meshOctreeCreator.H

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/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | cfMesh: A library for mesh generation
   \\    /   O peration     |
    \\  /    A nd           | Author: Franjo Juretic (franjo.juretic@c-fields.com)
     \\/     M anipulation  | Copyright (C) Creative Fields, Ltd.
-------------------------------------------------------------------------------
License
    This file is part of cfMesh.
 
    cfMesh 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.
 
    cfMesh 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 cfMesh.  If not, see <http://www.gnu.org/licenses/>.
 
Class
    meshOctreeCreator
 
Description
    Creates octree for mesh generation
 
SourceFiles
    meshOctreeCreator.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef meshOctreeCreator_H
#define meshOctreeCreator_H
 
#include "boolList.H"
#include "DynList.H"
#include "IOdictionary.H"
#include "meshOctreeModifier.H"
#include "patchRefinementList.H"
 
#include <map>
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
// Forward declarations
class meshOctreeCube;
 
/*---------------------------------------------------------------------------*\
                    Class meshOctreeCreator Declaration
\*---------------------------------------------------------------------------*/
 
class meshOctreeCreator
{
protected:
 
    // Protected data
        //- Reference to meshOctree
        meshOctree& octree_;
 
        //- Scaling factor
        scalar scalingFactor_;
 
        //- Dictionary containing information necessary to perform refinement
        const IOdictionary* meshDictPtr_;
 
        //- hex refinement flag
        bool hexRefinement_;
 
private:
    // Private member functions
 
    // Octree refinement
        //- refine boxes contained inside the objects for refinement
        void refineBoxesContainedInObjects();
 
        //- refine boxes intersected by surface meshes
        //- used as refinement sources
        void refineBoxesIntersectingSurfaces();
 
        //- refine boxes by edge meshes
        //- used as refinement sources
        void refineBoxesIntersectingEdgeMeshes();
 
        //- refine boxes near DATA boxes to get a nice smooth surface
        void refineBoxesNearDataBoxes(const label nLayers = 1);
 
        //- refine boxes of the given flag to the given size
        void refineBoxes(const direction refLevel, const direction cubeType);
 
        // Private octree creation methods
        void refineBoundary();
        void createInsideOutsideInformation();
        void refineInsideAndUnknownBoxes();
 
    // Private member functions for parallel runs
        //- move octree cubes from one processor to another until
        //- each processor contains the same number of leaves
        //- of the required type
        void loadDistribution(const bool distributeUsed = false);
 
        // information about octree refinement
        //- ref level to achieve max cell size
        direction globalRefLevel_;
 
        //- this list contains ref level for each surface triangle
        List<DynList<std::pair<direction, scalar> > > surfRefLevel_;
 
        //- set the boundBox such that maxCellSize is achieved
        void setRootCubeSizeAndRefParameters();
 
    // Private copy constructor
        //- Disallow default bitwise copy construct
        meshOctreeCreator(const meshOctreeCreator&);
 
        //- Disallow default bitwise assignment
        void operator=(const meshOctreeCreator&);
 
public:
 
    // Constructors
 
        //- construct from meshOctree
        meshOctreeCreator(meshOctree&);
 
        //- Construct from meshOctree and dictionary
        meshOctreeCreator(meshOctree& mo, const IOdictionary& dict);
 
    // Destructor
 
        ~meshOctreeCreator();
 
 
    // Member Functions
        //- set the scaling factor
        void setScalingFactor(const scalar);
 
        //- activate octree refinement which marks all sons of an octree box
        //- for refinement in case a single son is marked for refinement
        //- this type of refinement is necessary for creating hex meshes
        void activateHexRefinement();
 
        //- create octree boxes
        void createOctreeBoxes();
 
        //- refine boxes containing surface elements
        //- this is used for proximity searches
        void createOctreeWithRefinedBoundary
        (
            const direction maxLevel,
            const label nTrianglesInLeaf = 15
        );
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //