Commit ab0e73093c2b33b07bc44b2bfa1dff6f67ec2008

  • avatar
  • arvind
  • Sat Aug 30 14:37:35 IST 2014
Adding js files needed for linked-data's tag cloud view
swtr/static/js/lib/d3.js
(4762 / 0)
  
1(function(){if (!Date.now) Date.now = function() {
2 return +new Date;
3};
4try {
5 document.createElement("div").style.setProperty("opacity", 0, "");
6} catch (error) {
7 var d3_style_prototype = CSSStyleDeclaration.prototype,
8 d3_style_setProperty = d3_style_prototype.setProperty;
9 d3_style_prototype.setProperty = function(name, value, priority) {
10 d3_style_setProperty.call(this, name, value + "", priority);
11 };
12}
13d3 = {version: "2.7.4"}; // semver
14var d3_array = d3_arraySlice; // conversion for NodeLists
15
16function d3_arrayCopy(pseudoarray) {
17 var i = -1, n = pseudoarray.length, array = [];
18 while (++i < n) array.push(pseudoarray[i]);
19 return array;
20}
21
22function d3_arraySlice(pseudoarray) {
23 return Array.prototype.slice.call(pseudoarray);
24}
25
26try {
27 d3_array(document.documentElement.childNodes)[0].nodeType;
28} catch(e) {
29 d3_array = d3_arrayCopy;
30}
31
32var d3_arraySubclass = [].__proto__?
33
34// Until ECMAScript supports array subclassing, prototype injection works well.
35function(array, prototype) {
36 array.__proto__ = prototype;
37}:
38
39// And if your browser doesn't support __proto__, we'll use direct extension.
40function(array, prototype) {
41 for (var property in prototype) array[property] = prototype[property];
42};
43function d3_this() {
44 return this;
45}
46d3.functor = function(v) {
47 return typeof v === "function" ? v : function() { return v; };
48};
49// Copies a variable number of methods from source to target.
50d3.rebind = function(target, source) {
51 var i = 1, n = arguments.length, method;
52 while (++i < n) target[method = arguments[i]] = d3_rebind(target, source, source[method]);
53 return target;
54};
55
56// Method is assumed to be a standard D3 getter-setter:
57// If passed with no arguments, gets the value.
58// If passed with arguments, sets the value and returns the target.
59function d3_rebind(target, source, method) {
60 return function() {
61 var value = method.apply(source, arguments);
62 return arguments.length ? target : value;
63 };
64}
65d3.ascending = function(a, b) {
66 return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN;
67};
68d3.descending = function(a, b) {
69 return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN;
70};
71d3.mean = function(array, f) {
72 var n = array.length,
73 a,
74 m = 0,
75 i = -1,
76 j = 0;
77 if (arguments.length === 1) {
78 while (++i < n) if (d3_number(a = array[i])) m += (a - m) / ++j;
79 } else {
80 while (++i < n) if (d3_number(a = f.call(array, array[i], i))) m += (a - m) / ++j;
81 }
82 return j ? m : undefined;
83};
84d3.median = function(array, f) {
85 if (arguments.length > 1) array = array.map(f);
86 array = array.filter(d3_number);
87 return array.length ? d3.quantile(array.sort(d3.ascending), .5) : undefined;
88};
89d3.min = function(array, f) {
90 var i = -1,
91 n = array.length,
92 a,
93 b;
94 if (arguments.length === 1) {
95 while (++i < n && ((a = array[i]) == null || a != a)) a = undefined;
96 while (++i < n) if ((b = array[i]) != null && a > b) a = b;
97 } else {
98 while (++i < n && ((a = f.call(array, array[i], i)) == null || a != a)) a = undefined;
99 while (++i < n) if ((b = f.call(array, array[i], i)) != null && a > b) a = b;
100 }
101 return a;
102};
103d3.max = function(array, f) {
104 var i = -1,
105 n = array.length,
106 a,
107 b;
108 if (arguments.length === 1) {
109 while (++i < n && ((a = array[i]) == null || a != a)) a = undefined;
110 while (++i < n) if ((b = array[i]) != null && b > a) a = b;
111 } else {
112 while (++i < n && ((a = f.call(array, array[i], i)) == null || a != a)) a = undefined;
113 while (++i < n) if ((b = f.call(array, array[i], i)) != null && b > a) a = b;
114 }
115 return a;
116};
117d3.extent = function(array, f) {
118 var i = -1,
119 n = array.length,
120 a,
121 b,
122 c;
123 if (arguments.length === 1) {
124 while (++i < n && ((a = c = array[i]) == null || a != a)) a = c = undefined;
125 while (++i < n) if ((b = array[i]) != null) {
126 if (a > b) a = b;
127 if (c < b) c = b;
128 }
129 } else {
130 while (++i < n && ((a = c = f.call(array, array[i], i)) == null || a != a)) a = undefined;
131 while (++i < n) if ((b = f.call(array, array[i], i)) != null) {
132 if (a > b) a = b;
133 if (c < b) c = b;
134 }
135 }
136 return [a, c];
137};
138d3.random = {
139 normal: function(mean, deviation) {
140 if (arguments.length < 2) deviation = 1;
141 if (arguments.length < 1) mean = 0;
142 return function() {
143 var x, y, r;
144 do {
145 x = Math.random() * 2 - 1;
146 y = Math.random() * 2 - 1;
147 r = x * x + y * y;
148 } while (!r || r > 1);
149 return mean + deviation * x * Math.sqrt(-2 * Math.log(r) / r);
150 };
151 }
152};
153function d3_number(x) {
154 return x != null && !isNaN(x);
155}
156d3.sum = function(array, f) {
157 var s = 0,
158 n = array.length,
159 a,
160 i = -1;
161
162 if (arguments.length === 1) {
163 while (++i < n) if (!isNaN(a = +array[i])) s += a;
164 } else {
165 while (++i < n) if (!isNaN(a = +f.call(array, array[i], i))) s += a;
166 }
167
168 return s;
169};
170// R-7 per <http://en.wikipedia.org/wiki/Quantile>
171d3.quantile = function(values, p) {
172 var H = (values.length - 1) * p + 1,
173 h = Math.floor(H),
174 v = values[h - 1],
175 e = H - h;
176 return e ? v + e * (values[h] - v) : v;
177};
178d3.transpose = function(matrix) {
179 return d3.zip.apply(d3, matrix);
180};
181d3.zip = function() {
182 if (!(n = arguments.length)) return [];
183 for (var i = -1, m = d3.min(arguments, d3_zipLength), zips = new Array(m); ++i < m;) {
184 for (var j = -1, n, zip = zips[i] = new Array(n); ++j < n;) {
185 zip[j] = arguments[j][i];
186 }
187 }
188 return zips;
189};
190
191function d3_zipLength(d) {
192 return d.length;
193}
194// Locate the insertion point for x in a to maintain sorted order. The
195// arguments lo and hi may be used to specify a subset of the array which should
196// be considered; by default the entire array is used. If x is already present
197// in a, the insertion point will be before (to the left of) any existing
198// entries. The return value is suitable for use as the first argument to
199// `array.splice` assuming that a is already sorted.
200//
201// The returned insertion point i partitions the array a into two halves so that
202// all v < x for v in a[lo:i] for the left side and all v >= x for v in a[i:hi]
203// for the right side.
204d3.bisectLeft = function(a, x, lo, hi) {
205 if (arguments.length < 3) lo = 0;
206 if (arguments.length < 4) hi = a.length;
207 while (lo < hi) {
208 var mid = (lo + hi) >> 1;
209 if (a[mid] < x) lo = mid + 1;
210 else hi = mid;
211 }
212 return lo;
213};
214
215// Similar to bisectLeft, but returns an insertion point which comes after (to
216// the right of) any existing entries of x in a.
217//
218// The returned insertion point i partitions the array into two halves so that
219// all v <= x for v in a[lo:i] for the left side and all v > x for v in a[i:hi]
220// for the right side.
221d3.bisect =
222d3.bisectRight = function(a, x, lo, hi) {
223 if (arguments.length < 3) lo = 0;
224 if (arguments.length < 4) hi = a.length;
225 while (lo < hi) {
226 var mid = (lo + hi) >> 1;
227 if (x < a[mid]) hi = mid;
228 else lo = mid + 1;
229 }
230 return lo;
231};
232d3.first = function(array, f) {
233 var i = 0,
234 n = array.length,
235 a = array[0],
236 b;
237 if (arguments.length === 1) f = d3.ascending;
238 while (++i < n) {
239 if (f.call(array, a, b = array[i]) > 0) {
240 a = b;
241 }
242 }
243 return a;
244};
245d3.last = function(array, f) {
246 var i = 0,
247 n = array.length,
248 a = array[0],
249 b;
250 if (arguments.length === 1) f = d3.ascending;
251 while (++i < n) {
252 if (f.call(array, a, b = array[i]) <= 0) {
253 a = b;
254 }
255 }
256 return a;
257};
258d3.nest = function() {
259 var nest = {},
260 keys = [],
261 sortKeys = [],
262 sortValues,
263 rollup;
264
265 function map(array, depth) {
266 if (depth >= keys.length) return rollup
267 ? rollup.call(nest, array) : (sortValues
268 ? array.sort(sortValues)
269 : array);
270
271 var i = -1,
272 n = array.length,
273 key = keys[depth++],
274 keyValue,
275 object,
276 o = {};
277
278 while (++i < n) {
279 if ((keyValue = key(object = array[i])) in o) {
280 o[keyValue].push(object);
281 } else {
282 o[keyValue] = [object];
283 }
284 }
285
286 for (keyValue in o) {
287 o[keyValue] = map(o[keyValue], depth);
288 }
289
290 return o;
291 }
292
293 function entries(map, depth) {
294 if (depth >= keys.length) return map;
295
296 var a = [],
297 sortKey = sortKeys[depth++],
298 key;
299
300 for (key in map) {
301 a.push({key: key, values: entries(map[key], depth)});
302 }
303
304 if (sortKey) a.sort(function(a, b) {
305 return sortKey(a.key, b.key);
306 });
307
308 return a;
309 }
310
311 nest.map = function(array) {
312 return map(array, 0);
313 };
314
315 nest.entries = function(array) {
316 return entries(map(array, 0), 0);
317 };
318
319 nest.key = function(d) {
320 keys.push(d);
321 return nest;
322 };
323
324 // Specifies the order for the most-recently specified key.
325 // Note: only applies to entries. Map keys are unordered!
326 nest.sortKeys = function(order) {
327 sortKeys[keys.length - 1] = order;
328 return nest;
329 };
330
331 // Specifies the order for leaf values.
332 // Applies to both maps and entries array.
333 nest.sortValues = function(order) {
334 sortValues = order;
335 return nest;
336 };
337
338 nest.rollup = function(f) {
339 rollup = f;
340 return nest;
341 };
342
343 return nest;
344};
345d3.keys = function(map) {
346 var keys = [];
347 for (var key in map) keys.push(key);
348 return keys;
349};
350d3.values = function(map) {
351 var values = [];
352 for (var key in map) values.push(map[key]);
353 return values;
354};
355d3.entries = function(map) {
356 var entries = [];
357 for (var key in map) entries.push({key: key, value: map[key]});
358 return entries;
359};
360d3.permute = function(array, indexes) {
361 var permutes = [],
362 i = -1,
363 n = indexes.length;
364 while (++i < n) permutes[i] = array[indexes[i]];
365 return permutes;
366};
367d3.merge = function(arrays) {
368 return Array.prototype.concat.apply([], arrays);
369};
370d3.split = function(array, f) {
371 var arrays = [],
372 values = [],
373 value,
374 i = -1,
375 n = array.length;
376 if (arguments.length < 2) f = d3_splitter;
377 while (++i < n) {
378 if (f.call(values, value = array[i], i)) {
379 values = [];
380 } else {
381 if (!values.length) arrays.push(values);
382 values.push(value);
383 }
384 }
385 return arrays;
386};
387
388function d3_splitter(d) {
389 return d == null;
390}
391function d3_collapse(s) {
392 return s.replace(/(^\s+)|(\s+$)/g, "").replace(/\s+/g, " ");
393}
394/**
395 * @param {number} start
396 * @param {number=} stop
397 * @param {number=} step
398 */
399d3.range = function(start, stop, step) {
400 if (arguments.length < 3) {
401 step = 1;
402 if (arguments.length < 2) {
403 stop = start;
404 start = 0;
405 }
406 }
407 if ((stop - start) / step == Infinity) throw new Error("infinite range");
408 var range = [],
409 i = -1,
410 j;
411 if (step < 0) while ((j = start + step * ++i) > stop) range.push(j);
412 else while ((j = start + step * ++i) < stop) range.push(j);
413 return range;
414};
415d3.requote = function(s) {
416 return s.replace(d3_requote_re, "\\$&");
417};
418
419var d3_requote_re = /[\\\^\$\*\+\?\|\[\]\(\)\.\{\}]/g;
420d3.round = function(x, n) {
421 return n
422 ? Math.round(x * (n = Math.pow(10, n))) / n
423 : Math.round(x);
424};
425d3.xhr = function(url, mime, callback) {
426 var req = new XMLHttpRequest;
427 if (arguments.length < 3) callback = mime, mime = null;
428 else if (mime && req.overrideMimeType) req.overrideMimeType(mime);
429 req.open("GET", url, true);
430 if (mime) req.setRequestHeader("Accept", mime);
431 req.onreadystatechange = function() {
432 if (req.readyState === 4) callback(req.status < 300 ? req : null);
433 };
434 req.send(null);
435};
436d3.text = function(url, mime, callback) {
437 function ready(req) {
438 callback(req && req.responseText);
439 }
440 if (arguments.length < 3) {
441 callback = mime;
442 mime = null;
443 }
444 d3.xhr(url, mime, ready);
445};
446d3.json = function(url, callback) {
447 d3.text(url, "application/json", function(text) {
448 callback(text ? JSON.parse(text) : null);
449 });
450};
451d3.html = function(url, callback) {
452 d3.text(url, "text/html", function(text) {
453 if (text != null) { // Treat empty string as valid HTML.
454 var range = document.createRange();
455 range.selectNode(document.body);
456 text = range.createContextualFragment(text);
457 }
458 callback(text);
459 });
460};
461d3.xml = function(url, mime, callback) {
462 function ready(req) {
463 callback(req && req.responseXML);
464 }
465 if (arguments.length < 3) {
466 callback = mime;
467 mime = null;
468 }
469 d3.xhr(url, mime, ready);
470};
471var d3_nsPrefix = {
472 svg: "http://www.w3.org/2000/svg",
473 xhtml: "http://www.w3.org/1999/xhtml",
474 xlink: "http://www.w3.org/1999/xlink",
475 xml: "http://www.w3.org/XML/1998/namespace",
476 xmlns: "http://www.w3.org/2000/xmlns/"
477};
478
479d3.ns = {
480 prefix: d3_nsPrefix,
481 qualify: function(name) {
482 var i = name.indexOf(":");
483 return i < 0 ? (name in d3_nsPrefix
484 ? {space: d3_nsPrefix[name], local: name} : name)
485 : {space: d3_nsPrefix[name.substring(0, i)], local: name.substring(i + 1)};
486 }
487};
488d3.dispatch = function() {
489 var dispatch = new d3_dispatch(),
490 i = -1,
491 n = arguments.length;
492 while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
493 return dispatch;
494};
495
496function d3_dispatch() {}
497
498d3_dispatch.prototype.on = function(type, listener) {
499 var i = type.indexOf("."),
500 name = "";
501
502 // Extract optional namespace, e.g., "click.foo"
503 if (i > 0) {
504 name = type.substring(i + 1);
505 type = type.substring(0, i);
506 }
507
508 return arguments.length < 2
509 ? this[type].on(name)
510 : this[type].on(name, listener);
511};
512
513function d3_dispatch_event(dispatch) {
514 var listeners = [],
515 listenerByName = {};
516
517 function event() {
518 var z = listeners, // defensive reference
519 i = -1,
520 n = z.length,
521 l;
522 while (++i < n) if (l = z[i].on) l.apply(this, arguments);
523 return dispatch;
524 }
525
526 event.on = function(name, listener) {
527 var l, i;
528
529 // return the current listener, if any
530 if (arguments.length < 2) return (l = listenerByName[name]) && l.on;
531
532 // remove the old listener, if any (with copy-on-write)
533 if (l = listenerByName[name]) {
534 l.on = null;
535 listeners = listeners.slice(0, i = listeners.indexOf(l)).concat(listeners.slice(i + 1));
536 delete listenerByName[name];
537 }
538
539 // add the new listener, if any
540 if (listener) {
541 listeners.push(listenerByName[name] = {on: listener});
542 }
543
544 return dispatch;
545 };
546
547 return event;
548}
549// TODO align
550d3.format = function(specifier) {
551 var match = d3_format_re.exec(specifier),
552 fill = match[1] || " ",
553 sign = match[3] || "",
554 zfill = match[5],
555 width = +match[6],
556 comma = match[7],
557 precision = match[8],
558 type = match[9],
559 scale = 1,
560 suffix = "",
561 integer = false;
562
563 if (precision) precision = +precision.substring(1);
564
565 if (zfill) {
566 fill = "0"; // TODO align = "=";
567 if (comma) width -= Math.floor((width - 1) / 4);
568 }
569
570 switch (type) {
571 case "n": comma = true; type = "g"; break;
572 case "%": scale = 100; suffix = "%"; type = "f"; break;
573 case "p": scale = 100; suffix = "%"; type = "r"; break;
574 case "d": integer = true; precision = 0; break;
575 case "s": scale = -1; type = "r"; break;
576 }
577
578 // If no precision is specified for r, fallback to general notation.
579 if (type == "r" && !precision) type = "g";
580
581 type = d3_format_types[type] || d3_format_typeDefault;
582
583 return function(value) {
584
585 // Return the empty string for floats formatted as ints.
586 if (integer && (value % 1)) return "";
587
588 // Convert negative to positive, and record the sign prefix.
589 var negative = (value < 0) && (value = -value) ? "\u2212" : sign;
590
591 // Apply the scale, computing it from the value's exponent for si format.
592 if (scale < 0) {
593 var prefix = d3.formatPrefix(value, precision);
594 value *= prefix.scale;
595 suffix = prefix.symbol;
596 } else {
597 value *= scale;
598 }
599
600 // Convert to the desired precision.
601 value = type(value, precision);
602
603 // If the fill character is 0, the sign and group is applied after the fill.
604 if (zfill) {
605 var length = value.length + negative.length;
606 if (length < width) value = new Array(width - length + 1).join(fill) + value;
607 if (comma) value = d3_format_group(value);
608 value = negative + value;
609 }
610
611 // Otherwise (e.g., space-filling), the sign and group is applied before.
612 else {
613 if (comma) value = d3_format_group(value);
614 value = negative + value;
615 var length = value.length;
616 if (length < width) value = new Array(width - length + 1).join(fill) + value;
617 }
618
619 return value + suffix;
620 };
621};
622
623// [[fill]align][sign][#][0][width][,][.precision][type]
624var d3_format_re = /(?:([^{])?([<>=^]))?([+\- ])?(#)?(0)?([0-9]+)?(,)?(\.[0-9]+)?([a-zA-Z%])?/;
625
626var d3_format_types = {
627 g: function(x, p) { return x.toPrecision(p); },
628 e: function(x, p) { return x.toExponential(p); },
629 f: function(x, p) { return x.toFixed(p); },
630 r: function(x, p) { return d3.round(x, p = d3_format_precision(x, p)).toFixed(Math.max(0, Math.min(20, p))); }
631};
632
633function d3_format_precision(x, p) {
634 return p - (x ? 1 + Math.floor(Math.log(x + Math.pow(10, 1 + Math.floor(Math.log(x) / Math.LN10) - p)) / Math.LN10) : 1);
635}
636
637function d3_format_typeDefault(x) {
638 return x + "";
639}
640
641// Apply comma grouping for thousands.
642function d3_format_group(value) {
643 var i = value.lastIndexOf("."),
644 f = i >= 0 ? value.substring(i) : (i = value.length, ""),
645 t = [];
646 while (i > 0) t.push(value.substring(i -= 3, i + 3));
647 return t.reverse().join(",") + f;
648}
649var d3_formatPrefixes = ["y","z","a","f","p","n","μ","m","","k","M","G","T","P","E","Z","Y"].map(d3_formatPrefix);
650
651d3.formatPrefix = function(value, precision) {
652 var i = 0;
653 if (value) {
654 if (value < 0) value *= -1;
655 if (precision) value = d3.round(value, d3_format_precision(value, precision));
656 i = 1 + Math.floor(1e-12 + Math.log(value) / Math.LN10);
657 i = Math.max(-24, Math.min(24, Math.floor((i <= 0 ? i + 1 : i - 1) / 3) * 3));
658 }
659 return d3_formatPrefixes[8 + i / 3];
660};
661
662function d3_formatPrefix(d, i) {
663 return {
664 scale: Math.pow(10, (8 - i) * 3),
665 symbol: d
666 };
667}
668
669/*
670 * TERMS OF USE - EASING EQUATIONS
671 *
672 * Open source under the BSD License.
673 *
674 * Copyright 2001 Robert Penner
675 * All rights reserved.
676 *
677 * Redistribution and use in source and binary forms, with or without
678 * modification, are permitted provided that the following conditions are met:
679 *
680 * - Redistributions of source code must retain the above copyright notice, this
681 * list of conditions and the following disclaimer.
682 *
683 * - Redistributions in binary form must reproduce the above copyright notice,
684 * this list of conditions and the following disclaimer in the documentation
685 * and/or other materials provided with the distribution.
686 *
687 * - Neither the name of the author nor the names of contributors may be used to
688 * endorse or promote products derived from this software without specific
689 * prior written permission.
690 *
691 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
692 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
693 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
694 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
695 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
696 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
697 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
698 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
699 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
700 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
701 * POSSIBILITY OF SUCH DAMAGE.
