File List
include/voreen/core/datastructures/volume/bricking/errorlodselector.h

00001 /**********************************************************************
00002  *                                                                    *
00003  * Voreen - The Volume Rendering Engine                               *
00004  *                                                                    *
00005  * Copyright (C) 2005-2010 The Voreen Team. <http://www.voreen.org>   *
00006  *                                                                    *
00007  * This file is part of the Voreen software package. Voreen is free   *
00008  * software: you can redistribute it and/or modify it under the terms *
00009  * of the GNU General Public License version 2 as published by the    *
00010  * Free Software Foundation.                                          *
00011  *                                                                    *
00012  * Voreen is distributed in the hope that it will be useful,          *
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of     *
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the       *
00015  * GNU General Public License for more details.                       *
00016  *                                                                    *
00017  * You should have received a copy of the GNU General Public License  *
00018  * in the file "LICENSE.txt" along with this program.                 *
00019  * If not, see <http://www.gnu.org/licenses/>.                        *
00020  *                                                                    *
00021  * The authors reserve all rights not expressly granted herein. For   *
00022  * non-commercial academic use see the license exception specified in *
00023  * the file "LICENSE-academic.txt". To get information about          *
00024  * commercial licensing please contact the authors.                   *
00025  *                                                                    *
00026  **********************************************************************/
00027 
00028 #ifndef VRN_ERRORLODSELECTOR_H
00029 #define VRN_ERRORLODSELECTOR_H
00030 
00031 #include "voreen/core/datastructures/volume/bricking/bricklodselector.h"
00032 
00033 namespace voreen {
00034 
00039     struct ErrorStruct {
00040 
00045         float improvementPerByte;
00046 
00050         int memRequiredForImprovement;
00051 
00055         int numVoxels;
00056 
00060         int nextLod;
00061 
00065         Brick* brick;
00066 
00071         bool operator < (ErrorStruct const & other) const {
00072             return improvementPerByte < other.improvementPerByte;
00073         }
00074 
00075         bool operator > (ErrorStruct const & other) const {
00076             return improvementPerByte > other.improvementPerByte;
00077         }
00078 
00082         bool operator = (ErrorStruct const & other) const {
00083             return brick > other.brick;
00084         }
00085     };
00086 
00092     class ErrorLodSelector : public BrickLodSelector {
00093 
00094     public:
00095 
00096         ErrorLodSelector(BrickingInformation& brickingInformation);
00097 
00102         virtual void selectLods();
00103 
00104     protected:
00105 
00109         void initializeErrorSet();
00110 
00116         void calculateNextImprovement(ErrorStruct errorStruct);
00117 
00123         std::set<ErrorStruct, std::greater<ErrorStruct> > errorSet_;
00124 
00128         int voxelSizeInByte_;
00129 
00133         int availableMemoryInByte_;
00134 
00138         int usedMemoryInByte_;
00139 
00140     private:
00141 
00142 
00143 
00144     }; //end of class
00145 
00146 
00147 
00148 } //namespace
00149 
00150 
00151 
00152 
00153 #endif