d3.layout.cloud.js
(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 e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
var dispatch = require("d3-dispatch").dispatch;
var cloudRadians = Math.PI / 180,
cw = 1 << 11 >> 5,
ch = 1 << 11;
module.exports = function() {
var size = [256, 256],
text = cloudText,
font = cloudFont,
fontSize = cloudFontSize,
fontStyle = cloudFontNormal,
fontWeight = cloudFontNormal,
rotate = cloudRotate,
padding = cloudPadding,
spiral = archimedeanSpiral,
words = [],
timeInterval = Infinity,
event = dispatch("word", "end"),
timer = null,
random = Math.random,
cloud = {},
canvas = cloudCanvas;
cloud.canvas = function(_) {
return arguments.length ? (canvas = functor(_), cloud) : canvas;
};
cloud.start = function() {
var contextAndRatio = getContext(canvas()),
board = zeroArray((size[0] >> 5) * size[1]),
bounds = null,
n = words.length,
i = -1,
tags = [],
data = words.map(function(d, i) {
d.text = text.call(this, d, i);
d.font = font.call(this, d, i);
d.style = fontStyle.call(this, d, i);
d.weight = fontWeight.call(this, d, i);
d.rotate = rotate.call(this, d, i);
d.size = ~~fontSize.call(this, d, i);
d.padding = padding.call(this, d, i);
return d;
}).sort(function(a, b) { return b.size - a.size; });
if (timer) clearInterval(timer);
timer = setInterval(step, 0);
step();
return cloud;
function step() {
var start = Date.now();
while (Date.now() - start < timeInterval && ++i < n && timer) {
var d = data[i];
d.x = (size[0] * (random() + .5)) >> 1;
d.y = (size[1] * (random() + .5)) >> 1;
cloudSprite(contextAndRatio, d, data, i);
if (d.hasText && place(board, d, bounds)) {
tags.push(d);
event.word(d);
if (bounds) cloudBounds(bounds, d);
else bounds = [{x: d.x + d.x0, y: d.y + d.y0}, {x: d.x + d.x1, y: d.y + d.y1}];
d.x -= size[0] >> 1;
d.y -= size[1] >> 1;
}
}
if (i >= n) {
cloud.stop();
event.end(tags, bounds);
}
}
}
cloud.stop = function() {
if (timer) {
clearInterval(timer);
timer = null;
}
return cloud;
};
function getContext(canvas) {
canvas.width = canvas.height = 1;
var ratio = Math.sqrt(canvas.getContext("2d").getImageData(0, 0, 1, 1).data.length >> 2);
canvas.width = (cw << 5) / ratio;
canvas.height = ch / ratio;
var context = canvas.getContext("2d");
context.fillStyle = context.strokeStyle = "red";
context.textAlign = "center";
return {context: context, ratio: ratio};
}
function place(board, tag, bounds) {
var perimeter = [{x: 0, y: 0}, {x: size[0], y: size[1]}],
startX = tag.x,
startY = tag.y,
maxDelta = Math.sqrt(size[0] * size[0] + size[1] * size[1]),
s = spiral(size),
dt = random() < .5 ? 1 : -1,
t = -dt,
dxdy,
dx,
dy;
while (dxdy = s(t += dt)) {
dx = ~~dxdy[0];
dy = ~~dxdy[1];
if (Math.min(Math.abs(dx), Math.abs(dy)) >= maxDelta) break;
tag.x = startX + dx;
tag.y = startY + dy;
if (tag.x + tag.x0 < 0 || tag.y + tag.y0 < 0 ||
tag.x + tag.x1 > size[0] || tag.y + tag.y1 > size[1]) continue;
if (!bounds || !cloudCollide(tag, board, size[0])) {
if (!bounds || collideRects(tag, bounds)) {
var sprite = tag.sprite,
w = tag.width >> 5,
sw = size[0] >> 5,
lx = tag.x - (w << 4),
sx = lx & 0x7f,
msx = 32 - sx,
h = tag.y1 - tag.y0,
x = (tag.y + tag.y0) * sw + (lx >> 5),
last;
for (var j = 0; j < h; j++) {
last = 0;
for (var i = 0; i <= w; i++) {
board[x + i] |= (last << msx) | (i < w ? (last = sprite[j * w + i]) >>> sx : 0);
}
x += sw;
}
delete tag.sprite;
return true;
}
}
}
return false;
}
cloud.timeInterval = function(_) {
return arguments.length ? (timeInterval = _ == null ? Infinity : _, cloud) : timeInterval;
};
cloud.words = function(_) {
