quadraticFitPolynomial.H
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5  \\ / A nd | www.openfoam.com
6  \\/ M anipulation |
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25 
26 Class
27  Foam::quadraticFitPolynomial
28 
29 Description
30  Quadratic polynomial for centred interpolation fitting.
31 
32  Can be used with the CentredFit scheme to create a quadratic surface
33  interpolation scheme
34 
35 \*---------------------------------------------------------------------------*/
36 
37 #ifndef quadraticFitPolynomial_H
38 #define quadraticFitPolynomial_H
39 
40 #include "vector.H"
41 
42 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
43 
44 namespace Foam
45 {
46 
47 /*---------------------------------------------------------------------------*\
48  Class quadraticFitPolynomial Declaration
49 \*---------------------------------------------------------------------------*/
50 
52 {
53 public:
54 
55  // Member functions
56 
57  static label nTerms(const direction dim)
58  {
59  return
60  (
61  dim == 1 ? 3 :
62  dim == 2 ? 6 :
63  dim == 3 ? 9 : 0
64  );
65  }
66 
67  static void addCoeffs
68  (
69  scalar* coeffs,
70  const vector& d,
71  const scalar weight,
72  const direction dim
73  )
74  {
75  label curIdx = 0;
76 
77  coeffs[curIdx++] = weight;
78  coeffs[curIdx++] = weight*d.x();
79  coeffs[curIdx++] = weight*sqr(d.x());
80 
81  if (dim >= 2)
82  {
83  coeffs[curIdx++] = weight*d.y();
84  coeffs[curIdx++] = weight*d.x()*d.y();
85  coeffs[curIdx++] = weight*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*sqr(d.z());
92  }
93  }
94 };
95 
96 
97 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
98 
99 } // End namespace Foam
100 
101 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
102 
103 #endif
104 
105 // ************************************************************************* //
Foam::Vector::x
const Cmpt & x() const
Access to the vector x component.
Definition: VectorI.H:73
Foam::Vector::z
const Cmpt & z() const
Access to the vector z component.
Definition: VectorI.H:85
Foam::quadraticFitPolynomial::addCoeffs
static void addCoeffs(scalar *coeffs, const vector &d, const scalar weight, const direction dim)
Definition: quadraticFitPolynomial.H:67
Foam
Namespace for OpenFOAM.
Definition: atmBoundaryLayer.C:33
Foam::Vector::y
const Cmpt & y() const
Access to the vector y component.
Definition: VectorI.H:79
Foam::sqr
dimensionedSymmTensor sqr(const dimensionedVector &dv)
Definition: dimensionedSymmTensor.C:51
Foam::Vector< scalar >
Foam::quadraticFitPolynomial
Quadratic polynomial for centred interpolation fitting.
Definition: quadraticFitPolynomial.H:50
Foam::direction
uint8_t direction
Definition: direction.H:52
vector.H
Foam::quadraticFitPolynomial::nTerms
static label nTerms(const direction dim)
Definition: quadraticFitPolynomial.H:56