1 // SMESH SMESH : implementaion of SMESH idl descriptions
3 // Copyright (C) 2003 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
4 // CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
6 // This library is free software; you can redistribute it and/or
7 // modify it under the terms of the GNU Lesser General Public
8 // License as published by the Free Software Foundation; either
9 // version 2.1 of the License.
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 // Lesser General Public License for more details.
16 // You should have received a copy of the GNU Lesser General Public
17 // License along with this library; if not, write to the Free Software
18 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
24 // File : StdMeshers_Prism_3D.hxx
27 #ifndef _SMESH_Prism_3D_HXX_
28 #define _SMESH_Prism_3D_HXX_
30 #include "SMESH_3D_Algo.hxx"
31 #include "SMDS_TypeOfPosition.hxx"
32 #include "SMDS_MeshNode.hxx"
33 #include "SMESH_Block.hxx"
34 #include "SMESH_Mesh.hxx"
35 #include "SMESHDS_Mesh.hxx"
36 #include "SMESH_subMesh.hxx"
37 #include "SMESH_MesherHelper.hxx"
42 #include <Adaptor3d_Curve.hxx>
43 #include <Adaptor3d_Surface.hxx>
44 #include <Adaptor2d_Curve2d.hxx>
45 #include <BRepAdaptor_Surface.hxx>
46 #include <TopTools_IndexedMapOfOrientedShape.hxx>
50 class SMESHDS_SubMesh;
55 //typedef std::map<const SMDS_MeshNode*, const SMDS_MeshNode*> TNodeNodeMap;
56 typedef std::vector<const SMDS_MeshNode* > TNodeColumn;
58 // map of bottom nodes to the column of nodes above them
59 // (the column includes the bottom nodes)
60 typedef std::map< TNode, TNodeColumn > TNode2ColumnMap;
61 typedef std::map< double, TNodeColumn > TParam2ColumnMap;
62 typedef std::map< double, TNodeColumn >::const_iterator TParam2ColumnIt;
64 typedef TopTools_IndexedMapOfOrientedShape TBlockShapes;
66 // ===============================================
68 * \brief Structure containing node relative data
70 // ===============================================
74 const SMDS_MeshNode* myNode;
77 gp_XYZ GetCoords() const { return gp_XYZ( myNode->X(), myNode->Y(), myNode->Z() ); }
78 gp_XYZ GetParams() const { return myParams; }
79 gp_XYZ& ChangeParams() { return myParams; }
80 SMDS_TypeOfPosition GetPositionType() const
81 { return myNode ? myNode->GetPosition()->GetTypeOfPosition() : SMDS_TOP_UNSPEC; }
83 TNode(const SMDS_MeshNode* node = 0): myNode(node) {}
84 bool operator < (const TNode& other) const { return myNode < other.myNode; }
87 // ===============================================================
89 * \brief Tool analyzing and giving access to a prism geometry
90 * treating it like a block, i.e. the four side faces are
91 * emulated by division/uniting of missing/excess faces.
92 * It also manage associations between block subshapes and a mesh.
94 // ===============================================================
96 class StdMeshers_PrismAsBlock: public SMESH_Block
100 * \brief Constructor. Initialization is needed
102 StdMeshers_PrismAsBlock();
104 ~StdMeshers_PrismAsBlock();
107 * \brief Initialization.
108 * \param helper - helper loaded with mesh and 3D shape
109 * \param shape3D - a closed shell or solid
110 * \retval bool - false if a mesh or a shape are KO
112 * Analyse shape geometry and mesh.
113 * If there are triangles on one of faces, it becomes 'bottom'
115 bool Init(SMESH_MesherHelper* helper, const TopoDS_Shape& shape3D);
118 * \brief Return number of nodes on every vertical edge
119 * \retval int - number of nodes including end nodes
121 int VerticalSize() const { return myParam2ColumnMaps[0].begin()->second.size(); }
123 bool HasNotQuadElemOnTop() const { return myNotQuadOnTop; }
126 * \brief Return pointer to column of nodes
127 * \param node - bottom node from which the returned column goes up
128 * \retval const TNodeColumn* - the found column
130 const TNodeColumn* GetNodeColumn(const SMDS_MeshNode* node) const;
133 * \brief Return TParam2ColumnMap for a base edge
134 * \param baseEdgeID - base edge SMESHDS Index
135 * \param isReverse - columns in-block orientation
136 * \retval const TParam2ColumnMap& - map
138 const TParam2ColumnMap& GetParam2ColumnMap(const int baseEdgeID,
141 std::pair< TParam2ColumnMap*, bool > & col_frw =
142 myShapeIndex2ColumnMap[ baseEdgeID ];
143 isReverse = !col_frw.second;
144 return * col_frw.first;
148 * \brief Return pointer to mesh
149 * \retval SMESH_Mesh - mesh
151 SMESH_Mesh* Mesh() const { return myHelper->GetMesh(); }
154 * \brief Return pointer to mesh DS
155 * \retval SMESHDS_Mesh - mesh DS
157 SMESHDS_Mesh* MeshDS() const { return Mesh()->GetMeshDS(); }
160 * \brief Return submesh of a shape
