1 // Copyright (C) 2007-2016 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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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, or (at your option) any later version.
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13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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
34 #include <Geom_Surface.hxx>
35 #include <ShapeAnalysis_Surface.hxx>
36 #include <TopoDS_Face.hxx>
37 #include <TopoDS_Shape.hxx>
38 #include <gp_Pnt2d.hxx>
43 class GeomAPI_ProjectPointOnCurve;
44 class GeomAPI_ProjectPointOnSurf;
46 class SMESHDS_Hypothesis;
48 class SMESH_ProxyMesh;
50 typedef std::map<SMESH_TLink, const SMDS_MeshNode*> TLinkNodeMap;
51 typedef std::map<SMESH_TLink, const SMDS_MeshNode*>::iterator ItTLinkNode;
53 typedef SMDS_Iterator<const TopoDS_Shape*> PShapeIterator;
54 typedef boost::shared_ptr< PShapeIterator > PShapeIteratorPtr;
56 typedef std::vector<const SMDS_MeshNode* > TNodeColumn;
57 typedef std::map< double, TNodeColumn > TParam2ColumnMap;
59 typedef gp_XY (*xyFunPtr)(const gp_XY& uv1, const gp_XY& uv2);
61 //=======================================================================
63 * \brief It helps meshers to add elements and provides other utilities
65 * - It allows meshers not to care about creation of medium nodes
66 * when filling a quadratic mesh. Helper does it itself.
67 * It defines order of elements to create when IsQuadraticSubMesh()
69 * - It provides information on a shape it is initialized with:
70 * periodicity, presence of singularities etc.
73 //=======================================================================
75 class SMESH_EXPORT SMESH_MesherHelper
78 // ---------- PUBLIC UTILITIES ----------
81 * \brief Returns true if all elements of a sub-mesh are of same shape
82 * \param smDS - sub-mesh to check elements of
83 * \param shape - expected shape of elements
84 * \param nullSubMeshRes - result value for the case of smDS == NULL
85 * \retval bool - check result
87 static bool IsSameElemGeometry(const SMESHDS_SubMesh* smDS,
88 SMDSAbs_GeometryType shape,
89 const bool nullSubMeshRes = true);
92 * \brief Load nodes bound to face into a map of node columns
93 * \param theParam2ColumnMap - map of node columns to fill
94 * \param theFace - the face on which nodes are searched for
95 * \param theBaseSide - the edges holding nodes on which columns' bases
96 * \param theMesh - the mesh containing nodes
97 * \retval bool - false if something is wrong
99 * The key of the map is a normalized parameter of each
100 * base node on theBaseSide. Edges in theBaseSide must be sequenced.
101 * This method works in supposition that nodes on the face
102 * forms a structured grid and elements can be quardrangles or triangles
104 static bool LoadNodeColumns(TParam2ColumnMap & theParam2ColumnMap,
105 const TopoDS_Face& theFace,
106 const std::list<TopoDS_Edge>& theBaseSide,
107 SMESHDS_Mesh* theMesh,
108 SMESH_ProxyMesh* theProxyMesh=0);
110 * \brief Variant of LoadNodeColumns() above with theBaseSide given by one edge
112 static bool LoadNodeColumns(TParam2ColumnMap & theParam2ColumnMap,
113 const TopoDS_Face& theFace,
114 const TopoDS_Edge& theBaseEdge,
115 SMESHDS_Mesh* theMesh,
116 SMESH_ProxyMesh* theProxyMesh=0);
118 * \brief Return true if 2D mesh on FACE is structured
120 static bool IsStructured( SMESH_subMesh* faceSM );
123 * \brief Return true if 2D mesh on FACE is distored
125 static bool IsDistorted2D( SMESH_subMesh* faceSM, bool checkUV=false );
128 * \brief Returns true if given node is medium
129 * \param n - node to check
130 * \param typeToCheck - type of elements containing the node to ask about node status
131 * \retval bool - check result
133 static bool IsMedium(const SMDS_MeshNode* node,
134 const SMDSAbs_ElementType typeToCheck = SMDSAbs_All);
136 * \brief Return support shape of a node
137 * \param node - the node
138 * \param meshDS - mesh DS
139 * \retval TopoDS_Shape - found support shape
140 * \sa SMESH_Algo::VertexNode( const TopoDS_Vertex&, SMESHDS_Mesh* )
142 static TopoDS_Shape GetSubShapeByNode(const SMDS_MeshNode* node,
143 const SMESHDS_Mesh* meshDS);
146 * \brief Return a valid node index, fixing the given one if necessary
147 * \param ind - node index
148 * \param nbNodes - total nb of nodes
149 * \retval int - valid node index
151 static inline int WrapIndex(int ind, const int nbNodes) {
152 return (( ind %= nbNodes ) < 0 ) ? ind + nbNodes : ind;
156 * \brief Return UV of a point inside a quadrilateral FACE by it's
157 * normalized parameters within a unit quadrangle and the
158 * corresponding projections on sub-shapes of the real-world FACE.
