bezier.C

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    Copyright (C) 2015-2021 OpenCFD Ltd.
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License
    This file is part of OpenFOAM.
 
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#include "bezier.H"
#include "polyLine.H"
#include "SubList.H"
#include "addToRunTimeSelectionTable.H"
 
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
namespace Foam
{
namespace blockEdges
{
    defineTypeNameAndDebug(bezier, 0);
    addToRunTimeSelectionTable(blockEdge, bezier, Istream);
}
}
 
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
Foam::blockEdges::bezier::bezier
(
    const pointField& points,
    const edge& fromTo,
    const pointField& control
)
:
    blockEdge(points, fromTo),
    control_(control)
{}
 
 
Foam::blockEdges::bezier::bezier
(
    const pointField& points,
    const label from,
    const label to,
    const pointField& control
)
:
    bezier(points, edge(from, to), control)
{}
 
 
Foam::blockEdges::bezier::bezier
(
    const dictionary& dict,
    const label index,
    const searchableSurfaces&,
    const pointField& points,
    Istream& is
)
:
    blockEdge(dict, index, points, is),
    control_
    (
        polyLine::concat(firstPoint(), pointField(is), lastPoint())
    )
{}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
Foam::point Foam::blockEdges::bezier::position(const scalar lambda) const
{
    pointField working(control_);
 
    label nWorking(working.size());
 
    forAll(working, workingI)
    {
        --nWorking;
 
        SubList<point>(working, nWorking) =
            (1 - lambda)*SubList<point>(working, nWorking)
          + lambda*SubList<point>(working, nWorking, 1);
    }
 
    return working[0];
}
 
 
Foam::scalar Foam::blockEdges::bezier::length() const
{
    NotImplemented;
    return 1;
}
 
 
// ************************************************************************* //