1 // SMESH SMESH_I : idl implementation based on 'SMESH' unit's calsses
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.opencascade.org/SALOME/ or email : webmaster.salome@opencascade.org
24 // File : SMESH_MeshEditor.hxx
25 // Created : Mon Apr 12 14:56:19 2004
26 // Author : Edward AGAPOV (eap)
30 #ifndef SMESH_MeshEditor_HeaderFile
31 #define SMESH_MeshEditor_HeaderFile
33 #include "SMESH_Mesh.hxx"
34 #include "SMESH_Controls.hxx"
35 #include "SMESH_SequenceOfNode.hxx"
37 #include "TColStd_HSequenceOfReal.hxx"
38 #include "SMESH_MesherHelper.hxx"
43 typedef map<const SMDS_MeshElement*,
44 list<const SMDS_MeshElement*> > TElemOfElemListMap;
46 class SMDS_MeshElement;
53 class SMESH_MeshEditor {
56 SMESH_MeshEditor( SMESH_Mesh* theMesh );
58 bool Remove (const std::list< int >& theElemIDs, const bool isNodes);
59 // Remove a node or an element.
60 // Modify a compute state of sub-meshes which become empty
62 bool InverseDiag (const SMDS_MeshElement * theTria1,
63 const SMDS_MeshElement * theTria2 );
64 // Replace two neighbour triangles with ones built on the same 4 nodes
65 // but having other common link.
66 // Return False if args are improper
68 bool InverseDiag (const SMDS_MeshNode * theNode1,
69 const SMDS_MeshNode * theNode2 );
70 // Replace two neighbour triangles sharing theNode1-theNode2 link
71 // with ones built on the same 4 nodes but having other common link.
72 // Return false if proper faces not found
74 bool DeleteDiag (const SMDS_MeshNode * theNode1,
75 const SMDS_MeshNode * theNode2 );
76 // Replace two neighbour triangles sharing theNode1-theNode2 link
77 // with a quadrangle built on the same 4 nodes.
78 // Return false if proper faces not found
80 bool Reorient (const SMDS_MeshElement * theElement);
81 // Reverse theElement orientation
85 * \brief Fuse neighbour triangles into quadrangles.
86 * \param theElems - The triangles to be fused.
87 * \param theCriterion - Is used to choose a neighbour to fuse with.
88 * \param theMaxAngle - Is a max angle between element normals at which fusion
89 * is still performed; theMaxAngle is mesured in radians.
90 * \retval bool - Success or not.
92 bool TriToQuad (std::set<const SMDS_MeshElement*> & theElems,
93 SMESH::Controls::NumericalFunctorPtr theCriterion,
94 const double theMaxAngle);
97 * \brief Split quadrangles into triangles.
98 * \param theElems - The faces to be splitted.
99 * \param theCriterion - Is used to choose a diagonal for splitting.
100 * \retval bool - Success or not.
102 bool QuadToTri (std::set<const SMDS_MeshElement*> & theElems,
103 SMESH::Controls::NumericalFunctorPtr theCriterion);
106 * \brief Split quadrangles into triangles.
107 * \param theElems - The faces to be splitted.
108 * \param the13Diag - Is used to choose a diagonal for splitting.
109 * \retval bool - Success or not.
111 bool QuadToTri (std::set<const SMDS_MeshElement*> & theElems,
112 const bool the13Diag);
115 * \brief Find better diagonal for splitting.
116 * \param theQuad - The face to find better splitting of.
117 * \param theCriterion - Is used to choose a diagonal for splitting.
118 * \retval int - 1 for 1-3 diagonal, 2 for 2-4, -1 - for errors.
120 int BestSplit (const SMDS_MeshElement* theQuad,
121 SMESH::Controls::NumericalFunctorPtr theCriterion);
124 enum SmoothMethod { LAPLACIAN = 0, CENTROIDAL };
126 void Smooth (std::set<const SMDS_MeshElement*> & theElements,
127 std::set<const SMDS_MeshNode*> & theFixedNodes,
128 const SmoothMethod theSmoothMethod,
129 const int theNbIterations,
130 double theTgtAspectRatio = 1.0,
131 const bool the2D = true);
132 // Smooth theElements using theSmoothMethod during theNbIterations
133 // or until a worst element has aspect ratio <= theTgtAspectRatio.
