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<hr><h1>cube_map_builder.cpp</h1><a href="cube__map__builder_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001
00007 <font class="comment">/* Copyright, 2000-2002 Nevrax Ltd.</font>
00008 <font class="comment"> *</font>
00009 <font class="comment"> * This file is part of NEVRAX NEL.</font>
00010 <font class="comment"> * NEVRAX NEL is free software; you can redistribute it and/or modify</font>
00011 <font class="comment"> * it under the terms of the GNU General Public License as published by</font>
00012 <font class="comment"> * the Free Software Foundation; either version 2, or (at your option)</font>
00013 <font class="comment"> * any later version.</font>
00014 <font class="comment"></font>
00015 <font class="comment"> * NEVRAX NEL is distributed in the hope that it will be useful, but</font>
00016 <font class="comment"> * WITHOUT ANY WARRANTY; without even the implied warranty of</font>
00017 <font class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</font>
00018 <font class="comment"> * General Public License for more details.</font>
00019 <font class="comment"></font>
00020 <font class="comment"> * You should have received a copy of the GNU General Public License</font>
00021 <font class="comment"> * along with NEVRAX NEL; see the file COPYING. If not, write to the</font>
00022 <font class="comment"> * Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,</font>
00023 <font class="comment"> * MA 02111-1307, USA.</font>
00024 <font class="comment"> */</font>
00025
00026 <font class="preprocessor">#include "<a class="code" href="std3d_8h.html">std3d.h</a>"</font>
00027
00028
00029
00030 <font class="preprocessor">#include "<a class="code" href="cube__map__builder_8h.html">3d/cube_map_builder.h</a>"</font>
00031 <font class="preprocessor">#include "<a class="code" href="texture__cube_8h.html">3d/texture_cube.h</a>"</font>
00032 <font class="preprocessor">#include "<a class="code" href="texture__mem_8h.html">3d/texture_mem.h</a>"</font>
00033 <font class="preprocessor">#include "<a class="code" href="vector_8h.html">nel/misc/vector.h</a>"</font>
00034 <font class="preprocessor">#include "<a class="code" href="rgba_8h.html">nel/misc/rgba.h</a>"</font>
00035
00036
00037
00038
00039 <font class="keyword">namespace </font>NL3D
00040 {
00041
00042
00043 <font class="comment">// utility function : build a side of a cube map</font>
00044 <font class="keyword">static</font> uint8 *<a class="code" href="namespaceNL3D.html#a319">BuildCubeMapTex</a>(<font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> &start,
00045 <font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> &uDir,
00046 <font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> &vDir,
00047 uint size,
00048 ICubeMapFunctor &f
00049 )
00050 {
00051 <a class="code" href="classNLMISC_1_1CRGBA.html">NLMISC::CRGBA</a> *map = <font class="keyword">new</font> <a class="code" href="classNLMISC_1_1CRGBA.html">NLMISC::CRGBA</a>[size * size];
00052 NLMISC::CRGBA *destTexel = map;
00053 <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> currN = start;
00054 <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> uStep = (2.f / size) * uDir;
00055 <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> vStep = (2.f / size) * vDir;
00056
00057 <font class="keywordflow">for</font> (uint <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a> = 0; <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a> < size; ++<a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>)
00058 {
00059 <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> hCurrN = currN;
00060 <font class="keywordflow">for</font> (uint <a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a> = 0; <a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a> < size; ++<a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>)
00061 {
00062 destTexel[<a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a> + <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a> *size] = f(hCurrN.<a class="code" href="classNLMISC_1_1CVector.html#z331_5">normed</a>());
00063 hCurrN += uStep;
00064 }
00065 currN += vStep;
00066 }
00067 <font class="keywordflow">return</font> (uint8 *) map;
00068 }
00069
00070 <font class="comment">// utility function : build a side of a cube map, with luminance only</font>
00071 <font class="keyword">static</font> uint8 *<a class="code" href="namespaceNL3D.html#a320">BuildCubeMapTexLuminance</a>(<font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> &start,
00072 <font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> &uDir,
00073 <font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> &vDir,
00074 uint size,
00075 ICubeMapFunctor &f
00076 )
00077 {
00078 uint8 *map = <font class="keyword">new</font> uint8[size * size];
00079 uint8 *destTexel = map;
00080 <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> currN = start;
00081 <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> uStep = (2.f / size) * uDir;