702 */
703
704var d3_ease_quad = d3_ease_poly(2),
705 d3_ease_cubic = d3_ease_poly(3);
706
707var d3_ease = {
708 linear: function() { return d3_ease_linear; },
709 poly: d3_ease_poly,
710 quad: function() { return d3_ease_quad; },
711 cubic: function() { return d3_ease_cubic; },
712 sin: function() { return d3_ease_sin; },
713 exp: function() { return d3_ease_exp; },
714 circle: function() { return d3_ease_circle; },
715 elastic: d3_ease_elastic,
716 back: d3_ease_back,
717 bounce: function() { return d3_ease_bounce; }
718};
719
720var d3_ease_mode = {
721 "in": function(f) { return f; },
722 "out": d3_ease_reverse,
723 "in-out": d3_ease_reflect,
724 "out-in": function(f) { return d3_ease_reflect(d3_ease_reverse(f)); }
725};
726
727d3.ease = function(name) {
728 var i = name.indexOf("-"),
729 t = i >= 0 ? name.substring(0, i) : name,
730 m = i >= 0 ? name.substring(i + 1) : "in";
731 return d3_ease_clamp(d3_ease_mode[m](d3_ease[t].apply(null, Array.prototype.slice.call(arguments, 1))));
732};
733
734function d3_ease_clamp(f) {
735 return function(t) {
736 return t <= 0 ? 0 : t >= 1 ? 1 : f(t);
737 };
738}
739
740function d3_ease_reverse(f) {
741 return function(t) {
742 return 1 - f(1 - t);
743 };
744}
745
746function d3_ease_reflect(f) {
747 return function(t) {
748 return .5 * (t < .5 ? f(2 * t) : (2 - f(2 - 2 * t)));
749 };
750}
751
752function d3_ease_linear(t) {
753 return t;
754}
755
756function d3_ease_poly(e) {
757 return function(t) {
758 return Math.pow(t, e);
759 }
760}
761
762function d3_ease_sin(t) {
763 return 1 - Math.cos(t * Math.PI / 2);
764}
765
766function d3_ease_exp(t) {
767 return Math.pow(2, 10 * (t - 1));
768}
769
770function d3_ease_circle(t) {
771 return 1 - Math.sqrt(1 - t * t);
772}
773
774function d3_ease_elastic(a, p) {
775 var s;
776 if (arguments.length < 2) p = 0.45;
777 if (arguments.length < 1) { a = 1; s = p / 4; }
778 else s = p / (2 * Math.PI) * Math.asin(1 / a);
779 return function(t) {
780 return 1 + a * Math.pow(2, 10 * -t) * Math.sin((t - s) * 2 * Math.PI / p);
781 };
782}
783
784function d3_ease_back(s) {
785 if (!s) s = 1.70158;
786 return function(t) {
787 return t * t * ((s + 1) * t - s);
788 };
789}
790
791function d3_ease_bounce(t) {
792 return t < 1 / 2.75 ? 7.5625 * t * t
793 : t < 2 / 2.75 ? 7.5625 * (t -= 1.5 / 2.75) * t + .75
794 : t < 2.5 / 2.75 ? 7.5625 * (t -= 2.25 / 2.75) * t + .9375
795 : 7.5625 * (t -= 2.625 / 2.75) * t + .984375;
796}
797d3.event = null;
798
799function d3_eventCancel() {
800 d3.event.stopPropagation();
801 d3.event.preventDefault();
802}
803d3.interpolate = function(a, b) {
804 var i = d3.interpolators.length, f;
805 while (--i >= 0 && !(f = d3.interpolators[i](a, b)));
806 return f;
807};
808
809d3.interpolateNumber = function(a, b) {
810 b -= a;
811 return function(t) { return a + b * t; };
812};
813
814d3.interpolateRound = function(a, b) {
815 b -= a;
816 return function(t) { return Math.round(a + b * t); };
817};
818
819d3.interpolateString = function(a, b) {
820 var m, // current match
821 i, // current index
822 j, // current index (for coallescing)
823 s0 = 0, // start index of current string prefix
824 s1 = 0, // end index of current string prefix
825 s = [], // string constants and placeholders
826 q = [], // number interpolators
827 n, // q.length
828 o;
829
830 // Reset our regular expression!
831 d3_interpolate_number.lastIndex = 0;
832
833 // Find all numbers in b.
834 for (i = 0; m = d3_interpolate_number.exec(b); ++i) {
835 if (m.index) s.push(b.substring(s0, s1 = m.index));
836 q.push({i: s.length, x: m[0]});
837 s.push(null);
838 s0 = d3_interpolate_number.lastIndex;
839 }
840 if (s0 < b.length) s.push(b.substring(s0));
841
842 // Find all numbers in a.
843 for (i = 0, n = q.length; (m = d3_interpolate_number.exec(a)) && i < n; ++i) {
844 o = q[i];
845 if (o.x == m[0]) { // The numbers match, so coallesce.
846 if (o.i) {
847 if (s[o.i + 1] == null) { // This match is followed by another number.
848 s[o.i - 1] += o.x;
849 s.splice(o.i, 1);
850 for (j = i + 1; j < n; ++j) q[j].i--;
851 } else { // This match is followed by a string, so coallesce twice.
852 s[o.i - 1] += o.x + s[o.i + 1];
853 s.splice(o.i, 2);
854 for (j = i + 1; j < n; ++j) q[j].i -= 2;
855 }
856 } else {
857 if (s[o.i + 1] == null) { // This match is followed by another number.
858 s[o.i] = o.x;
859 } else { // This match is followed by a string, so coallesce twice.
860 s[o.i] = o.x + s[o.i + 1];
861 s.splice(o.i + 1, 1);
862 for (j = i + 1; j < n; ++j) q[j].i--;
863 }
864 }
865 q.splice(i, 1);
866 n--;
867 i--;
868 } else {
869 o.x = d3.interpolateNumber(parseFloat(m[0]), parseFloat(o.x));
870 }
871 }
872
873 // Remove any numbers in b not found in a.
874 while (i < n) {
875 o = q.pop();
876 if (s[o.i + 1] == null) { // This match is followed by another number.
877 s[o.i] = o.x;
878 } else { // This match is followed by a string, so coallesce twice.
879 s[o.i] = o.x + s[o.i + 1];
880 s.splice(o.i + 1, 1);
881 }
882 n--;
883 }
884
885 // Special optimization for only a single match.
886 if (s.length === 1) {
887 return s[0] == null ? q[0].x : function() { return b; };
888 }
889
890 // Otherwise, interpolate each of the numbers and rejoin the string.
891 return function(t) {
892 for (i = 0; i < n; ++i) s[(o = q[i]).i] = o.x(t);
893 return s.join("");
894 };
895};
896
897d3.interpolateTransform = function(a, b) {
898 var s = [], // string constants and placeholders
899 q = [], // number interpolators
900 n,
901 A = d3.transform(a),
902 B = d3.transform(b),
903 ta = A.translate,
904 tb = B.translate,
905 ra = A.rotate,
906 rb = B.rotate,
907 wa = A.skew,
908 wb = B.skew,
909 ka = A.scale,
910 kb = B.scale;
911
912 if (ta[0] != tb[0] || ta[1] != tb[1]) {
913 s.push("translate(", null, ",", null, ")");
914 q.push({i: 1, x: d3.interpolateNumber(ta[0], tb[0])}, {i: 3, x: d3.interpolateNumber(ta[1], tb[1])});
915 } else if (tb[0] || tb[1]) {
916 s.push("translate(" + tb + ")");
917 } else {
918 s.push("");
919 }
920
921 if (ra != rb) {
922 q.push({i: s.push(s.pop() + "rotate(", null, ")") - 2, x: d3.interpolateNumber(ra, rb)});
923 } else if (rb) {
924 s.push(s.pop() + "rotate(" + rb + ")");
925 }
926
927 if (wa != wb) {
928 q.push({i: s.push(s.pop() + "skewX(", null, ")") - 2, x: d3.interpolateNumber(wa, wb)});
929 } else if (wb) {
930 s.push(s.pop() + "skewX(" + wb + ")");
931 }
932
933 if (ka[0] != kb[0] || ka[1] != kb[1]) {
934 n = s.push(s.pop() + "scale(", null, ",", null, ")");
935 q.push({i: n - 4, x: d3.interpolateNumber(ka[0], kb[0])}, {i: n - 2, x: d3.interpolateNumber(ka[1], kb[1])});
936 } else if (kb[0] != 1 || kb[1] != 1) {
937 s.push(s.pop() + "scale(" + kb + ")");
938 }
939
940 n = q.length;
941 return function(t) {
942 var i = -1, o;
943 while (++i < n) s[(o = q[i]).i] = o.x(t);
944 return s.join("");
945 };
946};
947
948d3.interpolateRgb = function(a, b) {
949 a = d3.rgb(a);
950 b = d3.rgb(b);
951 var ar = a.r,
952 ag = a.g,
953 ab = a.b,
954 br = b.r - ar,
955 bg = b.g - ag,
956 bb = b.b - ab;
957 return function(t) {
958 return "#"
959 + d3_rgb_hex(Math.round(ar + br * t))
960 + d3_rgb_hex(Math.round(ag + bg * t))
961 + d3_rgb_hex(Math.round(ab + bb * t));
962 };
963};
964
965// interpolates HSL space, but outputs RGB string (for compatibility)
966d3.interpolateHsl = function(a, b) {
967 a = d3.hsl(a);
968 b = d3.hsl(b);
969 var h0 = a.h,
970 s0 = a.s,
971 l0 = a.l,
972 h1 = b.h - h0,
973 s1 = b.s - s0,
974 l1 = b.l - l0;
975 return function(t) {
976 return d3_hsl_rgb(h0 + h1 * t, s0 + s1 * t, l0 + l1 * t).toString();
977 };
978};
979
980d3.interpolateArray = function(a, b) {
981 var x = [],
982 c = [],
983 na = a.length,
984 nb = b.length,
985 n0 = Math.min(a.length, b.length),
986 i;
987 for (i = 0; i < n0; ++i) x.push(d3.interpolate(a[i], b[i]));
988 for (; i < na; ++i) c[i] = a[i];
989 for (; i < nb; ++i) c[i] = b[i];
990 return function(t) {
991 for (i = 0; i < n0; ++i) c[i] = x[i](t);
992 return c;
993 };
994};
995
996d3.interpolateObject = function(a, b) {
997 var i = {},
998 c = {},
999 k;
1000 for (k in a) {
1001 if (k in b) {
1002 i[k] = d3_interpolateByName(k)(a[k], b[k]);
1003 } else {
1004 c[k] = a[k];
1005 }
1006 }
1007 for (k in b) {
1008 if (!(k in a)) {
1009 c[k] = b[k];
1010 }
1011 }
1012 return function(t) {
1013 for (k in i) c[k] = i[k](t);
1014 return c;
1015 };
1016}
1017
1018var d3_interpolate_number = /[-+]?(?:\d*\.?\d+)(?:[eE][-+]?\d+)?/g;
1019
1020function d3_interpolateByName(n) {
1021 return n == "transform"
1022 ? d3.interpolateTransform
1023 : d3.interpolate;
1024}
1025
1026d3.interpolators = [
1027 d3.interpolateObject,
1028 function(a, b) { return (b instanceof Array) && d3.interpolateArray(a, b); },
1029 function(a, b) { return (typeof a === "string" || typeof b === "string") && d3.interpolateString(a + "", b + ""); },
1030 function(a, b) { return (typeof b === "string" ? b in d3_rgb_names || /^(#|rgb\(|hsl\()/.test(b) : b instanceof d3_Rgb || b instanceof d3_Hsl) && d3.interpolateRgb(a, b); },
1031 function(a, b) { return !isNaN(a = +a) && !isNaN(b = +b) && d3.interpolateNumber(a, b); }
1032];
1033function d3_uninterpolateNumber(a, b) {
1034 b = b - (a = +a) ? 1 / (b - a) : 0;
1035 return function(x) { return (x - a) * b; };
1036}
1037
1038function d3_uninterpolateClamp(a, b) {
1039 b = b - (a = +a) ? 1 / (b - a) : 0;
1040 return function(x) { return Math.max(0, Math.min(1, (x - a) * b)); };
1041}
1042d3.rgb = function(r, g, b) {
1043 return arguments.length === 1
1044 ? (r instanceof d3_Rgb ? d3_rgb(r.r, r.g, r.b)
1045 : d3_rgb_parse("" + r, d3_rgb, d3_hsl_rgb))
1046 : d3_rgb(~~r, ~~g, ~~b);
1047};
1048
1049function d3_rgb(r, g, b) {
1050 return new d3_Rgb(r, g, b);
1051}
1052
1053function d3_Rgb(r, g, b) {
1054 this.r = r;
1055 this.g = g;
1056 this.b = b;
1057}
1058
1059d3_Rgb.prototype.brighter = function(k) {
1060 k = Math.pow(0.7, arguments.length ? k : 1);
1061 var r = this.r,
1062 g = this.g,
1063 b = this.b,
1064 i = 30;
1065 if (!r && !g && !b) return d3_rgb(i, i, i);
1066 if (r && r < i) r = i;
1067 if (g && g < i) g = i;
1068 if (b && b < i) b = i;
1069 return d3_rgb(
1070 Math.min(255, Math.floor(r / k)),
1071 Math.min(255, Math.floor(g / k)),
1072 Math.min(255, Math.floor(b / k)));
1073};
1074
1075d3_Rgb.prototype.darker = function(k) {
1076 k = Math.pow(0.7, arguments.length ? k : 1);
1077 return d3_rgb(
1078 Math.floor(k * this.r),
1079 Math.floor(k * this.g),
1080 Math.floor(k * this.b));
1081};
1082
1083d3_Rgb.prototype.hsl = function() {
1084 return d3_rgb_hsl(this.r, this.g, this.b);
1085};
1086
1087d3_Rgb.prototype.toString = function() {
1088 return "#" + d3_rgb_hex(this.r) + d3_rgb_hex(this.g) + d3_rgb_hex(this.b);
1089};
1090
1091function d3_rgb_hex(v) {
1092 return v < 0x10
1093 ? "0" + Math.max(0, v).toString(16)
1094 : Math.min(255, v).toString(16);
1095}
1096
1097function d3_rgb_parse(format, rgb, hsl) {
1098 var r = 0, // red channel; int in [0, 255]
1099 g = 0, // green channel; int in [0, 255]
1100 b = 0, // blue channel; int in [0, 255]
1101 m1, // CSS color specification match
1102 m2, // CSS color specification type (e.g., rgb)
1103 name;
1104
1105 /* Handle hsl, rgb. */
1106 m1 = /([a-z]+)\((.*)\)/i.exec(format);
1107 if (m1) {
1108 m2 = m1[2].split(",");
1109 switch (m1[1]) {
1110 case "hsl": {
1111 return hsl(
1112 parseFloat(m2[0]), // degrees
1113 parseFloat(m2[1]) / 100, // percentage
1114 parseFloat(m2[2]) / 100 // percentage
1115 );
1116 }
1117 case "rgb": {
1118 return rgb(
1119 d3_rgb_parseNumber(m2[0]),
1120 d3_rgb_parseNumber(m2[1]),
1121 d3_rgb_parseNumber(m2[2])
1122 );
1123 }
1124 }
1125 }
1126
1127 /* Named colors. */
1128 if (name = d3_rgb_names[format]) return rgb(name.r, name.g, name.b);
1129
1130 /* Hexadecimal colors: #rgb and #rrggbb. */
1131 if (format != null && format.charAt(0) === "#") {
1132 if (format.length === 4) {
1133 r = format.charAt(1); r += r;
1134 g = format.charAt(2); g += g;
1135 b = format.charAt(3); b += b;
1136 } else if (format.length === 7) {
1137 r = format.substring(1, 3);
1138 g = format.substring(3, 5);
1139 b = format.substring(5, 7);
1140 }
1141 r = parseInt(r, 16);
1142 g = parseInt(g, 16);
1143 b = parseInt(b, 16);
1144 }
1145
1146 return rgb(r, g, b);
1147}
1148
1149function d3_rgb_hsl(r, g, b) {
1150 var min = Math.min(r /= 255, g /= 255, b /= 255),
1151 max = Math.max(r, g, b),
1152 d = max - min,
1153 h,
1154 s,
1155 l = (max + min) / 2;
1156 if (d) {
1157 s = l < .5 ? d / (max + min) : d / (2 - max - min);
1158 if (r == max) h = (g - b) / d + (g < b ? 6 : 0);
1159 else if (g == max) h = (b - r) / d + 2;
1160 else h = (r - g) / d + 4;
1161 h *= 60;
1162 } else {
1163 s = h = 0;
1164 }
1165 return d3_hsl(h, s, l);
1166}
1167
1168function d3_rgb_parseNumber(c) { // either integer or percentage
1169 var f = parseFloat(c);
1170 return c.charAt(c.length - 1) === "%" ? Math.round(f * 2.55) : f;
1171}
1172
1173var d3_rgb_names = {
1174 aliceblue: "#f0f8ff",
1175 antiquewhite: "#faebd7",
1176 aqua: "#00ffff",
1177 aquamarine: "#7fffd4",
1178 azure: "#f0ffff",
1179 beige: "#f5f5dc",
1180 bisque: "#ffe4c4",
1181 black: "#000000",
1182 blanchedalmond: "#ffebcd",
1183 blue: "#0000ff",
1184 blueviolet: "#8a2be2",
1185 brown: "#a52a2a",
1186 burlywood: "#deb887",
1187 cadetblue: "#5f9ea0",
1188 chartreuse: "#7fff00",
1189 chocolate: "#d2691e",
1190 coral: "#ff7f50",
1191 cornflowerblue: "#6495ed",
1192 cornsilk: "#fff8dc",
1193 crimson: "#dc143c",
1194 cyan: "#00ffff",
1195 darkblue: "#00008b",
1196 darkcyan: "#008b8b",
1197 darkgoldenrod: "#b8860b",
1198 darkgray: "#a9a9a9",
1199 darkgreen: "#006400",
1200 darkgrey: "#a9a9a9",
1201 darkkhaki: "#bdb76b",
1202 darkmagenta: "#8b008b",
1203 darkolivegreen: "#556b2f",
1204 darkorange: "#ff8c00",
1205 darkorchid: "#9932cc",
1206 darkred: "#8b0000",
1207 darksalmon: "#e9967a",
1208 darkseagreen: "#8fbc8f",
1209 darkslateblue: "#483d8b",
1210 darkslategray: "#2f4f4f",
1211 darkslategrey: "#2f4f4f",
1212 darkturquoise: "#00ced1",
1213 darkviolet: "#9400d3",
1214 deeppink: "#ff1493",
1215 deepskyblue: "#00bfff",
1216 dimgray: "#696969",
1217 dimgrey: "#696969",
1218 dodgerblue: "#1e90ff",
1219 firebrick: "#b22222",
1220 floralwhite: "#fffaf0",
1221 forestgreen: "#228b22",
1222 fuchsia: "#ff00ff",
1223 gainsboro: "#dcdcdc",
1224 ghostwhite: "#f8f8ff",
1225 gold: "#ffd700",
1226 goldenrod: "#daa520",
1227 gray: "#808080",
1228 green: "#008000",
1229 greenyellow: "#adff2f",
1230 grey: "#808080",
1231 honeydew: "#f0fff0",
1232 hotpink: "#ff69b4",
1233 indianred: "#cd5c5c",
1234 indigo: "#4b0082",
1235 ivory: "#fffff0",
1236 khaki: "#f0e68c",
1237 lavender: "#e6e6fa",
1238 lavenderblush: "#fff0f5",
1239 lawngreen: "#7cfc00",
1240 lemonchiffon: "#fffacd",
1241 lightblue: "#add8e6",
1242 lightcoral: "#f08080",
1243 lightcyan: "#e0ffff",
1244 lightgoldenrodyellow: "#fafad2",
1245 lightgray: "#d3d3d3",
1246 lightgreen: "#90ee90",
1247 lightgrey: "#d3d3d3",
1248 lightpink: "#ffb6c1",
1249 lightsalmon: "#ffa07a",
1250 lightseagreen: "#20b2aa",
1251 lightskyblue: "#87cefa",
1252 lightslategray: "#778899",
1253 lightslategrey: "#778899",
1254 lightsteelblue: "#b0c4de",
1255 lightyellow: "#ffffe0",
1256 lime: "#00ff00",
1257 limegreen: "#32cd32",
1258 linen: "#faf0e6",
1259 magenta: "#ff00ff",
1260 maroon: "#800000",
1261 mediumaquamarine: "#66cdaa",
1262 mediumblue: "#0000cd",
1263 mediumorchid: "#ba55d3",
1264 mediumpurple: "#9370db",
1265 mediumseagreen: "#3cb371",
1266 mediumslateblue: "#7b68ee",
1267 mediumspringgreen: "#00fa9a",
1268 mediumturquoise: "#48d1cc",
1269 mediumvioletred: "#c71585",
1270 midnightblue: "#191970",
1271 mintcream: "#f5fffa",
1272 mistyrose: "#ffe4e1",
1273 moccasin: "#ffe4b5",
1274 navajowhite: "#ffdead",
1275 navy: "#000080",
1276 oldlace: "#fdf5e6",
1277 olive: "#808000",
1278 olivedrab: "#6b8e23",
1279 orange: "#ffa500",
1280 orangered: "#ff4500",
1281 orchid: "#da70d6",
1282 palegoldenrod: "#eee8aa",
1283 palegreen: "#98fb98",
1284 paleturquoise: "#afeeee",
1285 palevioletred: "#db7093",
1286 papayawhip: "#ffefd5",
1287 peachpuff: "#ffdab9",
1288 peru: "#cd853f",
1289 pink: "#ffc0cb",
1290 plum: "#dda0dd",
1291 powderblue: "#b0e0e6",
1292 purple: "#800080",
1293 red: "#ff0000",
1294 rosybrown: "#bc8f8f",
1295 royalblue: "#4169e1",
1296 saddlebrown: "#8b4513",
1297 salmon: "#fa8072",
1298 sandybrown: "#f4a460",
1299 seagreen: "#2e8b57",
1300 seashell: "#fff5ee",
1301 sienna: "#a0522d",
1302 silver: "#c0c0c0",
1303 skyblue: "#87ceeb",
1304 slateblue: "#6a5acd",
1305 slategray: "#708090",
1306 slategrey: "#708090",
1307 snow: "#fffafa",
1308 springgreen: "#00ff7f",
1309 steelblue: "#4682b4",
1310 tan: "#d2b48c",
1311 teal: "#008080",
1312 thistle: "#d8bfd8",
1313 tomato: "#ff6347",
1314 turquoise: "#40e0d0",
1315 violet: "#ee82ee",
1316 wheat: "#f5deb3",
1317 white: "#ffffff",
1318 whitesmoke: "#f5f5f5",
1319 yellow: "#ffff00",
1320 yellowgreen: "#9acd32"
1321};
1322
1323for (var d3_rgb_name in d3_rgb_names) {
1324 d3_rgb_names[d3_rgb_name] = d3_rgb_parse(
1325 d3_rgb_names[d3_rgb_name],
1326 d3_rgb,
1327 d3_hsl_rgb);
1328}
1329d3.hsl = function(h, s, l) {
1330 return arguments.length === 1
1331 ? (h instanceof d3_Hsl ? d3_hsl(h.h, h.s, h.l)
1332 : d3_rgb_parse("" + h, d3_rgb_hsl, d3_hsl))
1333 : d3_hsl(+h, +s, +l);
1334};
1335
1336function d3_hsl(h, s, l) {
1337 return new d3_Hsl(h, s, l);
1338}
1339
1340function d3_Hsl(h, s, l) {
1341 this.h = h;
1342 this.s = s;
1343 this.l = l;
1344}
1345
1346d3_Hsl.prototype.brighter = function(k) {
1347 k = Math.pow(0.7, arguments.length ? k : 1);
1348 return d3_hsl(this.h, this.s, this.l / k);
1349};
1350
1351d3_Hsl.prototype.darker = function(k) {
1352 k = Math.pow(0.7, arguments.length ? k : 1);
1353 return d3_hsl(this.h, this.s, k * this.l);
1354};
1355
1356d3_Hsl.prototype.rgb = function() {
1357 return d3_hsl_rgb(this.h, this.s, this.l);
1358};
1359
1360d3_Hsl.prototype.toString = function() {
1361 return this.rgb().toString();
1362};
1363
1364function d3_hsl_rgb(h, s, l) {
1365 var m1,
1366 m2;
1367
1368 /* Some simple corrections for h, s and l. */
1369 h = h % 360; if (h < 0) h += 360;
1370 s = s < 0 ? 0 : s > 1 ? 1 : s;
1371 l = l < 0 ? 0 : l > 1 ? 1 : l;
1372
1373 /* From FvD 13.37, CSS Color Module Level 3 */
1374 m2 = l <= .5 ? l * (1 + s) : l + s - l * s;
1375 m1 = 2 * l - m2;
1376
1377 function v(h) {
1378 if (h > 360) h -= 360;
1379 else if (h < 0) h += 360;
1380 if (h < 60) return m1 + (m2 - m1) * h / 60;
1381 if (h < 180) return m2;
1382 if (h < 240) return m1 + (m2 - m1) * (240 - h) / 60;
1383 return m1;
1384 }
1385
1386 function vv(h) {
1387 return Math.round(v(h) * 255);
1388 }
1389
1390 return d3_rgb(vv(h + 120), vv(h), vv(h - 120));
1391}
1392function d3_selection(groups) {
1393 d3_arraySubclass(groups, d3_selectionPrototype);
1394 return groups;
1395}
1396
1397var d3_select = function(s, n) { return n.querySelector(s); },
1398 d3_selectAll = function(s, n) { return n.querySelectorAll(s); },
1399 d3_selectRoot = document.documentElement,
1400 d3_selectMatcher = d3_selectRoot.matchesSelector || d3_selectRoot.webkitMatchesSelector || d3_selectRoot.mozMatchesSelector || d3_selectRoot.msMatchesSelector || d3_selectRoot.oMatchesSelector,
1401 d3_selectMatches = function(n, s) { return d3_selectMatcher.call(n, s); };
1402
1403// Prefer Sizzle, if available.
