506 lines
No EOL
15 KiB
JavaScript
506 lines
No EOL
15 KiB
JavaScript
(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g=(g.d3||(g.d3 = {}));g=(g.layout||(g.layout = {}));g.cloud = f()}})(function(){var define,module,exports;return (function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
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// Word cloud layout by Jason Davies, https://www.jasondavies.com/wordcloud/
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// Algorithm due to Jonathan Feinberg, https://s3.amazonaws.com/static.mrfeinberg.com/bv_ch03.pdf
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const dispatch = require("d3-dispatch").dispatch;
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const RADIANS = Math.PI / 180;
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const SPIRALS = {
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archimedean: archimedeanSpiral,
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rectangular: rectangularSpiral
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};
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const cw = 1 << 11 >> 5;
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const ch = 1 << 11;
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module.exports = function() {
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var size = [256, 256],
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text = cloudText,
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font = cloudFont,
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fontSize = cloudFontSize,
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fontStyle = cloudFontNormal,
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fontWeight = cloudFontNormal,
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rotate = cloudRotate,
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padding = cloudPadding,
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spiral = archimedeanSpiral,
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words = [],
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timeInterval = Infinity,
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event = dispatch("word", "end"),
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timer = null,
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random = Math.random,
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cloud = {},
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canvas = cloudCanvas;
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cloud.canvas = function(_) {
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return arguments.length ? (canvas = functor(_), cloud) : canvas;
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};
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cloud.start = function() {
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var contextAndRatio = getContext(canvas()),
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board = zeroArray((size[0] >> 5) * size[1]),
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bounds = null,
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n = words.length,
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i = -1,
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tags = [],
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data = words.map(function(d, i) {
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d.text = text.call(this, d, i);
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d.font = font.call(this, d, i);
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d.style = fontStyle.call(this, d, i);
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d.weight = fontWeight.call(this, d, i);
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d.rotate = rotate.call(this, d, i);
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d.size = ~~fontSize.call(this, d, i);
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d.padding = padding.call(this, d, i);
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return d;
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}).sort(function(a, b) { return b.size - a.size; });
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if (timer) clearInterval(timer);
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timer = setInterval(step, 0);
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step();
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return cloud;
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function step() {
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var start = Date.now();
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while (Date.now() - start < timeInterval && ++i < n && timer) {
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var d = data[i];
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d.x = (size[0] * (random() + .5)) >> 1;
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d.y = (size[1] * (random() + .5)) >> 1;
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cloudSprite(contextAndRatio, d, data, i);
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if (d.hasText && place(board, d, bounds)) {
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tags.push(d);
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event.call("word", cloud, d);
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if (bounds) cloudBounds(bounds, d);
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else bounds = [{x: d.x + d.x0, y: d.y + d.y0}, {x: d.x + d.x1, y: d.y + d.y1}];
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// Temporary hack
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d.x -= size[0] >> 1;
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d.y -= size[1] >> 1;
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}
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}
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if (i >= n) {
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cloud.stop();
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event.call("end", cloud, tags, bounds);
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}
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}
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}
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cloud.stop = function() {
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if (timer) {
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clearInterval(timer);
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timer = null;
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}
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for (const d of words) {
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delete d.sprite;
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}
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return cloud;
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};
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function getContext(canvas) {
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const context = canvas.getContext("2d", {willReadFrequently: true});
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canvas.width = canvas.height = 1;
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const ratio = Math.sqrt(context.getImageData(0, 0, 1, 1).data.length >> 2);
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canvas.width = (cw << 5) / ratio;
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canvas.height = ch / ratio;
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context.fillStyle = context.strokeStyle = "red";
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return {context, ratio};
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}
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function place(board, tag, bounds) {
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var perimeter = [{x: 0, y: 0}, {x: size[0], y: size[1]}],
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startX = tag.x,
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startY = tag.y,
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maxDelta = Math.sqrt(size[0] * size[0] + size[1] * size[1]),
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s = spiral(size),
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dt = random() < .5 ? 1 : -1,
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t = -dt,
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dxdy,
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dx,
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dy;
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while (dxdy = s(t += dt)) {
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dx = ~~dxdy[0];
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dy = ~~dxdy[1];
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if (Math.min(Math.abs(dx), Math.abs(dy)) >= maxDelta) break;
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tag.x = startX + dx;
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tag.y = startY + dy;
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if (tag.x + tag.x0 < 0 || tag.y + tag.y0 < 0 ||
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tag.x + tag.x1 > size[0] || tag.y + tag.y1 > size[1]) continue;
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// TODO only check for collisions within current bounds.
