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<hr><h1>OgreTerrainRenderable.cpp</h1><a href="OgreTerrainRenderable_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001 <font class="comment">/***************************************************************************</font>
00002 <font class="comment">terrainrenderable.cpp - description</font>
00003 <font class="comment">-------------------</font>
00004 <font class="comment">begin : Sat Oct 5 2002</font>
00005 <font class="comment">copyright : (C) 2002 by Jon Anderson</font>
00006 <font class="comment">email : janders@users.sf.net</font>
00007 <font class="comment">***************************************************************************/</font>
00008
00009 <font class="comment">/***************************************************************************</font>
00010 <font class="comment">* *</font>
00011 <font class="comment">* This program is free software; you can redistribute it and/or modify *</font>
00012 <font class="comment">* it under the terms of the GNU Lesser General Public License as published by *</font>
00013 <font class="comment">* the Free Software Foundation; either version 2 of the License, or *</font>
00014 <font class="comment">* (at your option) any later version. *</font>
00015 <font class="comment">* *</font>
00016 <font class="comment">***************************************************************************/</font>
00017
00018 <font class="preprocessor">#include "<a class="code" href="OgreTerrainRenderable_8h.html">OgreTerrainRenderable.h</a>"</font>
00019 <font class="preprocessor">#include <<a class="code" href="OgreSceneNode_8h.html">OgreSceneNode.h</a>></font>
00020 <font class="preprocessor">#include <<a class="code" href="OgreRenderQueue_8h.html">OgreRenderQueue.h</a>></font>
00021 <font class="preprocessor">#include <<a class="code" href="OgreRenderOperation_8h.html">OgreRenderOperation.h</a>></font>
00022 <font class="preprocessor">#include <<a class="code" href="OgreCamera_8h.html">OgreCamera.h</a>></font>
00023 <font class="preprocessor">#include <<a class="code" href="OgreRoot_8h.html">OgreRoot.h</a>></font>
00024
00025
00026 <font class="keyword">namespace </font>Ogre
00027 {
<a name="l00028"></a><a class="code" href="OgreTerrainRenderable_8cpp.html#a0">00028</a> <font class="preprocessor">#define POSITION_BINDING 0</font>
<a name="l00029"></a><a class="code" href="OgreTerrainRenderable_8cpp.html#a1">00029</a> <font class="preprocessor"></font><font class="preprocessor">#define NORMAL_BINDING 1</font>
<a name="l00030"></a><a class="code" href="OgreTerrainRenderable_8cpp.html#a2">00030</a> <font class="preprocessor"></font><font class="preprocessor">#define TEXCOORD_BINDING 2</font>
<a name="l00031"></a><a class="code" href="OgreTerrainRenderable_8cpp.html#a3">00031</a> <font class="preprocessor"></font><font class="preprocessor">#define COLOUR_BINDING 3</font>
00032 <font class="preprocessor"></font>
<a name="l00033"></a><a class="code" href="namespaceOgre.html#a484">00033</a> <a class="code" href="classOgre_1_1TerrainBufferCache.html">TerrainBufferCache</a> <a class="code" href="namespaceOgre.html#a484">gIndexCache</a>;
00034
<a name="l00035"></a><a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablep0">00035</a> size_t TerrainRenderable::mRenderedTris = 0;
00036
<a name="l00037"></a><a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableq0">00037</a> <a class="code" href="classOgre_1_1String.html">String</a> TerrainRenderable::mType = <font class="stringliteral">"TerrainMipMap"</font>;
00038
<a name="l00039"></a><a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableq1">00039</a> <a class="code" href="namespaceOgre.html#a473">LevelArray</a> TerrainRenderable::mLevelIndex;
<a name="l00040"></a><a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableq2">00040</a> <font class="keywordtype">bool</font> TerrainRenderable::mLevelInit = <font class="keyword">false</font>;
00041
<a name="l00042"></a><a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablea0">00042</a> TerrainRenderable::TerrainRenderable()
00043 : mTerrain(0)
00044 {
00045 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen22">mForcedRenderLevel</a> = -1;
00046
00047 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen3">mMinLevelDistSqr</a> = 0;
00048
00049 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen13">mInit</a> = <font class="keyword">false</font>;
00050 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen12">mRenderLevelChanged</a> = <font class="keyword">true</font>;
00051
00052 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen20">mColored</a> = <font class="keyword">false</font>;
00053 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen21">mLit</a> = <font class="keyword">false</font>;
00054
00055 <font class="keywordflow">for</font> ( <font class="keywordtype">int</font> i = 0; i < 4; i++ )
00056 {
00057 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen4">mNeighbors</a>[ i ] = 0;
00058 }
00059
00060 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb5">_initLevelIndexes</a>();
00061
00062 }
00063
<a name="l00064"></a><a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablea1">00064</a> TerrainRenderable::~TerrainRenderable()
00065 {
00066
00067 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablea2">deleteGeometry</a>();
00068 }
00069
<a name="l00070"></a><a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablea2">00070</a> <font class="keywordtype">void</font> TerrainRenderable::deleteGeometry()
00071 {
00072 <font class="keywordflow">if</font>(mTerrain)
00073 <font class="keyword">delete</font> <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen0">mTerrain</a>;
00074
00075 <font class="keywordflow">if</font> ( <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen3">mMinLevelDistSqr</a> != 0 )
00076 <font class="keyword">delete</font> [] <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen3">mMinLevelDistSqr</a>;
00077 }
00078
<a name="l00079"></a><a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablea3">00079</a> <font class="keywordtype">void</font> TerrainRenderable::init( <a class="code" href="classOgre_1_1TerrainOptions.html">TerrainOptions</a> &options )
00080 {
00081 <font class="comment">//ensure that the size works</font>
00082 <font class="keywordflow">if</font> ( ! <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb6">_checkSize</a>( options.<a class="code" href="classOgre_1_1TerrainOptions.html#Ogre_1_1TerrainOptionsm1">size</a> ) )
00083 {
00084 printf( <font class="stringliteral">"Terrain block must size: 2^n+1 ( it's %d )\n"</font>, options.<a class="code" href="classOgre_1_1TerrainOptions.html#Ogre_1_1TerrainOptionsm1">size</a> );
00085 <font class="keywordflow">return</font> ;
00086 }
00087
00088 <font class="keywordflow">if</font> ( options.<a class="code" href="classOgre_1_1TerrainOptions.html#Ogre_1_1TerrainOptionsm5">max_mipmap</a> != 0 )
00089 {
00090 <font class="keywordtype">int</font> i = ( int ) 1 << ( options.<a class="code" href="classOgre_1_1TerrainOptions.html#Ogre_1_1TerrainOptionsm5">max_mipmap</a> - 1 ) ;
00091
00092 <font class="keywordflow">if</font> ( ( i + 1 ) > options.<a class="code" href="classOgre_1_1TerrainOptions.html#Ogre_1_1TerrainOptionsm1">size</a> )
00093 {
00094 printf( <font class="stringliteral">"Invalid maximum mipmap specifed, must be n, such that 2^(n-1)+1 < options.size \n"</font> );
00095 <font class="keywordflow">return</font> ;
00096 }
00097 }
00098
00099 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablea2">deleteGeometry</a>();
00100
00101 <font class="comment">//calculate min and max heights;</font>
00102 <a class="code" href="namespaceOgre.html#a349">Real</a> min = 256000, max = 0;
00103
00104 <font class="comment">/* Initialize the variables */</font>
00105 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen21">mLit</a> = options.<a class="code" href="classOgre_1_1TerrainOptions.html#Ogre_1_1TerrainOptionsm14">lit</a>;
00106
00107 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen20">mColored</a> = options.<a class="code" href="classOgre_1_1TerrainOptions.html#Ogre_1_1TerrainOptionsm15">colored</a>;
00108
00109 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen14">mNearPlane</a> = options.<a class="code" href="classOgre_1_1TerrainOptions.html#Ogre_1_1TerrainOptionsm10">near_plane</a>;
00110
00111 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen15">mMaxPixelError</a> = options.<a class="code" href="classOgre_1_1TerrainOptions.html#Ogre_1_1TerrainOptionsm9">max_pixel_error</a>;
00112
00113 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen16">mVertResolution</a> = options.<a class="code" href="classOgre_1_1TerrainOptions.html#Ogre_1_1TerrainOptionsm11">vert_res</a>;
00114
00115 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen17">mTopCoord</a> = options.<a class="code" href="classOgre_1_1TerrainOptions.html#Ogre_1_1TerrainOptionsm13">top_coord</a>;
00116
00117 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen8">mSize</a> = options.<a class="code" href="classOgre_1_1TerrainOptions.html#Ogre_1_1TerrainOptionsm1">size</a>;
00118
00119 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen9">mWorldSize</a> = options.<a class="code" href="classOgre_1_1TerrainOptions.html#Ogre_1_1TerrainOptionsm2">world_size</a>;
00120
00121 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen1">mNumMipMaps</a> = options.<a class="code" href="classOgre_1_1TerrainOptions.html#Ogre_1_1TerrainOptionsm5">max_mipmap</a>;
00122
00123 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen0">mTerrain</a> = <font class="keyword">new</font> <a class="code" href="classOgre_1_1VertexData.html">VertexData</a>;
00124 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen0">mTerrain</a>-><a class="code" href="classOgre_1_1VertexData.html#Ogre_1_1VertexDatam2">vertexStart</a> = 0;