1404if (typeof Sizzle === "function") {
1405 d3_select = function(s, n) { return Sizzle(s, n)[0]; };
1406 d3_selectAll = function(s, n) { return Sizzle.uniqueSort(Sizzle(s, n)); };
1407 d3_selectMatches = Sizzle.matchesSelector;
1408}
1409
1410var d3_selectionPrototype = [];
1411
1412d3.selection = function() {
1413 return d3_selectionRoot;
1414};
1415
1416d3.selection.prototype = d3_selectionPrototype;
1417d3_selectionPrototype.select = function(selector) {
1418 var subgroups = [],
1419 subgroup,
1420 subnode,
1421 group,
1422 node;
1423
1424 if (typeof selector !== "function") selector = d3_selection_selector(selector);
1425
1426 for (var j = -1, m = this.length; ++j < m;) {
1427 subgroups.push(subgroup = []);
1428 subgroup.parentNode = (group = this[j]).parentNode;
1429 for (var i = -1, n = group.length; ++i < n;) {
1430 if (node = group[i]) {
1431 subgroup.push(subnode = selector.call(node, node.__data__, i));
1432 if (subnode && "__data__" in node) subnode.__data__ = node.__data__;
1433 } else {
1434 subgroup.push(null);
1435 }
1436 }
1437 }
1438
1439 return d3_selection(subgroups);
1440};
1441
1442function d3_selection_selector(selector) {
1443 return function() {
1444 return d3_select(selector, this);
1445 };
1446}
1447d3_selectionPrototype.selectAll = function(selector) {
1448 var subgroups = [],
1449 subgroup,
1450 node;
1451
1452 if (typeof selector !== "function") selector = d3_selection_selectorAll(selector);
1453
1454 for (var j = -1, m = this.length; ++j < m;) {
1455 for (var group = this[j], i = -1, n = group.length; ++i < n;) {
1456 if (node = group[i]) {
1457 subgroups.push(subgroup = d3_array(selector.call(node, node.__data__, i)));
1458 subgroup.parentNode = node;
1459 }
1460 }
1461 }
1462
1463 return d3_selection(subgroups);
1464};
1465
1466function d3_selection_selectorAll(selector) {
1467 return function() {
1468 return d3_selectAll(selector, this);
1469 };
1470}
1471d3_selectionPrototype.attr = function(name, value) {
1472 name = d3.ns.qualify(name);
1473
1474 // If no value is specified, return the first value.
1475 if (arguments.length < 2) {
1476 var node = this.node();
1477 return name.local
1478 ? node.getAttributeNS(name.space, name.local)
1479 : node.getAttribute(name);
1480 }
1481
1482 function attrNull() {
1483 this.removeAttribute(name);
1484 }
1485
1486 function attrNullNS() {
1487 this.removeAttributeNS(name.space, name.local);
1488 }
1489
1490 function attrConstant() {
1491 this.setAttribute(name, value);
1492 }
1493
1494 function attrConstantNS() {
1495 this.setAttributeNS(name.space, name.local, value);
1496 }
1497
1498 function attrFunction() {
1499 var x = value.apply(this, arguments);
1500 if (x == null) this.removeAttribute(name);
1501 else this.setAttribute(name, x);
1502 }
1503
1504 function attrFunctionNS() {
1505 var x = value.apply(this, arguments);
1506 if (x == null) this.removeAttributeNS(name.space, name.local);
1507 else this.setAttributeNS(name.space, name.local, x);
1508 }
1509
1510 return this.each(value == null
1511 ? (name.local ? attrNullNS : attrNull) : (typeof value === "function"
1512 ? (name.local ? attrFunctionNS : attrFunction)
1513 : (name.local ? attrConstantNS : attrConstant)));
1514};
1515d3_selectionPrototype.classed = function(name, value) {
1516 var names = name.split(d3_selection_classedWhitespace),
1517 n = names.length,
1518 i = -1;
1519 if (arguments.length > 1) {
1520 while (++i < n) d3_selection_classed.call(this, names[i], value);
1521 return this;
1522 } else {
1523 while (++i < n) if (!d3_selection_classed.call(this, names[i])) return false;
1524 return true;
1525 }
1526};
1527
1528var d3_selection_classedWhitespace = /\s+/g;
1529
1530function d3_selection_classed(name, value) {
1531 var re = new RegExp("(^|\\s+)" + d3.requote(name) + "(\\s+|$)", "g");
1532
1533 // If no value is specified, return the first value.
1534 if (arguments.length < 2) {
1535 var node = this.node();
1536 if (c = node.classList) return c.contains(name);
1537 var c = node.className;
1538 re.lastIndex = 0;
1539 return re.test(c.baseVal != null ? c.baseVal : c);
1540 }
1541
1542 function classedAdd() {
1543 if (c = this.classList) return c.add(name);
1544 var c = this.className,
1545 cb = c.baseVal != null,
1546 cv = cb ? c.baseVal : c;
1547 re.lastIndex = 0;
1548 if (!re.test(cv)) {
1549 cv = d3_collapse(cv + " " + name);
1550 if (cb) c.baseVal = cv;
1551 else this.className = cv;
1552 }
1553 }
1554
1555 function classedRemove() {
1556 if (c = this.classList) return c.remove(name);
1557 var c = this.className,
1558 cb = c.baseVal != null,
1559 cv = cb ? c.baseVal : c;
1560 cv = d3_collapse(cv.replace(re, " "));
1561 if (cb) c.baseVal = cv;
1562 else this.className = cv;
1563 }
1564
1565 function classedFunction() {
1566 (value.apply(this, arguments)
1567 ? classedAdd
1568 : classedRemove).call(this);
1569 }
1570
1571 return this.each(typeof value === "function"
1572 ? classedFunction : value
1573 ? classedAdd
1574 : classedRemove);
1575}
1576d3_selectionPrototype.style = function(name, value, priority) {
1577 if (arguments.length < 3) priority = "";
1578
1579 // If no value is specified, return the first value.
1580 if (arguments.length < 2) return window
1581 .getComputedStyle(this.node(), null)
1582 .getPropertyValue(name);
1583
1584 function styleNull() {
1585 this.style.removeProperty(name);
1586 }
1587
1588 function styleConstant() {
1589 this.style.setProperty(name, value, priority);
1590 }
1591
1592 function styleFunction() {
1593 var x = value.apply(this, arguments);
1594 if (x == null) this.style.removeProperty(name);
1595 else this.style.setProperty(name, x, priority);
1596 }
1597
1598 return this.each(value == null
1599 ? styleNull : (typeof value === "function"
1600 ? styleFunction : styleConstant));
1601};
1602d3_selectionPrototype.property = function(name, value) {
1603
1604 // If no value is specified, return the first value.
1605 if (arguments.length < 2) return this.node()[name];
1606
1607 function propertyNull() {
1608 delete this[name];
1609 }
1610
1611 function propertyConstant() {
1612 this[name] = value;
1613 }
1614
1615 function propertyFunction() {
1616 var x = value.apply(this, arguments);
1617 if (x == null) delete this[name];
1618 else this[name] = x;
1619 }
1620
1621 return this.each(value == null
1622 ? propertyNull : (typeof value === "function"
1623 ? propertyFunction : propertyConstant));
1624};
1625d3_selectionPrototype.text = function(value) {
1626 return arguments.length < 1
1627 ? this.node().textContent : this.each(typeof value === "function"
1628 ? function() { var v = value.apply(this, arguments); this.textContent = v == null ? "" : v; } : value == null
1629 ? function() { this.textContent = ""; }
1630 : function() { this.textContent = value; });
1631};
1632d3_selectionPrototype.html = function(value) {
1633 return arguments.length < 1
1634 ? this.node().innerHTML : this.each(typeof value === "function"
1635 ? function() { var v = value.apply(this, arguments); this.innerHTML = v == null ? "" : v; } : value == null
1636 ? function() { this.innerHTML = ""; }
1637 : function() { this.innerHTML = value; });
1638};
1639// TODO append(node)?
1640// TODO append(function)?
1641d3_selectionPrototype.append = function(name) {
1642 name = d3.ns.qualify(name);
1643
1644 function append() {
1645 return this.appendChild(document.createElementNS(this.namespaceURI, name));
1646 }
1647
1648 function appendNS() {
1649 return this.appendChild(document.createElementNS(name.space, name.local));
1650 }
1651
1652 return this.select(name.local ? appendNS : append);
1653};
1654// TODO insert(node, function)?
1655// TODO insert(function, string)?
1656// TODO insert(function, function)?
1657d3_selectionPrototype.insert = function(name, before) {
1658 name = d3.ns.qualify(name);
1659
1660 function insert() {
1661 return this.insertBefore(
1662 document.createElementNS(this.namespaceURI, name),
1663 d3_select(before, this));
1664 }
1665
1666 function insertNS() {
1667 return this.insertBefore(
1668 document.createElementNS(name.space, name.local),
1669 d3_select(before, this));
1670 }
1671
1672 return this.select(name.local ? insertNS : insert);
1673};
1674// TODO remove(selector)?
1675// TODO remove(node)?
1676// TODO remove(function)?
1677d3_selectionPrototype.remove = function() {
1678 return this.each(function() {
1679 var parent = this.parentNode;
1680 if (parent) parent.removeChild(this);
1681 });
1682};
1683// TODO data(null) for clearing data?
1684d3_selectionPrototype.data = function(data, join) {
1685 var enter = [],
1686 update = [],
1687 exit = [];
1688
1689 function bind(group, groupData) {
1690 var i,
1691 n = group.length,
1692 m = groupData.length,
1693 n0 = Math.min(n, m),
1694 n1 = Math.max(n, m),
1695 updateNodes = [],
1696 enterNodes = [],
1697 exitNodes = [],
1698 node,
1699 nodeData;
1700
1701 if (join) {
1702 var nodeByKey = {},
1703 keys = [],
1704 key,
1705 j = groupData.length;
1706
1707 for (i = -1; ++i < n;) {
1708 key = join.call(node = group[i], node.__data__, i);
1709 if (key in nodeByKey) {
1710 exitNodes[j++] = node; // duplicate key
1711 } else {
1712 nodeByKey[key] = node;
1713 }
1714 keys.push(key);
1715 }
1716
1717 for (i = -1; ++i < m;) {
1718 node = nodeByKey[key = join.call(groupData, nodeData = groupData[i], i)];
1719 if (node) {
1720 node.__data__ = nodeData;
1721 updateNodes[i] = node;
1722 enterNodes[i] = exitNodes[i] = null;
1723 } else {
1724 enterNodes[i] = d3_selection_dataNode(nodeData);
1725 updateNodes[i] = exitNodes[i] = null;
1726 }
1727 delete nodeByKey[key];
1728 }
1729
1730 for (i = -1; ++i < n;) {
1731 if (keys[i] in nodeByKey) {
1732 exitNodes[i] = group[i];
1733 }
1734 }
1735 } else {
1736 for (i = -1; ++i < n0;) {
1737 node = group[i];
1738 nodeData = groupData[i];
1739 if (node) {
1740 node.__data__ = nodeData;
1741 updateNodes[i] = node;
1742 enterNodes[i] = exitNodes[i] = null;
1743 } else {
1744 enterNodes[i] = d3_selection_dataNode(nodeData);
1745 updateNodes[i] = exitNodes[i] = null;
1746 }
1747 }
1748 for (; i < m; ++i) {
1749 enterNodes[i] = d3_selection_dataNode(groupData[i]);
1750 updateNodes[i] = exitNodes[i] = null;
1751 }
1752 for (; i < n1; ++i) {
1753 exitNodes[i] = group[i];
1754 enterNodes[i] = updateNodes[i] = null;
1755 }
1756 }
1757
1758 enterNodes.update
1759 = updateNodes;
1760
1761 enterNodes.parentNode
1762 = updateNodes.parentNode
1763 = exitNodes.parentNode
1764 = group.parentNode;
1765
1766 enter.push(enterNodes);
1767 update.push(updateNodes);
1768 exit.push(exitNodes);
1769 }
1770
1771 var i = -1,
1772 n = this.length,
1773 group;
1774 if (typeof data === "function") {
1775 while (++i < n) {
1776 bind(group = this[i], data.call(group, group.parentNode.__data__, i));
1777 }
1778 } else {
1779 while (++i < n) {
1780 bind(group = this[i], data);
1781 }
1782 }
1783
1784 var selection = d3_selection(update);
1785 selection.enter = function() { return d3_selection_enter(enter); };
1786 selection.exit = function() { return d3_selection(exit); };
1787 return selection;
1788};
1789
1790function d3_selection_dataNode(data) {
1791 return {__data__: data};
1792}
1793d3_selectionPrototype.filter = function(filter) {
1794 var subgroups = [],
1795 subgroup,
1796 group,
1797 node;
1798
1799 if (typeof filter !== "function") filter = d3_selection_filter(filter);
1800
1801 for (var j = 0, m = this.length; j < m; j++) {
1802 subgroups.push(subgroup = []);
1803 subgroup.parentNode = (group = this[j]).parentNode;
1804 for (var i = 0, n = group.length; i < n; i++) {
1805 if ((node = group[i]) && filter.call(node, node.__data__, i)) {
1806 subgroup.push(node);
1807 }
1808 }
1809 }
1810
1811 return d3_selection(subgroups);
1812};
1813
1814function d3_selection_filter(selector) {
1815 return function() {
1816 return d3_selectMatches(this, selector);
1817 };
1818}
1819d3_selectionPrototype.map = function(map) {
1820 return this.each(function() {
1821 this.__data__ = map.apply(this, arguments);
1822 });
1823};
1824d3_selectionPrototype.order = function() {
1825 for (var j = -1, m = this.length; ++j < m;) {
1826 for (var group = this[j], i = group.length - 1, next = group[i], node; --i >= 0;) {
1827 if (node = group[i]) {
1828 if (next && next !== node.nextSibling) next.parentNode.insertBefore(node, next);
1829 next = node;
1830 }
1831 }
1832 }
1833 return this;
1834};
1835d3_selectionPrototype.sort = function(comparator) {
1836 comparator = d3_selection_sortComparator.apply(this, arguments);
1837 for (var j = -1, m = this.length; ++j < m;) this[j].sort(comparator);
1838 return this.order();
1839};
1840
1841function d3_selection_sortComparator(comparator) {
1842 if (!arguments.length) comparator = d3.ascending;
1843 return function(a, b) {
1844 return comparator(a && a.__data__, b && b.__data__);
1845 };
1846}
1847// type can be namespaced, e.g., "click.foo"
1848// listener can be null for removal
1849d3_selectionPrototype.on = function(type, listener, capture) {
1850 if (arguments.length < 3) capture = false;
1851
1852 // parse the type specifier
1853 var name = "__on" + type, i = type.indexOf(".");
1854 if (i > 0) type = type.substring(0, i);
1855
1856 // if called with only one argument, return the current listener
1857 if (arguments.length < 2) return (i = this.node()[name]) && i._;
1858
1859 // remove the old event listener, and add the new event listener
1860 return this.each(function(d, i) {
1861 var node = this;
1862
1863 if (node[name]) node.removeEventListener(type, node[name], capture);
1864 if (listener) node.addEventListener(type, node[name] = l, capture);
1865
1866 // wrapped event listener that preserves i
1867 function l(e) {
1868 var o = d3.event; // Events can be reentrant (e.g., focus).
1869 d3.event = e;
1870 try {
1871 listener.call(node, node.__data__, i);
1872 } finally {
1873 d3.event = o;
1874 }
1875 }
1876
1877 // stash the unwrapped listener for retrieval
1878 l._ = listener;
1879 });
1880};
1881d3_selectionPrototype.each = function(callback) {
1882 for (var j = -1, m = this.length; ++j < m;) {
1883 for (var group = this[j], i = -1, n = group.length; ++i < n;) {
1884 var node = group[i];
1885 if (node) callback.call(node, node.__data__, i, j);
1886 }
1887 }
1888 return this;
1889};
1890//
1891// Note: assigning to the arguments array simultaneously changes the value of
1892// the corresponding argument!
1893//
1894// TODO The `this` argument probably shouldn't be the first argument to the
1895// callback, anyway, since it's redundant. However, that will require a major
1896// version bump due to backwards compatibility, so I'm not changing it right
1897// away.
1898//
1899d3_selectionPrototype.call = function(callback) {
1900 callback.apply(this, (arguments[0] = this, arguments));
1901 return this;
1902};
1903d3_selectionPrototype.empty = function() {
1904 return !this.node();
1905};
1906d3_selectionPrototype.node = function(callback) {
1907 for (var j = 0, m = this.length; j < m; j++) {
1908 for (var group = this[j], i = 0, n = group.length; i < n; i++) {
1909 var node = group[i];
1910 if (node) return node;
1911 }
1912 }
1913 return null;
1914};
1915d3_selectionPrototype.transition = function() {
1916 var subgroups = [],
1917 subgroup,
1918 node;
1919
1920 for (var j = -1, m = this.length; ++j < m;) {
1921 subgroups.push(subgroup = []);
1922 for (var group = this[j], i = -1, n = group.length; ++i < n;) {
1923 subgroup.push((node = group[i]) ? {node: node, delay: 0, duration: 250} : null);
1924 }
1925 }
1926
1927 return d3_transition(subgroups, d3_transitionInheritId || ++d3_transitionId, Date.now());
1928};
1929var d3_selectionRoot = d3_selection([[document]]);
1930
1931d3_selectionRoot[0].parentNode = d3_selectRoot;
1932
1933// TODO fast singleton implementation!
