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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"><title>vtlib library: vtDynTerrainGeom Class Reference</title><link href="doxygen.css" rel="stylesheet" type="text/css"><link href="tabs.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.4.5 --><div class="tabs"> <ul> <li><a href="index.html"><span>Main Page</span></a></li> <li><a href="modules.html"><span>Modules</span></a></li> <li id="current"><a href="annotated.html"><span>Classes</span></a></li> <li><a href="dirs.html"><span>Directories</span></a></li> </ul></div><div class="tabs"> <ul> <li><a href="annotated.html"><span>Class List</span></a></li> <li><a href="hierarchy.html"><span>Class Hierarchy</span></a></li> <li><a href="functions.html"><span>Class Members</span></a></li> </ul></div><h1>vtDynTerrainGeom Class Reference<br><small>[<a class="el" href="group__dynterr.html">Dynamic Terrain (CLOD)</a>]</small></h1><!-- doxytag: class="vtDynTerrainGeom" --><!-- doxytag: inherits="vtDynGeom,vtHeightFieldGrid3d" -->Inheritance diagram for vtDynTerrainGeom:<p><center><img src="classvtDynTerrainGeom__inherit__graph.png" border="0" usemap="#vtDynTerrainGeom__inherit__map" alt="Inheritance graph"></center><map name="vtDynTerrainGeom__inherit__map"><area href="classCustomTerrain.html" shape="rect" coords="7,455,116,481" alt=""><area href="classDemeterTerrain.html" shape="rect" coords="140,455,255,481" alt=""><area href="classSMTerrain.html" shape="rect" coords="279,455,361,481" alt=""><area href="classSRTerrain.html" shape="rect" coords="385,455,465,481" alt=""><area href="classTVTerrain.html" shape="rect" coords="489,455,569,481" alt=""><area href="classvtDynGeom.html" shape="rect" coords="203,305,296,332" alt=""><area href="classvtGeom.html" shape="rect" coords="215,231,284,257" alt=""><area href="classvtNode.html" shape="rect" coords="217,156,281,183" alt=""><area href="classvtNodeBase.html" shape="rect" coords="203,81,296,108" alt=""><area href="classvtTarget.html" shape="rect" coords="215,7,284,33" alt=""><area doxygen="vtdata.tag:../vtdata/" href="../vtdata/classvtHeightFieldGrid3d.html" shape="rect" coords="320,305,461,332" alt=""><area doxygen="vtdata.tag:../vtdata/" href="../vtdata/classvtHeightField3d.html" shape="rect" coords="333,231,448,257" alt=""><area doxygen="vtdata.tag:../vtdata/" href="../vtdata/classvtHeightField.html" shape="rect" coords="340,156,441,183" alt=""></map><center><font size="2">[<a href="graph_legend.html">legend</a>]</font></center><a href="classvtDynTerrainGeom-members.html">List of all members.</a><hr><a name="_details"></a><h2>Detailed Description</h2>This class provides a framework for implementing any kind of dynamic geometry for a heightfield terrain grid. It is the parent class which contains common fuctionality used by each of the terrain CLOD implementations. <p><table border="0" cellpadding="0" cellspacing="0"><tr><td></td></tr><tr><td colspan="2"><br><h2>Public Member Functions</h2></td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">DTErr </td><td class="memItemRight" valign="bottom"><a class="el" href="classvtDynTerrainGeom.html#3f68a59b3d9fadc4260b5d8e668a1628">BasicInit</a> (const <a class="elRef" doxygen="vtdata.tag:../vtdata/" href="../vtdata/classvtElevationGrid.html">vtElevationGrid</a> *pGrid)</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classvtDynTerrainGeom.html#4ea8424e8f7af83b4c827048d417b029">SetOptions</a> (bool bUseTriStrips, int iBlockArrayDim, int iTextureSize)</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classvtDynTerrainGeom.html#cf10bbd6b3d18f37dfe4e0a1b70ed0ba">SetPolygonTarget</a> (int iPolygonCount)</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="classvtDynTerrainGeom.html#21af65355d78aba48c5c836689e933ee">GetPolygonTarget</a> ()</td></tr><tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="classvtDynTerrainGeom.html#5f047b392a7524e9401a95a00109b4cc">GetNumDrawnTriangles</a> ()</td></tr></table><hr><h2>Member Function Documentation</h2><a class="anchor" name="3f68a59b3d9fadc4260b5d8e668a1628"></a><!-- doxytag: member="vtDynTerrainGeom::BasicInit" ref="3f68a59b3d9fadc4260b5d8e668a1628" args="(const vtElevationGrid *pGrid)" --><p><table class="mdTable" cellpadding="2" cellspacing="0"> <tr> <td class="mdRow"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top">DTErr vtDynTerrainGeom::BasicInit </td> <td class="md" valign="top">( </td> <td class="md" nowrap valign="top">const <a class="elRef" doxygen="vtdata.tag:../vtdata/" href="../vtdata/classvtElevationGrid.html">vtElevationGrid</a> * </td> <td class="mdname1" valign="top" nowrap> <em>pGrid</em> </td> <td class="md" valign="top"> ) </td> <td class="md" nowrap></td> </tr> </table> </td> </tr></table><table cellspacing="5" cellpadding="0" border="0"> <tr> <td> </td> <td><p>Sets up the vtDynTerrainGeom object. The units, extents, height range, grid dimensions and other properties are copied from the supplied elevation grid.