159 * The used calculation method is called Trans-Finite Interpolation (TFI).
160 * \param x,y - normalized parameters that should be in range [0,1]
161 * \param a0,a1,a2,a3 - UV of VERTEXes of the FACE == projections on VERTEXes
162 * \param p0,p1,p2,p3 - UV of the point projections on EDGEs of the FACE
163 * \return gp_XY - UV of the point on the FACE
165 * Y ^ Order of those UV in the FACE is as follows.
173 * o---x-----o ----> X
176 inline static gp_XY calcTFI(double x, double y,
177 const gp_XY& a0,const gp_XY& a1,const gp_XY& a2,const gp_XY& a3,
178 const gp_XY& p0,const gp_XY& p1,const gp_XY& p2,const gp_XY& p3);
181 * \brief Same as "gp_XY calcTFI(...)" but in 3D
183 inline static gp_XYZ calcTFI(double x, double y,
184 const gp_XYZ& a0,const gp_XYZ& a1,const gp_XYZ& a2,const gp_XYZ& a3,
185 const gp_XYZ& p0,const gp_XYZ& p1,const gp_XYZ& p2,const gp_XYZ& p3);
187 * \brief Count nb of sub-shapes
188 * \param shape - the shape
189 * \param type - the type of sub-shapes to count
190 * \param ignoreSame - if true, use map not to count same shapes, else use explorer
191 * \retval int - the calculated number
193 static int Count(const TopoDS_Shape& shape,
194 const TopAbs_ShapeEnum type,
195 const bool ignoreSame);
198 * \brief Return number of unique ancestors of the shape
200 static int NbAncestors(const TopoDS_Shape& shape,
201 const SMESH_Mesh& mesh,
202 TopAbs_ShapeEnum ancestorType=TopAbs_SHAPE);
204 * \brief Return iterator on ancestors of the given type, included into a container shape
206 static PShapeIteratorPtr GetAncestors(const TopoDS_Shape& shape,
207 const SMESH_Mesh& mesh,
208 TopAbs_ShapeEnum ancestorType,
209 const TopoDS_Shape* container = 0);
211 * \brief Find a common ancestor, of the given type, of two shapes
213 static TopoDS_Shape GetCommonAncestor(const TopoDS_Shape& shape1,
214 const TopoDS_Shape& shape2,
215 const SMESH_Mesh& mesh,
216 TopAbs_ShapeEnum ancestorType);
218 * \brief Return orientation of sub-shape in the main shape
220 static TopAbs_Orientation GetSubShapeOri(const TopoDS_Shape& shape,
221 const TopoDS_Shape& subShape);
223 static bool IsSubShape( const TopoDS_Shape& shape, const TopoDS_Shape& mainShape );
225 static bool IsSubShape( const TopoDS_Shape& shape, SMESH_Mesh* aMesh );
227 static bool IsBlock( const TopoDS_Shape& shape );
229 static double MaxTolerance( const TopoDS_Shape& shape );
231 static double GetAngle( const TopoDS_Edge & E1, const TopoDS_Edge & E2,
232 const TopoDS_Face & F, const TopoDS_Vertex & V,
233 gp_Vec* faceNormal=0);
235 static bool IsClosedEdge( const TopoDS_Edge& anEdge );
237 static TopoDS_Vertex IthVertex( const bool is2nd, TopoDS_Edge anEdge, const bool CumOri=true );
