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doxygen="_cgi:http://www.nevrax.org/cgi-bin/nel-search.cgi" href="http://www.nevrax.org/cgi-bin/nel-search.cgi">Search</a> </center> +<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 +</pre></div> + +<!-- footer --> +<BR><FONT Size=+5> </FONT> +</TD> +<TD WIDTH=15><IMG SRC=http://www.nevrax.org/inc/img/pixel.gif WIDTH=15 HEIGHT=15 BORDER=0 ALT=""></TD> +</TR> +</TABLE> +</BODY> +</HTML> |