnode, transition;
paulo@89	8694 selector = d3_selection_selectorAll(selector);
paulo@89	8695 for (var j = -1, m = this.length; ++j < m; ) {
paulo@89	8696 for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
paulo@89	8697 if (node = group[i]) {
paulo@89	8698 transition = node[ns][id];
paulo@89	8699 subnodes = selector.call(node, node.__data__, i, j);
paulo@89	8700 subgroups.push(subgroup = []);
paulo@89	8701 for (var k = -1, o = subnodes.length; ++k < o; ) {
paulo@89	8702 if (subnode = subnodes[k]) d3_transitionNode(subnode, k, ns, id, transition);
paulo@89	8703 subgroup.push(subnode);
paulo@89	8704 }
paulo@89	8705 }
paulo@89	8706 }
paulo@89	8707 }
paulo@89	8708 return d3_transition(subgroups, ns, id);
paulo@89	8709 };
paulo@89	8710 d3_transitionPrototype.filter = function(filter) {
paulo@89	8711 var subgroups = [], subgroup, group, node;
paulo@89	8712 if (typeof filter !== "function") filter = d3_selection_filter(filter);
paulo@89	8713 for (var j = 0, m = this.length; j < m; j++) {
paulo@89	8714 subgroups.push(subgroup = []);
paulo@89	8715 for (var group = this[j], i = 0, n = group.length; i < n; i++) {
paulo@89	8716 if ((node = group[i]) && filter.call(node, node.__data__, i, j)) {
paulo@89	8717 subgroup.push(node);
paulo@89	8718 }
paulo@89	8719 }
paulo@89	8720 }
paulo@89	8721 return d3_transition(subgroups, this.namespace, this.id);
paulo@89	8722 };
paulo@89	8723 d3_transitionPrototype.tween = function(name, tween) {
paulo@89	8724 var id = this.id, ns = this.namespace;
paulo@89	8725 if (arguments.length < 2) return this.node()[ns][id].tween.get(name);
paulo@89	8726 return d3_selection_each(this, tween == null ? function(node) {
paulo@89	8727 node[ns][id].tween.remove(name);
paulo@89	8728 } : function(node) {
paulo@89	8729 node[ns][id].tween.set(name, tween);
paulo@89	8730 });
paulo@89	8731 };
paulo@89	8732 function d3_transition_tween(groups, name, value, tween) {
paulo@89	8733 var id = groups.id, ns = groups.namespace;
paulo@89	8734 return d3_selection_each(groups, typeof value === "function" ? function(node, i, j) {
paulo@89	8735 node[ns][id].tween.set(name, tween(value.call(node, node.__data__, i, j)));
paulo@89	8736 } : (value = tween(value), function(node) {
paulo@89	8737 node[ns][id].tween.set(name, value);
paulo@89	8738 }));
paulo@89	8739 }
paulo@89	8740 d3_transitionPrototype.attr = function(nameNS, value) {
paulo@89	8741 if (arguments.length < 2) {
paulo@89	8742 for (value in nameNS) this.attr(value, nameNS[value]);
paulo@89	8743 return this;
paulo@89	8744 }
paulo@89	8745 var interpolate = nameNS == "transform" ? d3_interpolateTransform : d3_interpolate, name = d3.ns.qualify(nameNS);
paulo@89	8746 function attrNull() {
paulo@89	8747 this.removeAttribute(name);
paulo@89	8748 }
paulo@89	8749 function attrNullNS() {
paulo@89	8750 this.removeAttributeNS(name.space, name.local);
paulo@89	8751 }
paulo@89	8752 function attrTween(b) {
paulo@89	8753 return b == null ? attrNull : (b += "", function() {
paulo@89	8754 var a = this.getAttribute(name), i;
paulo@89	8755 return a !== b && (i = interpolate(a, b), function(t) {
paulo@89	8756 this.setAttribute(name, i(t));
paulo@89	8757 });
paulo@89	8758 });
paulo@89	8759 }
paulo@89	8760 function attrTweenNS(b) {
paulo@89	8761 return b == null ? attrNullNS : (b += "", function() {
paulo@89	8762 var a = this.getAttributeNS(name.space, name.local), i;
paulo@89	8763 return a !== b && (i = interpolate(a, b), function(t) {
paulo@89	8764 this.setAttributeNS(name.space, name.local, i(t));
paulo@89	8765 });
paulo@89	8766 });
paulo@89	8767 }
paulo@89	8768 return d3_transition_tween(this, "attr." + nameNS, value, name.local ? attrTweenNS : attrTween);
paulo@89	8769 };
paulo@89	8770 d3_transitionPrototype.attrTween = function(nameNS, tween) {
paulo@89	8771 var name = d3.ns.qualify(nameNS);
paulo@89	8772 function attrTween(d, i) {
paulo@89	8773 var f = tween.call(this, d, i, this.getAttribute(name));
paulo@89	8774 return f && function(t) {
paulo@89	8775 this.setAttribute(name, f(t));
paulo@89	8776 };
paulo@89	8777 }
paulo@89	8778 function attrTweenNS(d, i) {
paulo@89	8779 var f = tween.call(this, d, i, this.getAttributeNS(name.space, name.local));
paulo@89	8780 return f && function(t) {
paulo@89	8781 this.setAttributeNS(name.space, name.local, f(t));
paulo@89	8782 };
paulo@89	8783 }
paulo@89	8784 return this.tween("attr." + nameNS, name.local ? attrTweenNS : attrTween);
paulo@89	8785 };
paulo@89	8786 d3_transitionPrototype.style = function(name, value, priority) {
paulo@89	8787 var n = arguments.length;
paulo@89	8788 if (n < 3) {
paulo@89	8789 if (typeof name !== "string") {
paulo@89	8790 if (n < 2) value = "";
paulo@89	8791 for (priority in name) this.style(priority, name[priority], value);
paulo@89	8792 return this;
paulo@89	8793 }
paulo@89	8794 priority = "";
paulo@89	8795 }
paulo@89	8796 function styleNull() {
paulo@89	8797 this.style.removeProperty(name);
paulo@89	8798 }
paulo@89	8799 function styleString(b) {
paulo@89	8800 return b == null ? styleNull : (b += "", function() {
