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Graphics/vtkPolyDataNormals.h

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00001 /*=========================================================================
00002 
00003   Program:   Visualization Toolkit
00004   Module:    $RCSfile: vtkPolyDataNormals.h,v $
00005   Language:  C++
00006 
00007   Copyright (c) 1993-2002 Ken Martin, Will Schroeder, Bill Lorensen 
00008   All rights reserved.
00009   See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
00010 
00011      This software is distributed WITHOUT ANY WARRANTY; without even 
00012      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
00013      PURPOSE.  See the above copyright notice for more information.
00014 
00015 =========================================================================*/
00048 #ifndef __vtkPolyDataNormals_h
00049 #define __vtkPolyDataNormals_h
00050 
00051 #include "vtkPolyDataToPolyDataFilter.h"
00052 
00053 class vtkFloatArray;
00054 class vtkIdList;
00055 class vtkPolyData;
00056 
00057 class VTK_GRAPHICS_EXPORT vtkPolyDataNormals : public vtkPolyDataToPolyDataFilter
00058 {
00059 public:
00060   vtkTypeRevisionMacro(vtkPolyDataNormals,vtkPolyDataToPolyDataFilter);
00061   void PrintSelf(ostream& os, vtkIndent indent);
00062 
00066   static vtkPolyDataNormals *New();
00067 
00069 
00072   vtkSetClampMacro(FeatureAngle,float,0.0,180.0);
00073   vtkGetMacro(FeatureAngle,float);
00075 
00077 
00078   vtkSetMacro(Splitting,int);
00079   vtkGetMacro(Splitting,int);
00080   vtkBooleanMacro(Splitting,int);
00082 
00084 
00085   vtkSetMacro(Consistency,int);
00086   vtkGetMacro(Consistency,int);
00087   vtkBooleanMacro(Consistency,int);
00089 
00091 
00092   vtkSetMacro(ComputePointNormals,int);
00093   vtkGetMacro(ComputePointNormals,int);
00094   vtkBooleanMacro(ComputePointNormals,int);
00096 
00098 
00099   vtkSetMacro(ComputeCellNormals,int);
00100   vtkGetMacro(ComputeCellNormals,int);
00101   vtkBooleanMacro(ComputeCellNormals,int);
00103 
00105 
00109   vtkSetMacro(FlipNormals,int);
00110   vtkGetMacro(FlipNormals,int);
00111   vtkBooleanMacro(FlipNormals,int);
00113 
00115 
00118   vtkSetMacro(NonManifoldTraversal,int);
00119   vtkGetMacro(NonManifoldTraversal,int);
00120   vtkBooleanMacro(NonManifoldTraversal,int);
00122   
00123 protected:
00124   vtkPolyDataNormals();
00125   ~vtkPolyDataNormals() {};
00126 
00127   // Usual data generation method
00128   void Execute();
00129 
00130   float FeatureAngle;
00131   int Splitting;
00132   int Consistency;
00133   int FlipNormals;
00134   int NonManifoldTraversal;
00135   int ComputePointNormals;
00136   int ComputeCellNormals;
00137   int NumFlips;
00138 
00139 private:
00140   vtkIdList *Wave;
00141   vtkIdList *Wave2;
00142   vtkIdList *CellIds;
00143   vtkIdList *Map;
00144   vtkPolyData *OldMesh;
00145   vtkPolyData *NewMesh;
00146   int *Visited;
00147   vtkFloatArray *PolyNormals;
00148   float CosAngle;
00149 
00150   // Uses the list of cell ids (this->Wave) to propagate a wave of
00151   // checked and properly ordered polygons.
00152   void TraverseAndOrder(void);
00153 
00154   // Check the point id give to see whether it lies on a feature
00155   // edge. If so, split the point (i.e., duplicate it) to topologically
00156   // separate the mesh.
00157   void MarkAndSplit(vtkIdType ptId);
00158 
00159 private:
00160   vtkPolyDataNormals(const vtkPolyDataNormals&);  // Not implemented.
00161   void operator=(const vtkPolyDataNormals&);  // Not implemented.
00162 };
00163 
00164 #endif