1934// TODO select(function)
1935d3.select = function(selector) {
1936 return typeof selector === "string"
1937 ? d3_selectionRoot.select(selector)
1938 : d3_selection([[selector]]); // assume node
1939};
1940
1941// TODO selectAll(function)
1942d3.selectAll = function(selector) {
1943 return typeof selector === "string"
1944 ? d3_selectionRoot.selectAll(selector)
1945 : d3_selection([d3_array(selector)]); // assume node[]
1946};
1947function d3_selection_enter(selection) {
1948 d3_arraySubclass(selection, d3_selection_enterPrototype);
1949 return selection;
1950}
1951
1952var d3_selection_enterPrototype = [];
1953
1954d3_selection_enterPrototype.append = d3_selectionPrototype.append;
1955d3_selection_enterPrototype.insert = d3_selectionPrototype.insert;
1956d3_selection_enterPrototype.empty = d3_selectionPrototype.empty;
1957d3_selection_enterPrototype.node = d3_selectionPrototype.node;
1958d3_selection_enterPrototype.select = function(selector) {
1959 var subgroups = [],
1960 subgroup,
1961 subnode,
1962 upgroup,
1963 group,
1964 node;
1965
1966 for (var j = -1, m = this.length; ++j < m;) {
1967 upgroup = (group = this[j]).update;
1968 subgroups.push(subgroup = []);
1969 subgroup.parentNode = group.parentNode;
1970 for (var i = -1, n = group.length; ++i < n;) {
1971 if (node = group[i]) {
1972 subgroup.push(upgroup[i] = subnode = selector.call(group.parentNode, node.__data__, i));
1973 subnode.__data__ = node.__data__;
1974 } else {
1975 subgroup.push(null);
1976 }
1977 }
1978 }
1979
1980 return d3_selection(subgroups);
1981};
1982function d3_transition(groups, id, time) {
1983 d3_arraySubclass(groups, d3_transitionPrototype);
1984
1985 var tweens = {},
1986 event = d3.dispatch("start", "end"),
1987 ease = d3_transitionEase;
1988
1989 groups.id = id;
1990
1991 groups.time = time;
1992
1993 groups.tween = function(name, tween) {
1994 if (arguments.length < 2) return tweens[name];
1995 if (tween == null) delete tweens[name];
1996 else tweens[name] = tween;
1997 return groups;
1998 };
1999
2000 groups.ease = function(value) {
2001 if (!arguments.length) return ease;
2002 ease = typeof value === "function" ? value : d3.ease.apply(d3, arguments);
2003 return groups;
2004 };
2005
2006 groups.each = function(type, listener) {
2007 if (arguments.length < 2) return d3_transition_each.call(groups, type);
2008 event.on(type, listener);
2009 return groups;
2010 };
2011
2012 d3.timer(function(elapsed) {
2013 groups.each(function(d, i, j) {
2014 var tweened = [],
2015 node = this,
2016 delay = groups[j][i].delay,
2017 duration = groups[j][i].duration,
2018 lock = node.__transition__ || (node.__transition__ = {active: 0, count: 0});
2019
2020 ++lock.count;
2021
2022 delay <= elapsed ? start(elapsed) : d3.timer(start, delay, time);
2023
2024 function start(elapsed) {
2025 if (lock.active > id) return stop();
2026 lock.active = id;
2027
2028 for (var tween in tweens) {
2029 if (tween = tweens[tween].call(node, d, i)) {
2030 tweened.push(tween);
2031 }
2032 }
2033
2034 event.start.call(node, d, i);
2035 if (!tick(elapsed)) d3.timer(tick, 0, time);
2036 return 1;
2037 }
2038
2039 function tick(elapsed) {
2040 if (lock.active !== id) return stop();
2041
2042 var t = (elapsed - delay) / duration,
2043 e = ease(t),
2044 n = tweened.length;
2045
2046 while (n > 0) {
2047 tweened[--n].call(node, e);
2048 }
2049
2050 if (t >= 1) {
2051 stop();
2052 d3_transitionInheritId = id;
2053 event.end.call(node, d, i);
2054 d3_transitionInheritId = 0;
2055 return 1;
2056 }
2057 }
2058
2059 function stop() {
2060 if (!--lock.count) delete node.__transition__;
2061 return 1;
2062 }
2063 });
2064 return 1;
2065 }, 0, time);
2066
2067 return groups;
2068}
2069
2070var d3_transitionRemove = {};
2071
2072function d3_transitionNull(d, i, a) {
2073 return a != "" && d3_transitionRemove;
2074}
2075
2076function d3_transitionTween(name, b) {
2077 var interpolate = d3_interpolateByName(name);
2078
2079 function transitionFunction(d, i, a) {
2080 var v = b.call(this, d, i);
2081 return v == null
2082 ? a != "" && d3_transitionRemove
2083 : a != v && interpolate(a, v);
2084 }
2085
2086 function transitionString(d, i, a) {
2087 return a != b && interpolate(a, b);
2088 }
2089
2090 return typeof b === "function" ? transitionFunction
2091 : b == null ? d3_transitionNull
2092 : (b += "", transitionString);
2093}
2094
2095var d3_transitionPrototype = [],
2096 d3_transitionId = 0,
2097 d3_transitionInheritId = 0,
2098 d3_transitionEase = d3.ease("cubic-in-out");
2099
2100d3_transitionPrototype.call = d3_selectionPrototype.call;
2101
2102d3.transition = function() {
2103 return d3_selectionRoot.transition();
2104};
2105
2106d3.transition.prototype = d3_transitionPrototype;
2107d3_transitionPrototype.select = function(selector) {
2108 var subgroups = [],
2109 subgroup,
2110 subnode,
2111 node;
2112
2113 if (typeof selector !== "function") selector = d3_selection_selector(selector);
2114
2115 for (var j = -1, m = this.length; ++j < m;) {
2116 subgroups.push(subgroup = []);
2117 for (var group = this[j], i = -1, n = group.length; ++i < n;) {
2118 if ((node = group[i]) && (subnode = selector.call(node.node, node.node.__data__, i))) {
2119 if ("__data__" in node.node) subnode.__data__ = node.node.__data__;
2120 subgroup.push({node: subnode, delay: node.delay, duration: node.duration});
2121 } else {
2122 subgroup.push(null);
2123 }
2124 }
2125 }
2126
2127 return d3_transition(subgroups, this.id, this.time).ease(this.ease());
2128};
2129d3_transitionPrototype.selectAll = function(selector) {
2130 var subgroups = [],
2131 subgroup,
2132 subnodes,
2133 node;
2134
2135 if (typeof selector !== "function") selector = d3_selection_selectorAll(selector);
2136
2137 for (var j = -1, m = this.length; ++j < m;) {
2138 for (var group = this[j], i = -1, n = group.length; ++i < n;) {
2139 if (node = group[i]) {
2140 subnodes = selector.call(node.node, node.node.__data__, i);
2141 subgroups.push(subgroup = []);
2142 for (var k = -1, o = subnodes.length; ++k < o;) {
2143 subgroup.push({node: subnodes[k], delay: node.delay, duration: node.duration});
2144 }
2145 }
2146 }
2147 }
2148
2149 return d3_transition(subgroups, this.id, this.time).ease(this.ease());
2150};
2151d3_transitionPrototype.attr = function(name, value) {
2152 return this.attrTween(name, d3_transitionTween(name, value));
2153};
2154
2155d3_transitionPrototype.attrTween = function(nameNS, tween) {
2156 var name = d3.ns.qualify(nameNS);
2157
2158 function attrTween(d, i) {
2159 var f = tween.call(this, d, i, this.getAttribute(name));
2160 return f === d3_transitionRemove
2161 ? (this.removeAttribute(name), null)
2162 : f && function(t) { this.setAttribute(name, f(t)); };
2163 }
2164
2165 function attrTweenNS(d, i) {
2166 var f = tween.call(this, d, i, this.getAttributeNS(name.space, name.local));
2167 return f === d3_transitionRemove
2168 ? (this.removeAttributeNS(name.space, name.local), null)
2169 : f && function(t) { this.setAttributeNS(name.space, name.local, f(t)); };
2170 }
2171
2172 return this.tween("attr." + nameNS, name.local ? attrTweenNS : attrTween);
2173};
2174d3_transitionPrototype.style = function(name, value, priority) {
2175 if (arguments.length < 3) priority = "";
2176 return this.styleTween(name, d3_transitionTween(name, value), priority);
2177};
2178
2179d3_transitionPrototype.styleTween = function(name, tween, priority) {
2180 if (arguments.length < 3) priority = "";
2181 return this.tween("style." + name, function(d, i) {
2182 var f = tween.call(this, d, i, window.getComputedStyle(this, null).getPropertyValue(name));
2183 return f === d3_transitionRemove
2184 ? (this.style.removeProperty(name), null)
2185 : f && function(t) { this.style.setProperty(name, f(t), priority); };
2186 });
2187};
2188d3_transitionPrototype.text = function(value) {
2189 return this.tween("text", function(d, i) {
2190 this.textContent = typeof value === "function"
2191 ? value.call(this, d, i)
2192 : value;
2193 });
2194};
2195d3_transitionPrototype.remove = function() {
2196 return this.each("end.transition", function() {
2197 var p;
2198 if (!this.__transition__ && (p = this.parentNode)) p.removeChild(this);
2199 });
2200};
2201d3_transitionPrototype.delay = function(value) {
2202 var groups = this;
2203 return groups.each(typeof value === "function"
2204 ? function(d, i, j) { groups[j][i].delay = +value.apply(this, arguments); }
2205 : (value = +value, function(d, i, j) { groups[j][i].delay = value; }));
2206};
2207d3_transitionPrototype.duration = function(value) {
2208 var groups = this;
2209 return groups.each(typeof value === "function"
2210 ? function(d, i, j) { groups[j][i].duration = +value.apply(this, arguments); }
2211 : (value = +value, function(d, i, j) { groups[j][i].duration = value; }));
2212};
2213function d3_transition_each(callback) {
2214 for (var j = 0, m = this.length; j < m; j++) {
2215 for (var group = this[j], i = 0, n = group.length; i < n; i++) {
2216 var node = group[i];
2217 if (node) callback.call(node = node.node, node.__data__, i, j);
2218 }
2219 }
2220 return this;
2221}
2222d3_transitionPrototype.transition = function() {
2223 return this.select(d3_this);
2224};
2225var d3_timer_queue = null,
2226 d3_timer_interval, // is an interval (or frame) active?
2227 d3_timer_timeout; // is a timeout active?
2228
2229// The timer will continue to fire until callback returns true.
2230d3.timer = function(callback, delay, then) {
2231 var found = false,
2232 t0,
2233 t1 = d3_timer_queue;
2234
2235 if (arguments.length < 3) {
2236 if (arguments.length < 2) delay = 0;
2237 else if (!isFinite(delay)) return;
2238 then = Date.now();
2239 }
2240
2241 // See if the callback's already in the queue.
2242 while (t1) {
2243 if (t1.callback === callback) {
2244 t1.then = then;
2245 t1.delay = delay;
2246 found = true;
2247 break;
2248 }
2249 t0 = t1;
2250 t1 = t1.next;
2251 }
2252
2253 // Otherwise, add the callback to the queue.
2254 if (!found) d3_timer_queue = {
2255 callback: callback,
2256 then: then,
2257 delay: delay,
2258 next: d3_timer_queue
2259 };
2260
2261 // Start animatin'!
2262 if (!d3_timer_interval) {
2263 d3_timer_timeout = clearTimeout(d3_timer_timeout);
2264 d3_timer_interval = 1;
2265 d3_timer_frame(d3_timer_step);
2266 }
2267}
2268
2269function d3_timer_step() {
2270 var elapsed,
2271 now = Date.now(),
2272 t1 = d3_timer_queue;
2273
2274 while (t1) {
2275 elapsed = now - t1.then;
2276 if (elapsed >= t1.delay) t1.flush = t1.callback(elapsed);
2277 t1 = t1.next;
2278 }
2279
2280 var delay = d3_timer_flush() - now;
2281 if (delay > 24) {
2282 if (isFinite(delay)) {
2283 clearTimeout(d3_timer_timeout);
2284 d3_timer_timeout = setTimeout(d3_timer_step, delay);
2285 }
2286 d3_timer_interval = 0;
2287 } else {
2288 d3_timer_interval = 1;
2289 d3_timer_frame(d3_timer_step);
2290 }
2291}
2292
2293d3.timer.flush = function() {
2294 var elapsed,
2295 now = Date.now(),
2296 t1 = d3_timer_queue;
2297
2298 while (t1) {
2299 elapsed = now - t1.then;
2300 if (!t1.delay) t1.flush = t1.callback(elapsed);
2301 t1 = t1.next;
2302 }
2303
2304 d3_timer_flush();
2305};
2306
2307// Flush after callbacks, to avoid concurrent queue modification.
2308function d3_timer_flush() {
2309 var t0 = null,
2310 t1 = d3_timer_queue,
2311 then = Infinity;
2312 while (t1) {
2313 if (t1.flush) {
2314 t1 = t0 ? t0.next = t1.next : d3_timer_queue = t1.next;
2315 } else {
2316 then = Math.min(then, t1.then + t1.delay);
2317 t1 = (t0 = t1).next;
2318 }
2319 }
2320 return then;
2321}
2322
2323var d3_timer_frame = window.requestAnimationFrame
2324 || window.webkitRequestAnimationFrame
2325 || window.mozRequestAnimationFrame
2326 || window.oRequestAnimationFrame
2327 || window.msRequestAnimationFrame
2328 || function(callback) { setTimeout(callback, 17); };
2329d3.transform = function(string) {
2330 var g = document.createElementNS(d3.ns.prefix.svg, "g"),
2331 identity = {a: 1, b: 0, c: 0, d: 1, e: 0, f: 0};
2332 return (d3.transform = function(string) {
2333 g.setAttribute("transform", string);
2334 var t = g.transform.baseVal.consolidate();
2335 return new d3_transform(t ? t.matrix : identity);
2336 })(string);
2337};
2338
2339// Compute x-scale and normalize the first row.
2340// Compute shear and make second row orthogonal to first.
2341// Compute y-scale and normalize the second row.
2342// Finally, compute the rotation.
2343function d3_transform(m) {
2344 var r0 = [m.a, m.b],
2345 r1 = [m.c, m.d],
2346 kx = d3_transformNormalize(r0),
2347 kz = d3_transformDot(r0, r1),
2348 ky = d3_transformNormalize(d3_transformCombine(r1, r0, -kz)) || 0;
2349 if (r0[0] * r1[1] < r1[0] * r0[1]) {
2350 r0[0] *= -1;
2351 r0[1] *= -1;
2352 kx *= -1;
2353 kz *= -1;
2354 }
2355 this.rotate = (kx ? Math.atan2(r0[1], r0[0]) : Math.atan2(-r1[0], r1[1])) * d3_transformDegrees;
2356 this.translate = [m.e, m.f];
2357 this.scale = [kx, ky];
2358 this.skew = ky ? Math.atan2(kz, ky) * d3_transformDegrees : 0;
2359};
2360
2361d3_transform.prototype.toString = function() {
2362 return "translate(" + this.translate
2363 + ")rotate(" + this.rotate
2364 + ")skewX(" + this.skew
2365 + ")scale(" + this.scale
2366 + ")";
2367};
2368
2369function d3_transformDot(a, b) {
2370 return a[0] * b[0] + a[1] * b[1];
2371}
2372
2373function d3_transformNormalize(a) {
2374 var k = Math.sqrt(d3_transformDot(a, a));
2375 if (k) {
2376 a[0] /= k;
2377 a[1] /= k;
2378 }
2379 return k;
2380}
2381
2382function d3_transformCombine(a, b, k) {
2383 a[0] += k * b[0];
2384 a[1] += k * b[1];
2385 return a;
2386}
2387
2388var d3_transformDegrees = 180 / Math.PI;
2389function d3_noop() {}
2390d3.scale = {};
2391
2392function d3_scaleExtent(domain) {
2393 var start = domain[0], stop = domain[domain.length - 1];
2394 return start < stop ? [start, stop] : [stop, start];
2395}
2396
2397function d3_scaleRange(scale) {
2398 return scale.rangeExtent ? scale.rangeExtent() : d3_scaleExtent(scale.range());
2399}
2400function d3_scale_nice(domain, nice) {
2401 var i0 = 0,
2402 i1 = domain.length - 1,
2403 x0 = domain[i0],
2404 x1 = domain[i1],
2405 dx;
2406
2407 if (x1 < x0) {
2408 dx = i0; i0 = i1; i1 = dx;
2409 dx = x0; x0 = x1; x1 = dx;
2410 }
2411
2412 if (dx = x1 - x0) {
2413 nice = nice(dx);
2414 domain[i0] = nice.floor(x0);
2415 domain[i1] = nice.ceil(x1);
2416 }
2417
2418 return domain;
2419}
2420
2421function d3_scale_niceDefault() {
2422 return Math;
2423}
2424d3.scale.linear = function() {
2425 return d3_scale_linear([0, 1], [0, 1], d3.interpolate, false);
2426};
2427
2428function d3_scale_linear(domain, range, interpolate, clamp) {
2429 var output,
2430 input;
2431
2432 function rescale() {
2433 var linear = domain.length == 2 ? d3_scale_bilinear : d3_scale_polylinear,
2434 uninterpolate = clamp ? d3_uninterpolateClamp : d3_uninterpolateNumber;
2435 output = linear(domain, range, uninterpolate, interpolate);
2436 input = linear(range, domain, uninterpolate, d3.interpolate);
2437 return scale;
2438 }
2439
2440 function scale(x) {
2441 return output(x);
2442 }
2443
2444 // Note: requires range is coercible to number!
2445 scale.invert = function(y) {
2446 return input(y);
2447 };
2448
2449 scale.domain = function(x) {
2450 if (!arguments.length) return domain;
2451 domain = x.map(Number);
2452 return rescale();
2453 };
2454
2455 scale.range = function(x) {
2456 if (!arguments.length) return range;
2457 range = x;
2458 return rescale();
2459 };
2460
2461 scale.rangeRound = function(x) {
2462 return scale.range(x).interpolate(d3.interpolateRound);
2463 };
2464
2465 scale.clamp = function(x) {
2466 if (!arguments.length) return clamp;
2467 clamp = x;
2468 return rescale();
2469 };
2470
2471 scale.interpolate = function(x) {
2472 if (!arguments.length) return interpolate;
2473 interpolate = x;
2474 return rescale();
2475 };
2476
2477 scale.ticks = function(m) {
2478 return d3_scale_linearTicks(domain, m);
2479 };
2480
2481 scale.tickFormat = function(m) {
2482 return d3_scale_linearTickFormat(domain, m);
2483 };
2484
2485 scale.nice = function() {
2486 d3_scale_nice(domain, d3_scale_linearNice);
2487 return rescale();
2488 };
2489
2490 scale.copy = function() {
2491 return d3_scale_linear(domain, range, interpolate, clamp);
2492 };
2493
2494 return rescale();
2495};
2496
2497function d3_scale_linearRebind(scale, linear) {
2498 return d3.rebind(scale, linear, "range", "rangeRound", "interpolate", "clamp");
2499}
2500
2501function d3_scale_linearNice(dx) {
2502 dx = Math.pow(10, Math.round(Math.log(dx) / Math.LN10) - 1);
2503 return {
2504 floor: function(x) { return Math.floor(x / dx) * dx; },
2505 ceil: function(x) { return Math.ceil(x / dx) * dx; }
2506 };
2507}
2508
2509function d3_scale_linearTickRange(domain, m) {
2510 var extent = d3_scaleExtent(domain),
2511 span = extent[1] - extent[0],
2512 step = Math.pow(10, Math.floor(Math.log(span / m) / Math.LN10)),
2513 err = m / span * step;
2514
2515 // Filter ticks to get closer to the desired count.
2516 if (err <= .15) step *= 10;
2517 else if (err <= .35) step *= 5;
2518 else if (err <= .75) step *= 2;
2519
2520 // Round start and stop values to step interval.
2521 extent[0] = Math.ceil(extent[0] / step) * step;
2522 extent[1] = Math.floor(extent[1] / step) * step + step * .5; // inclusive
2523 extent[2] = step;
2524 return extent;
2525}
2526
2527function d3_scale_linearTicks(domain, m) {
2528 return d3.range.apply(d3, d3_scale_linearTickRange(domain, m));
2529}
2530
2531function d3_scale_linearTickFormat(domain, m) {
2532 return d3.format(",." + Math.max(0, -Math.floor(Math.log(d3_scale_linearTickRange(domain, m)[2]) / Math.LN10 + .01)) + "f");
2533}
2534function d3_scale_bilinear(domain, range, uninterpolate, interpolate) {
2535 var u = uninterpolate(domain[0], domain[1]),
2536 i = interpolate(range[0], range[1]);
2537 return function(x) {
2538 return i(u(x));
2539 };
2540}
2541function d3_scale_polylinear(domain, range, uninterpolate, interpolate) {
2542 var u = [],
2543 i = [],
2544 j = 0,
2545 k = domain.length - 1;
2546
2547 // Handle descending domains.
2548 if (domain[k] < domain[0]) {
2549 domain = domain.slice().reverse();
2550 range = range.slice().reverse();
2551 }
2552
2553 while (++j <= k) {
2554 u.push(uninterpolate(domain[j - 1], domain[j]));
2555 i.push(interpolate(range[j - 1], range[j]));
2556 }
2557
2558 return function(x) {
2559 var j = d3.bisect(domain, x, 1, k) - 1;
2560 return i[j](u[j](x));
2561 };
2562}
2563d3.scale.log = function() {
2564 return d3_scale_log(d3.scale.linear(), d3_scale_logp);
2565};
2566
2567function d3_scale_log(linear, log) {
2568 var pow = log.pow;
2569
2570 function scale(x) {
2571 return linear(log(x));
2572 }
2573
2574 scale.invert = function(x) {
2575 return pow(linear.invert(x));
2576 };
2577
2578 scale.domain = function(x) {
2579 if (!arguments.length) return linear.domain().map(pow);
2580 log = x[0] < 0 ? d3_scale_logn : d3_scale_logp;
2581 pow = log.pow;
2582 linear.domain(x.map(log));
2583 return scale;
2584 };
2585
2586 scale.nice = function() {
2587 linear.domain(d3_scale_nice(linear.domain(), d3_scale_niceDefault));
2588 return scale;
2589 };
2590
2591 scale.ticks = function() {
2592 var extent = d3_scaleExtent(linear.domain()),
2593 ticks = [];
2594 if (extent.every(isFinite)) {
2595 var i = Math.floor(extent[0]),
2596 j = Math.ceil(extent[1]),
2597 u = pow(extent[0]),
2598 v = pow(extent[1]);
2599 if (log === d3_scale_logn) {
2600 ticks.push(pow(i));
2601 for (; i++ < j;) for (var k = 9; k > 0; k--) ticks.push(pow(i) * k);
2602 } else {
2603 for (; i < j; i++) for (var k = 1; k < 10; k++) ticks.push(pow(i) * k);
2604 ticks.push(pow(i));
2605 }
2606 for (i = 0; ticks[i] < u; i++) {} // strip small values
2607 for (j = ticks.length; ticks[j - 1] > v; j--) {} // strip big values
2608 ticks = ticks.slice(i, j);
2609 }
2610 return ticks;
2611 };
2612
2613 scale.tickFormat = function(n, format) {
2614 if (arguments.length < 2) format = d3_scale_logFormat;
2615 if (arguments.length < 1) return format;
2616 var k = n / scale.ticks().length,
2617 f = log === d3_scale_logn ? (e = -1e-12, Math.floor) : (e = 1e-12, Math.ceil),
2618 e;
2619 return function(d) {
2620 return d / pow(f(log(d) + e)) < k ? format(d) : "";
2621 };
2622 };
2623
2624 scale.copy = function() {
2625 return d3_scale_log(linear.copy(), log);
2626 };
2627
2628 return d3_scale_linearRebind(scale, linear);
2629};
2630
2631var d3_scale_logFormat = d3.format(".0e");
2632
2633function d3_scale_logp(x) {
2634 return Math.log(x < 0 ? 0 : x) / Math.LN10;
2635}
2636
2637function d3_scale_logn(x) {
2638 return -Math.log(x > 0 ? 0 : -x) / Math.LN10;
2639}
2640
2641d3_scale_logp.pow = function(x) {
2642 return Math.pow(10, x);
2643};
2644
2645d3_scale_logn.pow = function(x) {
2646 return -Math.pow(10, -x);
2647};
2648d3.scale.pow = function() {
2649 return d3_scale_pow(d3.scale.linear(), 1);
2650};
2651
2652function d3_scale_pow(linear, exponent) {
2653 var powp = d3_scale_powPow(exponent),
2654 powb = d3_scale_powPow(1 / exponent);
2655
2656 function scale(x) {
2657 return linear(powp(x));
2658 }
2659
2660 scale.invert = function(x) {
2661 return powb(linear.invert(x));
2662 };
2663
2664 scale.domain = function(x) {
2665 if (!arguments.length) return linear.domain().map(powb);
2666 linear.domain(x.map(powp));
2667 return scale;
2668 };
2669
2670 scale.ticks = function(m) {
2671 return d3_scale_linearTicks(scale.domain(), m);
2672 };
2673
2674 scale.tickFormat = function(m) {
2675 return d3_scale_linearTickFormat(scale.domain(), m);
2676 };
2677
2678 scale.nice = function() {
2679 return scale.domain(d3_scale_nice(scale.domain(), d3_scale_linearNice));
2680 };
2681
2682 scale.exponent = function(x) {
2683 if (!arguments.length) return exponent;
2684 var domain = scale.domain();
2685 powp = d3_scale_powPow(exponent = x);
2686 powb = d3_scale_powPow(1 / exponent);
2687 return scale.domain(domain);
2688 };
2689
2690 scale.copy = function() {
2691 return d3_scale_pow(linear.copy(), exponent);
2692 };
2693
2694 return d3_scale_linearRebind(scale, linear);
2695};
2696
2697function d3_scale_powPow(e) {
2698 return function(x) {
2699 return x < 0 ? -Math.pow(-x, e) : Math.pow(x, e);
2700 };
2701}
2702d3.scale.sqrt = function() {
2703 return d3.scale.pow().exponent(.5);
2704};
2705d3.scale.ordinal = function() {
2706 return d3_scale_ordinal([], {t: "range", x: []});
2707};
2708
2709function d3_scale_ordinal(domain, ranger) {
2710 var index,
2711 range,
2712 rangeBand;
2713
2714 function scale(x) {
2715 return range[((index[x] || (index[x] = domain.push(x))) - 1) % range.length];
2716 }
2717
2718 function steps(start, step) {
2719 return d3.range(domain.length).map(function(i) { return start + step * i; });
2720 }
2721
2722 scale.domain = function(x) {
2723 if (!arguments.length) return domain;
2724 domain = [];
2725 index = {};
2726 var i = -1, n = x.length, xi;
2727 while (++i < n) if (!index[xi = x[i]]) index[xi] = domain.push(xi);
2728 return scale[ranger.t](ranger.x, ranger.p);
2729 };
2730
2731 scale.range = function(x) {
2732 if (!arguments.length) return range;
2733 range = x;
2734 rangeBand = 0;
2735 ranger = {t: "range", x: x};
2736 return scale;
2737 };
2738
2739 scale.rangePoints = function(x, padding) {
2740 if (arguments.length < 2) padding = 0;
2741 var start = x[0],
2742 stop = x[1],
2743 step = (stop - start) / (domain.length - 1 + padding);
2744 range = steps(domain.length < 2 ? (start + stop) / 2 : start + step * padding / 2, step);
2745 rangeBand = 0;
2746 ranger = {t: "rangePoints", x: x, p: padding};
2747 return scale;
2748 };
2749
2750 scale.rangeBands = function(x, padding) {
2751 if (arguments.length < 2) padding = 0;
2752 var start = x[0],
2753 stop = x[1],
2754 step = (stop - start) / (domain.length + padding);
2755 range = steps(start + step * padding, step);
2756 rangeBand = step * (1 - padding);
2757 ranger = {t: "rangeBands", x: x, p: padding};
2758 return scale;
2759 };
2760
2761 scale.rangeRoundBands = function(x, padding) {
2762 if (arguments.length < 2) padding = 0;
2763 var start = x[0],
2764 stop = x[1],
2765 step = Math.floor((stop - start) / (domain.length + padding));
2766 range = steps(start + Math.round((stop - start - (domain.length - padding) * step) / 2), step);
2767 rangeBand = Math.round(step * (1 - padding));
2768 ranger = {t: "rangeRoundBands", x: x, p: padding};
2769 return scale;
2770 };
2771
2772 scale.rangeBand = function() {
2773 return rangeBand;
2774 };
2775
2776 scale.rangeExtent = function() {
2777 return ranger.t === "range" ? d3_scaleExtent(ranger.x) : ranger.x;
2778 };
2779
2780 scale.copy = function() {
2781 return d3_scale_ordinal(domain, ranger);
2782 };
2783
2784 return scale.domain(domain);
2785};
2786/*
2787 * This product includes color specifications and designs developed by Cynthia
2788 * Brewer (http://colorbrewer.org/). See lib/colorbrewer for more information.
