<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>src/pixi/extras/Strip.js - pixi.js</title>
<link rel="stylesheet" href="http://yui.yahooapis.com/3.9.1/build/cssgrids/cssgrids-min.css">
<link rel="stylesheet" href="../assets/vendor/prettify/prettify-min.css">
<link rel="stylesheet" href="../assets/css/main.css" id="site_styles">
<link rel="shortcut icon" type="image/png" href="../assets/favicon.png">
<script src="http://yui.yahooapis.com/combo?3.9.1/build/yui/yui-min.js"></script>
</head>
<body class="yui3-skin-sam">
<div id="doc">
<div id="hd" class="yui3-g header">
<div class="yui3-u-3-4">
<h1><img src="http://www.goodboydigital.com/pixijs/logo_small.png" title="pixi.js"></h1>
</div>
<div class="yui3-u-1-4 version">
<em>API Docs for: 2.1.0</em>
</div>
</div>
<div id="bd" class="yui3-g">
<div class="yui3-u-1-4">
<div id="docs-sidebar" class="sidebar apidocs">
<div id="api-list">
<h2 class="off-left">APIs</h2>
<div id="api-tabview" class="tabview">
<ul class="tabs">
<li><a href="#api-classes">Classes</a></li>
<li><a href="#api-modules">Modules</a></li>
</ul>
<div id="api-tabview-filter">
<input type="search" id="api-filter" placeholder="Type to filter APIs">
</div>
<div id="api-tabview-panel">
<ul id="api-classes" class="apis classes">
<li><a href="../classes/AbstractFilter.html">AbstractFilter</a></li>
<li><a href="../classes/AjaxRequest.html">AjaxRequest</a></li>
<li><a href="../classes/AlphaMaskFilter.html">AlphaMaskFilter</a></li>
<li><a href="../classes/AsciiFilter.html">AsciiFilter</a></li>
<li><a href="../classes/AssetLoader.html">AssetLoader</a></li>
<li><a href="../classes/AtlasLoader.html">AtlasLoader</a></li>
<li><a href="../classes/autoDetectRecommendedRenderer.html">autoDetectRecommendedRenderer</a></li>
<li><a href="../classes/autoDetectRenderer.html">autoDetectRenderer</a></li>
<li><a href="../classes/BaseTexture.html">BaseTexture</a></li>
<li><a href="../classes/BitmapFontLoader.html">BitmapFontLoader</a></li>
<li><a href="../classes/BitmapText.html">BitmapText</a></li>
<li><a href="../classes/BlurFilter.html">BlurFilter</a></li>
<li><a href="../classes/BlurXFilter.html">BlurXFilter</a></li>
<li><a href="../classes/BlurYFilter.html">BlurYFilter</a></li>
<li><a href="../classes/CanvasBuffer.html">CanvasBuffer</a></li>
<li><a href="../classes/CanvasGraphics.html">CanvasGraphics</a></li>
<li><a href="../classes/CanvasMaskManager.html">CanvasMaskManager</a></li>
<li><a href="../classes/CanvasRenderer.html">CanvasRenderer</a></li>
<li><a href="../classes/CanvasTinter.html">CanvasTinter</a></li>
<li><a href="../classes/Circle.html">Circle</a></li>
<li><a href="../classes/ColorMatrixFilter.html">ColorMatrixFilter</a></li>
<li><a href="../classes/ColorStepFilter.html">ColorStepFilter</a></li>
<li><a href="../classes/ComplexPrimitiveShader.html">ComplexPrimitiveShader</a></li>
<li><a href="../classes/ConvolutionFilter.html">ConvolutionFilter</a></li>
<li><a href="../classes/CrossHatchFilter.html">CrossHatchFilter</a></li>
<li><a href="../classes/DisplacementFilter.html">DisplacementFilter</a></li>
<li><a href="../classes/DisplayObject.html">DisplayObject</a></li>
