/*
* Copyright (C) 2015-2017 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
SimpleCanvasStage = Utilities.createSubclass(Stage,
function(canvasObject)
{
Stage.call(this);
this._canvasObject = canvasObject;
this.objects = [];
this.offsetIndex = 0;
}, {
initialize: function(benchmark, options)
{
Stage.prototype.initialize.call(this, benchmark, options);
this.context = this.element.getContext("2d");
},
tune: function(count)
{
if (count == 0)
return;
if (count < 0) {
this.offsetIndex = Math.min(this.offsetIndex - count, this.objects.length);
return;
}
var newIndex = this.offsetIndex - count;
if (newIndex < 0) {
this.offsetIndex = 0;
newIndex = -newIndex;
for (var i = 0; i < newIndex; ++i) {
if (this._canvasObject.constructor === Array)
this.objects.push(new (Stage.randomElementInArray(this._canvasObject))(this));
else
this.objects.push(new this._canvasObject(this));
}
} else
this.offsetIndex = newIndex;
},
animate: function()
{
var context = this.context;
context.clearRect(0, 0, this.size.x, this.size.y);
for (var i = this.offsetIndex, length = this.objects.length; i < length; ++i)
this.objects[i].draw(context);
},
complexity: function()
{
return this.objects.length - this.offsetIndex;
}
});