sixDoFRigidBodyMotionLineConstraint.C

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/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
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    \\  /    A nd           | www.openfoam.com
     \\/     M anipulation  |
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    Copyright (C) 2011-2015 OpenFOAM Foundation
-------------------------------------------------------------------------------
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.
 
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    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
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#include "sixDoFRigidBodyMotionLineConstraint.H"
#include "addToRunTimeSelectionTable.H"
#include "sixDoFRigidBodyMotion.H"
 
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
namespace Foam
{
namespace sixDoFRigidBodyMotionConstraints
{
    defineTypeNameAndDebug(line, 0);
 
    addToRunTimeSelectionTable
    (
        sixDoFRigidBodyMotionConstraint,
        line,
        dictionary
    );
}
}
 
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
Foam::sixDoFRigidBodyMotionConstraints::line::line
(
    const word& name,
    const dictionary& sDoFRBMCDict,
    const sixDoFRigidBodyMotion& motion
)
:
    sixDoFRigidBodyMotionConstraint(name, sDoFRBMCDict, motion)
{
    read(sDoFRBMCDict);
}
 
 
// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
 
Foam::sixDoFRigidBodyMotionConstraints::line::~line()
{}
 
 
// * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * * //
 
void Foam::sixDoFRigidBodyMotionConstraints::line::setCentreOfRotation
(
    point& CofR
) const
{
    CofR = centreOfRotation_;
}
 
 
void Foam::sixDoFRigidBodyMotionConstraints::line::constrainTranslation
(
    pointConstraint& pc
) const
{
    pc.combine(pointConstraint(Tuple2<label, vector>(2, direction_)));
}
 
 
void Foam::sixDoFRigidBodyMotionConstraints::line::constrainRotation
(
    pointConstraint& pc
) const
{}
 
 
bool Foam::sixDoFRigidBodyMotionConstraints::line::read
(
    const dictionary& sDoFRBMCDict
)
{
    sixDoFRigidBodyMotionConstraint::read(sDoFRBMCDict);
 
    centreOfRotation_ = sDoFRBMCCoeffs_.lookupOrDefault
    (
        "centreOfRotation",
        motion_.initialCentreOfMass()
    );
 
    sDoFRBMCCoeffs_.readEntry("direction", direction_);
 
    scalar magDir(mag(direction_));
 
    if (magDir > VSMALL)
    {
        direction_ /= magDir;
    }
    else
    {
        FatalErrorInFunction
            << "line direction has zero length"
            << abort(FatalError);
    }
 
    return true;
}
 
 
void Foam::sixDoFRigidBodyMotionConstraints::line::write
(
    Ostream& os
) const
{
    os.writeEntry("centreOfRotation", centreOfRotation_);
    os.writeEntry("direction", direction_);
}
 
// ************************************************************************* //