239 static TopAbs_ShapeEnum GetGroupType(const TopoDS_Shape& group,
240 const bool avoidCompound=false);
242 static TopoDS_Shape GetShapeOfHypothesis( const SMESHDS_Hypothesis * hyp,
243 const TopoDS_Shape& shape,
248 // ---------- PUBLIC INSTANCE METHODS ----------
251 SMESH_MesherHelper(SMESH_Mesh& theMesh);
253 SMESH_Gen* GetGen() const;
255 SMESH_Mesh* GetMesh() const { return myMesh; }
257 SMESHDS_Mesh* GetMeshDS() const;
260 * Check submesh for given shape: if all elements on this shape are quadratic,
261 * quadratic elements will be created. Also fill myTLinkNodeMap
263 bool IsQuadraticSubMesh(const TopoDS_Shape& theShape);
266 * \brief Set order of elements to create without calling IsQuadraticSubMesh()
268 void SetIsQuadratic(const bool theBuildQuadratic)
269 { myCreateQuadratic = theBuildQuadratic; }
272 * \brief Set myCreateBiQuadratic flag
274 void SetIsBiQuadratic(const bool theBuildBiQuadratic)
275 { myCreateBiQuadratic = theBuildBiQuadratic; }
278 * \brief Return myCreateQuadratic flag
280 bool GetIsQuadratic() const { return myCreateQuadratic; }
283 * \brief Find out elements orientation on a geometrical face
285 bool IsReversedSubMesh (const TopoDS_Face& theFace);
288 * \brief Return myCreateBiQuadratic flag
290 bool GetIsBiQuadratic() const { return myCreateBiQuadratic; }
293 * \brief Move medium nodes of faces and volumes to fix distorted elements
294 * \param error - container of fixed distorted elements
295 * \param volumeOnly - fix nodes on geom faces or not if the shape is solid
297 void FixQuadraticElements(SMESH_ComputeErrorPtr& error, bool volumeOnly=true);
300 * \brief To set created elements on the shape set by IsQuadraticSubMesh()
301 * or the next methods. By defaul elements are set on the shape if
302 * a mesh has no shape to be meshed
304 bool SetElementsOnShape(bool toSet)
305 { bool res = mySetElemOnShape; mySetElemOnShape = toSet; return res; }
308 * \brief Set shape to make elements on without calling IsQuadraticSubMesh()
310 void SetSubShape(const int subShapeID);//!==SMESHDS_Mesh::ShapeToIndex(shape)
311 void SetSubShape(const TopoDS_Shape& subShape);
313 * \brief Return ID of the shape set by IsQuadraticSubMesh() or SetSubShape()
314 * \retval int - shape index in SMESHDS
316 int GetSubShapeID() const { return myShapeID; }
318 * \brief Return the shape set by IsQuadraticSubMesh() or SetSubShape()
320 const TopoDS_Shape& GetSubShape() const { return myShape; }
323 * \brief Convert a shape to its index in the SMESHDS_Mesh
325 int ShapeToIndex( const TopoDS_Shape& S ) const;
328 * Creates a node (!Note ID before u=0.,v0.)