2789 */
2790
2791d3.scale.category10 = function() {
2792 return d3.scale.ordinal().range(d3_category10);
2793};
2794
2795d3.scale.category20 = function() {
2796 return d3.scale.ordinal().range(d3_category20);
2797};
2798
2799d3.scale.category20b = function() {
2800 return d3.scale.ordinal().range(d3_category20b);
2801};
2802
2803d3.scale.category20c = function() {
2804 return d3.scale.ordinal().range(d3_category20c);
2805};
2806
2807var d3_category10 = [
2808 "#1f77b4", "#ff7f0e", "#2ca02c", "#d62728", "#9467bd",
2809 "#8c564b", "#e377c2", "#7f7f7f", "#bcbd22", "#17becf"
2810];
2811
2812var d3_category20 = [
2813 "#1f77b4", "#aec7e8",
2814 "#ff7f0e", "#ffbb78",
2815 "#2ca02c", "#98df8a",
2816 "#d62728", "#ff9896",
2817 "#9467bd", "#c5b0d5",
2818 "#8c564b", "#c49c94",
2819 "#e377c2", "#f7b6d2",
2820 "#7f7f7f", "#c7c7c7",
2821 "#bcbd22", "#dbdb8d",
2822 "#17becf", "#9edae5"
2823];
2824
2825var d3_category20b = [
2826 "#393b79", "#5254a3", "#6b6ecf", "#9c9ede",
2827 "#637939", "#8ca252", "#b5cf6b", "#cedb9c",
2828 "#8c6d31", "#bd9e39", "#e7ba52", "#e7cb94",
2829 "#843c39", "#ad494a", "#d6616b", "#e7969c",
2830 "#7b4173", "#a55194", "#ce6dbd", "#de9ed6"
2831];
2832
2833var d3_category20c = [
2834 "#3182bd", "#6baed6", "#9ecae1", "#c6dbef",
2835 "#e6550d", "#fd8d3c", "#fdae6b", "#fdd0a2",
2836 "#31a354", "#74c476", "#a1d99b", "#c7e9c0",
2837 "#756bb1", "#9e9ac8", "#bcbddc", "#dadaeb",
2838 "#636363", "#969696", "#bdbdbd", "#d9d9d9"
2839];
2840d3.scale.quantile = function() {
2841 return d3_scale_quantile([], []);
2842};
2843
2844function d3_scale_quantile(domain, range) {
2845 var thresholds;
2846
2847 function rescale() {
2848 var k = 0,
2849 n = domain.length,
2850 q = range.length;
2851 thresholds = [];
2852 while (++k < q) thresholds[k - 1] = d3.quantile(domain, k / q);
2853 return scale;
2854 }
2855
2856 function scale(x) {
2857 if (isNaN(x = +x)) return NaN;
2858 return range[d3.bisect(thresholds, x)];
2859 }
2860
2861 scale.domain = function(x) {
2862 if (!arguments.length) return domain;
2863 domain = x.filter(function(d) { return !isNaN(d); }).sort(d3.ascending);
2864 return rescale();
2865 };
2866
2867 scale.range = function(x) {
2868 if (!arguments.length) return range;
2869 range = x;
2870 return rescale();
2871 };
2872
2873 scale.quantiles = function() {
2874 return thresholds;
2875 };
2876
2877 scale.copy = function() {
2878 return d3_scale_quantile(domain, range); // copy on write!
2879 };
2880
2881 return rescale();
2882};
2883d3.scale.quantize = function() {
2884 return d3_scale_quantize(0, 1, [0, 1]);
2885};
2886
2887function d3_scale_quantize(x0, x1, range) {
2888 var kx, i;
2889
2890 function scale(x) {
2891 return range[Math.max(0, Math.min(i, Math.floor(kx * (x - x0))))];
2892 }
2893
2894 function rescale() {
2895 kx = range.length / (x1 - x0);
2896 i = range.length - 1;
2897 return scale;
2898 }
2899
2900 scale.domain = function(x) {
2901 if (!arguments.length) return [x0, x1];
2902 x0 = +x[0];
2903 x1 = +x[x.length - 1];
2904 return rescale();
2905 };
2906
2907 scale.range = function(x) {
2908 if (!arguments.length) return range;
2909 range = x;
2910 return rescale();
2911 };
2912
2913 scale.copy = function() {
2914 return d3_scale_quantize(x0, x1, range); // copy on write
2915 };
2916
2917 return rescale();
2918};
2919d3.svg = {};
2920d3.svg.arc = function() {
2921 var innerRadius = d3_svg_arcInnerRadius,
2922 outerRadius = d3_svg_arcOuterRadius,
2923 startAngle = d3_svg_arcStartAngle,
2924 endAngle = d3_svg_arcEndAngle;
2925
2926 function arc() {
2927 var r0 = innerRadius.apply(this, arguments),
2928 r1 = outerRadius.apply(this, arguments),
2929 a0 = startAngle.apply(this, arguments) + d3_svg_arcOffset,
2930 a1 = endAngle.apply(this, arguments) + d3_svg_arcOffset,
2931 da = (a1 < a0 && (da = a0, a0 = a1, a1 = da), a1 - a0),
2932 df = da < Math.PI ? "0" : "1",
2933 c0 = Math.cos(a0),
2934 s0 = Math.sin(a0),
2935 c1 = Math.cos(a1),
2936 s1 = Math.sin(a1);
2937 return da >= d3_svg_arcMax
2938 ? (r0
2939 ? "M0," + r1
2940 + "A" + r1 + "," + r1 + " 0 1,1 0," + (-r1)
2941 + "A" + r1 + "," + r1 + " 0 1,1 0," + r1
2942 + "M0," + r0
2943 + "A" + r0 + "," + r0 + " 0 1,0 0," + (-r0)
2944 + "A" + r0 + "," + r0 + " 0 1,0 0," + r0
2945 + "Z"
2946 : "M0," + r1
2947 + "A" + r1 + "," + r1 + " 0 1,1 0," + (-r1)
2948 + "A" + r1 + "," + r1 + " 0 1,1 0," + r1
2949 + "Z")
2950 : (r0
2951 ? "M" + r1 * c0 + "," + r1 * s0
2952 + "A" + r1 + "," + r1 + " 0 " + df + ",1 " + r1 * c1 + "," + r1 * s1
2953 + "L" + r0 * c1 + "," + r0 * s1
2954 + "A" + r0 + "," + r0 + " 0 " + df + ",0 " + r0 * c0 + "," + r0 * s0
2955 + "Z"
2956 : "M" + r1 * c0 + "," + r1 * s0
2957 + "A" + r1 + "," + r1 + " 0 " + df + ",1 " + r1 * c1 + "," + r1 * s1
2958 + "L0,0"
2959 + "Z");
2960 }
2961
2962 arc.innerRadius = function(v) {
2963 if (!arguments.length) return innerRadius;
2964 innerRadius = d3.functor(v);
2965 return arc;
2966 };
2967
2968 arc.outerRadius = function(v) {
2969 if (!arguments.length) return outerRadius;
2970 outerRadius = d3.functor(v);
2971 return arc;
2972 };
2973
2974 arc.startAngle = function(v) {
2975 if (!arguments.length) return startAngle;
2976 startAngle = d3.functor(v);
2977 return arc;
2978 };
2979
2980 arc.endAngle = function(v) {
2981 if (!arguments.length) return endAngle;
2982 endAngle = d3.functor(v);
2983 return arc;
2984 };
2985
2986 arc.centroid = function() {
2987 var r = (innerRadius.apply(this, arguments)
2988 + outerRadius.apply(this, arguments)) / 2,
2989 a = (startAngle.apply(this, arguments)
2990 + endAngle.apply(this, arguments)) / 2 + d3_svg_arcOffset;
2991 return [Math.cos(a) * r, Math.sin(a) * r];
2992 };
2993
2994 return arc;
2995};
2996
2997var d3_svg_arcOffset = -Math.PI / 2,
2998 d3_svg_arcMax = 2 * Math.PI - 1e-6;
2999
3000function d3_svg_arcInnerRadius(d) {
3001 return d.innerRadius;
3002}
3003
3004function d3_svg_arcOuterRadius(d) {
3005 return d.outerRadius;
3006}
3007
3008function d3_svg_arcStartAngle(d) {
3009 return d.startAngle;
3010}
3011
3012function d3_svg_arcEndAngle(d) {
3013 return d.endAngle;
3014}
3015function d3_svg_line(projection) {
3016 var x = d3_svg_lineX,
3017 y = d3_svg_lineY,
3018 interpolate = "linear",
3019 interpolator = d3_svg_lineInterpolators[interpolate],
3020 tension = .7;
3021
3022 function line(d) {
3023 return d.length < 1 ? null : "M" + interpolator(projection(d3_svg_linePoints(this, d, x, y)), tension);
3024 }
3025
3026 line.x = function(v) {
3027 if (!arguments.length) return x;
3028 x = v;
3029 return line;
3030 };
3031
3032 line.y = function(v) {
3033 if (!arguments.length) return y;
3034 y = v;
3035 return line;
3036 };
3037
3038 line.interpolate = function(v) {
3039 if (!arguments.length) return interpolate;
3040 interpolator = d3_svg_lineInterpolators[interpolate = v];
3041 return line;
3042 };
3043
3044 line.tension = function(v) {
3045 if (!arguments.length) return tension;
3046 tension = v;
3047 return line;
3048 };
3049
3050 return line;
3051}
3052
3053d3.svg.line = function() {
3054 return d3_svg_line(Object);
3055};
3056
3057// Converts the specified array of data into an array of points
3058// (x-y tuples), by evaluating the specified `x` and `y` functions on each
3059// data point. The `this` context of the evaluated functions is the specified
3060// "self" object; each function is passed the current datum and index.
3061function d3_svg_linePoints(self, d, x, y) {
3062 var points = [],
3063 i = -1,
3064 n = d.length,
3065 fx = typeof x === "function",
3066 fy = typeof y === "function",
3067 value;
3068 if (fx && fy) {
3069 while (++i < n) points.push([
3070 x.call(self, value = d[i], i),
3071 y.call(self, value, i)
3072 ]);
3073 } else if (fx) {
3074 while (++i < n) points.push([x.call(self, d[i], i), y]);
3075 } else if (fy) {
3076 while (++i < n) points.push([x, y.call(self, d[i], i)]);
3077 } else {
3078 while (++i < n) points.push([x, y]);
3079 }
3080 return points;
3081}
3082
3083// The default `x` property, which references d[0].
3084function d3_svg_lineX(d) {
3085 return d[0];
3086}
3087
3088// The default `y` property, which references d[1].
3089function d3_svg_lineY(d) {
3090 return d[1];
3091}
3092
3093// The various interpolators supported by the `line` class.
3094var d3_svg_lineInterpolators = {
3095 "linear": d3_svg_lineLinear,
3096 "step-before": d3_svg_lineStepBefore,
3097 "step-after": d3_svg_lineStepAfter,
3098 "basis": d3_svg_lineBasis,
3099 "basis-open": d3_svg_lineBasisOpen,
3100 "basis-closed": d3_svg_lineBasisClosed,
3101 "bundle": d3_svg_lineBundle,
3102 "cardinal": d3_svg_lineCardinal,
3103 "cardinal-open": d3_svg_lineCardinalOpen,
3104 "cardinal-closed": d3_svg_lineCardinalClosed,
3105 "monotone": d3_svg_lineMonotone
3106};
3107
3108// Linear interpolation; generates "L" commands.
3109function d3_svg_lineLinear(points) {
3110 var i = 0,
3111 n = points.length,
3112 p = points[0],
3113 path = [p[0], ",", p[1]];
3114 while (++i < n) path.push("L", (p = points[i])[0], ",", p[1]);
3115 return path.join("");
3116}
3117
3118// Step interpolation; generates "H" and "V" commands.
3119function d3_svg_lineStepBefore(points) {
3120 var i = 0,
3121 n = points.length,
3122 p = points[0],
3123 path = [p[0], ",", p[1]];
3124 while (++i < n) path.push("V", (p = points[i])[1], "H", p[0]);
3125 return path.join("");
3126}
3127
3128// Step interpolation; generates "H" and "V" commands.
3129function d3_svg_lineStepAfter(points) {
3130 var i = 0,
3131 n = points.length,
3132 p = points[0],
3133 path = [p[0], ",", p[1]];
3134 while (++i < n) path.push("H", (p = points[i])[0], "V", p[1]);
3135 return path.join("");
3136}
3137
3138// Open cardinal spline interpolation; generates "C" commands.
3139function d3_svg_lineCardinalOpen(points, tension) {
3140 return points.length < 4
3141 ? d3_svg_lineLinear(points)
3142 : points[1] + d3_svg_lineHermite(points.slice(1, points.length - 1),
3143 d3_svg_lineCardinalTangents(points, tension));
3144}
3145
3146// Closed cardinal spline interpolation; generates "C" commands.
3147function d3_svg_lineCardinalClosed(points, tension) {
3148 return points.length < 3
3149 ? d3_svg_lineLinear(points)
3150 : points[0] + d3_svg_lineHermite((points.push(points[0]), points),
3151 d3_svg_lineCardinalTangents([points[points.length - 2]]
3152 .concat(points, [points[1]]), tension));
3153}
3154
3155// Cardinal spline interpolation; generates "C" commands.
3156function d3_svg_lineCardinal(points, tension, closed) {
3157 return points.length < 3
3158 ? d3_svg_lineLinear(points)
3159 : points[0] + d3_svg_lineHermite(points,
3160 d3_svg_lineCardinalTangents(points, tension));
3161}
3162
3163// Hermite spline construction; generates "C" commands.
3164function d3_svg_lineHermite(points, tangents) {
3165 if (tangents.length < 1
3166 || (points.length != tangents.length
3167 && points.length != tangents.length + 2)) {
3168 return d3_svg_lineLinear(points);
3169 }
3170
3171 var quad = points.length != tangents.length,
3172 path = "",
3173 p0 = points[0],
3174 p = points[1],
3175 t0 = tangents[0],
3176 t = t0,
3177 pi = 1;
3178
3179 if (quad) {
3180 path += "Q" + (p[0] - t0[0] * 2 / 3) + "," + (p[1] - t0[1] * 2 / 3)
3181 + "," + p[0] + "," + p[1];
3182 p0 = points[1];
3183 pi = 2;
3184 }
3185
3186 if (tangents.length > 1) {
3187 t = tangents[1];
3188 p = points[pi];
3189 pi++;
3190 path += "C" + (p0[0] + t0[0]) + "," + (p0[1] + t0[1])
3191 + "," + (p[0] - t[0]) + "," + (p[1] - t[1])
3192 + "," + p[0] + "," + p[1];
3193 for (var i = 2; i < tangents.length; i++, pi++) {
3194 p = points[pi];
3195 t = tangents[i];
3196 path += "S" + (p[0] - t[0]) + "," + (p[1] - t[1])
3197 + "," + p[0] + "," + p[1];
3198 }
3199 }
3200
3201 if (quad) {
3202 var lp = points[pi];
3203 path += "Q" + (p[0] + t[0] * 2 / 3) + "," + (p[1] + t[1] * 2 / 3)
3204 + "," + lp[0] + "," + lp[1];
3205 }
3206
3207 return path;
3208}
3209
3210// Generates tangents for a cardinal spline.
3211function d3_svg_lineCardinalTangents(points, tension) {
3212 var tangents = [],
3213 a = (1 - tension) / 2,
3214 p0,
3215 p1 = points[0],
3216 p2 = points[1],
3217 i = 1,
3218 n = points.length;
3219 while (++i < n) {
3220 p0 = p1;
3221 p1 = p2;
3222 p2 = points[i];
3223 tangents.push([a * (p2[0] - p0[0]), a * (p2[1] - p0[1])]);
3224 }
3225 return tangents;
3226}
3227
3228// B-spline interpolation; generates "C" commands.
3229function d3_svg_lineBasis(points) {
3230 if (points.length < 3) return d3_svg_lineLinear(points);
3231 var i = 1,
3232 n = points.length,
3233 pi = points[0],
3234 x0 = pi[0],
3235 y0 = pi[1],
3236 px = [x0, x0, x0, (pi = points[1])[0]],
3237 py = [y0, y0, y0, pi[1]],
3238 path = [x0, ",", y0];
3239 d3_svg_lineBasisBezier(path, px, py);
3240 while (++i < n) {
3241 pi = points[i];
3242 px.shift(); px.push(pi[0]);
3243 py.shift(); py.push(pi[1]);
3244 d3_svg_lineBasisBezier(path, px, py);
3245 }
3246 i = -1;
3247 while (++i < 2) {
3248 px.shift(); px.push(pi[0]);
3249 py.shift(); py.push(pi[1]);
3250 d3_svg_lineBasisBezier(path, px, py);
3251 }
3252 return path.join("");
3253}
3254
3255// Open B-spline interpolation; generates "C" commands.
3256function d3_svg_lineBasisOpen(points) {
3257 if (points.length < 4) return d3_svg_lineLinear(points);
3258 var path = [],
3259 i = -1,
3260 n = points.length,
3261 pi,
3262 px = [0],
3263 py = [0];
3264 while (++i < 3) {
3265 pi = points[i];
3266 px.push(pi[0]);
3267 py.push(pi[1]);
3268 }
3269 path.push(d3_svg_lineDot4(d3_svg_lineBasisBezier3, px)
3270 + "," + d3_svg_lineDot4(d3_svg_lineBasisBezier3, py));
3271 --i; while (++i < n) {
3272 pi = points[i];
3273 px.shift(); px.push(pi[0]);
3274 py.shift(); py.push(pi[1]);
3275 d3_svg_lineBasisBezier(path, px, py);
3276 }
3277 return path.join("");
3278}
3279
3280// Closed B-spline interpolation; generates "C" commands.
3281function d3_svg_lineBasisClosed(points) {
3282 var path,
3283 i = -1,
3284 n = points.length,
3285 m = n + 4,
3286 pi,
3287 px = [],
3288 py = [];
3289 while (++i < 4) {
3290 pi = points[i % n];
3291 px.push(pi[0]);
3292 py.push(pi[1]);
3293 }
3294 path = [
3295 d3_svg_lineDot4(d3_svg_lineBasisBezier3, px), ",",
3296 d3_svg_lineDot4(d3_svg_lineBasisBezier3, py)
3297 ];
3298 --i; while (++i < m) {
3299 pi = points[i % n];
3300 px.shift(); px.push(pi[0]);
3301 py.shift(); py.push(pi[1]);
3302 d3_svg_lineBasisBezier(path, px, py);
3303 }
3304 return path.join("");
3305}
3306
3307function d3_svg_lineBundle(points, tension) {
3308 var n = points.length - 1,
3309 x0 = points[0][0],
3310 y0 = points[0][1],
3311 dx = points[n][0] - x0,
3312 dy = points[n][1] - y0,
3313 i = -1,
3314 p,
3315 t;
3316 while (++i <= n) {
3317 p = points[i];
3318 t = i / n;
3319 p[0] = tension * p[0] + (1 - tension) * (x0 + t * dx);
3320 p[1] = tension * p[1] + (1 - tension) * (y0 + t * dy);
3321 }
3322 return d3_svg_lineBasis(points);
3323}
3324
3325// Returns the dot product of the given four-element vectors.
3326function d3_svg_lineDot4(a, b) {
3327 return a[0] * b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3];
3328}
3329
3330// Matrix to transform basis (b-spline) control points to bezier
3331// control points. Derived from FvD 11.2.8.