00125 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen0">mTerrain</a>-><a class="code" href="classOgre_1_1VertexData.html#Ogre_1_1VertexDatam3">vertexCount</a> = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen8">mSize</a> * <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen8">mSize</a>;
00126
00127 <a class="code" href="classOgre_1_1VertexDeclaration.html">VertexDeclaration</a>* decl = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen0">mTerrain</a>-><a class="code" href="classOgre_1_1VertexData.html#Ogre_1_1VertexDatam0">vertexDeclaration</a>;
00128 <a class="code" href="classOgre_1_1VertexBufferBinding.html">VertexBufferBinding</a>* bind = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen0">mTerrain</a>-><a class="code" href="classOgre_1_1VertexData.html#Ogre_1_1VertexDatam1">vertexBufferBinding</a>;
00129
00130 <font class="comment">// positions</font>
00131 size_t offset = 0;
00132 decl-><a class="code" href="classOgre_1_1VertexDeclaration.html#Ogre_1_1VertexDeclarationa3">addElement</a>(<a class="code" href="OgreTerrainRenderable_8cpp.html#a0">POSITION_BINDING</a>, 0, <a class="code" href="namespaceOgre.html#a631a154">VET_FLOAT3</a>, <a class="code" href="namespaceOgre.html#a630a143">VES_POSITION</a>);
00133 decl-><a class="code" href="classOgre_1_1VertexDeclaration.html#Ogre_1_1VertexDeclarationa3">addElement</a>(<a class="code" href="OgreTerrainRenderable_8cpp.html#a1">NORMAL_BINDING</a>, 0, <a class="code" href="namespaceOgre.html#a631a154">VET_FLOAT3</a>, <a class="code" href="namespaceOgre.html#a630a144">VES_NORMAL</a>);
00134 <font class="comment">// texture coord sets</font>
00135 decl-><a class="code" href="classOgre_1_1VertexDeclaration.html#Ogre_1_1VertexDeclarationa3">addElement</a>(<a class="code" href="OgreTerrainRenderable_8cpp.html#a2">TEXCOORD_BINDING</a>, offset, <a class="code" href="namespaceOgre.html#a631a153">VET_FLOAT2</a>, <a class="code" href="namespaceOgre.html#a630a149">VES_TEXTURE_COORDINATES</a>, 0);
00136 offset += VertexElement::getTypeSize(<a class="code" href="namespaceOgre.html#a631a153">VET_FLOAT2</a>);
00137 decl-><a class="code" href="classOgre_1_1VertexDeclaration.html#Ogre_1_1VertexDeclarationa3">addElement</a>(<a class="code" href="OgreTerrainRenderable_8cpp.html#a2">TEXCOORD_BINDING</a>, offset, <a class="code" href="namespaceOgre.html#a631a153">VET_FLOAT2</a>, <a class="code" href="namespaceOgre.html#a630a149">VES_TEXTURE_COORDINATES</a>, 1);
00138 offset += VertexElement::getTypeSize(<a class="code" href="namespaceOgre.html#a631a153">VET_FLOAT2</a>);
00139 decl-><a class="code" href="classOgre_1_1VertexDeclaration.html#Ogre_1_1VertexDeclarationa3">addElement</a>(<a class="code" href="OgreTerrainRenderable_8cpp.html#a3">COLOUR_BINDING</a>, 0, <a class="code" href="namespaceOgre.html#a631a156">VET_COLOUR</a>, <a class="code" href="namespaceOgre.html#a630a147">VES_DIFFUSE</a>);
00140
00141 <a class="code" href="classOgre_1_1HardwareVertexBufferSharedPtr.html">HardwareVertexBufferSharedPtr</a> vbuf =
00142 HardwareBufferManager::getSingleton().createVertexBuffer(
00143 decl-><a class="code" href="classOgre_1_1VertexDeclaration.html#Ogre_1_1VertexDeclarationa9">getVertexSize</a>(<a class="code" href="OgreTerrainRenderable_8cpp.html#a0">POSITION_BINDING</a>),
00144 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen0">mTerrain</a>-><a class="code" href="classOgre_1_1VertexData.html#Ogre_1_1VertexDatam3">vertexCount</a>,
00145 HardwareBuffer::HBU_STATIC_WRITE_ONLY, <font class="keyword">true</font>);
00146
00147 bind-><a class="code" href="classOgre_1_1VertexBufferBinding.html#Ogre_1_1VertexBufferBindinga2">setBinding</a>(<a class="code" href="OgreTerrainRenderable_8cpp.html#a0">POSITION_BINDING</a>, vbuf);
00148
00149 vbuf =
00150 HardwareBufferManager::getSingleton().createVertexBuffer(
00151 decl-><a class="code" href="classOgre_1_1VertexDeclaration.html#Ogre_1_1VertexDeclarationa9">getVertexSize</a>(<a class="code" href="OgreTerrainRenderable_8cpp.html#a1">NORMAL_BINDING</a>),
00152 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen0">mTerrain</a>-><a class="code" href="classOgre_1_1VertexData.html#Ogre_1_1VertexDatam3">vertexCount</a>,
00153 HardwareBuffer::HBU_STATIC_WRITE_ONLY);
00154
00155 bind-><a class="code" href="classOgre_1_1VertexBufferBinding.html#Ogre_1_1VertexBufferBindinga2">setBinding</a>(<a class="code" href="OgreTerrainRenderable_8cpp.html#a1">NORMAL_BINDING</a>, vbuf);
00156
00157 vbuf =
00158 HardwareBufferManager::getSingleton().createVertexBuffer(
00159 offset,
00160 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen0">mTerrain</a>-><a class="code" href="classOgre_1_1VertexData.html#Ogre_1_1VertexDatam3">vertexCount</a>,
00161 HardwareBuffer::HBU_STATIC_WRITE_ONLY);
00162
00163 bind-><a class="code" href="classOgre_1_1VertexBufferBinding.html#Ogre_1_1VertexBufferBindinga2">setBinding</a>(<a class="code" href="OgreTerrainRenderable_8cpp.html#a2">TEXCOORD_BINDING</a>, vbuf);
00164
00165 vbuf =
00166 HardwareBufferManager::getSingleton().createVertexBuffer(
00167 decl-><a class="code" href="classOgre_1_1VertexDeclaration.html#Ogre_1_1VertexDeclarationa9">getVertexSize</a>(<a class="code" href="OgreTerrainRenderable_8cpp.html#a3">COLOUR_BINDING</a>),
00168 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen0">mTerrain</a>-><a class="code" href="classOgre_1_1VertexData.html#Ogre_1_1VertexDatam3">vertexCount</a>,
00169 HardwareBuffer::HBU_STATIC_WRITE_ONLY);
00170
00171 bind-><a class="code" href="classOgre_1_1VertexBufferBinding.html#Ogre_1_1VertexBufferBindinga2">setBinding</a>(<a class="code" href="OgreTerrainRenderable_8cpp.html#a3">COLOUR_BINDING</a>, vbuf);
00172
00173 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen13">mInit</a> = <font class="keyword">true</font>;
00174
00175 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen2">mRenderLevel</a> = 1;
00176
00177 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen3">mMinLevelDistSqr</a> = <font class="keyword">new</font> <a class="code" href="namespaceOgre.html#a349">Real</a>[ <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen1">mNumMipMaps</a> ];
00178
00179
00180 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen7">mScale</a>.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m0">x</a> = options.<a class="code" href="classOgre_1_1TerrainOptions.html#Ogre_1_1TerrainOptionsm6">scalex</a>;
00181
00182 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen7">mScale</a>.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m1">y</a> = options.<a class="code" href="classOgre_1_1TerrainOptions.html#Ogre_1_1TerrainOptionsm7">scaley</a>;
00183
00184 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen7">mScale</a>.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m2">z</a> = options.<a class="code" href="classOgre_1_1TerrainOptions.html#Ogre_1_1TerrainOptionsm8">scalez</a>;
00185
00186
00187 <a class="code" href="namespaceOgre.html#a53">RGBA</a>* pCol = static_cast<RGBA*>( vbuf->lock(HardwareBuffer::HBL_DISCARD) );
00188 <font class="keywordflow">for</font> ( <font class="keywordtype">int</font> i = 0; i < <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen8">mSize</a>*<a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen8">mSize</a>; i++ )
00189 {
00190 *pCol++ = 0xFFFFFFFF;
00191 }
00192 vbuf->unlock();
00193
00194 <font class="keywordtype">int</font> endx = options.<a class="code" href="classOgre_1_1TerrainOptions.html#Ogre_1_1TerrainOptionsm3">startx</a> + options.<a class="code" href="classOgre_1_1TerrainOptions.html#Ogre_1_1TerrainOptionsm1">size</a>;
00195
00196 <font class="keywordtype">int</font> endz = options.<a class="code" href="classOgre_1_1TerrainOptions.html#Ogre_1_1TerrainOptionsm4">startz</a> + options.<a class="code" href="classOgre_1_1TerrainOptions.html#Ogre_1_1TerrainOptionsm1">size</a>;
00197
00198 <a class="code" href="classOgre_1_1Vector3.html">Vector3</a> left, down, here;
00199
00200 vbuf = bind-><a class="code" href="classOgre_1_1VertexBufferBinding.html#Ogre_1_1VertexBufferBindinga6">getBuffer</a>(<a class="code" href="OgreTerrainRenderable_8cpp.html#a0">POSITION_BINDING</a>);
00201
00202 <a class="code" href="namespaceOgre.html#a349">Real</a>* pPos = static_cast<Real*>(vbuf->lock(HardwareBuffer::HBL_DISCARD));
00203
00204 <a class="code" href="classOgre_1_1HardwareVertexBufferSharedPtr.html">HardwareVertexBufferSharedPtr</a> vtexbuf = bind-><a class="code" href="classOgre_1_1VertexBufferBinding.html#Ogre_1_1VertexBufferBindinga6">getBuffer</a>(<a class="code" href="OgreTerrainRenderable_8cpp.html#a2">TEXCOORD_BINDING</a>);
00205
00206 <a class="code" href="namespaceOgre.html#a349">Real</a>* pTex = static_cast<Real*>(vtexbuf->lock(HardwareBuffer::HBL_DISCARD));
00207
00208 <font class="keywordflow">for</font> ( <font class="keywordtype">int</font> j = options.<a class="code" href="classOgre_1_1TerrainOptions.html#Ogre_1_1TerrainOptionsm4">startz</a>; j < endz; j++ )
00209 {
00210 <font class="keywordflow">for</font> ( <font class="keywordtype">int</font> i = options.<a class="code" href="classOgre_1_1TerrainOptions.html#Ogre_1_1TerrainOptionsm3">startx</a>; i < endx; i++ )
00211 {
00212 <a class="code" href="namespaceOgre.html#a349">Real</a> height = options.<a class="code" href="classOgre_1_1TerrainOptions.html#Ogre_1_1TerrainOptionsa1">_worldheight</a>( i, j ) * options.<a class="code" href="classOgre_1_1TerrainOptions.html#Ogre_1_1TerrainOptionsm7">scaley</a>;
00213
00214 *pPos++ = ( Real ) i * options.<a class="code" href="classOgre_1_1TerrainOptions.html#Ogre_1_1TerrainOptionsm6">scalex</a>; <font class="comment">//x</font>
00215 *pPos++ = height; <font class="comment">//y</font>
00216 *pPos++ = ( Real ) j * options.<a class="code" href="classOgre_1_1TerrainOptions.html#Ogre_1_1TerrainOptionsm8">scalez</a>; <font class="comment">//z</font>
00217
00218 *pTex++ = ( Real ) i / ( Real ) options.<a class="code" href="classOgre_1_1TerrainOptions.html#Ogre_1_1TerrainOptionsm2">world_size</a> ;