paulo@89	8801 var a = d3_window(this).getComputedStyle(this, null).getPropertyValue(name), i;
paulo@89	8802 return a !== b && (i = d3_interpolate(a, b), function(t) {
paulo@89	8803 this.style.setProperty(name, i(t), priority);
paulo@89	8804 });
paulo@89	8805 });
paulo@89	8806 }
paulo@89	8807 return d3_transition_tween(this, "style." + name, value, styleString);
paulo@89	8808 };
paulo@89	8809 d3_transitionPrototype.styleTween = function(name, tween, priority) {
paulo@89	8810 if (arguments.length < 3) priority = "";
paulo@89	8811 function styleTween(d, i) {
paulo@89	8812 var f = tween.call(this, d, i, d3_window(this).getComputedStyle(this, null).getPropertyValue(name));
paulo@89	8813 return f && function(t) {
paulo@89	8814 this.style.setProperty(name, f(t), priority);
paulo@89	8815 };
paulo@89	8816 }
paulo@89	8817 return this.tween("style." + name, styleTween);
paulo@89	8818 };
paulo@89	8819 d3_transitionPrototype.text = function(value) {
paulo@89	8820 return d3_transition_tween(this, "text", value, d3_transition_text);
paulo@89	8821 };
paulo@89	8822 function d3_transition_text(b) {
paulo@89	8823 if (b == null) b = "";
paulo@89	8824 return function() {
paulo@89	8825 this.textContent = b;
paulo@89	8826 };
paulo@89	8827 }
paulo@89	8828 d3_transitionPrototype.remove = function() {
paulo@89	8829 var ns = this.namespace;
paulo@89	8830 return this.each("end.transition", function() {
paulo@89	8831 var p;
paulo@89	8832 if (this[ns].count < 2 && (p = this.parentNode)) p.removeChild(this);
paulo@89	8833 });
paulo@89	8834 };
paulo@89	8835 d3_transitionPrototype.ease = function(value) {
paulo@89	8836 var id = this.id, ns = this.namespace;
paulo@89	8837 if (arguments.length < 1) return this.node()[ns][id].ease;
paulo@89	8838 if (typeof value !== "function") value = d3.ease.apply(d3, arguments);
paulo@89	8839 return d3_selection_each(this, function(node) {
paulo@89	8840 node[ns][id].ease = value;
paulo@89	8841 });
paulo@89	8842 };
paulo@89	8843 d3_transitionPrototype.delay = function(value) {
paulo@89	8844 var id = this.id, ns = this.namespace;
paulo@89	8845 if (arguments.length < 1) return this.node()[ns][id].delay;
paulo@89	8846 return d3_selection_each(this, typeof value === "function" ? function(node, i, j) {
paulo@89	8847 node[ns][id].delay = +value.call(node, node.__data__, i, j);
paulo@89	8848 } : (value = +value, function(node) {
paulo@89	8849 node[ns][id].delay = value;
paulo@89	8850 }));
paulo@89	8851 };
paulo@89	8852 d3_transitionPrototype.duration = function(value) {
paulo@89	8853 var id = this.id, ns = this.namespace;
paulo@89	8854 if (arguments.length < 1) return this.node()[ns][id].duration;
paulo@89	8855 return d3_selection_each(this, typeof value === "function" ? function(node, i, j) {
paulo@89	8856 node[ns][id].duration = Math.max(1, value.call(node, node.__data__, i, j));
paulo@89	8857 } : (value = Math.max(1, value), function(node) {
paulo@89	8858 node[ns][id].duration = value;
paulo@89	8859 }));
paulo@89	8860 };
paulo@89	8861 d3_transitionPrototype.each = function(type, listener) {
paulo@89	8862 var id = this.id, ns = this.namespace;
paulo@89	8863 if (arguments.length < 2) {
paulo@89	8864 var inherit = d3_transitionInherit, inheritId = d3_transitionInheritId;
paulo@89	8865 try {
paulo@89	8866 d3_transitionInheritId = id;
paulo@89	8867 d3_selection_each(this, function(node, i, j) {
paulo@89	8868 d3_transitionInherit = node[ns][id];
paulo@89	8869 type.call(node, node.__data__, i, j);
paulo@89	8870 });
paulo@89	8871 } finally {
paulo@89	8872 d3_transitionInherit = inherit;
paulo@89	8873 d3_transitionInheritId = inheritId;
paulo@89	8874 }
paulo@89	8875 } else {
paulo@89	8876 d3_selection_each(this, function(node) {
paulo@89	8877 var transition = node[ns][id];
paulo@89	8878 (transition.event \|\| (transition.event = d3.dispatch("start", "end", "interrupt"))).on(type, listener);
paulo@89	8879 });
paulo@89	8880 }
paulo@89	8881 return this;
paulo@89	8882 };
paulo@89	8883 d3_transitionPrototype.transition = function() {
paulo@89	8884 var id0 = this.id, id1 = ++d3_transitionId, ns = this.namespace, subgroups = [], subgroup, group, node, transition;
paulo@89	8885 for (var j = 0, m = this.length; j < m; j++) {
paulo@89	8886 subgroups.push(subgroup = []);
paulo@89	8887 for (var group = this[j], i = 0, n = group.length; i < n; i++) {
paulo@89	8888 if (node = group[i]) {
paulo@89	8889 transition = node[ns][id0];
paulo@89	8890 d3_transitionNode(node, i, ns, id1, {
paulo@89	8891 time: transition.time,
paulo@89	8892 ease: transition.ease,
paulo@89	8893 delay: transition.delay + transition.duration,
paulo@89	8894 duration: transition.duration
paulo@89	8895 });
paulo@89	8896 }
paulo@89	8897 subgroup.push(node);
paulo@89	8898 }
paulo@89	8899 }
paulo@89	8900 return d3_transition(subgroups, ns, id1);
paulo@89	8901 };
paulo@89	8902 function d3_transitionNamespace(name) {
paulo@89	8903 return name == null ? "__transition__" : "__transition_" + name + "__";
paulo@89	8904 }
paulo@89	8905 function d3_transitionNode(node, i, ns, id, inherit) {
paulo@89	8906 var lock = node[ns] \|\| (node[ns] = {
