dox/VolumeRendering/vtkVolumeMapper.h

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

  Program:   Visualization Toolkit
  Module:    vtkVolumeMapper.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 __vtkVolumeMapper_h
#define __vtkVolumeMapper_h

#include "vtkAbstractVolumeMapper.h"

class vtkRenderer;
class vtkVolume;
class vtkImageData;

#define VTK_CROP_SUBVOLUME              0x0002000
#define VTK_CROP_FENCE                  0x2ebfeba
#define VTK_CROP_INVERTED_FENCE         0x5140145
#define VTK_CROP_CROSS                  0x0417410
#define VTK_CROP_INVERTED_CROSS         0x7be8bef

class vtkWindow;

class VTK_VOLUMERENDERING_EXPORT vtkVolumeMapper : public vtkAbstractVolumeMapper
{
public:
  vtkTypeMacro(vtkVolumeMapper,vtkAbstractVolumeMapper);
  void PrintSelf( ostream& os, vtkIndent indent );


  virtual void SetInput( vtkImageData * );
  virtual void SetInput( vtkDataSet * );
  vtkImageData *GetInput();


  vtkSetMacro( BlendMode, int );
  void SetBlendModeToComposite()
    { this->SetBlendMode( vtkVolumeMapper::COMPOSITE_BLEND ); }
  void SetBlendModeToMaximumIntensity()
    { this->SetBlendMode( vtkVolumeMapper::MAXIMUM_INTENSITY_BLEND ); }
  void SetBlendModeToMinimumIntensity()
    { this->SetBlendMode( vtkVolumeMapper::MINIMUM_INTENSITY_BLEND ); }
  void SetBlendModeToAdditive()
    { this->SetBlendMode( vtkVolumeMapper::ADDITIVE_BLEND ); }
  vtkGetMacro( BlendMode, int );
  

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


  vtkSetVector6Macro( CroppingRegionPlanes, double );
  vtkGetVectorMacro(  CroppingRegionPlanes, double, 6 );


  vtkGetVectorMacro( VoxelCroppingRegionPlanes, double, 6 );
  

  vtkSetClampMacro( CroppingRegionFlags, int, 0x0, 0x7ffffff );
  vtkGetMacro( CroppingRegionFlags, int );
  void SetCroppingRegionFlagsToSubVolume() 
    {this->SetCroppingRegionFlags( VTK_CROP_SUBVOLUME );};
  void SetCroppingRegionFlagsToFence() 
    {this->SetCroppingRegionFlags( VTK_CROP_FENCE );};
  void SetCroppingRegionFlagsToInvertedFence() 
    {this->SetCroppingRegionFlags( VTK_CROP_INVERTED_FENCE );};
  void SetCroppingRegionFlagsToCross() 
    {this->SetCroppingRegionFlags( VTK_CROP_CROSS );};
  void SetCroppingRegionFlagsToInvertedCross() 
    {this->SetCroppingRegionFlags( VTK_CROP_INVERTED_CROSS );};

//BTX  

  virtual void Render(vtkRenderer *ren, vtkVolume *vol)=0;

  virtual void ReleaseGraphicsResources(vtkWindow *) {};
  
  enum 
  {
    COMPOSITE_BLEND,
    MAXIMUM_INTENSITY_BLEND,
    MINIMUM_INTENSITY_BLEND,
    ADDITIVE_BLEND
  };
//ETX

protected:
  vtkVolumeMapper();
  ~vtkVolumeMapper();

  int   BlendMode;

  // Cropping variables, and a method for converting the world
  // coordinate cropping region planes to voxel coordinates
  int                  Cropping;
  double               CroppingRegionPlanes[6];
  double               VoxelCroppingRegionPlanes[6];
  int                  CroppingRegionFlags;
  void ConvertCroppingRegionPlanesToVoxels();
  
  virtual int FillInputPortInformation(int, vtkInformation*);
  
private:
  vtkVolumeMapper(const vtkVolumeMapper&);  // Not implemented.
  void operator=(const vtkVolumeMapper&);  // Not implemented.
};


#endif

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