//  Copyright (C) 2007-2010  CEA/DEN, EDF R&D, OPEN CASCADE
//
//  Copyright (C) 2003-2007  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
//  CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
//
//  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.
//
//  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
//
//  See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
//

#ifndef VTKVIEWER_UTILITIES_H
#define VTKVIEWER_UTILITIES_H

#include "VTKViewer.h"

class vtkRenderer;

VTKVIEWER_EXPORT 
extern
void
ResetCamera(vtkRenderer* theRenderer, 
            int theUsingZeroFocalPoint = false);

VTKVIEWER_EXPORT
extern
int
ComputeVisiblePropBounds(vtkRenderer* theRenderer, 
                         vtkFloatingPointType theBounds[6]);

VTKVIEWER_EXPORT
extern
void
ResetCameraClippingRange(vtkRenderer* theRenderer);
VTKVIEWER_EXPORT
extern
bool
ComputeTrihedronSize(vtkRenderer* theRenderer, 
                     vtkFloatingPointType& theNewSize, 
                     const vtkFloatingPointType theSize, 
                     const vtkFloatingPointType theSizeInPercents);

VTKVIEWER_EXPORT
extern
bool IsBBEmpty(vtkRenderer* theRenderer);
VTKVIEWER_EXPORT
extern
bool ComputeBBCenter(vtkRenderer* theRenderer, 
                     vtkFloatingPointType theCenter[3]);
#endif
