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========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | Website: https://openfoam.org
\\ / A nd | Copyright (C) 2011-2024 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 "cellMapper.H"
#include "polyMesh.H"
#include "polyTopoChangeMap.H"
// * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * //
void Foam::cellMapper::calcAddressing() const
{
if
(
directAddrPtr_
|| interpolationAddrPtr_
|| weightsPtr_
|| insertedCellLabelsPtr_
)
{
FatalErrorInFunction
<< "Addressing already calculated."
<< abort(FatalError);
}
if (direct())
{
// Direct addressing, no weights
directAddrPtr_ = new labelList(mpm_.cellMap());
labelList& directAddr = *directAddrPtr_;
// Not necessary to resize the list as there are no retired cells
// directAddr.setSize(mesh_.nCells());
insertedCellLabelsPtr_ = new labelList(mesh_.nCells());
labelList& insertedCells = *insertedCellLabelsPtr_;
label nInsertedCells = 0;
forAll(directAddr, celli)
{
if (directAddr[celli] < 0)
{
// Found inserted cell
directAddr[celli] = 0;
insertedCells[nInsertedCells] = celli;
nInsertedCells++;
}
}
insertedCells.setSize(nInsertedCells);
}
else
{
// Interpolative addressing
interpolationAddrPtr_ = new labelListList(mesh_.nCells());
labelListList& addr = *interpolationAddrPtr_;
weightsPtr_ = new scalarListList(mesh_.nCells());
scalarListList& w = *weightsPtr_;
// Volume conservative mapping if possible
const List<objectMap>& cfc = mpm_.cellsFromCellsMap();
forAll(cfc, cfcI)
{
// Get addressing
const labelList& mo = cfc[cfcI].masterObjects();
label celli = cfc[cfcI].index();
if (addr[celli].size())
{
FatalErrorInFunction
<< "Master cell " << celli
<< " mapped from cell cells " << mo
<< " already destination of mapping."
<< abort(FatalError);
}
// Map from masters
addr[celli] = mo;
}
if (mpm_.hasOldCellVolumes())
{
// Volume weighted
const scalarField& V = mpm_.oldCellVolumes();
if (V.size() != sizeBeforeMapping())
{
FatalErrorInFunction
<< "cellVolumes size " << V.size()
<< " is not the old number of cells " << sizeBeforeMapping()
<< ". Are your cellVolumes already mapped?"
<< " (new number of cells " << mpm_.cellMap().size() << ")"
<< abort(FatalError);
}
forAll(cfc, cfcI)
{
const labelList& mo = cfc[cfcI].masterObjects();
label celli = cfc[cfcI].index();
w[celli].setSize(mo.size());
if (mo.size())
{
scalar sumV = 0;
forAll(mo, ci)
{
w[celli][ci] = V[mo[ci]];
sumV += V[mo[ci]];
}
if (sumV > vSmall)
{
forAll(mo, ci)
{
w[celli][ci] /= sumV;
}
}
else
{
// Exception: zero volume. Use uniform mapping
w[celli] = scalarList(mo.size(), 1.0/mo.size());
}
}
}
}
else
{
// Uniform weighted
forAll(cfc, cfcI)
{
const labelList& mo = cfc[cfcI].masterObjects();
label celli = cfc[cfcI].index();
w[celli] = scalarList(mo.size(), 1.0/mo.size());
}
}
// Do mapped faces. Note that can already be set from cellsFromCells
// so check if addressing size still zero.
const labelList& cm = mpm_.cellMap();
forAll(cm, celli)
{
if (cm[celli] > -1 && addr[celli].empty())
{
// Mapped from a single cell
addr[celli] = labelList(1, cm[celli]);
w[celli] = scalarList(1, 1.0);
}
}
// Grab inserted points (for them the size of addressing is still zero)
insertedCellLabelsPtr_ = new labelList(mesh_.nCells());
labelList& insertedCells = *insertedCellLabelsPtr_;
label nInsertedCells = 0;
forAll(addr, celli)
{
if (addr[celli].empty())
{
FatalErrorInFunction
<< "No interpolative addressing provided for cell " << celli
<< abort(FatalError);
}
}
insertedCells.setSize(nInsertedCells);
}
}
void Foam::cellMapper::clearOut()
{
deleteDemandDrivenData(directAddrPtr_);
deleteDemandDrivenData(interpolationAddrPtr_);
deleteDemandDrivenData(weightsPtr_);
deleteDemandDrivenData(insertedCellLabelsPtr_);
}
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
Foam::cellMapper::cellMapper(const polyTopoChangeMap& mpm)
:
mesh_(mpm.mesh()),
mpm_(mpm),
insertedCells_(true),
direct_(false),
directAddrPtr_(nullptr),
interpolationAddrPtr_(nullptr),
weightsPtr_(nullptr),
insertedCellLabelsPtr_(nullptr)
{
// Check for possibility of direct mapping
if (mpm_.cellsFromCellsMap().empty())
{
direct_ = true;
}
else
{
direct_ = false;
}
// Check for inserted cells
if (direct_ && (mpm_.cellMap().empty() || min(mpm_.cellMap()) > -1))
{
insertedCells_ = false;
}
else
{
// Need to check all 3 lists to see if there are inserted cells
// with no owner
// Make a copy of the cell map, add the entried for cells from points,
// cells from edges and cells from faces and check for left-overs
labelList cm(mesh_.nCells(), -1);
const List<objectMap>& cfc = mpm_.cellsFromCellsMap();
forAll(cfc, cfcI)
{
cm[cfc[cfcI].index()] = 0;
}
if (min(cm) < 0)
{
insertedCells_ = true;
}
}
}
// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
Foam::cellMapper::~cellMapper()
{
clearOut();
}
// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
const Foam::labelUList& Foam::cellMapper::directAddressing() const
{
if (!direct())
{
FatalErrorInFunction
<< "Requested direct addressing for an interpolative mapper."
<< abort(FatalError);
}
if (!insertedObjects())
{
// No inserted cells. Reuse cellMap
return mpm_.cellMap();
}
else
{
if (!directAddrPtr_)
{
calcAddressing();
}
return *directAddrPtr_;
}
}
const Foam::labelListList& Foam::cellMapper::addressing() const
{
if (direct())
{
FatalErrorInFunction
<< "Requested interpolative addressing for a direct mapper."
<< abort(FatalError);
}
if (!interpolationAddrPtr_)
{
calcAddressing();
}
return *interpolationAddrPtr_;
}
const Foam::scalarListList& Foam::cellMapper::weights() const
{
if (direct())
{
FatalErrorInFunction
<< "Requested interpolative weights for a direct mapper."
<< abort(FatalError);
}
if (!weightsPtr_)
{
calcAddressing();
}
return *weightsPtr_;
}
Foam::label Foam::cellMapper::sizeBeforeMapping() const
{
return mpm_.nOldCells();
}
const Foam::labelList& Foam::cellMapper::insertedObjectLabels() const
{
if (!insertedCellLabelsPtr_)
{
if (!insertedObjects())
{
// There are no inserted cells
insertedCellLabelsPtr_ = new labelList(0);
}
else
{
calcAddressing();
}
}
return *insertedCellLabelsPtr_;
}
// ************************************************************************* //
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