paulo@89	8907 active: 0,
paulo@89	8908 count: 0
paulo@89	8909 }), transition = lock[id], time, timer, duration, ease, tweens;
paulo@89	8910 function schedule(elapsed) {
paulo@89	8911 var delay = transition.delay;
paulo@89	8912 timer.t = delay + time;
paulo@89	8913 if (delay <= elapsed) return start(elapsed - delay);
paulo@89	8914 timer.c = start;
paulo@89	8915 }
paulo@89	8916 function start(elapsed) {
paulo@89	8917 var activeId = lock.active, active = lock[activeId];
paulo@89	8918 if (active) {
paulo@89	8919 active.timer.c = null;
paulo@89	8920 active.timer.t = NaN;
paulo@89	8921 --lock.count;
paulo@89	8922 delete lock[activeId];
paulo@89	8923 active.event && active.event.interrupt.call(node, node.__data__, active.index);
paulo@89	8924 }
paulo@89	8925 for (var cancelId in lock) {
paulo@89	8926 if (+cancelId < id) {
paulo@89	8927 var cancel = lock[cancelId];
paulo@89	8928 cancel.timer.c = null;
paulo@89	8929 cancel.timer.t = NaN;
paulo@89	8930 --lock.count;
paulo@89	8931 delete lock[cancelId];
paulo@89	8932 }
paulo@89	8933 }
paulo@89	8934 timer.c = tick;
paulo@89	8935 d3_timer(function() {
paulo@89	8936 if (timer.c && tick(elapsed \|\| 1)) {
paulo@89	8937 timer.c = null;
paulo@89	8938 timer.t = NaN;
paulo@89	8939 }
paulo@89	8940 return 1;
paulo@89	8941 }, 0, time);
paulo@89	8942 lock.active = id;
paulo@89	8943 transition.event && transition.event.start.call(node, node.__data__, i);
paulo@89	8944 tweens = [];
paulo@89	8945 transition.tween.forEach(function(key, value) {
paulo@89	8946 if (value = value.call(node, node.__data__, i)) {
paulo@89	8947 tweens.push(value);
paulo@89	8948 }
paulo@89	8949 });
paulo@89	8950 ease = transition.ease;
paulo@89	8951 duration = transition.duration;
paulo@89	8952 }
paulo@89	8953 function tick(elapsed) {
paulo@89	8954 var t = elapsed / duration, e = ease(t), n = tweens.length;
paulo@89	8955 while (n > 0) {
paulo@89	8956 tweens[--n].call(node, e);
paulo@89	8957 }
paulo@89	8958 if (t >= 1) {
paulo@89	8959 transition.event && transition.event.end.call(node, node.__data__, i);
paulo@89	8960 if (--lock.count) delete lock[id]; else delete node[ns];
paulo@89	8961 return 1;
paulo@89	8962 }
paulo@89	8963 }
paulo@89	8964 if (!transition) {
paulo@89	8965 time = inherit.time;
paulo@89	8966 timer = d3_timer(schedule, 0, time);
paulo@89	8967 transition = lock[id] = {
paulo@89	8968 tween: new d3_Map(),
paulo@89	8969 time: time,
paulo@89	8970 timer: timer,
paulo@89	8971 delay: inherit.delay,
paulo@89	8972 duration: inherit.duration,
paulo@89	8973 ease: inherit.ease,
paulo@89	8974 index: i
paulo@89	8975 };
paulo@89	8976 inherit = null;
paulo@89	8977 ++lock.count;
paulo@89	8978 }
paulo@89	8979 }
paulo@89	8980 d3.svg.axis = function() {
paulo@89	8981 var scale = d3.scale.linear(), orient = d3_svg_axisDefaultOrient, innerTickSize = 6, outerTickSize = 6, tickPadding = 3, tickArguments_ = [ 10 ], tickValues = null, tickFormat_;
paulo@89	8982 function axis(g) {
paulo@89	8983 g.each(function() {
paulo@89	8984 var g = d3.select(this);
paulo@89	8985 var scale0 = this.__chart__ \|\| scale, scale1 = this.__chart__ = scale.copy();
paulo@89	8986 var ticks = tickValues == null ? scale1.ticks ? scale1.ticks.apply(scale1, tickArguments_) : scale1.domain() : tickValues, tickFormat = tickFormat_ == null ? scale1.tickFormat ? scale1.tickFormat.apply(scale1, tickArguments_) : d3_identity : tickFormat_, tick = g.selectAll(".tick").data(ticks, scale1), tickEnter = tick.enter().insert("g", ".domain").attr("class", "tick").style("opacity", ε), tickExit = d3.transition(tick.exit()).style("opacity", ε).remove(), tickUpdate = d3.transition(tick.order()).style("opacity", 1), tickSpacing = Math.max(innerTickSize, 0) + tickPadding, tickTransform;
paulo@89	8987 var range = d3_scaleRange(scale1), path = g.selectAll(".domain").data([ 0 ]), pathUpdate = (path.enter().append("path").attr("class", "domain"),
paulo@89	8988 d3.transition(path));
paulo@89	8989 tickEnter.append("line");
paulo@89	8990 tickEnter.append("text");
paulo@89	8991 var lineEnter = tickEnter.select("line"), lineUpdate = tickUpdate.select("line"), text = tick.select("text").text(tickFormat), textEnter = tickEnter.select("text"), textUpdate = tickUpdate.select("text"), sign = orient === "top" \|\| orient === "left" ? -1 : 1, x1, x2, y1, y2;
paulo@89	8992 if (orient === "bottom" \|\| orient === "top") {
paulo@89	8993 tickTransform = d3_svg_axisX, x1 = "x", y1 = "y", x2 = "x2", y2 = "y2";
paulo@89	8994 text.attr("dy", sign < 0 ? "0em" : ".71em").style("text-anchor", "middle");
paulo@89	8995 pathUpdate.attr("d", "M" + range[0] + "," + sign * outerTickSize + "V0H" + range[1] + "V" + sign * outerTickSize);
paulo@89	8996 } else {
paulo@89	8997 tickTransform = d3_svg_axisY, x1 = "y", y1 = "x", x2 = "y2", y2 = "x2";
paulo@89	8998 text.attr("dy", ".32em").style("text-anchor", sign < 0 ? "end" : "start");
paulo@89	8999 pathUpdate.attr("d", "M" + sign * outerTickSize + "," + range[0] + "H0V" + range[1] + "H" + sign * outerTickSize);
paulo@89	9000 }
paulo@89	9001 lineEnter.attr(y2, sign * innerTickSize);
