<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <title>Define a perspective projection transformation</title> </head> <body><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.swf-ortho.html">swf_ortho</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.swf-placeobject.html">swf_placeobject</a></div> <div class="up"><a href="ref.swf.html">SWF Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div><hr /><div id="function.swf-perspective" class="refentry"> <div class="refnamediv"> <h1 class="refname">swf_perspective</h1> <p class="verinfo">(PHP 4)</p><p class="refpurpose"><span class="refname">swf_perspective</span> — <span class="dc-title">Define a perspective projection transformation</span></p> </div> <div class="refsect1 description" id="refsect1-function.swf-perspective-description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type"><span class="type void">void</span></span> <span class="methodname"><strong>swf_perspective</strong></span> ( <span class="methodparam"><span class="type">float</span> <code class="parameter">$fovy</code></span> , <span class="methodparam"><span class="type">float</span> <code class="parameter">$aspect</code></span> , <span class="methodparam"><span class="type">float</span> <code class="parameter">$near</code></span> , <span class="methodparam"><span class="type">float</span> <code class="parameter">$far</code></span> )</div> <p class="para rdfs-comment"> Defines a perspective projection transformation. </p> <blockquote class="note"><p><strong class="note">Note</strong>: <p class="para"> Various distortion artifacts may appear when performing a perspective projection, this is because Flash players only have a two dimensional matrix. Some are not to pretty. </p> </p></blockquote> </div> <div class="refsect1 parameters" id="refsect1-function.swf-perspective-parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><em><code class="parameter">fovy</code></em></span> <dd> <p class="para"> A field-of-view angle in the y direction. </p> </dd> </dt> <dt> <span class="term"><em><code class="parameter">aspect</code></em></span> <dd> <p class="para"> The aspect ratio of the viewport that is being drawn onto. </p> </dd> </dt> <dt> <span class="term"><em><code class="parameter">near</code></em></span> <dd> <p class="para"> The near clipping plane. </p> </dd> </dt> <dt> <span class="term"><em><code class="parameter">far</code></em></span> <dd> <p class="para"> The far clipping plane. </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues" id="refsect1-function.swf-perspective-returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> No value is returned. </p> </div> </div><hr /><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.swf-ortho.html">swf_ortho</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.swf-placeobject.html">swf_placeobject</a></div> <div class="up"><a href="ref.swf.html">SWF Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div></body></html>