3332var d3_svg_lineBasisBezier1 = [0, 2/3, 1/3, 0],
3333 d3_svg_lineBasisBezier2 = [0, 1/3, 2/3, 0],
3334 d3_svg_lineBasisBezier3 = [0, 1/6, 2/3, 1/6];
3335
3336// Pushes a "C" Bézier curve onto the specified path array, given the
3337// two specified four-element arrays which define the control points.
3338function d3_svg_lineBasisBezier(path, x, y) {
3339 path.push(
3340 "C", d3_svg_lineDot4(d3_svg_lineBasisBezier1, x),
3341 ",", d3_svg_lineDot4(d3_svg_lineBasisBezier1, y),
3342 ",", d3_svg_lineDot4(d3_svg_lineBasisBezier2, x),
3343 ",", d3_svg_lineDot4(d3_svg_lineBasisBezier2, y),
3344 ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, x),
3345 ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, y));
3346}
3347
3348// Computes the slope from points p0 to p1.
3349function d3_svg_lineSlope(p0, p1) {
3350 return (p1[1] - p0[1]) / (p1[0] - p0[0]);
3351}
3352
3353// Compute three-point differences for the given points.
3354// http://en.wikipedia.org/wiki/Cubic_Hermite_spline#Finite_difference
3355function d3_svg_lineFiniteDifferences(points) {
3356 var i = 0,
3357 j = points.length - 1,
3358 m = [],
3359 p0 = points[0],
3360 p1 = points[1],
3361 d = m[0] = d3_svg_lineSlope(p0, p1);
3362 while (++i < j) {
3363 m[i] = d + (d = d3_svg_lineSlope(p0 = p1, p1 = points[i + 1]));
3364 }
3365 m[i] = d;
3366 return m;
3367}
3368
3369// Interpolates the given points using Fritsch-Carlson Monotone cubic Hermite
3370// interpolation. Returns an array of tangent vectors. For details, see
3371// http://en.wikipedia.org/wiki/Monotone_cubic_interpolation
3372function d3_svg_lineMonotoneTangents(points) {
3373 var tangents = [],
3374 d,
3375 a,
3376 b,
3377 s,
3378 m = d3_svg_lineFiniteDifferences(points),
3379 i = -1,
3380 j = points.length - 1;
3381
3382 // The first two steps are done by computing finite-differences:
3383 // 1. Compute the slopes of the secant lines between successive points.
3384 // 2. Initialize the tangents at every point as the average of the secants.
3385
3386 // Then, for each segment…
3387 while (++i < j) {
3388 d = d3_svg_lineSlope(points[i], points[i + 1]);
3389
3390 // 3. If two successive yk = y{k + 1} are equal (i.e., d is zero), then set
3391 // mk = m{k + 1} = 0 as the spline connecting these points must be flat to
3392 // preserve monotonicity. Ignore step 4 and 5 for those k.
3393
3394 if (Math.abs(d) < 1e-6) {
3395 m[i] = m[i + 1] = 0;
3396 } else {
3397 // 4. Let ak = mk / dk and bk = m{k + 1} / dk.
3398 a = m[i] / d;
3399 b = m[i + 1] / d;
3400
3401 // 5. Prevent overshoot and ensure monotonicity by restricting the
3402 // magnitude of vector <ak, bk> to a circle of radius 3.
3403 s = a * a + b * b;
3404 if (s > 9) {
3405 s = d * 3 / Math.sqrt(s);
3406 m[i] = s * a;
3407 m[i + 1] = s * b;
3408 }
3409 }
3410 }
3411
3412 // Compute the normalized tangent vector from the slopes. Note that if x is
3413 // not monotonic, it's possible that the slope will be infinite, so we protect
3414 // against NaN by setting the coordinate to zero.
3415 i = -1; while (++i <= j) {
3416 s = (points[Math.min(j, i + 1)][0] - points[Math.max(0, i - 1)][0])
3417 / (6 * (1 + m[i] * m[i]));
3418 tangents.push([s || 0, m[i] * s || 0]);
3419 }
3420
3421 return tangents;
3422}
3423
3424function d3_svg_lineMonotone(points) {
3425 return points.length < 3
3426 ? d3_svg_lineLinear(points)
3427 : points[0] +
3428 d3_svg_lineHermite(points, d3_svg_lineMonotoneTangents(points));
3429}
3430d3.svg.line.radial = function() {
3431 var line = d3_svg_line(d3_svg_lineRadial);
3432 line.radius = line.x, delete line.x;
3433 line.angle = line.y, delete line.y;
3434 return line;
3435};
3436
3437function d3_svg_lineRadial(points) {
3438 var point,
3439 i = -1,
3440 n = points.length,
3441 r,
3442 a;
3443 while (++i < n) {
3444 point = points[i];
3445 r = point[0];
3446 a = point[1] + d3_svg_arcOffset;
3447 point[0] = r * Math.cos(a);
3448 point[1] = r * Math.sin(a);
3449 }
3450 return points;
3451}
3452function d3_svg_area(projection) {
3453 var x0 = d3_svg_lineX,
3454 x1 = d3_svg_lineX,
3455 y0 = 0,
3456 y1 = d3_svg_lineY,
3457 interpolate,
3458 i0,
3459 i1,
3460 tension = .7;
3461
3462 function area(d) {
3463 if (d.length < 1) return null;
3464 var points0 = d3_svg_linePoints(this, d, x0, y0),
3465 points1 = d3_svg_linePoints(this, d, x0 === x1 ? d3_svg_areaX(points0) : x1, y0 === y1 ? d3_svg_areaY(points0) : y1);
3466 return "M" + i0(projection(points1), tension)
3467 + "L" + i1(projection(points0.reverse()), tension)
3468 + "Z";
3469 }
3470
3471 area.x = function(x) {
3472 if (!arguments.length) return x1;
3473 x0 = x1 = x;
3474 return area;
3475 };
3476
3477 area.x0 = function(x) {
3478 if (!arguments.length) return x0;
3479 x0 = x;
3480 return area;
3481 };
3482
3483 area.x1 = function(x) {
3484 if (!arguments.length) return x1;
3485 x1 = x;
3486 return area;
3487 };
3488
3489 area.y = function(y) {
3490 if (!arguments.length) return y1;
3491 y0 = y1 = y;
3492 return area;
3493 };
3494
3495 area.y0 = function(y) {
3496 if (!arguments.length) return y0;
3497 y0 = y;
3498 return area;
3499 };
3500
3501 area.y1 = function(y) {
3502 if (!arguments.length) return y1;
3503 y1 = y;
3504 return area;
3505 };
3506
3507 area.interpolate = function(x) {
3508 if (!arguments.length) return interpolate;
3509 i0 = d3_svg_lineInterpolators[interpolate = x];
3510 i1 = i0.reverse || i0;
3511 return area;
3512 };
3513
3514 area.tension = function(x) {
3515 if (!arguments.length) return tension;
3516 tension = x;
3517 return area;
3518 };
3519
3520 return area.interpolate("linear");
3521}
3522
3523d3_svg_lineStepBefore.reverse = d3_svg_lineStepAfter;
3524d3_svg_lineStepAfter.reverse = d3_svg_lineStepBefore;
3525
3526d3.svg.area = function() {
3527 return d3_svg_area(Object);
3528};
3529
3530function d3_svg_areaX(points) {
3531 return function(d, i) {
3532 return points[i][0];
3533 };
3534}
3535
3536function d3_svg_areaY(points) {
3537 return function(d, i) {
3538 return points[i][1];
3539 };
3540}
3541d3.svg.area.radial = function() {
3542 var area = d3_svg_area(d3_svg_lineRadial);
3543 area.radius = area.x, delete area.x;
3544 area.innerRadius = area.x0, delete area.x0;
3545 area.outerRadius = area.x1, delete area.x1;
3546 area.angle = area.y, delete area.y;
3547 area.startAngle = area.y0, delete area.y0;
3548 area.endAngle = area.y1, delete area.y1;
3549 return area;
3550};
3551d3.svg.chord = function() {
3552 var source = d3_svg_chordSource,
3553 target = d3_svg_chordTarget,
3554 radius = d3_svg_chordRadius,
3555 startAngle = d3_svg_arcStartAngle,
3556 endAngle = d3_svg_arcEndAngle;
3557
3558 // TODO Allow control point to be customized.
3559
3560 function chord(d, i) {
3561 var s = subgroup(this, source, d, i),
3562 t = subgroup(this, target, d, i);
3563 return "M" + s.p0
3564 + arc(s.r, s.p1, s.a1 - s.a0) + (equals(s, t)
3565 ? curve(s.r, s.p1, s.r, s.p0)
3566 : curve(s.r, s.p1, t.r, t.p0)
3567 + arc(t.r, t.p1, t.a1 - t.a0)
3568 + curve(t.r, t.p1, s.r, s.p0))
3569 + "Z";
3570 }
3571
3572 function subgroup(self, f, d, i) {
3573 var subgroup = f.call(self, d, i),
3574 r = radius.call(self, subgroup, i),
3575 a0 = startAngle.call(self, subgroup, i) + d3_svg_arcOffset,
3576 a1 = endAngle.call(self, subgroup, i) + d3_svg_arcOffset;
3577 return {
3578 r: r,
3579 a0: a0,
3580 a1: a1,
3581 p0: [r * Math.cos(a0), r * Math.sin(a0)],
3582 p1: [r * Math.cos(a1), r * Math.sin(a1)]
3583 };
3584 }
3585
3586 function equals(a, b) {
3587 return a.a0 == b.a0 && a.a1 == b.a1;
3588 }
3589
3590 function arc(r, p, a) {
3591 return "A" + r + "," + r + " 0 " + +(a > Math.PI) + ",1 " + p;
3592 }
3593
3594 function curve(r0, p0, r1, p1) {
3595 return "Q 0,0 " + p1;
3596 }
3597
3598 chord.radius = function(v) {
3599 if (!arguments.length) return radius;
3600 radius = d3.functor(v);
3601 return chord;
3602 };
3603
3604 chord.source = function(v) {
3605 if (!arguments.length) return source;
3606 source = d3.functor(v);
3607 return chord;
3608 };
3609
3610 chord.target = function(v) {
3611 if (!arguments.length) return target;
3612 target = d3.functor(v);
3613 return chord;
3614 };
3615
3616 chord.startAngle = function(v) {
3617 if (!arguments.length) return startAngle;
3618 startAngle = d3.functor(v);
3619 return chord;
3620 };
3621
3622 chord.endAngle = function(v) {
3623 if (!arguments.length) return endAngle;
3624 endAngle = d3.functor(v);
3625 return chord;
3626 };
3627
3628 return chord;
3629};
3630
3631function d3_svg_chordSource(d) {
3632 return d.source;
3633}
3634
3635function d3_svg_chordTarget(d) {
3636 return d.target;
3637}
3638
3639function d3_svg_chordRadius(d) {
3640 return d.radius;
3641}
3642
3643function d3_svg_chordStartAngle(d) {
3644 return d.startAngle;
3645}
3646
3647function d3_svg_chordEndAngle(d) {
3648 return d.endAngle;
3649}
3650d3.svg.diagonal = function() {
3651 var source = d3_svg_chordSource,
3652 target = d3_svg_chordTarget,
3653 projection = d3_svg_diagonalProjection;
3654
3655 function diagonal(d, i) {
3656 var p0 = source.call(this, d, i),
3657 p3 = target.call(this, d, i),
3658 m = (p0.y + p3.y) / 2,
3659 p = [p0, {x: p0.x, y: m}, {x: p3.x, y: m}, p3];
3660 p = p.map(projection);
3661 return "M" + p[0] + "C" + p[1] + " " + p[2] + " " + p[3];
3662 }
3663
3664 diagonal.source = function(x) {
3665 if (!arguments.length) return source;
3666 source = d3.functor(x);
3667 return diagonal;
3668 };
3669
3670 diagonal.target = function(x) {
3671 if (!arguments.length) return target;
3672 target = d3.functor(x);
3673 return diagonal;
3674 };
3675
3676 diagonal.projection = function(x) {
3677 if (!arguments.length) return projection;
3678 projection = x;
3679 return diagonal;
3680 };
3681
3682 return diagonal;
3683};
3684
3685function d3_svg_diagonalProjection(d) {
3686 return [d.x, d.y];
3687}
3688d3.svg.diagonal.radial = function() {
3689 var diagonal = d3.svg.diagonal(),
3690 projection = d3_svg_diagonalProjection,
3691 projection_ = diagonal.projection;
3692
3693 diagonal.projection = function(x) {
3694 return arguments.length
3695 ? projection_(d3_svg_diagonalRadialProjection(projection = x))
3696 : projection;
3697 };
3698
3699 return diagonal;
3700};
3701
3702function d3_svg_diagonalRadialProjection(projection) {
3703 return function() {
3704 var d = projection.apply(this, arguments),
3705 r = d[0],
3706 a = d[1] + d3_svg_arcOffset;
3707 return [r * Math.cos(a), r * Math.sin(a)];
3708 };
3709}
3710d3.svg.mouse = function(container) {
3711 return d3_svg_mousePoint(container, d3.event);
3712};
3713
3714// https://bugs.webkit.org/show_bug.cgi?id=44083
3715var d3_mouse_bug44083 = /WebKit/.test(navigator.userAgent) ? -1 : 0;
3716
3717function d3_svg_mousePoint(container, e) {
3718 var point = (container.ownerSVGElement || container).createSVGPoint();
3719 if ((d3_mouse_bug44083 < 0) && (window.scrollX || window.scrollY)) {
3720 var svg = d3.select(document.body)
3721 .append("svg")
3722 .style("position", "absolute")
3723 .style("top", 0)
3724 .style("left", 0);
3725 var ctm = svg[0][0].getScreenCTM();
3726 d3_mouse_bug44083 = !(ctm.f || ctm.e);
3727 svg.remove();
3728 }
3729 if (d3_mouse_bug44083) {
3730 point.x = e.pageX;
3731 point.y = e.pageY;
3732 } else {
3733 point.x = e.clientX;
3734 point.y = e.clientY;
3735 }
3736 point = point.matrixTransform(container.getScreenCTM().inverse());
3737 return [point.x, point.y];
3738};
3739d3.svg.touches = function(container, touches) {
3740 if (arguments.length < 2) touches = d3.event.touches;
3741
3742 return touches ? d3_array(touches).map(function(touch) {
3743 var point = d3_svg_mousePoint(container, touch);
3744 point.identifier = touch.identifier;
3745 return point;
3746 }) : [];
3747};
3748d3.svg.symbol = function() {
3749 var type = d3_svg_symbolType,
3750 size = d3_svg_symbolSize;
3751
3752 function symbol(d, i) {
3753 return (d3_svg_symbols[type.call(this, d, i)]
3754 || d3_svg_symbols.circle)
3755 (size.call(this, d, i));
3756 }
3757
3758 symbol.type = function(x) {
3759 if (!arguments.length) return type;
3760 type = d3.functor(x);
3761 return symbol;
3762 };
3763
3764 // size of symbol in square pixels
3765 symbol.size = function(x) {
3766 if (!arguments.length) return size;
3767 size = d3.functor(x);
3768 return symbol;
3769 };
3770
3771 return symbol;
3772};
3773
3774function d3_svg_symbolSize() {
3775 return 64;
3776}
3777
3778function d3_svg_symbolType() {
3779 return "circle";
3780}
3781
3782// TODO cross-diagonal?
3783var d3_svg_symbols = {
3784 "circle": function(size) {
3785 var r = Math.sqrt(size / Math.PI);
3786 return "M0," + r
3787 + "A" + r + "," + r + " 0 1,1 0," + (-r)
3788 + "A" + r + "," + r + " 0 1,1 0," + r
3789 + "Z";
3790 },
3791 "cross": function(size) {
3792 var r = Math.sqrt(size / 5) / 2;
3793 return "M" + -3 * r + "," + -r
3794 + "H" + -r
3795 + "V" + -3 * r
3796 + "H" + r
3797 + "V" + -r
3798 + "H" + 3 * r
3799 + "V" + r
3800 + "H" + r
3801 + "V" + 3 * r
3802 + "H" + -r
3803 + "V" + r
3804 + "H" + -3 * r
3805 + "Z";
3806 },
3807 "diamond": function(size) {
3808 var ry = Math.sqrt(size / (2 * d3_svg_symbolTan30)),
3809 rx = ry * d3_svg_symbolTan30;
3810 return "M0," + -ry
3811 + "L" + rx + ",0"
3812 + " 0," + ry
3813 + " " + -rx + ",0"
3814 + "Z";
3815 },
3816 "square": function(size) {
3817 var r = Math.sqrt(size) / 2;
3818 return "M" + -r + "," + -r
3819 + "L" + r + "," + -r
3820 + " " + r + "," + r
3821 + " " + -r + "," + r
3822 + "Z";
3823 },
3824 "triangle-down": function(size) {
3825 var rx = Math.sqrt(size / d3_svg_symbolSqrt3),
3826 ry = rx * d3_svg_symbolSqrt3 / 2;
3827 return "M0," + ry
3828 + "L" + rx +"," + -ry
3829 + " " + -rx + "," + -ry
3830 + "Z";
3831 },
3832 "triangle-up": function(size) {
3833 var rx = Math.sqrt(size / d3_svg_symbolSqrt3),
3834 ry = rx * d3_svg_symbolSqrt3 / 2;
3835 return "M0," + -ry
3836 + "L" + rx +"," + ry
3837 + " " + -rx + "," + ry
3838 + "Z";
3839 }
3840};
3841
3842d3.svg.symbolTypes = d3.keys(d3_svg_symbols);
3843
3844var d3_svg_symbolSqrt3 = Math.sqrt(3),
3845 d3_svg_symbolTan30 = Math.tan(30 * Math.PI / 180);
3846d3.svg.axis = function() {
3847 var scale = d3.scale.linear(),
3848 orient = "bottom",
3849 tickMajorSize = 6,
3850 tickMinorSize = 6,
3851 tickEndSize = 6,
3852 tickPadding = 3,
3853 tickArguments_ = [10],
3854 tickFormat_,
3855 tickSubdivide = 0;
3856
3857 function axis(selection) {
3858 selection.each(function(d, i, j) {
3859 var g = d3.select(this);
3860
3861 // If selection is a transition, create subtransitions.
3862 var transition = selection.delay ? function(o) {
3863 var id = d3_transitionInheritId;
3864 try {
3865 d3_transitionInheritId = selection.id;
3866 return o.transition()
3867 .delay(selection[j][i].delay)
3868 .duration(selection[j][i].duration)
3869 .ease(selection.ease());
3870 } finally {
3871 d3_transitionInheritId = id;
3872 }
3873 } : Object;
3874
3875 // Ticks, or domain values for ordinal scales.
3876 var ticks = scale.ticks ? scale.ticks.apply(scale, tickArguments_) : scale.domain(),
3877 tickFormat = tickFormat_ == null ? (scale.tickFormat ? scale.tickFormat.apply(scale, tickArguments_) : String) : tickFormat_;
3878
3879 // Minor ticks.
3880 var subticks = d3_svg_axisSubdivide(scale, ticks, tickSubdivide),
3881 subtick = g.selectAll(".minor").data(subticks, String),
3882 subtickEnter = subtick.enter().insert("line", "g").attr("class", "tick minor").style("opacity", 1e-6),
3883 subtickExit = transition(subtick.exit()).style("opacity", 1e-6).remove(),
3884 subtickUpdate = transition(subtick).style("opacity", 1);
3885
3886 // Major ticks.
3887 var tick = g.selectAll("g").data(ticks, String),
3888 tickEnter = tick.enter().insert("g", "path").style("opacity", 1e-6),
3889 tickExit = transition(tick.exit()).style("opacity", 1e-6).remove(),
3890 tickUpdate = transition(tick).style("opacity", 1),
3891 tickTransform;
3892
3893 // Domain.
3894 var range = d3_scaleRange(scale),
3895 path = g.selectAll(".domain").data([0]),
3896 pathEnter = path.enter().append("path").attr("class", "domain"),
3897 pathUpdate = transition(path);
3898
3899 // Stash a snapshot of the new scale, and retrieve the old snapshot.
3900 var scale1 = scale.copy(),
3901 scale0 = this.__chart__ || scale1;
3902 this.__chart__ = scale1;
3903
3904 tickEnter.append("line").attr("class", "tick");
3905 tickEnter.append("text");
3906 tickUpdate.select("text").text(tickFormat);
3907
3908 switch (orient) {
3909 case "bottom": {
3910 tickTransform = d3_svg_axisX;
3911 subtickEnter.attr("y2", tickMinorSize);
3912 subtickUpdate.attr("x2", 0).attr("y2", tickMinorSize);
3913 tickEnter.select("line").attr("y2", tickMajorSize);
3914 tickEnter.select("text").attr("y", Math.max(tickMajorSize, 0) + tickPadding);
3915 tickUpdate.select("line").attr("x2", 0).attr("y2", tickMajorSize);
3916 tickUpdate.select("text").attr("x", 0).attr("y", Math.max(tickMajorSize, 0) + tickPadding).attr("dy", ".71em").attr("text-anchor", "middle");
3917 pathUpdate.attr("d", "M" + range[0] + "," + tickEndSize + "V0H" + range[1] + "V" + tickEndSize);
3918 break;
3919 }
3920 case "top": {
3921 tickTransform = d3_svg_axisX;
3922 subtickEnter.attr("y2", -tickMinorSize);
3923 subtickUpdate.attr("x2", 0).attr("y2", -tickMinorSize);
3924 tickEnter.select("line").attr("y2", -tickMajorSize);
3925 tickEnter.select("text").attr("y", -(Math.max(tickMajorSize, 0) + tickPadding));
3926 tickUpdate.select("line").attr("x2", 0).attr("y2", -tickMajorSize);
3927 tickUpdate.select("text").attr("x", 0).attr("y", -(Math.max(tickMajorSize, 0) + tickPadding)).attr("dy", "0em").attr("text-anchor", "middle");
3928 pathUpdate.attr("d", "M" + range[0] + "," + -tickEndSize + "V0H" + range[1] + "V" + -tickEndSize);
3929 break;
3930 }
3931 case "left": {
3932 tickTransform = d3_svg_axisY;
3933 subtickEnter.attr("x2", -tickMinorSize);
3934 subtickUpdate.attr("x2", -tickMinorSize).attr("y2", 0);
3935 tickEnter.select("line").attr("x2", -tickMajorSize);
3936 tickEnter.select("text").attr("x", -(Math.max(tickMajorSize, 0) + tickPadding));
3937 tickUpdate.select("line").attr("x2", -tickMajorSize).attr("y2", 0);
3938 tickUpdate.select("text").attr("x", -(Math.max(tickMajorSize, 0) + tickPadding)).attr("y", 0).attr("dy", ".32em").attr("text-anchor", "end");
3939 pathUpdate.attr("d", "M" + -tickEndSize + "," + range[0] + "H0V" + range[1] + "H" + -tickEndSize);
3940 break;
3941 }
3942 case "right": {
3943 tickTransform = d3_svg_axisY;
3944 subtickEnter.attr("x2", tickMinorSize);
3945 subtickUpdate.attr("x2", tickMinorSize).attr("y2", 0);
3946 tickEnter.select("line").attr("x2", tickMajorSize);
3947 tickEnter.select("text").attr("x", Math.max(tickMajorSize, 0) + tickPadding);
3948 tickUpdate.select("line").attr("x2", tickMajorSize).attr("y2", 0);
3949 tickUpdate.select("text").attr("x", Math.max(tickMajorSize, 0) + tickPadding).attr("y", 0).attr("dy", ".32em").attr("text-anchor", "start");
3950 pathUpdate.attr("d", "M" + tickEndSize + "," + range[0] + "H0V" + range[1] + "H" + tickEndSize);
3951 break;
3952 }
3953 }
3954
3955 // For quantitative scales:
3956 // - enter new ticks from the old scale
3957 // - exit old ticks to the new scale
3958 if (scale.ticks) {
3959 tickEnter.call(tickTransform, scale0);
3960 tickUpdate.call(tickTransform, scale1);
3961 tickExit.call(tickTransform, scale1);
3962 subtickEnter.call(tickTransform, scale0);
3963 subtickUpdate.call(tickTransform, scale1);
3964 subtickExit.call(tickTransform, scale1);
3965 }
3966
3967 // For ordinal scales:
3968 // - any entering ticks are undefined in the old scale
3969 // - any exiting ticks are undefined in the new scale
3970 // Therefore, we only need to transition updating ticks.
