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Graphics/vtkDataSetSurfaceFilter.h

00001 /*=========================================================================
00002 
00003   Program:   Visualization Toolkit
00004   Module:    $RCSfile: vtkDataSetSurfaceFilter.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 =========================================================================*/
00047 #ifndef __vtkDataSetSurfaceFilter_h
00048 #define __vtkDataSetSurfaceFilter_h
00049 
00050 #include "vtkDataSetToPolyDataFilter.h"
00051 
00052 class vtkFastGeomQuad; 
00053 class vtkPointData;
00054 class vtkPoints;
00055 
00056 class VTK_GRAPHICS_EXPORT vtkDataSetSurfaceFilter : public vtkDataSetToPolyDataFilter
00057 {
00058 public:
00059   static vtkDataSetSurfaceFilter *New();
00060   vtkTypeRevisionMacro(vtkDataSetSurfaceFilter,vtkDataSetToPolyDataFilter);
00061   void PrintSelf(ostream& os, vtkIndent indent);
00062 
00064 
00067   vtkSetMacro(UseStrips, int);
00068   vtkGetMacro(UseStrips, int);
00069   vtkBooleanMacro(UseStrips, int);
00071 
00072 protected:
00073   vtkDataSetSurfaceFilter();
00074   ~vtkDataSetSurfaceFilter();
00075 
00076   int UseStrips;
00077   
00078   void ComputeInputUpdateExtents(vtkDataObject *output);
00079 
00080   void Execute();
00081   void StructuredExecute(vtkDataSet *input, int *ext);
00082   void UnstructuredGridExecute();
00083   void DataSetExecute();
00084   void ExecuteInformation();
00085 
00086   // Helper methods.
00087   void ExecuteFaceStrips(vtkDataSet *input, int maxFlag, int *ext,
00088                          int aAxis, int bAxis, int cAxis);
00089   void ExecuteFaceQuads(vtkDataSet *input, int maxFlag, int *ext,
00090                         int aAxis, int bAxis, int cAxis);
00091 
00092   void InitializeQuadHash(vtkIdType numPoints);
00093   void DeleteQuadHash();
00094   void InsertQuadInHash(vtkIdType a, vtkIdType b, vtkIdType c, vtkIdType d,
00095                         vtkIdType sourceId);
00096   void InsertTriInHash(vtkIdType a, vtkIdType b, vtkIdType c,
00097                        vtkIdType sourceId);
00098   void InitQuadHashTraversal();
00099   vtkFastGeomQuad *GetNextVisibleQuadFromHash();
00100 
00101   vtkFastGeomQuad **QuadHash;
00102   vtkIdType QuadHashLength;
00103   vtkFastGeomQuad *QuadHashTraversal;
00104   vtkIdType QuadHashTraversalIndex;
00105 
00106   vtkIdType *PointMap;
00107   vtkIdType GetOutputPointId(vtkIdType inPtId, vtkDataSet *input, 
00108                              vtkPoints *outPts, vtkPointData *outPD);
00109   
00110   vtkIdType NumberOfNewCells;
00111   
00112 private:
00113   vtkDataSetSurfaceFilter(const vtkDataSetSurfaceFilter&);  // Not implemented.
00114   void operator=(const vtkDataSetSurfaceFilter&);  // Not implemented.
00115 };
00116 
00117 #endif
00118 
00119