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/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2011-2015 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 "sampledSet.H"
#include "polyMesh.H"
#include "primitiveMesh.H"
#include "meshSearch.H"
#include "writer.H"
#include "particle.H"
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
namespace Foam
{
const scalar sampledSet::tol = 1e-6;
defineTypeNameAndDebug(sampledSet, 0);
defineRunTimeSelectionTable(sampledSet, word);
}
// * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * //
Foam::label Foam::sampledSet::getBoundaryCell(const label faceI) const
{
return mesh().faceOwner()[faceI];
}
Foam::label Foam::sampledSet::getCell
(
const label faceI,
const point& sample
) const
{
if (faceI == -1)
{
FatalErrorInFunction
<< "Illegal face label " << faceI
<< abort(FatalError);
}
if (faceI >= mesh().nInternalFaces())
{
label cellI = getBoundaryCell(faceI);
if (!mesh().pointInCell(sample, cellI, searchEngine_.decompMode()))
FatalErrorInFunction
<< "Found cell " << cellI << " using face " << faceI
<< ". But cell does not contain point " << sample
<< abort(FatalError);
}
return cellI;
}
else
{
// Try owner and neighbour to see which one contains sample
label cellI = mesh().faceOwner()[faceI];
if (mesh().pointInCell(sample, cellI, searchEngine_.decompMode()))
{
return cellI;
}
else
{
cellI = mesh().faceNeighbour()[faceI];
if (mesh().pointInCell(sample, cellI, searchEngine_.decompMode()))
{
return cellI;
}
else
{
FatalErrorInFunction
<< "None of the neighbours of face "
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<< faceI << " contains point " << sample
<< abort(FatalError);
return -1;
}
}
}
}
Foam::scalar Foam::sampledSet::calcSign
(
const label faceI,
const point& sample
) const
{
vector vec = sample - mesh().faceCentres()[faceI];
scalar magVec = mag(vec);
if (magVec < VSMALL)
{
// sample on face centre. Regard as inside
return -1;
}
vec /= magVec;
vector n = mesh().faceAreas()[faceI];
n /= mag(n) + VSMALL;
return n & vec;
}
// Return face (or -1) of face which is within smallDist of sample
Foam::label Foam::sampledSet::findNearFace
(
const label cellI,
const point& sample,
const scalar smallDist
) const
{
const cell& myFaces = mesh().cells()[cellI];
forAll(myFaces, myFaceI)
{
const face& f = mesh().faces()[myFaces[myFaceI]];
pointHit inter = f.nearestPoint(sample, mesh().points());
scalar dist;
if (inter.hit())
{
dist = mag(inter.hitPoint() - sample);
}
else
{
dist = mag(inter.missPoint() - sample);
}
if (dist < smallDist)
{
return myFaces[myFaceI];
}
}
return -1;
}
// 'Pushes' point facePt (which is almost on face) in direction of cell centre
// so it is clearly inside.
Foam::point Foam::sampledSet::pushIn
(
const point& facePt,
const label faceI
) const
{
label cellI = mesh().faceOwner()[faceI];
const point& cC = mesh().cellCentres()[cellI];
point newPosition = facePt;
// Taken from particle::initCellFacePt()
label tetFaceI;
label tetPtI;
mesh().findTetFacePt(cellI, facePt, tetFaceI, tetPtI);
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if (tetFaceI == -1 || tetPtI == -1)
{
newPosition = facePt;
label trap(1.0/particle::trackingCorrectionTol + 1);
label iterNo = 0;
do
{
newPosition += particle::trackingCorrectionTol*(cC - facePt);
mesh().findTetFacePt
(
cellI,
newPosition,
tetFaceI,
tetPtI
);
iterNo++;
} while (tetFaceI < 0 && iterNo <= trap);
}
if (tetFaceI == -1)
FatalErrorInFunction
<< "After pushing " << facePt << " to " << newPosition
<< " it is still outside face " << faceI
<< " at " << mesh().faceCentres()[faceI]
<< " of cell " << cellI
<< " at " << cC << endl
<< "Please change your starting point"
<< abort(FatalError);
}
//Info<< "pushIn : moved " << facePt << " to " << newPosition
// << endl;
return newPosition;
}
// Calculates start of tracking given samplePt and first boundary intersection
// (bPoint, bFaceI). bFaceI == -1 if no boundary intersection.
// Returns true if trackPt is sampling point
bool Foam::sampledSet::getTrackingPoint
(
const vector& offset,
const point& samplePt,
const point& bPoint,
const label bFaceI,
point& trackPt,
label& trackCellI,
label& trackFaceI
) const
{
const scalar smallDist = mag(tol*offset);
bool isGoodSample = false;
if (bFaceI == -1)
{
// No boundary intersection. Try and find cell samplePt is in
trackCellI = mesh().findCell(samplePt, searchEngine_.decompMode());
if
(
(trackCellI == -1)
|| !mesh().pointInCell
(
samplePt,
trackCellI,
searchEngine_.decompMode()
)
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)
{
// Line samplePt - end_ does not intersect domain at all.
