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# Common/vtkHexahedron.h

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    00001 /*=========================================================================
    00002
    00003   Program:   Visualization Toolkit
    00004   Module:    $RCSfile: vtkHexahedron.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 =========================================================================*/
    00050 #ifndef __vtkHexahedron_h
    00051 #define __vtkHexahedron_h
    00052
    00053 #include "vtkCell3D.h"
    00054
    00055 class vtkLine;
    00056 class vtkQuad;
    00057
    00058 class VTK_COMMON_EXPORT vtkHexahedron : public vtkCell3D
    00059 {
    00060 public:
    00061   static vtkHexahedron *New();
    00062   vtkTypeRevisionMacro(vtkHexahedron,vtkCell3D);
    00063
    00065
    00066   virtual void GetEdgePoints(int edgeId, int* &pts);
    00067   virtual void GetFacePoints(int faceId, int* &pts);
    00068   virtual float *GetParametricCoords();
    00070
    00072
    00073   int GetCellType() {return VTK_HEXAHEDRON;}
    00074   int GetNumberOfEdges() {return 12;}
    00075   int GetNumberOfFaces() {return 6;}
    00076   vtkCell *GetEdge(int edgeId);
    00077   vtkCell *GetFace(int faceId);
    00078   int CellBoundary(int subId, float pcoords[3], vtkIdList *pts);
    00079   void Contour(float value, vtkDataArray *cellScalars,
    00080                vtkPointLocator *locator, vtkCellArray *verts,
    00081                vtkCellArray *lines, vtkCellArray *polys,
    00082                vtkPointData *inPd, vtkPointData *outPd,
    00083                vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd);
    00085
    00086   int EvaluatePosition(float x[3], float* closestPoint,
    00087                        int& subId, float pcoords[3],
    00088                        float& dist2, float *weights);
    00089   void EvaluateLocation(int& subId, float pcoords[3], float x[3],
    00090                         float *weights);
    00091   int IntersectWithLine(float p1[3], float p2[3], float tol, float& t,
    00092                         float x[3], float pcoords[3], int& subId);
    00093   int Triangulate(int index, vtkIdList *ptIds, vtkPoints *pts);
    00094   void Derivatives(int subId, float pcoords[3], float *values,
    00095                    int dim, float *derivs);
    00096
    00098
    00099   static void InterpolationFunctions(float pcoords[3], float weights[8]);
    00100   static void InterpolationDerivs(float pcoords[3], float derivs[24]);
    00101   static int *GetEdgeArray(int edgeId);
    00102   static int *GetFaceArray(int faceId);
    00104
    00108   void JacobianInverse(float pcoords[3], double **inverse, float derivs[24]);
    00109
    00110 protected:
    00111   vtkHexahedron();
    00112   ~vtkHexahedron();
    00113
    00114   vtkLine *Line;
    00115   vtkQuad *Quad;
    00116
    00117 private:
    00118   vtkHexahedron(const vtkHexahedron&);  // Not implemented.
    00119   void operator=(const vtkHexahedron&);  // Not implemented.
    00120 };
    00121
    00122 #endif
    00123
    00124