330 SMDS_MeshNode* AddNode(double x, double y, double z, int ID = 0, double u=0., double v=0.);
332 * Creates quadratic or linear edge
334 SMDS_MeshEdge* AddEdge(const SMDS_MeshNode* n1,
335 const SMDS_MeshNode* n2,
337 const bool force3d = true);
339 * Creates quadratic or linear triangle
341 SMDS_MeshFace* AddFace(const SMDS_MeshNode* n1,
342 const SMDS_MeshNode* n2,
343 const SMDS_MeshNode* n3,
345 const bool force3d = false);
347 * Creates bi-quadratic, quadratic or linear quadrangle
349 SMDS_MeshFace* AddFace(const SMDS_MeshNode* n1,
350 const SMDS_MeshNode* n2,
351 const SMDS_MeshNode* n3,
352 const SMDS_MeshNode* n4,
354 const bool force3d = false);
356 * Creates polygon, with additional nodes in quadratic mesh
358 SMDS_MeshFace* AddPolygonalFace (const std::vector<const SMDS_MeshNode*>& nodes,
360 const bool force3d = false);
362 * Creates quadratic or linear tetrahedron
364 SMDS_MeshVolume* AddVolume(const SMDS_MeshNode* n1,
365 const SMDS_MeshNode* n2,
366 const SMDS_MeshNode* n3,
367 const SMDS_MeshNode* n4,
369 const bool force3d = true);
371 * Creates quadratic or linear pyramid
373 SMDS_MeshVolume* AddVolume(const SMDS_MeshNode* n1,
374 const SMDS_MeshNode* n2,
375 const SMDS_MeshNode* n3,
376 const SMDS_MeshNode* n4,
377 const SMDS_MeshNode* n5,
379 const bool force3d = true);
381 * Creates quadratic or linear pentahedron
383 SMDS_MeshVolume* AddVolume(const SMDS_MeshNode* n1,
384 const SMDS_MeshNode* n2,
385 const SMDS_MeshNode* n3,
386 const SMDS_MeshNode* n4,
387 const SMDS_MeshNode* n5,
388 const SMDS_MeshNode* n6,
390 const bool force3d = true);
392 * Creates bi-quadratic, quadratic or linear hexahedron
394 SMDS_MeshVolume* AddVolume(const SMDS_MeshNode* n1,
395 const SMDS_MeshNode* n2,
396 const SMDS_MeshNode* n3,
397 const SMDS_MeshNode* n4,
398 const SMDS_MeshNode* n5,
399 const SMDS_MeshNode* n6,
400 const SMDS_MeshNode* n7,
401 const SMDS_MeshNode* n8,
403 bool force3d = true);
406 * Creates LINEAR!!!!!!!!! octahedron
408 SMDS_MeshVolume* AddVolume(const SMDS_MeshNode* n1,
409 const SMDS_MeshNode* n2,
410 const SMDS_MeshNode* n3,
411 const SMDS_MeshNode* n4,
412 const SMDS_MeshNode* n5,
413 const SMDS_MeshNode* n6,
414 const SMDS_MeshNode* n7,
415 const SMDS_MeshNode* n8,
416 const SMDS_MeshNode* n9,
417 const SMDS_MeshNode* n10,
418 const SMDS_MeshNode* n11,
419 const SMDS_MeshNode* n12,
421 bool force3d = true);
424 * Creates polyhedron. In quadratic mesh, adds medium nodes
426 SMDS_MeshVolume* AddPolyhedralVolume (const std::vector<const SMDS_MeshNode*>& nodes,
427 const std::vector<int>& quantities,
429 const bool force3d = true);
431 * \brief Enables fixing node parameters on EDGEs and FACEs by
432 * GetNodeU(...,check=true), GetNodeUV(...,check=true), CheckNodeUV() and
433 * CheckNodeU() in case if a node lies on a shape set via SetSubShape().
436 void ToFixNodeParameters(bool toFix);
439 * \brief Return U of the given node on the edge
441 double GetNodeU(const TopoDS_Edge& theEdge,
442 const SMDS_MeshNode* theNode,
443 const SMDS_MeshNode* inEdgeNode=0,
444 bool* check=0) const;
446 * \brief Return node UV on face
447 * \param inFaceNode - a node of element being created located inside a face
448 * \param check - if provided, returns result of UV check that it enforces
450 gp_XY GetNodeUV(const TopoDS_Face& F,
451 const SMDS_MeshNode* n,
452 const SMDS_MeshNode* inFaceNode=0,
453 bool* check=0) const;
455 * \brief Check and fix node UV on a face
456 * \param force - check even if checks of other nodes on this face passed OK
457 * \param distXYZ - returns result distance and point coordinates
458 * \retval bool - false if UV is bad and could not be fixed
460 bool CheckNodeUV(const TopoDS_Face& F,
461 const SMDS_MeshNode* n,
464 const bool force=false,
465 double distXYZ[4]=0) const;
467 * \brief Check and fix node U on an edge
468 * \param force - check even if checks of other nodes on this edge passed OK
469 * \param distXYZ - returns result distance and point coordinates
470 * \retval bool - false if U is bad and could not be fixed
472 bool CheckNodeU(const TopoDS_Edge& E,
473 const SMDS_MeshNode* n,
476 const bool force=false,
477 double distXYZ[4]=0) const;
479 * \brief Return middle UV taking in account surface period
481 static gp_XY GetMiddleUV(const Handle(Geom_Surface)& surface,
485 * \brief Return UV for the central node of a biquadratic triangle
487 static gp_XY GetCenterUV(const gp_XY& uv1,
495 * \brief Define a pointer to wrapper over a function of gp_XY class,
496 * suitable to pass as xyFunPtr to ApplyIn2D().