3971 else {
3972 var dx = scale1.rangeBand() / 2, x = function(d) { return scale1(d) + dx; };
3973 tickEnter.call(tickTransform, x);
3974 tickUpdate.call(tickTransform, x);
3975 }
3976 });
3977 }
3978
3979 axis.scale = function(x) {
3980 if (!arguments.length) return scale;
3981 scale = x;
3982 return axis;
3983 };
3984
3985 axis.orient = function(x) {
3986 if (!arguments.length) return orient;
3987 orient = x;
3988 return axis;
3989 };
3990
3991 axis.ticks = function() {
3992 if (!arguments.length) return tickArguments_;
3993 tickArguments_ = arguments;
3994 return axis;
3995 };
3996
3997 axis.tickFormat = function(x) {
3998 if (!arguments.length) return tickFormat_;
3999 tickFormat_ = x;
4000 return axis;
4001 };
4002
4003 axis.tickSize = function(x, y, z) {
4004 if (!arguments.length) return tickMajorSize;
4005 var n = arguments.length - 1;
4006 tickMajorSize = +x;
4007 tickMinorSize = n > 1 ? +y : tickMajorSize;
4008 tickEndSize = n > 0 ? +arguments[n] : tickMajorSize;
4009 return axis;
4010 };
4011
4012 axis.tickPadding = function(x) {
4013 if (!arguments.length) return tickPadding;
4014 tickPadding = +x;
4015 return axis;
4016 };
4017
4018 axis.tickSubdivide = function(x) {
4019 if (!arguments.length) return tickSubdivide;
4020 tickSubdivide = +x;
4021 return axis;
4022 };
4023
4024 return axis;
4025};
4026
4027function d3_svg_axisX(selection, x) {
4028 selection.attr("transform", function(d) { return "translate(" + x(d) + ",0)"; });
4029}
4030
4031function d3_svg_axisY(selection, y) {
4032 selection.attr("transform", function(d) { return "translate(0," + y(d) + ")"; });
4033}
4034
4035function d3_svg_axisSubdivide(scale, ticks, m) {
4036 subticks = [];
4037 if (m && ticks.length > 1) {
4038 var extent = d3_scaleExtent(scale.domain()),
4039 subticks,
4040 i = -1,
4041 n = ticks.length,
4042 d = (ticks[1] - ticks[0]) / ++m,
4043 j,
4044 v;
4045 while (++i < n) {
4046 for (j = m; --j > 0;) {
4047 if ((v = +ticks[i] - j * d) >= extent[0]) {
4048 subticks.push(v);
4049 }
4050 }
4051 }
4052 for (--i, j = 0; ++j < m && (v = +ticks[i] + j * d) < extent[1];) {
4053 subticks.push(v);
4054 }
4055 }
4056 return subticks;
4057}
4058d3.svg.brush = function() {
4059 var event = d3.dispatch("brushstart", "brush", "brushend"),
4060 x, // x-scale, optional
4061 y, // y-scale, optional
4062 extent = [[0, 0], [0, 0]]; // [x0, y0], [x1, y1]
4063
4064 function brush(g) {
4065 var resizes = x && y ? ["n", "e", "s", "w", "nw", "ne", "se", "sw"]
4066 : x ? ["e", "w"]
4067 : y ? ["n", "s"]
4068 : [];
4069
4070 g.each(function() {
4071 var g = d3.select(this).on("mousedown.brush", down),
4072 bg = g.selectAll(".background").data([0]),
4073 fg = g.selectAll(".extent").data([0]),
4074 tz = g.selectAll(".resize").data(resizes, String),
4075 e;
4076
4077 // An invisible, mouseable area for starting a new brush.
4078 bg.enter().append("rect")
4079 .attr("class", "background")
4080 .style("visibility", "hidden")
4081 .style("pointer-events", "all")
4082 .style("cursor", "crosshair");
4083
4084 // The visible brush extent; style this as you like!
4085 fg.enter().append("rect")
4086 .attr("class", "extent")
4087 .style("cursor", "move");
4088
4089 // More invisible rects for resizing the extent.
4090 tz.enter().append("rect")
4091 .attr("class", function(d) { return "resize " + d; })
4092 .attr("width", 6)
4093 .attr("height", 6)
4094 .style("visibility", "hidden")
4095 .style("cursor", function(d) { return d3_svg_brushCursor[d]; });
4096
4097 // Update the resizers.
4098 tz.style("pointer-events", brush.empty() ? "none" : "all");
4099
4100 // Remove any superfluous resizers.
4101 tz.exit().remove();
4102
4103 // Initialize the background to fill the defined range.
4104 // If the range isn't defined, you can post-process.
4105 if (x) {
4106 e = d3_scaleRange(x);
4107 bg.attr("x", e[0]).attr("width", e[1] - e[0]);
4108 d3_svg_brushRedrawX(g, extent);
4109 }
4110 if (y) {
4111 e = d3_scaleRange(y);
4112 bg.attr("y", e[0]).attr("height", e[1] - e[0]);
4113 d3_svg_brushRedrawY(g, extent);
4114 }
4115 });
4116 }
4117
4118 function down() {
4119 var target = d3.select(d3.event.target);
4120
4121 // Store some global state for the duration of the brush gesture.
4122 d3_svg_brush = brush;
4123 d3_svg_brushTarget = this;
4124 d3_svg_brushExtent = extent;
4125 d3_svg_brushOffset = d3.svg.mouse(d3_svg_brushTarget);
4126
4127 // If the extent was clicked on, drag rather than brush;
4128 // store the offset between the mouse and extent origin instead.
4129 if (d3_svg_brushDrag = target.classed("extent")) {
4130 d3_svg_brushOffset[0] = extent[0][0] - d3_svg_brushOffset[0];
4131 d3_svg_brushOffset[1] = extent[0][1] - d3_svg_brushOffset[1];
4132 }
4133
4134 // If a resizer was clicked on, record which side is to be resized.
4135 // Also, set the offset to the opposite side.
4136 else if (target.classed("resize")) {
4137 d3_svg_brushResize = d3.event.target.__data__;
4138 d3_svg_brushOffset[0] = extent[+/w$/.test(d3_svg_brushResize)][0];
4139 d3_svg_brushOffset[1] = extent[+/^n/.test(d3_svg_brushResize)][1];
4140 }
4141
4142 // If the ALT key is down when starting a brush, the center is at the mouse.
4143 else if (d3.event.altKey) {
4144 d3_svg_brushCenter = d3_svg_brushOffset.slice();
4145 }
4146
4147 // Restrict which dimensions are resized.
4148 d3_svg_brushX = !/^(n|s)$/.test(d3_svg_brushResize) && x;
4149 d3_svg_brushY = !/^(e|w)$/.test(d3_svg_brushResize) && y;
4150
4151 // Notify listeners.
4152 d3_svg_brushDispatch = dispatcher(this, arguments);
4153 d3_svg_brushDispatch("brushstart");
4154 d3_svg_brushMove();
4155 d3_eventCancel();
4156 }
4157
4158 function dispatcher(that, argumentz) {
4159 return function(type) {
4160 var e = d3.event;
4161 try {
4162 d3.event = {type: type, target: brush};
4163 event[type].apply(that, argumentz);
4164 } finally {
4165 d3.event = e;
4166 }
4167 };
4168 }
4169
4170 brush.x = function(z) {
4171 if (!arguments.length) return x;
4172 x = z;
4173 return brush;
4174 };
4175
4176 brush.y = function(z) {
4177 if (!arguments.length) return y;
4178 y = z;
4179 return brush;
4180 };
4181
4182 brush.extent = function(z) {
4183 var x0, x1, y0, y1, t;
4184
4185 // Invert the pixel extent to data-space.
4186 if (!arguments.length) {
4187 if (x) {
4188 x0 = extent[0][0], x1 = extent[1][0];
4189 if (x.invert) x0 = x.invert(x0), x1 = x.invert(x1);
4190 if (x1 < x0) t = x0, x0 = x1, x1 = t;
4191 }
4192 if (y) {
4193 y0 = extent[0][1], y1 = extent[1][1];
4194 if (y.invert) y0 = y.invert(y0), y1 = y.invert(y1);
4195 if (y1 < y0) t = y0, y0 = y1, y1 = t;
4196 }
4197 return x && y ? [[x0, y0], [x1, y1]] : x ? [x0, x1] : y && [y0, y1];
4198 }
4199
4200 // Scale the data-space extent to pixels.
4201 if (x) {
4202 x0 = z[0], x1 = z[1];
4203 if (y) x0 = x0[0], x1 = x1[0];
4204 if (x.invert) x0 = x(x0), x1 = x(x1);
4205 if (x1 < x0) t = x0, x0 = x1, x1 = t;
4206 extent[0][0] = x0, extent[1][0] = x1;
4207 }
4208 if (y) {
4209 y0 = z[0], y1 = z[1];
4210 if (x) y0 = y0[1], y1 = y1[1];
4211 if (y.invert) y0 = y(y0), y1 = y(y1);
4212 if (y1 < y0) t = y0, y0 = y1, y1 = t;
4213 extent[0][1] = y0, extent[1][1] = y1;
4214 }
4215
4216 return brush;
4217 };
4218
4219 brush.clear = function() {
4220 extent[0][0] =
4221 extent[0][1] =
4222 extent[1][0] =
4223 extent[1][1] = 0;
4224 return brush;
4225 };
4226
4227 brush.empty = function() {
4228 return (x && extent[0][0] === extent[1][0])
4229 || (y && extent[0][1] === extent[1][1]);
4230 };
4231
4232 d3.select(window)
4233 .on("mousemove.brush", d3_svg_brushMove)
4234 .on("mouseup.brush", d3_svg_brushUp)
4235 .on("keydown.brush", d3_svg_brushKeydown)
4236 .on("keyup.brush", d3_svg_brushKeyup);
4237
4238 return d3.rebind(brush, event, "on");
4239};
4240
4241var d3_svg_brush,
4242 d3_svg_brushDispatch,
4243 d3_svg_brushTarget,
4244 d3_svg_brushX,
4245 d3_svg_brushY,
4246 d3_svg_brushExtent,
4247 d3_svg_brushDrag,
4248 d3_svg_brushResize,
4249 d3_svg_brushCenter,
4250 d3_svg_brushOffset;
4251
4252function d3_svg_brushRedrawX(g, extent) {
4253 g.select(".extent").attr("x", extent[0][0]);
4254 g.selectAll(".n,.s,.w,.nw,.sw").attr("x", extent[0][0] - 2);
4255 g.selectAll(".e,.ne,.se").attr("x", extent[1][0] - 3);
4256 g.selectAll(".extent,.n,.s").attr("width", extent[1][0] - extent[0][0]);
4257}
4258
4259function d3_svg_brushRedrawY(g, extent) {
4260 g.select(".extent").attr("y", extent[0][1]);
4261 g.selectAll(".n,.e,.w,.nw,.ne").attr("y", extent[0][1] - 3);
4262 g.selectAll(".s,.se,.sw").attr("y", extent[1][1] - 4);
4263 g.selectAll(".extent,.e,.w").attr("height", extent[1][1] - extent[0][1]);
4264}
4265
4266function d3_svg_brushKeydown() {
4267 if (d3.event.keyCode == 32 && d3_svg_brushTarget && !d3_svg_brushDrag) {
4268 d3_svg_brushCenter = null;
4269 d3_svg_brushOffset[0] -= d3_svg_brushExtent[1][0];
4270 d3_svg_brushOffset[1] -= d3_svg_brushExtent[1][1];
4271 d3_svg_brushDrag = 2;
4272 d3_eventCancel();
4273 }
4274}
4275
4276function d3_svg_brushKeyup() {
4277 if (d3.event.keyCode == 32 && d3_svg_brushDrag == 2) {
4278 d3_svg_brushOffset[0] += d3_svg_brushExtent[1][0];
4279 d3_svg_brushOffset[1] += d3_svg_brushExtent[1][1];
4280 d3_svg_brushDrag = 0;
4281 d3_eventCancel();
4282 }
4283}
4284
4285function d3_svg_brushMove() {
4286 if (d3_svg_brushOffset) {
4287 var mouse = d3.svg.mouse(d3_svg_brushTarget),
4288 g = d3.select(d3_svg_brushTarget);
4289
4290 if (!d3_svg_brushDrag) {
4291
4292 // If needed, determine the center from the current extent.
4293 if (d3.event.altKey) {
4294 if (!d3_svg_brushCenter) {
4295 d3_svg_brushCenter = [
4296 (d3_svg_brushExtent[0][0] + d3_svg_brushExtent[1][0]) / 2,
4297 (d3_svg_brushExtent[0][1] + d3_svg_brushExtent[1][1]) / 2
4298 ];
4299 }
4300
4301 // Update the offset, for when the ALT key is released.
4302 d3_svg_brushOffset[0] = d3_svg_brushExtent[+(mouse[0] < d3_svg_brushCenter[0])][0];
4303 d3_svg_brushOffset[1] = d3_svg_brushExtent[+(mouse[1] < d3_svg_brushCenter[1])][1];
4304 }
4305
4306 // When the ALT key is released, we clear the center.
4307 else d3_svg_brushCenter = null;
4308 }
4309
4310 // Update the brush extent for each dimension.
4311 if (d3_svg_brushX) {
4312 d3_svg_brushMove1(mouse, d3_svg_brushX, 0);
4313 d3_svg_brushRedrawX(g, d3_svg_brushExtent);
4314 }
4315 if (d3_svg_brushY) {
4316 d3_svg_brushMove1(mouse, d3_svg_brushY, 1);
4317 d3_svg_brushRedrawY(g, d3_svg_brushExtent);
4318 }
4319
4320 // Notify listeners.
4321 d3_svg_brushDispatch("brush");
4322 }
4323}
4324
4325function d3_svg_brushMove1(mouse, scale, i) {
4326 var range = d3_scaleRange(scale),
4327 r0 = range[0],
4328 r1 = range[1],
4329 offset = d3_svg_brushOffset[i],
4330 size = d3_svg_brushExtent[1][i] - d3_svg_brushExtent[0][i],
4331 min,
4332 max;
4333
4334 // When dragging, reduce the range by the extent size and offset.
4335 if (d3_svg_brushDrag) {
4336 r0 -= offset;
4337 r1 -= size + offset;
4338 }
4339
4340 // Clamp the mouse so that the extent fits within the range extent.
4341 min = Math.max(r0, Math.min(r1, mouse[i]));
4342
4343 // Compute the new extent bounds.
4344 if (d3_svg_brushDrag) {
4345 max = (min += offset) + size;
4346 } else {
4347
4348 // If the ALT key is pressed, then preserve the center of the extent.
4349 if (d3_svg_brushCenter) offset = Math.max(r0, Math.min(r1, 2 * d3_svg_brushCenter[i] - min));
4350
4351 // Compute the min and max of the offset and mouse.
4352 if (offset < min) {
4353 max = min;
4354 min = offset;
4355 } else {
4356 max = offset;
4357 }
4358 }
4359
4360 // Update the stored bounds.
4361 d3_svg_brushExtent[0][i] = min;
4362 d3_svg_brushExtent[1][i] = max;
4363}
4364
4365function d3_svg_brushUp() {
4366 if (d3_svg_brushOffset) {
4367 d3_svg_brushMove();
4368 d3.select(d3_svg_brushTarget).selectAll(".resize").style("pointer-events", d3_svg_brush.empty() ? "none" : "all");
4369 d3_svg_brushDispatch("brushend");
4370 d3_svg_brush =
4371 d3_svg_brushDispatch =
4372 d3_svg_brushTarget =
4373 d3_svg_brushX =
4374 d3_svg_brushY =
4375 d3_svg_brushExtent =
4376 d3_svg_brushDrag =
4377 d3_svg_brushResize =
4378 d3_svg_brushCenter =
4379 d3_svg_brushOffset = null;
4380 d3_eventCancel();
4381 }
4382}
4383
4384var d3_svg_brushCursor = {
4385 n: "ns-resize",
4386 e: "ew-resize",
4387 s: "ns-resize",
4388 w: "ew-resize",
4389 nw: "nwse-resize",
4390 ne: "nesw-resize",
4391 se: "nwse-resize",
4392 sw: "nesw-resize"
4393};
4394d3.behavior = {};
4395// TODO Track touch points by identifier.
4396
4397d3.behavior.drag = function() {
4398 var event = d3.dispatch("drag", "dragstart", "dragend"),
4399 origin = null;
4400
4401 function drag() {
4402 this
4403 .on("mousedown.drag", mousedown)
4404 .on("touchstart.drag", mousedown);
4405
4406 d3.select(window)
4407 .on("mousemove.drag", d3_behavior_dragMove)
4408 .on("touchmove.drag", d3_behavior_dragMove)
4409 .on("mouseup.drag", d3_behavior_dragUp, true)
4410 .on("touchend.drag", d3_behavior_dragUp, true)
4411 .on("click.drag", d3_behavior_dragClick, true);
4412 }
4413
4414 // snapshot the local context for subsequent dispatch
4415 function start() {
4416 d3_behavior_dragEvent = event;
4417 d3_behavior_dragEventTarget = d3.event.target;
4418 d3_behavior_dragTarget = this;
4419 d3_behavior_dragArguments = arguments;
4420 d3_behavior_dragOrigin = d3_behavior_dragPoint();
4421 if (origin) {
4422 d3_behavior_dragOffset = origin.apply(d3_behavior_dragTarget, d3_behavior_dragArguments);
4423 d3_behavior_dragOffset = [d3_behavior_dragOffset.x - d3_behavior_dragOrigin[0], d3_behavior_dragOffset.y - d3_behavior_dragOrigin[1]];
4424 } else {
4425 d3_behavior_dragOffset = [0, 0];
4426 }
4427 d3_behavior_dragMoved = 0;
4428 }
4429
4430 function mousedown() {
4431 start.apply(this, arguments);
4432 d3_behavior_dragDispatch("dragstart");
4433 }
4434
4435 drag.origin = function(x) {
4436 if (!arguments.length) return origin;
4437 origin = x;
4438 return drag;
4439 };
4440
4441 return d3.rebind(drag, event, "on");
4442};
4443
4444var d3_behavior_dragEvent,
4445 d3_behavior_dragEventTarget,
4446 d3_behavior_dragTarget,
4447 d3_behavior_dragArguments,
4448 d3_behavior_dragOffset,
4449 d3_behavior_dragOrigin,
4450 d3_behavior_dragMoved;
4451
4452function d3_behavior_dragDispatch(type) {
4453 var p = d3_behavior_dragPoint(),
4454 o = d3.event,
4455 e = d3.event = {type: type};
4456
4457 if (p) {
4458 e.x = p[0] + d3_behavior_dragOffset[0];
4459 e.y = p[1] + d3_behavior_dragOffset[1];
4460 e.dx = p[0] - d3_behavior_dragOrigin[0];
4461 e.dy = p[1] - d3_behavior_dragOrigin[1];
4462 d3_behavior_dragMoved |= e.dx | e.dy;
4463 d3_behavior_dragOrigin = p;
4464 }
4465
4466 try {
4467 d3_behavior_dragEvent[type].apply(d3_behavior_dragTarget, d3_behavior_dragArguments);
4468 } finally {
4469 d3.event = o;
4470 }
4471
4472 o.stopPropagation();
4473 o.preventDefault();
4474}
4475
4476function d3_behavior_dragPoint() {
4477 var p = d3_behavior_dragTarget.parentNode,
4478 t = d3.event.changedTouches;
4479 return p && (t
4480 ? d3.svg.touches(p, t)[0]
4481 : d3.svg.mouse(p));
4482}
4483
4484function d3_behavior_dragMove() {
4485 if (!d3_behavior_dragTarget) return;
4486 var parent = d3_behavior_dragTarget.parentNode;
4487
4488 // O NOES! The drag element was removed from the DOM.
4489 if (!parent) return d3_behavior_dragUp();
4490
4491 d3_behavior_dragDispatch("drag");
4492 d3_eventCancel();
4493}
4494
4495function d3_behavior_dragUp() {
4496 if (!d3_behavior_dragTarget) return;
4497 d3_behavior_dragDispatch("dragend");
4498
4499 // If the node was moved, prevent the mouseup from propagating.
4500 // Also prevent the subsequent click from propagating (e.g., for anchors).
4501 if (d3_behavior_dragMoved) {
4502 d3_eventCancel();
4503 d3_behavior_dragMoved = d3.event.target === d3_behavior_dragEventTarget;
4504 }
4505
4506 d3_behavior_dragEvent =
4507 d3_behavior_dragEventTarget =
4508 d3_behavior_dragTarget =
4509 d3_behavior_dragArguments =
4510 d3_behavior_dragOffset =
4511 d3_behavior_dragOrigin = null;
4512}
4513
4514function d3_behavior_dragClick() {
4515 if (d3_behavior_dragMoved) {
4516 d3_eventCancel();
4517 d3_behavior_dragMoved = 0;
4518 }
4519}
4520// TODO unbind zoom behavior?
