VTK
vtkQuadraticTriangle.h
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1 /*=========================================================================
2 
3  Program: Visualization Toolkit
4  Module: vtkQuadraticTriangle.h
5 
6  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
7  All rights reserved.
8  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
9 
10  This software is distributed WITHOUT ANY WARRANTY; without even
11  the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
12  PURPOSE. See the above copyright notice for more information.
13 
14 =========================================================================*/
35 #ifndef __vtkQuadraticTriangle_h
36 #define __vtkQuadraticTriangle_h
37 
38 #include "vtkNonLinearCell.h"
39 
40 class vtkQuadraticEdge;
41 class vtkTriangle;
42 class vtkDoubleArray;
43 
45 {
46 public:
47  static vtkQuadraticTriangle *New();
49  void PrintSelf(ostream& os, vtkIndent indent);
50 
52 
55  int GetCellDimension() {return 2;}
56  int GetNumberOfEdges() {return 3;}
57  int GetNumberOfFaces() {return 0;}
58  vtkCell *GetEdge(int edgeId);
59  vtkCell *GetFace(int) {return 0;}
61 
62  int CellBoundary(int subId, double pcoords[3], vtkIdList *pts);
63  void Contour(double value, vtkDataArray *cellScalars,
65  vtkCellArray *lines, vtkCellArray *polys,
66  vtkPointData *inPd, vtkPointData *outPd,
67  vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd);
68  int EvaluatePosition(double x[3], double* closestPoint,
69  int& subId, double pcoords[3],
70  double& dist2, double *weights);
71  void EvaluateLocation(int& subId, double pcoords[3], double x[3],
72  double *weights);
73  int Triangulate(int index, vtkIdList *ptIds, vtkPoints *pts);
74  void Derivatives(int subId, double pcoords[3], double *values,
75  int dim, double *derivs);
76  virtual double *GetParametricCoords();
77 
79 
82  void Clip(double value, vtkDataArray *cellScalars,
84  vtkPointData *inPd, vtkPointData *outPd,
85  vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd,
86  int insideOut);
88 
90 
92  int IntersectWithLine(double p1[3], double p2[3], double tol, double& t,
93  double x[3], double pcoords[3], int& subId);
95 
96 
99  int GetParametricCenter(double pcoords[3]);
100 
103  double GetParametricDistance(double pcoords[3]);
104 
106 
108  static void InterpolationFunctions(double pcoords[3], double weights[6]);
109  // Description:
110  // @deprecated Replaced by vtkQuadraticTriangle::InterpolateDerivs as of VTK 5.2
111  static void InterpolationDerivs(double pcoords[3], double derivs[12]);
112  // Description:
113  // Compute the interpolation functions/derivatives
114  // (aka shape functions/derivatives)
115  virtual void InterpolateFunctions(double pcoords[3], double weights[6])
116  {
118  }
119  virtual void InterpolateDerivs(double pcoords[3], double derivs[12])
120  {
122  }
124 
125 protected:
128 
131  vtkDoubleArray *Scalars; //used to avoid New/Delete in contouring/clipping
132 
133 private:
134  vtkQuadraticTriangle(const vtkQuadraticTriangle&); // Not implemented.
135  void operator=(const vtkQuadraticTriangle&); // Not implemented.
136 };
137 //----------------------------------------------------------------------------
138 inline int vtkQuadraticTriangle::GetParametricCenter(double pcoords[3])
139 {
140  pcoords[0] = pcoords[1] = 1./3;
141  pcoords[2] = 0.0;
142  return 0;
143 }
144 
145 
146 #endif
147 
148