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# Common/vtkQuad.h

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    00001 /*=========================================================================
    00002
    00003   Program:   Visualization Toolkit
    00004   Module:    $RCSfile: vtkQuad.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 __vtkQuad_h
    00049 #define __vtkQuad_h
    00050
    00051 #include "vtkCell.h"
    00052
    00053 class vtkLine;
    00054
    00055 class VTK_COMMON_EXPORT vtkQuad : public vtkCell
    00056 {
    00057 public:
    00058   static vtkQuad *New();
    00059   vtkTypeRevisionMacro(vtkQuad,vtkCell);
    00060
    00062
    00063   int GetCellType() {return VTK_QUAD;};
    00064   int GetCellDimension() {return 2;};
    00065   int GetNumberOfEdges() {return 4;};
    00066   int GetNumberOfFaces() {return 0;};
    00067   vtkCell *GetEdge(int edgeId);
    00068   vtkCell *GetFace(int) {return 0;};
    00069   int CellBoundary(int subId, float pcoords[3], vtkIdList *pts);
    00070   void Contour(float value, vtkDataArray *cellScalars,
    00071                vtkPointLocator *locator, vtkCellArray *verts,
    00072                vtkCellArray *lines, vtkCellArray *polys,
    00073                vtkPointData *inPd, vtkPointData *outPd,
    00074                vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd);
    00075   int EvaluatePosition(float x[3], float* closestPoint,
    00076                        int& subId, float pcoords[3],
    00077                        float& dist2, float *weights);
    00078   void EvaluateLocation(int& subId, float pcoords[3], float x[3],
    00079                         float *weights);
    00080   int IntersectWithLine(float p1[3], float p2[3], float tol, float& t,
    00081                         float x[3], float pcoords[3], int& subId);
    00082   int Triangulate(int index, vtkIdList *ptIds, vtkPoints *pts);
    00083   void Derivatives(int subId, float pcoords[3], float *values,
    00084                    int dim, float *derivs);
    00086
    00088
    00090   void Clip(float value, vtkDataArray *cellScalars,
    00091             vtkPointLocator *locator, vtkCellArray *polys,
    00092             vtkPointData *inPd, vtkPointData *outPd,
    00093             vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd,
    00094             int insideOut);
    00096
    00098
    00099   static void InterpolationFunctions(float pcoords[3], float sf[4]);
    00100   static void InterpolationDerivs(float pcoords[3], float derivs[8]);
    00102
    00103
    00104 protected:
    00105   vtkQuad();
    00106   ~vtkQuad();
    00107
    00108   vtkLine *Line;
    00109
    00110 private:
    00111   vtkQuad(const vtkQuad&);  // Not implemented.
    00112   void operator=(const vtkQuad&);  // Not implemented.
    00113 };
    00114
    00115 #endif
    00116
    00117