/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
     \\/     M anipulation  | Copyright (C) 2017 OpenCFD Ltd.
-------------------------------------------------------------------------------
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::vtkPVblockMesh

Description
    Provides a reader interface for OpenFOAM blockMesh to VTK interaction

SourceFiles
    vtkPVblockMesh.C
    vtkPVblockMeshConvert.C
    vtkPVblockMeshUpdate.C
    vtkPVblockMeshUtils.C

    // Needed by VTK:
    vtkDataArrayTemplateImplicit.txx

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

#ifndef vtkPVblockMesh_H
#define vtkPVblockMesh_H

#include "foamPvCore.H"

// * * * * * * * * * * * * * Forward Declarations  * * * * * * * * * * * * * //

class vtkDataArraySelection;
class vtkDataSet;
class vtkPoints;
class vtkPVblockMeshReader;
class vtkRenderer;
class vtkTextActor;
class vtkMultiBlockDataSet;
class vtkPolyData;
class vtkUnstructuredGrid;
class vtkIndent;

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

namespace Foam
{

// OpenFOAM class forward declarations
class argList;
class Time;
class blockMesh;

template<class Type> class List;

/*---------------------------------------------------------------------------*\
                     Class vtkPVblockMesh Declaration
\*---------------------------------------------------------------------------*/

class vtkPVblockMesh
:
    private foamPvCore
{
    // Private Data

        //- Access to the controlling vtkPVblockMeshReader
        vtkPVblockMeshReader* reader_;

        //- OpenFOAM time control
        autoPtr<Time> dbPtr_;

        //- OpenFOAM mesh
        blockMesh* meshPtr_;

        //- The mesh region
        word meshRegion_;

        //- The mesh directory for the region
        fileName meshDir_;

        //- Selected geometrical parts
        boolList blockStatus_;

        //- Selected curved edges
        boolList edgeStatus_;

        //- First instance and size of bleckMesh blocks
        //  used to index into blockStatus_
        arrayRange arrayRangeBlocks_;

        //- First instance and size of CurvedEdges (only partially used)
        arrayRange arrayRangeEdges_;

        //- First instance and size of block corners (only partially used)
        arrayRange arrayRangeCorners_;

        //- List of patch names for rendering to window
        List<vtkTextActor*> patchTextActorsPtrs_;

        //- List of point numbers for rendering to window
        List<vtkTextActor*> pointTextActorsPtrs_;


    // Private Member Functions

        //- Create a text actor
        static vtkTextActor* createTextActor(const string& s, const point& pt);

        //- Reset data counters
        void resetCounters();

        //- OpenFOAM mesh
        void updateFoamMesh();

        //- Internal block info
        void updateInfoBlocks(vtkDataArraySelection* select);

        //- Block curved edges info
        void updateInfoEdges(vtkDataArraySelection* select);

        //- Mesh blocks
        void convertMeshBlocks(vtkMultiBlockDataSet*, int& blockNo);

        //- Mesh curved edges
        void convertMeshEdges(vtkMultiBlockDataSet*, int& blockNo);

        //- Mesh corners
        void convertMeshCorners(vtkMultiBlockDataSet*, int& blockNo);


        //- Disallow default bitwise copy construct
        vtkPVblockMesh(const vtkPVblockMesh&) = delete;

        //- Disallow default bitwise assignment
        void operator=(const vtkPVblockMesh&) = delete;


public:

    //- Static data members

        ClassName("vtkPVblockMesh");


    // Constructors

        //- Construct from components
        vtkPVblockMesh
        (
            const char* const FileName,
            vtkPVblockMeshReader* reader
        );


    //- Destructor
    ~vtkPVblockMesh();


    // Member Functions

        //- Update
        void updateInfo();

        void Update(vtkMultiBlockDataSet* output);

        //- Clean any storage
        void CleanUp();

        //- Add/remove patch names to/from the view
        void renderPatchNames(vtkRenderer*, const bool show);

        //- Add/remove point numbers to/from the view
        void renderPointNumbers(vtkRenderer*, const bool show);

     // Access

        //- Debug information
        void PrintSelf(ostream&, vtkIndent) const;

};


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

} // End namespace Foam

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

#endif

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