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/*=========================================================================
Program: Visualization Toolkit
Module: $RCSfile$
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 vtkVolumeContourSpectrumFilter - compute an approximation of the
// volume contour signature (evolution of the volume of the input tet-mesh
// along an arc of the Reeb graph).
// .SECTION Description
// The filter takes a vtkUnstructuredGrid as an input (port 0), along with a
// vtkReebGraph (port 1).
// The Reeb graph arc to consider can be specified with SetArcId() (default: 0).
// The number of (evenly distributed) samples of the signature can be defined
// with SetNumberOfSamples() (default value: 100).
// The filter will first try to pull as a scalar field the vtkDataArray with Id
// 'FieldId' of the vtkUnstructuredGrid, see SetFieldId (default: 0). The
// filter will abort if this field does not exist.
//
// The filter outputs a vtkTable with the volume contour signature
// approximation, each sample being evenly distributed in the function span of
// the arc.
//
// This filter is a typical example for designing your own contour signature
// filter (with customized metrics). It also shows typical vtkReebGraph
// traversals.
//
// Reference:
// C. Bajaj, V. Pascucci, D. Schikore,
// "The contour spectrum",
// IEEE Visualization, 167-174, 1997.
#ifndef __vtkVolumeContourSpectrumFilter_h
#define __vtkVolumeContourSpectrumFilter_h
#include "vtkDataObjectAlgorithm.h"
class vtkReebGraph;
class vtkTable;
class VTK_GRAPHICS_EXPORT vtkVolumeContourSpectrumFilter :
public vtkDataObjectAlgorithm
{
public:
static vtkVolumeContourSpectrumFilter* New();
vtkTypeMacro(vtkVolumeContourSpectrumFilter, vtkDataObjectAlgorithm);
void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// Set the arc Id for which the contour signature has to be computed.
// Default value: 0
vtkSetMacro(ArcId, vtkIdType);
vtkGetMacro(ArcId, vtkIdType);
// Description:
// Set the number of samples in the output signature
// Default value: 100
vtkSetMacro(NumberOfSamples, int);
vtkGetMacro(NumberOfSamples, int);
// Description:
// Set the scalar field Id
// Default value: 0
vtkSetMacro(FieldId, vtkIdType);
vtkGetMacro(FieldId, vtkIdType);
vtkTable* GetOutput();
protected:
vtkVolumeContourSpectrumFilter();
~vtkVolumeContourSpectrumFilter();
vtkIdType ArcId, FieldId;
int NumberOfSamples;
int FillInputPortInformation(int portNumber, vtkInformation *);
int FillOutputPortInformation(int portNumber, vtkInformation *info);
int RequestData(vtkInformation *request,
vtkInformationVector **inputVector, vtkInformationVector *outputVector);
private:
vtkVolumeContourSpectrumFilter(const vtkVolumeContourSpectrumFilter&); // Not implemented.
void operator=(const vtkVolumeContourSpectrumFilter&); // Not implemented.
};
#endif
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