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========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | Website: https://openfoam.org
\\ / A nd | Copyright (C) 2012-2019 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/>.
Class
Foam::pointToPointPlanarInterpolation
Description
Interpolates between two sets of unstructured points using 2D Delaunay
triangulation. Used in e.g. timeVaryingMapped bcs.
SourceFiles
pointToPointPlanarInterpolation.C
\*---------------------------------------------------------------------------*/
#ifndef pointToPointPlanarInterpolation_H
#define pointToPointPlanarInterpolation_H
#include "FixedList.H"
#include "coordinateSystem.H"
#include "instantList.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
/*---------------------------------------------------------------------------*\
Class pointToPointPlanarInterpolation Declaration
\*---------------------------------------------------------------------------*/
class pointToPointPlanarInterpolation
{
// Private Data
//- Perturbation factor
const scalar perturb_;
//- Whether to use nearest point only (avoids triangulation, projection)
const bool nearestOnly_;
//- Coordinate system
coordinateSystem referenceCS_;
//- Number of source points (for checking)
label nPoints_;
//- Current interpolation addressing to face centres of underlying
// patch
List<FixedList<label, 3>> nearestVertex_;
//- Current interpolation factors to face centres of underlying
// patch
List<FixedList<scalar, 3>> nearestVertexWeight_;
// Private Member Functions
//- Calculate a local coordinate system from set of points
coordinateSystem calcCoordinateSystem(const pointField&) const;
//- Calculate addressing and weights
void calcWeights
(
const pointField& sourcePoints,
const pointField& destPoints
);
public:
// Declare name of the class and its debug switch
ClassName("pointToPointPlanarInterpolation");
// Constructors
//- Construct from 3D locations. Determines local coordinate system
// from sourcePoints and maps onto that. If nearestOnly skips any
// local coordinate system and triangulation and uses nearest vertex
// only
pointToPointPlanarInterpolation
(
const pointField& sourcePoints,
const pointField& destPoints,
const scalar perturb,
const bool nearestOnly = false
);
//- Construct from coordinate system and locations.
pointToPointPlanarInterpolation
(
const coordinateSystem& referenceCS,
const pointField& sourcePoints,
const pointField& destPoints,
const scalar perturb
);
// Member Functions
//- Return the coordinateSystem
const coordinateSystem& referenceCS() const
{
return referenceCS_;
}
//- Number of source points
label sourceSize() const
{
return nPoints_;
}
// patch
const List<FixedList<label, 3>>& nearestVertex() const
{
return nearestVertex_;
}
//- Current interpolation factors to face centres of underlying
// patch
const List<FixedList<scalar, 3>>& nearestVertexWeight() const
{
return nearestVertexWeight_;
}
//- Helper: extract words of times
static wordList timeNames(const instantList&);
//- Helper: find time. Return true if successful.
static bool findTime
(
const instantList& times,
const label startSampleTime,
const scalar timeVal,
label& lo,
label& hi
);
//- Interpolate from field on source points to dest points
template<class Type>
tmp<Field<Type>> interpolate(const Field<Type>& sourceFld) const;
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#ifdef NoRepository
#include "pointToPointPlanarInterpolationTemplates.C"
#endif
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************************************************************* //
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