/**
 * @author Mat Groves http://matgroves.com/
 */

/**
 * A tiling sprite is a fast way of rendering a tiling image
 *
 * @class TilingSprite
 * @extends DisplayObjectContainer
 * @constructor
 * @param texture {Texture} the texture of the tiling sprite
 * @param width {Number}  the width of the tiling sprite
 * @param height {Number} the height of the tiling sprite
 */
PIXI.TilingSprite = function(texture, width, height)
{
    PIXI.Sprite.call( this, texture);

    this.width = width || 100;
    this.height = height || 100;

    texture.baseTexture._powerOf2 = true;
    
    /**
     * The scaling of the image that is being tiled
     *
     * @property tileScale
     * @type Point
     */
    this.tileScale = new PIXI.Point(1,1);

    /**
     * The offset position of the image that is being tiled
     *
     * @property tilePosition
     * @type Point
     */
    this.tilePosition = new PIXI.Point(0,0);

    this.renderable = true;

    this.blendMode = PIXI.blendModes.NORMAL;
};

// constructor
PIXI.TilingSprite.prototype = Object.create( PIXI.Sprite.prototype );
PIXI.TilingSprite.prototype.constructor = PIXI.TilingSprite;


/**
 * The width of the sprite, setting this will actually modify the scale to acheive the value set
 *
 * @property width
 * @type Number
 */
Object.defineProperty(PIXI.TilingSprite.prototype, 'width', {
    get: function() {
        return this._width
    },
    set: function(value) {
        
        this._width = value;
    }
});

/**
 * The height of the TilingSprite, setting this will actually modify the scale to acheive the value set
 *
 * @property height
 * @type Number
 */
Object.defineProperty(PIXI.TilingSprite.prototype, 'height', {
    get: function() {
        return  this._height
    },
    set: function(value) {
        this._height = value;
    }
});

PIXI.TilingSprite.prototype._renderWebGL = function(renderSession)
{
    if(this.visible === false || this.alpha === 0)return;
    
    if(this.mask || this.filters)
    {
        if(this.mask)
        {
            renderSession.spriteBatch.stop();
            renderSession.maskManager.pushMask(this.mask, renderSession.projection);
            renderSession.spriteBatch.start();
        }

        if(this.filters)
        {    
            renderSession.spriteBatch.flush();
            renderSession.filterManager.pushFilter(this._filterBlock);
        }

        renderSession.spriteBatch.renderTilingSprite(this);

        // simple render children!
        for(var i=0,j=this.children.length; i<j; i++)
        {
            var child = this.children[i];
            child._renderWebGL(renderSession);
        }

        renderSession.spriteBatch.stop();

        if(this.filters)renderSession.filterManager.popFilter();
        if(this.mask)renderSession.maskManager.popMask(renderSession.projection);
        
        renderSession.spriteBatch.start();
    }
    else
    {
        renderSession.spriteBatch.renderTilingSprite(this);
        
        // simple render children!
        for(var i=0,j=this.children.length; i<j; i++)
        {
            var child = this.children[i];
            child._renderWebGL(renderSession);
        }
    }
}

PIXI.TilingSprite.prototype._renderCanvas = function(renderSession)
{
    
}