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Common/vtkTriangleStrip.h

00001 /*=========================================================================
00002 
00003   Program:   Visualization Toolkit
00004   Module:    $RCSfile: vtkTriangleStrip.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 __vtkTriangleStrip_h
00049 #define __vtkTriangleStrip_h
00050 
00051 #include "vtkCell.h"
00052 
00053 class vtkLine;
00054 class vtkTriangle;
00055 
00056 class VTK_COMMON_EXPORT vtkTriangleStrip : public vtkCell
00057 {
00058 public:
00059   static vtkTriangleStrip *New();
00060   vtkTypeRevisionMacro(vtkTriangleStrip,vtkCell);
00061 
00063 
00064   int GetCellType() {return VTK_TRIANGLE_STRIP;};
00065   int GetCellDimension() {return 2;};
00066   int GetNumberOfEdges() {return this->GetNumberOfPoints();};
00067   int GetNumberOfFaces() {return 0;};
00068   vtkCell *GetEdge(int edgeId);
00069   vtkCell *GetFace(int vtkNotUsed(faceId)) {return 0;};
00070   int CellBoundary(int subId, float pcoords[3], vtkIdList *pts);
00071   void Contour(float value, vtkDataArray *cellScalars, 
00072                vtkPointLocator *locator, vtkCellArray *verts, 
00073                vtkCellArray *lines, vtkCellArray *polys, 
00074                vtkPointData *inPd, vtkPointData *outPd,
00075                vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd);
00076   void Clip(float value, vtkDataArray *cellScalars, 
00077             vtkPointLocator *locator, vtkCellArray *polys,
00078             vtkPointData *inPd, vtkPointData *outPd,
00079             vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd,
00080             int insideOut);
00082 
00083   int EvaluatePosition(float x[3], float* closestPoint,
00084                        int& subId, float pcoords[3],
00085                        float& dist2, float *weights);
00086   void EvaluateLocation(int& subId, float pcoords[3], float x[3],
00087                         float *weights);
00088   int IntersectWithLine(float p1[3], float p2[3], float tol, float& t,
00089                         float x[3], float pcoords[3], int& subId);
00090   int Triangulate(int index, vtkIdList *ptIds, vtkPoints *pts);
00091   void Derivatives(int subId, float pcoords[3], float *values, 
00092                    int dim, float *derivs);
00093 
00095   int GetParametricCenter(float pcoords[3]);
00096 
00100   static void DecomposeStrip(int npts, vtkIdType *pts, vtkCellArray *tris);
00101   
00102 
00103 protected:
00104   vtkTriangleStrip();
00105   ~vtkTriangleStrip();
00106 
00107   vtkLine *Line;
00108   vtkTriangle *Triangle;
00109   
00110 private:
00111   vtkTriangleStrip(const vtkTriangleStrip&);  // Not implemented.
00112   void operator=(const vtkTriangleStrip&);  // Not implemented.
00113 };
00114 
00115 #endif
00116 
00117