150 lines
4 KiB
C
150 lines
4 KiB
C
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/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | Copyright held by original author
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2 of the License, or (at your
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option) any later version.
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OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with OpenFOAM; if not, write to the Free Software Foundation,
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Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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\*---------------------------------------------------------------------------*/
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#include "polySplineEdge.H"
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#include "BSpline.H"
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// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
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namespace Foam
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{
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defineTypeNameAndDebug(polySplineEdge, 0);
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// Add the curvedEdge constructor functions to the hash tables
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curvedEdge::addIstreamConstructorToTable<polySplineEdge>
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addPolySplineEdgeIstreamConstructorToTable_;
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}
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// * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * //
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// intervening : returns a list of the points making up the polyLineEdge
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// which describes the spline. nbetweenKnots is the number of points
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// placed between each knot : this ensures that the knot locations
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// are retained as a subset of the polyLine points.
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// note that the points are evenly spaced in the parameter mu, not
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// in real space
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Foam::pointField Foam::polySplineEdge::intervening
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(
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const pointField& otherknots,
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const label nbetweenKnots,
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const vector& fstend,
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const vector& sndend
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)
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{
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BSpline spl(knotlist(points_, start_, end_, otherknots), fstend, sndend);
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label nSize(nsize(otherknots.size(), nbetweenKnots));
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pointField ans(nSize);
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label N = spl.nKnots();
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scalar init = 1.0/(N - 1);
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scalar interval = (N - scalar(3))/N;
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interval /= otherknots.size() + 1;
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interval /= nbetweenKnots + 1;
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ans[0] = points_[start_];
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register scalar index(init);
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for (register label i=1; i<nSize-1; i++)
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{
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index += interval;
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ans[i] = spl.realPosition(index);
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}
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ans[nSize-1] = points_[end_];
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return ans;
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}
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// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
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Foam::polySplineEdge::polySplineEdge
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(
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const pointField& points,
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const label start,
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const label end,
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const pointField& otherknots,
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const label nInterKnots
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)
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:
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curvedEdge(points, start, end),
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polyLine
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(
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intervening
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(
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otherknots,
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nInterKnots,
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vector::zero,
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vector::zero
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)
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),
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otherKnots_(otherknots)
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{}
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Foam::polySplineEdge::polySplineEdge
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(
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const pointField& points,
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Istream& is
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)
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:
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curvedEdge(points, is),
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polyLine(pointField(0)),
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otherKnots_(is)
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{
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label nInterKnots(20);
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vector fstend(is);
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vector sndend(is);
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controlPoints_.setSize(nsize(otherKnots_.size(), nInterKnots));
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distances_.setSize(controlPoints_.size());
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controlPoints_ = intervening(otherKnots_, nInterKnots, fstend, sndend);
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calcDistances();
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}
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// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
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Foam::vector Foam::polySplineEdge::position(const scalar mu) const
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{
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return polyLine::position(mu);
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}
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Foam::scalar Foam::polySplineEdge::length() const
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{
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return polyLine::length();
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}
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// ************************************************************************* //
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