00219 *pTex++ = ( Real ) ( Real ) j / ( Real ) options.<a class="code" href="classOgre_1_1TerrainOptions.html#Ogre_1_1TerrainOptionsm2">world_size</a>;
00220
00221 *pTex++ = ( ( Real ) i / ( Real ) <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen8">mSize</a> ) * options.<a class="code" href="classOgre_1_1TerrainOptions.html#Ogre_1_1TerrainOptionsm12">detail_tile</a>;
00222 *pTex++ = ( ( Real ) ( Real ) j / ( Real ) <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen8">mSize</a> ) * options.<a class="code" href="classOgre_1_1TerrainOptions.html#Ogre_1_1TerrainOptionsm12">detail_tile</a>;
00223
00224 <font class="keywordflow">if</font> ( height < min )
00225 min = ( Real ) height;
00226
00227 <font class="keywordflow">if</font> ( height > max )
00228 max = ( Real ) height;
00229 }
00230 }
00231
00232 vtexbuf->unlock();
00233 vbuf->unlock();
00234
00235 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen5">mBounds</a>.<a class="code" href="classOgre_1_1AxisAlignedBox.html#Ogre_1_1AxisAlignedBoxa9">setExtents</a>( ( <a class="code" href="namespaceOgre.html#a349">Real</a> ) options.<a class="code" href="classOgre_1_1TerrainOptions.html#Ogre_1_1TerrainOptionsm3">startx</a> * options.<a class="code" href="classOgre_1_1TerrainOptions.html#Ogre_1_1TerrainOptionsm6">scalex</a>, min, ( <a class="code" href="namespaceOgre.html#a349">Real</a> ) options.<a class="code" href="classOgre_1_1TerrainOptions.html#Ogre_1_1TerrainOptionsm4">startz</a> * options.<a class="code" href="classOgre_1_1TerrainOptions.html#Ogre_1_1TerrainOptionsm8">scalez</a>,
00236 ( <a class="code" href="namespaceOgre.html#a349">Real</a> ) ( endx - 1 ) * options.<a class="code" href="classOgre_1_1TerrainOptions.html#Ogre_1_1TerrainOptionsm6">scalex</a>, max, ( <a class="code" href="namespaceOgre.html#a349">Real</a> ) ( endz - 1 ) * options.<a class="code" href="classOgre_1_1TerrainOptions.html#Ogre_1_1TerrainOptionsm8">scalez</a> );
00237
00238
00239 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen6">mCenter</a> = <a class="code" href="classOgre_1_1Vector3.html">Vector3</a>( ( options.<a class="code" href="classOgre_1_1TerrainOptions.html#Ogre_1_1TerrainOptionsm3">startx</a> * options.<a class="code" href="classOgre_1_1TerrainOptions.html#Ogre_1_1TerrainOptionsm6">scalex</a> + endx - 1 ) / 2,
00240 ( min + max ) / 2,
00241 ( options.<a class="code" href="classOgre_1_1TerrainOptions.html#Ogre_1_1TerrainOptionsm4">startz</a> * options.<a class="code" href="classOgre_1_1TerrainOptions.html#Ogre_1_1TerrainOptionsm8">scalez</a> + endz - 1 ) / 2 );
00242
00243
00244 <a class="code" href="namespaceOgre.html#a349">Real</a> C = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb8">_calculateCFactor</a>();
00245
00246 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb7">_calculateMinLevelDist2</a>( C );
00247 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablea25">_calculateNormals</a>();
00248
00249 }
00250
<a name="l00251"></a><a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablea18">00251</a> <font class="keywordtype">void</font> TerrainRenderable::_getNormalAt( <font class="keywordtype">float</font> x, <font class="keywordtype">float</font> z, <a class="code" href="classOgre_1_1Vector3.html">Vector3</a> * result )
00252 {
00253
00254 <a class="code" href="classOgre_1_1Vector3.html">Vector3</a> here, left, down;
00255 here.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m0">x</a> = x;
00256 here.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m1">y</a> = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablea19">getHeightAt</a>( x, z );
00257 here.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m2">z</a> = z;
00258
00259 left.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m0">x</a> = x - 1;
00260 left.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m1">y</a> = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablea19">getHeightAt</a>( x - 1, z );
00261 left.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m2">z</a> = z;
00262
00263 down.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m0">x</a> = x;
00264 down.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m1">y</a> = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablea19">getHeightAt</a>( x, z + 1 );
00265 down.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m2">z</a> = z + 1;
00266
00267 left = left - here;
00268
00269 down = down - here;
00270
00271 left.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3a24">normalise</a>();
00272 down.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3a24">normalise</a>();
00273
00274 *result = left.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3a25">crossProduct</a>( down );
00275 result -> normalise();
00276
00277 <font class="comment">// result->x = - result->x;</font>
00278 <font class="comment">// result->y = - result->y;</font>
00279 <font class="comment">// result->z = - result->z;</font>
00280 }
00281
<a name="l00282"></a><a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablea25">00282</a> <font class="keywordtype">void</font> TerrainRenderable::_calculateNormals()
00283 {
00284 <a class="code" href="classOgre_1_1Vector3.html">Vector3</a> norm;
00285
00286 <a class="code" href="classOgre_1_1HardwareVertexBufferSharedPtr.html">HardwareVertexBufferSharedPtr</a> vbuf =
00287 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen0">mTerrain</a>-><a class="code" href="classOgre_1_1VertexData.html#Ogre_1_1VertexDatam1">vertexBufferBinding</a>-><a class="code" href="classOgre_1_1VertexBufferBinding.html#Ogre_1_1VertexBufferBindinga6">getBuffer</a>(<a class="code" href="OgreTerrainRenderable_8cpp.html#a1">NORMAL_BINDING</a>);
00288 <a class="code" href="namespaceOgre.html#a349">Real</a>* pNorm = static_cast<Real*>( vbuf->lock(HardwareBuffer::HBL_DISCARD) );
00289
00290 <font class="keywordflow">for</font> ( <font class="keywordtype">int</font> j = 0; j < <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen8">mSize</a>; j++ )
00291 {
00292 <font class="keywordflow">for</font> ( <font class="keywordtype">int</font> i = 0; i < <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen8">mSize</a>; i++ )
00293 {
00294
00295 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablea18">_getNormalAt</a>( <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb1">_vertex</a>( i, j, 0 ), <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb1">_vertex</a>( i, j, 2 ), &norm );
00296
00297 <font class="comment">// printf( "Normal = %5f,%5f,%5f\n", norm.x, norm.y, norm.z );</font>
00298
00299 *pNorm++ = norm.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m0">x</a>;
00300 *pNorm++ = norm.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m1">y</a>;
00301 *pNorm++ = norm.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m2">z</a>;
00302 }
00303
00304 }
00305 vbuf->unlock();
00306 }
00307
<a name="l00308"></a><a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablea7">00308</a> <font class="keywordtype">void</font> TerrainRenderable::_notifyCurrentCamera( <a class="code" href="classOgre_1_1Camera.html">Camera</a>* cam )
00309 {
00310
00311 <font class="keywordflow">if</font> ( <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen22">mForcedRenderLevel</a> >= 0 )
00312 {
00313 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen2">mRenderLevel</a> = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen22">mForcedRenderLevel</a>;
00314 <font class="keywordflow">return</font> ;
00315 }
00316
00317
00318 <font class="keywordtype">int</font> old_level = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen2">mRenderLevel</a>;
00319
00320 <a class="code" href="classOgre_1_1Vector3.html">Vector3</a> cpos = cam -> getPosition();
00321 <a class="code" href="classOgre_1_1Vector3.html">Vector3</a> diff = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen6">mCenter</a> - cpos;
00322
00323 <a class="code" href="namespaceOgre.html#a349">Real</a> L = diff.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3a22">squaredLength</a>();
00324
00325 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen19">current_L</a> = L;
00326
00327
00328 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen2">mRenderLevel</a> = -1;
00329
00330 <font class="keywordflow">for</font> ( <font class="keywordtype">int</font> i = 0; i < <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen1">mNumMipMaps</a>; i++ )
00331 {
00332 <font class="keywordflow">if</font> ( <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen3">mMinLevelDistSqr</a>[ i ] > L )
00333 {
00334 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen2">mRenderLevel</a> = i - 1;
00335 <font class="keywordflow">break</font>;
00336 }
00337 }
00338
00339 <font class="keywordflow">if</font> ( <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen2">mRenderLevel</a> < 0 )
00340 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen2">mRenderLevel</a> = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen1">mNumMipMaps</a> - 1;
00341
00342
00343 <font class="comment">// mRenderLevel = 4;</font>
00344
00345 }
00346
<a name="l00347"></a><a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablea8">00347</a> <font class="keywordtype">void</font> TerrainRenderable::_updateRenderQueue( <a class="code" href="classOgre_1_1RenderQueue.html">RenderQueue</a>* queue )
00348 {
00349 queue-><a class="code" href="classOgre_1_1RenderQueue.html#Ogre_1_1RenderQueuea3">addRenderable</a>( <font class="keyword">this</font> );
00350 }
00351
<a name="l00352"></a><a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablea9">00352</a> <font class="keywordtype">void</font> TerrainRenderable::getRenderOperation( <a class="code" href="classOgre_1_1RenderOperation.html">RenderOperation</a>& op )
00353 {
00354 <font class="comment">//setup indexes for vertices and uvs...</font>
00355
00356 <font class="keywordflow">if</font> ( !<a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen13">mInit</a> )
