PerformanceTests/Animometer/tests/master/resources/canvas-stage.js

   1 SimpleCanvasStage = Utilities.createSubclass(Stage,
   2     function(canvasObject)
   3     {
   4         Stage.call(this);
   5         this._canvasObject = canvasObject;
   6         this.objects = [];
   7     }, {
   8
   9     initialize: function(benchmark, options)
  10     {
  11         Stage.prototype.initialize.call(this, benchmark, options);
  12         this.context = this.element.getContext("2d");
  13     },
  14
  15     tune: function(count)
  16     {
  17         if (count == 0)
  18             return;
  19
  20         if (count > 0) {
  21             for (var i = 0; i < count; ++i)
  22                 this.objects.push(new this._canvasObject(this));
  23             return;
  24         }
  25
  26         count = Math.min(-count, this.objects.length);
  27         this.objects.splice(0, count);
  28     },
  29
  30     animate: function()
  31     {
  32         var context = this.context;
  33         context.clearRect(0, 0, this.size.x, this.size.y);
  34         this.objects.forEach(function(object) {
  35             object.draw(context);
  36         });
  37     },
  38
  39     complexity: function()
  40     {
  41         return this.objects.length;
  42     }
  43 });