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BSpline code cleanup

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This commit is contained in:
Mark Olesen
2009-10-26 13:59:50 +01:00
parent 514914207a
commit 79efd0a546
2 changed files with 26 additions and 34 deletions
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49
src/mesh/blockMesh/curvedEdges/BSpline.C
View File

@ -38,75 +38,70 @@ Foam::pointField Foam::BSpline::findKnots
const vector& sndend
)
{
label newnKnots(allknots.size() + 2);
label NKnots(allknots.size());
pointField newknots(newnKnots);
const label NKnots = allknots.size();
// set up 1/6 and 2/3 which are the matrix elements throughout most
// of the matrix
register scalar oneSixth = 1.0/6.0;
register scalar twoThird = 2.0/3.0;
simpleMatrix<vector> M(newnKnots, pTraits<scalar>::zero);
register const scalar oneSixth = 1.0/6.0;
register const scalar twoThird = 2.0/3.0;
simpleMatrix<vector> M(NKnots+2, pTraits<scalar>::zero);
// set up the matrix
M[0][0] = -0.5*scalar(NKnots - 1);
M[0][2] = 0.5*scalar(NKnots - 1);
for (register label i=1; i<newnKnots-1; i++)
for (register label i = 1; i <= NKnots; i++)
{
M[i][i-1] = oneSixth;
M[i][i] = twoThird;
M[i][i+1] = oneSixth;
}
M[newnKnots - 1][newnKnots - 3] = -0.5*scalar(NKnots - 1);
M[newnKnots - 1][newnKnots - 1] = 0.5*scalar(NKnots - 1);
M[NKnots+1][NKnots-1] = -0.5*scalar(NKnots - 1);
M[NKnots+1][NKnots+1] = 0.5*scalar(NKnots - 1);
// set up the vector
for (label i=1; i<=NKnots; i++)
for (register label i = 1; i <= NKnots; i++)
{
M.source()[i] = allknots[i-1];
}
// set the gradients at the two ends
// set the gradients at the two ends
if (mag(fstend)<1e-8)
{
// set to the default : forward differences on the end knots
// default : forward differences on the end knots
M.source()[0] = allknots[1] - allknots[0];
M.source()[0] /= mag(M.source()[0]);
}
else
{
// set to the gradient vector provided
M.source()[0] = fstend/mag(fstend);
}
if (mag(sndend)<1e-8)
{
// default : forward differences on the end knots
M.source()[NKnots+1] = M.source()[NKnots-1] - M.source()[NKnots];
M.source()[NKnots+1] /= mag(M.source()[NKnots+1]);
}
else
{
// set to the gradient vectors provided
M.source()[0] = fstend/mag(fstend);
// set to the gradient vector provided
M.source()[NKnots+1] = sndend/mag(sndend);
}
// invert the equation to find the control knots
newknots = M.solve();
return newknots;
return M.solve();
}
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
Foam::BSpline::BSpline(const pointField& Knots)
:
spline(findKnots(Knots))
{}
Foam::BSpline::BSpline
(
const pointField& Knots,

11
src/mesh/blockMesh/curvedEdges/BSpline.H
View File

@ -56,8 +56,8 @@ class BSpline
pointField findKnots
(
const pointField&,
const vector& fstend = vector::zero,
const vector& sndend = vector::zero
const vector& fstend,
const vector& sndend
);
//- Disallow default bitwise copy construct
@ -71,15 +71,12 @@ public:
// Constructors
//- Construct from components
BSpline(const pointField& knots);
//- Construct from components
BSpline
(
const pointField& knots,
const vector& fstend,
const vector& sndend
const vector& fstend = vector::zero,
const vector& sndend = vector::zero
);