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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 =========================================================================*/
00049 #ifndef __vtkTriangleStrip_h
00050 #define __vtkTriangleStrip_h
00051 
00052 #include "vtkCell.h"
00053 
00054 class vtkLine;
00055 class vtkTriangle;
00056 
00057 class VTK_COMMON_EXPORT vtkTriangleStrip : public vtkCell
00058 {
00059 public:
00060   static vtkTriangleStrip *New();
00061   vtkTypeRevisionMacro(vtkTriangleStrip,vtkCell);
00062 
00064 
00065   int GetCellType() {return VTK_TRIANGLE_STRIP;};
00066   int GetCellDimension() {return 2;};
00067   int GetNumberOfEdges() {return this->GetNumberOfPoints();};
00068   int GetNumberOfFaces() {return 0;};
00069   vtkCell *GetEdge(int edgeId);
00070   vtkCell *GetFace(int vtkNotUsed(faceId)) {return 0;};
00071   int CellBoundary(int subId, float pcoords[3], vtkIdList *pts);
00072   void Contour(float value, vtkDataArray *cellScalars, 
00073                vtkPointLocator *locator, vtkCellArray *verts, 
00074                vtkCellArray *lines, vtkCellArray *polys, 
00075                vtkPointData *inPd, vtkPointData *outPd,
00076                vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd);
00077   void Clip(float value, vtkDataArray *cellScalars, 
00078             vtkPointLocator *locator, vtkCellArray *polys,
00079             vtkPointData *inPd, vtkPointData *outPd,
00080             vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd,
00081             int insideOut);
00083 
00084   int EvaluatePosition(float x[3], float* closestPoint,
00085                        int& subId, float pcoords[3],
00086                        float& dist2, float *weights);
00087   void EvaluateLocation(int& subId, float pcoords[3], float x[3],
00088                         float *weights);
00089   int IntersectWithLine(float p1[3], float p2[3], float tol, float& t,
00090                         float x[3], float pcoords[3], int& subId);
00091   int Triangulate(int index, vtkIdList *ptIds, vtkPoints *pts);
00092   void Derivatives(int subId, float pcoords[3], float *values, 
00093                    int dim, float *derivs);
00094 
00096   int GetParametricCenter(float pcoords[3]);
00097 
00101   static void DecomposeStrip(int npts, vtkIdType *pts, vtkCellArray *tris);
00102   
00103 
00104 protected:
00105   vtkTriangleStrip();
00106   ~vtkTriangleStrip();
00107 
00108   vtkLine *Line;
00109   vtkTriangle *Triangle;
00110   
00111 private:
00112   vtkTriangleStrip(const vtkTriangleStrip&);  // Not implemented.
00113   void operator=(const vtkTriangleStrip&);  // Not implemented.
00114 };
00115 
00116 #endif
00117 
00118