134 // Aspect Ratio varies in range [1.0, inf].
135 // If theElements is empty, the whole mesh is smoothed.
136 // theFixedNodes contains additionally fixed nodes. Nodes built
137 // on edges and boundary nodes are always fixed.
138 // If the2D, smoothing is performed using UV parameters of nodes
139 // on geometrical faces
142 void RotationSweep (std::set<const SMDS_MeshElement*> & theElements,
143 const gp_Ax1& theAxis,
144 const double theAngle,
145 const int theNbSteps,
146 const double theToler);
147 // Generate new elements by rotation of theElements around theAxis
148 // by theAngle by theNbSteps
151 * Auxilary flag for advanced extrusion.
152 * BOUNDARY: create or not boundary for result of extrusion
153 * SEW: try to use existing nodes or create new nodes in any case
155 enum ExtrusionFlags {
156 EXTRUSION_FLAG_BOUNDARY = 0x01,
157 EXTRUSION_FLAG_SEW = 0x02
161 * special structire for control of extrusion functionality
164 gp_Dir myDir; // direction of extrusion
165 Handle(TColStd_HSequenceOfReal) mySteps; // magnitudes for each step
166 SMESH_SequenceOfNode myNodes; // nodes for using in sewing
170 * Create new node in the mesh with given coordinates
171 * (auxilary for advanced extrusion)
173 const SMDS_MeshNode* CreateNode(const double x,
176 const double tolnode,
177 SMESH_SequenceOfNode& aNodes);
180 * Generate new elements by extrusion of theElements
181 * It is a method used in .idl file. All functionality
182 * is implemented in the next method (see below) which
183 * is used in the cuurent method.
184 * param theElems - list of elements for extrusion
185 * param newElemsMap returns history of extrusion
186 * param theFlags set flags for performing extrusion (see description
187 * of enum ExtrusionFlags for additional information)
188 * param theTolerance - uses for comparing locations of nodes if flag
189 * EXTRUSION_FLAG_SEW is set
192 (set<const SMDS_MeshElement*> & theElems,
193 const gp_Vec& theStep,
194 const int theNbSteps,
195 TElemOfElemListMap& newElemsMap,
196 const int theFlags = EXTRUSION_FLAG_BOUNDARY,
197 const double theTolerance = 1.e-6);
200 * Generate new elements by extrusion of theElements
201 * param theElems - list of elements for extrusion
202 * param newElemsMap returns history of extrusion
203 * param theFlags set flags for performing extrusion (see description
204 * of enum ExtrusionFlags for additional information)
205 * param theTolerance - uses for comparing locations of nodes if flag
206 * EXTRUSION_FLAG_SEW is set
207 * param theParams - special structure for manage of extrusion
209 void ExtrusionSweep (set<const SMDS_MeshElement*> & theElems,
210 ExtrusParam& theParams,
211 TElemOfElemListMap& newElemsMap,
213 const double theTolerance);
216 // Generate new elements by extrusion of theElements
217 // by theStep by theNbSteps
219 enum Extrusion_Error {
224 EXTR_BAD_STARTING_NODE,
225 EXTR_BAD_ANGLES_NUMBER,
226 EXTR_CANT_GET_TANGENT
229 Extrusion_Error ExtrusionAlongTrack (std::set<const SMDS_MeshElement*> & theElements,
230 SMESH_subMesh* theTrackPattern,
231 const SMDS_MeshNode* theNodeStart,
232 const bool theHasAngles,
233 std::list<double>& theAngles,
234 const bool theHasRefPoint,
235 const gp_Pnt& theRefPoint);
236 // Generate new elements by extrusion of theElements along path given by theTrackPattern,
237 // theHasAngles are the rotation angles, base point can be given by theRefPoint
239 void Transform (std::set<const SMDS_MeshElement*> & theElements,
240 const gp_Trsf& theTrsf,
242 // Move or copy theElements applying theTrsf to their nodes
244 typedef std::list< std::list< const SMDS_MeshNode* > > TListOfListOfNodes;
246 void FindCoincidentNodes (std::set<const SMDS_MeshNode*> & theNodes,
247 const double theTolerance,
248 TListOfListOfNodes & theGroupsOfNodes);
249 // Return list of group of nodes close to each other within theTolerance.
