00001 /*************************************************************************** 00002 * Copyright (C) 1998-2009 by authors (see AUTHORS.txt ) * 00003 * * 00004 * This file is part of LuxRender. * 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.net * 00021 ***************************************************************************/ 00022 00023 #include "sampling.h" 00024 #include "paramset.h" 00025 #include "film.h" 00026 00027 namespace lux 00028 { 00029 00030 // Dade - HilbertPixelSampler Declarations 00031 class HilbertPixelSampler : public PixelSampler { 00032 public: 00033 // HilbertPixelSampler Public Methods 00034 HilbertPixelSampler( 00035 int xStart, int xEnd, 00036 int yStart, int yEnd); 00037 virtual ~HilbertPixelSampler() { } 00038 00039 virtual u_int GetTotalPixels(); 00040 virtual bool GetNextPixel(int &xPos, int &yPos, u_int *use_pos); 00041 00042 private: 00043 void HilberCurve( 00044 int n, 00045 int xo, int yo, 00046 int xd, int yd, int xp, int yp, 00047 int xEnd, int yEnd); 00048 00049 // HilbertPixelSampler Private Data 00050 u_int TotalPx; 00051 00052 vector<PxLoc> Pxa; // pixel coordinate cache 00053 }; 00054 00055 }//namespace lux