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 PICK_H 00028 #define PICK_H 00029 00030 00031 #ifdef __APPLE__ 00032 #include <OpenGL/gl.h> 00033 #else 00034 #include <GL/gl.h> 00035 #endif 00036 00037 00038 namespace Tools 00039 { 00079 class Pick 00080 { 00081 public: 00082 Pick(); 00083 ~Pick(); 00084 00087 void saveMatrices(); 00088 00093 bool get(int mouse_x, int mouse_y, float &x, float &y, float &z) const; 00094 00096 void enable() const; 00097 00099 void disable() const; 00100 00104 void setMaxAlpha(float max); 00105 00106 private: 00107 mutable GLdouble m_modelview[16]; 00108 mutable GLdouble m_projection[16]; 00109 float m_maxalpha; 00110 mutable GLuint m_displayId; 00111 mutable bool m_displayCreated; 00112 }; 00113 00114 00115 } // namespace 00116 00117 #endif