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_StdMeshers.hxx"
32 #include "SMESH_3D_Algo.hxx"
33 #include "SMDS_TypeOfPosition.hxx"
34 #include "SMDS_MeshNode.hxx"
35 #include "SMESH_Block.hxx"
36 #include "SMESH_Mesh.hxx"
37 #include "SMESHDS_Mesh.hxx"
38 #include "SMESH_subMesh.hxx"
39 #include "SMESH_MesherHelper.hxx"
43 #include <Adaptor3d_Curve.hxx>
44 #include <Adaptor3d_Surface.hxx>
45 #include <Adaptor2d_Curve2d.hxx>
46 #include <BRepAdaptor_Surface.hxx>
47 #include <TopTools_IndexedMapOfOrientedShape.hxx>
51 class SMESHDS_SubMesh;
56 //typedef std::map<const SMDS_MeshNode*, const SMDS_MeshNode*> TNodeNodeMap;
57 typedef std::vector<const SMDS_MeshNode* > TNodeColumn;
59 // map of bottom nodes to the column of nodes above them
60 // (the column includes the bottom nodes)
61 typedef std::map< TNode, TNodeColumn > TNode2ColumnMap;
62 typedef std::map< double, TNodeColumn > TParam2ColumnMap;
63 typedef std::map< double, TNodeColumn >::const_iterator TParam2ColumnIt;
65 typedef TopTools_IndexedMapOfOrientedShape TBlockShapes;
67 // ===============================================
69 * \brief Structure containing node relative data
71 // ===============================================
75 const SMDS_MeshNode* myNode;
78 gp_XYZ GetCoords() const { return gp_XYZ( myNode->X(), myNode->Y(), myNode->Z() ); }
79 gp_XYZ GetParams() const { return myParams; }
80 gp_XYZ& ChangeParams() { return myParams; }
81 SMDS_TypeOfPosition GetPositionType() const
82 { return myNode ? myNode->GetPosition()->GetTypeOfPosition() : SMDS_TOP_UNSPEC; }
84 TNode(const SMDS_MeshNode* node = 0): myNode(node) {}
85 bool operator < (const TNode& other) const { return myNode < other.myNode; }
88 // ===============================================================
90 * \brief Tool analyzing and giving access to a prism geometry
91 * treating it like a block, i.e. the four side faces are
92 * emulated by division/uniting of missing/excess faces.
93 * It also manage associations between block subshapes and a mesh.
95 // ===============================================================
97 class STDMESHERS_EXPORT StdMeshers_PrismAsBlock: public SMESH_Block
101 * \brief Constructor. Initialization is needed
103 StdMeshers_PrismAsBlock();
105 ~StdMeshers_PrismAsBlock();
108 * \brief Initialization.
109 * \param helper - helper loaded with mesh and 3D shape
110 * \param shape3D - a closed shell or solid
111 * \retval bool - false if a mesh or a shape are KO
113 * Analyse shape geometry and mesh.
114 * If there are triangles on one of faces, it becomes 'bottom'
116 bool Init(SMESH_MesherHelper* helper, const TopoDS_Shape& shape3D);
119 * \brief Return number of nodes on every vertical edge
120 * \retval int - number of nodes including end nodes
122 int VerticalSize() const { return myParam2ColumnMaps[0].begin()->second.size(); }
124 bool HasNotQuadElemOnTop() const { return myNotQuadOnTop; }
127 * \brief Return pointer to column of nodes
128 * \param node - bottom node from which the returned column goes up
129 * \retval const TNodeColumn* - the found column
131 const TNodeColumn* GetNodeColumn(const SMDS_MeshNode* node) const;
134 * \brief Return TParam2ColumnMap for a base edge
135 * \param baseEdgeID - base edge SMESHDS Index
136 * \param isReverse - columns in-block orientation
137 * \retval const TParam2ColumnMap& - map
139 const TParam2ColumnMap& GetParam2ColumnMap(const int baseEdgeID,
142 std::pair< TParam2ColumnMap*, bool > & col_frw =
143 myShapeIndex2ColumnMap[ baseEdgeID ];
144 isReverse = !col_frw.second;
145 return * col_frw.first;
149 * \brief Return pointer to mesh
150 * \retval SMESH_Mesh - mesh
152 SMESH_Mesh* Mesh() const { return myHelper->GetMesh(); }
155 * \brief Return pointer to mesh DS
156 * \retval SMESHDS_Mesh - mesh DS
158 SMESHDS_Mesh* MeshDS() const { return Mesh()->GetMeshDS(); }
161 * \brief Return submesh of a shape
162 * \param shapeID - shape given by in-block index
163 * \retval SMESH_subMesh* - found submesh
165 SMESH_subMesh* SubMesh(const int shapeID) const
166 { return Mesh()->GetSubMesh( Shape( shapeID )); }
169 * \brief Return submesh DS of a shape
170 * \param shapeID - shape given by in-block index
171 * \retval SMESHDS_SubMesh* - found submesh DS
173 SMESHDS_SubMesh* SubMeshDS(const int shapeID) const
174 { return SubMesh(shapeID)->GetSubMeshDS(); }
177 * \brief Return a in-block shape
178 * \param shapeID - shape given by in-block index
