/*=========================================================================

  Program:   Visualization Toolkit

  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.

=========================================================================*/
// .NAME vtkOpenGLPointGaussianMapper - draw PointGaussians using imposters
// .SECTION Description
// An OpenGL mapper that uses imposters to draw PointGaussians. Supports
// transparency and picking as well.

#ifndef vtkOpenGLPointGaussianMapper_h
#define vtkOpenGLPointGaussianMapper_h

#include "vtkRenderingOpenGL2Module.h" // For export macro
#include "vtkPointGaussianMapper.h"

class vtkOpenGLPointGaussianMapperHelper;

class VTKRENDERINGOPENGL2_EXPORT vtkOpenGLPointGaussianMapper : public vtkPointGaussianMapper
{
public:
  static vtkOpenGLPointGaussianMapper* New();
  vtkTypeMacro(vtkOpenGLPointGaussianMapper, vtkPointGaussianMapper)
  void PrintSelf(ostream& os, vtkIndent indent);

  // Description:
  // Release any graphics resources that are being consumed by this mapper.
  // The parameter window could be used to determine which graphic
  // resources to release.
  void ReleaseGraphicsResources(vtkWindow *);

  // Description:
  // Is this mapper opqaue? currently always false.
  virtual bool GetIsOpaque();

protected:
  vtkOpenGLPointGaussianMapper();
  ~vtkOpenGLPointGaussianMapper();

  virtual void RenderPiece(vtkRenderer *ren, vtkActor *act);

  vtkOpenGLPointGaussianMapperHelper *Helper;
  vtkTimeStamp HelperUpdateTime;

private:
  vtkOpenGLPointGaussianMapper(const vtkOpenGLPointGaussianMapper&); // Not implemented.
  void operator=(const vtkOpenGLPointGaussianMapper&); // Not implemented.
};

#endif
