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/*=========================================================================
Program: Visualization Toolkit
Module: $RCSfile: vtkDataSetTriangleFilter.h,v $
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 vtkDataSetTriangleFilter - triangulate any type of dataset
// .SECTION Description
// vtkDataSetTriangleFilter generates n-dimensional simplices from any input
// dataset. That is, 3D cells are converted to tetrahedral meshes, 2D cells
// to triangles, and so on. The triangulation is guaranteed to be compatible.
//
// This filter uses simple 1D and 2D triangulation techniques for cells
// that are of topological dimension 2 or less. For 3D cells--due to the
// issue of face compatibility across quadrilateral faces (which way to
// orient the diagonal?)--a fancier ordered Delaunay triangulation is used.
// This approach produces templates on the fly for triangulating the
// cells. The templates are then used to do the actual triangulation.
//
// .SECTION See Also
// vtkOrderedTriangulator vtkTriangleFilter
#ifndef __vtkDataSetTriangleFilter_h
#define __vtkDataSetTriangleFilter_h
#include "vtkUnstructuredGridAlgorithm.h"
class vtkOrderedTriangulator;
class VTK_GRAPHICS_EXPORT vtkDataSetTriangleFilter : public vtkUnstructuredGridAlgorithm
{
public:
static vtkDataSetTriangleFilter *New();
vtkTypeRevisionMacro(vtkDataSetTriangleFilter,vtkUnstructuredGridAlgorithm);
void PrintSelf(ostream& os, vtkIndent indent);
protected:
vtkDataSetTriangleFilter();
~vtkDataSetTriangleFilter();
// Usual data generation method
virtual int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
virtual int FillInputPortInformation(int port, vtkInformation *info);
// Used to triangulate 3D cells
vtkOrderedTriangulator *Triangulator;
// Different execute methods depending on whether input is structured or not
void StructuredExecute(vtkDataSet *, vtkUnstructuredGrid *);
void UnstructuredExecute(vtkDataSet *, vtkUnstructuredGrid *);
private:
vtkDataSetTriangleFilter(const vtkDataSetTriangleFilter&); // Not implemented.
void operator=(const vtkDataSetTriangleFilter&); // Not implemented.
};
#endif
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