<li><a href="../classes/DisplayObjectContainer.html">DisplayObjectContainer</a></li>
<li><a href="../classes/DotScreenFilter.html">DotScreenFilter</a></li>
<li><a href="../classes/Ellipse.html">Ellipse</a></li>
<li><a href="../classes/Event.html">Event</a></li>
<li><a href="../classes/EventTarget.html">EventTarget</a></li>
<li><a href="../classes/FilterBlock.html">FilterBlock</a></li>
<li><a href="../classes/FilterTexture.html">FilterTexture</a></li>
<li><a href="../classes/Graphics.html">Graphics</a></li>
<li><a href="../classes/GraphicsData.html">GraphicsData</a></li>
<li><a href="../classes/GrayFilter.html">GrayFilter</a></li>
<li><a href="../classes/ImageLoader.html">ImageLoader</a></li>
<li><a href="../classes/InteractionData.html">InteractionData</a></li>
<li><a href="../classes/InteractionManager.html">InteractionManager</a></li>
<li><a href="../classes/InvertFilter.html">InvertFilter</a></li>
<li><a href="../classes/JsonLoader.html">JsonLoader</a></li>
<li><a href="../classes/Matrix.html">Matrix</a></li>
<li><a href="../classes/MovieClip.html">MovieClip</a></li>
<li><a href="../classes/NoiseFilter.html">NoiseFilter</a></li>
<li><a href="../classes/NormalMapFilter.html">NormalMapFilter</a></li>
<li><a href="../classes/PixelateFilter.html">PixelateFilter</a></li>
<li><a href="../classes/PixiFastShader.html">PixiFastShader</a></li>
<li><a href="../classes/PixiShader.html">PixiShader</a></li>
<li><a href="../classes/Point.html">Point</a></li>
<li><a href="../classes/Polygon.html">Polygon</a></li>
<li><a href="../classes/PolyK.html">PolyK</a></li>
<li><a href="../classes/PrimitiveShader.html">PrimitiveShader</a></li>
<li><a href="../classes/Rectangle.html">Rectangle</a></li>
<li><a href="../classes/RenderTexture.html">RenderTexture</a></li>
<li><a href="../classes/RGBSplitFilter.html">RGBSplitFilter</a></li>
<li><a href="../classes/Rope.html">Rope</a></li>
<li><a href="../classes/Rounded Rectangle.html">Rounded Rectangle</a></li>
<li><a href="../classes/SepiaFilter.html">SepiaFilter</a></li>
<li><a href="../classes/SmartBlurFilter.html">SmartBlurFilter</a></li>
<li><a href="../classes/Spine.html">Spine</a></li>
<li><a href="../classes/SpineLoader.html">SpineLoader</a></li>
<li><a href="../classes/Sprite.html">Sprite</a></li>
<li><a href="../classes/SpriteBatch.html">SpriteBatch</a></li>
<li><a href="../classes/SpriteSheetLoader.html">SpriteSheetLoader</a></li>
<li><a href="../classes/Stage.html">Stage</a></li>
<li><a href="../classes/Strip.html">Strip</a></li>
<li><a href="../classes/StripShader.html">StripShader</a></li>
<li><a href="../classes/Text.html">Text</a></li>
<li><a href="../classes/Texture.html">Texture</a></li>
<li><a href="../classes/TilingSprite.html">TilingSprite</a></li>
<li><a href="../classes/TiltShiftFilter.html">TiltShiftFilter</a></li>
<li><a href="../classes/TiltShiftXFilter.html">TiltShiftXFilter</a></li>
<li><a href="../classes/TiltShiftYFilter.html">TiltShiftYFilter</a></li>
<li><a href="../classes/TwistFilter.html">TwistFilter</a></li>
<li><a href="../classes/WebGLBlendModeManager.html">WebGLBlendModeManager</a></li>