<p>This is generally called from the Init() method of a subclass. </td> </tr></table><a class="anchor" name="5f047b392a7524e9401a95a00109b4cc"></a><!-- doxytag: member="vtDynTerrainGeom::GetNumDrawnTriangles" ref="5f047b392a7524e9401a95a00109b4cc" args="()" --><p><table class="mdTable" cellpadding="2" cellspacing="0"> <tr> <td class="mdRow"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top">int vtDynTerrainGeom::GetNumDrawnTriangles </td> <td class="md" valign="top">( </td> <td class="mdname1" valign="top" nowrap> </td> <td class="md" valign="top"> ) </td> <td class="md" nowrap></td> </tr> </table> </td> </tr></table><table cellspacing="5" cellpadding="0" border="0"> <tr> <td> </td> <td><p>Return the number of triangles that were rendered by this dynamic terrain last frame. </td> </tr></table><a class="anchor" name="21af65355d78aba48c5c836689e933ee"></a><!-- doxytag: member="vtDynTerrainGeom::GetPolygonTarget" ref="21af65355d78aba48c5c836689e933ee" args="()" --><p><table class="mdTable" cellpadding="2" cellspacing="0"> <tr> <td class="mdRow"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top">int vtDynTerrainGeom::GetPolygonTarget </td> <td class="md" valign="top">( </td> <td class="mdname1" valign="top" nowrap> </td> <td class="md" valign="top"> ) </td> <td class="md" nowrap></td> </tr> </table> </td> </tr></table><table cellspacing="5" cellpadding="0" border="0"> <tr> <td> </td> <td><p>Get the polygon target, which is the number of polygons (generally triangles) which the CLOD algorithm will try to maintain. </td> </tr></table><a class="anchor" name="4ea8424e8f7af83b4c827048d417b029"></a><!-- doxytag: member="vtDynTerrainGeom::SetOptions" ref="4ea8424e8f7af83b4c827048d417b029" args="(bool bUseTriStrips, int iBlockArrayDim, int iTextureSize)" --><p><table class="mdTable" cellpadding="2" cellspacing="0"> <tr> <td class="mdRow"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top">void vtDynTerrainGeom::SetOptions </td> <td class="md" valign="top">( </td> <td class="md" nowrap valign="top">bool </td> <td class="mdname" nowrap> <em>bUseTriStrips</em>, </td> </tr> <tr> <td class="md" nowrap align="right"></td> <td class="md"></td> <td class="md" nowrap>int </td> <td class="mdname" nowrap> <em>iTPatchDim</em>, </td> </tr> <tr> <td class="md" nowrap align="right"></td> <td class="md"></td> <td class="md" nowrap>int </td> <td class="mdname" nowrap> <em>iTPatchSize</em></td> </tr> <tr> <td class="md"></td> <td class="md">) </td> <td class="md" colspan="2"></td> </tr> </table> </td> </tr></table><table cellspacing="5" cellpadding="0" border="0"> <tr> <td> </td> <td><p>Set the options for this vtDynTerrainGeom: <dl compact><dt><b>Parameters:</b></dt><dd> <table border="0" cellspacing="2" cellpadding="0"> <tr><td valign="top"></td><td valign="top"><em>bUseTriStrips</em> </td><td>True to enable triangle strips; this is only observed by <a class="el" href="classSMTerrain.html">SMTerrain</a>. </td></tr> <tr><td valign="top"></td><td valign="top"><em>iTPatchDim</em> </td><td>The number of texture patches, e.g. 4 indicated a 4x4 grid of patches. </td></tr> <tr><td valign="top"></td><td valign="top"><em>iTPatchSize</em> </td><td>The size of each texture, e.g. 1024. </td></tr> </table></dl> </td> </tr></table><a class="anchor" name="cf10bbd6b3d18f37dfe4e0a1b70ed0ba"></a><!-- doxytag: member="vtDynTerrainGeom::SetPolygonTarget" ref="cf10bbd6b3d18f37dfe4e0a1b70ed0ba" args="(int iPolygonCount)" --><p><table class="mdTable" cellpadding="2" cellspacing="0"> <tr> <td class="mdRow"> <table cellpadding="0" cellspacing="0" border="0"> <tr> <td class="md" nowrap valign="top">void vtDynTerrainGeom::SetPolygonTarget </td> <td class="md" valign="top">( </td> <td class="md" nowrap valign="top">int </td> <td class="mdname1" valign="top" nowrap> <em>iCount</em> </td> <td class="md" valign="top"> ) </td> <td class="md" nowrap><code> [virtual]</code></td> </tr> </table> </td> </tr></table><table cellspacing="5" cellpadding="0" border="0"> <tr> <td> </td> <td><p>Set the polygon target, which is the number of polygons (generally triangles) which the CLOD algorithm will try to maintain. <p>Reimplemented in <a class="el" href="classSRTerrain.html#04baba07f573b9558682038048500bed">SRTerrain</a>. </td> </tr></table><hr size="1"><address style="align: right;"><small>Generated on Mon Jan 14 14:41:00 2008 for vtlib library by <a href="http://www.doxygen.org/index.html"><img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.4.5 </small></address></body></html>⌨️ 快捷键说明
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