bezier.C

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/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | Copyright (C) 2015 OpenCFD Ltd.
     \\/     M anipulation  |
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.
 
    OpenFOAM is free software: you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.
 
    You should have received a copy of the GNU General Public License
    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
 
\*---------------------------------------------------------------------------*/
 
#include "bezier.H"
#include "SubList.H"
#include "addToRunTimeSelectionTable.H"
 
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
namespace Foam
{
    defineTypeNameAndDebug(bezier, 0);
    addToRunTimeSelectionTable(curvedEdge, bezier, Istream);
}
 
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
Foam::bezier::bezier
(
    const pointField& ps,
    const label start,
    const label end,
    const pointField& control
)
:
    curvedEdge(ps, start, end),
    control_(control)
{}
 
 
Foam::bezier::bezier(const pointField& ps, Istream& is)
:
    curvedEdge(ps, is),
    control_(appendEndPoints(ps, start_, end_, pointField(is)))
{}
 
 
// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
 
Foam::bezier::~bezier()
{}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
Foam::point Foam::bezier::position(const scalar lambda) const
{
    pointField working(control_);
 
    label nWorking(working.size());
 
    forAll(working, workingI)
    {
        -- nWorking;
 
        SubList<point>(working, nWorking).assign
        (
            (1 - lambda)*SubList<point>(working, nWorking)
          + lambda*SubList<point>(working, nWorking, 1)
        );
    }
 
    return working[0];
}
 
 
Foam::scalar Foam::bezier::length() const
{
    NotImplemented;
    return 1.0;
}
 
 
// ************************************************************************* //