<li><a href="../classes/WebGLFastSpriteBatch.html">WebGLFastSpriteBatch</a></li>
<li><a href="../classes/WebGLFilterManager.html">WebGLFilterManager</a></li>
<li><a href="../classes/WebGLGraphics.html">WebGLGraphics</a></li>
<li><a href="../classes/WebGLGraphicsData.html">WebGLGraphicsData</a></li>
<li><a href="../classes/WebGLMaskManager.html">WebGLMaskManager</a></li>
<li><a href="../classes/WebGLRenderer.html">WebGLRenderer</a></li>
<li><a href="../classes/WebGLShaderManager.html">WebGLShaderManager</a></li>
<li><a href="../classes/WebGLSpriteBatch.html">WebGLSpriteBatch</a></li>
<li><a href="../classes/WebGLStencilManager.html">WebGLStencilManager</a></li>
</ul>
<ul id="api-modules" class="apis modules">
<li><a href="../modules/PIXI.html">PIXI</a></li>
</ul>
</div>
</div>
</div>
</div>
</div>
<div class="yui3-u-3-4">
<div id="api-options">
Show:
<label for="api-show-inherited">
<input type="checkbox" id="api-show-inherited" checked>
Inherited
</label>
<label for="api-show-protected">
<input type="checkbox" id="api-show-protected">
Protected
</label>
<label for="api-show-private">
<input type="checkbox" id="api-show-private">
Private
</label>
<label for="api-show-deprecated">
<input type="checkbox" id="api-show-deprecated">
Deprecated
</label>
</div>
<div class="apidocs">
<div id="docs-main">
<div class="content">
<h1 class="file-heading">File: src/pixi/extras/Strip.js</h1>
<div class="file">
<pre class="code prettyprint linenums">
/**
* @author Mat Groves http://matgroves.com/
*/
/**
*
* @class Strip
* @extends DisplayObjectContainer
* @constructor
* @param texture {Texture} The texture to use
* @param width {Number} the width
* @param height {Number} the height
*
*/
PIXI.Strip = function(texture)
{
PIXI.DisplayObjectContainer.call( this );
/**
* The texture of the strip
*
* @property texture
* @type Texture
*/
this.texture = texture;
// set up the main bits..
this.uvs = new PIXI.Float32Array([0, 1,
1, 1,
1, 0,
0, 1]);
this.verticies = new PIXI.Float32Array([0, 0,
100, 0,
100, 100,
0, 100]);
this.colors = new PIXI.Float32Array([1, 1, 1, 1]);
this.indices = new PIXI.Uint16Array([0, 1, 2, 3]);
/**
* Whether the strip is dirty or not
*
* @property dirty
* @type Boolean
*/
this.dirty = true;
/**
* if you need a padding, not yet implemented
*
* @property padding
* @type Number
*/
this.padding = 0;
// NYI, TODO padding ?
};
// constructor
PIXI.Strip.prototype = Object.create(PIXI.DisplayObjectContainer.prototype);
PIXI.Strip.prototype.constructor = PIXI.Strip;
PIXI.Strip.prototype._renderWebGL = function(renderSession)
{
// if the sprite is not visible or the alpha is 0 then no need to render this element
if(!this.visible || this.alpha <= 0)return;
// render triangle strip..
renderSession.spriteBatch.stop();
// init! init!
if(!this._vertexBuffer)this._initWebGL(renderSession);
renderSession.shaderManager.setShader(renderSession.shaderManager.stripShader);
this._renderStrip(renderSession);
///renderSession.shaderManager.activateDefaultShader();
renderSession.spriteBatch.start();
//TODO check culling
};
PIXI.Strip.prototype._initWebGL = function(renderSession)
{
// build the strip!