paulo@89	9002 textEnter.attr(y1, sign * tickSpacing);
paulo@89	9003 lineUpdate.attr(x2, 0).attr(y2, sign * innerTickSize);
paulo@89	9004 textUpdate.attr(x1, 0).attr(y1, sign * tickSpacing);
paulo@89	9005 if (scale1.rangeBand) {
paulo@89	9006 var x = scale1, dx = x.rangeBand() / 2;
paulo@89	9007 scale0 = scale1 = function(d) {
paulo@89	9008 return x(d) + dx;
paulo@89	9009 };
paulo@89	9010 } else if (scale0.rangeBand) {
paulo@89	9011 scale0 = scale1;
paulo@89	9012 } else {
paulo@89	9013 tickExit.call(tickTransform, scale1, scale0);
paulo@89	9014 }
paulo@89	9015 tickEnter.call(tickTransform, scale0, scale1);
paulo@89	9016 tickUpdate.call(tickTransform, scale1, scale1);
paulo@89	9017 });
paulo@89	9018 }
paulo@89	9019 axis.scale = function(x) {
paulo@89	9020 if (!arguments.length) return scale;
paulo@89	9021 scale = x;
paulo@89	9022 return axis;
paulo@89	9023 };
paulo@89	9024 axis.orient = function(x) {
paulo@89	9025 if (!arguments.length) return orient;
paulo@89	9026 orient = x in d3_svg_axisOrients ? x + "" : d3_svg_axisDefaultOrient;
paulo@89	9027 return axis;
paulo@89	9028 };
paulo@89	9029 axis.ticks = function() {
paulo@89	9030 if (!arguments.length) return tickArguments_;
paulo@89	9031 tickArguments_ = d3_array(arguments);
paulo@89	9032 return axis;
paulo@89	9033 };
paulo@89	9034 axis.tickValues = function(x) {
paulo@89	9035 if (!arguments.length) return tickValues;
paulo@89	9036 tickValues = x;
paulo@89	9037 return axis;
paulo@89	9038 };
paulo@89	9039 axis.tickFormat = function(x) {
paulo@89	9040 if (!arguments.length) return tickFormat_;
paulo@89	9041 tickFormat_ = x;
paulo@89	9042 return axis;
paulo@89	9043 };
paulo@89	9044 axis.tickSize = function(x) {
paulo@89	9045 var n = arguments.length;
paulo@89	9046 if (!n) return innerTickSize;
paulo@89	9047 innerTickSize = +x;
paulo@89	9048 outerTickSize = +arguments[n - 1];
paulo@89	9049 return axis;
paulo@89	9050 };
paulo@89	9051 axis.innerTickSize = function(x) {
paulo@89	9052 if (!arguments.length) return innerTickSize;
paulo@89	9053 innerTickSize = +x;
paulo@89	9054 return axis;
paulo@89	9055 };
paulo@89	9056 axis.outerTickSize = function(x) {
paulo@89	9057 if (!arguments.length) return outerTickSize;
paulo@89	9058 outerTickSize = +x;
paulo@89	9059 return axis;
paulo@89	9060 };
paulo@89	9061 axis.tickPadding = function(x) {
paulo@89	9062 if (!arguments.length) return tickPadding;
paulo@89	9063 tickPadding = +x;
paulo@89	9064 return axis;
paulo@89	9065 };
paulo@89	9066 axis.tickSubdivide = function() {
paulo@89	9067 return arguments.length && axis;
paulo@89	9068 };
paulo@89	9069 return axis;
paulo@89	9070 };
paulo@89	9071 var d3_svg_axisDefaultOrient = "bottom", d3_svg_axisOrients = {
paulo@89	9072 top: 1,
paulo@89	9073 right: 1,
paulo@89	9074 bottom: 1,
paulo@89	9075 left: 1
paulo@89	9076 };
paulo@89	9077 function d3_svg_axisX(selection, x0, x1) {
paulo@89	9078 selection.attr("transform", function(d) {
paulo@89	9079 var v0 = x0(d);
paulo@89	9080 return "translate(" + (isFinite(v0) ? v0 : x1(d)) + ",0)";
paulo@89	9081 });
paulo@89	9082 }
paulo@89	9083 function d3_svg_axisY(selection, y0, y1) {
paulo@89	9084 selection.attr("transform", function(d) {
paulo@89	9085 var v0 = y0(d);
paulo@89	9086 return "translate(0," + (isFinite(v0) ? v0 : y1(d)) + ")";
paulo@89	9087 });
paulo@89	9088 }
paulo@89	9089 d3.svg.brush = function() {
paulo@89	9090 var event = d3_eventDispatch(brush, "brushstart", "brush", "brushend"), x = null, y = null, xExtent = [ 0, 0 ], yExtent = [ 0, 0 ], xExtentDomain, yExtentDomain, xClamp = true, yClamp = true, resizes = d3_svg_brushResizes[0];
paulo@89	9091 function brush(g) {
paulo@89	9092 g.each(function() {
paulo@89	9093 var g = d3.select(this).style("pointer-events", "all").style("-webkit-tap-highlight-color", "rgba(0,0,0,0)").on("mousedown.brush", brushstart).on("touchstart.brush", brushstart);
paulo@89	9094 var background = g.selectAll(".background").data([ 0 ]);
paulo@89	9095 background.enter().append("rect").attr("class", "background").style("visibility", "hidden").style("cursor", "crosshair");
paulo@89	9096 g.selectAll(".extent").data([ 0 ]).enter().append("rect").attr("class", "extent").style("cursor", "move");
paulo@89	9097 var resize = g.selectAll(".resize").data(resizes, d3_identity);
paulo@89	9098 resize.exit().remove();
paulo@89	9099 resize.enter().append("g").attr("class", function(d) {
paulo@89	9100 return "resize " + d;
paulo@89	9101 }).style("cursor", function(d) {
paulo@89	9102 return d3_svg_brushCursor[d];
paulo@89	9103 }).append("rect").attr("x", function(d) {
paulo@89	9104 return /[ew]$/.test(d) ? -3 : null;
paulo@89	9105 }).attr("y", function(d) {
paulo@89	9106 return /^[ns]/.test(d) ? -3 : null;
paulo@89	9107 }).attr("width", 6).attr("height", 6).style("visibility", "hidden");
paulo@89	9108 resize.style("display", brush.empty() ? "none" : null);
paulo@89	9109 var gUpdate = d3.transition(g), backgroundUpdate = d3.transition(background), range;
paulo@89	9110 if (x) {
paulo@89	9111 range = d3_scaleRange(x);
paulo@89	9112 backgroundUpdate.attr("x", range[0]).attr("width", range[1] - range[0]);
