rigidBodyModelI.H

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    Copyright (C) 2019 OpenCFD Ltd.
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// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //

inline const Foam::Time& Foam::RBD::rigidBodyModel::time() const
{
    return time_;
}


inline Foam::label Foam::RBD::rigidBodyModel::nBodies() const
{
    return bodies_.size();
}


inline Foam::PtrList<Foam::RBD::rigidBody>
Foam::RBD::rigidBodyModel::bodies() const
{
    return bodies_;
}


inline const Foam::DynamicList<Foam::label>&
Foam::RBD::rigidBodyModel::lambda() const
{
    return lambda_;
}


inline const Foam::PtrList<Foam::RBD::joint>&
Foam::RBD::rigidBodyModel::joints() const
{
    return joints_;
}


inline Foam::label Foam::RBD::rigidBodyModel::nDoF() const
{
    return nDoF_;
}


inline bool Foam::RBD::rigidBodyModel::unitQuaternions() const
{
    return unitQuaternions_;
}


inline const Foam::vector& Foam::RBD::rigidBodyModel::g() const
{
    return g_;
}


inline Foam::vector& Foam::RBD::rigidBodyModel::g()
{
    return g_;
}


inline const Foam::word& Foam::RBD::rigidBodyModel::name
(
    const label bodyID
) const
{
    if (merged(bodyID))
    {
        return mergedBody(bodyID).name();
    }
    else
    {
        return bodies_[bodyID].name();
    }
}


inline const Foam::RBD::rigidBodyInertia&
Foam::RBD::rigidBodyModel::I(const label i) const
{
    return bodies_[i];
}


inline const Foam::spatialVector&
Foam::RBD::rigidBodyModel::v(const label i) const
{
    return v_[i];
}

inline const Foam::spatialVector&
Foam::RBD::rigidBodyModel::a(const label i) const
{
    return a_[i];
}

inline bool Foam::RBD::rigidBodyModel::merged(label bodyID) const
{
    return bodyID < 0;
}


inline Foam::label Foam::RBD::rigidBodyModel::master(label bodyID) const
{
    if (bodyID < 0)
    {
        return mergedBody(bodyID).masterID();
    }
    else
    {
        return bodyID;
    }
}


inline Foam::label
Foam::RBD::rigidBodyModel::mergedBodyID(const label mergedBodyIndex) const
{
    return -1 - mergedBodyIndex;
}


inline Foam::label
Foam::RBD::rigidBodyModel::mergedBodyIndex(const label mergedBodyID) const
{
    return -1 - mergedBodyID;
}


inline const Foam::RBD::subBody&
Foam::RBD::rigidBodyModel::mergedBody(label mergedBodyID) const
{
    if (!merged(mergedBodyID))
    {
        FatalErrorInFunction
            << "Body " << mergedBodyID << " has not been merged"
            << abort(FatalError);
    }

    return mergedBodies_[mergedBodyIndex(mergedBodyID)];
}


inline Foam::label Foam::RBD::rigidBodyModel::bodyID(const word& name) const
{
    return bodyIDs_[name];
}


inline Foam::vector Foam::RBD::rigidBodyModel::masterPoint
(
    const label bodyID,
    const vector& p
) const
{
    if (merged(bodyID))
    {
        return
        (
            mergedBody(bodyID).masterXT().inv()
         && spatialVector(Zero, p)
        ).l();
    }
    else
    {
        return p;
    }
}


inline Foam::spatialVector Foam::RBD::rigidBodyModel::v
(
    const label bodyID,
    const vector& p
) const
{
    return
    (
        spatialTransform
        (
            X0_[master(bodyID)].E().T(),
            masterPoint(bodyID, p)
        )
      & v_[master(bodyID)]
    );
}


// ************************************************************************* //