var gl = renderSession.gl;
this._vertexBuffer = gl.createBuffer();
this._indexBuffer = gl.createBuffer();
this._uvBuffer = gl.createBuffer();
this._colorBuffer = gl.createBuffer();
gl.bindBuffer(gl.ARRAY_BUFFER, this._vertexBuffer);
gl.bufferData(gl.ARRAY_BUFFER, this.verticies, gl.DYNAMIC_DRAW);
gl.bindBuffer(gl.ARRAY_BUFFER, this._uvBuffer);
gl.bufferData(gl.ARRAY_BUFFER, this.uvs, gl.STATIC_DRAW);
gl.bindBuffer(gl.ARRAY_BUFFER, this._colorBuffer);
gl.bufferData(gl.ARRAY_BUFFER, this.colors, gl.STATIC_DRAW);
gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, this._indexBuffer);
gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, this.indices, gl.STATIC_DRAW);
};
PIXI.Strip.prototype._renderStrip = function(renderSession)
{
var gl = renderSession.gl;
var projection = renderSession.projection,
offset = renderSession.offset,
shader = renderSession.shaderManager.stripShader;
// gl.uniformMatrix4fv(shaderProgram.mvMatrixUniform, false, mat4Real);
gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA);
// set uniforms
gl.uniformMatrix3fv(shader.translationMatrix, false, this.worldTransform.toArray(true));
gl.uniform2f(shader.projectionVector, projection.x, -projection.y);
gl.uniform2f(shader.offsetVector, -offset.x, -offset.y);
gl.uniform1f(shader.alpha, this.worldAlpha);
if(!this.dirty)
{
gl.bindBuffer(gl.ARRAY_BUFFER, this._vertexBuffer);
gl.bufferSubData(gl.ARRAY_BUFFER, 0, this.verticies);
gl.vertexAttribPointer(shader.aVertexPosition, 2, gl.FLOAT, false, 0, 0);
// update the uvs
gl.bindBuffer(gl.ARRAY_BUFFER, this._uvBuffer);
gl.vertexAttribPointer(shader.aTextureCoord, 2, gl.FLOAT, false, 0, 0);
gl.activeTexture(gl.TEXTURE0);
// check if a texture is dirty..
if(this.texture.baseTexture._dirty[gl.id])
{
renderSession.renderer.updateTexture(this.texture.baseTexture);
}
else
{
// bind the current texture
gl.bindTexture(gl.TEXTURE_2D, this.texture.baseTexture._glTextures[gl.id]);
}
// dont need to upload!
gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, this._indexBuffer);
}
else
{
this.dirty = false;
gl.bindBuffer(gl.ARRAY_BUFFER, this._vertexBuffer);
gl.bufferData(gl.ARRAY_BUFFER, this.verticies, gl.STATIC_DRAW);
gl.vertexAttribPointer(shader.aVertexPosition, 2, gl.FLOAT, false, 0, 0);
// update the uvs
gl.bindBuffer(gl.ARRAY_BUFFER, this._uvBuffer);
gl.bufferData(gl.ARRAY_BUFFER, this.uvs, gl.STATIC_DRAW);
gl.vertexAttribPointer(shader.aTextureCoord, 2, gl.FLOAT, false, 0, 0);
gl.activeTexture(gl.TEXTURE0);
// check if a texture is dirty..
if(this.texture.baseTexture._dirty[gl.id])
{
renderSession.renderer.updateTexture(this.texture.baseTexture);
}
else
{
gl.bindTexture(gl.TEXTURE_2D, this.texture.baseTexture._glTextures[gl.id]);
}
// dont need to upload!
gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, this._indexBuffer);
gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, this.indices, gl.STATIC_DRAW);
}
//console.log(gl.TRIANGLE_STRIP)
//
//
gl.drawElements(gl.TRIANGLE_STRIP, this.indices.length, gl.UNSIGNED_SHORT, 0);
};
PIXI.Strip.prototype._renderCanvas = function(renderSession)
{
var context = renderSession.context;
var transform = this.worldTransform;
if (renderSession.roundPixels)
{
context.setTransform(transform.a, transform.b, transform.c, transform.d, transform.tx | 0, transform.ty | 0);
}
else
{
context.setTransform(transform.a, transform.b, transform.c, transform.d, transform.tx, transform.ty);
}
var strip = this;
// draw triangles!!
var verticies = strip.verticies;
var uvs = strip.uvs;
var length = verticies.length/2;
this.count++;
for (var i = 0; i < length-2; i++)
{
// draw some triangles!
