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#ifndef GLT_PROJECT_H
#define GLT_PROJECT_H
/*
GLT OpenGL C++ Toolkit
Copyright (C) 2000-2002 Nigel Stewart
Email: nigels@nigels.com WWW: http://www.nigels.com/glt/
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*! \file
\brief OpenGL Projection Classes
\ingroup GLT
$Id: project.h,v 1.11 2002/10/07 16:33:35 nigels Exp $
$Log: project.h,v $
Revision 1.11 2002/10/07 16:33:35 nigels
Added CVS info
*/
#include "glt_config.h"
#include "glt_gl.h"
/*! \class GltOrtho
\brief OpenGL Orthographic Camera Class
\ingroup GLT
*/
class GltOrtho
{
public:
/// Constructor
GltOrtho();
/// Destructor
~GltOrtho();
/// Set OpenGL viewing matrix
void set();
/// Set OpenGL viewing matrix
void set(int width,int height);
/// Left position
GLdouble &left();
/// Right position
GLdouble &right();
/// Bottom position
GLdouble &bottom();
/// Top position
GLdouble &top();
/// zNear position
GLdouble &zNear();
/// zFar position
GLdouble &zFar();
/// Left position
const GLdouble &left() const;
/// Right position
const GLdouble &right() const;
/// Bottom position
const GLdouble &bottom() const;
/// Top position
const GLdouble &top() const;
/// zNear position
const GLdouble &zNear() const;
/// zFar position
const GLdouble &zFar() const;
/// Calculate the n'th tile of a grid: dx*dy
bool tile(GltOrtho &frust,const int dx,const int dy,const int n) const;
private:
GLdouble _left;
GLdouble _right;
GLdouble _bottom;
GLdouble _top;
GLdouble _zNear;
GLdouble _zFar;
};
/*! \class GltFrustum
\brief OpenGL Perspective Camera Class
\ingroup GLT
*/
class GltFrustum
{
public:
/// Constructor
GltFrustum();
/// Destructor
~GltFrustum();
/// Set OpenGL viewing matrix
void set();
/// Set OpenGL viewing matrix
void set(int width,int height);
/// Left position
GLdouble &left();
/// Right position
GLdouble &right();
/// Bottom position
GLdouble &bottom();
/// Top position
GLdouble &top();
/// zNear position
GLdouble &zNear();
/// zFar position
GLdouble &zFar();
/// Left position
const GLdouble &left() const;
/// Right position
const GLdouble &right() const;
/// Bottom position
const GLdouble &bottom() const;
/// Top position
const GLdouble &top() const;
/// zNear position
const GLdouble &zNear() const;
/// zFar position
const GLdouble &zFar() const;
/// Calculate the n'th tile of a grid: dx*dy
bool tile(GltFrustum &frust,const int dx,const int dy,const int n) const;
private:
GLdouble _left;
GLdouble _right;
GLdouble _bottom;
GLdouble _top;
GLdouble _zNear;
GLdouble _zFar;
};
#endif
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