1 // Copyright (C) 2007-2015 CEA/DEN, EDF R&D, OPEN CASCADE
3 // Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
4 // CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
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9 // version 2.1 of the License, or (at your option) any later version.
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14 // Lesser General Public License for more details.
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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
23 // File: SMESH_MesherHelper.hxx
24 // Created: 15.02.06 14:48:09
25 // Author: Sergey KUUL
27 #ifndef SMESH_MesherHelper_HeaderFile
28 #define SMESH_MesherHelper_HeaderFile
30 #include "SMESH_SMESH.hxx"
32 #include "SMESH_MeshEditor.hxx" // needed for many meshers
33 #include <SMDS_MeshNode.hxx>
34 #include <SMDS_QuadraticEdge.hxx>
36 #include <Geom_Surface.hxx>
37 #include <ShapeAnalysis_Surface.hxx>
38 #include <TopoDS_Face.hxx>
39 #include <TopoDS_Shape.hxx>
40 #include <gp_Pnt2d.hxx>
45 class GeomAPI_ProjectPointOnSurf;
46 class GeomAPI_ProjectPointOnCurve;
47 class SMESH_ProxyMesh;
49 typedef std::map<SMESH_TLink, const SMDS_MeshNode*> TLinkNodeMap;
50 typedef std::map<SMESH_TLink, const SMDS_MeshNode*>::iterator ItTLinkNode;
52 typedef SMDS_Iterator<const TopoDS_Shape*> PShapeIterator;
53 typedef boost::shared_ptr< PShapeIterator > PShapeIteratorPtr;
55 typedef std::vector<const SMDS_MeshNode* > TNodeColumn;
56 typedef std::map< double, TNodeColumn > TParam2ColumnMap;
58 typedef gp_XY (*xyFunPtr)(const gp_XY& uv1, const gp_XY& uv2);
60 //=======================================================================
62 * \brief It helps meshers to add elements and provides other utilities
64 * - It allows meshers not to care about creation of medium nodes
65 * when filling a quadratic mesh. Helper does it itself.
66 * It defines order of elements to create when IsQuadraticSubMesh()
68 * - It provides information on a shape it is initialized with:
69 * periodicity, presence of singularities etc.
72 //=======================================================================
74 class SMESH_EXPORT SMESH_MesherHelper
77 // ---------- PUBLIC UTILITIES ----------
80 * \brief Returns true if all elements of a sub-mesh are of same shape
81 * \param smDS - sub-mesh to check elements of
82 * \param shape - expected shape of elements
83 * \param nullSubMeshRes - result value for the case of smDS == NULL
84 * \retval bool - check result
86 static bool IsSameElemGeometry(const SMESHDS_SubMesh* smDS,
87 SMDSAbs_GeometryType shape,
88 const bool nullSubMeshRes = true);
91 * \brief Load nodes bound to face into a map of node columns
92 * \param theParam2ColumnMap - map of node columns to fill
93 * \param theFace - the face on which nodes are searched for
94 * \param theBaseSide - the edges holding nodes on which columns' bases
95 * \param theMesh - the mesh containing nodes
96 * \retval bool - false if something is wrong
98 * The key of the map is a normalized parameter of each
99 * base node on theBaseSide. Edges in theBaseSide must be sequenced.
