00001 /***************************************************************************** 00002 * Copyright (C) 2007 Herve Lombaert <herve.lombaert@polymtl.ca> 00003 * 00004 * This program is free software; you can redistribute it and/or 00005 * modify it under the terms of the GNU General Public License 00006 * as published by the Free Software Foundation; either version 2 00007 * of the License, or (at your option) any later version. 00008 * 00009 * This program is distributed in the hope that it will be useful, 00010 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00012 * GNU General Public License for more details. 00013 * 00014 * You should have received a copy of the GNU General Public License 00015 * along with this program; if not, write to the 00016 * Free Software Foundation, Inc., 00017 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 00018 ****************************************************************************/ 00019 00020 00027 #ifndef DISPLAYCOLOR_H 00028 #define DISPLAYCOLOR_H 00029 00030 00031 #ifdef __APPLE__ 00032 #include <OpenGL/gl.h> 00033 #else 00034 #include <GL/gl.h> 00035 #endif 00036 #include <error.h> 00037 00038 00039 namespace Tools { namespace TransferFunction 00040 { 00074 class DisplayColor 00075 { 00076 public: 00077 DisplayColor(); 00078 ~DisplayColor(); 00079 00081 void display() const; 00082 00086 void getRGB(float x, float y, float &r, float &g, float &b) const; 00087 00089 void mark(float r, float g, float b); 00090 00091 private: 00092 void initTexture() const; 00093 00094 private: 00095 mutable GLuint m_textureName; 00096 float m_mark_r; 00097 float m_mark_g; 00098 float m_mark_b; 00099 float m_mark_u; 00100 float m_mark_v; 00101 }; 00102 00103 00104 }} // namespaces 00105 00106 #endif