00357 {
00358 printf( <font class="stringliteral">"Uninitialized\n"</font> );
00359 <font class="keywordflow">return</font> ;
00360 }
00361
00362 <font class="comment">/*</font>
00363 <font class="comment"> int j=0;</font>
00364 <font class="comment"> for( j=0; j<mSize; j+= (mRenderLevel*2) ) //depth</font>
00365 <font class="comment"> {</font>
00366 <font class="comment"> int i=0;</font>
00367 <font class="comment"> if( j != 0 )</font>
00368 <font class="comment"> {</font>
00369 <font class="comment"> //two degenerate tris to turn the corner...</font>
00370 <font class="comment"> pIndexes[nupIndexes] = _index(i, j+mRenderLevel ); nupIndexes++;</font>
00371 <font class="comment"> pIndexes[numIndexes] = _index(i, j+mRenderLevel ); numIndexes++;</font>
00372 <font class="comment">}</font>
00373 <font class="comment"></font>
00374 <font class="comment"> //forward strip...</font>
00375 <font class="comment"> for( i=0; i<mSize; i+= mRenderLevel ) //accross</font>
00376 <font class="comment"> {</font>
00377 <font class="comment"> pIndexes[numIndexes] = _index(i, j ); numIndexes++;</font>
00378 <font class="comment"> pIndexes[numIndexes] = _index(i, j+mRenderLevel ); numIndexes++;</font>
00379 <font class="comment">}</font>
00380 <font class="comment"> i -= mRenderLevel; //backtrack...</font>
00381 <font class="comment"></font>
00382 <font class="comment"></font>
00383 <font class="comment"> //degenerate tris to turn the corner...</font>
00384 <font class="comment"></font>
00385 <font class="comment"> pIndexes[numIndexes] = _index(i, j+mRenderLevel ); numIndexes++;</font>
00386 <font class="comment"> pIndexes[numIndexes] = _index(i, j+mRenderLevel ); numIndexes++;</font>
00387 <font class="comment"></font>
00388 <font class="comment"> //back strip</font>
00389 <font class="comment"> for( i = mSize-mRenderLevel; i>=0; i-=mRenderLevel )</font>
00390 <font class="comment"> {</font>
00391 <font class="comment"> pIndexes[numIndexes] = _index(i, j+mRenderLevel ); numIndexes++;</font>
00392 <font class="comment"> pIndexes[numIndexes] = _index(i, j ); numIndexes++;</font>
00393 <font class="comment">}</font>
00394 <font class="comment"></font>
00395 <font class="comment">}</font>
00396 <font class="comment"> */</font>
00397
00398 <font class="keywordtype">int</font> east = 0, west = 0, north = 0, south = 0;
00399
00400 <font class="keywordtype">int</font> step = 1 << <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen2">mRenderLevel</a>;
00401
00402 <font class="keywordtype">int</font> index_array = 0;
00403
00404 <font class="keywordtype">int</font> numIndexes = 0;
00405
00406 <font class="keywordflow">if</font> ( <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen4">mNeighbors</a>[ <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderables5Ogre_1_1TerrainRenderables2">EAST</a> ] != 0 && <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen4">mNeighbors</a>[ <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderables5Ogre_1_1TerrainRenderables2">EAST</a> ] -> <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen2">mRenderLevel</a> > <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen2">mRenderLevel</a> )
00407 {
00408 east = step; index_array |= <a class="code" href="OgreTerrainRenderable_8h.html#a3">TILE_EAST</a>;
00409 }
00410
00411 <font class="keywordflow">if</font> ( <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen4">mNeighbors</a>[ <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderables5Ogre_1_1TerrainRenderables3">WEST</a> ] != 0 && <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen4">mNeighbors</a>[ <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderables5Ogre_1_1TerrainRenderables3">WEST</a> ] -> <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen2">mRenderLevel</a> > <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen2">mRenderLevel</a> )
00412 {
00413 west = step; index_array |= <a class="code" href="OgreTerrainRenderable_8h.html#a2">TILE_WEST</a>;
00414 }
00415
00416 <font class="keywordflow">if</font> ( <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen4">mNeighbors</a>[ <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderables5Ogre_1_1TerrainRenderables0">NORTH</a> ] != 0 && <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen4">mNeighbors</a>[ <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderables5Ogre_1_1TerrainRenderables0">NORTH</a> ] -> <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen2">mRenderLevel</a> > <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen2">mRenderLevel</a> )
00417 {
00418 north = step; index_array |= <a class="code" href="OgreTerrainRenderable_8h.html#a0">TILE_NORTH</a>;
00419 }
00420
00421 <font class="keywordflow">if</font> ( <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen4">mNeighbors</a>[ <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderables5Ogre_1_1TerrainRenderables1">SOUTH</a> ] != 0 && <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen4">mNeighbors</a>[ <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderables5Ogre_1_1TerrainRenderables1">SOUTH</a> ] -> <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen2">mRenderLevel</a> > <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen2">mRenderLevel</a> )
00422 {
00423 south = step; index_array |= <a class="code" href="OgreTerrainRenderable_8h.html#a1">TILE_SOUTH</a>;
00424 }
00425
00426 <a class="code" href="classOgre_1_1IndexData.html">IndexData</a>* indexData = 0;
00427
00428 <font class="keywordflow">if</font> ( <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableq1">mLevelIndex</a>[ <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen2">mRenderLevel</a> ][ index_array ] != 0 )
00429 {
00430 indexData = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableq1">mLevelIndex</a>[ <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen2">mRenderLevel</a> ][ index_array ];
00431 }
00432 <font class="keywordflow">else</font>
00433 {
00434 <font class="keywordtype">int</font> new_length = ( <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen8">mSize</a> / step ) * ( <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen8">mSize</a> / step ) * 2 * 2 * 2 ;
00435 <font class="comment">//this is the maximum for a level. It wastes a little, but shouldn't be a problem.</font>
00436
00437 indexData = <font class="keyword">new</font> <a class="code" href="classOgre_1_1IndexData.html">IndexData</a>;
00438 indexData-><a class="code" href="classOgre_1_1IndexData.html#Ogre_1_1IndexDatam0">indexBuffer</a> =
00439 HardwareBufferManager::getSingleton().createIndexBuffer(
00440 HardwareIndexBuffer::IT_16BIT,
00441 new_length, HardwareBuffer::HBU_STATIC_WRITE_ONLY);<font class="comment">//, false);</font>
00442
00443 gIndexCache.<a class="code" href="classOgre_1_1TerrainBufferCache.html#Ogre_1_1TerrainBufferCachem0">mCache</a>.push_back( indexData );
00444
00445 numIndexes = 0;
00446
00447 <font class="keywordtype">unsigned</font> <font class="keywordtype">short</font>* pIdx = static_cast<unsigned short*>(
00448 indexData-><a class="code" href="classOgre_1_1IndexData.html#Ogre_1_1IndexDatam0">indexBuffer</a>->lock(0,
00449 indexData-><a class="code" href="classOgre_1_1IndexData.html#Ogre_1_1IndexDatam0">indexBuffer</a>->getSizeInBytes(),
00450 HardwareBuffer::HBL_DISCARD));
00451
00452 <font class="keywordflow">for</font> ( <font class="keywordtype">int</font> j = north; j < <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen8">mSize</a> - 1 - south; j += step )
00453 {
00454 <font class="keywordflow">for</font> ( <font class="keywordtype">int</font> i = west; i < <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen8">mSize</a> - 1 - east; i += step )
00455 {
00456 <font class="comment">//triangles</font>
00457 *pIdx++ = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb0">_index</a>( i, j ); numIndexes++;
00458 *pIdx++ = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb0">_index</a>( i, j + step ); numIndexes++;
00459 *pIdx++ = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb0">_index</a>( i + step, j ); numIndexes++;
00460
00461 *pIdx++ = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb0">_index</a>( i, j + step ); numIndexes++;
00462 *pIdx++ = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb0">_index</a>( i + step, j + step ); numIndexes++;
00463 *pIdx++ = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb0">_index</a>( i + step, j ); numIndexes++;
00464 }
00465 }
00466
00467 <font class="keywordtype">int</font> substep = step << 1;
00468
00469 <font class="keywordflow">if</font> ( west > 0 )
00470 {
00471
00472 <font class="keywordflow">for</font> ( <font class="keywordtype">int</font> j = 0; j < <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen8">mSize</a> - 1; j += substep )
00473 {
00474 <font class="comment">//skip the first bit of the corner if the north side is a different level as well.</font>
00475 <font class="keywordflow">if</font> ( j > 0 || north == 0 )
00476 {
00477 *pIdx++ = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb0">_index</a>( 0, j ); numIndexes++;
00478 *pIdx++ = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb0">_index</a>( step, j + step ); numIndexes++;
00479 *pIdx++ = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb0">_index</a>( step, j ); numIndexes++;
00480 }
00481
00482 *pIdx++ = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb0">_index</a>( step, j + step ); numIndexes++;
00483 *pIdx++ = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb0">_index</a>( 0, j ); numIndexes++;
00484 *pIdx++ = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb0">_index</a>( 0, j + step + step ); numIndexes++;
00485
00486 <font class="keywordflow">if</font> ( j < <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen8">mSize</a> - 1 - substep || south == 0 )
00487 {
