src/meshTools/searchableSurface/triSurfaceMesh.H

   1 /*---------------------------------------------------------------------------*\
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   5     \\  /    A nd           | Copyright (C) 1991-2009 OpenCFD Ltd.
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   7 -------------------------------------------------------------------------------
   8 License
   9     This file is part of OpenFOAM.
  10
  11     OpenFOAM is free software; you can redistribute it and/or modify it
  12     under the terms of the GNU General Public License as published by the
  13     Free Software Foundation; either version 2 of the License, or (at your
  14     option) any later version.
  15
  16     OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
  17     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  18     FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  19     for more details.
  20
  21     You should have received a copy of the GNU General Public License
  22     along with OpenFOAM; if not, write to the Free Software Foundation,
  23     Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  24
  25 Class
  26     Foam::triSurfaceMesh
  27
  28 Description
  29     IOoject and searching on triSurface
  30
  31     Note: when constructing from dictionary has optional parameters:
  32         - scale     : scaling factor.
  33         - tolerance : relative tolerance for doing intersections
  34                       (see triangle::intersection)
  35
  36 SourceFiles
  37     triSurfaceMesh.C
  38
  39 \*---------------------------------------------------------------------------*/
  40
  41 #ifndef triSurfaceMesh_H
  42 #define triSurfaceMesh_H
  43
  44 #include "treeBoundBox.H"
  45 #include "searchableSurface.H"
  46 #include "objectRegistry.H"
  47 #include "indexedOctree.H"
  48 #include "treeDataTriSurface.H"
  49 #include "treeDataEdge.H"
  50 #include "EdgeMap.H"
  51
  52 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
  53
  54 namespace Foam
  55 {
  56
  57 /*---------------------------------------------------------------------------*\
  58                            Class triSurfaceMesh Declaration
  59 \*---------------------------------------------------------------------------*/
  60
  61 class triSurfaceMesh
  62 :
  63     public searchableSurface,
  64     public objectRegistry,      // so we can store fields
  65     public triSurface
  66 {
  67 private:
  68
  69     // Private member data
  70
  71         //- Optional tolerance to use in searches
  72         scalar tolerance_;
  73
  74         //- Optional max tree depth of octree
  75         label maxTreeDepth_;
  76
  77         //- Search tree (triangles)
  78         mutable autoPtr<indexedOctree<treeDataTriSurface> > tree_;
  79
  80         //- Search tree for boundary edges.
  81         mutable autoPtr<indexedOctree<treeDataEdge> > edgeTree_;
  82
  83         //- Names of regions
  84         mutable wordList regions_;
  85
  86         //- Is surface closed
  87         mutable label surfaceClosed_;
  88
  89     // Private Member Functions
  90
  91         ////- Helper: find instance of files without header
  92         //static word findRawInstance
  93         //(
  94         //    const Time&,
  95         //    const fileName&,
  96         //    const word&
  97         //);
  98
  99         //- Check file existence
 100         static const fileName& checkFile
 101         (
 102             const fileName& fName,
 103             const fileName& objectName
 104         );
 105
 106         //- Helper function for isSurfaceClosed
 107         static bool addFaceToEdge
 108         (
 109             const edge&,
 110             EdgeMap<label>&
 111         );
 112
 113         //- Check whether surface is closed without calculating any permanent
 114         //  addressing.
 115         bool isSurfaceClosed() const;
 116
 117         //- Steps to next intersection. Adds smallVec and starts tracking
 118         //  from there.
 119         static void getNextIntersections
 120         (
 121             const indexedOctree<treeDataTriSurface>& octree,
 122             const point& start,
 123             const point& end,
 124             const vector& smallVec,
 125             DynamicList<pointIndexHit, 1, 1>& hits
 126         );
 127
 128         //- Disallow default bitwise copy construct
 129         triSurfaceMesh(const triSurfaceMesh&);
 130
 131         //- Disallow default bitwise assignment
 132         void operator=(const triSurfaceMesh&);
 133
 134
 135 protected:
 136
 137         //- Calculate (number of)used points and their bounding box
 138         void calcBounds(boundBox& bb, label& nPoints) const;
 139
 140 public:
 141
 142     //- Runtime type information
 143     TypeName("triSurfaceMesh");
 144
 145
 146     // Constructors
 147
 148         //- Construct from triSurface
 149         triSurfaceMesh(const IOobject&, const triSurface&);
 150
 151         //- Construct read.