00082 <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> vStep = (2.f / size) * vDir;
00083
00084 <font class="keywordflow">for</font> (uint <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a> = 0; <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a> < size; ++<a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a>)
00085 {
00086 <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> hCurrN = currN;
00087 <font class="keywordflow">for</font> (uint <a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a> = 0; <a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a> < size; ++<a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a>)
00088 {
00089 destTexel[<a class="code" href="driver__opengl__extension__def_8h.html#a364">x</a> + <a class="code" href="driver__opengl__extension__def_8h.html#a365">y</a> *size] = f(hCurrN.<a class="code" href="classNLMISC_1_1CVector.html#z331_5">normed</a>()).A;
00090 hCurrN += uStep;
00091 }
00092 currN += vStep;
00093 }
00094 <font class="keywordflow">return</font> map;
00095 }
00096
00097
00098
00099 CTextureCube *<a class="code" href="namespaceNL3D.html#a321">BuildCubeMap</a>(sint mapSize, ICubeMapFunctor &f, <font class="keywordtype">bool</font> luminanceOnly <font class="comment">/* = false*/</font>, <font class="keyword">const</font> std::string &shareName <font class="comment">/* = "" */</font>)
00100 {
00101 std::auto_ptr<CTextureCube> cubeMap(<font class="keyword">new</font> CTextureCube);
00102 std::auto_ptr<CTextureMem> faces[6];
00103
00105 <font class="keyword">static</font> <font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> start[] =
00106 {
00107 <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a>(1, 1, 1),
00108 <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a>(-1, 1, -1),
00109 <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a>(-1, 1, -1),
00110 <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a>(-1, -1, 1),
00111 <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a>(-1, 1, 1),
00112 <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a>(1, 1, -1)
00113 };
00114
00115
00116 <font class="keyword">static</font> <font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> uDir[] =
00117 {
00118 - <a class="code" href="classNLMISC_1_1CVector.html#p3">NLMISC::CVector::K</a>,
00119 <a class="code" href="classNLMISC_1_1CVector.html#p3">NLMISC::CVector::K</a>,
00120 <a class="code" href="classNLMISC_1_1CVector.html#p1">NLMISC::CVector::I</a>,
00121 <a class="code" href="classNLMISC_1_1CVector.html#p1">NLMISC::CVector::I</a>,
00122 <a class="code" href="classNLMISC_1_1CVector.html#p1">NLMISC::CVector::I</a>,
00123 -<a class="code" href="classNLMISC_1_1CVector.html#p1">NLMISC::CVector::I</a>,
00124 };
00125
00126 <font class="keyword">static</font> <font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a> vDir[] =
00127 {
00128 - <a class="code" href="classNLMISC_1_1CVector.html#p2">NLMISC::CVector::J</a>,
00129 - <a class="code" href="classNLMISC_1_1CVector.html#p2">NLMISC::CVector::J</a>,
00130 <a class="code" href="classNLMISC_1_1CVector.html#p3">NLMISC::CVector::K</a>,
00131 - <a class="code" href="classNLMISC_1_1CVector.html#p3">NLMISC::CVector::K</a>,
00132 - <a class="code" href="classNLMISC_1_1CVector.html#p2">NLMISC::CVector::J</a>,
00133 - <a class="code" href="classNLMISC_1_1CVector.html#p2">NLMISC::CVector::J</a>,
00134 };
00135
00136
00137
00138 uint k;
00139
00141 <font class="keywordflow">for</font> (k = 0; k < 6; ++k)
00142 {
00143 faces[k].reset(<font class="keyword">new</font> CTextureMem);
00144 uint8 *map = luminanceOnly ? <a class="code" href="namespaceNL3D.html#a320">BuildCubeMapTexLuminance</a>(start[k], uDir[k], vDir[k], mapSize, f)
00145 : <a class="code" href="namespaceNL3D.html#a319">BuildCubeMapTex</a>(start[k], uDir[k], vDir[k], mapSize, f);
00146 faces[k]->setPointer(map,
00147 mapSize * mapSize * <font class="keyword">sizeof</font>(uint8) * (luminanceOnly ? 1 : 4),
00148 <font class="keyword">true</font>,
00149 <font class="keyword">false</font>,
00150 mapSize,
00151 mapSize,
00152 luminanceOnly ? CBitmap::Luminance : CBitmap::RGBA
00153 );
00154 <font class="keywordflow">if</font> (!shareName.empty())
00155 {
00156 faces[k]->setShareName(shareName + (<font class="keywordtype">char</font>) (<font class="charliteral">'0'</font> + k));
00157 }
00158 }
00159
00160 <font class="keyword">static</font> <font class="keyword">const</font> CTextureCube::TFace toTC[] = { CTextureCube::positive_x, CTextureCube::negative_x,
00161 CTextureCube::positive_z, CTextureCube::negative_z,
00162 CTextureCube::negative_y, CTextureCube::positive_y };
00164 <font class="keywordflow">for</font> (k = 0; k < 6; ++k)
00165 {
00166 cubeMap->setTexture(toTC[k], faces[k].release());
00167 }
00168
00169 cubeMap->setNoFlip(); <font class="comment">// keep faces texture as it</font>
00170
00171 <font class="keywordflow">return</font> cubeMap.release();
00172 }
00173
00174
00175
00176
00177
00178
00179
00180 } <font class="comment">// NL3D</font>
00181
00182
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