vtkPolyDataNormals.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkPolyDataNormals.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.
 
=========================================================================*/
#ifndef vtkPolyDataNormals_h
#define vtkPolyDataNormals_h
 
#include "vtkFiltersCoreModule.h" // For export macro
#include "vtkPolyDataAlgorithm.h"
 
class vtkFloatArray;
class vtkIdList;
class vtkPolyData;
 
class VTKFILTERSCORE_EXPORT vtkPolyDataNormals : public vtkPolyDataAlgorithm
{
public:
  vtkTypeMacro(vtkPolyDataNormals,vtkPolyDataAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent);
 
  static vtkPolyDataNormals *New();
 
 
  vtkSetClampMacro(FeatureAngle,double,0.0,180.0);
  vtkGetMacro(FeatureAngle,double);
 
 
  vtkSetMacro(Splitting,int);
  vtkGetMacro(Splitting,int);
  vtkBooleanMacro(Splitting,int);
 
 
  vtkSetMacro(Consistency,int);
  vtkGetMacro(Consistency,int);
  vtkBooleanMacro(Consistency,int);
 
 
  vtkSetMacro(AutoOrientNormals, int);
  vtkGetMacro(AutoOrientNormals, int);
  vtkBooleanMacro(AutoOrientNormals, int);
 
 
  vtkSetMacro(ComputePointNormals,int);
  vtkGetMacro(ComputePointNormals,int);
  vtkBooleanMacro(ComputePointNormals,int);
 
 
  vtkSetMacro(ComputeCellNormals,int);
  vtkGetMacro(ComputeCellNormals,int);
  vtkBooleanMacro(ComputeCellNormals,int);
 
 
  vtkSetMacro(FlipNormals,int);
  vtkGetMacro(FlipNormals,int);
  vtkBooleanMacro(FlipNormals,int);
 
 
  vtkSetMacro(NonManifoldTraversal,int);
  vtkGetMacro(NonManifoldTraversal,int);
  vtkBooleanMacro(NonManifoldTraversal,int);
 
 
  vtkSetClampMacro(OutputPointsPrecision, int, SINGLE_PRECISION, DEFAULT_PRECISION);
  vtkGetMacro(OutputPointsPrecision, int);
 
protected:
  vtkPolyDataNormals();
  ~vtkPolyDataNormals() {}
 
  // Usual data generation method
  int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
 
  double FeatureAngle;
  int Splitting;
  int Consistency;
  int FlipNormals;
  int AutoOrientNormals;
  int NonManifoldTraversal;
  int ComputePointNormals;
  int ComputeCellNormals;
  int NumFlips;
  int OutputPointsPrecision;
 
private:
  vtkIdList *Wave;
  vtkIdList *Wave2;
  vtkIdList *CellIds;
  vtkIdList *Map;
  vtkPolyData *OldMesh;
  vtkPolyData *NewMesh;
  int *Visited;
  vtkFloatArray *PolyNormals;
  double CosAngle;
 
  // Uses the list of cell ids (this->Wave) to propagate a wave of
  // checked and properly ordered polygons.
  void TraverseAndOrder(void);
 
  // Check the point id give to see whether it lies on a feature
  // edge. If so, split the point (i.e., duplicate it) to topologically
  // separate the mesh.
  void MarkAndSplit(vtkIdType ptId);
 
private:
  vtkPolyDataNormals(const vtkPolyDataNormals&);  // Not implemented.
  void operator=(const vtkPolyDataNormals&);  // Not implemented.
};
 
#endif