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dox/Filtering/vtkQuadraticQuad.h

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00001 /*=========================================================================
00002 
00003   Program:   Visualization Toolkit
00004   Module:    $RCSfile: vtkQuadraticQuad.h,v $
00005 
00006   Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
00007   All rights reserved.
00008   See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
00009 
00010      This software is distributed WITHOUT ANY WARRANTY; without even
00011      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
00012      PURPOSE.  See the above copyright notice for more information.
00013 
00014 =========================================================================*/
00035 #ifndef __vtkQuadraticQuad_h
00036 #define __vtkQuadraticQuad_h
00037 
00038 #include "vtkNonLinearCell.h"
00039 
00040 class vtkQuadraticEdge;
00041 class vtkQuad;
00042 class vtkDoubleArray;
00043 
00044 class VTK_FILTERING_EXPORT vtkQuadraticQuad : public vtkNonLinearCell
00045 {
00046 public:
00047   static vtkQuadraticQuad *New();
00048   vtkTypeRevisionMacro(vtkQuadraticQuad,vtkNonLinearCell);
00049   void PrintSelf(ostream& os, vtkIndent indent);
00050 
00052 
00054   int GetCellType() {return VTK_QUADRATIC_QUAD;};
00055   int GetCellDimension() {return 2;}
00056   int GetNumberOfEdges() {return 4;}
00057   int GetNumberOfFaces() {return 0;}
00058   vtkCell *GetEdge(int);
00059   vtkCell *GetFace(int) {return 0;}
00061 
00062   int CellBoundary(int subId, double pcoords[3], vtkIdList *pts);
00063   void Contour(double value, vtkDataArray *cellScalars,
00064                vtkPointLocator *locator, vtkCellArray *verts,
00065                vtkCellArray *lines, vtkCellArray *polys,
00066                vtkPointData *inPd, vtkPointData *outPd,
00067                vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd);
00068   int EvaluatePosition(double x[3], double* closestPoint,
00069                        int& subId, double pcoords[3],
00070                        double& dist2, double *weights);
00071   void EvaluateLocation(int& subId, double pcoords[3], double x[3],
00072                         double *weights);
00073   int Triangulate(int index, vtkIdList *ptIds, vtkPoints *pts);
00074   void Derivatives(int subId, double pcoords[3], double *values,
00075                    int dim, double *derivs);
00076   virtual double *GetParametricCoords();
00077 
00079 
00081   void Clip(double value, vtkDataArray *cellScalars,
00082             vtkPointLocator *locator, vtkCellArray *polys,
00083             vtkPointData *inPd, vtkPointData *outPd,
00084             vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd,
00085             int insideOut);
00087 
00089 
00091   int IntersectWithLine(double p1[3], double p2[3], double tol, double& t,
00092                         double x[3], double pcoords[3], int& subId);
00094 
00095 
00097   int GetParametricCenter(double pcoords[3]);
00098 
00100 
00102   static void InterpolationFunctions(double pcoords[3], double weights[8]);
00103   // Description:
00104   // @deprecated Replaced by vtkQuadraticQuad::InterpolateDerivs as of VTK 5.2
00105   static void InterpolationDerivs(double pcoords[3], double derivs[16]);
00106   // Description:
00107   // Compute the interpolation functions/derivatives
00108   // (aka shape functions/derivatives)
00109   virtual void InterpolateFunctions(double pcoords[3], double weights[8])
00110     {
00111     vtkQuadraticQuad::InterpolationFunctions(pcoords,weights);
00112     }
00113   virtual void InterpolateDerivs(double pcoords[3], double derivs[16])
00114     {
00115     vtkQuadraticQuad::InterpolationDerivs(pcoords,derivs);
00116     }
00118 
00119 protected:
00120   vtkQuadraticQuad();
00121   ~vtkQuadraticQuad();
00122 
00123   vtkQuadraticEdge *Edge;
00124   vtkQuad          *Quad;
00125   vtkPointData     *PointData;
00126   vtkDoubleArray   *Scalars;
00127 
00128   // In order to achieve some functionality we introduce a fake center point
00129   // which require to have some extra functionalities compare to other non-linar
00130   // cells
00131   vtkCellData      *CellData;
00132   vtkDoubleArray   *CellScalars;
00133   void Subdivide(double *weights);
00134   void InterpolateAttributes(vtkPointData *inPd, vtkCellData *inCd, vtkIdType cellId,
00135     vtkDataArray *cellScalars);
00136 
00137 private:
00138   vtkQuadraticQuad(const vtkQuadraticQuad&);  // Not implemented.
00139   void operator=(const vtkQuadraticQuad&);  // Not implemented.
00140 };
00141 //----------------------------------------------------------------------------
00142 inline int vtkQuadraticQuad::GetParametricCenter(double pcoords[3])
00143 {
00144   pcoords[0] = pcoords[1] = 0.5;
00145   pcoords[2] = 0.;
00146   return 0;
00147 }
00148 
00149 #endif
00150 
00151 

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