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<h1 class="file-heading">File: pixi/DisplayObject.js</h1>
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<pre class="code prettyprint linenums">
/**
* @author Mat Groves http://matgroves.com/
*/
/**
* this is the base class for all objects that are rendered on the screen.
* @class DisplayObject
* @constructor
*/
PIXI.DisplayObject = function()
{
/**
* The coordinate of the object relative to the local coordinates of the parent.
* @property position
* @type Point
*/
this.position = new PIXI.Point();
/**
* The scale factor of the object.
* @property scale
* @type Point
*/
this.scale = new PIXI.Point(1,1);//{x:1, y:1};
/**
* The rotation of the object in radians.
* @property rotation
* @type Number
*/
this.rotation = 0;
/**
* The opacity of the object.
* @property alpha
* @type Number
*/
this.alpha = 1;
/**
* The visibility of the object.
* @property visible
* @type Boolean
*/
this.visible = true;
this.cacheVisible = false;
/**
* [read-only] The display object container that contains this display object.
* @property parent
* @type DisplayObjectContainer
*/
this.parent = null;
/**
* [read-only] The stage the display object is connected to, or undefined if it is not connected to the stage.
* @property stage
* @type Stage
*/
this.stage = null;
this.worldAlpha = 1;
this.color = [];
this.worldTransform = mat3.identity();
this.localTransform = mat3.identity();
this.dynamic = true;
// chach that puppy!
this._sr = 0;
this._cr = 1;
this.renderable = false;
}
// constructor
PIXI.DisplayObject.constructor = PIXI.DisplayObject;
/**
* @private
*/
PIXI.DisplayObject.prototype.updateTransform = function()
{
// TODO OPTIMIZE THIS!! with dirty
if(this.rotation != this.rotationCache)
{
this.rotationCach = this.rotation;
this._sr = Math.sin(this.rotation);
this._cr = Math.cos(this.rotation);
}
this.localTransform[0] = this._cr * this.scale.x;
this.localTransform[1] = -this._sr * this.scale.y
this.localTransform[3] = this._sr * this.scale.x;
this.localTransform[4] = this._cr * this.scale.y;
///AAARR GETTER SETTTER!
this.localTransform[2] = this.position.x;
this.localTransform[5] = this.position.y;
// TODO optimize?
mat3.multiply(this.localTransform, this.parent.worldTransform, this.worldTransform);
this.worldAlpha = this.alpha * this.parent.worldAlpha;
}
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