/**
* @author Mat Groves http://matgroves.com/
*/
/**
* A tiling sprite is a fast way of rendering a tiling image
*
* @class TilingSprite
* @extends Sprite
* @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);
/**
* The width of the tiling sprite
*
* @property width
* @type Number
*/
this._width = width || 128;
/**
* The height of the tiling sprite
*
* @property height
* @type Number
*/
this._height = height || 128;
/**
* The scaling of the image that is being tiled
*
* @property tileScale
* @type Point
*/
this.tileScale = new PIXI.Point(1, 1);
/**
* A point that represents the scale of the texture object
*
* @property tileScaleOffset
* @type Point
*/
this.tileScaleOffset = new PIXI.Point(1, 1);
/**
* The offset position of the image that is being tiled
*
* @property tilePosition
* @type Point
*/
this.tilePosition = new PIXI.Point();
/**
* Whether this sprite is renderable or not
*
* @property renderable
* @type Boolean
* @default true
*/
this.renderable = true;
/**
* The tint applied to the sprite. This is a hex value
*
* @property tint
* @type Number
* @default 0xFFFFFF
*/
this.tint = 0xFFFFFF;
/**
* If enabled a green rectangle will be drawn behind the generated tiling texture, allowing you to visually
* debug the texture being used.
*
* @property textureDebug
* @type Boolean
*/
this.textureDebug = false;
/**
* The blend mode to be applied to the sprite
*
* @property blendMode
* @type Number
* @default PIXI.blendModes.NORMAL;
*/
this.blendMode = PIXI.blendModes.NORMAL;
/**
* The CanvasBuffer object that the tiled texture is drawn to.
*
* @property canvasBuffer
* @type PIXI.CanvasBuffer
*/
this.canvasBuffer = null;
/**
* An internal Texture object that holds the tiling texture that was generated from TilingSprite.texture.
*
* @property tilingTexture
* @type PIXI.Texture
*/
this.tilingTexture = null;
/**
* The Context fill pattern that is used to draw the TilingSprite in Canvas mode only (will be null in WebGL).
*
* @property tilePattern
* @type PIXI.Texture
*/
this.tilePattern = null;
/**
* If true the TilingSprite will run generateTexture on its **next** render pass.
* This is set by the likes of Phaser.LoadTexture.setFrame.
*
* @property refreshTexture
* @type Boolean
* @default true
*/
this.refreshTexture = true;
this.frameWidth = 0;
this.frameHeight = 0;
};
PIXI.TilingSprite.prototype = Object.create(PIXI.Sprite.prototype);
PIXI.TilingSprite.prototype.constructor = PIXI.TilingSprite;
PIXI.TilingSprite.prototype.setTexture = function(texture)
{
if (this.texture !== texture)
{
this.texture = texture;
this.refreshTexture = true;
this.cachedTint = 0xFFFFFF;
}
};
/**
* Renders the object using the WebGL renderer
*
* @method _renderWebGL
* @param renderSession {RenderSession}
* @private
*/
PIXI.TilingSprite.prototype._renderWebGL = function(renderSession)
{
if (this.visible === false || this.alpha === 0)
{
return;
}
if (this._mask)
{
renderSession.spriteBatch.stop();
renderSession.maskManager.pushMask(this.mask, renderSession);
renderSession.spriteBatch.start();
}
if (this._filters)
{
renderSession.spriteBatch.flush();
renderSession.filterManager.pushFilter(this._filterBlock);
}
if (this.refreshTexture)
