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<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>
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