100 * This method works in supposition that nodes on the face
101 * forms a structured grid and elements can be quardrangles or triangles
103 static bool LoadNodeColumns(TParam2ColumnMap & theParam2ColumnMap,
104 const TopoDS_Face& theFace,
105 const std::list<TopoDS_Edge>& theBaseSide,
106 SMESHDS_Mesh* theMesh,
107 SMESH_ProxyMesh* theProxyMesh=0);
109 * \brief Variant of LoadNodeColumns() above with theBaseSide given by one edge
111 static bool LoadNodeColumns(TParam2ColumnMap & theParam2ColumnMap,
112 const TopoDS_Face& theFace,
113 const TopoDS_Edge& theBaseEdge,
114 SMESHDS_Mesh* theMesh,
115 SMESH_ProxyMesh* theProxyMesh=0);
117 * \brief Return true if 2D mesh on FACE is structured
119 static bool IsStructured( SMESH_subMesh* faceSM );
122 * \brief Return true if 2D mesh on FACE is distored
124 static bool IsDistorted2D( SMESH_subMesh* faceSM, bool checkUV=false );
127 * \brief Returns true if given node is medium
128 * \param n - node to check
129 * \param typeToCheck - type of elements containing the node to ask about node status
130 * \retval bool - check result
132 static bool IsMedium(const SMDS_MeshNode* node,
133 const SMDSAbs_ElementType typeToCheck = SMDSAbs_All);
135 * \brief Return support shape of a node
136 * \param node - the node
137 * \param meshDS - mesh DS
138 * \retval TopoDS_Shape - found support shape
139 * \sa SMESH_Algo::VertexNode( const TopoDS_Vertex&, SMESHDS_Mesh* )
141 static TopoDS_Shape GetSubShapeByNode(const SMDS_MeshNode* node,
142 const SMESHDS_Mesh* meshDS);
145 * \brief Return a valid node index, fixing the given one if necessary
146 * \param ind - node index
147 * \param nbNodes - total nb of nodes
148 * \retval int - valid node index
150 static inline int WrapIndex(int ind, const int nbNodes) {
151 return (( ind %= nbNodes ) < 0 ) ? ind + nbNodes : ind;
155 * \brief Return UV of a point inside a quadrilateral FACE by it's
156 * normalized parameters within a unit quadrangle and the
157 * corresponding projections on sub-shapes of the real-world FACE.
158 * The used calculation method is called Trans-Finite Interpolation (TFI).
159 * \param x,y - normalized parameters that should be in range [0,1]
160 * \param a0,a1,a2,a3 - UV of VERTEXes of the FACE == projections on VERTEXes
161 * \param p0,p1,p2,p3 - UV of the point projections on EDGEs of the FACE
162 * \return gp_XY - UV of the point on the FACE
164 * Y ^ Order of those UV in the FACE is as follows.
172 * o---x-----o ----> X
175 inline static gp_XY calcTFI(double x, double y,
176 const gp_XY& a0,const gp_XY& a1,const gp_XY& a2,const gp_XY& a3,
177 const gp_XY& p0,const gp_XY& p1,const gp_XY& p2,const gp_XY& p3);
180 * \brief Same as "gp_XY calcTFI(...)" but in 3D
182 inline static gp_XYZ calcTFI(double x, double y,
183 const gp_XYZ& a0,const gp_XYZ& a1,const gp_XYZ& a2,const gp_XYZ& a3,
184 const gp_XYZ& p0,const gp_XYZ& p1,const gp_XYZ& p2,const gp_XYZ& p3);
186 * \brief Count nb of sub-shapes
187 * \param shape - the shape
188 * \param type - the type of sub-shapes to count
189 * \param ignoreSame - if true, use map not to count same shapes, esle use explorer
190 * \retval int - the calculated number
192 static int Count(const TopoDS_Shape& shape,
193 const TopAbs_ShapeEnum type,
194 const bool ignoreSame);
197 * \brief Return number of unique ancestors of the shape
199 static int NbAncestors(const TopoDS_Shape& shape,
200 const SMESH_Mesh& mesh,
201 TopAbs_ShapeEnum ancestorType=TopAbs_SHAPE);
203 * \brief Return iterator on ancestors of the given type
205 static PShapeIteratorPtr GetAncestors(const TopoDS_Shape& shape,
206 const SMESH_Mesh& mesh,
