/usr/include/paraview/vtkUnstructuredGridVolumeRayCastIterator.h is in paraview-dev 5.0.1+dfsg1-4.
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/*=========================================================================
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.
=========================================================================*/
// .NAME vtkUnstructuredGridVolumeRayCastIterator
//
// .SECTION Description
//
// vtkUnstructuredGridVolumeRayCastIterator is a superclass for iterating
// over the intersections of a viewing ray with a group of unstructured
// cells. These iterators are created with a
// vtkUnstructuredGridVolumeRayCastFunction.
//
// .SECTION See Also
// vtkUnstructuredGridVolumeRayCastFunction
//
#ifndef vtkUnstructuredGridVolumeRayCastIterator_h
#define vtkUnstructuredGridVolumeRayCastIterator_h
#include "vtkRenderingVolumeModule.h" // For export macro
#include "vtkObject.h"
class vtkIdList;
class vtkDoubleArray;
class vtkDataArray;
class VTKRENDERINGVOLUME_EXPORT vtkUnstructuredGridVolumeRayCastIterator : public vtkObject
{
public:
vtkTypeMacro(vtkUnstructuredGridVolumeRayCastIterator, vtkObject);
virtual void PrintSelf(ostream &os, vtkIndent indent);
// Description:
// Initializes the iteration to the start of the ray at the given screen
// coordinates.
virtual void Initialize(int x, int y) = 0;
// Description:
// Get the intersections of the next several cells. The cell ids are
// stored in \c intersectedCells and the length of each ray segment
// within the cell is stored in \c intersectionLengths. The point
// scalars \c scalars are interpolated and stored in \c nearIntersections
// and \c farIntersections. \c intersectedCells, \c intersectionLengths,
// or \c scalars may be \c NULL to suppress passing the associated
// information. The number of intersections actually encountered is
// returned. 0 is returned if and only if no more intersections are to
// be found.
virtual vtkIdType GetNextIntersections(vtkIdList *intersectedCells,
vtkDoubleArray *intersectionLengths,
vtkDataArray *scalars,
vtkDataArray *nearIntersections,
vtkDataArray *farIntersections) = 0;
// Description:
// Set/get the bounds of the cast ray (in viewing coordinates). By
// default the range is [0,1].
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();
double Bounds[2];
vtkIdType MaxNumberOfIntersections;
private:
vtkUnstructuredGridVolumeRayCastIterator(const vtkUnstructuredGridVolumeRayCastIterator&); // Not implemented.
void operator=(const vtkUnstructuredGridVolumeRayCastIterator&); // Not implemented.
};
#endif //vtkUnstructuredGridRayCastIterator_h
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