 152         triSurfaceMesh(const IOobject& io);
 153
 154         //- Construct from IO and dictionary (used by searchableSurface).
 155         //  Dictionary may contain a 'scale' entry (eg, 0.001: mm -> m)
 156         triSurfaceMesh
 157         (
 158             const IOobject& io,
 159             const dictionary& dict
 160         );
 161
 162
 163     // Destructor
 164
 165         virtual ~triSurfaceMesh();
 166
 167         //- Clear storage
 168         void clearOut();
 169
 170
 171     // Member Functions
 172
 173         //- Move points
 174         virtual void movePoints(const pointField&);
 175
 176         //- Demand driven contruction of octree
 177         const indexedOctree<treeDataTriSurface>& tree() const;
 178
 179         //- Demand driven contruction of octree for boundary edges
 180         const indexedOctree<treeDataEdge>& edgeTree() const;
 181
 182
 183         // searchableSurface implementation
 184
 185             virtual const wordList& regions() const;
 186
 187             //- Whether supports volume type below. I.e. whether is closed.
 188             virtual bool hasVolumeType() const;
 189
 190             //- Range of local indices that can be returned.
 191             virtual label size() const
 192             {
 193                 return triSurface::size();
 194             }
 195
 196             //- Get representative set of element coordinates
 197             //  Usually the element centres (should be of length size()).
 198             virtual pointField coordinates() const;
 199
 200             virtual void findNearest
 201             (
 202                 const pointField& sample,
 203                 const scalarField& nearestDistSqr,
 204                 List<pointIndexHit>&
 205             ) const;
 206
 207             virtual void findLine
 208             (
 209                 const pointField& start,
 210                 const pointField& end,
 211                 List<pointIndexHit>&
 212             ) const;
 213
 214             virtual void findLineAny
 215             (
 216                 const pointField& start,
 217                 const pointField& end,
 218                 List<pointIndexHit>&
 219             ) const;
 220
 221             //- Get all intersections in order from start to end.
 222             virtual void findLineAll
 223             (
 224                 const pointField& start,
 225                 const pointField& end,
 226                 List<List<pointIndexHit> >&
 227             ) const;
 228
 229             //- From a set of points and indices get the region
 230             virtual void getRegion
 231             (
 232                 const List<pointIndexHit>&,
 233                 labelList& region
 234             ) const;
 235
 236             //- From a set of points and indices get the normal
 237             virtual void getNormal
 238             (
 239                 const List<pointIndexHit>&,
 240                 vectorField& normal
 241             ) const;
 242
 243             //- Determine type (inside/outside/mixed) for point. unknown if
 244             //  cannot be determined (e.g. non-manifold surface)
 245             virtual void getVolumeType
 246             (
 247                 const pointField&,
 248                 List<volumeType>&
 249             ) const;
 250
 251         // Other
 252
 253             //- Set bounds of surface. Bounds currently set as list of
 254             //  bounding boxes. The bounds are hints to the surface as for
 255             //  the range of queries it can expect. faceMap/pointMap can be
 256             //  set if the surface has done any redistribution.
 257             virtual void distribute
 258             (
 259                 const List<treeBoundBox>&,
 260                 const bool keepNonLocal,
 261                 autoPtr<mapDistribute>& faceMap,
 262                 autoPtr<mapDistribute>& pointMap
 263             )
 264             {}
 265
 266             //- WIP. Store element-wise field.
 267             virtual void setField(const labelList& values);
 268
 269             //- WIP. From a set of hits (points and
 270             //  indices) get the specified field. Misses do not get set.
 271             virtual void getField(const List<pointIndexHit>&, labelList&) const;
 272
 273
 274         // regIOobject implementation
 275
 276             bool writeData(Ostream&) const
 277             {
 278                 notImplemented("triSurfaceMesh::writeData(Ostream&) const");
 279                 return false;
 280             }
 281
 282             //- Write using given format, version and compression
 283             virtual bool writeObject
 284             (
 285                 IOstream::streamFormat fmt,
 286                 IOstream::versionNumber ver,
 287                 IOstream::compressionType cmp
 288             ) const;
 289
 290 };
 291
 292
 293 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 294
 295 } // End namespace Foam
 296
 297 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 298
 299 #endif
 300
 301 // ************************************************************************* //