207 TopAbs_ShapeEnum ancestorType);
209 * \brief Find a common ancestor, of the given type, of two shapes
211 static TopoDS_Shape GetCommonAncestor(const TopoDS_Shape& shape1,
212 const TopoDS_Shape& shape2,
213 const SMESH_Mesh& mesh,
214 TopAbs_ShapeEnum ancestorType);
216 * \brief Return orientation of sub-shape in the main shape
218 static TopAbs_Orientation GetSubShapeOri(const TopoDS_Shape& shape,
219 const TopoDS_Shape& subShape);
221 static bool IsSubShape( const TopoDS_Shape& shape, const TopoDS_Shape& mainShape );
223 static bool IsSubShape( const TopoDS_Shape& shape, SMESH_Mesh* aMesh );
225 static bool IsBlock( const TopoDS_Shape& shape );
227 static double MaxTolerance( const TopoDS_Shape& shape );
229 static double GetAngle( const TopoDS_Edge & E1, const TopoDS_Edge & E2,
230 const TopoDS_Face & F, const TopoDS_Vertex & V,
231 gp_Vec* faceNormal=0);
233 static bool IsClosedEdge( const TopoDS_Edge& anEdge );
235 static TopoDS_Vertex IthVertex( const bool is2nd, TopoDS_Edge anEdge, const bool CumOri=true );
237 static TopAbs_ShapeEnum GetGroupType(const TopoDS_Shape& group,
238 const bool avoidCompound=false);
240 static TopoDS_Shape GetShapeOfHypothesis( const SMESHDS_Hypothesis * hyp,
241 const TopoDS_Shape& shape,
246 // ---------- PUBLIC INSTANCE METHODS ----------
249 SMESH_MesherHelper(SMESH_Mesh& theMesh);
251 SMESH_Gen* GetGen() const { return GetMesh()->GetGen(); }
253 SMESH_Mesh* GetMesh() const { return myMesh; }
255 SMESHDS_Mesh* GetMeshDS() const { return GetMesh()->GetMeshDS(); }
258 * Check submesh for given shape: if all elements on this shape are quadratic,
259 * quadratic elements will be created. Also fill myTLinkNodeMap
261 bool IsQuadraticSubMesh(const TopoDS_Shape& theShape);
264 * \brief Set order of elements to create without calling IsQuadraticSubMesh()
266 void SetIsQuadratic(const bool theBuildQuadratic)
267 { myCreateQuadratic = theBuildQuadratic; }
270 * \brief Set myCreateBiQuadratic flag
272 void SetIsBiQuadratic(const bool theBuildBiQuadratic)
273 { myCreateBiQuadratic = theBuildBiQuadratic; }
276 * \brief Return myCreateQuadratic flag
278 bool GetIsQuadratic() const { return myCreateQuadratic; }
281 * \brief Find out elements orientation on a geometrical face
283 bool IsReversedSubMesh (const TopoDS_Face& theFace);
286 * \brief Return myCreateBiQuadratic flag
288 bool GetIsBiQuadratic() const { return myCreateBiQuadratic; }
291 * \brief Move medium nodes of faces and volumes to fix distorted elements
292 * \param error - container of fixed distorted elements
293 * \param volumeOnly - fix nodes on geom faces or not if the shape is solid
295 void FixQuadraticElements(SMESH_ComputeErrorPtr& error, bool volumeOnly=true);
298 * \brief To set created elements on the shape set by IsQuadraticSubMesh()
299 * or the next methods. By defaul elements are set on the shape if
300 * a mesh has no shape to be meshed
302 bool SetElementsOnShape(bool toSet)
303 { bool res = mySetElemOnShape; mySetElemOnShape = toSet; return res; }
306 * \brief Set shape to make elements on without calling IsQuadraticSubMesh()
308 void SetSubShape(const int subShapeID);//!==SMESHDS_Mesh::ShapeToIndex(shape)
309 void SetSubShape(const TopoDS_Shape& subShape);
311 * \brief Return ID of the shape set by IsQuadraticSubMesh() or SetSubShape()
312 * \retval int - shape index in SMESHDS
314 int GetSubShapeID() const { return myShapeID; }
316 * \brief Return the shape set by IsQuadraticSubMesh() or SetSubShape()
318 const TopoDS_Shape& GetSubShape() const { return myShape; }
321 * Creates a node (!Note ID before u=0.,v0.)