179 * \retval SMESHDS_SubMesh* - found submesh
181 const TopoDS_Shape& Shape(const int shapeID) const
182 { return myShapeIDMap( shapeID ); }
185 * \brief Return in-block ID of a shape
186 * \param shape - block subshape
187 * \retval int - ID or zero if the shape has no ID
189 int ShapeID(const TopoDS_Shape& shape) const
190 { return myShapeIDMap.FindIndex( shape ); }
193 * \brief Check curve orientation of a bootom edge
194 * \param meshDS - mesh DS
195 * \param columnsMap - node columns map of side face
196 * \param bottomEdge - the bootom edge
197 * \param sideFaceID - side face in-block ID
198 * \retval bool - true if orienation coinside with in-block froward orienation
200 static bool IsForwardEdge(SMESHDS_Mesh* meshDS,
201 const TParam2ColumnMap& columnsMap,
202 const TopoDS_Edge & bottomEdge,
203 const int sideFaceID);
205 * \brief Find wall faces by bottom edges
206 * \param mesh - the mesh
207 * \param mainShape - the prism
208 * \param bottomFace - the bottom face
209 * \param bottomEdges - edges bounding the bottom face
210 * \param wallFaces - faces list to fill in
212 static bool GetWallFaces( SMESH_Mesh* mesh,
213 const TopoDS_Shape & mainShape,
214 const TopoDS_Shape & bottomFace,
215 const std::list< TopoDS_Edge >& bottomEdges,
216 std::list< TopoDS_Face >& wallFaces);
220 // --------------------------------------------------------------------
222 * \brief Class representing a part of a geom face or
223 * a union of seleral faces. Or just an ordinary geom face
225 * It's parametrization is within [0,1] range.
226 * It redefines Adaptor3d_Surface::Value(U,V) where U and V are within [0,1]
228 // --------------------------------------------------------------------
229 class TSideFace: public Adaptor3d_Surface
231 int myID; //!< in-block ID
232 // map used to find out real UV by it's normalized UV
233 TParam2ColumnMap* myParamToColumnMap;
234 BRepAdaptor_Surface mySurface;
235 TopoDS_Edge myBaseEdge;
236 // first and last normalized params and orientaion for each component or it-self
237 vector< pair< double, double> > myParams;
239 vector< TSideFace* > myComponents;
240 SMESH_MesherHelper * myHelper;
242 TSideFace( SMESH_MesherHelper* helper,
244 const TopoDS_Face& face,
245 const TopoDS_Edge& baseEdge,
246 TParam2ColumnMap* columnsMap,
247 const double first = 0.0,
248 const double last = 1.0);
249 TSideFace( const std::vector< TSideFace* >& components,
250 const std::vector< pair< double, double> > & params);
251 TSideFace( const TSideFace& other );
253 bool IsComplex() const
254 { return ( NbComponents() > 0 || myParams[0].first != 0. || myParams[0].second != 1. ); }
255 int FaceID() const { return myID; }
256 TParam2ColumnMap* GetColumns() const { return myParamToColumnMap; }
257 gp_XY GetNodeUV(const TopoDS_Face& F, const SMDS_MeshNode* n) const
258 { return myHelper->GetNodeUV( F, n ); }
259 const TopoDS_Edge & BaseEdge() const { return myBaseEdge; }
260 int ColumnHeight() const {
261 if ( NbComponents() ) return GetComponent(0)->GetColumns()->begin()->second.size();
262 else return GetColumns()->begin()->second.size(); }
263 double GetColumns(const double U, TParam2ColumnIt & col1, TParam2ColumnIt& col2 ) const;
264 int NbComponents() const { return myComponents.size(); }
265 TSideFace* GetComponent(const int i) const { return myComponents.at( i ); }
266 void SetComponent(const int i, TSideFace* c)
267 { if ( myComponents[i] ) delete myComponents[i]; myComponents[i]=c; }
268 TSideFace* GetComponent(const double U, double& localU) const;
269 bool IsForward() const { return myIsForward; }
270 // boundary geometry for a face
271 Adaptor3d_Surface* Surface() const { return new TSideFace( *this ); }
272 bool GetPCurves(Adaptor2d_Curve2d* pcurv[4]) const;
273 Adaptor2d_Curve2d* HorizPCurve(const bool isTop, const TopoDS_Face& horFace) const;
274 Adaptor3d_Curve* HorizCurve(const bool isTop) const;
275 Adaptor3d_Curve* VertiCurve(const bool isMax) const;
276 TopoDS_Edge GetEdge( const int edge ) const;
277 int InsertSubShapes( TBlockShapes& shapeMap ) const;
278 // redefine Adaptor methods
279 gp_Pnt Value(const Standard_Real U,const Standard_Real V) const;
282 // --------------------------------------------------------------------
284 * \brief Class emulating geometry of a vertical edge
286 // --------------------------------------------------------------------
