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vtkTriangleStrip.h

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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 =========================================================================*/
00036 #ifndef __vtkTriangleStrip_h
00037 #define __vtkTriangleStrip_h
00038 
00039 #include "vtkCell.h"
00040 
00041 class vtkLine;
00042 class vtkTriangle;
00043 
00044 class VTK_COMMON_EXPORT vtkTriangleStrip : public vtkCell
00045 {
00046 public:
00047   static vtkTriangleStrip *New();
00048   vtkTypeRevisionMacro(vtkTriangleStrip,vtkCell);
00049 
00051 
00052   int GetCellType() {return VTK_TRIANGLE_STRIP;};
00053   int GetCellDimension() {return 2;};
00054   int GetNumberOfEdges() {return this->GetNumberOfPoints();};
00055   int GetNumberOfFaces() {return 0;};
00056   vtkCell *GetEdge(int edgeId);
00057   vtkCell *GetFace(int vtkNotUsed(faceId)) {return 0;};
00058   int CellBoundary(int subId, float pcoords[3], vtkIdList *pts);
00059   void Contour(float value, vtkDataArray *cellScalars, 
00060                vtkPointLocator *locator, vtkCellArray *verts, 
00061                vtkCellArray *lines, vtkCellArray *polys, 
00062                vtkPointData *inPd, vtkPointData *outPd,
00063                vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd);
00064   void Clip(float value, vtkDataArray *cellScalars, 
00065             vtkPointLocator *locator, vtkCellArray *polys,
00066             vtkPointData *inPd, vtkPointData *outPd,
00067             vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd,
00068             int insideOut);
00070 
00071   int EvaluatePosition(float x[3], float* closestPoint,
00072                        int& subId, float pcoords[3],
00073                        float& dist2, float *weights);
00074   void EvaluateLocation(int& subId, float pcoords[3], float x[3],
00075                         float *weights);
00076   int IntersectWithLine(float p1[3], float p2[3], float tol, float& t,
00077                         float x[3], float pcoords[3], int& subId);
00078   int Triangulate(int index, vtkIdList *ptIds, vtkPoints *pts);
00079   void Derivatives(int subId, float pcoords[3], float *values, 
00080                    int dim, float *derivs);
00081 
00083   int GetParametricCenter(float pcoords[3]);
00084 
00088   static void DecomposeStrip(int npts, vtkIdType *pts, vtkCellArray *tris);
00089   
00090 
00091 protected:
00092   vtkTriangleStrip();
00093   ~vtkTriangleStrip();
00094 
00095   vtkLine *Line;
00096   vtkTriangle *Triangle;
00097   
00098 private:
00099   vtkTriangleStrip(const vtkTriangleStrip&);  // Not implemented.
00100   void operator=(const vtkTriangleStrip&);  // Not implemented.
00101 };
00102 
00103 #endif
00104 
00105