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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/1999/REC-html401-19991224/loose.dtd">
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<title>Castle Game Engine: X3DNodes: Class TX3DNodesCache</title>
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<h2>Castle Game Engine</h2><p><a href="introduction.html" class="navigation">Introduction</a></p><p><a href="AllUnits.html" class="navigation">Units</a></p><p><a href="ClassHierarchy.html" class="navigation">Class Hierarchy</a></p><p><a href="AllClasses.html" class="navigation">Classes, Interfaces, Objects and Records</a></p><p><a href="AllTypes.html" class="navigation">Types</a></p><p><a href="AllVariables.html" class="navigation">Variables</a></p><p><a href="AllConstants.html" class="navigation">Constants</a></p><p><a href="AllFunctions.html" class="navigation">Functions and Procedures</a></p><p><a href="AllIdentifiers.html" class="navigation">Identifiers</a></p></td><td class="content">
<a name="TX3DNodesCache"></a><h1 class="cio">Class TX3DNodesCache</h1>
<table class="sections wide_list">
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<td><a class="section" href="#PasDoc-Description">Description</a></td><td><a class="section" href="#PasDoc-Hierarchy">Hierarchy</a></td><td>Fields</td><td><a class="section" href="#PasDoc-Methods">Methods</a></td><td>Properties</td></tr></table>
<a name="PasDoc-Description"></a><h2 class="unit">Unit</h2>
<p class="unitlink">
<a href="X3DNodes.html">X3DNodes</a></p>
<h2 class="declaration">Declaration</h2>
<p class="declaration">
<code>type TX3DNodesCache = class(<a class="normal" href="CastleTextureImages.TTexturesVideosCache.html">TTexturesVideosCache</a>)</code></p>
<h2 class="description">Description</h2>
<p>
Cache for resources not specific to renderer (OpenGL). Includes all <a class="normal" href="CastleTextureImages.TTexturesVideosCache.html">TTexturesVideosCache</a> resources (texture, movie data) and adds cache for 3D models.</p>
<a name="PasDoc-Hierarchy"></a><h2 class="hierarchy">Hierarchy</h2>
<ul class="hierarchy"><li class="ancestor">TObject</li>
<li class="ancestor"><a class="normal" href="CastleVideos.TVideosCache.html">TVideosCache</a></li>
<li class="ancestor"><a class="normal" href="CastleTextureImages.TTexturesVideosCache.html">TTexturesVideosCache</a></li>
<li class="thisitem">TX3DNodesCache</li></ul><h2 class="overview">Overview</h2>
<a name="PasDoc-Methods"></a><h3 class="summary">Methods</h3>
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<td class="itemcode"><code>constructor <b><a href="X3DNodes.TX3DNodesCache.html#Create">Create</a></b>;</code></td>
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<td class="itemcode"><code>destructor <b><a href="X3DNodes.TX3DNodesCache.html#Destroy">Destroy</a></b>; override;</code></td>
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<td class="itemcode"><code>function <b><a href="X3DNodes.TX3DNodesCache.html#Load3D">Load3D</a></b>(const URL: string): <a href="X3DNodes.TX3DRootNode.html">TX3DRootNode</a>;</code></td>
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<td class="itemcode"><code>procedure <b><a href="X3DNodes.TX3DNodesCache.html#Free3D">Free3D</a></b>(var Node: <a href="X3DNodes.TX3DRootNode.html">TX3DRootNode</a>);</code></td>
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<td class="itemcode"><code>function <b><a href="X3DNodes.TX3DNodesCache.html#Empty">Empty</a></b>: boolean; override;</code></td>
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<h2 class="description">Description</h2>
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<td class="itemcode"><a name="Create"></a><code>constructor <b>Create</b>;</code></td>
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<td class="itemcode"><a name="Destroy"></a><code>destructor <b>Destroy</b>; override;</code></td>
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<td class="itemcode"><a name="Load3D"></a><code>function <b>Load3D</b>(const URL: string): <a href="X3DNodes.TX3DRootNode.html">TX3DRootNode</a>;</code></td>
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<p>
Load 3D model, just like <code>Load3D</code> but with a cache. URL must be absolute (not relative).
<p>Note that this should not be used if you plan to modify the model graph (for example by VRML/X3D events). In such case, the cache should not be used, as it would make all the model instances shared. For example, if you inline the same model multiple times, you could not modify one instance independent from another.</p>
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<td class="itemcode"><a name="Free3D"></a><code>procedure <b>Free3D</b>(var Node: <a href="X3DNodes.TX3DRootNode.html">TX3DRootNode</a>);</code></td>
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<tr><td colspan="2">
<p>
Unload previously loaded here 3D model. Node may be <code>Nil</code> (then it's ignored), or something loaded by <a class="normal" href="X3DNodes.TX3DNodesCache.html#Load3D">Load3D</a> (then it's released and changed to <code>Nil</code>).</p>
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<td class="itemcode"><a name="Empty"></a><code>function <b>Empty</b>: boolean; override;</code></td>
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