00488 *pIdx++ = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb0">_index</a>( step, j + step ); numIndexes++;
00489 *pIdx++ = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb0">_index</a>( 0, j + step + step ); numIndexes++;
00490 *pIdx++ = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb0">_index</a>( step, j + step + step ); numIndexes++;
00491 }
00492 }
00493 }
00494
00495 <font class="keywordflow">if</font> ( east > 0 )
00496 {
00497 <font class="keywordtype">int</font> x = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen8">mSize</a> - 1;
00498
00499 <font class="keywordflow">for</font> ( <font class="keywordtype">int</font> j = 0; j < <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen8">mSize</a> - 1; j += substep )
00500 {
00501 <font class="comment">//skip the first bit of the corner if the north side is a different level as well.</font>
00502 <font class="keywordflow">if</font> ( j > 0 || north == 0 )
00503 {
00504 *pIdx++ = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb0">_index</a>( x, j ); numIndexes++;
00505 *pIdx++ = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb0">_index</a>( x - step, j ); numIndexes++;
00506 *pIdx++ = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb0">_index</a>( x - step, j + step ); numIndexes++;
00507 }
00508
00509 *pIdx++ = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb0">_index</a>( x, j ); numIndexes++;
00510 *pIdx++ = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb0">_index</a>( x - step, j + step ); numIndexes++;
00511 *pIdx++ = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb0">_index</a>( x, j + step + step ); numIndexes++;
00512
00513 <font class="keywordflow">if</font> ( j < <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen8">mSize</a> - 1 - substep || south == 0 )
00514 {
00515 *pIdx++ = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb0">_index</a>( x, j + step + step ); numIndexes++;
00516 *pIdx++ = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb0">_index</a>( x - step, j + step ); numIndexes++;
00517 *pIdx++ = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb0">_index</a>( x - step, j + step + step ); numIndexes++;
00518 }
00519 }
00520 }
00521
00522 <font class="keywordflow">if</font> ( south > 0 )
00523 {
00524 <font class="keywordtype">int</font> x = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen8">mSize</a> - 1;
00525
00526 <font class="keywordflow">for</font> ( <font class="keywordtype">int</font> j = 0; j < <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen8">mSize</a> - 1; j += substep )
00527 {
00528 <font class="comment">//skip the first bit of the corner if the north side is a different level as well.</font>
00529 <font class="keywordflow">if</font> ( j > 0 || west == 0 )
00530 {
00531 *pIdx++ = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb0">_index</a>( j, x - step ); numIndexes++;
00532 *pIdx++ = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb0">_index</a>( j, x ); numIndexes++;
00533 *pIdx++ = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb0">_index</a>( j + step, x - step ); numIndexes++;
00534 }
00535
00536 *pIdx++ = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb0">_index</a>( j + step, x - step ); numIndexes++;
00537 *pIdx++ = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb0">_index</a>( j, x ); numIndexes++;
00538 *pIdx++ = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb0">_index</a>( j + step + step, x ); numIndexes++;
00539
00540 <font class="keywordflow">if</font> ( j < <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen8">mSize</a> - 1 - substep || east == 0 )
00541 {
00542 *pIdx++ = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb0">_index</a>( j + step, x - step ); numIndexes++;
00543 *pIdx++ = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb0">_index</a>( j + step + step, x ); numIndexes++;
00544 *pIdx++ = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb0">_index</a>( j + step + step, x - step ); numIndexes++;
00545 }
00546 }
00547
00548 }
00549
00550 <font class="keywordflow">if</font> ( north > 0 )
00551 {
00552 <font class="keywordflow">for</font> ( <font class="keywordtype">int</font> j = 0; j < <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen8">mSize</a> - 1; j += substep )
00553 {
00554 <font class="comment">//skip the first bit of the corner if the north side is a different level as well.</font>
00555 <font class="keywordflow">if</font> ( j > 0 || west == 0 )
00556 {
00557 *pIdx++ = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb0">_index</a>( j, 0 ); numIndexes++;
00558 *pIdx++ = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb0">_index</a>( j, step ); numIndexes++;
00559 *pIdx++ = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb0">_index</a>( j + step, step ); numIndexes++;
00560 }
00561
00562 *pIdx++ = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb0">_index</a>( j, 0 ); numIndexes++;
00563 *pIdx++ = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb0">_index</a>( j + step, step ); numIndexes++;
00564 *pIdx++ = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb0">_index</a>( j + step + step, 0 ); numIndexes++;
00565
00566 <font class="keywordflow">if</font> ( j < <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen8">mSize</a> - 1 - substep || east == 0 )
00567 {
00568 *pIdx++ = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb0">_index</a>( j + step + step, 0 ); numIndexes++;
00569 *pIdx++ = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb0">_index</a>( j + step, step ); numIndexes++;
00570 *pIdx++ = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb0">_index</a>( j + step + step, step ); numIndexes++;
00571 }
00572 }
00573
00574 }
00575
00576 indexData-><a class="code" href="classOgre_1_1IndexData.html#Ogre_1_1IndexDatam0">indexBuffer</a>->unlock();
00577 indexData-><a class="code" href="classOgre_1_1IndexData.html#Ogre_1_1IndexDatam2">indexCount</a> = numIndexes;
00578 indexData-><a class="code" href="classOgre_1_1IndexData.html#Ogre_1_1IndexDatam1">indexStart</a> = 0;
00579
00580 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableq1">mLevelIndex</a>[ <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen2">mRenderLevel</a> ][ index_array ] = indexData;
00581 }
00582
00583 op.<a class="code" href="classOgre_1_1RenderOperation.html#Ogre_1_1RenderOperationm2">useIndexes</a> = <font class="keyword">true</font>;
00584 op.<a class="code" href="classOgre_1_1RenderOperation.html#Ogre_1_1RenderOperationm1">operationType</a> = RenderOperation::OT_TRIANGLE_LIST;
00585 op.<a class="code" href="classOgre_1_1RenderOperation.html#Ogre_1_1RenderOperationm0">vertexData</a> = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen0">mTerrain</a>;
00586 op.<a class="code" href="classOgre_1_1RenderOperation.html#Ogre_1_1RenderOperationm3">indexData</a> = indexData;
00587
00588 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablep0">mRenderedTris</a> += ( indexData-><a class="code" href="classOgre_1_1IndexData.html#Ogre_1_1IndexDatam2">indexCount</a> / 3 );
00589
00590
00591 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen12">mRenderLevelChanged</a> = <font class="keyword">false</font>;
00592
00593 }
00594
<a name="l00595"></a><a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablea11">00595</a> <font class="keywordtype">void</font> TerrainRenderable::getWorldTransforms( <a class="code" href="classOgre_1_1Matrix4.html">Matrix4</a>* xform )<font class="keyword"> const</font>
00596 <font class="keyword"></font>{
00597 *xform = <a class="code" href="classOgre_1_1MovableObject.html#Ogre_1_1WireBoundingBoxn9">mParentNode</a>-><a class="code" href="classOgre_1_1Node.html#Ogre_1_1TagPointa59">_getFullTransform</a>();
00598 }
00599
<a name="l00600"></a><a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablea12">00600</a> <font class="keyword">const</font> <a class="code" href="classOgre_1_1Quaternion.html">Quaternion</a>& TerrainRenderable::getWorldOrientation(<font class="keywordtype">void</font>)<font class="keyword"> const</font>
00601 <font class="keyword"></font>{
00602 <font class="keywordflow">return</font> <a class="code" href="classOgre_1_1MovableObject.html#Ogre_1_1WireBoundingBoxn9">mParentNode</a>-><a class="code" href="classOgre_1_1Node.html#Ogre_1_1TagPointa56">_getDerivedOrientation</a>();
00603 }
<a name="l00604"></a><a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablea13">00604</a> <font class="keyword">const</font> <a class="code" href="classOgre_1_1Vector3.html">Vector3</a>& TerrainRenderable::getWorldPosition(<font class="keywordtype">void</font>)<font class="keyword"> const</font>
00605 <font class="keyword"></font>{
00606 <font class="keywordflow">return</font> <a class="code" href="classOgre_1_1MovableObject.html#Ogre_1_1WireBoundingBoxn9">mParentNode</a>-><a class="code" href="classOgre_1_1Node.html#Ogre_1_1TagPointa57">_getDerivedPosition</a>();
00607 }
00608
<a name="l00609"></a><a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb6">00609</a> <font class="keywordtype">bool</font> TerrainRenderable::_checkSize( <font class="keywordtype">int</font> n )
00610 {
00611 <font class="keywordflow">for</font> ( <font class="keywordtype">int</font> i = 0; i < 10; i++ )
00612 {
00613 <font class="keywordflow">if</font> ( ( ( 1 << i ) + 1 ) == n )
00614 <font class="keywordflow">return</font> <font class="keyword">true</font>;
00615 }
00616
00617 <font class="keywordflow">return</font> <font class="keyword">false</font>;
00618 }
00619
00620
<a name="l00621"></a><a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb7">00621</a> <font class="keywordtype">void</font> TerrainRenderable::_calculateMinLevelDist2( <a class="code" href="namespaceOgre.html#a349">Real</a> C )
00622 {
00623 <font class="comment">//level 0 has no delta.</font>
00624 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen3">mMinLevelDistSqr</a>[ 0 ] = 0;
00625