paulo@89	9113 redrawX(gUpdate);
paulo@89	9114 }
paulo@89	9115 if (y) {
paulo@89	9116 range = d3_scaleRange(y);
paulo@89	9117 backgroundUpdate.attr("y", range[0]).attr("height", range[1] - range[0]);
paulo@89	9118 redrawY(gUpdate);
paulo@89	9119 }
paulo@89	9120 redraw(gUpdate);
paulo@89	9121 });
paulo@89	9122 }
paulo@89	9123 brush.event = function(g) {
paulo@89	9124 g.each(function() {
paulo@89	9125 var event_ = event.of(this, arguments), extent1 = {
paulo@89	9126 x: xExtent,
paulo@89	9127 y: yExtent,
paulo@89	9128 i: xExtentDomain,
paulo@89	9129 j: yExtentDomain
paulo@89	9130 }, extent0 = this.__chart__ \|\| extent1;
paulo@89	9131 this.__chart__ = extent1;
paulo@89	9132 if (d3_transitionInheritId) {
paulo@89	9133 d3.select(this).transition().each("start.brush", function() {
paulo@89	9134 xExtentDomain = extent0.i;
paulo@89	9135 yExtentDomain = extent0.j;
paulo@89	9136 xExtent = extent0.x;
paulo@89	9137 yExtent = extent0.y;
paulo@89	9138 event_({
paulo@89	9139 type: "brushstart"
paulo@89	9140 });
paulo@89	9141 }).tween("brush:brush", function() {
paulo@89	9142 var xi = d3_interpolateArray(xExtent, extent1.x), yi = d3_interpolateArray(yExtent, extent1.y);
paulo@89	9143 xExtentDomain = yExtentDomain = null;
paulo@89	9144 return function(t) {
paulo@89	9145 xExtent = extent1.x = xi(t);
paulo@89	9146 yExtent = extent1.y = yi(t);
paulo@89	9147 event_({
paulo@89	9148 type: "brush",
paulo@89	9149 mode: "resize"
paulo@89	9150 });
paulo@89	9151 };
paulo@89	9152 }).each("end.brush", function() {
paulo@89	9153 xExtentDomain = extent1.i;
paulo@89	9154 yExtentDomain = extent1.j;
paulo@89	9155 event_({
paulo@89	9156 type: "brush",
paulo@89	9157 mode: "resize"
paulo@89	9158 });
paulo@89	9159 event_({
paulo@89	9160 type: "brushend"
paulo@89	9161 });
paulo@89	9162 });
paulo@89	9163 } else {
paulo@89	9164 event_({
paulo@89	9165 type: "brushstart"
paulo@89	9166 });
paulo@89	9167 event_({
paulo@89	9168 type: "brush",
paulo@89	9169 mode: "resize"
paulo@89	9170 });
paulo@89	9171 event_({
paulo@89	9172 type: "brushend"
paulo@89	9173 });
paulo@89	9174 }
paulo@89	9175 });
paulo@89	9176 };
paulo@89	9177 function redraw(g) {
paulo@89	9178 g.selectAll(".resize").attr("transform", function(d) {
paulo@89	9179 return "translate(" + xExtent[+/e$/.test(d)] + "," + yExtent[+/^s/.test(d)] + ")";
paulo@89	9180 });
paulo@89	9181 }
paulo@89	9182 function redrawX(g) {
paulo@89	9183 g.select(".extent").attr("x", xExtent[0]);
paulo@89	9184 g.selectAll(".extent,.n>rect,.s>rect").attr("width", xExtent[1] - xExtent[0]);
paulo@89	9185 }
paulo@89	9186 function redrawY(g) {
paulo@89	9187 g.select(".extent").attr("y", yExtent[0]);
paulo@89	9188 g.selectAll(".extent,.e>rect,.w>rect").attr("height", yExtent[1] - yExtent[0]);
paulo@89	9189 }
paulo@89	9190 function brushstart() {
paulo@89	9191 var target = this, eventTarget = d3.select(d3.event.target), event_ = event.of(target, arguments), g = d3.select(target), resizing = eventTarget.datum(), resizingX = !/^(n\|s)$/.test(resizing) && x, resizingY = !/^(e\|w)$/.test(resizing) && y, dragging = eventTarget.classed("extent"), dragRestore = d3_event_dragSuppress(target), center, origin = d3.mouse(target), offset;
paulo@89	9192 var w = d3.select(d3_window(target)).on("keydown.brush", keydown).on("keyup.brush", keyup);
paulo@89	9193 if (d3.event.changedTouches) {
paulo@89	9194 w.on("touchmove.brush", brushmove).on("touchend.brush", brushend);
paulo@89	9195 } else {
paulo@89	9196 w.on("mousemove.brush", brushmove).on("mouseup.brush", brushend);
paulo@89	9197 }
paulo@89	9198 g.interrupt().selectAll("*").interrupt();
paulo@89	9199 if (dragging) {
paulo@89	9200 origin[0] = xExtent[0] - origin[0];
paulo@89	9201 origin[1] = yExtent[0] - origin[1];
paulo@89	9202 } else if (resizing) {
paulo@89	9203 var ex = +/w$/.test(resizing), ey = +/^n/.test(resizing);
paulo@89	9204 offset = [ xExtent[1 - ex] - origin[0], yExtent[1 - ey] - origin[1] ];
paulo@89	9205 origin[0] = xExtent[ex];
paulo@89	9206 origin[1] = yExtent[ey];
paulo@89	9207 } else if (d3.event.altKey) center = origin.slice();
paulo@89	9208 g.style("pointer-events", "none").selectAll(".resize").style("display", null);
paulo@89	9209 d3.select("body").style("cursor", eventTarget.style("cursor"));
paulo@89	9210 event_({
paulo@89	9211 type: "brushstart"
paulo@89	9212 });
paulo@89	9213 brushmove();
paulo@89	9214 function keydown() {
paulo@89	9215 if (d3.event.keyCode == 32) {
paulo@89	9216 if (!dragging) {
paulo@89	9217 center = null;
paulo@89	9218 origin[0] -= xExtent[1];
paulo@89	9219 origin[1] -= yExtent[1];
paulo@89	9220 dragging = 2;
paulo@89	9221 }
paulo@89	9222 d3_eventPreventDefault();
paulo@89	9223 }
paulo@89	9224 }
paulo@89	9225 function keyup() {
paulo@89	9226 if (d3.event.keyCode == 32 && dragging == 2) {
paulo@89	9227 origin[0] += xExtent[1];
paulo@89	9228 origin[1] += yExtent[1];
paulo@89	9229 dragging = 0;
paulo@89	9230 d3_eventPreventDefault();
paulo@89	9231 }
paulo@89	9232 }
paulo@89	9233 function brushmove() {
paulo@89	9234 var point = d3.mouse(target), moved = false;
