Files
OpenFOAM-12/src/rigidBodyDynamics/rigidBodyModelState/rigidBodyModelStateIO.C
Henry Weller df1cb90dc6 rigidBodyDynamics: Simplify handling of quaternions by maintaining a unit quaternion in the joint state field 'q'
'w' is now obtained from 'v' using the relation w = sqrt(1 - |sqr(v)|)
and 'v' is stored in the joint state field 'q' and integrated in the
usual manner but corrected using quaternion transformations.
2016-04-12 21:44:34 +01:00

92 lines
2.6 KiB
C

/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2016 OpenFOAM Foundation
\\/ 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 "rigidBodyModelState.H"
#include "IOstreams.H"
// * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * * //
void Foam::RBD::rigidBodyModelState::write(dictionary& dict) const
{
dict.add("q", q_);
dict.add("qDot", qDot_);
dict.add("qDdot", qDdot_);
}
void Foam::RBD::rigidBodyModelState::write(Ostream& os) const
{
os.writeKeyword("q") << q_ << token::END_STATEMENT << nl;
os.writeKeyword("qDot") << qDot_ << token::END_STATEMENT << nl;
os.writeKeyword("qDdot") << qDdot_ << token::END_STATEMENT << nl;
}
// * * * * * * * * * * * * * * * IOstream Operators * * * * * * * * * * * * //
Foam::Istream& Foam::RBD::operator>>
(
Istream& is,
rigidBodyModelState& state
)
{
is >> state.q_
>> state.qDot_
>> state.qDdot_;
// Check state of Istream
is.check
(
"Foam::Istream& Foam::operator>>"
"(Foam::Istream&, Foam::RBD::rigidBodyModelState&)"
);
return is;
}
Foam::Ostream& Foam::RBD::operator<<
(
Ostream& os,
const rigidBodyModelState& state
)
{
os << token::SPACE << state.q_
<< token::SPACE << state.qDot_
<< token::SPACE << state.qDdot_;
// Check state of Ostream
os.check
(
"Foam::Ostream& Foam::operator<<(Foam::Ostream&, "
"const Foam::RBD::rigidBodyModelState&)"
);
return os;
}
// ************************************************************************* //