00626 <font class="keywordflow">for</font> ( <font class="keywordtype">int</font> level = 1; level < <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen1">mNumMipMaps</a>; level++ )
00627 {
00628 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen3">mMinLevelDistSqr</a>[ level ] = 0;
00629
00630 <font class="keywordtype">int</font> step = 1 << level;
00631
00632 <font class="keywordflow">for</font> ( <font class="keywordtype">int</font> j = 0; j < <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen8">mSize</a> - step; j += step )
00633 {
00634 <font class="keywordflow">for</font> ( <font class="keywordtype">int</font> i = 0; i < <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen8">mSize</a> - step; i += step )
00635 {
00636 <font class="comment">//check each height inbetween the steps.</font>
00637 <a class="code" href="namespaceOgre.html#a349">Real</a> h1 = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb1">_vertex</a>( i, j, 1 );
00638 <a class="code" href="namespaceOgre.html#a349">Real</a> h2 = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb1">_vertex</a>( i + step, j, 1 );
00639 <a class="code" href="namespaceOgre.html#a349">Real</a> h3 = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb1">_vertex</a>( i + step, j + step, 1 );
00640 <a class="code" href="namespaceOgre.html#a349">Real</a> h4 = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb1">_vertex</a>( i, j + step, 1 );
00641
00642 <font class="keywordflow">for</font> ( <font class="keywordtype">int</font> z = 1; z < step; z++ )
00643 {
00644 <font class="keywordflow">for</font> ( <font class="keywordtype">int</font> x = 1; x < step; x++ )
00645 {
00646
00647 <a class="code" href="namespaceOgre.html#a349">Real</a> zpct = z / step;
00648 <a class="code" href="namespaceOgre.html#a349">Real</a> xpct = x / step;
00649
00650 <font class="comment">//interpolated height</font>
00651 <font class="keywordtype">float</font> top = h3 * ( 1.0f - xpct ) + xpct * h4;
00652 <font class="keywordtype">float</font> bottom = h1 * ( 1.0f - xpct ) + xpct * h2;
00653
00654 <a class="code" href="namespaceOgre.html#a349">Real</a> interp_h = top * ( 1.0f - zpct ) + zpct * bottom;
00655
00656 <a class="code" href="namespaceOgre.html#a349">Real</a> actual_h = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb1">_vertex</a>( i + x, j + z, 1 );
00657 <a class="code" href="namespaceOgre.html#a349">Real</a> delta = fabs( interp_h - actual_h );
00658
00659 <a class="code" href="namespaceOgre.html#a349">Real</a> D2 = delta * delta * C * C;
00660
00661 <font class="keywordflow">if</font> ( <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen3">mMinLevelDistSqr</a>[ level ] < D2 )
00662 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen3">mMinLevelDistSqr</a>[ level ] = D2;
00663 }
00664
00665 }
00666 }
00667 }
00668
00669 }
00670
00671 <font class="comment">//make sure the levels are increasing...</font>
00672 <font class="keywordflow">for</font> ( <font class="keywordtype">int</font> i = 1; i < <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen1">mNumMipMaps</a>; i++ )
00673 {
00674 <font class="keywordflow">if</font> ( <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen3">mMinLevelDistSqr</a>[ i ] < <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen3">mMinLevelDistSqr</a>[ i - 1 ] )
00675 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen3">mMinLevelDistSqr</a>[ i ] = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen3">mMinLevelDistSqr</a>[ i - 1 ] + 1;
00676 }
00677
00678 }
00679
<a name="l00680"></a><a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb5">00680</a> <font class="keywordtype">void</font> TerrainRenderable::_initLevelIndexes()
00681 {
00682 <font class="keywordflow">if</font> ( mLevelInit )
00683 <font class="keywordflow">return</font> ;
00684
00685
00686 <font class="keywordflow">if</font> ( <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableq1">mLevelIndex</a>.size() == 0 )
00687 {
00688 <font class="keywordflow">for</font> ( <font class="keywordtype">int</font> i = 0; i < 16; i++ )
00689 {
00690
00691 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableq1">mLevelIndex</a>.push_back( <a class="code" href="namespaceOgre.html#a472">IndexArray</a>() );
00692
00693 <font class="keywordflow">for</font> ( <font class="keywordtype">int</font> j = 0; j < 16; j++ )
00694 {
00695 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableq1">mLevelIndex</a>[ i ].push_back( 0 );
00696 }
00697
00698 }
00699
00700
00701 }
00702
00703 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableq2">mLevelInit</a> = <font class="keyword">true</font>;
00704 }
00705
<a name="l00706"></a><a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb4">00706</a> <font class="keywordtype">void</font> TerrainRenderable::_adjustRenderLevel( <font class="keywordtype">int</font> i )
00707 {
00708
00709 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen2">mRenderLevel</a> = i;
00710 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablea24">_alignNeighbors</a>();
00711
00712 }
00713
<a name="l00714"></a><a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablea24">00714</a> <font class="keywordtype">void</font> TerrainRenderable::_alignNeighbors()
00715 {
00716
00717 <font class="comment">//ensure that there aren't any gaps...</font>
00718
00719 <font class="keywordflow">for</font> ( <font class="keywordtype">int</font> i = 0; i < 4;i++ )
00720 {
00721 <font class="keywordflow">if</font> ( <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen4">mNeighbors</a>[ i ] != 0 && <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen4">mNeighbors</a>[ i ] -><a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen2">mRenderLevel</a> + 1 < <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen2">mRenderLevel</a> )
00722 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen4">mNeighbors</a>[ i ] -> <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb4">_adjustRenderLevel</a>( <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen2">mRenderLevel</a> - 1 );
00723 }
00724
00725 <font class="comment">/*</font>
00726 <font class="comment"></font>
00727 <font class="comment"> //always go up, rather than down...</font>
00728 <font class="comment"> if ( mNeighbors[ EAST ] != 0 && mNeighbors[ EAST ] ->mRenderLevel + 1 < mRenderLevel )</font>
00729 <font class="comment"> mNeighbors[ EAST ] -> _adjustRenderLevel( mRenderLevel - 1 );</font>
00730 <font class="comment"></font>
00731 <font class="comment"> if ( mNeighbors[ SOUTH ] != 0 && mNeighbors[ SOUTH ] ->mRenderLevel + 1 < mRenderLevel )</font>
00732 <font class="comment"> mNeighbors[ SOUTH ] -> _adjustRenderLevel( mRenderLevel - 1 );</font>
00733 <font class="comment"> */</font>
00734 }
00735
<a name="l00736"></a><a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb8">00736</a> <a class="code" href="namespaceOgre.html#a349">Real</a> TerrainRenderable::_calculateCFactor()
00737 {
00738 <a class="code" href="namespaceOgre.html#a349">Real</a> A, T;
00739
00740 A = ( Real ) <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen14">mNearPlane</a> / fabs( ( <a class="code" href="namespaceOgre.html#a349">Real</a> ) <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen17">mTopCoord</a> );
00741
00742 T = 2 * ( Real ) <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen15">mMaxPixelError</a> / ( Real ) <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen16">mVertResolution</a>;
00743
00744 <font class="keywordflow">return</font> A / T;
00745 }
00746
<a name="l00747"></a><a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablea19">00747</a> <font class="keywordtype">float</font> TerrainRenderable::getHeightAt( <font class="keywordtype">float</font> x, <font class="keywordtype">float</font> z )
00748 {
00749 <a class="code" href="classOgre_1_1Vector3.html">Vector3</a> start;
00750 <a class="code" href="classOgre_1_1Vector3.html">Vector3</a> end;
00751
00752 start.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m0">x</a> = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb1">_vertex</a>( 0, 0, 0 );
00753 start.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m1">y</a> = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb1">_vertex</a>( 0, 0, 1 );
00754 start.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m2">z</a> = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb1">_vertex</a>( 0, 0, 2 );
00755
00756 end.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m0">x</a> = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb1">_vertex</a>( <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen8">mSize</a> - 1, <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen8">mSize</a> - 1, 0 );
00757 end.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m1">y</a> = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb1">_vertex</a>( <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen8">mSize</a> - 1, <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen8">mSize</a> - 1, 1 );
00758 end.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m2">z</a> = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb1">_vertex</a>( <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen8">mSize</a> - 1, <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen8">mSize</a> - 1, 2 );
00759
00760 <font class="comment">/* Safety catch, if the point asked for is outside</font>
00761 <font class="comment"> * of this tile, it will ask the appropriate tile</font>
00762 <font class="comment"> */</font>
00763
00764 <font class="keywordflow">if</font> ( x < start.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m0">x</a> )
00765 {
00766 <font class="keywordflow">if</font> ( <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen4">mNeighbors</a>[ <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderables5Ogre_1_1TerrainRenderables3">WEST</a> ] != 0 )