497 * For exaple gp_XY_FunPtr(Added) defines pointer gp_XY_Added to function
498 * calling gp_XY::Added(gp_XY), which is to be used like following
499 * ApplyIn2D(surf, uv1, uv2, gp_XY_Added)
501 #define gp_XY_FunPtr(meth) \
502 static gp_XY __gpXY_##meth (const gp_XY& uv1, const gp_XY& uv2) { return uv1.meth( uv2 ); } \
503 static xyFunPtr gp_XY_##meth = & __gpXY_##meth
506 * \brief Perform given operation on two 2d points in parameric space of given surface.
507 * It takes into account period of the surface. Use gp_XY_FunPtr macro
508 * to easily define pointer to function of gp_XY class.
510 static gp_XY ApplyIn2D(Handle(Geom_Surface) surface,
514 const bool resultInPeriod=true);
517 * \brief Move node positions on a FACE within surface period
518 * \param [in] face - the FACE
519 * \param [inout] uv - node positions to adjust
520 * \param [in] nbUV - nb of \a uv
522 void AdjustByPeriod( const TopoDS_Face& face, gp_XY uv[], const int nbUV );
525 * \brief Check if inFaceNode argument is necessary for call GetNodeUV(F,..)
526 * \retval bool - return true if the face is periodic
528 * If F is Null, answer about subshape set through IsQuadraticSubMesh() or
531 bool GetNodeUVneedInFaceNode(const TopoDS_Face& F = TopoDS_Face()) const;
534 * \brief Return projector intitialized by given face without location, which is returned
536 GeomAPI_ProjectPointOnSurf& GetProjector(const TopoDS_Face& F,
537 TopLoc_Location& loc,
538 double tol=0 ) const;
540 * \brief Return a cached ShapeAnalysis_Surface of a FACE
542 Handle(ShapeAnalysis_Surface) GetSurface(const TopoDS_Face& F ) const;
545 * \brief Check if shape is a degenerated edge or it's vertex
546 * \param subShape - edge or vertex index in SMESHDS
547 * \retval bool - true if subShape is a degenerated shape
549 * It works only if IsQuadraticSubMesh() or SetSubShape() has been called
551 bool IsDegenShape(const int subShape) const
552 { return myDegenShapeIds.find( subShape ) != myDegenShapeIds.end(); }
554 * \brief Check if the shape set through IsQuadraticSubMesh() or SetSubShape()
555 * has a degenerated edges
556 * \retval bool - true if it has
558 bool HasDegeneratedEdges() const { return !myDegenShapeIds.empty(); }
561 * \brief Check if shape is a seam edge or it's vertex
562 * \param subShape - edge or vertex index in SMESHDS
563 * \retval bool - true if subShape is a seam shape
565 * It works only if IsQuadraticSubMesh() or SetSubShape() has been called.
566 * Seam shape has two 2D alternative represenations on the face
568 bool IsSeamShape(const int subShape) const
569 { return mySeamShapeIds.find( subShape ) != mySeamShapeIds.end(); }
571 * \brief Check if shape is a seam edge or it's vertex
572 * \param subShape - edge or vertex
573 * \retval bool - true if subShape is a seam shape
575 * It works only if IsQuadraticSubMesh() or SetSubShape() has been called.
