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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& light)
00044 {
00045 <font class="comment">// Check light count is good</font>
00046 <font class="comment">// nlassert (num<_MaxDriverLight);</font>
00047
00048 <font class="comment">// Set the light</font>
00049 <font class="keywordflow">if</font> (num<<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<_MaxDriverLight);</font>
00134
00135 <font class="comment">// Enable glLight</font>
00136 <font class="keywordflow">if</font> (num<<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>
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