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sglCamera.hpp

/*****************************************************************************
 * SGL: A Scene Graph Library
 *
 * Copyright (C) 1997-2001  Scott McMillan   All Rights Reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the Free
 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *****************************************************************************
 *     File: sglCamera.hpp
 *   Author: Scott McMillan
 *  Created: 19 December 2000
 *  Summary: abstract base class for cameras (subclassed to perspective and
 *           orthographic cameras.
 *****************************************************************************/

#ifndef __SGL_CAMERA_HPP
#define __SGL_CAMERA_HPP

#include <sgl.h>
#include <sglObject.hpp>
#include <sglFrustum.hpp>

//----------------------------------------------------------------------------

class SGL_DLL_API sglCamera : public sglObject
{
public:
   sglCamera();

   virtual ~sglCamera();

   const sglFrustumd &getFrustum() const { return m_frustum; }

   virtual void applyProjection() const = 0;

   // See sglObject::printInfo() for details.
   virtual void printInfo(ostream &ostrm, const char *indent_string) const;

protected:
   sglCamera(const sglCamera &);            // not implemented
   sglCamera &operator=(const sglCamera &); // not implemented

protected:
   double m_near;
   double m_far;

   sglFrustumd m_frustum;
};

#endif

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