/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | Copyright held by original author
     \\/     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 "readFields.H"
#include "IOobjectList.H"

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

namespace Foam
{

// * * * * * * * * * * * * * * * Global Functions  * * * * * * * * * * * * * //

template<class GeoField>
void readFields
(
    const vtkMesh& vMesh,
    const typename GeoField::Mesh& mesh,
    const IOobjectList& objects,
    const HashSet<word>& selectedFields,
    PtrList<GeoField>& fields
)
{
    // Search list of objects for volScalarFields
    IOobjectList fieldObjects(objects.lookupClass(GeoField::typeName));

    // Construct the vol scalar fields
    fields.setSize(fieldObjects.size());
    label nFields = 0;

    for
    (
        IOobjectList::iterator iter = fieldObjects.begin();
        iter != fieldObjects.end();
        ++iter
    )
    {
        if (selectedFields.empty() || selectedFields.found(iter()->name()))
        {
            fields.set
            (
                nFields,
                vMesh.interpolate
                (
                    GeoField
                    (
                        *iter(),
                        mesh
                    )
                )
            );
            nFields++;
        }
    }

    fields.setSize(nFields);
}


template<class GeoField>
void readFieldsNoSubset
(
    const vtkMesh& vMesh,
    const typename GeoField::Mesh& mesh,
    const IOobjectList& objects,
    const HashSet<word>& selectedFields,
    PtrList<GeoField>& fields
)
{
    // Search list of objects for volScalarFields
    IOobjectList fieldObjects(objects.lookupClass(GeoField::typeName));

    // Construct the vol scalar fields
    fields.setSize(fieldObjects.size());
    label nFields = 0;

    for
    (
        IOobjectList::iterator iter = fieldObjects.begin();
        iter != fieldObjects.end();
        ++iter
    )
    {
        if (!selectedFields.size() || selectedFields.found(iter()->name()))
        {
            fields.set
            (
                nFields,
                GeoField
                (
                    *iter(),
                    mesh
                )
            );
            nFields++;
        }
    }

    fields.setSize(nFields);
}


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

} // End namespace Foam

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