/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | www.openfoam.com
     \\/     M anipulation  |
-------------------------------------------------------------------------------
    Copyright (C) 2012-2016 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::conformationSurfaces

Description

SourceFiles
    conformationSurfacesI.H
    conformationSurfaces.C

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

#ifndef conformationSurfaces_H
#define conformationSurfaces_H

#include "searchableSurfaces.H"
#include "searchableSurfacesQueries.H"
#include "extendedFeatureEdgeMesh.H"
#include "boolList.H"
#include "volumeType.H"
#include "surfaceZonesInfo.H"

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

namespace Foam
{

/*---------------------------------------------------------------------------*\
                    Class conformationSurfaces Declaration
\*---------------------------------------------------------------------------*/

class conformationSurfaces
{
    typedef extendedFeatureEdgeMesh::sideVolumeType sideVolumeType;

    // Private Data

        const Time& runTime_;

        //- Reference to the searchableSurfaces object holding all geometry data
        const searchableSurfaces& allGeometry_;

        //- A list of extendedFeatureEdgeMesh
        PtrList<extendedFeatureEdgeMesh> features_;

        //- The location in the mesh that specifies which portion of surfaces is
        //  to be meshed.
        point locationInMesh_;

        //- Indices of surfaces in allGeometry that are to be conformed to
        labelList surfaces_;

        //- Reverse mapping, which entry in surfaces corresponds to the surface
        //  in allGeometry specified by the list index.  -1 for a surface that
        //  isn't used.
        labelList allGeometryToSurfaces_;

        //- A boolean value for each surface to be conformed to specifying if it
        //  is to be treated as a baffle
        List<sideVolumeType> normalVolumeTypes_;

        //- A flat list of all of the names of the patches from all of the
        //  surfaces to be reproduced in the meshed geometry
        List<word> patchNames_;

        //- List of surface zone (face and cell zone) information
        PtrList<surfaceZonesInfo> surfZones_;

        //- The offset between the patch indices of the individual surface and
        //  the entry in the overall patch list
        labelList regionOffset_;

        //- From global region number to patchType
        PtrList<dictionary> patchInfo_;

        //- The overall boundBox of all of the surfaces to be conformed to
        treeBoundBox globalBounds_;

        //- The pattern/signature of volumeTypes representing a point in the
        // domain to be meshed
        List<volumeType> referenceVolumeTypes_;


    // Private Member Functions

        void hasBoundedVolume(List<volumeType>& referenceVolumeTypes) const;

        //- Read into features_ from a dictionary
        void readFeatures
        (
            const label surfI,
            const dictionary& featureDict,
            const word& surfaceName,
            label& featureIndex
        );

        void readFeatures
        (
            const dictionary& featureDict,
            const word& surfaceName,
            label& featureIndex
        );

        //- No copy construct
        conformationSurfaces(const conformationSurfaces&) = delete;

        //- No copy assignment
        void operator=(const conformationSurfaces&) = delete;


public:

    //- Runtime type information
    ClassName("conformationSurfaces");


    // Constructors

        //- Construct from dictionary and references to conformalVoronoiMesh and
        //  searchableSurfaces
        conformationSurfaces
        (
            const Time& runTime,
            Random& rndGen,
            const searchableSurfaces& allGeometry,
            const dictionary& surfaceConformationDict
        );

    //- Destructor
    ~conformationSurfaces() = default;


    // Member Functions

        // Access

            //- Return reference to the searchableSurfaces object containing all
            //  of the geometry
            inline const searchableSurfaces& geometry() const;

            //- Return the object holding the feature points and edges
            inline const PtrList<extendedFeatureEdgeMesh>& features() const;

            //- Return the location to mesh
            inline const point& locationInMesh() const;

            //- Return the surface indices
            inline const labelList& surfaces() const;

            //- Return the patch names
            inline const List<word>& patchNames() const;

            //- Return the surfaceZonesInfo
            inline const PtrList<surfaceZonesInfo>& surfZones() const;

            //- Return the patch info
            inline const PtrList<dictionary>& patchInfo() const;

            //- Return the global bounds
            inline const treeBoundBox& globalBounds() const;


        // Query

            //- Check if the supplied bound box overlaps any part of any of
            //  the surfaces
            bool overlaps(const boundBox& bb) const;

            //- Check if points are inside surfaces to conform to
            Field<bool> inside(const pointField& samplePts) const;

            //- Check if point is inside surfaces to conform to
            bool inside(const point& samplePt) const;

