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vtkFeatureEdges.h
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vtkFeatureEdges.h
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/*=========================================================================
Program: Visualization Toolkit
Module: vtkFeatureEdges.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.
=========================================================================*/
/**
* @class vtkFeatureEdges
* @brief extract boundary, non-manifold, and/or sharp edges from polygonal data
*
* vtkFeatureEdges is a filter to extract special types of edges from
* input polygonal data. These edges are either 1) boundary (used by
* one polygon) or a line cell; 2) non-manifold (used by three or more
* polygons); 3) feature edges (edges used by two triangles and whose
* dihedral angle > FeatureAngle); or 4) manifold edges (edges used by
* exactly two polygons). These edges may be extracted in any
* combination. Edges may also be "colored" (i.e., scalar values assigned)
* based on edge type. The cell coloring is assigned to the cell data of
* the extracted edges.
*
* @warning
* To see the coloring of the liens you may have to set the ScalarMode
* instance variable of the mapper to SetScalarModeToUseCellData(). (This
* is only a problem if there are point data scalars.)
*
* @sa
* vtkExtractEdges
*/
#ifndef vtkFeatureEdges_h
#define vtkFeatureEdges_h
#include "vtkFiltersCoreModule.h" // For export macro
#include "vtkPolyDataAlgorithm.h"
class vtkIncrementalPointLocator;
class VTKFILTERSCORE_EXPORT vtkFeatureEdges : public vtkPolyDataAlgorithm
{
public:
vtkTypeMacro(vtkFeatureEdges,vtkPolyDataAlgorithm);
void PrintSelf(ostream& os, vtkIndent indent) VTK_OVERRIDE;
/**
* Construct object with feature angle = 30; all types of edges extracted
* and colored.
*/
static vtkFeatureEdges *New();
//@{
/**
* Turn on/off the extraction of boundary edges.
*/
vtkSetMacro(BoundaryEdges,int);
vtkGetMacro(BoundaryEdges,int);
vtkBooleanMacro(BoundaryEdges,int);
//@}
//@{
/**
* Turn on/off the extraction of feature edges.
*/
vtkSetMacro(FeatureEdges,int);
vtkGetMacro(FeatureEdges,int);
vtkBooleanMacro(FeatureEdges,int);
//@}
//@{
/**
* Specify the feature angle for extracting feature edges.
*/
vtkSetClampMacro(FeatureAngle,double,0.0,180.0);
vtkGetMacro(FeatureAngle,double);
//@}
//@{
/**
* Turn on/off the extraction of non-manifold edges.
*/
vtkSetMacro(NonManifoldEdges,int);
vtkGetMacro(NonManifoldEdges,int);
vtkBooleanMacro(NonManifoldEdges,int);
//@}
//@{
/**
* Turn on/off the extraction of manifold edges.
*/
vtkSetMacro(ManifoldEdges,int);
vtkGetMacro(ManifoldEdges,int);
vtkBooleanMacro(ManifoldEdges,int);
//@}
//@{
/**
* Turn on/off the coloring of edges by type.
*/
vtkSetMacro(Coloring,int);
vtkGetMacro(Coloring,int);
vtkBooleanMacro(Coloring,int);
//@}
//@{
/**
* Set / get a spatial locator for merging points. By
* default an instance of vtkMergePoints is used.
*/
void SetLocator(vtkIncrementalPointLocator *locator);
vtkGetObjectMacro(Locator,vtkIncrementalPointLocator);
//@}
/**
* Create default locator. Used to create one when none is specified.
*/
void CreateDefaultLocator();
/**
* Return MTime also considering the locator.
*/
vtkMTimeType GetMTime() VTK_OVERRIDE;
//@{
/**
* Set/get the desired precision for the output types. See the documentation
* for the vtkAlgorithm::DesiredOutputPrecision enum for an explanation of
* the available precision settings.
*/
vtkSetMacro(OutputPointsPrecision,int);
vtkGetMacro(OutputPointsPrecision,int);
//@}
protected:
vtkFeatureEdges();
~vtkFeatureEdges() VTK_OVERRIDE;
// Usual data generation method
int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *) VTK_OVERRIDE;
int RequestUpdateExtent(vtkInformation *, vtkInformationVector **, vtkInformationVector *) VTK_OVERRIDE;
double FeatureAngle;
int BoundaryEdges;
int FeatureEdges;
int NonManifoldEdges;
int ManifoldEdges;
int Coloring;
int OutputPointsPrecision;
vtkIncrementalPointLocator *Locator;
private:
vtkFeatureEdges(const vtkFeatureEdges&) VTK_DELETE_FUNCTION;
void operator=(const vtkFeatureEdges&) VTK_DELETE_FUNCTION;
};
#endif