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VTK
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00001 /*========================================================================= 00002 00003 Program: Visualization Toolkit 00004 Module: vtkUnstructuredGridCellIterator.h 00005 00006 Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen 00007 All rights reserved. 00008 See Copyright.txt or http://www.kitware.com/Copyright.htm for details. 00009 00010 This software is distributed WITHOUT ANY WARRANTY; without even 00011 the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 00012 PURPOSE. See the above copyright notice for more information. 00013 00014 =========================================================================*/ 00023 #ifndef __vtkUnstructuredGridCellIterator_h 00024 #define __vtkUnstructuredGridCellIterator_h 00025 00026 #include "vtkCommonDataModelModule.h" // For export macro 00027 #include "vtkCellIterator.h" 00028 #include "vtkSmartPointer.h" // For vtkSmartPointer 00029 00030 class vtkCellArray; 00031 class vtkUnsignedCharArray; 00032 class vtkUnstructuredGrid; 00033 class vtkPoints; 00034 00035 class VTKCOMMONDATAMODEL_EXPORT vtkUnstructuredGridCellIterator : 00036 public vtkCellIterator 00037 { 00038 public: 00039 static vtkUnstructuredGridCellIterator *New(); 00040 vtkTypeMacro(vtkUnstructuredGridCellIterator, vtkCellIterator) 00041 virtual void PrintSelf(ostream &os, vtkIndent indent); 00042 00043 bool IsDoneWithTraversal(); 00044 vtkIdType GetCellId(); 00045 00046 protected: 00047 vtkUnstructuredGridCellIterator(); 00048 ~vtkUnstructuredGridCellIterator(); 00049 00050 void ResetToFirstCell(); 00051 void IncrementToNextCell(); 00052 void FetchCellType(); 00053 void FetchPointIds(); 00054 void FetchPoints(); 00055 void FetchFaces(); 00056 00057 friend class vtkUnstructuredGrid; 00058 void SetUnstructuredGrid(vtkUnstructuredGrid *ug); 00059 00060 unsigned char *CellTypeBegin; 00061 unsigned char *CellTypePtr; 00062 unsigned char *CellTypeEnd; 00063 00064 vtkIdType *ConnectivityBegin; 00065 vtkIdType *ConnectivityPtr; 00066 vtkIdType *FacesBegin; 00067 vtkIdType *FacesLocsBegin; 00068 vtkIdType *FacesLocsPtr; 00069 00070 // Cache misses make updating ConnectivityPtr in IncrementToNextCell too 00071 // expensive, so we wait to walk through the array until the point ids are 00072 // needed. This variable keeps track of how far we need to increment. 00073 vtkIdType SkippedCells; 00074 void CatchUpSkippedCells(); 00075 00076 vtkSmartPointer<vtkPoints> UnstructuredGridPoints; 00077 00078 private: 00079 vtkUnstructuredGridCellIterator(const vtkUnstructuredGridCellIterator &); // Not implemented. 00080 void operator=(const vtkUnstructuredGridCellIterator &); // Not implemented. 00081 }; 00082 00083 #endif //__vtkUnstructuredGridCellIterator_h
1.8.0