Graphics/vtkDataSetSurfaceFilter.h Source File

00001 /*=========================================================================
00002 
00003   Program:   Visualization Toolkit
00004   Module:    $RCSfile: vtkDataSetSurfaceFilter.h,v $
00005   Language:  C++
00006 
00007 
00008 Copyright (c) 1993-2001 Ken Martin, Will Schroeder, Bill Lorensen 
00009 All rights reserved.
00010 
00011 Redistribution and use in source and binary forms, with or without
00012 modification, are permitted provided that the following conditions are met:
00013 
00014  * Redistributions of source code must retain the above copyright notice,
00015    this list of conditions and the following disclaimer.
00016 
00017  * Redistributions in binary form must reproduce the above copyright notice,
00018    this list of conditions and the following disclaimer in the documentation
00019    and/or other materials provided with the distribution.
00020 
00021  * Neither name of Ken Martin, Will Schroeder, or Bill Lorensen nor the names
00022    of any contributors may be used to endorse or promote products derived
00023    from this software without specific prior written permission.
00024 
00025  * Modified source versions must be plainly marked as such, and must not be
00026    misrepresented as being the original software.
00027 
00028 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
00029 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00030 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00031 ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR
00032 ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
00033 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
00034 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
00035 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
00036 OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
00037 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00038 
00039 =========================================================================*/
00058 #ifndef __vtkDataSetSurfaceFilter_h
00059 #define __vtkDataSetSurfaceFilter_h
00060 
00061 #include "vtkDataSetToPolyDataFilter.h"
00062 #include "vtkStructuredGrid.h"
00063 #include "vtkImageData.h"
00064 #include "vtkUnstructuredGrid.h"
00065 
00066 class vtkFastGeomQuad; 
00067 
00068 
00069 class VTK_GRAPHICS_EXPORT vtkDataSetSurfaceFilter : public vtkDataSetToPolyDataFilter
00070 {
00071 public:
00072   static vtkDataSetSurfaceFilter *New();
00073   vtkTypeMacro(vtkDataSetSurfaceFilter,vtkDataSetToPolyDataFilter);
00074   void PrintSelf(ostream& os, vtkIndent indent);
00075 
00077 
00080   vtkSetMacro(UseStrips, int);
00081   vtkGetMacro(UseStrips, int);
00082   vtkBooleanMacro(UseStrips, int);
00084 
00085 protected:
00086   vtkDataSetSurfaceFilter();
00087   ~vtkDataSetSurfaceFilter();
00088 
00089   int UseStrips;
00090   
00091   void ComputeInputUpdateExtents(vtkDataObject *output);
00092 
00093   void Execute();
00094   void StructuredExecute(vtkDataSet *input, int *ext);
00095   void UnstructuredGridExecute();
00096   void DataSetExecute();
00097   void ExecuteInformation();
00098 
00099   // Helper methods.
00100   void ExecuteFaceStrips(vtkDataSet *input, int maxFlag, int *ext,
00101                          int aAxis, int bAxis, int cAxis);
00102   void ExecuteFaceQuads(vtkDataSet *input, int maxFlag, int *ext,
00103                         int aAxis, int bAxis, int cAxis);
00104 
00105   void InitializeQuadHash(vtkIdType numPoints);
00106   void DeleteQuadHash();
00107   void InsertQuadInHash(vtkIdType a, vtkIdType b, vtkIdType c, vtkIdType d,
00108                         vtkIdType sourceId);
00109   void InsertTriInHash(vtkIdType a, vtkIdType b, vtkIdType c,
00110                        vtkIdType sourceId);
00111   void InitQuadHashTraversal();
00112   vtkFastGeomQuad *GetNextVisibleQuadFromHash();
00113 
00114   vtkFastGeomQuad **QuadHash;
00115   vtkIdType QuadHashLength;
00116   vtkFastGeomQuad *QuadHashTraversal;
00117   vtkIdType QuadHashTraversalIndex;
00118 
00119   vtkIdType *PointMap;
00120   vtkIdType GetOutputPointId(vtkIdType inPtId, vtkDataSet *input, 
00121                              vtkPoints *outPts, vtkPointData *outPD);
00122 private:
00123   vtkDataSetSurfaceFilter(const vtkDataSetSurfaceFilter&);  // Not implemented.
00124   void operator=(const vtkDataSetSurfaceFilter&);  // Not implemented.
00125 };
00126 
00127 #endif
00128 
00129