vtkOpenGLPointGaussianMapper.h

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/*=========================================================================
 
  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.
 
=========================================================================*/
#ifndef vtkOpenGLPointGaussianMapper_h
#define vtkOpenGLPointGaussianMapper_h
 
#include "vtkPointGaussianMapper.h"
#include "vtkRenderingOpenGL2Module.h" // For export macro
#include <vector>                      // for ivar
 
class vtkOpenGLPointGaussianMapperHelper;
 
class VTKRENDERINGOPENGL2_EXPORT vtkOpenGLPointGaussianMapper : public vtkPointGaussianMapper
{
public:
  static vtkOpenGLPointGaussianMapper* New();
  vtkTypeMacro(vtkOpenGLPointGaussianMapper, vtkPointGaussianMapper);
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
  void ReleaseGraphicsResources(vtkWindow*) override;
 
  bool HasTranslucentPolygonalGeometry() override;
 
  void Render(vtkRenderer* ren, vtkActor* act) override;
 
  void ProcessSelectorPixelBuffers(
    vtkHardwareSelector* sel, std::vector<unsigned int>& pixeloffsets, vtkProp* prop) override;
 
protected:
  vtkOpenGLPointGaussianMapper();
  ~vtkOpenGLPointGaussianMapper() override;
 
  void ReportReferences(vtkGarbageCollector* collector) override;
 
  std::vector<vtkOpenGLPointGaussianMapperHelper*> Helpers;
  vtkOpenGLPointGaussianMapperHelper* CreateHelper();
  void CopyMapperValuesToHelper(vtkOpenGLPointGaussianMapperHelper* helper);
 
  vtkTimeStamp HelperUpdateTime;
  vtkTimeStamp ScaleTableUpdateTime;
  vtkTimeStamp OpacityTableUpdateTime;
 
  // unused
  void RenderPiece(vtkRenderer*, vtkActor*) override {}
 
  void RenderInternal(vtkRenderer*, vtkActor*);
 
  // create the table for opacity values
  void BuildOpacityTable();
 
  // create the table for scale values
  void BuildScaleTable();
 
  float* OpacityTable;  // the table
  double OpacityScale;  // used for quick lookups
  double OpacityOffset; // used for quick lookups
  float* ScaleTable;    // the table
  double ScaleScale;    // used for quick lookups
  double ScaleOffset;   // used for quick lookups
 
  vtkExecutive* CreateDefaultExecutive() override;
 
  int FillInputPortInformation(int port, vtkInformation* info) override;
 
  void ComputeBounds() override;
 
  // used by the hardware selector
  std::vector<std::vector<unsigned int> > PickPixels;
 
private:
  vtkOpenGLPointGaussianMapper(const vtkOpenGLPointGaussianMapper&) = delete;
  void operator=(const vtkOpenGLPointGaussianMapper&) = delete;
};
 
#endif