sglOrthographicCamera.hpp Source File

00001 /*****************************************************************************
00002  * SGL: A Scene Graph Library
00003  *
00004  * Copyright (C) 1997-2001  Scott McMillan   All Rights Reserved.
00005  *
00006  * This library is free software; you can redistribute it and/or
00007  * modify it under the terms of the GNU Library General Public
00008  * License as published by the Free Software Foundation; either
00009  * version 2 of the License, or (at your option) any later version.
00010  *
00011  * This library 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 GNU
00014  * Library General Public License for more details.
00015  *
00016  * You should have received a copy of the GNU Library General Public
00017  * License along with this library; if not, write to the Free
00018  * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
00019  *****************************************************************************
00020  *     File: sglOrthographicCamera.hpp
00021  *   Author: Scott McMillan
00022  *  Created: 19 December 2000
00023  *  Summary: Orthographic camera class
00024  *****************************************************************************/
00025 
00026 #ifndef __SGL_ORTHOGRAPHIC_CAMERA_HPP
00027 #define __SGL_ORTHOGRAPHIC_CAMERA_HPP
00028 
00029 #include <sglCamera.hpp>
00030 
00050 class SGL_DLL_API sglOrthographicCamera : public sglCamera
00051 {
00052 public:
00054    sglOrthographicCamera();
00055 
00057    virtual ~sglOrthographicCamera();
00058 
00073    void setOrtho(double  left, double  right, double  bottom, double  top,
00074                  double near_clip = -1.0, double far_clip = 1.0);
00075 
00079    void getOrtho(double &left, double &right, double &bottom, double &top,
00080                  double &near_clip, double &far_clip) const;
00081 
00082    // See sglCamera::applyProjection() for details.
00083    virtual void applyProjection() const;
00084 
00085    // See sglObject::printInfo() for details.
00086    virtual void printInfo(ostream &ostrm, const char *indent_string) const;
00087 
00088 protected:
00089    sglOrthographicCamera(const sglOrthographicCamera &);
00090    sglOrthographicCamera &operator=(const sglOrthographicCamera &);
00091 
00092    void buildFrustum();
00093 
00094 protected:
00095    double m_left;
00096    double m_right;
00097    double m_bottom;
00098    double m_top;
00099 };
00100 
00101 #endif