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if (!bounds || collideRects(tag, bounds)) {
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if (!cloudCollide(tag, board, size[0])) {
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var sprite = tag.sprite,
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w = tag.width >> 5,
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sw = size[0] >> 5,
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lx = tag.x - (w << 4),
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sx = lx & 0x7f,
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msx = 32 - sx,
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h = tag.y1 - tag.y0,
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x = (tag.y + tag.y0) * sw + (lx >> 5),
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last;
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for (var j = 0; j < h; j++) {
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last = 0;
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for (var i = 0; i <= w; i++) {
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board[x + i] |= (last << msx) | (i < w ? (last = sprite[j * w + i]) >>> sx : 0);
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}
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x += sw;
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}
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return true;
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}
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}
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}
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return false;
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}
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cloud.timeInterval = function(_) {
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return arguments.length ? (timeInterval = _ == null ? Infinity : _, cloud) : timeInterval;
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};
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cloud.words = function(_) {
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return arguments.length ? (words = _, cloud) : words;
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};
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cloud.size = function(_) {
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return arguments.length ? (size = [+_[0], +_[1]], cloud) : size;
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};
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cloud.font = function(_) {
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return arguments.length ? (font = functor(_), cloud) : font;
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};
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cloud.fontStyle = function(_) {
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return arguments.length ? (fontStyle = functor(_), cloud) : fontStyle;
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};
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cloud.fontWeight = function(_) {
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return arguments.length ? (fontWeight = functor(_), cloud) : fontWeight;
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};
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cloud.rotate = function(_) {
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return arguments.length ? (rotate = functor(_), cloud) : rotate;
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};
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cloud.text = function(_) {
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return arguments.length ? (text = functor(_), cloud) : text;
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};
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cloud.spiral = function(_) {
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return arguments.length ? (spiral = SPIRALS[_] || _, cloud) : spiral;
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};
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cloud.fontSize = function(_) {
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return arguments.length ? (fontSize = functor(_), cloud) : fontSize;
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};
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cloud.padding = function(_) {
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return arguments.length ? (padding = functor(_), cloud) : padding;
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};
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cloud.random = function(_) {
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return arguments.length ? (random = _, cloud) : random;
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};
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cloud.on = function() {
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var value = event.on.apply(event, arguments);
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return value === event ? cloud : value;
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};
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return cloud;
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};
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function cloudText(d) {
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return d.text;
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}
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function cloudFont() {
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return "serif";
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}
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function cloudFontNormal() {
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return "normal";
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}
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function cloudFontSize(d) {
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return Math.sqrt(d.value);
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}
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function cloudRotate() {
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return (~~(random() * 6) - 3) * 30;
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}
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function cloudPadding() {
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return 1;
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}
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// Fetches a monochrome sprite bitmap for the specified text.
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// Load in batches for speed.
