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+<hr><h1>driver_opengl_light.cpp</h1><a href="driver__opengl__light_8cpp.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="stdopengl_8h.html">stdopengl.h</a>"</font>
+00027
+00028 <font class="preprocessor">#include "<a class="code" href="light_8h.html">3d/light.h</a>"</font>
+00029
+00030 <font class="keyword">namespace </font>NL3D
+00031 {
+00032
+00033
+00034 <font class="comment">// ***************************************************************************</font>
+<a name="l00035"></a><a class="code" href="classNL3D_1_1CDriverGL.html#a74">00035</a> <a class="code" href="types__nl_8h.html#a13">uint</a> CDriverGL::getMaxLight ()<font class="keyword"> const</font>
+00036 <font class="keyword"></font>{
+00037 <font class="comment">// return min(maxLight supported by openGL, MaxLight=8).</font>
+00038 <font class="keywordflow">return</font> <a class="code" href="classNL3D_1_1CDriverGL.html#o30">_MaxDriverLight</a>;
+00039 }
+00040
+00041 <font class="comment">// ***************************************************************************</font>
+00042
+<a name="l00043"></a><a class="code" href="classNL3D_1_1CDriverGL.html#a75">00043</a> <font class="keywordtype">void</font> CDriverGL::setLight (<a class="code" href="types__nl_8h.html#a5">uint8</a> num, <font class="keyword">const</font> CLight&amp; light)
+00044 {
+00045 <font class="comment">// Check light count is good</font>
+00046 <font class="comment">// nlassert (num&lt;_MaxDriverLight);</font>
+00047
+00048 <font class="comment">// Set the light</font>
+00049 <font class="keywordflow">if</font> (num&lt;<a class="code" href="classNL3D_1_1CDriverGL.html#o30">_MaxDriverLight</a>)
+00050 {
+00051 <font class="comment">// GL light number</font>
+00052 GLenum lightNum=(GLenum)(GL_LIGHT0+num);
+00053
+00054 <font class="comment">// Get light mode</font>
+00055 CLight::TLightMode mode=light.getMode ();
+00056
+00057 <font class="comment">// Copy the mode</font>
+00058 <a class="code" href="classNL3D_1_1CDriverGL.html#o32">_LightMode</a>[num]=mode;
+00059
+00060 <font class="comment">// Set the ambiant color</font>
+00061 GLfloat colorGL[4];
+00062 CRGBA colorNeL=light.getAmbiant ();
+00063 colorGL[0]=(float)colorNeL.R/255.f;
+00064 colorGL[1]=(float)colorNeL.G/255.f;
+00065 colorGL[2]=(float)colorNeL.B/255.f;
+00066 colorGL[3]=1.f;
+00067 glLightfv (lightNum, GL_AMBIENT, colorGL);
+00068
+00069 <font class="comment">// Set the diffuse color</font>
+00070 colorNeL=light.getDiffuse ();
+00071 colorGL[0]=(float)colorNeL.R/255.f;
+00072 colorGL[1]=(float)colorNeL.G/255.f;
+00073 colorGL[2]=(float)colorNeL.B/255.f;
+00074 colorGL[3]=1.f;
+00075 glLightfv (lightNum, GL_DIFFUSE, colorGL);
+00076
+00077 <font class="comment">// Set the specular color</font>
+00078 colorNeL=light.getSpecular ();
+00079 colorGL[0]=(float)colorNeL.R/255.f;
+00080 colorGL[1]=(float)colorNeL.G/255.f;
+00081 colorGL[2]=(float)colorNeL.B/255.f;
+00082 colorGL[3]=1.f;
+00083 glLightfv (lightNum, GL_SPECULAR, colorGL);
+00084
+00085 <font class="comment">// Set light attenuation</font>
+00086 glLightf (lightNum, GL_CONSTANT_ATTENUATION, light.getConstantAttenuation());
+00087 glLightf (lightNum, GL_LINEAR_ATTENUATION, light.getLinearAttenuation());
+00088 glLightf (lightNum, GL_QUADRATIC_ATTENUATION, light.getQuadraticAttenuation());
+00089
+00090 <font class="comment">// Set the position</font>
+00091 <font class="keywordflow">if</font> ((mode==CLight::DirectionalLight)||(mode==CLight::SpotLight))