576 * Seam shape has two 2D alternative represenations on the face
578 bool IsSeamShape(const TopoDS_Shape& subShape) const
579 { return IsSeamShape( ShapeToIndex( subShape )); }
581 * \brief Return true if an edge or a vertex encounters twice in face wire
582 * \param subShape - Id of edge or vertex
584 bool IsRealSeam(const int subShape) const
585 { return mySeamShapeIds.find( -subShape ) != mySeamShapeIds.end(); }
587 * \brief Return true if an edge or a vertex encounters twice in face wire
588 * \param subShape - edge or vertex
590 bool IsRealSeam(const TopoDS_Shape& subShape) const
591 { return IsRealSeam( ShapeToIndex( subShape )); }
593 * \brief Check if the shape set through IsQuadraticSubMesh() or SetSubShape()
594 * has a seam edge, i.e. an edge that has two parametric representations
596 * \retval bool - true if it has
598 bool HasSeam() const { return !mySeamShapeIds.empty(); }
600 * \brief Check if the shape set through IsQuadraticSubMesh() or SetSubShape()
601 * has a seam edge that encounters twice in a wire
602 * \retval bool - true if it has
604 bool HasRealSeam() const { return HasSeam() && ( *mySeamShapeIds.begin() < 0 ); }
606 * \brief Return index of periodic parametric direction of a closed face
607 * \retval int - 1 for U, 2 for V direction
609 int GetPeriodicIndex() const { return myParIndex; }
611 * \brief Return an alternative parameter for a node on seam
613 double GetOtherParam(const double param) const;
616 * \brief Return existing or create new medium nodes between given ones
617 * \param force3d - true means node creation at the middle between the
618 * two given nodes, else node position is found on its
619 * supporting geometrical shape, if any.
620 * \param expectedSupport - shape type corresponding to element being created
621 * , e.g TopAbs_EDGE if SMDSAbs_Edge is created
622 * basing on \a n1 and \a n2
624 const SMDS_MeshNode* GetMediumNode(const SMDS_MeshNode* n1,
625 const SMDS_MeshNode* n2,
627 TopAbs_ShapeEnum expectedSupport=TopAbs_SHAPE);
629 * \brief Return existing or create a new central node for a quardilateral
630 * quadratic face given its 8 nodes.
631 * \param force3d - true means node creation in between the given nodes,
632 * else node position is found on a geometrical face if any.
634 const SMDS_MeshNode* GetCentralNode(const SMDS_MeshNode* n1,
635 const SMDS_MeshNode* n2,
636 const SMDS_MeshNode* n3,
637 const SMDS_MeshNode* n4,
638 const SMDS_MeshNode* n12,
639 const SMDS_MeshNode* n23,
640 const SMDS_MeshNode* n34,
641 const SMDS_MeshNode* n41,
644 * \brief Return existing or create a new central node for a
645 * quadratic triangle given its 6 nodes.
646 * \param force3d - true means node creation in between the given nodes,
647 * else node position is found on a geometrical face if any.
649 const SMDS_MeshNode* GetCentralNode(const SMDS_MeshNode* n1,
650 const SMDS_MeshNode* n2,
651 const SMDS_MeshNode* n3,
652 const SMDS_MeshNode* n12,
653 const SMDS_MeshNode* n23,
654 const SMDS_MeshNode* n31,
657 * \brief Return index and type of the shape (EDGE or FACE only) to set a medium node on
659 std::pair<int, TopAbs_ShapeEnum> GetMediumPos(const SMDS_MeshNode* n1,
660 const SMDS_MeshNode* n2,
661 const bool useCurSubShape=false,
662 TopAbs_ShapeEnum expectedSupport=TopAbs_SHAPE);
664 * \brief Add a link in my data structure
666 void AddTLinkNode(const SMDS_MeshNode* n1,
667 const SMDS_MeshNode* n2,
668 const SMDS_MeshNode* n12);
670 * \brief Add many links in my data structure
672 void AddTLinkNodeMap(const TLinkNodeMap& aMap)
673 { myTLinkNodeMap.insert(aMap.begin(), aMap.end()); }
675 bool AddTLinks(const SMDS_MeshEdge* edge);
676 bool AddTLinks(const SMDS_MeshFace* face);
677 bool AddTLinks(const SMDS_MeshVolume* vol);
680 * Returns myTLinkNodeMap
682 const TLinkNodeMap& GetTLinkNodeMap() const { return myTLinkNodeMap; }
685 * Check mesh without geometry for: if all elements on this shape are quadratic,
686 * quadratic elements will be created.
