/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | Copyright (C) 1991-2007 OpenCFD Ltd.
     \\/     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 2 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, write to the Free Software Foundation,
    Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

\*---------------------------------------------------------------------------*/

#include "sampledPatch.H"
#include "dictionary.H"
#include "polyMesh.H"
#include "polyPatch.H"
#include "volFields.H"

#include "addToRunTimeSelectionTable.H"

// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //

namespace Foam
{
    defineTypeNameAndDebug(sampledPatch, 0);
    addNamedToRunTimeSelectionTable(sampledSurface, sampledPatch, word, patch);
}

// * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //

void Foam::sampledPatch::createGeometry()
{
    clearGeom();
    points_.clear();
    faces_.clear();
    patchFaceLabels_.clear();

    if (patchIndex() != -1)
    {
        const polyPatch& patch = mesh().boundaryMesh()[patchIndex()];
        const faceList& localFaces = patch.localFaces();

        points_ = patch.localPoints();

        if (triangulate())
        {
            // Count triangles
            label nTri = 0;
            forAll(localFaces, faceI)
            {
                const face& f = localFaces[faceI];

                nTri += f.nTriangles(patch.localPoints());
            }

            faces_.setSize(nTri);
            patchFaceLabels_.setSize(nTri);

            // split and fill mesh face references
            nTri = 0;
            forAll(localFaces, faceI)
            {
                const face& f = localFaces[faceI];

                label fillIndex = nTri;

                f.triangles(patch.localPoints(), nTri, faces_);
                while (fillIndex < nTri)
                {
                    patchFaceLabels_[fillIndex++] = faceI;
                }
            }
        }
        else
        {
            faces_  = localFaces;
            patchFaceLabels_.setSize(faces_.size());
            forAll(localFaces, i)
            {
                patchFaceLabels_[i] = i;
            }
        }
    }

    if (debug)
    {
        print(Pout);
        Pout << endl;
    }
}


// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //

Foam::sampledPatch::sampledPatch
(
    const word& name,
    const polyMesh& mesh,
    const word& patchName,
    const bool triangulate
)
:
    sampledSurface(name, mesh, triangulate),
    patchName_(patchName),
    patchIndex_(mesh.boundaryMesh().findPatchID(patchName_)),
    points_(0),
    faces_(0),
    patchFaceLabels_(0)
{
    createGeometry();
}


Foam::sampledPatch::sampledPatch
(
    const word& name,
    const polyMesh& mesh,
    const dictionary& dict
)
:
    sampledSurface(name, mesh, dict),
    patchName_(dict.lookup("patchName")),
    patchIndex_(mesh.boundaryMesh().findPatchID(patchName_)),
    points_(0),
    faces_(0),
    patchFaceLabels_(0)
{
    // default: non-triangulated
    triangulate() = getBool(dict, "triangulate", false);
    createGeometry();
}


// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //

Foam::sampledPatch::~sampledPatch()
{}


// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //

void Foam::sampledPatch::correct(const bool meshChanged)
{
    if (meshChanged)
    {
        createGeometry();
    }
}


Foam::tmp<Foam::scalarField>
Foam::sampledPatch::sample
(
    const volScalarField& vField
) const
{
    return sampleField(vField);
}


Foam::tmp<Foam::vectorField>
Foam::sampledPatch::sample
(
    const volVectorField& vField
) const
{
    return sampleField(vField);
}

Foam::tmp<Foam::sphericalTensorField>
Foam::sampledPatch::sample
(
    const volSphericalTensorField& vField
) const
{
    return sampleField(vField);
}


Foam::tmp<Foam::symmTensorField>
Foam::sampledPatch::sample
(
    const volSymmTensorField& vField
) const
{
    return sampleField(vField);
}


Foam::tmp<Foam::tensorField>
Foam::sampledPatch::sample
(
    const volTensorField& vField
) const
{
    return sampleField(vField);
}


Foam::tmp<Foam::scalarField>
Foam::sampledPatch::interpolate
(
    const interpolation<scalar>& interpolator
) const
{
    return interpolateField(interpolator);
}


Foam::tmp<Foam::vectorField>
Foam::sampledPatch::interpolate
(
    const interpolation<vector>& interpolator
) const
{
    return interpolateField(interpolator);
}

Foam::tmp<Foam::sphericalTensorField>
Foam::sampledPatch::interpolate
(
    const interpolation<sphericalTensor>& interpolator
) const
{
    return interpolateField(interpolator);
}


Foam::tmp<Foam::symmTensorField>
Foam::sampledPatch::interpolate
(
    const interpolation<symmTensor>& interpolator
) const
{
    return interpolateField(interpolator);
}


Foam::tmp<Foam::tensorField>
Foam::sampledPatch::interpolate
(
    const interpolation<tensor>& interpolator
) const
{
    return interpolateField(interpolator);
}


void Foam::sampledPatch::print(Ostream& os) const
{
    os  << "sampledPatch: " << name() << " :"
        << "  patch:" << patchName()
        << "  faces:" << faces().size()
        << "  points:" << points().size();
}


// ************************************************************************* //