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(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}...
// Word cloud layout by Jason Davies, https://www.jasondavies.com/wordcloud/
// Algorithm due to Jonathan Feinberg, http://static.mrfeinberg.com/bv_ch03.pdf

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);