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/*=========================================================================
Program: Visualization Toolkit
Module: $RCSfile: vtkGenericDataSetTessellator.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 vtkGenericDataSetTessellator - tessellates generic, higher-order datasets into linear cells
// .SECTION Description
// vtkGenericDataSetTessellator is a filter that subdivides a
// vtkGenericDataSet into linear elements (i.e., linear VTK
// cells). Tetrahedra are produced from 3D cells; triangles from 2D cells;
// and lines from 1D cells. The subdivision process depends on the cell
// tessellator associated with the input generic dataset, and its associated
// error metric. (These can be specified by the user if necessary.)
//
// This filter is typically used to convert a higher-order, complex dataset
// represented vtkGenericDataSet into a conventional vtkDataSet that can
// be operated on by linear VTK graphics filters.
// .SECTION See Also
// vtkGenericDataSetTessellator vtkGenericCellTessellator
// vtkGenericSubdivisionErrorMetric
#ifndef __vtkGenericDataSetTessellator_h
#define __vtkGenericDataSetTessellator_h
#include "vtkUnstructuredGridAlgorithm.h"
class vtkPointData;
class vtkPointLocator;
class VTK_GENERIC_FILTERING_EXPORT vtkGenericDataSetTessellator : public vtkUnstructuredGridAlgorithm
{
public:
// Description:
// Standard VTK methods.
static vtkGenericDataSetTessellator *New();
vtkTypeRevisionMacro(vtkGenericDataSetTessellator,
vtkUnstructuredGridAlgorithm);
void PrintSelf(ostream& os, vtkIndent indent);
// Description
// Turn on/off generation of a cell centered attribute with ids of the
// original cells (as an input cell is tessellated into several linear
// cells).
// The name of the data array is "OriginalIds". It is true by default.
vtkSetMacro(KeepCellIds, int);
vtkGetMacro(KeepCellIds, int);
vtkBooleanMacro(KeepCellIds, int);
// Description:
// Turn on/off merging of coincident points. Note that is merging is
// on, points with different point attributes (e.g., normals) are merged,
// which may cause rendering artifacts.
vtkSetMacro(Merging,int);
vtkGetMacro(Merging,int);
vtkBooleanMacro(Merging,int);
// Description:
// Set / get a spatial locator for merging points. By
// default an instance of vtkMergePoints is used.
void SetLocator(vtkPointLocator *locator);
vtkGetObjectMacro(Locator,vtkPointLocator);
// Description:
// Create default locator. Used to create one when none is specified.
void CreateDefaultLocator();
// Description:
// Return the MTime also considering the locator.
unsigned long GetMTime();
protected:
vtkGenericDataSetTessellator();
~vtkGenericDataSetTessellator();
int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
int FillInputPortInformation(int, vtkInformation*);
// See Set/Get KeepCellIds() for explanations.
int KeepCellIds;
// Used internal by vtkGenericAdaptorCell::Tessellate()
vtkPointData *internalPD;
int Merging;
vtkPointLocator *Locator;
private:
vtkGenericDataSetTessellator(const vtkGenericDataSetTessellator&); // Not implemented.
void operator=(const vtkGenericDataSetTessellator&); // Not implemented.
};
#endif
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