323 SMDS_MeshNode* AddNode(double x, double y, double z, int ID = 0, double u=0., double v=0.);
325 * Creates quadratic or linear edge
327 SMDS_MeshEdge* AddEdge(const SMDS_MeshNode* n1,
328 const SMDS_MeshNode* n2,
330 const bool force3d = true);
332 * Creates quadratic or linear triangle
334 SMDS_MeshFace* AddFace(const SMDS_MeshNode* n1,
335 const SMDS_MeshNode* n2,
336 const SMDS_MeshNode* n3,
338 const bool force3d = false);
340 * Creates bi-quadratic, quadratic or linear quadrangle
342 SMDS_MeshFace* AddFace(const SMDS_MeshNode* n1,
343 const SMDS_MeshNode* n2,
344 const SMDS_MeshNode* n3,
345 const SMDS_MeshNode* n4,
347 const bool force3d = false);
349 * Creates polygon, with additional nodes in quadratic mesh
351 SMDS_MeshFace* AddPolygonalFace (const std::vector<const SMDS_MeshNode*>& nodes,
353 const bool force3d = false);
355 * Creates quadratic or linear tetrahedron
357 SMDS_MeshVolume* AddVolume(const SMDS_MeshNode* n1,
358 const SMDS_MeshNode* n2,
359 const SMDS_MeshNode* n3,
360 const SMDS_MeshNode* n4,
362 const bool force3d = true);
364 * Creates quadratic or linear pyramid
366 SMDS_MeshVolume* AddVolume(const SMDS_MeshNode* n1,
367 const SMDS_MeshNode* n2,
368 const SMDS_MeshNode* n3,
369 const SMDS_MeshNode* n4,
370 const SMDS_MeshNode* n5,
372 const bool force3d = true);
374 * Creates quadratic or linear pentahedron
376 SMDS_MeshVolume* AddVolume(const SMDS_MeshNode* n1,
377 const SMDS_MeshNode* n2,
378 const SMDS_MeshNode* n3,
379 const SMDS_MeshNode* n4,
380 const SMDS_MeshNode* n5,
381 const SMDS_MeshNode* n6,
383 const bool force3d = true);
385 * Creates bi-quadratic, quadratic or linear hexahedron
387 SMDS_MeshVolume* AddVolume(const SMDS_MeshNode* n1,
388 const SMDS_MeshNode* n2,
389 const SMDS_MeshNode* n3,
390 const SMDS_MeshNode* n4,
391 const SMDS_MeshNode* n5,
392 const SMDS_MeshNode* n6,
393 const SMDS_MeshNode* n7,
394 const SMDS_MeshNode* n8,
396 bool force3d = true);
399 * Creates LINEAR!!!!!!!!! octahedron
401 SMDS_MeshVolume* AddVolume(const SMDS_MeshNode* n1,
402 const SMDS_MeshNode* n2,
403 const SMDS_MeshNode* n3,
404 const SMDS_MeshNode* n4,
405 const SMDS_MeshNode* n5,
406 const SMDS_MeshNode* n6,
407 const SMDS_MeshNode* n7,
408 const SMDS_MeshNode* n8,
409 const SMDS_MeshNode* n9,
410 const SMDS_MeshNode* n10,
411 const SMDS_MeshNode* n11,
412 const SMDS_MeshNode* n12,
414 bool force3d = true);
417 * Creates polyhedron. In quadratic mesh, adds medium nodes
419 SMDS_MeshVolume* AddPolyhedralVolume (const std::vector<const SMDS_MeshNode*>& nodes,
420 const std::vector<int>& quantities,
422 const bool force3d = true);
424 * \brief Enables fixing node parameters on EDGEs and FACEs by
425 * GetNodeU(...,check=true), GetNodeUV(...,check=true), CheckNodeUV() and
426 * CheckNodeU() in case if a node lies on a shape set via SetSubShape().
429 void ToFixNodeParameters(bool toFix);
432 * \brief Return U of the given node on the edge
434 double GetNodeU(const TopoDS_Edge& theEdge,
435 const SMDS_MeshNode* theNode,
436 const SMDS_MeshNode* inEdgeNode=0,
437 bool* check=0) const;
439 * \brief Return node UV on face
440 * \param inFaceNode - a node of element being created located inside a face
441 * \param check - if provided, returns result of UV check that it enforces
443 gp_XY GetNodeUV(const TopoDS_Face& F,
444 const SMDS_MeshNode* n,
445 const SMDS_MeshNode* inFaceNode=0,
446 bool* check=0) const;
448 * \brief Check and fix node UV on a face
449 * \param force - check even if checks of other nodes on this face passed OK
450 * \param distXYZ - returns result distance and point coordinates
451 * \retval bool - false if UV is bad and could not be fixed
453 bool CheckNodeUV(const TopoDS_Face& F,
454 const SMDS_MeshNode* n,
457 const bool force=false,
458 double distXYZ[4]=0) const;
460 * \brief Check and fix node U on an edge
461 * \param force - check even if checks of other nodes on this edge passed OK
462 * \param distXYZ - returns result distance and point coordinates
463 * \retval bool - false if U is bad and could not be fixed
465 bool CheckNodeU(const TopoDS_Edge& E,
466 const SMDS_MeshNode* n,
469 const bool force=false,
470 double distXYZ[4]=0) const;
472 * \brief Return middle UV taking in account surface period
474 static gp_XY GetMiddleUV(const Handle(Geom_Surface)& surface,
478 * \brief Return UV for the central node of a biquadratic triangle
480 static gp_XY GetCenterUV(const gp_XY& uv1,
488 * \brief Define a pointer to wrapper over a function of gp_XY class,
489 * suitable to pass as xyFunPtr to ApplyIn2D().
