vtkAbstractVolumeMapper.h

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

  Program:   Visualization Toolkit
  Module:    vtkAbstractVolumeMapper.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 vtkAbstractVolumeMapper_h
#define vtkAbstractVolumeMapper_h

#include "vtkRenderingCoreModule.h" // For export macro
#include "vtkAbstractMapper3D.h"

class vtkRenderer;
class vtkVolume;
class vtkWindow;
class vtkDataSet;

class VTKRENDERINGCORE_EXPORT vtkAbstractVolumeMapper : public vtkAbstractMapper3D
{
public:
  vtkTypeMacro(vtkAbstractVolumeMapper,vtkAbstractMapper3D);
  void PrintSelf( ostream& os, vtkIndent indent ) override;


  virtual vtkDataSet *GetDataSetInput();
  virtual vtkDataObject *GetDataObjectInput();


  double *GetBounds() VTK_SIZEHINT(6) override;
  void GetBounds(double bounds[6]) override
    { this->vtkAbstractMapper3D::GetBounds(bounds); };


  vtkSetMacro(ScalarMode, int);
  vtkGetMacro(ScalarMode, int);
  vtkSetMacro(ArrayAccessMode, int);
  void SetScalarModeToDefault() {
    this->SetScalarMode(VTK_SCALAR_MODE_DEFAULT);};
  void SetScalarModeToUsePointData() {
    this->SetScalarMode(VTK_SCALAR_MODE_USE_POINT_DATA);};
  void SetScalarModeToUseCellData() {
    this->SetScalarMode(VTK_SCALAR_MODE_USE_CELL_DATA);};
  void SetScalarModeToUsePointFieldData() {
    this->SetScalarMode(VTK_SCALAR_MODE_USE_POINT_FIELD_DATA);};
  void SetScalarModeToUseCellFieldData() {
    this->SetScalarMode(VTK_SCALAR_MODE_USE_CELL_FIELD_DATA);};


  virtual void SelectScalarArray(int arrayNum);
  virtual void SelectScalarArray(const char* arrayName);

  virtual char* GetArrayName() { return this->ArrayName; }
  virtual int GetArrayId() { return this->ArrayId; }
  virtual int GetArrayAccessMode() { return this->ArrayAccessMode; }

  const char *GetScalarModeAsString();


  virtual float GetGradientMagnitudeScale() {return 1.0f;};
  virtual float GetGradientMagnitudeBias()  {return 0.0f;};
  virtual float GetGradientMagnitudeScale(int) {return 1.0f;};
  virtual float GetGradientMagnitudeBias(int)  {return 0.0f;};


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

  void ReleaseGraphicsResources(vtkWindow *) override {}

protected:
  vtkAbstractVolumeMapper();
  ~vtkAbstractVolumeMapper() override;

  // see algorithm for more info
  int FillInputPortInformation(int port, vtkInformation* info) override;

  int         ScalarMode;
  char       *ArrayName;
  int         ArrayId;
  int         ArrayAccessMode;

private:
  vtkAbstractVolumeMapper(const vtkAbstractVolumeMapper&) = delete;
  void operator=(const vtkAbstractVolumeMapper&) = delete;
};


#endif