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Documentation                       Search   driver_opengl_light.cpp Go to the documentation of this file. /* Copyright, 2000 Nevrax Ltd. * * This file is part of NEVRAX NEL. * NEVRAX NEL is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * NEVRAX NEL is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * You should have received a copy of the GNU General Public License * along with NEVRAX NEL; see the file COPYING. If not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, * MA 02111-1307, USA. */ #include "stdopengl.h" #include "3d/light.h" namespace NL3D { // *************************************************************************** uint CDriverGL::getMaxLight () const { // return min(maxLight supported by openGL, MaxLight=8). return _MaxDriverLight; } // *************************************************************************** void CDriverGL::setLight (uint8 num, const CLight& light) { // Check light count is good // nlassert (num<_MaxDriverLight); // Set the light if (num<_MaxDriverLight) { // GL light number GLenum lightNum=(GLenum)(GL_LIGHT0+num); // Get light mode CLight::TLightMode mode=light.getMode (); // Copy the mode _LightMode[num]=mode; // Set the ambiant color GLfloat colorGL[4]; CRGBA colorNeL=light.getAmbiant (); colorGL[0]=(float)colorNeL.R/255.f; colorGL[1]=(float)colorNeL.G/255.f; colorGL[2]=(float)colorNeL.B/255.f; colorGL[3]=1.f; glLightfv (lightNum, GL_AMBIENT, colorGL); // Set the diffuse color colorNeL=light.getDiffuse (); colorGL[0]=(float)colorNeL.R/255.f; colorGL[1]=(float)colorNeL.G/255.f; colorGL[2]=(float)colorNeL.B/255.f; colorGL[3]=1.f; glLightfv (lightNum, GL_DIFFUSE, colorGL); // Set the specular color colorNeL=light.getSpecular (); colorGL[0]=(float)colorNeL.R/255.f; colorGL[1]=(float)colorNeL.G/255.f; colorGL[2]=(float)colorNeL.B/255.f; colorGL[3]=1.f; glLightfv (lightNum, GL_SPECULAR, colorGL); // Set light attenuation glLightf (lightNum, GL_CONSTANT_ATTENUATION, light.getConstantAttenuation()); glLightf (lightNum, GL_LINEAR_ATTENUATION, light.getLinearAttenuation()); glLightf (lightNum, GL_QUADRATIC_ATTENUATION, light.getQuadraticAttenuation()); // Set the position if ((mode==CLight::DirectionalLight)||(mode==CLight::SpotLight)) { // Get the direction of the light _WorldLightDirection[num]=light.getDirection (); } if (mode!=CLight::DirectionalLight) { // Get the position of the light _WorldLightPos[num]=light.getPosition (); } if (mode==CLight::SpotLight) { // Get the exponent of the spot float exponent=light.getExponent (); // Set it glLightf (lightNum, GL_SPOT_EXPONENT, exponent); // Get the cutoff of the spot float cutoff=180.f*(light.getCutoff ()/(float)NLMISC::Pi); // Set it glLightf (lightNum, GL_SPOT_CUTOFF, cutoff); } else { // Disactive spot properties glLighti (lightNum, GL_SPOT_CUTOFF, 180); glLighti (lightNum, GL_SPOT_EXPONENT, 0); } _ViewMatrixSetupDirty=true; } } // *************************************************************************** void CDriverGL::enableLight (uint8 num, bool enable) { // Check light count is good // nlassert (num<_MaxDriverLight); // Enable glLight if (num<_MaxDriverLight) { // Enable the light _LightEnable[num]=enable; // Enable GL if (enable) glEnable ((GLenum)(GL_LIGHT0+num)); else glDisable ((GLenum)(GL_LIGHT0+num)); } } // *************************************************************************** void CDriverGL::setAmbientColor (CRGBA color) { // Gl array GLfloat array[4]; array[0]=(float)color.R/255.f; array[1]=(float)color.G/255.f; array[2]=(float)color.B/255.f; array[3]=1.f; // Set the color glLightModelfv (GL_LIGHT_MODEL_AMBIENT, array); } // *************************************************************************** } // NL3D