287 class STDMESHERS_EXPORT TVerticalEdgeAdaptor: public Adaptor3d_Curve
289 const TNodeColumn* myNodeColumn;
291 TVerticalEdgeAdaptor( const TParam2ColumnMap* columnsMap, const double parameter );
292 gp_Pnt Value(const Standard_Real U) const;
293 Standard_Real FirstParameter() const { return 0; }
294 Standard_Real LastParameter() const { return 1; }
297 // --------------------------------------------------------------------
299 * \brief Class emulating geometry of a hirizontal edge
301 // --------------------------------------------------------------------
302 class STDMESHERS_EXPORT THorizontalEdgeAdaptor: public Adaptor3d_Curve
304 const TSideFace* mySide;
307 THorizontalEdgeAdaptor( const TSideFace* sideFace, const bool isTop)
308 :mySide(sideFace), myV( isTop ? 1.0 : 0.0 ) {}
309 gp_Pnt Value(const Standard_Real U) const;
310 Standard_Real FirstParameter() const { return 0; }
311 Standard_Real LastParameter() const { return 1; }
314 // --------------------------------------------------------------------
316 * \brief Class emulating pcurve on a hirizontal face
318 // --------------------------------------------------------------------
319 class STDMESHERS_EXPORT TPCurveOnHorFaceAdaptor: public Adaptor2d_Curve2d
321 const TSideFace* mySide;
325 TPCurveOnHorFaceAdaptor( const TSideFace* sideFace,
327 const TopoDS_Face& horFace)
328 : mySide(sideFace), myFace(horFace), myZ(isTop ? mySide->ColumnHeight() - 1 : 0 ) {}
329 gp_Pnt2d Value(const Standard_Real U) const;
330 Standard_Real FirstParameter() const { return 0; }
331 Standard_Real LastParameter() const { return 1; }
333 // --------------------------------------------------------------------
336 SMESH_MesherHelper* myHelper;
337 TBlockShapes myShapeIDMap;
339 // container of 4 side faces
341 // node columns for each base edge
342 vector< TParam2ColumnMap > myParam2ColumnMaps;
343 // to find a column for a node by edge SMESHDS Index
344 map< int, pair< TParam2ColumnMap*, bool > > myShapeIndex2ColumnMap;
347 //vector< SMESH_subMesh* > mySubMeshesVec; // submesh by in-block id
350 // =============================================
352 * \brief Algo building prisms on a prism shape
354 // =============================================
356 class STDMESHERS_EXPORT StdMeshers_Prism_3D: public SMESH_3D_Algo
359 StdMeshers_Prism_3D(int hypId, int studyId, SMESH_Gen* gen);
360 virtual ~StdMeshers_Prism_3D();
362 virtual bool CheckHypothesis(SMESH_Mesh& aMesh,
363 const TopoDS_Shape& aShape,
364 SMESH_Hypothesis::Hypothesis_Status& aStatus);
366 virtual bool Compute(SMESH_Mesh& aMesh, const TopoDS_Shape& aShape);
369 * \brief Enable removal of quadrangles from the bottom face and
370 * triangles creation there by projection from the top
371 * (sole face meshed with triangles is considered to be a bottom one).
372 * If there are two faces with triangles, triangles must
373 * be of the same topology, else the algo fails.
374 * The method must be called before Compute()
376 void ProjectTriangles() { myProjectTriangles = true; }
379 * \brief Create prisms
380 * \param nodeColumns - columns of nodes generated from nodes of a mesh face
381 * \param helper - helper initialized by mesh and shape to add prisms to
383 static void AddPrisms( vector<const TNodeColumn*> & nodeColumns,
384 SMESH_MesherHelper* helper);
389 * \brief Find correspondence between bottom and top nodes.
390 * If elements on the bottom and top faces are topologically different,
391 * and projection is possible and allowed, perform the projection
392 * \retval bool - is a success or not
394 bool assocOrProjBottom2Top();
397 * \brief Remove quadrangles from the top face and
398 * create triangles there by projection from the bottom
399 * \retval bool - a success or not
401 bool projectBottomToTop();
404 * \brief Set projection coordinates of a node to a face and it's subshapes
405 * \param faceID - the face given by in-block ID
406 * \param params - node normalized parameters
407 * \retval bool - is a success
409 bool setFaceAndEdgesXYZ( const int faceID, const gp_XYZ& params, int z );
413 bool myProjectTriangles;
415 StdMeshers_PrismAsBlock myBlock;
416 SMESH_MesherHelper* myHelper;
418 vector<gp_XYZ> myShapeXYZ; // point on each sub-shape
420 // map of bottom nodes to the column of nodes above them
421 // (the column includes the bottom node)
422 typedef std::map< TNode, TNodeColumn > TNode2ColumnMap;
423 TNode2ColumnMap myBotToColumnMap;