490 * For exaple gp_XY_FunPtr(Added) defines pointer gp_XY_Added to function
491 * calling gp_XY::Added(gp_XY), which is to be used like following
492 * ApplyIn2D(surf, uv1, uv2, gp_XY_Added)
494 #define gp_XY_FunPtr(meth) \
495 static gp_XY __gpXY_##meth (const gp_XY& uv1, const gp_XY& uv2) { return uv1.meth( uv2 ); } \
496 static xyFunPtr gp_XY_##meth = & __gpXY_##meth
499 * \brief Perform given operation on two 2d points in parameric space of given surface.
500 * It takes into account period of the surface. Use gp_XY_FunPtr macro
501 * to easily define pointer to function of gp_XY class.
503 static gp_XY ApplyIn2D(Handle(Geom_Surface) surface,
507 const bool resultInPeriod=true);
510 * \brief Move node positions on a FACE within surface period
511 * \param [in] face - the FACE
512 * \param [inout] uv - node positions to adjust
513 * \param [in] nbUV - nb of \a uv
515 void AdjustByPeriod( const TopoDS_Face& face, gp_XY uv[], const int nbUV );
518 * \brief Check if inFaceNode argument is necessary for call GetNodeUV(F,..)
519 * \retval bool - return true if the face is periodic
521 * If F is Null, answer about subshape set through IsQuadraticSubMesh() or
524 bool GetNodeUVneedInFaceNode(const TopoDS_Face& F = TopoDS_Face()) const;
527 * \brief Return projector intitialized by given face without location, which is returned
529 GeomAPI_ProjectPointOnSurf& GetProjector(const TopoDS_Face& F,
530 TopLoc_Location& loc,
531 double tol=0 ) const;
533 * \brief Return a cached ShapeAnalysis_Surface of a FACE
535 Handle(ShapeAnalysis_Surface) GetSurface(const TopoDS_Face& F ) const;
538 * \brief Check if shape is a degenerated edge or it's vertex
539 * \param subShape - edge or vertex index in SMESHDS
540 * \retval bool - true if subShape is a degenerated shape
542 * It works only if IsQuadraticSubMesh() or SetSubShape() has been called
544 bool IsDegenShape(const int subShape) const
545 { return myDegenShapeIds.find( subShape ) != myDegenShapeIds.end(); }
547 * \brief Check if the shape set through IsQuadraticSubMesh() or SetSubShape()
548 * has a degenerated edges
549 * \retval bool - true if it has
551 bool HasDegeneratedEdges() const { return !myDegenShapeIds.empty(); }
554 * \brief Check if shape is a seam edge or it's vertex
555 * \param subShape - edge or vertex index in SMESHDS
556 * \retval bool - true if subShape is a seam shape
558 * It works only if IsQuadraticSubMesh() or SetSubShape() has been called.
559 * Seam shape has two 2D alternative represenations on the face
561 bool IsSeamShape(const int subShape) const
562 { return mySeamShapeIds.find( subShape ) != mySeamShapeIds.end(); }
564 * \brief Check if shape is a seam edge or it's vertex
565 * \param subShape - edge or vertex
566 * \retval bool - true if subShape is a seam shape
568 * It works only if IsQuadraticSubMesh() or SetSubShape() has been called.
