camera.hpp
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00001 /*
00002 **    TP 4ETI CPE Lyon
00003 **    Copyright (C) 2012 Damien Rohmer
00004 **
00005 **    This program is free software: you can redistribute it and/or modify
00006 **    it under the terms of the GNU General Public License as published by
00007 **    the Free Software Foundation, either version 3 of the License, or
00008 **    (at your option) any later version.
00009 **
00010 **   This program is distributed in the hope that it will be useful,
00011 **    but WITHOUT ANY WARRANTY; without even the implied warranty of
00012 **    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00013 **    GNU General Public License for more details.
00014 **
00015 **    You should have received a copy of the GNU General Public License
00016 **    along with this program.  If not, see <http://www.gnu.org/licenses/>.
00017 */
00018 
00019 #ifndef CAMERA_HPP
00020 #define CAMERA_HPP
00021 
00022 #include <v3.hpp>
00023 
00024 namespace cpe
00025 {
00026 class p2d;
00027 
00029 class camera
00030 {
00031     public:
00032 
00033         // ********************************************* //
00034         // ********************************************* //
00035         //  Constructor
00036         // ********************************************* //
00037         // ********************************************* //
00038 
00040         camera(const v3& center=v3(0,0,-2),const v3& direction=v3(0,0,1),const v3& up=v3(0,1,0),const double& dist_screen=2.0,const double& length_screen=4.0);
00041 
00042         // ********************************************* //
00043         // ********************************************* //
00044         //  Access parameters
00045         // ********************************************* //
00046         // ********************************************* //
00047 
00049         const v3& get_center() const;
00051         const v3& get_direction() const;
00053         const v3& get_up() const;
00055         const double& get_dist_screen() const;
00057         const double& get_length_screen() const;
00058 
00059         // ********************************************* //
00060         // ********************************************* //
00061         //  Compute position on the screen
00062         // ********************************************* //
00063         // ********************************************* //
00064 
00066         v3 get_screen_coordinate(const double& u,const double& v) const;
00067 
00068     private:
00069 
00071         v3 p;
00073         v3 dir;
00075         v3 up;
00077         double dist_screen;
00079         double length_screen;
00080 };
00081 }
00082 
00083 #endif