cubicUpwindFitPolynomial.H
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1 /*---------------------------------------------------------------------------*\
2  ========= |
3  \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
4  \\ / O peration |
5  \\ / A nd | Copyright (C) 2011-2015 OpenFOAM Foundation
6  \\/ M anipulation |
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10 
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23 
24 Class
25  Foam::cubicUpwindFitPolynomial
26 
27 Description
28  Cubic polynomial for upwind biased interpolation fitting.
29 
30  Can be used with the UpwindFit scheme to create a cubic surface
31  interpolation scheme
32 
33 \*---------------------------------------------------------------------------*/
34 
35 #ifndef cubicUpwindFitPolynomial_H
36 #define cubicUpwindFitPolynomial_H
37 
38 #include "vector.H"
39 
40 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
41 
42 namespace Foam
43 {
44 
45 /*---------------------------------------------------------------------------*\
46  Class cubicUpwindFitPolynomial Declaration
47 \*---------------------------------------------------------------------------*/
48 
50 {
51 public:
52 
53  // Member functions
54 
55  static label nTerms(const direction dim)
56  {
57  return
58  (
59  dim == 1 ? 4 :
60  dim == 2 ? 8 :
61  dim == 3 ? 14 : 0
62  );
63  }
64 
65  static void addCoeffs
66  (
67  scalar* coeffs,
68  const vector& d,
69  const scalar weight,
70  const direction dim
71  )
72  {
73  label curIdx = 0;
74 
75  coeffs[curIdx++] = weight;
76  coeffs[curIdx++] = weight*d.x();
77  coeffs[curIdx++] = weight*sqr(d.x());
78  coeffs[curIdx++] = weight*pow(d.x(),3);
79 
80  if (dim >= 2)
81  {
82  coeffs[curIdx++] = weight*d.y();
83  coeffs[curIdx++] = weight*d.x()*d.y();
84  coeffs[curIdx++] = weight*sqr(d.y());
85  coeffs[curIdx++] = weight*d.x()*sqr(d.y());
86  }
87  if (dim == 3)
88  {
89  coeffs[curIdx++] = weight*d.z();
90  coeffs[curIdx++] = weight*d.x()*d.z();
91  coeffs[curIdx++] = weight*d.y()*d.z();
92  coeffs[curIdx++] = weight*sqr(d.z());
93  coeffs[curIdx++] = weight*d.x()*d.y()*d.z();
94  coeffs[curIdx++] = weight*d.x()*sqr(d.z());
95  }
96  }
97 };
98 
99 
100 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
101 
102 } // End namespace Foam
103 
104 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
105 
106 #endif
107 
108 // ************************************************************************* //
intWM_LABEL_SIZE_t label
A label is an int32_t or int64_t as specified by the pre-processor macro WM_LABEL_SIZE.
Definition: label.H:59
dimensionedSymmTensor sqr(const dimensionedVector &dv)
uint8_t direction
Definition: direction.H:45
static void addCoeffs(scalar *coeffs, const vector &d, const scalar weight, const direction dim)
const Cmpt & z() const
Definition: VectorI.H:87
const Cmpt & y() const
Definition: VectorI.H:81
Cubic polynomial for upwind biased interpolation fitting.
const Cmpt & x() const
Definition: VectorI.H:75
static label nTerms(const direction dim)
dimensionedScalar pow(const dimensionedScalar &ds, const dimensionedScalar &expt)
Namespace for OpenFOAM.