FreeFOAM The Cross-Platform CFD Toolkit
pointConstraintI.H
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3  \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
4  \\ / O peration |
5  \\ / A nd | Copyright (C) 1991-2010 OpenCFD Ltd.
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25 
26 // * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
27 
29 :
30  Tuple2<label, vector>(0, vector::zero)
31 {}
32 
33 
35 :
36  Tuple2<label, vector>(is)
37 {}
38 
39 
40 // * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
41 
43 {
44  if (first() == 0)
45  {
46  first() = 1;
47  second() = cd;
48  }
49  else if (first() == 1)
50  {
51  vector planeNormal = cd ^ second();
52  scalar magPlaneNormal = mag(planeNormal);
53 
54  if (magPlaneNormal > 1e-3)
55  {
56  first() = 2;
57  second() = planeNormal/magPlaneNormal;
58  }
59  }
60  else if (first() == 2)
61  {
62  if (mag(cd & second()) > 1e-3)
63  {
64  first() = 3;
65  second() = vector::zero;
66  }
67  }
68 }
69 
70 
72 {
73  if (first() == 0)
74  {
75  return I;
76  }
77  else if (first() == 1)
78  {
79  return I - sqr(second());
80  }
81  else if (first() == 2)
82  {
83  return sqr(second());
84  }
85  else
86  {
87  return tensor::zero;
88  }
89 }
90 
91 
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