{
this.generateTilingTexture(true);
if (this.tilingTexture)
{
if (this.tilingTexture.needsUpdate)
{
renderSession.renderer.updateTexture(this.tilingTexture.baseTexture);
this.tilingTexture.needsUpdate = false;
}
}
else
{
return;
}
}
renderSession.spriteBatch.renderTilingSprite(this);
for (var i = 0; i < this.children.length; i++)
{
this.children[i]._renderWebGL(renderSession);
}
renderSession.spriteBatch.stop();
if (this._filters)
{
renderSession.filterManager.popFilter();
}
if (this._mask)
{
renderSession.maskManager.popMask(this._mask, renderSession);
}
renderSession.spriteBatch.start();
};
/**
* Renders the object using the Canvas renderer
*
* @method _renderCanvas
* @param renderSession {RenderSession}
* @private
*/
PIXI.TilingSprite.prototype._renderCanvas = function(renderSession)
{
if (this.visible === false || this.alpha === 0)
{
return;
}
var context = renderSession.context;
if (this._mask)
{
renderSession.maskManager.pushMask(this._mask, renderSession);
}
context.globalAlpha = this.worldAlpha;
var wt = this.worldTransform;
var resolution = renderSession.resolution;
context.setTransform(wt.a * resolution,
wt.b * resolution,
wt.c * resolution,
wt.d * resolution,
wt.tx * resolution,
wt.ty * resolution);
if (this.refreshTexture)
{
this.generateTilingTexture(false);
if (this.tilingTexture)
{
this.tilePattern = context.createPattern(this.tilingTexture.baseTexture.source, 'repeat');
}
else
{
return;
}
}
var sessionBlendMode = renderSession.currentBlendMode;
// Check blend mode
if (this.blendMode !== renderSession.currentBlendMode)
{
renderSession.currentBlendMode = this.blendMode;
context.globalCompositeOperation = PIXI.blendModesCanvas[renderSession.currentBlendMode];
}
var tilePosition = this.tilePosition;
var tileScale = this.tileScale;
tilePosition.x %= this.tilingTexture.baseTexture.width;
tilePosition.y %= this.tilingTexture.baseTexture.height;
// Translate
context.scale(tileScale.x, tileScale.y);
context.translate(tilePosition.x + (this.anchor.x * -this._width), tilePosition.y + (this.anchor.y * -this._height));
context.fillStyle = this.tilePattern;
var tx = -tilePosition.x;
var ty = -tilePosition.y;
var tw = this._width / tileScale.x;
var th = this._height / tileScale.y;
// Allow for pixel rounding
if (renderSession.roundPixels)
{
tx | 0;
ty | 0;
tw | 0;
th | 0;
}
context.fillRect(tx, ty, tw, th);
// Translate back again
context.scale(1 / tileScale.x, 1 / tileScale.y);
context.translate(-tilePosition.x + (this.anchor.x * this._width), -tilePosition.y + (this.anchor.y * this._height));
if (this._mask)
{
renderSession.maskManager.popMask(renderSession);
}
for (var i = 0; i < this.children.length; i++)
{
this.children[i]._renderCanvas(renderSession);
}
// Reset blend mode
if (sessionBlendMode !== this.blendMode)
{
renderSession.currentBlendMode = sessionBlendMode;
context.globalCompositeOperation = PIXI.blendModesCanvas[sessionBlendMode];
}
};
/**
* When the texture is updated, this event will fire to update the scale and frame
*
* @method onTextureUpdate
* @param event
* @private
*/
PIXI.TilingSprite.prototype.onTextureUpdate = function()
{
// overriding the sprite version of this!