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function cloudSprite(contextAndRatio, d, data, di) {
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if (d.sprite) return;
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var c = contextAndRatio.context,
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ratio = contextAndRatio.ratio;
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c.clearRect(0, 0, (cw << 5) / ratio, ch / ratio);
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var x = 0,
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y = 0,
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maxh = 0,
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n = data.length;
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--di;
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while (++di < n) {
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d = data[di];
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c.save();
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c.font = d.style + " " + d.weight + " " + ~~((d.size + 1) / ratio) + "px " + d.font;
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const metrics = c.measureText(d.text);
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const anchor = -Math.floor(metrics.width / 2);
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let w = (metrics.width + 1) * ratio;
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let h = d.size << 1;
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if (d.rotate) {
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var sr = Math.sin(d.rotate * RADIANS),
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cr = Math.cos(d.rotate * RADIANS),
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wcr = w * cr,
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wsr = w * sr,
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hcr = h * cr,
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hsr = h * sr;
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w = (Math.max(Math.abs(wcr + hsr), Math.abs(wcr - hsr)) + 0x1f) >> 5 << 5;
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h = ~~Math.max(Math.abs(wsr + hcr), Math.abs(wsr - hcr));
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} else {
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w = (w + 0x1f) >> 5 << 5;
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}
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if (h > maxh) maxh = h;
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if (x + w >= (cw << 5)) {
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x = 0;
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y += maxh;
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maxh = 0;
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}
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if (y + h >= ch) break;
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c.translate((x + (w >> 1)) / ratio, (y + (h >> 1)) / ratio);
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if (d.rotate) c.rotate(d.rotate * RADIANS);
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c.fillText(d.text, anchor, 0);
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if (d.padding) c.lineWidth = 2 * d.padding, c.strokeText(d.text, anchor, 0);
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c.restore();
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d.width = w;
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d.height = h;
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d.xoff = x;
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d.yoff = y;
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d.x1 = w >> 1;
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d.y1 = h >> 1;
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d.x0 = -d.x1;
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d.y0 = -d.y1;
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d.hasText = true;
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x += w;
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}
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var pixels = c.getImageData(0, 0, (cw << 5) / ratio, ch / ratio).data,
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sprite = [];
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while (--di >= 0) {
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d = data[di];
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if (!d.hasText) continue;
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var w = d.width,
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w32 = w >> 5,
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h = d.y1 - d.y0;
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// Zero the buffer
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for (var i = 0; i < h * w32; i++) sprite[i] = 0;
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x = d.xoff;
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if (x == null) return;
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y = d.yoff;
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var seen = 0,
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seenRow = -1;
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for (var j = 0; j < h; j++) {
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for (var i = 0; i < w; i++) {
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var k = w32 * j + (i >> 5),
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m = pixels[((y + j) * (cw << 5) + (x + i)) << 2] ? 1 << (31 - (i % 32)) : 0;
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sprite[k] |= m;
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seen |= m;
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}
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if (seen) seenRow = j;
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else {
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d.y0++;
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h--;
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j--;
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y++;
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}
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}
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d.y1 = d.y0 + seenRow;
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d.sprite = sprite.slice(0, (d.y1 - d.y0) * w32);
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}
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}
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// Use mask-based collision detection.
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function cloudCollide(tag, board, sw) {
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sw >>= 5;
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var sprite = tag.sprite,
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w = tag.width >> 5,
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lx = tag.x - (w << 4),
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sx = lx & 0x7f,
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msx = 32 - sx,
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h = tag.y1 - tag.y0,
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x = (tag.y + tag.y0) * sw + (lx >> 5),
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last;
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for (var j = 0; j < h; j++) {
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last = 0;
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for (var i = 0; i <= w; i++) {
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if (((last << msx) | (i < w ? (last = sprite[j * w + i]) >>> sx : 0))
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& board[x + i]) return true;
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}
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x += sw;
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}
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return false;
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}
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function cloudBounds(bounds, d) {
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var b0 = bounds[0],
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b1 = bounds[1];
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if (d.x + d.x0 < b0.x) b0.x = d.x + d.x0;
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if (d.y + d.y0 < b0.y) b0.y = d.y + d.y0;
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if (d.x + d.x1 > b1.x) b1.x = d.x + d.x1;
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if (d.y + d.y1 > b1.y) b1.y = d.y + d.y1;
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}
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function collideRects(a, b) {
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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;
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}
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function archimedeanSpiral(size) {
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var e = size[0] / size[1];
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return function(t) {
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return [e * (t *= .1) * Math.cos(t), t * Math.sin(t)];
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};
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}
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function rectangularSpiral(size) {
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var dy = 4,
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dx = dy * size[0] / size[1],
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x = 0,
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y = 0;
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return function(t) {
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var sign = t < 0 ? -1 : 1;
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// See triangular numbers: T_n = n * (n + 1) / 2.
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switch ((Math.sqrt(1 + 4 * sign * t) - sign) & 3) {
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case 0: x += dx; break;
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case 1: y += dy; break;
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case 2: x -= dx; break;
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default: y -= dy; break;
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}
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return [x, y];
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};
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}
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// TODO reuse arrays?