00767 <font class="keywordflow">return</font> <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen4">mNeighbors</a>[ <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderables5Ogre_1_1TerrainRenderables3">WEST</a> ] ->getHeightAt( x, z );
00768 <font class="keywordflow">else</font>
00769 x = start.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m0">x</a>;
00770 }
00771
00772 <font class="keywordflow">if</font> ( x > end.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m0">x</a> )
00773 {
00774 <font class="keywordflow">if</font> ( <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen4">mNeighbors</a>[ <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderables5Ogre_1_1TerrainRenderables2">EAST</a> ] != 0 )
00775 <font class="keywordflow">return</font> <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen4">mNeighbors</a>[ <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderables5Ogre_1_1TerrainRenderables2">EAST</a> ] ->getHeightAt( x, z );
00776 <font class="keywordflow">else</font>
00777 x = end.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m0">x</a>;
00778 }
00779
00780 <font class="keywordflow">if</font> ( z < start.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m2">z</a> )
00781 {
00782 <font class="keywordflow">if</font> ( <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen4">mNeighbors</a>[ <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderables5Ogre_1_1TerrainRenderables0">NORTH</a> ] != 0 )
00783 <font class="keywordflow">return</font> <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen4">mNeighbors</a>[ <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderables5Ogre_1_1TerrainRenderables0">NORTH</a> ] ->getHeightAt( x, z );
00784 <font class="keywordflow">else</font>
00785 z = start.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m2">z</a>;
00786 }
00787
00788 <font class="keywordflow">if</font> ( z > end.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m2">z</a> )
00789 {
00790 <font class="keywordflow">if</font> ( <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen4">mNeighbors</a>[ <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderables5Ogre_1_1TerrainRenderables1">SOUTH</a> ] != 0 )
00791 <font class="keywordflow">return</font> <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen4">mNeighbors</a>[ <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderables5Ogre_1_1TerrainRenderables1">SOUTH</a> ] ->getHeightAt( x, z );
00792 <font class="keywordflow">else</font>
00793 z = end.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m2">z</a>;
00794 }
00795
00796
00797
00798 <font class="keywordtype">float</font> x_pct = ( x - start.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m0">x</a> ) / ( end.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m0">x</a> - start.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m0">x</a> );
00799 <font class="keywordtype">float</font> z_pct = ( z - start.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m2">z</a> ) / ( end.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m2">z</a> - start.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m2">z</a> );
00800
00801 <font class="keywordtype">float</font> x_pt = x_pct * ( float ) ( <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen8">mSize</a> - 1 );
00802 <font class="keywordtype">float</font> z_pt = z_pct * ( float ) ( <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen8">mSize</a> - 1 );
00803
00804 <font class="keywordtype">int</font> x_index = ( int ) x_pt;
00805 <font class="keywordtype">int</font> z_index = ( int ) z_pt;
00806
00807 x_pct = x_pt - x_index;
00808 z_pct = z_pt - z_index;
00809
00810 <font class="comment">//bilinear interpolate to find the height.</font>
00811
00812 <font class="keywordtype">float</font> t1 = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb1">_vertex</a>( x_index, z_index, 1 );
00813 <font class="keywordtype">float</font> t2 = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb1">_vertex</a>( x_index + 1, z_index, 1 );
00814 <font class="keywordtype">float</font> b1 = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb1">_vertex</a>( x_index, z_index + 1, 1 );
00815 <font class="keywordtype">float</font> b2 = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb1">_vertex</a>( x_index + 1, z_index + 1, 1 );
00816
00817 <font class="keywordtype">float</font> midpoint = (b1 + t2) / 2.0;
00818
00819 <font class="keywordflow">if</font> (x_pct + z_pct <= 1) {
00820 b2 = midpoint + (midpoint - t1);
00821 } <font class="keywordflow">else</font> {
00822 t1 = midpoint + (midpoint - b2);
00823 }
00824
00825 <font class="keywordtype">float</font> t = ( t1 * ( 1 - x_pct ) ) + ( t2 * ( x_pct ) );
00826 <font class="keywordtype">float</font> b = ( b1 * ( 1 - x_pct ) ) + ( b2 * ( x_pct ) );
00827
00828 <font class="keywordtype">float</font> h = ( t * ( 1 - z_pct ) ) + ( b * ( z_pct ) );
00829
00830 <font class="keywordflow">return</font> h;
00831 }
00832
<a name="l00833"></a><a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablea20">00833</a> <font class="keywordtype">bool</font> TerrainRenderable::intersectSegment( <font class="keyword">const</font> <a class="code" href="classOgre_1_1Vector3.html">Vector3</a> & start, <font class="keyword">const</font> <a class="code" href="classOgre_1_1Vector3.html">Vector3</a> & end, <a class="code" href="classOgre_1_1Vector3.html">Vector3</a> * result )
00834 {
00835 <a class="code" href="classOgre_1_1Vector3.html">Vector3</a> dir = end - start;
00836 <a class="code" href="classOgre_1_1Vector3.html">Vector3</a> ray = start;
00837
00838 <font class="comment">//special case...</font>
00839 <font class="keywordflow">if</font> ( dir.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m0">x</a> == 0 && dir.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m2">z</a> == 0 )
00840 {
00841 <font class="keywordflow">if</font> ( ray.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m1">y</a> <= <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablea19">getHeightAt</a>( ray.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m0">x</a>, ray.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m2">z</a> ) )
00842 {
00843 <font class="keywordflow">if</font> ( result != 0 )
00844 * result = start;
00845
00846 <font class="keywordflow">return</font> <font class="keyword">true</font>;
00847 }
00848 }
00849
00850 dir.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3a24">normalise</a>();
00851
00852 <font class="comment">//dir.x *= mScale.x;</font>
00853 <font class="comment">//dir.y *= mScale.y;</font>
00854 <font class="comment">//dir.z *= mScale.z;</font>
00855
00856 <font class="keyword">const</font> <a class="code" href="classOgre_1_1Vector3.html">Vector3</a> * corners = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablea6">getBoundingBox</a>().<a class="code" href="classOgre_1_1AxisAlignedBox.html#Ogre_1_1AxisAlignedBoxa11">getAllCorners</a>();
00857
00858 <font class="comment">//start with the next one...</font>
00859 ray += dir;
00860
00861
00862 <font class="keywordflow">while</font> ( ! ( ( ray.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m0">x</a> < corners[ 0 ].<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m0">x</a> ) ||
00863 ( ray.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m0">x</a> > corners[ 4 ].<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m0">x</a> ) ||
00864 ( ray.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m2">z</a> < corners[ 0 ].<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m2">z</a> ) ||
00865 ( ray.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m2">z</a> > corners[ 4 ].<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m2">z</a> ) ) )
00866 {
00867
00868
00869 <font class="keywordtype">float</font> h = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablea19">getHeightAt</a>( ray.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m0">x</a>, ray.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m2">z</a> );
00870
00871 <font class="keywordflow">if</font> ( ray.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m1">y</a> <= h )
00872 {
00873 <font class="keywordflow">if</font> ( result != 0 )
00874 * result = ray;
00875
00876 <font class="keywordflow">return</font> <font class="keyword">true</font>;
00877 }
00878
00879 <font class="keywordflow">else</font>
00880 {
00881 ray += dir;
00882 }
00883
00884 }
00885
00886 <font class="keywordflow">if</font> ( ray.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m0">x</a> < corners[ 0 ].<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m0">x</a> && <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen4">mNeighbors</a>[ <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderables5Ogre_1_1TerrainRenderables3">WEST</a> ] != 0 )
00887 <font class="keywordflow">return</font> <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen4">mNeighbors</a>[ <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderables5Ogre_1_1TerrainRenderables3">WEST</a> ] ->intersectSegment( ray, end, result );
00888 <font class="keywordflow">else</font> <font class="keywordflow">if</font> ( ray.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m2">z</a> < corners[ 0 ].<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m2">z</a> && <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen4">mNeighbors</a>[ <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderables5Ogre_1_1TerrainRenderables0">NORTH</a> ] != 0 )
00889 <font class="keywordflow">return</font> <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen4">mNeighbors</a>[ <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderables5Ogre_1_1TerrainRenderables0">NORTH</a> ] ->intersectSegment( ray, end, result );
00890 <font class="keywordflow">else</font> <font class="keywordflow">if</font> ( ray.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m0">x</a> > corners[ 4 ].<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m0">x</a> && <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen4">mNeighbors</a>[ <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderables5Ogre_1_1TerrainRenderables2">EAST</a> ] != 0 )