paulo@89	9235 if (offset) {
paulo@89	9236 point[0] += offset[0];
paulo@89	9237 point[1] += offset[1];
paulo@89	9238 }
paulo@89	9239 if (!dragging) {
paulo@89	9240 if (d3.event.altKey) {
paulo@89	9241 if (!center) center = [ (xExtent[0] + xExtent[1]) / 2, (yExtent[0] + yExtent[1]) / 2 ];
paulo@89	9242 origin[0] = xExtent[+(point[0] < center[0])];
paulo@89	9243 origin[1] = yExtent[+(point[1] < center[1])];
paulo@89	9244 } else center = null;
paulo@89	9245 }
paulo@89	9246 if (resizingX && move1(point, x, 0)) {
paulo@89	9247 redrawX(g);
paulo@89	9248 moved = true;
paulo@89	9249 }
paulo@89	9250 if (resizingY && move1(point, y, 1)) {
paulo@89	9251 redrawY(g);
paulo@89	9252 moved = true;
paulo@89	9253 }
paulo@89	9254 if (moved) {
paulo@89	9255 redraw(g);
paulo@89	9256 event_({
paulo@89	9257 type: "brush",
paulo@89	9258 mode: dragging ? "move" : "resize"
paulo@89	9259 });
paulo@89	9260 }
paulo@89	9261 }
paulo@89	9262 function move1(point, scale, i) {
paulo@89	9263 var range = d3_scaleRange(scale), r0 = range[0], r1 = range[1], position = origin[i], extent = i ? yExtent : xExtent, size = extent[1] - extent[0], min, max;
paulo@89	9264 if (dragging) {
paulo@89	9265 r0 -= position;
paulo@89	9266 r1 -= size + position;
paulo@89	9267 }
paulo@89	9268 min = (i ? yClamp : xClamp) ? Math.max(r0, Math.min(r1, point[i])) : point[i];
paulo@89	9269 if (dragging) {
paulo@89	9270 max = (min += position) + size;
paulo@89	9271 } else {
paulo@89	9272 if (center) position = Math.max(r0, Math.min(r1, 2 * center[i] - min));
paulo@89	9273 if (position < min) {
paulo@89	9274 max = min;
paulo@89	9275 min = position;
paulo@89	9276 } else {
paulo@89	9277 max = position;
paulo@89	9278 }
paulo@89	9279 }
paulo@89	9280 if (extent[0] != min \|\| extent[1] != max) {
paulo@89	9281 if (i) yExtentDomain = null; else xExtentDomain = null;
paulo@89	9282 extent[0] = min;
paulo@89	9283 extent[1] = max;
paulo@89	9284 return true;
paulo@89	9285 }
paulo@89	9286 }
paulo@89	9287 function brushend() {
paulo@89	9288 brushmove();
paulo@89	9289 g.style("pointer-events", "all").selectAll(".resize").style("display", brush.empty() ? "none" : null);
paulo@89	9290 d3.select("body").style("cursor", null);
paulo@89	9291 w.on("mousemove.brush", null).on("mouseup.brush", null).on("touchmove.brush", null).on("touchend.brush", null).on("keydown.brush", null).on("keyup.brush", null);
paulo@89	9292 dragRestore();
paulo@89	9293 event_({
paulo@89	9294 type: "brushend"
paulo@89	9295 });
paulo@89	9296 }
paulo@89	9297 }
paulo@89	9298 brush.x = function(z) {
paulo@89	9299 if (!arguments.length) return x;
paulo@89	9300 x = z;
paulo@89	9301 resizes = d3_svg_brushResizes[!x << 1 \| !y];
paulo@89	9302 return brush;
paulo@89	9303 };
paulo@89	9304 brush.y = function(z) {
paulo@89	9305 if (!arguments.length) return y;
paulo@89	9306 y = z;
paulo@89	9307 resizes = d3_svg_brushResizes[!x << 1 \| !y];
paulo@89	9308 return brush;
paulo@89	9309 };
paulo@89	9310 brush.clamp = function(z) {
paulo@89	9311 if (!arguments.length) return x && y ? [ xClamp, yClamp ] : x ? xClamp : y ? yClamp : null;
paulo@89	9312 if (x && y) xClamp = !!z[0], yClamp = !!z[1]; else if (x) xClamp = !!z; else if (y) yClamp = !!z;
paulo@89	9313 return brush;
paulo@89	9314 };
paulo@89	9315 brush.extent = function(z) {
paulo@89	9316 var x0, x1, y0, y1, t;
paulo@89	9317 if (!arguments.length) {
paulo@89	9318 if (x) {
paulo@89	9319 if (xExtentDomain) {
paulo@89	9320 x0 = xExtentDomain[0], x1 = xExtentDomain[1];
paulo@89	9321 } else {
paulo@89	9322 x0 = xExtent[0], x1 = xExtent[1];
paulo@89	9323 if (x.invert) x0 = x.invert(x0), x1 = x.invert(x1);
paulo@89	9324 if (x1 < x0) t = x0, x0 = x1, x1 = t;
paulo@89	9325 }
paulo@89	9326 }
paulo@89	9327 if (y) {
paulo@89	9328 if (yExtentDomain) {
paulo@89	9329 y0 = yExtentDomain[0], y1 = yExtentDomain[1];
paulo@89	9330 } else {
paulo@89	9331 y0 = yExtent[0], y1 = yExtent[1];
paulo@89	9332 if (y.invert) y0 = y.invert(y0), y1 = y.invert(y1);
paulo@89	9333 if (y1 < y0) t = y0, y0 = y1, y1 = t;
paulo@89	9334 }
paulo@89	9335 }
paulo@89	9336 return x && y ? [ [ x0, y0 ], [ x1, y1 ] ] : x ? [ x0, x1 ] : y && [ y0, y1 ];
paulo@89	9337 }
paulo@89	9338 if (x) {
paulo@89	9339 x0 = z[0], x1 = z[1];
paulo@89	9340 if (y) x0 = x0[0], x1 = x1[0];
paulo@89	9341 xExtentDomain = [ x0, x1 ];
paulo@89	9342 if (x.invert) x0 = x(x0), x1 = x(x1);
paulo@89	9343 if (x1 < x0) t = x0, x0 = x1, x1 = t;
paulo@89	9344 if (x0 != xExtent[0] \|\| x1 != xExtent[1]) xExtent = [ x0, x1 ];
paulo@89	9345 }
paulo@89	9346 if (y) {
paulo@89	9347 y0 = z[0], y1 = z[1];
paulo@89	9348 if (x) y0 = y0[1], y1 = y1[1];
paulo@89	9349 yExtentDomain = [ y0, y1 ];
paulo@89	9350 if (y.invert) y0 = y(y0), y1 = y(y1);
paulo@89	9351 if (y1 < y0) t = y0, y0 = y1, y1 = t;
paulo@89	9352 if (y0 != yExtent[0] \|\| y1 != yExtent[1]) yExtent = [ y0, y1 ];
paulo@89	9353 }
paulo@89	9354 return brush;
paulo@89	9355 };
paulo@89	9356 brush.clear = function() {
paulo@89	9357 if (!brush.empty()) {
paulo@89	9358 xExtent = [ 0, 0 ], yExtent = [ 0, 0 ];
paulo@89	9359 xExtentDomain = yExtentDomain = null;
