dox / Filtering
vtkQuadraticTriangle.h

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00001 /*=========================================================================
00002 
00003   Program:   Visualization Toolkit
00004   Module:    $RCSfile: vtkQuadraticTriangle.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 =========================================================================*/
00045 #ifndef __vtkQuadraticTriangle_h
00046 #define __vtkQuadraticTriangle_h
00047 
00048 #include "vtkNonLinearCell.h"
00049 
00050 class vtkPolyData;
00051 class vtkQuadraticEdge;
00052 class vtkTriangle;
00053 class vtkDoubleArray;
00054 
00055 class VTK_FILTERING_EXPORT vtkQuadraticTriangle : public vtkNonLinearCell
00056 {
00057 public:
00058   static vtkQuadraticTriangle *New();
00059   vtkTypeRevisionMacro(vtkQuadraticTriangle,vtkNonLinearCell);
00060   void PrintSelf(ostream& os, vtkIndent indent);
00061 
00063 
00065   int GetCellType() {return VTK_QUADRATIC_TRIANGLE;};
00066   int GetCellDimension() {return 2;}
00067   int GetNumberOfEdges() {return 3;}
00068   int GetNumberOfFaces() {return 0;}
00069   vtkCell *GetEdge(int edgeId);
00070   vtkCell *GetFace(int) {return 0;}
00072 
00073   int CellBoundary(int subId, double pcoords[3], vtkIdList *pts);
00074   void Contour(double value, vtkDataArray *cellScalars, 
00075                vtkPointLocator *locator, vtkCellArray *verts, 
00076                vtkCellArray *lines, vtkCellArray *polys, 
00077                vtkPointData *inPd, vtkPointData *outPd,
00078                vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd);
00079   int EvaluatePosition(double x[3], double* closestPoint,
00080                        int& subId, double pcoords[3], 
00081                        double& dist2, double *weights);
00082   void EvaluateLocation(int& subId, double pcoords[3], double x[3],
00083                         double *weights);
00084   int Triangulate(int index, vtkIdList *ptIds, vtkPoints *pts);
00085   void Derivatives(int subId, double pcoords[3], double *values, 
00086                    int dim, double *derivs);
00087   virtual double *GetParametricCoords();
00088 
00090 
00093   void Clip(double value, vtkDataArray *cellScalars, 
00094             vtkPointLocator *locator, vtkCellArray *polys,
00095             vtkPointData *inPd, vtkPointData *outPd,
00096             vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd,
00097             int insideOut);
00099 
00101 
00103   int IntersectWithLine(double p1[3], double p2[3], double tol, double& t,
00104                         double x[3], double pcoords[3], int& subId);
00106 
00107   
00110   int GetParametricCenter(double pcoords[3]);
00111 
00114   double GetParametricDistance(double pcoords[3]);
00115 
00117 
00118   static void InterpolationFunctions(double pcoords[3], double weights[6]);
00119   static void InterpolationDerivs(double pcoords[3], double derivs[12]);
00121 
00122 protected:
00123   vtkQuadraticTriangle();
00124   ~vtkQuadraticTriangle();
00125 
00126   vtkQuadraticEdge *Edge;
00127   vtkTriangle      *Face;
00128   vtkDoubleArray    *Scalars; //used to avoid New/Delete in contouring/clipping
00129 
00130 private:
00131   vtkQuadraticTriangle(const vtkQuadraticTriangle&);  // Not implemented.
00132   void operator=(const vtkQuadraticTriangle&);  // Not implemented.
00133 };
00134 
00135 #endif
00136 
00137