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

 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 "standardCamera.h"
using namespace qglviewer;

StandardCamera::StandardCamera()
{
  standard = true;
  orthoSize = 1.0;
}

float StandardCamera::zNear() const
{ 
  if (standard) 
    return 0.001; 
  else 
    return Camera::zNear(); 
}

float StandardCamera::zFar() const
{  
  if (standard) 
    return 1000.0; 
  else 
    return Camera::zFar();
}

void StandardCamera::changeOrthoFrustumSize(int delta)
{
  if (delta > 0)
    orthoSize *= 1.1;
  else
    orthoSize /= 1.1;
}

void StandardCamera::getOrthoWidthHeight(GLdouble &halfWidth, GLdouble &halfHeight) const
{
  if (standard)
  {
    halfHeight = orthoSize;
    halfWidth = aspectRatio() * orthoSize;
  }
  else
    Camera::getOrthoWidthHeight(halfWidth, halfHeight);
}