quadraticLinearUpwindFitPolynomial.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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23 
24 Class
25  Foam::quadraticLinearUpwindFitPolynomial
26 
27 Description
28  Quadratic polynomial for upwind biased interpolation fitting.
29 
30  Can be used with the UpwindFit scheme to create a quadratic surface
31  interpolation scheme
32 
33 \*---------------------------------------------------------------------------*/
34 
35 #ifndef quadraticLinearUpwindFitPolynomial_H
36 #define quadraticLinearUpwindFitPolynomial_H
37 
38 #include "vector.H"
39 
40 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
41 
42 namespace Foam
43 {
44 
45 /*---------------------------------------------------------------------------*\
46  Class quadraticLinearUpwindFitPolynomial 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 ? 3 :
60  dim == 2 ? 5 :
61  dim == 3 ? 7 : 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 
79  if (dim >= 2)
80  {
81  coeffs[curIdx++] = weight*d.y();
82  coeffs[curIdx++] = weight*d.x()*d.y();
83  }
84  if (dim == 3)
85  {
86  coeffs[curIdx++] = weight*d.z();
87  coeffs[curIdx++] = weight*d.x()*d.z();
88  }
89  }
90 };
91 
92 
93 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
94 
95 } // End namespace Foam
96 
97 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
98 
99 #endif
100 
101 // ************************************************************************* //
unsigned char direction
Definition: direction.H:43
static void addCoeffs(scalar *coeffs, const vector &d, const scalar weight, const direction dim)
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
Namespace for OpenFOAM.
const Cmpt & y() const
Definition: VectorI.H:71
const Cmpt & x() const
Definition: VectorI.H:65
const Cmpt & z() const
Definition: VectorI.H:77
Quadratic polynomial for upwind biased interpolation fitting.
dimensionedSymmTensor sqr(const dimensionedVector &dv)