250 // Search among theNodes or in the whole mesh if theNodes is empty.
252 int SimplifyFace (const vector<const SMDS_MeshNode *> faceNodes,
253 vector<const SMDS_MeshNode *>& poly_nodes,
254 vector<int>& quantities) const;
255 // Split face, defined by <faceNodes>, into several faces by repeating nodes.
256 // Is used by MergeNodes()
258 void MergeNodes (TListOfListOfNodes & theNodeGroups);
259 // In each group, the cdr of nodes are substituted by the first one
262 void MergeEqualElements();
263 // Remove all but one of elements built on the same nodes.
264 // Return nb of successfully merged groups.
266 static bool CheckFreeBorderNodes(const SMDS_MeshNode* theNode1,
267 const SMDS_MeshNode* theNode2,
268 const SMDS_MeshNode* theNode3 = 0);
269 // Return true if the three nodes are on a free border
273 // for SewFreeBorder()
274 SEW_BORDER1_NOT_FOUND,
275 SEW_BORDER2_NOT_FOUND,
276 SEW_BOTH_BORDERS_NOT_FOUND,
278 SEW_VOLUMES_TO_SPLIT,
279 // for SewSideElements()
280 SEW_DIFF_NB_OF_ELEMENTS,
281 SEW_TOPO_DIFF_SETS_OF_ELEMENTS,
287 Sew_Error SewFreeBorder (const SMDS_MeshNode* theBorderFirstNode,
288 const SMDS_MeshNode* theBorderSecondNode,
289 const SMDS_MeshNode* theBorderLastNode,
290 const SMDS_MeshNode* theSide2FirstNode,
291 const SMDS_MeshNode* theSide2SecondNode,
292 const SMDS_MeshNode* theSide2ThirdNode = 0,
293 const bool theSide2IsFreeBorder = true,
294 const bool toCreatePolygons = false,
295 const bool toCreatePolyedrs = false);
296 // Sew the free border to the side2 by replacing nodes in
297 // elements on the free border with nodes of the elements
298 // of the side 2. If nb of links in the free border and
299 // between theSide2FirstNode and theSide2LastNode are different,
300 // additional nodes are inserted on a link provided that no
301 // volume elements share the splitted link.
302 // The side 2 is a free border if theSide2IsFreeBorder == true.
303 // Sewing is peformed between the given first, second and last
304 // nodes on the sides.
305 // theBorderFirstNode is merged with theSide2FirstNode.
306 // if (!theSide2IsFreeBorder) then theSide2SecondNode gives
307 // the last node on the side 2, which will be merged with
308 // theBorderLastNode.
309 // if (theSide2IsFreeBorder) then theSide2SecondNode will
310 // be merged with theBorderSecondNode.
311 // if (theSide2IsFreeBorder && theSide2ThirdNode == 0) then
312 // the 2 free borders are sewn link by link and no additional
313 // nodes are inserted.
314 // Return false, if sewing failed.
316 Sew_Error SewSideElements (std::set<const SMDS_MeshElement*>& theSide1,
317 std::set<const SMDS_MeshElement*>& theSide2,
318 const SMDS_MeshNode* theFirstNode1ToMerge,
319 const SMDS_MeshNode* theFirstNode2ToMerge,
320 const SMDS_MeshNode* theSecondNode1ToMerge,
321 const SMDS_MeshNode* theSecondNode2ToMerge);
322 // Sew two sides of a mesh. Nodes belonging to theSide1 are
323 // merged with nodes of elements of theSide2.
