cdf/src/inc/animate.js

A library for creating oldschool demo-like animations with JavaScript

var utils = require('utils');

var __animate_repeats = 1;

// TODO: Rewrite

var animate = function (callback, repeatsPerFrame, everyRealFrameCallback) {
  callback = callback.__animate || callback;
  repeatsPerFrame = repeatsPerFrame || 1;
  var frameNum = 0;
  var nextFrame = function () {
    __animate_repeats = repeatsPerFrame;
    var repeatNum = repeatsPerFrame;
    frameNum++;
    while(repeatNum--) {
      callback.call(window, frameNum * repeatsPerFrame + repeatsPerFrame - repeatNum, frameNum);
    }
    if(typeof everyRealFrameCallback === 'function') {
      everyRealFrameCallback.call(window, frameNum * repeatsPerFrame, frameNum);
    }
    utils.frame(nextFrame);
    __animate_repeats = 1;
  };

  nextFrame();
};

module.exports = animate;