00001 /*************************************************************************** 00002 * Copyright (C) 1998-2007 by authors (see AUTHORS.txt ) * 00003 * * 00004 * This file is part of Lux Renderer. * 00005 * * 00006 * Lux Renderer is free software; you can redistribute it and/or modify * 00007 * it under the terms of the GNU General Public License as published by * 00008 * the Free Software Foundation; either version 3 of the License, or * 00009 * (at your option) any later version. * 00010 * * 00011 * Lux Renderer is distributed in the hope that it will be useful, * 00012 * but WITHOUT ANY WARRANTY; without even the implied warranty of * 00013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * 00014 * GNU General Public License for more details. * 00015 * * 00016 * You should have received a copy of the GNU General Public License * 00017 * along with this program. If not, see <http://www.gnu.org/licenses/>. * 00018 * * 00019 * This project is based on PBRT ; see http://www.pbrt.org * 00020 * Lux Renderer website : http://www.luxrender.org * 00021 ***************************************************************************/ 00022 00023 #ifndef LUX_RGBILLUMSPD_H 00024 #define LUX_RGBILLUMSPD_H 00025 // rgbillum.h* 00026 #include "lux.h" 00027 #include "spectrum.h" 00028 #include "spd.h" 00029 00030 namespace lux 00031 { 00032 00033 // illuminant SPD, from RGB color, using smits conversion, reconstructed using linear interpolation 00034 class RGBIllumSPD : public SPD { 00035 public: 00036 RGBIllumSPD() : SPD() { 00037 init(Spectrum(1.f)); 00038 } 00039 00040 RGBIllumSPD(Spectrum s) : SPD() { 00041 init(s); 00042 } 00043 00044 ~RGBIllumSPD() {} 00045 00046 protected: 00047 void AddWeighted(float w, float *c) { 00048 for(int i=0; i<nSamples; i++) { 00049 samples[i] += c[i] * w; 00050 } 00051 } 00052 00053 void init(Spectrum s); 00054 00055 private: 00056 }; 00057 00058 }//namespace lux 00059 00060 #endif // LUX_RGBILLUMSPD_H