324 // Number of elements in theSide1 and in theSide2 must be
325 // equal and they should have similar node connectivity.
326 // The nodes to merge should belong to side s borders and
327 // the first node should be linked to the second.
329 void InsertNodesIntoLink(const SMDS_MeshElement* theFace,
330 const SMDS_MeshNode* theBetweenNode1,
331 const SMDS_MeshNode* theBetweenNode2,
332 std::list<const SMDS_MeshNode*>& theNodesToInsert,
333 const bool toCreatePoly = false);
334 // insert theNodesToInsert into theFace between theBetweenNode1 and theBetweenNode2.
335 // If toCreatePoly is true, replace theFace by polygon, else split theFace.
337 void UpdateVolumes (const SMDS_MeshNode* theBetweenNode1,
338 const SMDS_MeshNode* theBetweenNode2,
339 std::list<const SMDS_MeshNode*>& theNodesToInsert);
340 // insert theNodesToInsert into all volumes, containing link
341 // theBetweenNode1 - theBetweenNode2, between theBetweenNode1 and theBetweenNode2.
343 void ConvertToQuadratic(const bool theForce3d);
344 //converts all mesh to quadratic one, deletes old elements, replacing
345 //them with quadratic ones with the same id.
347 bool ConvertFromQuadratic();
348 //converts all mesh from quadratic to ordinary ones, deletes old quadratic elements, replacing
349 //them with ordinary mesh elements with the same id.
352 // static int SortQuadNodes (const SMDS_Mesh * theMesh,
353 // int theNodeIds[] );
354 // // Set 4 nodes of a quadrangle face in a good order.
355 // // Swap 1<->2 or 2<->3 nodes and correspondingly return
358 // static bool SortHexaNodes (const SMDS_Mesh * theMesh,
359 // int theNodeIds[] );
360 // // Set 8 nodes of a hexahedron in a good order.
361 // // Return success status
363 static void AddToSameGroups (const SMDS_MeshElement* elemToAdd,
364 const SMDS_MeshElement* elemInGroups,
365 SMESHDS_Mesh * aMesh);
366 // Add elemToAdd to the groups the elemInGroups belongs to
368 static void RemoveElemFromGroups (const SMDS_MeshElement* removeelem,
369 SMESHDS_Mesh * aMesh);
370 // remove elemToAdd from the groups
372 static const SMDS_MeshElement*
373 FindFaceInSet(const SMDS_MeshNode* n1,
374 const SMDS_MeshNode* n2,
375 const std::set<const SMDS_MeshElement*>& elemSet,
376 const std::set<const SMDS_MeshElement*>& avoidSet);
377 // Return a face having linked nodes n1 and n2 and which is
378 // - not in avoidSet,
379 // - in elemSet provided that !elemSet.empty()
382 * \brief Returns true if given node is medium
383 * \param n - node to check
384 * \param typeToCheck - type of elements containing the node to ask about node status
385 * \retval bool - check result
387 static bool IsMedium(const SMDS_MeshNode* node,
388 const SMDSAbs_ElementType typeToCheck = SMDSAbs_All);
390 int FindShape (const SMDS_MeshElement * theElem);
391 // Return an index of the shape theElem is on
392 // or zero if a shape not found
394 SMESH_Mesh * GetMesh() { return myMesh; }
396 SMESHDS_Mesh * GetMeshDS() { return myMesh->GetMeshDS(); }
400 void ConvertElemToQuadratic(SMESHDS_SubMesh *theSm,
401 SMESH_MesherHelper* theHelper,
402 const bool theForce3d);
403 //Auxiliary function for "ConvertToQuadratic" is intended to convert
404 //elements contained in submesh to quadratic
406 void RemoveQuadElem( SMESHDS_SubMesh *theSm,
407 SMDS_ElemIteratorPtr theItr);
408 //Auxiliary function for "ConvertFromQuadratic" is intended to convert quadratic
409 //element to ordinary and for removing quadratic nodes