vtkMultiBlockVolumeMapper.h

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

  Program:   Visualization Toolkit
  Module:    vtkMultiBlockVolumeMapper.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 vtkMultiBlockVolumeMapper_h
#define vtkMultiBlockVolumeMapper_h

#include <vector>                            // For DataBlocks

#include "vtkTimeStamp.h"                    // For BlockLoadingTime
#include "vtkRenderingVolumeOpenGL2Module.h" // For export macro
#include "vtkVolumeMapper.h"


class vtkDataObjectTree;
class vtkDataSet;
class vtkImageData;
class vtkMultiBlockDataSet;
class vtkSmartVolumeMapper;

class VTKRENDERINGVOLUMEOPENGL2_EXPORT vtkMultiBlockVolumeMapper :
  public vtkVolumeMapper
{
public:
  static vtkMultiBlockVolumeMapper *New();
  vtkTypeMacro(vtkMultiBlockVolumeMapper,vtkVolumeMapper);
  void PrintSelf(ostream& os, vtkIndent indent) override;


  double* GetBounds() override;
  using vtkAbstractVolumeMapper::GetBounds;

  void SelectScalarArray(int arrayNum) override;
  void SelectScalarArray(char const* arrayName) override;
  void SetScalarMode(int ScalarMode) override;
  void SetArrayAccessMode(int accessMode) override;

  void Render(vtkRenderer* ren, vtkVolume* vol) override;

  void ReleaseGraphicsResources(vtkWindow* window) override;


  void SetVectorMode(int mode);
  vtkGetMacro(VectorMode, int);
  void SetVectorComponent(int component);
  vtkGetMacro(VectorComponent, int);


  void SetBlendMode(int mode) override;


  void SetCropping(vtkTypeBool mode) override;

  void SetCroppingRegionPlanes(double arg1, double arg2, double arg3,
    double arg4, double arg5, double arg6) override;
  void SetCroppingRegionPlanes(double *planes) override;

  void SetCroppingRegionFlags(int mode) override;

protected:
  vtkMultiBlockVolumeMapper();
  ~vtkMultiBlockVolumeMapper() override;

  int FillInputPortInformation(int port, vtkInformation* info) override;

private:
  void LoadDataSet(vtkRenderer* ren, vtkVolume* vol);

  void CreateMappers(vtkDataObjectTree* input, vtkRenderer* ren, vtkVolume* vol);

  vtkDataObjectTree* GetDataObjectTreeInput();

  void ComputeBounds();

  void SortMappers(vtkRenderer* ren, vtkMatrix4x4* volumeMat);

  void ClearMappers();

  vtkSmartVolumeMapper* CreateMapper();

  vtkMultiBlockVolumeMapper(const vtkMultiBlockVolumeMapper&) = delete;
  void operator=(const vtkMultiBlockVolumeMapper&) = delete;


  typedef std::vector<vtkSmartVolumeMapper*> MapperVec;
  MapperVec Mappers;
  vtkSmartVolumeMapper* FallBackMapper;

  vtkTimeStamp BlockLoadingTime;
  vtkTimeStamp BoundsComputeTime;

  int VectorMode;
  int VectorComponent;
};
#endif