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/*=========================================================================
Program: Visualization Toolkit
Module: vtkEdgeCenters.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 vtkEdgeCenters - generate points at center of edges
// .SECTION Description
// vtkEdgeCenters is a filter that takes as input any graph and
// generates on output points at the center of the cells in the dataset.
// These points can be used for placing glyphs (vtkGlyph3D) or labeling
// (vtkLabeledDataMapper). (The center is the parametric center of the
// cell, not necessarily the geometric or bounding box center.) The edge
// attributes will be associated with the points on output.
//
// .SECTION Caveats
// You can choose to generate just points or points and vertex cells.
// Vertex cells are drawn during rendering; points are not. Use the ivar
// VertexCells to generate cells.
// .SECTION See Also
// vtkGlyph3D vtkLabeledDataMapper
#ifndef vtkEdgeCenters_h
#define vtkEdgeCenters_h
#include "vtkInfovisCoreModule.h" // For export macro
#include "vtkPolyDataAlgorithm.h"
class VTKINFOVISCORE_EXPORT vtkEdgeCenters : public vtkPolyDataAlgorithm
{
public:
vtkTypeMacro(vtkEdgeCenters,vtkPolyDataAlgorithm);
void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// Construct object with vertex cell generation turned off.
static vtkEdgeCenters *New();
// Description:
// Enable/disable the generation of vertex cells.
vtkSetMacro(VertexCells,int);
vtkGetMacro(VertexCells,int);
vtkBooleanMacro(VertexCells,int);
protected:
vtkEdgeCenters();
~vtkEdgeCenters() {}
virtual int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
virtual int FillInputPortInformation(int port, vtkInformation *info);
int VertexCells;
private:
vtkEdgeCenters(const vtkEdgeCenters&); // Not implemented.
void operator=(const vtkEdgeCenters&); // Not implemented.
};
#endif
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