4521d3.behavior.zoom = function() {
4522 var xyz = [0, 0, 0],
4523 event = d3.dispatch("zoom"),
4524 extent = d3_behavior_zoomInfiniteExtent;
4525
4526 function zoom() {
4527 this
4528 .on("mousedown.zoom", mousedown)
4529 .on("mousewheel.zoom", mousewheel)
4530 .on("DOMMouseScroll.zoom", mousewheel)
4531 .on("dblclick.zoom", dblclick)
4532 .on("touchstart.zoom", touchstart);
4533
4534 d3.select(window)
4535 .on("mousemove.zoom", d3_behavior_zoomMousemove)
4536 .on("mouseup.zoom", d3_behavior_zoomMouseup)
4537 .on("touchmove.zoom", d3_behavior_zoomTouchmove)
4538 .on("touchend.zoom", d3_behavior_zoomTouchup)
4539 .on("click.zoom", d3_behavior_zoomClick, true);
4540 }
4541
4542 // snapshot the local context for subsequent dispatch
4543 function start() {
4544 d3_behavior_zoomXyz = xyz;
4545 d3_behavior_zoomExtent = extent;
4546 d3_behavior_zoomDispatch = event.zoom;
4547 d3_behavior_zoomEventTarget = d3.event.target;
4548 d3_behavior_zoomTarget = this;
4549 d3_behavior_zoomArguments = arguments;
4550 }
4551
4552 function mousedown() {
4553 start.apply(this, arguments);
4554 d3_behavior_zoomPanning = d3_behavior_zoomLocation(d3.svg.mouse(d3_behavior_zoomTarget));
4555 d3_behavior_zoomMoved = 0;
4556 d3.event.preventDefault();
4557 window.focus();
4558 }
4559
4560 // store starting mouse location
4561 function mousewheel() {
4562 start.apply(this, arguments);
4563 if (!d3_behavior_zoomZooming) d3_behavior_zoomZooming = d3_behavior_zoomLocation(d3.svg.mouse(d3_behavior_zoomTarget));
4564 d3_behavior_zoomTo(d3_behavior_zoomDelta() + xyz[2], d3.svg.mouse(d3_behavior_zoomTarget), d3_behavior_zoomZooming);
4565 }
4566
4567 function dblclick() {
4568 start.apply(this, arguments);
4569 var mouse = d3.svg.mouse(d3_behavior_zoomTarget);
4570 d3_behavior_zoomTo(d3.event.shiftKey ? Math.ceil(xyz[2] - 1) : Math.floor(xyz[2] + 1), mouse, d3_behavior_zoomLocation(mouse));
4571 }
4572
4573 // doubletap detection
4574 function touchstart() {
4575 start.apply(this, arguments);
4576 var touches = d3_behavior_zoomTouchup(),
4577 touch,
4578 now = Date.now();
4579 if ((touches.length === 1) && (now - d3_behavior_zoomLast < 300)) {
4580 d3_behavior_zoomTo(1 + Math.floor(xyz[2]), touch = touches[0], d3_behavior_zoomLocations[touch.identifier]);
4581 }
4582 d3_behavior_zoomLast = now;
4583 }
4584
4585 zoom.extent = function(x) {
4586 if (!arguments.length) return extent;
4587 extent = x == null ? d3_behavior_zoomInfiniteExtent : x;
4588 return zoom;
4589 };
4590
4591 return d3.rebind(zoom, event, "on");
4592};
4593
4594var d3_behavior_zoomDiv,
4595 d3_behavior_zoomPanning,
4596 d3_behavior_zoomZooming,
4597 d3_behavior_zoomLocations = {}, // identifier -> location
4598 d3_behavior_zoomLast = 0,
4599 d3_behavior_zoomXyz,
4600 d3_behavior_zoomExtent,
4601 d3_behavior_zoomDispatch,
4602 d3_behavior_zoomEventTarget,
4603 d3_behavior_zoomTarget,
4604 d3_behavior_zoomArguments,
4605 d3_behavior_zoomMoved;
4606
4607function d3_behavior_zoomLocation(point) {
4608 return [
4609 point[0] - d3_behavior_zoomXyz[0],
4610 point[1] - d3_behavior_zoomXyz[1],
4611 d3_behavior_zoomXyz[2]
4612 ];
4613}
4614
4615// detect the pixels that would be scrolled by this wheel event
4616function d3_behavior_zoomDelta() {
4617
4618 // mousewheel events are totally broken!
4619 // https://bugs.webkit.org/show_bug.cgi?id=40441
4620 // not only that, but Chrome and Safari differ in re. to acceleration!
4621 if (!d3_behavior_zoomDiv) {
4622 d3_behavior_zoomDiv = d3.select("body").append("div")
4623 .style("visibility", "hidden")
4624 .style("top", 0)
4625 .style("height", 0)
4626 .style("width", 0)
4627 .style("overflow-y", "scroll")
4628 .append("div")
4629 .style("height", "2000px")
4630 .node().parentNode;
4631 }
4632
4633 var e = d3.event, delta;
4634 try {
4635 d3_behavior_zoomDiv.scrollTop = 1000;
4636 d3_behavior_zoomDiv.dispatchEvent(e);
4637 delta = 1000 - d3_behavior_zoomDiv.scrollTop;
4638 } catch (error) {
4639 delta = e.wheelDelta || (-e.detail * 5);
4640 }
4641
4642 return delta * .005;
4643}
4644
4645// Note: Since we don't rotate, it's possible for the touches to become
4646// slightly detached from their original positions. Thus, we recompute the
4647// touch points on touchend as well as touchstart!
4648function d3_behavior_zoomTouchup() {
4649 var touches = d3.svg.touches(d3_behavior_zoomTarget),
4650 i = -1,
4651 n = touches.length,
4652 touch;
4653 while (++i < n) d3_behavior_zoomLocations[(touch = touches[i]).identifier] = d3_behavior_zoomLocation(touch);
4654 return touches;
4655}
4656
4657function d3_behavior_zoomTouchmove() {
4658 var touches = d3.svg.touches(d3_behavior_zoomTarget);
4659 switch (touches.length) {
4660
4661 // single-touch pan
4662 case 1: {
4663 var touch = touches[0];
4664 d3_behavior_zoomTo(d3_behavior_zoomXyz[2], touch, d3_behavior_zoomLocations[touch.identifier]);
4665 break;
4666 }
4667
4668 // double-touch pan + zoom
4669 case 2: {
4670 var p0 = touches[0],
4671 p1 = touches[1],
4672 p2 = [(p0[0] + p1[0]) / 2, (p0[1] + p1[1]) / 2],
4673 l0 = d3_behavior_zoomLocations[p0.identifier],
4674 l1 = d3_behavior_zoomLocations[p1.identifier],
4675 l2 = [(l0[0] + l1[0]) / 2, (l0[1] + l1[1]) / 2, l0[2]];
4676 d3_behavior_zoomTo(Math.log(d3.event.scale) / Math.LN2 + l0[2], p2, l2);
4677 break;
4678 }
4679 }
4680}
4681
4682function d3_behavior_zoomMousemove() {
4683 d3_behavior_zoomZooming = null;
4684 if (d3_behavior_zoomPanning) {
4685 d3_behavior_zoomMoved = 1;
4686 d3_behavior_zoomTo(d3_behavior_zoomXyz[2], d3.svg.mouse(d3_behavior_zoomTarget), d3_behavior_zoomPanning);
4687 }
4688}
4689
4690function d3_behavior_zoomMouseup() {
4691 if (d3_behavior_zoomPanning) {
4692 if (d3_behavior_zoomMoved) {
4693 d3_eventCancel();
4694 d3_behavior_zoomMoved = d3_behavior_zoomEventTarget === d3.event.target;
4695 }
4696
4697 d3_behavior_zoomXyz =
4698 d3_behavior_zoomExtent =
4699 d3_behavior_zoomDispatch =
4700 d3_behavior_zoomEventTarget =
4701 d3_behavior_zoomTarget =
4702 d3_behavior_zoomArguments =
4703 d3_behavior_zoomPanning = null;
4704 }
4705}
4706
4707function d3_behavior_zoomClick() {
4708 if (d3_behavior_zoomMoved) {
4709 d3_eventCancel();
4710 d3_behavior_zoomMoved = 0;
4711 }
4712}
4713
4714function d3_behavior_zoomTo(z, x0, x1) {
4715 z = d3_behavior_zoomExtentClamp(z, 2);
4716 var j = Math.pow(2, d3_behavior_zoomXyz[2]),
4717 k = Math.pow(2, z),
4718 K = Math.pow(2, (d3_behavior_zoomXyz[2] = z) - x1[2]),
4719 x_ = d3_behavior_zoomXyz[0],
4720 y_ = d3_behavior_zoomXyz[1],
4721 x = d3_behavior_zoomXyz[0] = d3_behavior_zoomExtentClamp((x0[0] - x1[0] * K), 0, k),
4722 y = d3_behavior_zoomXyz[1] = d3_behavior_zoomExtentClamp((x0[1] - x1[1] * K), 1, k),
4723 o = d3.event; // Events can be reentrant (e.g., focus).
4724
4725 d3.event = {
4726 scale: k,
4727 translate: [x, y],
4728 transform: function(sx, sy) {
4729 if (sx) transform(sx, x_, x);
4730 if (sy) transform(sy, y_, y);
4731 }
4732 };
4733
4734 function transform(scale, a, b) {
4735 scale.domain(scale.range().map(function(v) { return scale.invert(((v - b) * j) / k + a); }));
4736 }
4737
4738 try {
4739 d3_behavior_zoomDispatch.apply(d3_behavior_zoomTarget, d3_behavior_zoomArguments);
4740 } finally {
4741 d3.event = o;
4742 }
4743
4744 o.preventDefault();
4745}
4746
4747var d3_behavior_zoomInfiniteExtent = [
4748 [-Infinity, Infinity],
4749 [-Infinity, Infinity],
4750 [-Infinity, Infinity]
4751];
4752
4753function d3_behavior_zoomExtentClamp(x, i, k) {
4754 var range = d3_behavior_zoomExtent[i],
4755 r0 = range[0],
4756 r1 = range[1];
4757 return arguments.length === 3
4758 ? Math.max(r1 * (r1 === Infinity ? -Infinity : 1 / k - 1),
4759 Math.min(r0 === -Infinity ? Infinity : r0, x / k)) * k
4760 : Math.max(r0, Math.min(r1, x));
4761}
4762})();
swtr/static/js/lib/d3.layout.cloud.js
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1// Word cloud layout by Jason Davies, http://www.jasondavies.com/word-cloud/
2// Algorithm due to Jonathan Feinberg, http://static.mrfeinberg.com/bv_ch03.pdf
3(function() {
4 function cloud() {
5 var size = [256, 256],
6 text = cloudText,
7 font = cloudFont,
8 fontSize = cloudFontSize,
9 fontStyle = cloudFontNormal,
10 fontWeight = cloudFontNormal,
11 rotate = cloudRotate,
12 padding = cloudPadding,
13 spiral = archimedeanSpiral,
14 words = [],
15 timeInterval = Infinity,
16 event = d3.dispatch("word", "end"),
17 timer = null,
18 cloud = {};
19
20 cloud.start = function() {
21 var board = zeroArray((size[0] >> 5) * size[1]),
22 bounds = null,
23 n = words.length,
24 i = -1,
25 tags = [],
26 data = words.map(function(d, i) {
27 d.text = text.call(this, d, i);
28 d.font = font.call(this, d, i);
29 d.style = fontStyle.call(this, d, i);
30 d.weight = fontWeight.call(this, d, i);
31 d.rotate = rotate.call(this, d, i);
32 d.size = ~~fontSize.call(this, d, i);
33 d.padding = padding.call(this, d, i);
34 return d;
35 }).sort(function(a, b) { return b.size - a.size; });
36
37 if (timer) clearInterval(timer);
38 timer = setInterval(step, 0);
39 step();
40
41 return cloud;
42
43 function step() {
44 var start = +new Date,
45 d;
46 while (+new Date - start < timeInterval && ++i < n && timer) {
47 d = data[i];
48 d.x = (size[0] * (Math.random() + .5)) >> 1;
49 d.y = (size[1] * (Math.random() + .5)) >> 1;
50 cloudSprite(d, data, i);
51 if (d.hasText && place(board, d, bounds)) {
52 tags.push(d);
53 event.word(d);
54 if (bounds) cloudBounds(bounds, d);
55 else bounds = [{x: d.x + d.x0, y: d.y + d.y0}, {x: d.x + d.x1, y: d.y + d.y1}];
56 // Temporary hack
57 d.x -= size[0] >> 1;
58 d.y -= size[1] >> 1;
59 }
60 }
61 if (i >= n) {
62 cloud.stop();
63 event.end(tags, bounds);
64 }
65 }
66 }
67
68 cloud.stop = function() {
69 if (timer) {
70 clearInterval(timer);
71 timer = null;
72 }
73 return cloud;
74 };
75
76 cloud.timeInterval = function(x) {
77 if (!arguments.length) return timeInterval;
78 timeInterval = x == null ? Infinity : x;
79 return cloud;
80 };
81
82 function place(board, tag, bounds) {
83 var perimeter = [{x: 0, y: 0}, {x: size[0], y: size[1]}],
84 startX = tag.x,
85 startY = tag.y,
86 maxDelta = Math.sqrt(size[0] * size[0] + size[1] * size[1]),
87 s = spiral(size),
88 dt = Math.random() < .5 ? 1 : -1,
89 t = -dt,
90 dxdy,
91 dx,
92 dy;
93
94 while (dxdy = s(t += dt)) {
95 dx = ~~dxdy[0];
96 dy = ~~dxdy[1];
97
98 if (Math.min(dx, dy) > maxDelta) break;
99
100 tag.x = startX + dx;
101 tag.y = startY + dy;
102
103 if (tag.x + tag.x0 < 0 || tag.y + tag.y0 < 0 ||
104 tag.x + tag.x1 > size[0] || tag.y + tag.y1 > size[1]) continue;
105 // TODO only check for collisions within current bounds.
106 if (!bounds || !cloudCollide(tag, board, size[0])) {
107 if (!bounds || collideRects(tag, bounds)) {
108 var sprite = tag.sprite,
109 w = tag.width >> 5,
110 sw = size[0] >> 5,
111 lx = tag.x - (w << 4),
112 sx = lx & 0x7f,
113 msx = 32 - sx,
114 h = tag.y1 - tag.y0,
115 x = (tag.y + tag.y0) * sw + (lx >> 5),
116 last;
117 for (var j = 0; j < h; j++) {
118 last = 0;
119 for (var i = 0; i <= w; i++) {
120 board[x + i] |= (last << msx) | (i < w ? (last = sprite[j * w + i]) >>> sx : 0);
121 }
122 x += sw;
123 }
124 delete tag.sprite;
125 return true;
126 }
127 }
128 }
129 return false;
130 }
131
132 cloud.words = function(x) {
133 if (!arguments.length) return words;
134 words = x;
135 return cloud;
136 };
137
138 cloud.size = function(x) {
139 if (!arguments.length) return size;
140 size = [+x[0], +x[1]];
141 return cloud;
142 };
143
144 cloud.font = function(x) {
145 if (!arguments.length) return font;
146 font = d3.functor(x);
147 return cloud;
148 };
149
150 cloud.fontStyle = function(x) {
151 if (!arguments.length) return fontStyle;
152 fontStyle = d3.functor(x);
153 return cloud;
154 };
155
156 cloud.fontWeight = function(x) {
157 if (!arguments.length) return fontWeight;
158 fontWeight = d3.functor(x);
159 return cloud;
160 };
161
162 cloud.rotate = function(x) {
163 if (!arguments.length) return rotate;
164 rotate = d3.functor(x);
165 return cloud;
166 };
167
168 cloud.text = function(x) {
169 if (!arguments.length) return text;
170 text = d3.functor(x);
171 return cloud;
172 };
173
174 cloud.spiral = function(x) {
175 if (!arguments.length) return spiral;
176 spiral = spirals[x + ""] || x;
177 return cloud;
178 };
179
180 cloud.fontSize = function(x) {
181 if (!arguments.length) return fontSize;
182 fontSize = d3.functor(x);
183 return cloud;
184 };
185
186 cloud.padding = function(x) {
187 if (!arguments.length) return padding;
188 padding = d3.functor(x);
189 return cloud;
190 };
191
192 return d3.rebind(cloud, event, "on");
193 }
194
195 function cloudText(d) {
196 return d.text;
197 }
198
199 function cloudFont() {
200 return "serif";
201 }
202
203 function cloudFontNormal() {
204 return "normal";
205 }
206
207 function cloudFontSize(d) {
208 return Math.sqrt(d.value);
209 }
210
211 function cloudRotate() {
212 return (~~(Math.random() * 6) - 3) * 30;
213 }
214
215 function cloudPadding() {
216 return 1;
217 }
218
219 // Fetches a monochrome sprite bitmap for the specified text.
220 // Load in batches for speed.
221 function cloudSprite(d, data, di) {
222 if (d.sprite) return;
223 c.clearRect(0, 0, (cw << 5) / ratio, ch / ratio);
224 var x = 0,
225 y = 0,
226 maxh = 0,
227 n = data.length;
228 --di;
229 while (++di < n) {
230 d = data[di];
231 c.save();
232 c.font = d.style + " " + d.weight + " " + ~~((d.size + 1) / ratio) + "px " + d.font;
233 var w = c.measureText(d.text + "m").width * ratio,
234 h = d.size << 1;
235 if (d.rotate) {
236 var sr = Math.sin(d.rotate * cloudRadians),
237 cr = Math.cos(d.rotate * cloudRadians),
238 wcr = w * cr,
239 wsr = w * sr,
240 hcr = h * cr,
241 hsr = h * sr;
242 w = (Math.max(Math.abs(wcr + hsr), Math.abs(wcr - hsr)) + 0x1f) >> 5 << 5;
243 h = ~~Math.max(Math.abs(wsr + hcr), Math.abs(wsr - hcr));
244 } else {
245 w = (w + 0x1f) >> 5 << 5;
246 }
247 if (h > maxh) maxh = h;
248 if (x + w >= (cw << 5)) {
249 x = 0;
250 y += maxh;
251 maxh = 0;
252 }
253 if (y + h >= ch) break;
254 c.translate((x + (w >> 1)) / ratio, (y + (h >> 1)) / ratio);
255 if (d.rotate) c.rotate(d.rotate * cloudRadians);
256 c.fillText(d.text, 0, 0);
257 if (d.padding) c.lineWidth = 2 * d.padding, c.strokeText(d.text, 0, 0);
258 c.restore();
259 d.width = w;
260 d.height = h;
261 d.xoff = x;
262 d.yoff = y;
263 d.x1 = w >> 1;
264 d.y1 = h >> 1;
265 d.x0 = -d.x1;
266 d.y0 = -d.y1;
267 d.hasText = true;
268 x += w;
269 }
270 var pixels = c.getImageData(0, 0, (cw << 5) / ratio, ch / ratio).data,
271 sprite = [];
272 while (--di >= 0) {
273 d = data[di];
274 if (!d.hasText) continue;
275 var w = d.width,
276 w32 = w >> 5,
277 h = d.y1 - d.y0;
278 // Zero the buffer
279 for (var i = 0; i < h * w32; i++) sprite[i] = 0;
280 x = d.xoff;
281 if (x == null) return;
282 y = d.yoff;
283 var seen = 0,
284 seenRow = -1;
285 for (var j = 0; j < h; j++) {
286 for (var i = 0; i < w; i++) {
287 var k = w32 * j + (i >> 5),
288 m = pixels[((y + j) * (cw << 5) + (x + i)) << 2] ? 1 << (31 - (i % 32)) : 0;
289 sprite[k] |= m;
290 seen |= m;
291 }
292 if (seen) seenRow = j;
293 else {
294 d.y0++;
295 h--;
296 j--;
297 y++;
298 }
299 }
300 d.y1 = d.y0 + seenRow;
301 d.sprite = sprite.slice(0, (d.y1 - d.y0) * w32);
302 }
303 }
304
305 // Use mask-based collision detection.
306 function cloudCollide(tag, board, sw) {
307 sw >>= 5;
308 var sprite = tag.sprite,
309 w = tag.width >> 5,
310 lx = tag.x - (w << 4),
311 sx = lx & 0x7f,
312 msx = 32 - sx,
313 h = tag.y1 - tag.y0,
314 x = (tag.y + tag.y0) * sw + (lx >> 5),
315 last;
316 for (var j = 0; j < h; j++) {
317 last = 0;
318 for (var i = 0; i <= w; i++) {
319 if (((last << msx) | (i < w ? (last = sprite[j * w + i]) >>> sx : 0))
320 & board[x + i]) return true;
321 }
322 x += sw;
323 }
324 return false;
325 }
326
327 function cloudBounds(bounds, d) {
328 var b0 = bounds[0],
329 b1 = bounds[1];
330 if (d.x + d.x0 < b0.x) b0.x = d.x + d.x0;
331 if (d.y + d.y0 < b0.y) b0.y = d.y + d.y0;
332 if (d.x + d.x1 > b1.x) b1.x = d.x + d.x1;
333 if (d.y + d.y1 > b1.y) b1.y = d.y + d.y1;
334 }
335
336 function collideRects(a, b) {
337 return a.x + a.x1 > b[0].x && a.x + a.x0 < b[1].x && a.y + a.y1 > b[0].y && a.y + a.y0 < b[1].y;
338 }
339
340 function archimedeanSpiral(size) {
341 var e = size[0] / size[1];
342 return function(t) {
343 return [e * (t *= .1) * Math.cos(t), t * Math.sin(t)];
344 };
345 }
346
347 function rectangularSpiral(size) {
348 var dy = 4,
349 dx = dy * size[0] / size[1],
350 x = 0,
351 y = 0;
352 return function(t) {
353 var sign = t < 0 ? -1 : 1;
354 // See triangular numbers: T_n = n * (n + 1) / 2.
355 switch ((Math.sqrt(1 + 4 * sign * t) - sign) & 3) {
356 case 0: x += dx; break;
357 case 1: y += dy; break;
358 case 2: x -= dx; break;
359 default: y -= dy; break;
360 }
361 return [x, y];
362 };
363 }
364
365 // TODO reuse arrays?
366 function zeroArray(n) {
367 var a = [],
368 i = -1;
369 while (++i < n) a[i] = 0;
370 return a;
371 }
372
373 var cloudRadians = Math.PI / 180,
374 cw = 1 << 11 >> 5,
375 ch = 1 << 11,
376 canvas,
377 ratio = 1;
378
379 if (typeof document !== "undefined") {
380 canvas = document.createElement("canvas");
381 canvas.width = 1;
382 canvas.height = 1;
383 ratio = Math.sqrt(canvas.getContext("2d").getImageData(0, 0, 1, 1).data.length >> 2);
384 canvas.width = (cw << 5) / ratio;
385 canvas.height = ch / ratio;
386 } else {
387 // Attempt to use node-canvas.
388 canvas = new Canvas(cw << 5, ch);
389 }
390
391 var c = canvas.getContext("2d"),
392 spirals = {
393 archimedean: archimedeanSpiral,
394 rectangular: rectangularSpiral
395 };
396 c.fillStyle = c.strokeStyle = "red";
397 c.textAlign = "center";
398
399 if (typeof module === "object" && module.exports) module.exports = cloud;
400 else (d3.layout || (d3.layout = {})).cloud = cloud;
401})();