treeDataCell.H

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/*---------------------------------------------------------------------------*\
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  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | www.openfoam.com
     \\/     M anipulation  |
-------------------------------------------------------------------------------
    Copyright (C) 2011-2016 OpenFOAM Foundation
-------------------------------------------------------------------------------
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::treeDataCell
 
Description
    Encapsulation of data needed to search in/for cells. Used to find the
    cell containing a point (e.g. cell-cell mapping).
 
SourceFiles
    treeDataCell.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef treeDataCell_H
#define treeDataCell_H
 
#include "polyMesh.H"
#include "treeBoundBoxList.H"
#include "volumeType.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
// Forward declaration of classes
template<class Type> class indexedOctree;
 
/*---------------------------------------------------------------------------*\
                        Class treeDataCell Declaration
\*---------------------------------------------------------------------------*/
 
class treeDataCell
{
    // Private data
 
        const polyMesh& mesh_;
 
        //- Subset of cells to work on
        const labelList cellLabels_;
 
        //- Whether to precalculate and store cell bounding box
        const bool cacheBb_;
 
        //- How to decide if point is inside cell
        const polyMesh::cellDecomposition decompMode_;
 
        //- Cell bounding boxes (valid only if cacheBb_)
        treeBoundBoxList bbs_;
 
 
    // Private Member Functions
 
        //- Calculate cell bounding box
        treeBoundBox calcCellBb(const label celli) const;
 
        //- Initialise all member data
        void update();
 
public:
 
 
    class findNearestOp
    {
        const indexedOctree<treeDataCell>& tree_;
 
    public:
 
        findNearestOp(const indexedOctree<treeDataCell>& tree);
 
        void operator()
        (
            const labelUList& indices,
            const point& sample,
 
            scalar& nearestDistSqr,
            label& minIndex,
            point& nearestPoint
        ) const;
 
        void operator()
        (
            const labelUList& indices,
            const linePointRef& ln,
 
            treeBoundBox& tightest,
            label& minIndex,
            point& linePoint,
            point& nearestPoint
        ) const;
    };
 
 
    class findIntersectOp
    {
        const indexedOctree<treeDataCell>& tree_;
 
    public:
 
        findIntersectOp(const indexedOctree<treeDataCell>& tree);
 
        bool operator()
        (
            const label index,
            const point& start,
            const point& end,
            point& intersectionPoint
        ) const;
    };
 
 
    // Declare name of the class and its debug switch
    ClassName("treeDataCell");
 
 
    // Constructors
 
        //- Construct from mesh, copying subset of cells.
        treeDataCell
        (
            const bool cacheBb,
            const polyMesh& mesh,
            const labelUList& cellLabels,
            const polyMesh::cellDecomposition decompMode
        );
 
        //- Construct from mesh, moving subset of cells
        treeDataCell
        (
            const bool cacheBb,
            const polyMesh& mesh,
            labelList&& cellLabels,
            const polyMesh::cellDecomposition decompMode
        );
 
        //- Construct from mesh. Uses all cells in mesh.
        treeDataCell
        (
            const bool cacheBb,
            const polyMesh& mesh,
            const polyMesh::cellDecomposition decompMode
        );
 
 
    // Member Functions
 
        // Access
 
            inline const labelList& cellLabels() const
            {
                return cellLabels_;
            }
 
            inline const polyMesh& mesh() const
            {
                return mesh_;
            }
 
            inline polyMesh::cellDecomposition decompMode() const
            {
                return decompMode_;
            }
 
            inline label size() const
            {
                return cellLabels_.size();
            }
 
            //- Get representative point cloud for all shapes inside
            //  (one point per shape)
            pointField shapePoints() const;
 
 
        // Search
 
            //- Get type (inside,outside,mixed,unknown) of point w.r.t. surface.
            //  Only makes sense for closed surfaces.
            volumeType getVolumeType
            (
                const indexedOctree<treeDataCell>&,
                const point&
            ) const
            {
                NotImplemented;
                return volumeType::UNKNOWN;
            }
 
            //- Does (bb of) shape at index overlap bb
            bool overlaps
            (
                const label index,
                const treeBoundBox& sampleBb
            ) const;
 
            //- Does shape at index contain sample
            bool contains
            (
                const label index,
                const point& sample
            ) const;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
 
#endif
 
// ************************************************************************* //