return arguments.length ? (words = _, cloud) : words;
};
cloud.size = function(_) {
return arguments.length ? (size = [+_[0], +_[1]], cloud) : size;
};
cloud.font = function(_) {
return arguments.length ? (font = functor(_), cloud) : font;
};
cloud.fontStyle = function(_) {
return arguments.length ? (fontStyle = functor(_), cloud) : fontStyle;
};
cloud.fontWeight = function(_) {
return arguments.length ? (fontWeight = functor(_), cloud) : fontWeight;
};
cloud.rotate = function(_) {
return arguments.length ? (rotate = functor(_), cloud) : rotate;
};
cloud.text = function(_) {
return arguments.length ? (text = functor(_), cloud) : text;
};
cloud.spiral = function(_) {
return arguments.length ? (spiral = spirals[_] || _, cloud) : spiral;
};
cloud.fontSize = function(_) {
return arguments.length ? (fontSize = functor(_), cloud) : fontSize;
};
cloud.padding = function(_) {
return arguments.length ? (padding = functor(_), cloud) : padding;
};
cloud.random = function(_) {
return arguments.length ? (random = _, cloud) : random;
};
cloud.on = function() {
var value = event.on.apply(event, arguments);
return value === event ? cloud : value;
};
return cloud;
};
function cloudText(d) {
return d.text;
}
function cloudFont() {
return "serif";
}
function cloudFontNormal() {
return "normal";
}
function cloudFontSize(d) {
return Math.sqrt(d.value);
}
function cloudRotate() {
return (~~(Math.random() * 6) - 3) * 30;
}
function cloudPadding() {
return 1;
}
function cloudSprite(contextAndRatio, d, data, di) {
if (d.sprite) return;
var c = contextAndRatio.context,
ratio = contextAndRatio.ratio;
c.clearRect(0, 0, (cw << 5) / ratio, ch / ratio);
var x = 0,
y = 0,
maxh = 0,
n = data.length;
--di;
while (++di < n) {
d = data[di];
c.save();
c.font = d.style + " " + d.weight + " " + ~~((d.size + 1) / ratio) + "px " + d.font;
var w = c.measureText(d.text + "m").width * ratio,
h = d.size << 1;
if (d.rotate) {
var sr = Math.sin(d.rotate * cloudRadians),
cr = Math.cos(d.rotate * cloudRadians),
wcr = w * cr,
wsr = w * sr,
hcr = h * cr,
hsr = h * sr;
w = (Math.max(Math.abs(wcr + hsr), Math.abs(wcr - hsr)) + 0x1f) >> 5 << 5;
h = ~~Math.max(Math.abs(wsr + hcr), Math.abs(wsr - hcr));
} else {
w = (w + 0x1f) >> 5 << 5;
}
if (h > maxh) maxh = h;
if (x + w >= (cw << 5)) {
x = 0;
y += maxh;
maxh = 0;
}
if (y + h >= ch) break;
c.translate((x + (w >> 1)) / ratio, (y + (h >> 1)) / ratio);
if (d.rotate) c.rotate(d.rotate * cloudRadians);
c.fillText(d.text, 0, 0);
if (d.padding) c.lineWidth = 2 * d.padding, c.strokeText(d.text, 0, 0);
c.restore();
d.width = w;
d.height = h;
d.xoff = x;
d.yoff = y;
d.x1 = w >> 1;
d.y1 = h >> 1;
d.x0 = -d.x1;
d.y0 = -d.y1;
d.hasText = true;
x += w;
}
var pixels = c.getImageData(0, 0, (cw << 5) / ratio, ch / ratio).data,
sprite = [];
while (--di >= 0) {
d = data[di];
if (!d.hasText) continue;
var w = d.width,
w32 = w >> 5,
h = d.y1 - d.y0;
for (var i = 0; i < h * w32; i++) sprite[i] = 0;
x = d.xoff;
if (x == null) return;
y = d.yoff;
var seen = 0,
seenRow = -1;
for (var j = 0; j < h; j++) {
for (var i = 0; i < w; i++) {
var k = w32 * j + (i >> 5),
m = pixels[((y + j) * (cw << 5) + (x + i)) << 2] ? 1 << (31 - (i % 32)) : 0;
sprite[k] |= m;
seen |= m;
}
if (seen) seenRow = j;
else {
d.y0++;
h--;
j--;
y++;
}
}
d.y1 = d.y0 + seenRow;
d.sprite = sprite.slice(0, (d.y1 - d.y0) * w32);
}
}
function cloudCollide(tag, board, sw) {
sw >>= 5;
var sprite = tag.sprite,
w = tag.width >> 5,
lx = tag.x - (w << 4),
sx = lx & 0x7f,
msx = 32 - sx,
h = tag.y1 - tag.y0,
x = (tag.y + tag.y0) * sw + (lx >> 5),