paulo@89	9360 }
paulo@89	9361 return brush;
paulo@89	9362 };
paulo@89	9363 brush.empty = function() {
paulo@89	9364 return !!x && xExtent[0] == xExtent[1] \|\| !!y && yExtent[0] == yExtent[1];
paulo@89	9365 };
paulo@89	9366 return d3.rebind(brush, event, "on");
paulo@89	9367 };
paulo@89	9368 var d3_svg_brushCursor = {
paulo@89	9369 n: "ns-resize",
paulo@89	9370 e: "ew-resize",
paulo@89	9371 s: "ns-resize",
paulo@89	9372 w: "ew-resize",
paulo@89	9373 nw: "nwse-resize",
paulo@89	9374 ne: "nesw-resize",
paulo@89	9375 se: "nwse-resize",
paulo@89	9376 sw: "nesw-resize"
paulo@89	9377 };
paulo@89	9378 var d3_svg_brushResizes = [ [ "n", "e", "s", "w", "nw", "ne", "se", "sw" ], [ "e", "w" ], [ "n", "s" ], [] ];
paulo@89	9379 var d3_time_format = d3_time.format = d3_locale_enUS.timeFormat;
paulo@89	9380 var d3_time_formatUtc = d3_time_format.utc;
paulo@89	9381 var d3_time_formatIso = d3_time_formatUtc("%Y-%m-%dT%H:%M:%S.%LZ");
paulo@89	9382 d3_time_format.iso = Date.prototype.toISOString && +new Date("2000-01-01T00:00:00.000Z") ? d3_time_formatIsoNative : d3_time_formatIso;
paulo@89	9383 function d3_time_formatIsoNative(date) {
paulo@89	9384 return date.toISOString();
paulo@89	9385 }
paulo@89	9386 d3_time_formatIsoNative.parse = function(string) {
paulo@89	9387 var date = new Date(string);
paulo@89	9388 return isNaN(date) ? null : date;
paulo@89	9389 };
paulo@89	9390 d3_time_formatIsoNative.toString = d3_time_formatIso.toString;
paulo@89	9391 d3_time.second = d3_time_interval(function(date) {
paulo@89	9392 return new d3_date(Math.floor(date / 1e3) * 1e3);
paulo@89	9393 }, function(date, offset) {
paulo@89	9394 date.setTime(date.getTime() + Math.floor(offset) * 1e3);
paulo@89	9395 }, function(date) {
paulo@89	9396 return date.getSeconds();
paulo@89	9397 });
paulo@89	9398 d3_time.seconds = d3_time.second.range;
paulo@89	9399 d3_time.seconds.utc = d3_time.second.utc.range;
paulo@89	9400 d3_time.minute = d3_time_interval(function(date) {
paulo@89	9401 return new d3_date(Math.floor(date / 6e4) * 6e4);
paulo@89	9402 }, function(date, offset) {
paulo@89	9403 date.setTime(date.getTime() + Math.floor(offset) * 6e4);
paulo@89	9404 }, function(date) {
paulo@89	9405 return date.getMinutes();
paulo@89	9406 });
paulo@89	9407 d3_time.minutes = d3_time.minute.range;
paulo@89	9408 d3_time.minutes.utc = d3_time.minute.utc.range;
paulo@89	9409 d3_time.hour = d3_time_interval(function(date) {
paulo@89	9410 var timezone = date.getTimezoneOffset() / 60;
paulo@89	9411 return new d3_date((Math.floor(date / 36e5 - timezone) + timezone) * 36e5);
paulo@89	9412 }, function(date, offset) {
paulo@89	9413 date.setTime(date.getTime() + Math.floor(offset) * 36e5);
paulo@89	9414 }, function(date) {
paulo@89	9415 return date.getHours();
paulo@89	9416 });
paulo@89	9417 d3_time.hours = d3_time.hour.range;
paulo@89	9418 d3_time.hours.utc = d3_time.hour.utc.range;
paulo@89	9419 d3_time.month = d3_time_interval(function(date) {
paulo@89	9420 date = d3_time.day(date);
paulo@89	9421 date.setDate(1);
paulo@89	9422 return date;
paulo@89	9423 }, function(date, offset) {
paulo@89	9424 date.setMonth(date.getMonth() + offset);
paulo@89	9425 }, function(date) {
paulo@89	9426 return date.getMonth();
paulo@89	9427 });
paulo@89	9428 d3_time.months = d3_time.month.range;
paulo@89	9429 d3_time.months.utc = d3_time.month.utc.range;
paulo@89	9430 function d3_time_scale(linear, methods, format) {
paulo@89	9431 function scale(x) {
paulo@89	9432 return linear(x);
paulo@89	9433 }
paulo@89	9434 scale.invert = function(x) {
paulo@89	9435 return d3_time_scaleDate(linear.invert(x));
paulo@89	9436 };
paulo@89	9437 scale.domain = function(x) {
paulo@89	9438 if (!arguments.length) return linear.domain().map(d3_time_scaleDate);
paulo@89	9439 linear.domain(x);
paulo@89	9440 return scale;
paulo@89	9441 };
paulo@89	9442 function tickMethod(extent, count) {
paulo@89	9443 var span = extent[1] - extent[0], target = span / count, i = d3.bisect(d3_time_scaleSteps, target);
paulo@89	9444 return i == d3_time_scaleSteps.length ? [ methods.year, d3_scale_linearTickRange(extent.map(function(d) {
paulo@89	9445 return d / 31536e6;
paulo@89	9446 }), count)[2] ] : !i ? [ d3_time_scaleMilliseconds, d3_scale_linearTickRange(extent, count)[2] ] : methods[target / d3_time_scaleSteps[i - 1] < d3_time_scaleSteps[i] / target ? i - 1 : i];
paulo@89	9447 }
paulo@89	9448 scale.nice = function(interval, skip) {
paulo@89	9449 var domain = scale.domain(), extent = d3_scaleExtent(domain), method = interval == null ? tickMethod(extent, 10) : typeof interval === "number" && tickMethod(extent, interval);
paulo@89	9450 if (method) interval = method[0], skip = method[1];
paulo@89	9451 function skipped(date) {
paulo@89	9452 return !isNaN(date) && !interval.range(date, d3_time_scaleDate(+date + 1), skip).length;
paulo@89	9453 }
paulo@89	9454 return scale.domain(d3_scale_nice(domain, skip > 1 ? {
paulo@89	9455 floor: function(date) {
paulo@89	9456 while (skipped(date = interval.floor(date))) date = d3_time_scaleDate(date - 1);
paulo@89	9457 return date;
paulo@89	9458 },