// (or is along edge)
//Info<< "getTrackingPoint : samplePt outside domain : "
// << " samplePt:" << samplePt
// << endl;
trackCellI = -1;
trackFaceI = -1;
isGoodSample = false;
}
else
{
// start is inside. Use it as tracking point
//Info<< "getTrackingPoint : samplePt inside :"
// << " samplePt:" << samplePt
// << " trackCellI:" << trackCellI
// << endl;
trackPt = samplePt;
trackFaceI = -1;
isGoodSample = true;
}
}
else if (mag(samplePt - bPoint) < smallDist)
{
//Info<< "getTrackingPoint : samplePt:" << samplePt
// << " close to bPoint:"
// << bPoint << endl;
// samplePt close to bPoint. Snap to it
trackPt = pushIn(bPoint, bFaceI);
trackFaceI = bFaceI;
trackCellI = getBoundaryCell(trackFaceI);
isGoodSample = true;
}
else
{
scalar sign = calcSign(bFaceI, samplePt);
if (sign < 0)
{
// samplePt inside or marginally outside.
trackPt = samplePt;
trackFaceI = -1;
trackCellI = mesh().findCell(trackPt, searchEngine_.decompMode());
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isGoodSample = true;
}
else
{
// samplePt outside. use bPoint
trackPt = pushIn(bPoint, bFaceI);
trackFaceI = bFaceI;
trackCellI = getBoundaryCell(trackFaceI);
isGoodSample = false;
}
}
if (debug)
{
Info<< "sampledSet::getTrackingPoint :"
<< " offset:" << offset
<< " samplePt:" << samplePt
<< " bPoint:" << bPoint
<< " bFaceI:" << bFaceI
<< endl << " Calculated first tracking point :"
<< " trackPt:" << trackPt
<< " trackCellI:" << trackCellI
<< " trackFaceI:" << trackFaceI
<< " isGoodSample:" << isGoodSample
<< endl;
}
return isGoodSample;
}
void Foam::sampledSet::setSamples
(
const List<point>& samplingPts,
const labelList& samplingCells,
const labelList& samplingFaces,
const labelList& samplingSegments,
const scalarList& samplingCurveDist
)
{
setSize(samplingPts.size());
cells_.setSize(samplingCells.size());
faces_.setSize(samplingFaces.size());
segments_.setSize(samplingSegments.size());
curveDist_.setSize(samplingCurveDist.size());
if
(
(cells_.size() != size())
|| (faces_.size() != size())
|| (segments_.size() != size())
|| (curveDist_.size() != size())
)
{
<< "sizes not equal : "
<< " points:" << size()
<< " cells:" << cells_.size()
<< " faces:" << faces_.size()
<< " segments:" << segments_.size()
<< " curveDist:" << curveDist_.size()
<< abort(FatalError);
}
forAll(samplingPts, sampleI)
{
operator[](sampleI) = samplingPts[sampleI];
}
curveDist_ = samplingCurveDist;
cells_ = samplingCells;
faces_ = samplingFaces;
segments_ = samplingSegments;
}
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
Foam::sampledSet::sampledSet
(
const word& name,
const polyMesh& mesh,
const meshSearch& searchEngine,
const word& axis
)
:
coordSet(name, axis),
mesh_(mesh),
searchEngine_(searchEngine),
segments_(0),
cells_(0),
faces_(0)
{}
Foam::sampledSet::sampledSet
(
const word& name,
const polyMesh& mesh,
const meshSearch& searchEngine,
const dictionary& dict
)
:
coordSet(name, dict.lookup("axis")),
mesh_(mesh),
searchEngine_(searchEngine),
segments_(0),
cells_(0),
faces_(0)
{}
// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
Foam::sampledSet::~sampledSet()
{}
// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
Foam::autoPtr<Foam::sampledSet> Foam::sampledSet::New
(
const word& name,
const polyMesh& mesh,
const meshSearch& searchEngine,
const dictionary& dict
)
{
const word sampleType(dict.lookup("type"));
wordConstructorTable::iterator cstrIter =
wordConstructorTablePtr_->find(sampleType);
if (cstrIter == wordConstructorTablePtr_->end())
{
FatalErrorInFunction
<< "Unknown sample type "
Mark Olesen
committed
<< sampleType << nl << nl
<< "Valid sample types : " << endl
<< wordConstructorTablePtr_->sortedToc()
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<< exit(FatalError);
}
return autoPtr<sampledSet>
(
cstrIter()
(
name,
mesh,
searchEngine,
dict
)
);
}
Foam::Ostream& Foam::sampledSet::write(Ostream& os) const
{
coordSet::write(os);
os << endl << "\t(cellI)\t(faceI)" << endl;
forAll(*this, sampleI)
{
os << '\t' << cells_[sampleI]
<< '\t' << faces_[sampleI]
<< endl;
}
return os;
}
// ************************************************************************* //