161 * \param shapeID - shape given by in-block index
162 * \retval SMESH_subMesh* - found submesh
164 SMESH_subMesh* SubMesh(const int shapeID) const
165 { return Mesh()->GetSubMesh( Shape( shapeID )); }
168 * \brief Return submesh DS of a shape
169 * \param shapeID - shape given by in-block index
170 * \retval SMESHDS_SubMesh* - found submesh DS
172 SMESHDS_SubMesh* SubMeshDS(const int shapeID) const
173 { return SubMesh(shapeID)->GetSubMeshDS(); }
176 * \brief Return a in-block shape
177 * \param shapeID - shape given by in-block index
178 * \retval SMESHDS_SubMesh* - found submesh
180 const TopoDS_Shape& Shape(const int shapeID) const
181 { return myShapeIDMap( shapeID ); }
184 * \brief Return in-block ID of a shape
185 * \param shape - block subshape
186 * \retval int - ID or zero if the shape has no ID
188 int ShapeID(const TopoDS_Shape& shape) const
189 { return myShapeIDMap.FindIndex( shape ); }
192 * \brief Check curve orientation of a bootom edge
193 * \param meshDS - mesh DS
194 * \param columnsMap - node columns map of side face
195 * \param bottomEdge - the bootom edge
196 * \param sideFaceID - side face in-block ID
197 * \retval bool - true if orienation coinside with in-block froward orienation
199 static bool IsForwardEdge(SMESHDS_Mesh* meshDS,
200 const TParam2ColumnMap& columnsMap,
201 const TopoDS_Edge & bottomEdge,
202 const int sideFaceID);
204 * \brief Find wall faces by bottom edges
205 * \param mesh - the mesh
206 * \param mainShape - the prism
207 * \param bottomFace - the bottom face
208 * \param bottomEdges - edges bounding the bottom face
209 * \param wallFaces - faces list to fill in
211 static bool GetWallFaces( SMESH_Mesh* mesh,
212 const TopoDS_Shape & mainShape,
213 const TopoDS_Shape & bottomFace,
214 const std::list< TopoDS_Edge >& bottomEdges,
215 std::list< TopoDS_Face >& wallFaces);
219 // --------------------------------------------------------------------
221 * \brief Class representing a part of a geom face or
222 * a union of seleral faces. Or just an ordinary geom face
224 * It's parametrization is within [0,1] range.
225 * It redefines Adaptor3d_Surface::Value(U,V) where U and V are within [0,1]
227 // --------------------------------------------------------------------
228 class TSideFace: public Adaptor3d_Surface
230 int myID; //!< in-block ID
231 // map used to find out real UV by it's normalized UV
232 TParam2ColumnMap* myParamToColumnMap;
233 BRepAdaptor_Surface mySurface;
234 TopoDS_Edge myBaseEdge;
235 // first and last normalized params and orientaion for each component or it-self
236 vector< pair< double, double> > myParams;
238 vector< TSideFace* > myComponents;
239 SMESH_MesherHelper * myHelper;
241 TSideFace( SMESH_MesherHelper* helper,
243 const TopoDS_Face& face,
244 const TopoDS_Edge& baseEdge,
245 TParam2ColumnMap* columnsMap,
246 const double first = 0.0,
247 const double last = 1.0);
248 TSideFace( const std::vector< TSideFace* >& components,
249 const std::vector< pair< double, double> > & params);
250 TSideFace( const TSideFace& other );
252 bool IsComplex() const
253 { return ( NbComponents() > 0 || myParams[0].first != 0. || myParams[0].second != 1. ); }
254 int FaceID() const { return myID; }
255 TParam2ColumnMap* GetColumns() const { return myParamToColumnMap; }
256 gp_XY GetNodeUV(const TopoDS_Face& F, const SMDS_MeshNode* n) const
257 { return myHelper->GetNodeUV( F, n ); }
258 const TopoDS_Edge & BaseEdge() const { return myBaseEdge; }
259 int ColumnHeight() const {
260 if ( NbComponents() ) return GetComponent(0)->GetColumns()->begin()->second.size();
261 else return GetColumns()->begin()->second.size(); }
262 double GetColumns(const double U, TParam2ColumnIt & col1, TParam2ColumnIt& col2 ) const;
263 int NbComponents() const { return myComponents.size(); }
264 TSideFace* GetComponent(const int i) const { return myComponents.at( i ); }
265 void SetComponent(const int i, TSideFace* c)
266 { if ( myComponents[i] ) delete myComponents[i]; myComponents[i]=c; }
267 TSideFace* GetComponent(const double U, double& localU) const;
268 bool IsForward() const { return myIsForward; }
269 // boundary geometry for a face
270 Adaptor3d_Surface* Surface() const { return new TSideFace( *this ); }
271 bool GetPCurves(Adaptor2d_Curve2d* pcurv[4]) const;
272 Adaptor2d_Curve2d* HorizPCurve(const bool isTop, const TopoDS_Face& horFace) const;
273 Adaptor3d_Curve* HorizCurve(const bool isTop) const;
274 Adaptor3d_Curve* VertiCurve(const bool isMax) const;
275 TopoDS_Edge GetEdge( const int edge ) const;
276 int InsertSubShapes( TBlockShapes& shapeMap ) const;
277 // redefine Adaptor methods
