pixi.js/docs/files/pixi_extras_Rope.js.html at 0558060de2551b74c1c898ff997ac7c6bc6d6f56

Fork: 0
mark / pixi.js
Find file
Newer
Older
pixi.js / docs / files / pixi_extras_Rope.js.html
Mat Groves on 24 Feb 2013 7 KB Documentation first draft
Raw Blame History
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <title>pixi&#x2F;extras&#x2F;Rope.js - Pixi.js API</title>
    <link rel="stylesheet" href="http:&#x2F;&#x2F;yui.yahooapis.com&#x2F;3.8.0pr2&#x2F;build&#x2F;cssgrids&#x2F;cssgrids-min.css">
    <link rel="stylesheet" href="..&#x2F;assets/vendor/prettify/prettify-min.css">
    <link rel="stylesheet" href="..&#x2F;assets/css/main.css" id="site_styles">
    <link rel="shortcut icon" type="image/png" href="..&#x2F;assets/favicon.png">
    <script src="http:&#x2F;&#x2F;yui.yahooapis.com&#x2F;combo?3.8.0pr2&#x2F;build&#x2F;yui&#x2F;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="..&#x2F;logo_small.png" title="Pixi.js API"></h1>
            
        </div>
        <div class="yui3-u-1-4 version">
            <em>API Docs for: 0.9</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="..&#x2F;classes/AssetLoader.html">AssetLoader</a></li>
            
                <li><a href="..&#x2F;classes/BaseTexture.html">BaseTexture</a></li>
            
                <li><a href="..&#x2F;classes/CanvasRenderer.html">CanvasRenderer</a></li>
            
                <li><a href="..&#x2F;classes/DisplayObject.html">DisplayObject</a></li>
            
                <li><a href="..&#x2F;classes/DisplayObjectContainer.html">DisplayObjectContainer</a></li>
            
                <li><a href="..&#x2F;classes/MovieClip.html">MovieClip</a></li>
            
                <li><a href="..&#x2F;classes/Point.html">Point</a></li>
            
                <li><a href="..&#x2F;classes/Rectangle.html">Rectangle</a></li>
            
                <li><a href="..&#x2F;classes/Sprite.html">Sprite</a></li>
            
                <li><a href="..&#x2F;classes/SpriteSheetLoader.html">SpriteSheetLoader</a></li>
            
                <li><a href="..&#x2F;classes/Stage.html">Stage</a></li>
            
                <li><a href="..&#x2F;classes/Texture.html">Texture</a></li>
            
                <li><a href="..&#x2F;classes/WebGLBatch.html">WebGLBatch</a></li>
            
                <li><a href="..&#x2F;classes/WebGLRenderer.html">WebGLRenderer</a></li>
            
            </ul>

            <ul id="api-modules" class="apis modules">
            
                <li><a href="..&#x2F;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: pixi&#x2F;extras&#x2F;Rope.js</h1>

<div class="file">
    <pre class="code prettyprint linenums">
&#x2F;**
 * @author Mat Groves http:&#x2F;&#x2F;matgroves.com&#x2F;
 *&#x2F;


PIXI.Rope = function(texture, points)
{
	PIXI.Strip.call( this, texture );
	this.points = points;
	
	try
	{
		this.verticies = new Float32Array( points.length * 4);
		this.uvs = new Float32Array( points.length * 4);
		this.colors = new Float32Array(  points.length * 2);
		this.indices = new Uint16Array( points.length * 2);
	}
	catch(error)
	{
		this.verticies = verticies
		
		this.uvs = uvs
		this.colors = colors
		this.indices = indices
	}
	
	this.refresh();
}


&#x2F;&#x2F; constructor
PIXI.Rope.constructor = PIXI.Rope;
PIXI.Rope.prototype = Object.create( PIXI.Strip.prototype );