687 * Used then generated 3D mesh without geometry.
689 enum MType{ LINEAR, QUADRATIC, COMP };
690 MType IsQuadraticMesh();
692 virtual ~SMESH_MesherHelper();
694 static void WriteShape(const TopoDS_Shape& s);
699 * \brief Select UV on either of 2 pcurves of a seam edge, closest to the given UV
700 * \param uv1 - UV on the seam
701 * \param uv2 - UV within a face
702 * \retval gp_Pnt2d - selected UV
704 gp_Pnt2d getUVOnSeam( const gp_Pnt2d& uv1, const gp_Pnt2d& uv2 ) const;
706 const SMDS_MeshNode* getMediumNodeOnComposedWire(const SMDS_MeshNode* n1,
707 const SMDS_MeshNode* n2,
710 double getFaceMaxTol( const TopoDS_Shape& face ) const;
714 // forbidden copy constructor
715 SMESH_MesherHelper (const SMESH_MesherHelper& theOther);
717 // key of a map of bi-quadratic face to it's central node
718 struct TBiQuad: public std::pair<int, std::pair<int, int> >
720 TBiQuad(const SMDS_MeshNode* n1,
721 const SMDS_MeshNode* n2,
722 const SMDS_MeshNode* n3,
723 const SMDS_MeshNode* n4=0)
729 if ( n4 ) s.insert(n4);
730 TIDSortedNodeSet::iterator n = s.begin();
731 first = (*n++)->GetID();
732 second.first = (*n++)->GetID();
733 second.second = (*n++)->GetID();
737 // maps used during creation of quadratic elements
738 TLinkNodeMap myTLinkNodeMap; // medium nodes on links
739 std::map< TBiQuad, const SMDS_MeshNode* > myMapWithCentralNode; // central nodes of faces
741 std::set< int > myDegenShapeIds;
742 std::set< int > mySeamShapeIds;
743 double myPar1[2], myPar2[2]; // U and V bounds of a closed periodic surface
744 int myParIndex; // bounds' index (1-U, 2-V, 3-both)
746 std::map< int, double > myFaceMaxTol;
748 typedef std::map< int, Handle(ShapeAnalysis_Surface)> TID2Surface;
749 typedef std::map< int, GeomAPI_ProjectPointOnSurf* > TID2ProjectorOnSurf;
750 typedef std::map< int, GeomAPI_ProjectPointOnCurve* > TID2ProjectorOnCurve;
751 mutable TID2Surface myFace2Surface;
752 TID2ProjectorOnSurf myFace2Projector;
753 TID2ProjectorOnCurve myEdge2Projector;
755 TopoDS_Shape myShape;
759 bool myCreateQuadratic;
760 bool myCreateBiQuadratic;
761 bool mySetElemOnShape;
762 bool myFixNodeParameters;
764 std::map< int,bool > myNodePosShapesValidity;
765 bool toCheckPosOnShape(int shapeID ) const;
766 void setPosOnShapeValidity(int shapeID, bool ok ) const;
769 //=======================================================================
771 SMESH_MesherHelper::calcTFI(double x, double y,
772 const gp_XY& a0,const gp_XY& a1,const gp_XY& a2,const gp_XY& a3,
773 const gp_XY& p0,const gp_XY& p1,const gp_XY& p2,const gp_XY& p3)
776 ((1 - y) * p0 + x * p1 + y * p2 + (1 - x) * p3 ) -
777 ((1 - x) * (1 - y) * a0 + x * (1 - y) * a1 + x * y * a2 + (1 - x) * y * a3);
779 //=======================================================================
781 SMESH_MesherHelper::calcTFI(double x, double y,
782 const gp_XYZ& a0,const gp_XYZ& a1,const gp_XYZ& a2,const gp_XYZ& a3,
783 const gp_XYZ& p0,const gp_XYZ& p1,const gp_XYZ& p2,const gp_XYZ& p3)
786 ((1 - y) * p0 + x * p1 + y * p2 + (1 - x) * p3 ) -
787 ((1 - x) * (1 - y) * a0 + x * (1 - y) * a1 + x * y * a2 + (1 - x) * y * a3);
789 //=======================================================================