278 gp_Pnt Value(const Standard_Real U,const Standard_Real V) const;
281 // --------------------------------------------------------------------
283 * \brief Class emulating geometry of a vertical edge
285 // --------------------------------------------------------------------
286 class TVerticalEdgeAdaptor: public Adaptor3d_Curve
288 const TNodeColumn* myNodeColumn;
290 TVerticalEdgeAdaptor( const TParam2ColumnMap* columnsMap, const double parameter );
291 gp_Pnt Value(const Standard_Real U) const;
292 Standard_Real FirstParameter() const { return 0; }
293 Standard_Real LastParameter() const { return 1; }
296 // --------------------------------------------------------------------
298 * \brief Class emulating geometry of a hirizontal edge
300 // --------------------------------------------------------------------
301 class THorizontalEdgeAdaptor: public Adaptor3d_Curve
303 const TSideFace* mySide;
306 THorizontalEdgeAdaptor( const TSideFace* sideFace, const bool isTop)
307 :mySide(sideFace), myV( isTop ? 1.0 : 0.0 ) {}
308 gp_Pnt Value(const Standard_Real U) const;
309 Standard_Real FirstParameter() const { return 0; }
310 Standard_Real LastParameter() const { return 1; }
313 // --------------------------------------------------------------------
315 * \brief Class emulating pcurve on a hirizontal face
317 // --------------------------------------------------------------------
318 class TPCurveOnHorFaceAdaptor: public Adaptor2d_Curve2d
320 const TSideFace* mySide;
324 TPCurveOnHorFaceAdaptor( const TSideFace* sideFace,
326 const TopoDS_Face& horFace)
327 : mySide(sideFace), myFace(horFace), myZ(isTop ? mySide->ColumnHeight() - 1 : 0 ) {}
328 gp_Pnt2d Value(const Standard_Real U) const;
329 Standard_Real FirstParameter() const { return 0; }
330 Standard_Real LastParameter() const { return 1; }
332 // --------------------------------------------------------------------
335 SMESH_MesherHelper* myHelper;
336 TBlockShapes myShapeIDMap;
338 // container of 4 side faces
340 // node columns for each base edge
341 vector< TParam2ColumnMap > myParam2ColumnMaps;
342 // to find a column for a node by edge SMESHDS Index
343 map< int, pair< TParam2ColumnMap*, bool > > myShapeIndex2ColumnMap;
346 //vector< SMESH_subMesh* > mySubMeshesVec; // submesh by in-block id
349 // =============================================
351 * \brief Algo building prisms on a prism shape
353 // =============================================
355 class StdMeshers_Prism_3D: public SMESH_3D_Algo
358 StdMeshers_Prism_3D(int hypId, int studyId, SMESH_Gen* gen);
359 virtual ~StdMeshers_Prism_3D();
361 virtual bool CheckHypothesis(SMESH_Mesh& aMesh,
362 const TopoDS_Shape& aShape,
363 SMESH_Hypothesis::Hypothesis_Status& aStatus);
365 virtual bool Compute(SMESH_Mesh& aMesh, const TopoDS_Shape& aShape);
368 * \brief Enable removal of quadrangles from the bottom face and
369 * triangles creation there by projection from the top
370 * (sole face meshed with triangles is considered to be a bottom one).
371 * If there are two faces with triangles, triangles must
372 * be of the same topology, else the algo fails.
373 * The method must be called before Compute()
375 void ProjectTriangles() { myProjectTriangles = true; }
378 * \brief Create prisms
379 * \param nodeColumns - columns of nodes generated from nodes of a mesh face
380 * \param helper - helper initialized by mesh and shape to add prisms to
382 static void AddPrisms( vector<const TNodeColumn*> & nodeColumns,
383 SMESH_MesherHelper* helper);
388 * \brief Find correspondence between bottom and top nodes.
389 * If elements on the bottom and top faces are topologically different,
390 * and projection is possible and allowed, perform the projection
391 * \retval bool - is a success or not
393 bool assocOrProjBottom2Top();
396 * \brief Remove quadrangles from the top face and
397 * create triangles there by projection from the bottom
398 * \retval bool - a success or not
400 bool projectBottomToTop();
403 * \brief Set projection coordinates of a node to a face and it's subshapes
404 * \param faceID - the face given by in-block ID
405 * \param params - node normalized parameters
406 * \retval bool - is a success
408 bool setFaceAndEdgesXYZ( const int faceID, const gp_XYZ& params, int z );
412 bool myProjectTriangles;
414 StdMeshers_PrismAsBlock myBlock;
415 SMESH_MesherHelper* myHelper;
417 vector<gp_XYZ> myShapeXYZ; // point on each sub-shape
419 // map of bottom nodes to the column of nodes above them
420 // (the column includes the bottom node)
421 typedef std::map< TNode, TNodeColumn > TNode2ColumnMap;
422 TNode2ColumnMap myBotToColumnMap;