pointEdgePointI.H

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     \\/     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.
 
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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
    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
 
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#include "polyMesh.H"
#include "transformer.H"
 
// * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //
 
// Update this with w2 if w2 nearer to pt.
template<class TrackingData>
inline bool Foam::pointEdgePoint::update
(
    const point& pt,
    const pointEdgePoint& w2,
    const scalar tol,
    TrackingData& td
)
{
    scalar dist2 = magSqr(pt - w2.origin());
 
    if (!valid(td))
    {
        // current not yet set so use any value
        distSqr_ = dist2;
        origin_ = w2.origin();
 
        return true;
    }
 
    scalar diff = distSqr_ - dist2;
 
    if (diff < 0)
    {
        // already nearer to pt
        return false;
    }
 
    if ((diff < small) || ((distSqr_ > small) && (diff/distSqr_ < tol)))
    {
        // don't propagate small changes
        return false;
    }
    else
    {
        // update with new values
        distSqr_ = dist2;
        origin_ = w2.origin();
 
        return true;
    }
}
 
 
// Update this with w2 (information on same point)
template<class TrackingData>
inline bool Foam::pointEdgePoint::update
(
    const pointEdgePoint& w2,
    const scalar tol,
    TrackingData& td
)
{
    if (!valid(td))
    {
        // current not yet set so use any value
        distSqr_ = w2.distSqr();
        origin_ = w2.origin();
 
        return true;
    }
 
    scalar diff = distSqr_ - w2.distSqr();
 
    if (diff < 0)
    {
        // already nearer to pt
        return false;
    }
 
    if ((diff < small) || ((distSqr_ > small) && (diff/distSqr_ < tol)))
    {
        // don't propagate small changes
        return false;
    }
    else
    {
        // update with new values
        distSqr_ =  w2.distSqr();
        origin_ = w2.origin();
 
        return true;
    }
}
 
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
inline Foam::pointEdgePoint::pointEdgePoint()
:
    origin_(point::max),
    distSqr_(great)
{}
 
 
inline Foam::pointEdgePoint::pointEdgePoint
(
    const point& origin,
    const scalar distSqr
)
:
    origin_(origin),
    distSqr_(distSqr)
{}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
inline const Foam::point& Foam::pointEdgePoint::origin() const
{
    return origin_;
}
 
 
inline Foam::scalar Foam::pointEdgePoint::distSqr() const
{
    return distSqr_;
}
 
 
template<class TrackingData>
inline bool Foam::pointEdgePoint::valid(TrackingData& td) const
{
    return origin_ != point::max;
}
 
 
// Checks for cyclic points
template<class TrackingData>
inline bool Foam::pointEdgePoint::sameGeometry
(
    const pointEdgePoint& w2,
    const scalar tol,
    TrackingData& td
) const
{
    scalar diff = Foam::mag(distSqr() - w2.distSqr());
 
    if (diff < small)
    {
        return true;
    }
    else
    {
        if ((distSqr() > small) && ((diff/distSqr()) < tol))
        {
            return true;
        }
        else
        {
            return false;
        }
    }
}
 
 
template<class TrackingData>
inline void Foam::pointEdgePoint::transform
(
    const polyPatch& patch,
    const label patchFacei,
    const transformer& transform,
    TrackingData& td
)
{
    // Note that distSqr_ is not affected by crossing an interface
    origin_ = transform.transformPosition(origin_);
}
 
 
// Update this with information from connected edge
template<class TrackingData>
inline bool Foam::pointEdgePoint::updatePoint
(
    const polyMesh& mesh,
    const label pointi,
    const label edgeI,
    const pointEdgePoint& edgeInfo,
    const scalar tol,
    TrackingData& td
)
{
    return update(mesh.points()[pointi], edgeInfo, tol, td);
}
 
 
// Update this with new information on same point
template<class TrackingData>
inline bool Foam::pointEdgePoint::updatePoint
(
    const polyMesh& mesh,
    const label pointi,
    const pointEdgePoint& newPointInfo,
    const scalar tol,
    TrackingData& td
)
{
    return update(mesh.points()[pointi], newPointInfo, tol, td);
}
 
 
// Update this with new information on same point. No extra information.
template<class TrackingData>
inline bool Foam::pointEdgePoint::updatePoint
(
    const pointEdgePoint& newPointInfo,
    const scalar tol,
    TrackingData& td
)
{
    return update(newPointInfo, tol, td);
}
 
 
// Update this with information from connected point
template<class TrackingData>
inline bool Foam::pointEdgePoint::updateEdge
(
    const polyMesh& mesh,
    const label edgeI,
    const label pointi,
    const pointEdgePoint& pointInfo,
    const scalar tol,
    TrackingData& td
)
{
    const edge& e = mesh.edges()[edgeI];
    return update(e.centre(mesh.points()), pointInfo, tol, td);
}
 
 
template<class TrackingData>
inline bool Foam::pointEdgePoint::equal
(
    const pointEdgePoint& rhs,
    TrackingData& td
) const
{
    return operator==(rhs);
}
 
 
// * * * * * * * * * * * * * * * Member Operators  * * * * * * * * * * * * * //
 
inline bool Foam::pointEdgePoint::operator==(const Foam::pointEdgePoint& rhs)
const
{
    return (origin() == rhs.origin()) && (distSqr() == rhs.distSqr());
}
 
 
inline bool Foam::pointEdgePoint::operator!=(const Foam::pointEdgePoint& rhs)
const
{
    return !(*this == rhs);
}
 
 
// * * * * * * * * * * * * * * * Friend Operators  * * * * * * * * * * * * * //
 
inline Foam::Ostream& Foam::operator<<
(
    Foam::Ostream& os,
    const Foam::pointEdgePoint& wDist
)
{
    return os << wDist.origin() << token::SPACE << wDist.distSqr();
}
 
 
inline Foam::Istream& Foam::operator>>
(
    Foam::Istream& is,
    Foam::pointEdgePoint& wDist
)
{
    return is >> wDist.origin_ >> wDist.distSqr_;
}
 
 
// ************************************************************************* //