vtkUnstructuredGridVolumeRayCastIterator.h

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// -*- c++ -*-
 
/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkUnstructuredGridVolumeRayCastIterator.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 vtkUnstructuredGridVolumeRayCastIterator_h
#define vtkUnstructuredGridVolumeRayCastIterator_h
 
#include "vtkObject.h"
#include "vtkRenderingVolumeModule.h" // For export macro
 
class vtkIdList;
class vtkDoubleArray;
class vtkDataArray;
 
class VTKRENDERINGVOLUME_EXPORT vtkUnstructuredGridVolumeRayCastIterator : public vtkObject
{
public:
  vtkTypeMacro(vtkUnstructuredGridVolumeRayCastIterator, vtkObject);
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
  virtual void Initialize(int x, int y) = 0;
 
  virtual vtkIdType GetNextIntersections(vtkIdList* intersectedCells,
    vtkDoubleArray* intersectionLengths, vtkDataArray* scalars, vtkDataArray* nearIntersections,
    vtkDataArray* farIntersections) = 0;
 
 
  vtkSetVector2Macro(Bounds, double);
  vtkGetVector2Macro(Bounds, double);
 
  // Descrption:
  // Set/get the maximum number of intersections returned with a call to
  // GetNextIntersections.  Set to 32 by default.
  vtkSetMacro(MaxNumberOfIntersections, vtkIdType);
  vtkGetMacro(MaxNumberOfIntersections, vtkIdType);
 
protected:
  vtkUnstructuredGridVolumeRayCastIterator();
  ~vtkUnstructuredGridVolumeRayCastIterator() override;
 
  double Bounds[2];
 
  vtkIdType MaxNumberOfIntersections;
 
private:
  vtkUnstructuredGridVolumeRayCastIterator(
    const vtkUnstructuredGridVolumeRayCastIterator&) = delete;
  void operator=(const vtkUnstructuredGridVolumeRayCastIterator&) = delete;
};
 
#endif // vtkUnstructuredGridRayCastIterator_h