last;
for (var j = 0; j < h; j++) {
last = 0;
for (var i = 0; i <= w; i++) {
if (((last << msx) | (i < w ? (last = sprite[j * w + i]) >>> sx : 0))
& board[x + i]) return true;
}
x += sw;
}
return false;
}
function cloudBounds(bounds, d) {
var b0 = bounds[0],
b1 = bounds[1];
if (d.x + d.x0 < b0.x) b0.x = d.x + d.x0;
if (d.y + d.y0 < b0.y) b0.y = d.y + d.y0;
if (d.x + d.x1 > b1.x) b1.x = d.x + d.x1;
if (d.y + d.y1 > b1.y) b1.y = d.y + d.y1;
}
function collideRects(a, b) {
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;
}
function archimedeanSpiral(size) {
var e = size[0] / size[1];
return function(t) {
return [e * (t *= .1) * Math.cos(t), t * Math.sin(t)];
};
}
function rectangularSpiral(size) {
var dy = 4,
dx = dy * size[0] / size[1],
x = 0,
y = 0;
return function(t) {
var sign = t < 0 ? -1 : 1;
switch ((Math.sqrt(1 + 4 * sign * t) - sign) & 3) {
case 0: x += dx; break;
case 1: y += dy; break;
case 2: x -= dx; break;
default: y -= dy; break;
}
return [x, y];
};
}
function zeroArray(n) {
var a = [],
i = -1;
while (++i < n) a[i] = 0;
return a;
}
function cloudCanvas() {
return document.createElement("canvas");
}
function functor(d) {
return typeof d === "function" ? d : function() { return d; };
}
var spirals = {
archimedean: archimedeanSpiral,
rectangular: rectangularSpiral
};
},{"d3-dispatch":2}],2:[function(require,module,exports){
(function (global, factory) {
typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
typeof define === 'function' && define.amd ? define(['exports'], factory) :
factory((global.dispatch = {}));
}(this, function (exports) { 'use strict';
function Dispatch(types) {
var i = -1,
n = types.length,
callbacksByType = {},
callbackByName = {},
type,
that = this;
that.on = function(type, callback) {
type = parseType(type);
if (arguments.length < 2) {
return (callback = callbackByName[type.name]) && callback.value;
}
if (type.type) {
var callbacks = callbacksByType[type.type],
callback0 = callbackByName[type.name],
i;
if (callback0) {
callback0.value = null;
i = callbacks.indexOf(callback0);
callbacksByType[type.type] = callbacks = callbacks.slice(0, i).concat(callbacks.slice(i + 1));
delete callbackByName[type.name];
}
if (callback) {
callback = {value: callback};
callbackByName[type.name] = callback;
callbacks.push(callback);
}
}
else if (callback == null) {
for (var otherType in callbacksByType) {
if (callback = callbackByName[otherType + type.name]) {
callback.value = null;
var callbacks = callbacksByType[otherType], i = callbacks.indexOf(callback);
callbacksByType[otherType] = callbacks.slice(0, i).concat(callbacks.slice(i + 1));
delete callbackByName[callback.name];
}
}
}
return that;
};
while (++i < n) {
type = types[i] + "";
if (!type || (type in that)) throw new Error("illegal or duplicate type: " + type);
callbacksByType[type] = [];
that[type] = applier(type);
}
function parseType(type) {
var i = (type += "").indexOf("."), name = type;
if (i >= 0) type = type.slice(0, i); else name += ".";
if (type && !callbacksByType.hasOwnProperty(type)) throw new Error("unknown type: " + type);
return {type: type, name: name};
}
function applier(type) {
return function() {
var callbacks = callbacksByType[type],
callback,
callbackValue,
i = -1,
n = callbacks.length;
while (++i < n) {
if (callbackValue = (callback = callbacks[i]).value) {
callbackValue.apply(this, arguments);
}
}
return that;
};
}
}
function dispatch() {
return new Dispatch(arguments);
}
dispatch.prototype = Dispatch.prototype;
exports.dispatch = dispatch;
}));
},{}]},{},[1])(1)
});