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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 "vtkCommonDataModelModule.h" // For export macro
39 #include "vtkNonLinearCell.h"
40 
41 class vtkQuadraticEdge;
42 class vtkTriangle;
43 class vtkDoubleArray;
44 
45 class VTKCOMMONDATAMODEL_EXPORT vtkQuadraticTriangle : public vtkNonLinearCell
46 {
47 public:
48  static vtkQuadraticTriangle *New();
49  vtkTypeMacro(vtkQuadraticTriangle,vtkNonLinearCell);
50  void PrintSelf(ostream& os, vtkIndent indent);
51 
53 
55  int GetCellType() {return VTK_QUADRATIC_TRIANGLE;};
56  int GetCellDimension() {return 2;}
57  int GetNumberOfEdges() {return 3;}
58  int GetNumberOfFaces() {return 0;}
59  vtkCell *GetEdge(int edgeId);
60  vtkCell *GetFace(int) {return 0;}
62 
63  int CellBoundary(int subId, double pcoords[3], vtkIdList *pts);
64  void Contour(double value, vtkDataArray *cellScalars,
65  vtkIncrementalPointLocator *locator, vtkCellArray *verts,
66  vtkCellArray *lines, vtkCellArray *polys,
67  vtkPointData *inPd, vtkPointData *outPd,
68  vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd);
69  int EvaluatePosition(double x[3], double* closestPoint,
70  int& subId, double pcoords[3],
71  double& dist2, double *weights);
72  void EvaluateLocation(int& subId, double pcoords[3], double x[3],
73  double *weights);
74  int Triangulate(int index, vtkIdList *ptIds, vtkPoints *pts);
75  void Derivatives(int subId, double pcoords[3], double *values,
76  int dim, double *derivs);
77  virtual double *GetParametricCoords();
78 
80 
83  void Clip(double value, vtkDataArray *cellScalars,
84  vtkIncrementalPointLocator *locator, vtkCellArray *polys,
85  vtkPointData *inPd, vtkPointData *outPd,
86  vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd,
87  int insideOut);
89 
91 
93  int IntersectWithLine(double p1[3], double p2[3], double tol, double& t,
94  double x[3], double pcoords[3], int& subId);
96 
97 
100  int GetParametricCenter(double pcoords[3]);
101 
104  double GetParametricDistance(double pcoords[3]);
105 
108  static void InterpolationFunctions(double pcoords[3], double weights[6]);
111  static void InterpolationDerivs(double pcoords[3], double derivs[12]);
113 
115  virtual void InterpolateFunctions(double pcoords[3], double weights[6])
116  {
117  vtkQuadraticTriangle::InterpolationFunctions(pcoords,weights);
118  }
119  virtual void InterpolateDerivs(double pcoords[3], double derivs[12])
120  {
121  vtkQuadraticTriangle::InterpolationDerivs(pcoords,derivs);
122  }
124 
125 protected:
126  vtkQuadraticTriangle();
127  ~vtkQuadraticTriangle();
128 
129  vtkQuadraticEdge *Edge;
130  vtkTriangle *Face;
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 
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