569 * Seam shape has two 2D alternative represenations on the face
571 bool IsSeamShape(const TopoDS_Shape& subShape) const
572 { return IsSeamShape( GetMeshDS()->ShapeToIndex( subShape )); }
574 * \brief Return true if an edge or a vertex encounters twice in face wire
575 * \param subShape - Id of edge or vertex
577 bool IsRealSeam(const int subShape) const
578 { return mySeamShapeIds.find( -subShape ) != mySeamShapeIds.end(); }
580 * \brief Return true if an edge or a vertex encounters twice in face wire
581 * \param subShape - edge or vertex
583 bool IsRealSeam(const TopoDS_Shape& subShape) const
584 { return IsRealSeam( GetMeshDS()->ShapeToIndex( subShape)); }
586 * \brief Check if the shape set through IsQuadraticSubMesh() or SetSubShape()
587 * has a seam edge, i.e. an edge that has two parametric representations
589 * \retval bool - true if it has
591 bool HasSeam() const { return !mySeamShapeIds.empty(); }
593 * \brief Check if the shape set through IsQuadraticSubMesh() or SetSubShape()
594 * has a seam edge that encounters twice in a wire
595 * \retval bool - true if it has
597 bool HasRealSeam() const { return HasSeam() && ( *mySeamShapeIds.begin() < 0 ); }
599 * \brief Return index of periodic parametric direction of a closed face
600 * \retval int - 1 for U, 2 for V direction
602 int GetPeriodicIndex() const { return myParIndex; }
604 * \brief Return an alternative parameter for a node on seam
606 double GetOtherParam(const double param) const;
609 * \brief Return existing or create new medium nodes between given ones
610 * \param force3d - true means node creation at the middle between the
611 * two given nodes, else node position is found on its
612 * supporting geometrical shape, if any.
613 * \param expectedSupport - shape type corresponding to element being created
614 * , e.g TopAbs_EDGE if SMDSAbs_Edge is created
615 * basing on \a n1 and \a n2
617 const SMDS_MeshNode* GetMediumNode(const SMDS_MeshNode* n1,
618 const SMDS_MeshNode* n2,
620 TopAbs_ShapeEnum expectedSupport=TopAbs_SHAPE);
622 * \brief Return existing or create a new central node for a quardilateral
623 * quadratic face given its 8 nodes.
624 * \param force3d - true means node creation in between the given nodes,
625 * else node position is found on a geometrical face if any.
627 const SMDS_MeshNode* GetCentralNode(const SMDS_MeshNode* n1,
628 const SMDS_MeshNode* n2,
629 const SMDS_MeshNode* n3,
630 const SMDS_MeshNode* n4,
631 const SMDS_MeshNode* n12,
632 const SMDS_MeshNode* n23,
633 const SMDS_MeshNode* n34,
634 const SMDS_MeshNode* n41,
637 * \brief Return existing or create a new central node for a
638 * quadratic triangle given its 6 nodes.
639 * \param force3d - true means node creation in between the given nodes,
640 * else node position is found on a geometrical face if any.
642 const SMDS_MeshNode* GetCentralNode(const SMDS_MeshNode* n1,
643 const SMDS_MeshNode* n2,
644 const SMDS_MeshNode* n3,
645 const SMDS_MeshNode* n12,
646 const SMDS_MeshNode* n23,
647 const SMDS_MeshNode* n31,
650 * \brief Return index and type of the shape (EDGE or FACE only) to set a medium node on
652 std::pair<int, TopAbs_ShapeEnum> GetMediumPos(const SMDS_MeshNode* n1,
653 const SMDS_MeshNode* n2,
654 const bool useCurSubShape=false,
655 TopAbs_ShapeEnum expectedSupport=TopAbs_SHAPE);
657 * \brief Add a link in my data structure
659 void AddTLinkNode(const SMDS_MeshNode* n1,
660 const SMDS_MeshNode* n2,
661 const SMDS_MeshNode* n12);
663 * \brief Add many links in my data structure
665 void AddTLinkNodeMap(const TLinkNodeMap& aMap)
666 { myTLinkNodeMap.insert(aMap.begin(), aMap.end()); }
668 bool AddTLinks(const SMDS_MeshEdge* edge);
669 bool AddTLinks(const SMDS_MeshFace* face);
670 bool AddTLinks(const SMDS_MeshVolume* vol);
673 * Returns myTLinkNodeMap
675 const TLinkNodeMap& GetTLinkNodeMap() const { return myTLinkNodeMap; }
678 * Check mesh without geometry for: if all elements on this shape are quadratic,
679 * quadratic elements will be created.