PIXI.Rope.prototype.refresh = function()
{
	var points = this.points;
	if(points.length &lt; 1)return;
	
	var uvs = this.uvs
	var indices = this.indices;
	var colors = this.colors;
	
	var lastPoint = points[0];
	var nextPoint;
	var perp = {x:0, y:0};
	var point = points[0];
	
	this.count-=0.2;
	
	
	uvs[0] = 0
	uvs[1] = 1
	uvs[2] = 0
	uvs[3] = 1
	
	colors[0] = 1;
	colors[1] = 1;
	
	indices[0] = 0;
	indices[1] = 1;
	
	var total = points.length;
		
	for (var i =  1; i &lt; total; i++) 
	{
		
		var point = points[i];
		var index = i * 4;
		&#x2F;&#x2F; time to do some smart drawing!
		var amount = i&#x2F;(total-1)
		
		if(i%2)
		{
			uvs[index] = amount;
			uvs[index+1] = 0;
			
			uvs[index+2] = amount
			uvs[index+3] = 1
		
		}
		else
		{
			uvs[index] = amount
			uvs[index+1] = 0
			
			uvs[index+2] = amount
			uvs[index+3] = 1
		}
		
		index = i * 2;
		colors[index] = 1;
		colors[index+1] = 1;
		
		index = i * 2;
		indices[index] = index;
		indices[index + 1] = index + 1;
		
		lastPoint = point;
	}
}

PIXI.Rope.prototype.updateTransform = function()
{
	
	var points = this.points;
	if(points.length &lt; 1)return;
	
	var verticies = this.verticies 
	
	var lastPoint = points[0];
	var nextPoint;
	var perp = {x:0, y:0};
	var point = points[0];
	
	this.count-=0.2;
	
	verticies[0] = point.x + perp.x 
	verticies[1] = point.y + perp.y &#x2F;&#x2F;+ 200
	verticies[2] = point.x - perp.x 
	verticies[3] = point.y - perp.y&#x2F;&#x2F;+200
	&#x2F;&#x2F; time to do some smart drawing!
	
	var total = points.length;
		
	for (var i =  1; i &lt; total; i++) 
	{
		
		var point = points[i];
		var index = i * 4;
		
		if(i &lt; points.length-1)
		{
			nextPoint = points[i+1];
		}
		else
		{
			nextPoint = point
		}
		
		perp.y = -(nextPoint.x - lastPoint.x);
		perp.x = nextPoint.y - lastPoint.y;
		
		var ratio = (1 - (i &#x2F; (total-1))) * 10;
				if(ratio &gt; 1)ratio = 1;
				
		var perpLength = Math.sqrt(perp.x * perp.x + perp.y * perp.y);
		var num = this.texture.height&#x2F;2&#x2F;&#x2F;(20 + Math.abs(Math.sin((i + this.count) * 0.3) * 50) )* ratio;
		perp.x &#x2F;= perpLength;
		perp.y &#x2F;= perpLength;
	
		perp.x *= num;
		perp.y *= num;
		
		verticies[index] = point.x + perp.x 
		verticies[index+1] = point.y + perp.y
		verticies[index+2] = point.x - perp.x 
		verticies[index+3] = point.y - perp.y

		lastPoint = point;
	}
	
	PIXI.DisplayObjectContainer.prototype.updateTransform.call( this );
}

PIXI.Rope.prototype.setTexture = function(texture)
{
	&#x2F;&#x2F; stop current texture 
	this.texture = texture;
	this.updateFrame = true;
}





    </pre>
</div>

                    </div>
                </div>
            </div>
        </div>
    </div>
</div>
<script src="..&#x2F;assets/vendor/prettify/prettify-min.js"></script>
<script>prettyPrint();</script>
<script src="..&#x2F;assets/js/yui-prettify.js"></script>
<script src="..&#x2F;assets/../api.js"></script>
<script src="..&#x2F;assets/js/api-filter.js"></script>
<script src="..&#x2F;assets/js/api-list.js"></script>
<script src="..&#x2F;assets/js/api-search.js"></script>
<script src="..&#x2F;assets/js/apidocs.js"></script>
</body>
</html>