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class="qindexRef" 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>driver_opengl_matrix.cpp</h1><a href="driver_opengl_matrix_cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001 +00007 <font class="comment">/* Copyright, 2000 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="driver_opengl_h.html">driver_opengl.h</a>"</font> +00027 +00028 <font class="keyword">namespace</font> NL3D { +00029 +<a name="l00030"></a><a class="code" href="class_NL3D__CDriverGL.html#a15">00030</a> <font class="keywordtype">void</font> CDriverGL::setFrustum(<font class="keywordtype">float</font> left, <font class="keywordtype">float</font> right, <font class="keywordtype">float</font> bottom, <font class="keywordtype">float</font> top, <font class="keywordtype">float</font> znear, <font class="keywordtype">float</font> zfar, <font class="keywordtype">bool</font> perspective)<font class="keyword"> +</font>00031 <font class="keyword"></font>{ +00032 glMatrixMode(GL_PROJECTION); +00033 glLoadIdentity(); +00034 <font class="keywordflow">if</font> (perspective) +00035 { +00036 glFrustum(left,right,bottom,top,znear,zfar); +00037 } +00038 <font class="keywordflow">else</font> +00039 { +00040 glOrtho(left,right,bottom,top,znear,zfar); +00041 } +00042 glMatrixMode(GL_MODELVIEW); +00043 } +00044 +00045 <font class="comment">// --------------------------------------------------</font> +00046 +<a name="l00047"></a><a class="code" href="class_NL3D__CDriverGL.html#a16">00047</a> <font class="keywordtype">void</font> CDriverGL::setupViewMatrix(<font class="keyword">const</font> CMatrix& mtx)<font class="keyword"> +</font>00048 <font class="keyword"></font>{ +00049 <font class="comment">// Setup the matrix to transform the CScene basis in openGL basis.</font> +00050 CMatrix changeBasis; +00051 CVector I(1,0,0); +00052 CVector J(0,0,-1); +00053 CVector K(0,1,0); +00054 +00055 changeBasis.identity(); +00056 changeBasis.setRot(I,J,K, <font class="keyword">true</font>); +00057 <font class="comment">// Optimize it...</font> +00058 changeBasis*= mtx; +00059 _ViewMtx=changeBasis; +00060 +00061 _MatrixSetupDirty= <font class="keyword">true</font>; +00062 _ViewMatrixSetupDirty= <font class="keyword">true</font>; +00063 } +00064 +<a name="l00065"></a><a class="code" href="class_NL3D__CDriverGL.html#a18">00065</a> CMatrix CDriverGL::getViewMatrix(<font class="keywordtype">void</font>)<font class="keyword"> const +</font>00066 <font class="keyword"></font>{ +00067 <font class="comment">// Setup the matrix to transform the CScene basis in openGL basis.</font> +00068 CMatrix changeBasis; +00069 CVector I(1,0,0); +00070 CVector J(0,0,1); +00071 CVector K(0,-1,0); +00072 +00073 changeBasis.identity(); +00074 changeBasis.setRot(I,J,K, <font class="keyword">true</font>); +00075 <font class="keywordflow">return</font>(changeBasis*_ViewMtx); +00076 } +00077 +<a name="l00078"></a><a class="code" href="class_NL3D__CDriverGL.html#a17">00078</a> <font class="keywordtype">void</font> CDriverGL::setupModelMatrix(<font class="keyword">const</font> CMatrix& mtx, uint8 n)<font class="keyword"> +</font>00079 <font class="keyword"></font>{ +00080 <font class="comment">// Check args</font> +00081 <a class="code" href="debug_h.html#a6">nlassert</a> (n<IDriver::MaxModelMatrix); +00082 +00083 +00084 <font class="comment">// Dirt flags.</font> +00085 _MatrixSetupDirty= <font class="keyword">true</font>; +00086 <font class="comment">// because we don't know for which (skin/normal/paletteSkin) mode this will be used, we must set the 2 flags.</font> +00087 _ModelViewMatrixDirty.set(n); +00088 _ModelViewMatrixDirtyPaletteSkin.set(n); +00089 +00090 +00091 <font class="comment">// Put the matrix in the opengl world, and store it.</font> +00092 _ModelViewMatrix[n]= _ViewMtx*mtx; +00093 } +00094 +00095 +00096 +00097 <font class="comment">// ***************************************************************************</font> +<a name="l00098"></a><a class="code" href="class_NL3D__CDriverGL__CMatrix3x4.html#a0">00098</a> <font class="keywordtype">void</font> CDriverGL::CMatrix3x4::set(<font class="keyword">const</font> CMatrix &mat)<font class="keyword"> +</font>00099 <font class="keyword"></font>{ +00100 <font class="keyword">const</font> <font class="keywordtype">float</font> *m =mat.get(); +00101 a11= m[0]; a12= m[4]; a13= m[8] ; a14= m[12]; +00102 a21= m[1]; a22= m[5]; a23= m[9] ; a24= m[13]; +00103 a31= m[2]; a32= m[6]; a33= m[10]; a34= m[14]; +00104 } +00105 +00106 +00107 } <font class="comment">// NL3D</font> +</div></pre> + +<!-- 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> |