paulo@89	9459 ceil: function(date) {
paulo@89	9460 while (skipped(date = interval.ceil(date))) date = d3_time_scaleDate(+date + 1);
paulo@89	9461 return date;
paulo@89	9462 }
paulo@89	9463 } : interval));
paulo@89	9464 };
paulo@89	9465 scale.ticks = function(interval, skip) {
paulo@89	9466 var extent = d3_scaleExtent(scale.domain()), method = interval == null ? tickMethod(extent, 10) : typeof interval === "number" ? tickMethod(extent, interval) : !interval.range && [ {
paulo@89	9467 range: interval
paulo@89	9468 }, skip ];
paulo@89	9469 if (method) interval = method[0], skip = method[1];
paulo@89	9470 return interval.range(extent[0], d3_time_scaleDate(+extent[1] + 1), skip < 1 ? 1 : skip);
paulo@89	9471 };
paulo@89	9472 scale.tickFormat = function() {
paulo@89	9473 return format;
paulo@89	9474 };
paulo@89	9475 scale.copy = function() {
paulo@89	9476 return d3_time_scale(linear.copy(), methods, format);
paulo@89	9477 };
paulo@89	9478 return d3_scale_linearRebind(scale, linear);
paulo@89	9479 }
paulo@89	9480 function d3_time_scaleDate(t) {
paulo@89	9481 return new Date(t);
paulo@89	9482 }
paulo@89	9483 var d3_time_scaleSteps = [ 1e3, 5e3, 15e3, 3e4, 6e4, 3e5, 9e5, 18e5, 36e5, 108e5, 216e5, 432e5, 864e5, 1728e5, 6048e5, 2592e6, 7776e6, 31536e6 ];
paulo@89	9484 var d3_time_scaleLocalMethods = [ [ d3_time.second, 1 ], [ d3_time.second, 5 ], [ d3_time.second, 15 ], [ d3_time.second, 30 ], [ d3_time.minute, 1 ], [ d3_time.minute, 5 ], [ d3_time.minute, 15 ], [ d3_time.minute, 30 ], [ d3_time.hour, 1 ], [ d3_time.hour, 3 ], [ d3_time.hour, 6 ], [ d3_time.hour, 12 ], [ d3_time.day, 1 ], [ d3_time.day, 2 ], [ d3_time.week, 1 ], [ d3_time.month, 1 ], [ d3_time.month, 3 ], [ d3_time.year, 1 ] ];
paulo@89	9485 var d3_time_scaleLocalFormat = d3_time_format.multi([ [ ".%L", function(d) {
paulo@89	9486 return d.getMilliseconds();
paulo@89	9487 } ], [ ":%S", function(d) {
paulo@89	9488 return d.getSeconds();
paulo@89	9489 } ], [ "%I:%M", function(d) {
paulo@89	9490 return d.getMinutes();
paulo@89	9491 } ], [ "%I %p", function(d) {
paulo@89	9492 return d.getHours();
paulo@89	9493 } ], [ "%a %d", function(d) {
paulo@89	9494 return d.getDay() && d.getDate() != 1;
paulo@89	9495 } ], [ "%b %d", function(d) {
paulo@89	9496 return d.getDate() != 1;
paulo@89	9497 } ], [ "%B", function(d) {
paulo@89	9498 return d.getMonth();
paulo@89	9499 } ], [ "%Y", d3_true ] ]);
paulo@89	9500 var d3_time_scaleMilliseconds = {
paulo@89	9501 range: function(start, stop, step) {
paulo@89	9502 return d3.range(Math.ceil(start / step) * step, +stop, step).map(d3_time_scaleDate);
paulo@89	9503 },
paulo@89	9504 floor: d3_identity,
paulo@89	9505 ceil: d3_identity
paulo@89	9506 };
paulo@89	9507 d3_time_scaleLocalMethods.year = d3_time.year;
paulo@89	9508 d3_time.scale = function() {
paulo@89	9509 return d3_time_scale(d3.scale.linear(), d3_time_scaleLocalMethods, d3_time_scaleLocalFormat);
paulo@89	9510 };
paulo@89	9511 var d3_time_scaleUtcMethods = d3_time_scaleLocalMethods.map(function(m) {
paulo@89	9512 return [ m[0].utc, m[1] ];
paulo@89	9513 });
paulo@89	9514 var d3_time_scaleUtcFormat = d3_time_formatUtc.multi([ [ ".%L", function(d) {
paulo@89	9515 return d.getUTCMilliseconds();
paulo@89	9516 } ], [ ":%S", function(d) {
paulo@89	9517 return d.getUTCSeconds();
paulo@89	9518 } ], [ "%I:%M", function(d) {
paulo@89	9519 return d.getUTCMinutes();
paulo@89	9520 } ], [ "%I %p", function(d) {
paulo@89	9521 return d.getUTCHours();
paulo@89	9522 } ], [ "%a %d", function(d) {
paulo@89	9523 return d.getUTCDay() && d.getUTCDate() != 1;
paulo@89	9524 } ], [ "%b %d", function(d) {
paulo@89	9525 return d.getUTCDate() != 1;
paulo@89	9526 } ], [ "%B", function(d) {
paulo@89	9527 return d.getUTCMonth();
paulo@89	9528 } ], [ "%Y", d3_true ] ]);
paulo@89	9529 d3_time_scaleUtcMethods.year = d3_time.year.utc;
paulo@89	9530 d3_time.scale.utc = function() {
paulo@89	9531 return d3_time_scale(d3.scale.linear(), d3_time_scaleUtcMethods, d3_time_scaleUtcFormat);
paulo@89	9532 };
paulo@89	9533 d3.text = d3_xhrType(function(request) {
paulo@89	9534 return request.responseText;
paulo@89	9535 });
paulo@89	9536 d3.json = function(url, callback) {
paulo@89	9537 return d3_xhr(url, "application/json", d3_json, callback);
paulo@89	9538 };
paulo@89	9539 function d3_json(request) {
paulo@89	9540 return JSON.parse(request.responseText);
paulo@89	9541 }
paulo@89	9542 d3.html = function(url, callback) {
paulo@89	9543 return d3_xhr(url, "text/html", d3_html, callback);
paulo@89	9544 };
paulo@89	9545 function d3_html(request) {
paulo@89	9546 var range = d3_document.createRange();
paulo@89	9547 range.selectNode(d3_document.body);
paulo@89	9548 return range.createContextualFragment(request.responseText);
paulo@89	9549 }
paulo@89	9550 d3.xml = d3_xhrType(function(request) {
paulo@89	9551 return request.responseXML;
paulo@89	9552 });
paulo@89	9553 if (typeof define === "function" && define.amd) this.d3 = d3, define(d3); else if (typeof module === "object" && module.exports) module.exports = d3; else this.d3 = d3;
paulo@89	9554 }();