680 * Used then generated 3D mesh without geometry.
682 enum MType{ LINEAR, QUADRATIC, COMP };
683 MType IsQuadraticMesh();
685 virtual ~SMESH_MesherHelper();
690 * \brief Select UV on either of 2 pcurves of a seam edge, closest to the given UV
691 * \param uv1 - UV on the seam
692 * \param uv2 - UV within a face
693 * \retval gp_Pnt2d - selected UV
695 gp_Pnt2d getUVOnSeam( const gp_Pnt2d& uv1, const gp_Pnt2d& uv2 ) const;
697 const SMDS_MeshNode* getMediumNodeOnComposedWire(const SMDS_MeshNode* n1,
698 const SMDS_MeshNode* n2,
701 double getFaceMaxTol( const TopoDS_Shape& face ) const;
705 // Forbiden copy constructor
706 SMESH_MesherHelper (const SMESH_MesherHelper& theOther);
708 // key of a map of bi-quadratic face to it's central node
709 struct TBiQuad: public std::pair<int, std::pair<int, int> >
711 TBiQuad(const SMDS_MeshNode* n1,
712 const SMDS_MeshNode* n2,
713 const SMDS_MeshNode* n3,
714 const SMDS_MeshNode* n4=0)
720 if ( n4 ) s.insert(n4);
721 TIDSortedNodeSet::iterator n = s.begin();
722 first = (*n++)->GetID();
723 second.first = (*n++)->GetID();
724 second.second = (*n++)->GetID();
728 // maps used during creation of quadratic elements
729 TLinkNodeMap myTLinkNodeMap; // medium nodes on links
730 std::map< TBiQuad, const SMDS_MeshNode* > myMapWithCentralNode; // central nodes of faces
732 std::set< int > myDegenShapeIds;
733 std::set< int > mySeamShapeIds;
734 double myPar1[2], myPar2[2]; // U and V bounds of a closed periodic surface
735 int myParIndex; // bounds' index (1-U, 2-V, 3-both)
737 std::map< int, double > myFaceMaxTol;
739 typedef std::map< int, Handle(ShapeAnalysis_Surface)> TID2Surface;
740 typedef std::map< int, GeomAPI_ProjectPointOnSurf* > TID2ProjectorOnSurf;
741 typedef std::map< int, GeomAPI_ProjectPointOnCurve* > TID2ProjectorOnCurve;
742 mutable TID2Surface myFace2Surface;
743 TID2ProjectorOnSurf myFace2Projector;
744 TID2ProjectorOnCurve myEdge2Projector;
746 TopoDS_Shape myShape;
750 bool myCreateQuadratic;
751 bool myCreateBiQuadratic;
752 bool mySetElemOnShape;
753 bool myFixNodeParameters;
755 std::map< int,bool > myNodePosShapesValidity;
756 bool toCheckPosOnShape(int shapeID ) const;
757 void setPosOnShapeValidity(int shapeID, bool ok ) const;
760 //=======================================================================
762 SMESH_MesherHelper::calcTFI(double x, double y,
763 const gp_XY& a0,const gp_XY& a1,const gp_XY& a2,const gp_XY& a3,
764 const gp_XY& p0,const gp_XY& p1,const gp_XY& p2,const gp_XY& p3)
767 ((1 - y) * p0 + x * p1 + y * p2 + (1 - x) * p3 ) -
768 ((1 - x) * (1 - y) * a0 + x * (1 - y) * a1 + x * y * a2 + (1 - x) * y * a3);
770 //=======================================================================
772 SMESH_MesherHelper::calcTFI(double x, double y,
773 const gp_XYZ& a0,const gp_XYZ& a1,const gp_XYZ& a2,const gp_XYZ& a3,
774 const gp_XYZ& p0,const gp_XYZ& p1,const gp_XYZ& p2,const gp_XYZ& p3)
777 ((1 - y) * p0 + x * p1 + y * p2 + (1 - x) * p3 ) -
778 ((1 - x) * (1 - y) * a0 + x * (1 - y) * a1 + x * y * a2 + (1 - x) * y * a3);
780 //=======================================================================