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vtkMesh.H

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00001 /*---------------------------------------------------------------------------*\
00002   =========                 |
00003   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
00004    \\    /   O peration     |
00005     \\  /    A nd           | Copyright (C) 1991-2010 OpenCFD Ltd.
00006      \\/     M anipulation  |
00007 -------------------------------------------------------------------------------
00008 License
00009     This file is part of OpenFOAM.
00010 
00011     OpenFOAM is free software: you can redistribute it and/or modify it
00012     under the terms of the GNU General Public License as published by
00013     the Free Software Foundation, either version 3 of the License, or
00014     (at your option) any later version.
00015 
00016     OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
00017     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
00018     FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
00019     for more details.
00020 
00021     You should have received a copy of the GNU General Public License
00022     along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
00023 
00024 Class
00025     Foam::vtkMesh
00026 
00027 Description
00028     Encapsulation of VTK mesh data. Holds mesh or meshsubset and
00029     polyhedral-cell decomposition on it.
00030 
00031 SourceFiles
00032     vtkMesh.C
00033 
00034 \*---------------------------------------------------------------------------*/
00035 
00036 #ifndef vtkMesh_H
00037 #define vtkMesh_H
00038 
00039 #include "vtkTopo.H"
00040 #include <finiteVolume/fvMeshSubset.H>
00041 
00042 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
00043 
00044 namespace Foam
00045 {
00046 
00047 // Forward declaration of classes
00048 class Time;
00049 
00050 /*---------------------------------------------------------------------------*\
00051                            Class vtkMesh Declaration
00052 \*---------------------------------------------------------------------------*/
00053 
00054 class vtkMesh
00055 {
00056     // Private data
00057 
00058         //- Reference to mesh
00059         fvMesh& baseMesh_;
00060 
00061         //- Subsetting engine + sub-fvMesh
00062         fvMeshSubset subsetter_;
00063 
00064         //- Current cellSet (or empty)
00065         const word setName_;
00066 
00067         //- Current decomposition of topology
00068         mutable autoPtr<vtkTopo> topoPtr_;
00069 
00070 
00071 
00072     // Private Member Functions
00073 
00074         //- Disallow default bitwise copy construct
00075         vtkMesh(const vtkMesh&);
00076 
00077         //- Disallow default bitwise assignment
00078         void operator=(const vtkMesh&);
00079 
00080 
00081 public:
00082 
00083     // Constructors
00084 
00085         //- Construct from components
00086         vtkMesh(fvMesh& baseMesh, const word& setName = "");
00087 
00088 
00089     // Member Functions
00090 
00091         // Access
00092 
00093             //- whole mesh
00094             const fvMesh& baseMesh() const
00095             {
00096                 return baseMesh_;
00097             }
00098 
00099             const fvMeshSubset& subsetter() const
00100             {
00101                 return subsetter_;
00102             }
00103 
00104             //- Check if running subMesh
00105             bool useSubMesh() const
00106             {
00107                 return setName_.size();
00108             }
00109 
00110             //- topology
00111             const vtkTopo& topo() const
00112             {
00113                 if (topoPtr_.empty())
00114                 {
00115                     topoPtr_.reset(new vtkTopo(mesh()));
00116                 }
00117                 return topoPtr_();
00118             }
00119 
00120             //- Access either mesh or submesh
00121             const fvMesh& mesh() const
00122             {
00123                 if (useSubMesh())
00124                 {
00125                     return subsetter_.subMesh();
00126                 }
00127                 else
00128                 {
00129                     return baseMesh_;
00130                 }
00131             }
00132 
00133             //- Number of field cells
00134             label nFieldCells() const
00135             {
00136                 return topo().cellTypes().size();
00137             }
00138 
00139             //- Number of field points
00140             label nFieldPoints() const
00141             {
00142                 return mesh().nPoints() + topo().addPointCellLabels().size();
00143             }
00144 
00145 
00146         // Edit
00147 
00148             //- Read mesh
00149             polyMesh::readUpdateState readUpdate();
00150 
00151 
00152             //- Map volume field (does in fact do very little interpolation;
00153             //  just copied from fvMeshSubset)
00154             template<class GeoField>
00155             tmp<GeoField> interpolate(const GeoField& fld) const
00156             {
00157                 if (useSubMesh())
00158                 {
00159                     tmp<GeoField> subFld = subsetter_.interpolate(fld);
00160                     subFld().rename(fld.name());
00161                     return subFld;
00162                 }
00163                 else
00164                 {
00165                     return fld;
00166                 }
00167             }
00168 };
00169 
00170 
00171 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
00172 
00173 } // End namespace Foam
00174 
00175 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
00176 
00177 #endif
00178 
00179 // ************************ vim: set sw=4 sts=4 et: ************************ //
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