vtkMultiBlockUnstructuredGridVolumeMapper.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#ifndef vtkMultiBlockUnstructuredGridVolumeMapper_h
#define vtkMultiBlockUnstructuredGridVolumeMapper_h

#include <vector> // For DataBlocks

#include "vtkNew.h"                          // for ivars
#include "vtkRenderingVolumeOpenGL2Module.h" // For export macro
#include "vtkUnstructuredGridVolumeMapper.h"
#include "vtkWrappingHints.h" // For VTK_MARSHALAUTO

VTK_ABI_NAMESPACE_BEGIN
class vtkDataObjectTree;
class vtkDataSet;
class vtkMatrix4x4;
class vtkMultiBlockDataSet;
class vtkUnstructuredGrid;
class vtkRenderWindow;
class vtkProjectedTetrahedraMapper;

class VTKRENDERINGVOLUMEOPENGL2_EXPORT VTK_MARSHALAUTO vtkMultiBlockUnstructuredGridVolumeMapper
  : public vtkUnstructuredGridVolumeMapper
{
public:
  static vtkMultiBlockUnstructuredGridVolumeMapper* New();
  vtkTypeMacro(vtkMultiBlockUnstructuredGridVolumeMapper, vtkUnstructuredGridVolumeMapper);
  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 SetUseFloatingPointFrameBuffer(bool use);
  vtkGetMacro(UseFloatingPointFrameBuffer, bool);


  void SetBlendMode(int mode) override;

protected:
  vtkMultiBlockUnstructuredGridVolumeMapper();
  ~vtkMultiBlockUnstructuredGridVolumeMapper() override;

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

  bool UseFloatingPointFrameBuffer;

  vtkRenderWindow* DebugWin;
  vtkRenderer* DebugRen;
  vtkNew<vtkMatrix4x4> TempMatrix4x4;

private:
  void LoadDataSet();

  void CreateMappers(vtkDataObjectTree* input);

  vtkDataObjectTree* GetDataObjectTreeInput();

  void ComputeBounds();

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

  void ClearMappers();

  vtkProjectedTetrahedraMapper* CreateMapper();

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


  typedef std::vector<vtkProjectedTetrahedraMapper*> MapperVec;
  MapperVec Mappers;

  vtkMTimeType BlockLoadingTime;
  vtkMTimeType BoundsComputeTime;
};
VTK_ABI_NAMESPACE_END
#endif