+00092 {
+00093 <font class="comment">// Get the direction of the light</font>
+00094 <a class="code" href="classNL3D_1_1CDriverGL.html#o34">_WorldLightDirection</a>[num]=light.getDirection ();
+00095 }
+00096
+00097 <font class="keywordflow">if</font> (mode!=CLight::DirectionalLight)
+00098 {
+00099 <font class="comment">// Get the position of the light</font>
+00100 <a class="code" href="classNL3D_1_1CDriverGL.html#o33">_WorldLightPos</a>[num]=light.getPosition ();
+00101 }
+00102
+00103 <font class="keywordflow">if</font> (mode==CLight::SpotLight)
+00104 {
+00105 <font class="comment">// Get the exponent of the spot</font>
+00106 <font class="keywordtype">float</font> exponent=light.getExponent ();
+00107
+00108 <font class="comment">// Set it</font>
+00109 glLightf (lightNum, GL_SPOT_EXPONENT, exponent);
+00110
+00111 <font class="comment">// Get the cutoff of the spot</font>
+00112 <font class="keywordtype">float</font> cutoff=180.f*(light.getCutoff ()/(float)NLMISC::Pi);
+00113
+00114 <font class="comment">// Set it</font>
+00115 glLightf (lightNum, GL_SPOT_CUTOFF, cutoff);
+00116 }
+00117 <font class="keywordflow">else</font>
+00118 {
+00119 <font class="comment">// Disactive spot properties</font>
+00120 glLighti (lightNum, GL_SPOT_CUTOFF, 180);
+00121 glLighti (lightNum, GL_SPOT_EXPONENT, 0);
+00122 }
+00123
+00124 <a class="code" href="classNL3D_1_1CDriverGL.html#o7">_ViewMatrixSetupDirty</a>=<font class="keyword">true</font>;
+00125 }
+00126 }
+00127
+00128 <font class="comment">// ***************************************************************************</font>
+00129
+<a name="l00130"></a><a class="code" href="classNL3D_1_1CDriverGL.html#a76">00130</a> <font class="keywordtype">void</font> CDriverGL::enableLight (<a class="code" href="types__nl_8h.html#a5">uint8</a> num, <font class="keywordtype">bool</font> enable)
+00131 {
+00132 <font class="comment">// Check light count is good</font>
+00133 <font class="comment">// nlassert (num&lt;_MaxDriverLight);</font>
+00134
+00135 <font class="comment">// Enable glLight</font>
+00136 <font class="keywordflow">if</font> (num&lt;<a class="code" href="classNL3D_1_1CDriverGL.html#o30">_MaxDriverLight</a>)
+00137 {
+00138 <font class="comment">// Enable the light</font>
+00139 <a class="code" href="classNL3D_1_1CDriverGL.html#o31">_LightEnable</a>[num]=enable;
+00140
+00141 <font class="comment">// Enable GL</font>
+00142 <font class="keywordflow">if</font> (enable)
+00143 glEnable ((GLenum)(GL_LIGHT0+num));
+00144 <font class="keywordflow">else</font>
+00145 glDisable ((GLenum)(GL_LIGHT0+num));
+00146 }
+00147 }
+00148
+00149 <font class="comment">// ***************************************************************************</font>
+00150
+<a name="l00151"></a><a class="code" href="classNL3D_1_1CDriverGL.html#a78">00151</a> <font class="keywordtype">void</font> CDriverGL::setAmbientColor (CRGBA color)
+00152 {
+00153 <font class="comment">// Gl array</font>
+00154 GLfloat array[4];
+00155 array[0]=(float)color.R/255.f;
+00156 array[1]=(float)color.G/255.f;
+00157 array[2]=(float)color.B/255.f;
+00158 array[3]=1.f;
+00159
+00160 <font class="comment">// Set the color</font>
+00161 glLightModelfv (GL_LIGHT_MODEL_AMBIENT, array);
+00162 }
+00163
+00164 <font class="comment">// ***************************************************************************</font>
+00165
+00166 } <font class="comment">// NL3D</font>
+</pre></div>
+
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