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function zeroArray(n) {
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var a = [],
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i = -1;
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while (++i < n) a[i] = 0;
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return a;
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}
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function cloudCanvas() {
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return document.createElement("canvas");
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}
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function functor(d) {
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return typeof d === "function" ? d : function() { return d; };
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}
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},{"d3-dispatch":2}],2:[function(require,module,exports){
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// https://d3js.org/d3-dispatch/ v1.0.6 Copyright 2019 Mike Bostock
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(function (global, factory) {
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typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
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typeof define === 'function' && define.amd ? define(['exports'], factory) :
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(global = global || self, factory(global.d3 = global.d3 || {}));
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}(this, function (exports) { 'use strict';
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var noop = {value: function() {}};
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function dispatch() {
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for (var i = 0, n = arguments.length, _ = {}, t; i < n; ++i) {
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if (!(t = arguments[i] + "") || (t in _) || /[\s.]/.test(t)) throw new Error("illegal type: " + t);
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_[t] = [];
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}
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return new Dispatch(_);
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}
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function Dispatch(_) {
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this._ = _;
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}
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function parseTypenames(typenames, types) {
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return typenames.trim().split(/^|\s+/).map(function(t) {
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var name = "", i = t.indexOf(".");
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if (i >= 0) name = t.slice(i + 1), t = t.slice(0, i);
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if (t && !types.hasOwnProperty(t)) throw new Error("unknown type: " + t);
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return {type: t, name: name};
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});
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}
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Dispatch.prototype = dispatch.prototype = {
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constructor: Dispatch,
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on: function(typename, callback) {
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var _ = this._,
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T = parseTypenames(typename + "", _),
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t,
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i = -1,
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n = T.length;
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// If no callback was specified, return the callback of the given type and name.
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if (arguments.length < 2) {
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while (++i < n) if ((t = (typename = T[i]).type) && (t = get(_[t], typename.name))) return t;
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return;
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}
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// If a type was specified, set the callback for the given type and name.
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// Otherwise, if a null callback was specified, remove callbacks of the given name.
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if (callback != null && typeof callback !== "function") throw new Error("invalid callback: " + callback);
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while (++i < n) {
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if (t = (typename = T[i]).type) _[t] = set(_[t], typename.name, callback);
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else if (callback == null) for (t in _) _[t] = set(_[t], typename.name, null);
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}
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return this;
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},
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copy: function() {
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var copy = {}, _ = this._;
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for (var t in _) copy[t] = _[t].slice();
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return new Dispatch(copy);
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},
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call: function(type, that) {
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if ((n = arguments.length - 2) > 0) for (var args = new Array(n), i = 0, n, t; i < n; ++i) args[i] = arguments[i + 2];
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if (!this._.hasOwnProperty(type)) throw new Error("unknown type: " + type);
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for (t = this._[type], i = 0, n = t.length; i < n; ++i) t[i].value.apply(that, args);
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},
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apply: function(type, that, args) {
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if (!this._.hasOwnProperty(type)) throw new Error("unknown type: " + type);
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for (var t = this._[type], i = 0, n = t.length; i < n; ++i) t[i].value.apply(that, args);
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}
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};
|
|
|
|
function get(type, name) {
|
|
for (var i = 0, n = type.length, c; i < n; ++i) {
|
|
if ((c = type[i]).name === name) {
|
|
return c.value;
|
|
}
|
|
}
|
|
}
|
|
|
|
function set(type, name, callback) {
|
|
for (var i = 0, n = type.length; i < n; ++i) {
|
|
if (type[i].name === name) {
|
|
type[i] = noop, type = type.slice(0, i).concat(type.slice(i + 1));
|
|
break;
|
|
}
|
|
}
|
|
if (callback != null) type.push({name: name, value: callback});
|
|
return type;
|
|
}
|
|
|
|
exports.dispatch = dispatch;
|
|
|
|
Object.defineProperty(exports, '__esModule', { value: true });
|
|
|
|
}));
|
|
|
|
},{}]},{},[1])(1)
|
|
});
|
|
|