dox/VolumeRendering/vtkGPUVolumeRayCastMapper.h

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

  Program:   Visualization Toolkit
  Module:    vtkGPUVolumeRayCastMapper.h

  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 __vtkGPUVolumeRayCastMapper_h
#define __vtkGPUVolumeRayCastMapper_h

#include "vtkVolumeMapper.h"

class vtkVolumeProperty;
class vtkRenderWindow;

//class vtkKWAMRVolumeMapper; // friend class.

class VTK_VOLUMERENDERING_EXPORT vtkGPUVolumeRayCastMapper : public vtkVolumeMapper
{
public:
  static vtkGPUVolumeRayCastMapper *New();
  vtkTypeMacro(vtkGPUVolumeRayCastMapper,vtkVolumeMapper);
  void PrintSelf( ostream& os, vtkIndent indent );


  vtkSetClampMacro( AutoAdjustSampleDistances, int, 0, 1 );
  vtkGetMacro( AutoAdjustSampleDistances, int );
  vtkBooleanMacro( AutoAdjustSampleDistances, int );


  vtkSetMacro( SampleDistance, float );
  vtkGetMacro( SampleDistance, float );


  vtkSetClampMacro( ImageSampleDistance, float, 0.1f, 100.0f );
  vtkGetMacro( ImageSampleDistance, float );


  vtkSetClampMacro( MinimumImageSampleDistance, float, 0.1f, 100.0f );
  vtkGetMacro( MinimumImageSampleDistance, float );


  vtkSetClampMacro( MaximumImageSampleDistance, float, 0.1f, 100.0f );
  vtkGetMacro( MaximumImageSampleDistance, float );



  vtkSetMacro( FinalColorWindow, float );
  vtkGetMacro( FinalColorWindow, float );
  vtkSetMacro( FinalColorLevel,  float );
  vtkGetMacro( FinalColorLevel,  float );


  vtkSetMacro( MaxMemoryInBytes, vtkIdType );
  vtkGetMacro( MaxMemoryInBytes, vtkIdType );


  vtkSetClampMacro( MaxMemoryFraction, float, 0.1f, 1.0f );
  vtkGetMacro( MaxMemoryFraction, float );


  vtkSetMacro(ReportProgress,bool);
  vtkGetMacro(ReportProgress,bool);


  virtual int IsRenderSupported(vtkRenderWindow *vtkNotUsed(window),
                                vtkVolumeProperty *vtkNotUsed(property))
    {
      return 0;
    }

  void CreateCanonicalView( vtkRenderer *ren,
                            vtkVolume *volume,
                            vtkImageData *image,
                            int blend_mode,
                            double viewDirection[3],
                            double viewUp[3] );

  void SetMaskInput(vtkImageData *mask);
  vtkGetObjectMacro(MaskInput, vtkImageData);


  vtkSetClampMacro(MaskBlendFactor,float,0.0f,1.0f);
  vtkGetMacro(MaskBlendFactor,float);

//BTX
  void Render( vtkRenderer *, vtkVolume * );

  virtual void GPURender( vtkRenderer *, vtkVolume *) {}

  void ReleaseGraphicsResources(vtkWindow *) {};

  virtual void GetReductionRatio(double ratio[3])=0;

//ETX

protected:
  vtkGPUVolumeRayCastMapper();
  ~vtkGPUVolumeRayCastMapper();

  // Check to see that the render will be OK
  int ValidateRender( vtkRenderer *, vtkVolume * );


  // Special version of render called during the creation
  // of a canonical view.
  void CanonicalViewRender( vtkRenderer *, vtkVolume * );

  // Methods called by the AMR Volume Mapper.
  virtual void PreRender(vtkRenderer *ren,
                         vtkVolume *vol,
                         double datasetBounds[6],
                         double scalarRange[2],
                         int numberOfScalarComponents,
                         unsigned int numberOfLevels)=0;

  // \pre input is up-to-date
  virtual void RenderBlock(vtkRenderer *ren,
                           vtkVolume *vol,
                           unsigned int level)=0;

  virtual void PostRender(vtkRenderer *ren,
                          int numberOfScalarComponents)=0;

  void SetCellFlag(int cellFlag);

  // The distance between sample points along the ray
  float  SampleDistance;


  float  ImageSampleDistance;
  float  MinimumImageSampleDistance;
  float  MaximumImageSampleDistance;
  int    AutoAdjustSampleDistances;

  int    SmallVolumeRender;
  double BigTimeToDraw;
  double SmallTimeToDraw;

  float FinalColorWindow;
  float FinalColorLevel;

  vtkIdType MaxMemoryInBytes;
  float MaxMemoryFraction;


  // 1 if we are generating the canonical image, 0 otherwise
  int   GeneratingCanonicalView;
  vtkImageData *CanonicalViewImageData;


  vtkSetClampMacro(AMRMode,int,0,1);
  vtkGetMacro(AMRMode,int);
  vtkBooleanMacro(AMRMode,int);

  int AMRMode;
  int CellFlag; // point data or cell data (or field data, not handled) ?

  virtual void ClipCroppingRegionPlanes();

  double ClippedCroppingRegionPlanes[6];

  bool ReportProgress;

  vtkImageData *MaskInput;

  float MaskBlendFactor;

  vtkGetObjectMacro(TransformedInput, vtkImageData);
  void SetTransformedInput(vtkImageData*);

  vtkImageData* TransformedInput;

  vtkImageData* LastInput;

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

#endif

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