var index = i*2;
var x0 = verticies[index], x1 = verticies[index+2], x2 = verticies[index+4];
var y0 = verticies[index+1], y1 = verticies[index+3], y2 = verticies[index+5];
if(this.padding > 0)
{
var centerX = (x0 + x1 + x2)/3;
var centerY = (y0 + y1 + y2)/3;
var normX = x0 - centerX;
var normY = y0 - centerY;
var dist = Math.sqrt( normX * normX + normY * normY );
x0 = centerX + (normX / dist) * (dist + 3);
y0 = centerY + (normY / dist) * (dist + 3);
//
normX = x1 - centerX;
normY = y1 - centerY;
dist = Math.sqrt( normX * normX + normY * normY );
x1 = centerX + (normX / dist) * (dist + 3);
y1 = centerY + (normY / dist) * (dist + 3);
normX = x2 - centerX;
normY = y2 - centerY;
dist = Math.sqrt( normX * normX + normY * normY );
x2 = centerX + (normX / dist) * (dist + 3);
y2 = centerY + (normY / dist) * (dist + 3);
}
var u0 = uvs[index] * strip.texture.width, u1 = uvs[index+2] * strip.texture.width, u2 = uvs[index+4]* strip.texture.width;
var v0 = uvs[index+1]* strip.texture.height, v1 = uvs[index+3] * strip.texture.height, v2 = uvs[index+5]* strip.texture.height;
context.save();
context.beginPath();
context.moveTo(x0, y0);
context.lineTo(x1, y1);
context.lineTo(x2, y2);
context.closePath();
context.clip();
// Compute matrix transform
var delta = u0*v1 + v0*u2 + u1*v2 - v1*u2 - v0*u1 - u0*v2;
var deltaA = x0*v1 + v0*x2 + x1*v2 - v1*x2 - v0*x1 - x0*v2;
var deltaB = u0*x1 + x0*u2 + u1*x2 - x1*u2 - x0*u1 - u0*x2;
var deltaC = u0*v1*x2 + v0*x1*u2 + x0*u1*v2 - x0*v1*u2 - v0*u1*x2 - u0*x1*v2;
var deltaD = y0*v1 + v0*y2 + y1*v2 - v1*y2 - v0*y1 - y0*v2;
var deltaE = u0*y1 + y0*u2 + u1*y2 - y1*u2 - y0*u1 - u0*y2;
var deltaF = u0*v1*y2 + v0*y1*u2 + y0*u1*v2 - y0*v1*u2 - v0*u1*y2 - u0*y1*v2;
context.transform(deltaA / delta, deltaD / delta,
deltaB / delta, deltaE / delta,
deltaC / delta, deltaF / delta);
context.drawImage(strip.texture.baseTexture.source, 0, 0);
context.restore();
}
};
/**
* Renders a flat strip
*
* @method renderStripFlat
* @param strip {Strip} The Strip to render
* @private
*/
PIXI.Strip.prototype.renderStripFlat = function(strip)
{
var context = this.context;
var verticies = strip.verticies;
var length = verticies.length/2;
this.count++;
context.beginPath();
for (var i=1; i < length-2; i++)
{
// draw some triangles!
var index = i*2;
var x0 = verticies[index], x1 = verticies[index+2], x2 = verticies[index+4];
var y0 = verticies[index+1], y1 = verticies[index+3], y2 = verticies[index+5];
context.moveTo(x0, y0);
context.lineTo(x1, y1);
context.lineTo(x2, y2);
}
context.fillStyle = "#FF0000";
context.fill();
context.closePath();
};
/*
PIXI.Strip.prototype.setTexture = function(texture)
{
//TODO SET THE TEXTURES
//TODO VISIBILITY
// stop current texture
this.texture = texture;
this.width = texture.frame.width;
this.height = texture.frame.height;
this.updateFrame = true;
};
*/
/**
* When the texture is updated, this event will fire to update the scale and frame
*
* @method onTextureUpdate
* @param event
* @private
*/
PIXI.Strip.prototype.onTextureUpdate = function()
{
this.updateFrame = true;
};
</pre>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<script src="../assets/vendor/prettify/prettify-min.js"></script>
<script>prettyPrint();</script>
<script src="../assets/js/yui-prettify.js"></script>
<script src="../assets/../api.js"></script>
<script src="../assets/js/api-filter.js"></script>
<script src="../assets/js/api-list.js"></script>
<script src="../assets/js/api-search.js"></script>
<script src="../assets/js/apidocs.js"></script>
</body>
</html>