};
/**
*
* @method generateTilingTexture
*
* @param forcePowerOfTwo {Boolean} Whether we want to force the texture to be a power of two
*/
PIXI.TilingSprite.prototype.generateTilingTexture = function(forcePowerOfTwo)
{
if (!this.texture.baseTexture.hasLoaded)
{
return;
}
var texture = this.texture;
var frame = texture.frame;
var targetWidth = this._frame.sourceSizeW;
var targetHeight = this._frame.sourceSizeH;
var dx = 0;
var dy = 0;
if (this._frame.trimmed)
{
dx = this._frame.spriteSourceSizeX;
dy = this._frame.spriteSourceSizeY;
}
if (forcePowerOfTwo)
{
targetWidth = PIXI.getNextPowerOfTwo(targetWidth);
targetHeight = PIXI.getNextPowerOfTwo(targetHeight);
}
if (this.canvasBuffer)
{
this.canvasBuffer.resize(targetWidth, targetHeight);
this.tilingTexture.baseTexture.width = targetWidth;
this.tilingTexture.baseTexture.height = targetHeight;
this.tilingTexture.needsUpdate = true;
}
else
{
this.canvasBuffer = new PIXI.CanvasBuffer(targetWidth, targetHeight);
this.tilingTexture = PIXI.Texture.fromCanvas(this.canvasBuffer.canvas);
this.tilingTexture = PIXI.Texture.fromCanvas(this.canvasBuffer.canvas);
this.tilingTexture.isTiling = true;
this.tilingTexture.needsUpdate = true;
}
if (this.textureDebug)
{
this.canvasBuffer.context.strokeStyle = '#00ff00';
this.canvasBuffer.context.strokeRect(0, 0, targetWidth, targetHeight);
}
// If a sprite sheet we need this:
var w = texture.crop.width;
var h = texture.crop.height;
if (w !== targetWidth || h !== targetHeight)
{
w = targetWidth;
h = targetHeight;
}
this.canvasBuffer.context.drawImage(texture.baseTexture.source,
texture.crop.x,
texture.crop.y,
texture.crop.width,
texture.crop.height,
dx,
dy,
w,
h);
this.tileScaleOffset.x = frame.width / targetWidth;
this.tileScaleOffset.y = frame.height / targetHeight;
this.refreshTexture = false;
this.tilingTexture.baseTexture._powerOf2 = true;
};
/**
* Returns the framing rectangle of the sprite as a PIXI.Rectangle object
*
* @method getBounds
* @return {Rectangle} the framing rectangle
*/
PIXI.TilingSprite.prototype.getBounds = function()
{
var width = this._width;
var height = this._height;
var w0 = width * (1-this.anchor.x);
var w1 = width * -this.anchor.x;
var h0 = height * (1-this.anchor.y);
var h1 = height * -this.anchor.y;
var worldTransform = this.worldTransform;
var a = worldTransform.a;
var b = worldTransform.b;
var c = worldTransform.c;
var d = worldTransform.d;
var tx = worldTransform.tx;
var ty = worldTransform.ty;
var x1 = a * w1 + c * h1 + tx;
var y1 = d * h1 + b * w1 + ty;
var x2 = a * w0 + c * h1 + tx;
var y2 = d * h1 + b * w0 + ty;
var x3 = a * w0 + c * h0 + tx;
var y3 = d * h0 + b * w0 + ty;
var x4 = a * w1 + c * h0 + tx;
var y4 = d * h0 + b * w1 + ty;
var maxX = -Infinity;
var maxY = -Infinity;
var minX = Infinity;
var minY = Infinity;
minX = x1 < minX ? x1 : minX;
minX = x2 < minX ? x2 : minX;
minX = x3 < minX ? x3 : minX;
minX = x4 < minX ? x4 : minX;
minY = y1 < minY ? y1 : minY;
minY = y2 < minY ? y2 : minY;
minY = y3 < minY ? y3 : minY;
minY = y4 < minY ? y4 : minY;
maxX = x1 > maxX ? x1 : maxX;
maxX = x2 > maxX ? x2 : maxX;
maxX = x3 > maxX ? x3 : maxX;
maxX = x4 > maxX ? x4 : maxX;
maxY = y1 > maxY ? y1 : maxY;
maxY = y2 > maxY ? y2 : maxY;
maxY = y3 > maxY ? y3 : maxY;
maxY = y4 > maxY ? y4 : maxY;
var bounds = this._bounds;
bounds.x = minX;
bounds.width = maxX - minX;
bounds.y = minY;
bounds.height = maxY - minY;
// store a reference so that if this function gets called again in the render cycle we do not have to recalculate
this._currentBounds = bounds;
return bounds;
};
PIXI.TilingSprite.prototype.destroy = function () {
PIXI.Sprite.prototype.destroy.call(this);
this.tileScale = null;
this.tileScaleOffset = null;
this.tilePosition = null;
if (this.tilingTexture)
{
this.tilingTexture.destroy(true);
this.tilingTexture = null;
}
};
/**
* The width of the sprite, setting this will actually modify the scale to achieve 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 achieve the value set
*
* @property height
* @type Number
*/
Object.defineProperty(PIXI.TilingSprite.prototype, 'height', {
get: function() {
return this._height;
},
set: function(value) {
this._height = value;
}
});
