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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 vtkReebGraphVolumeSkeletonFilter - compute a skeletal embedding of the
// Reeb graph of a scalar field defined on a tetrahedral mesh
// (vtkUnstructuredGrid).
// .SECTION Description
// The filter takes a vtkUnstructuredGrid as an input (port 0), along with a
// vtkReebGraph (port 1).
// The filter samples each arc of the Reeb graph and embeds the samples on the
// barycenter of the corresponding field contour.
// The number of (evenly distributed) arc samples can be defined with
// SetNumberOfSamples() (default value: 10).
// The skeleton can be optionally smoothed with SetNumberOfSmoothingIterations()
// (default value: 10).
// The filter will first try to pull as a scalar field the vtkDataArray with Id
// 'FieldId' of the vtkPolyData, see SetFieldId() (default: 0). The filter will
// abort if this field does not exist.
//
// The filter outputs a vtkTable of points (double[3]). Each column contains the
// samples (sorted by function value) of the corresponding arc. The first and
// the last entry of the column corresponds to the critical nodes at the
// extremity of the arc (each column has NumberOfSamples + 2 entries).
//
// The skeleton can be rendered by linking the samples with geometrical
// primitives (for instance, spheres at critical nodes and cylinders between
// intermediary samples, see Graphics/Testing/Cxx/TestReebGraph.cxx).
//
#ifndef vtkReebGraphVolumeSkeletonFilter_h
#define vtkReebGraphVolumeSkeletonFilter_h
#include "vtkFiltersReebGraphModule.h" // For export macro
#include "vtkDataObjectAlgorithm.h"
class vtkReebGraph;
class vtkTable;
class VTKFILTERSREEBGRAPH_EXPORT vtkReebGraphVolumeSkeletonFilter :
public vtkDataObjectAlgorithm
{
public:
static vtkReebGraphVolumeSkeletonFilter* New();
vtkTypeMacro(vtkReebGraphVolumeSkeletonFilter,
vtkDataObjectAlgorithm);
void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// Set the number of samples along each arc of the Reeb graph
// Default value: 5
vtkSetMacro(NumberOfSamples, int);
vtkGetMacro(NumberOfSamples, int);
// Description:
// Set the number of optional smoothing iterations
// Default value: 30
vtkSetMacro(NumberOfSmoothingIterations, int);
vtkGetMacro(NumberOfSmoothingIterations, int);
// Description:
// Set the scalar field Id
// Default value: 0
vtkSetMacro(FieldId, vtkIdType);
vtkGetMacro(FieldId, vtkIdType);
vtkTable* GetOutput();
protected:
vtkReebGraphVolumeSkeletonFilter();
~vtkReebGraphVolumeSkeletonFilter();
vtkIdType FieldId;
int NumberOfSamples, NumberOfSmoothingIterations;
int FillInputPortInformation(int portNumber, vtkInformation *);
int FillOutputPortInformation(int portNumber, vtkInformation *info);
int RequestData(vtkInformation *request,
vtkInformationVector **inputVector, vtkInformationVector *outputVector);
private:
vtkReebGraphVolumeSkeletonFilter(const vtkReebGraphVolumeSkeletonFilter&); // Not implemented.
void operator=(const vtkReebGraphVolumeSkeletonFilter&); // Not implemented.
};
#endif
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