00891 <font class="keywordflow">return</font> <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen4">mNeighbors</a>[ <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderables5Ogre_1_1TerrainRenderables2">EAST</a> ] ->intersectSegment( ray, end, result );
00892 <font class="keywordflow">else</font> <font class="keywordflow">if</font> ( ray.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m2">z</a> > corners[ 4 ].<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m2">z</a> && <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen4">mNeighbors</a>[ <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderables5Ogre_1_1TerrainRenderables1">SOUTH</a> ] != 0 )
00893 <font class="keywordflow">return</font> <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen4">mNeighbors</a>[ <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderables5Ogre_1_1TerrainRenderables1">SOUTH</a> ] ->intersectSegment( ray, end, result );
00894 <font class="keywordflow">else</font>
00895 {
00896 <font class="keywordflow">if</font> ( result != 0 )
00897 * result = <a class="code" href="classOgre_1_1Vector3.html">Vector3</a>( -1, -1, -1 );
00898
00899 <font class="keywordflow">return</font> <font class="keyword">false</font>;
00900 }
00901 }
00902
<a name="l00903"></a><a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablea26">00903</a> <font class="keywordtype">void</font> TerrainRenderable::_generateVertexLighting( <font class="keyword">const</font> <a class="code" href="classOgre_1_1Vector3.html">Vector3</a> &sun, <a class="code" href="classOgre_1_1ColourValue.html">ColourValue</a> ambient )
00904 {
00905 <font class="keywordflow">if</font> ( !<a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen20">mColored</a> )
00906 {
00907 printf( <font class="stringliteral">"Can't generate terrain vertex lighting with out vertex colors enabled.\n"</font> );
00908 <font class="keywordflow">return</font> ;
00909 }
00910
00911
00912 <a class="code" href="classOgre_1_1Vector3.html">Vector3</a> pt;
00913 <a class="code" href="classOgre_1_1Vector3.html">Vector3</a> normal;
00914 <a class="code" href="classOgre_1_1Vector3.html">Vector3</a> light;
00915
00916 <font class="comment">//for each point in the terrain, see if it's in the line of sight for the sun.</font>
00917 <font class="keywordflow">for</font> ( <font class="keywordtype">int</font> i = 0; i < <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen8">mSize</a>; i++ )
00918 {
00919 <font class="keywordflow">for</font> ( <font class="keywordtype">int</font> j = 0; j < <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen8">mSize</a>; j++ )
00920 {
00921 <font class="comment">// printf( "Checking %f,%f,%f ", pt.x, pt.y, pt.z );</font>
00922 pt.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m0">x</a> = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb1">_vertex</a>( i, j, 0 );
00923 pt.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m1">y</a> = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb1">_vertex</a>( i, j, 1 );
00924 pt.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3m2">z</a> = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb1">_vertex</a>( i, j, 2 );
00925
00926 light = sun - pt;
00927
00928 light.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3a24">normalise</a>();
00929
00930 <font class="keywordflow">if</font> ( ! <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablea20">intersectSegment</a>( pt, sun, 0 ) )
00931 {
00932 <font class="comment">//</font>
00933 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablea18">_getNormalAt</a>( <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb1">_vertex</a>( i, j, 0 ), <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb1">_vertex</a>( i, j, 2 ), &normal );
00934
00935 <font class="keywordtype">float</font> l = light.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3a23">dotProduct</a>( normal );
00936
00937 <a class="code" href="classOgre_1_1ColourValue.html">ColourValue</a> v;
00938 v.<a class="code" href="classOgre_1_1ColourValue.html#Ogre_1_1ColourValuem0">r</a> = ambient.<a class="code" href="classOgre_1_1ColourValue.html#Ogre_1_1ColourValuem0">r</a> + l;
00939 v.<a class="code" href="classOgre_1_1ColourValue.html#Ogre_1_1ColourValuem1">g</a> = ambient.<a class="code" href="classOgre_1_1ColourValue.html#Ogre_1_1ColourValuem1">g</a> + l;
00940 v.<a class="code" href="classOgre_1_1ColourValue.html#Ogre_1_1ColourValuem2">b</a> = ambient.<a class="code" href="classOgre_1_1ColourValue.html#Ogre_1_1ColourValuem2">b</a> + l;
00941
00942 <font class="keywordflow">if</font> ( v.<a class="code" href="classOgre_1_1ColourValue.html#Ogre_1_1ColourValuem0">r</a> > 1 ) v.<a class="code" href="classOgre_1_1ColourValue.html#Ogre_1_1ColourValuem0">r</a> = 1;
00943
00944 <font class="keywordflow">if</font> ( v.<a class="code" href="classOgre_1_1ColourValue.html#Ogre_1_1ColourValuem1">g</a> > 1 ) v.<a class="code" href="classOgre_1_1ColourValue.html#Ogre_1_1ColourValuem1">g</a> = 1;
00945
00946 <font class="keywordflow">if</font> ( v.<a class="code" href="classOgre_1_1ColourValue.html#Ogre_1_1ColourValuem2">b</a> > 1 ) v.<a class="code" href="classOgre_1_1ColourValue.html#Ogre_1_1ColourValuem2">b</a> = 1;
00947
00948 <font class="keywordflow">if</font> ( v.<a class="code" href="classOgre_1_1ColourValue.html#Ogre_1_1ColourValuem0">r</a> < 0 ) v.<a class="code" href="classOgre_1_1ColourValue.html#Ogre_1_1ColourValuem0">r</a> = 0;
00949
00950 <font class="keywordflow">if</font> ( v.<a class="code" href="classOgre_1_1ColourValue.html#Ogre_1_1ColourValuem1">g</a> < 0 ) v.<a class="code" href="classOgre_1_1ColourValue.html#Ogre_1_1ColourValuem1">g</a> = 0;
00951
00952 <font class="keywordflow">if</font> ( v.<a class="code" href="classOgre_1_1ColourValue.html#Ogre_1_1ColourValuem2">b</a> < 0 ) v.<a class="code" href="classOgre_1_1ColourValue.html#Ogre_1_1ColourValuem2">b</a> = 0;
00953
00954 <a class="code" href="namespaceOgre.html#a53">RGBA</a> colour;
00955 Root::getSingleton().convertColourValue( v, &colour );
00956 <a class="code" href="classOgre_1_1HardwareVertexBufferSharedPtr.html">HardwareVertexBufferSharedPtr</a> vbuf =
00957 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen0">mTerrain</a>-><a class="code" href="classOgre_1_1VertexData.html#Ogre_1_1VertexDatam1">vertexBufferBinding</a>-><a class="code" href="classOgre_1_1VertexBufferBinding.html#Ogre_1_1VertexBufferBindinga6">getBuffer</a>(<a class="code" href="OgreTerrainRenderable_8cpp.html#a3">COLOUR_BINDING</a>);
00958 vbuf->writeData(<a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb0">_index</a>( i, j ) * <font class="keyword">sizeof</font>(<a class="code" href="namespaceOgre.html#a53">RGBA</a>), <font class="keyword">sizeof</font>(<a class="code" href="namespaceOgre.html#a53">RGBA</a>), &colour);
00959 }
00960
00961 <font class="keywordflow">else</font>
00962 {
00963 <a class="code" href="namespaceOgre.html#a53">RGBA</a> colour;
00964 Root::getSingleton().convertColourValue( ambient, &colour );
00965
00966 <a class="code" href="classOgre_1_1HardwareVertexBufferSharedPtr.html">HardwareVertexBufferSharedPtr</a> vbuf =
00967 <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen0">mTerrain</a>-><a class="code" href="classOgre_1_1VertexData.html#Ogre_1_1VertexDatam1">vertexBufferBinding</a>-><a class="code" href="classOgre_1_1VertexBufferBinding.html#Ogre_1_1VertexBufferBindinga6">getBuffer</a>(<a class="code" href="OgreTerrainRenderable_8cpp.html#a3">COLOUR_BINDING</a>);
00968 vbuf->writeData(<a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderableb0">_index</a>( i, j ) * <font class="keyword">sizeof</font>(<a class="code" href="namespaceOgre.html#a53">RGBA</a>), <font class="keyword">sizeof</font>(<a class="code" href="namespaceOgre.html#a53">RGBA</a>), &colour);
00969 }
00970
00971 }
00972
00973 }
00974
00975 printf( <font class="stringliteral">"."</font> );
00976 }
00977 <font class="comment">//-----------------------------------------------------------------------</font>
<a name="l00978"></a><a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablea27">00978</a> <a class="code" href="namespaceOgre.html#a349">Real</a> TerrainRenderable::getSquaredViewDepth(<font class="keyword">const</font> <a class="code" href="classOgre_1_1Camera.html">Camera</a>* cam)<font class="keyword"> const</font>
00979 <font class="keyword"></font>{
00980 <a class="code" href="classOgre_1_1Vector3.html">Vector3</a> diff = <a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablen6">mCenter</a> - cam-><a class="code" href="classOgre_1_1Camera.html#Ogre_1_1OctreeCameraa54">getDerivedPosition</a>();
00981 <font class="comment">// Use squared length to avoid square root</font>
00982 <font class="keywordflow">return</font> diff.<a class="code" href="classOgre_1_1Vector3.html#Ogre_1_1Vector3a22">squaredLength</a>();
00983 }
00984
00985 <font class="comment">//-----------------------------------------------------------------------</font>
<a name="l00986"></a><a class="code" href="classOgre_1_1TerrainRenderable.html#Ogre_1_1TerrainRenderablea29">00986</a> <font class="keyword">const</font> <a class="code" href="namespaceOgre.html#a56">LightList</a>& TerrainRenderable::getLights(<font class="keywordtype">void</font>)<font class="keyword"> const</font>
00987 <font class="keyword"></font>{
00988 <font class="keywordflow">return</font> <a class="code" href="classOgre_1_1MovableObject.html#Ogre_1_1WireBoundingBoxn9">mParentNode</a>-><a class="code" href="classOgre_1_1Node.html#Ogre_1_1Nodea59">getLights</a>();
00989 }
00990
00991 } <font class="comment">//namespace</font>
</pre></div><p>
Copyright © 2002-2003 by The OGRE Team<br />
Last modified Wed Jan 21 00:10:29 2004
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