            //- Check if points are outside surfaces to conform to
            Field<bool> outside(const pointField& samplePts) const;

            //- Check if point is outside surfaces to conform to
            bool outside(const point& samplePt) const;

            //- Check if point is closer to the surfaces to conform to than
            //  testDistSqr, in which case return false, otherwise assess in or
            //  outside and return a result depending on the testForInside flag
            Field<bool> wellInOutSide
            (
                const pointField& samplePts,
                const scalarField& testDistSqr,
                bool testForInside
            ) const;

            //- Check if point is inside surfaces to conform to by at least
            //  testDistSqr
            Field<bool> wellInside
            (
                const pointField& samplePts,
                const scalarField& testDistSqr
            ) const;

            bool wellInside
            (
                const point& samplePt,
                scalar testDistSqr
            ) const;

            //- Check if point is outside surfaces to conform to by at least
            //  testDistSqr
            Field<bool> wellOutside
            (
                const pointField& samplePts,
                const scalarField& testDistSqr
            ) const;

            bool wellOutside
            (
                const point& samplePt,
                scalar testDistSqr
            ) const;

            // Finding if the line joining start and end intersects the surface
            bool findSurfaceAnyIntersection
            (
                const point& start,
                const point& end
            ) const;

            //- Finding if the line joining start and end intersects the surface
            //  and returning the hit and surface information
            void findSurfaceAnyIntersection
            (
                const point& start,
                const point& end,
                pointIndexHit& surfHit,
                label& hitSurface
            ) const;

            void findSurfaceAllIntersections
            (
                const point& start,
                const point& end,
                List<pointIndexHit>& surfHit,
                labelList& hitSurface
            ) const;

            //- Finding the nearestIntersection of the surface to start
            void findSurfaceNearestIntersection
            (
                const point& start,
                const point& end,
                pointIndexHit& surfHit,
                label& hitSurface
            ) const;

            //- Find the nearest point to the sample and return it to the
            //  pointIndexHit
            void findSurfaceNearest
            (
                const point& sample,
                scalar nearestDistSqr,
                pointIndexHit& surfHit,
                label& hitSurface
            ) const;

            void findSurfaceNearest
            (
                const pointField& samples,
                const scalarField& nearestDistSqr,
                List<pointIndexHit>& hitInfo,
                labelList& hitSurfaces
            ) const;

            //- Find the nearest point on any feature edge
            void findFeaturePointNearest
            (
                const point& sample,
                scalar nearestDistSqr,
                pointIndexHit& fpHit,
                label& featureHit
            ) const;

            //- Find the nearest point on any feature edge
            void findEdgeNearest
            (
                const point& sample,
                scalar nearestDistSqr,
                pointIndexHit& edgeHit,
                label& featureHit
            ) const;

            void findEdgeNearest
            (
                const pointField& samples,
                const scalarField& nearestDistsSqr,
                List<pointIndexHit>& edgeHits,
                labelList& featuresHit
            ) const;

            //- Find the nearest point on each type of feature edge
            void findEdgeNearestByType
            (
                const point& sample,
                scalar nearestDistSqr,
                List<pointIndexHit>& edgeHit,
                List<label>& featuresHit
            ) const;

            //- Find the nearest points on each feature edge that is within
            //  a given distance from the sample point. Will need to check for
            //  a hit or a miss because near edges may not have a nearest point
            //  on them which is perpendicular to the sample point.
            void findAllNearestEdges
            (
                const point& sample,
                const scalar searchRadiusSqr,
                List<List<pointIndexHit>>& edgeHitsByFeature,
                List<label>& featuresHit
            ) const;

            //- Get the region number of a hit surface
            label getPatchID
            (
                const label hitSurface,
                const pointIndexHit& surfHit
            ) const;

            //- Find which patch is intersected by the line from one point to
            //  another
            label findPatch(const point& ptA, const point& ptB) const;

            //- Find which patch is closest to the point
            label findPatch(const point& pt) const;

            //- Is the surface a baffle.
            extendedFeatureEdgeMesh::sideVolumeType meshableSide
            (
                const label hitSurface,
                const pointIndexHit& surfHit
            ) const;

            void getNormal
            (
                const label hitSurface,
                const List<pointIndexHit>& surfHit,
                vectorField& normal
            ) const;


        // Write

            //- Write all components of all the extendedFeatureEdgeMeshes as
            //  an obj file
            void writeFeatureObj(const fileName& prefix) const;

};


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

} // End namespace Foam

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

#include "conformationSurfacesI.H"

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

#endif

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