/****************************************************************************

 Copyright (C) 2002-2006 Gilles Debunne (Gilles.Debunne@imag.fr)

This file is part of the QGLViewer library.
 Version 2.2.4-1, released on December 12, 2006.

 http://artis.imag.fr/Members/Gilles.Debunne/QGLViewer

 libQGLViewer is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation; either version 2 of the License, or
 (at your option) any later version.

 libQGLViewer 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 General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with libQGLViewer; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

*****************************************************************************/

#include <QGLViewer/camera.h>

class CullingCamera : public qglviewer::Camera
{
public:

  void computeFrustumPlanesEquations() const { getFrustumPlanesCoefficients(planeCoefficients); }

  float distanceToFrustumPlane(int index, const qglviewer::Vec& pos) const;
  bool sphereIsVisible(const qglviewer::Vec& center, float radius) const;
  bool aaBoxIsVisible(const qglviewer::Vec& p1, const qglviewer::Vec& p2, bool* entirely=NULL) const;
  
private:
  // F r u s t u m   p l a n e s
  mutable GLdouble planeCoefficients[6][4];
};