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"
39 typedef map<const SMDS_MeshElement*,
40 list<const SMDS_MeshElement*> > TElemOfElemListMap;
42 class SMDS_MeshElement;
49 class SMESH_MeshEditor {
52 SMESH_MeshEditor( SMESH_Mesh* theMesh );
54 bool Remove (const std::list< int >& theElemIDs, const bool isNodes);
55 // Remove a node or an element.
56 // Modify a compute state of sub-meshes which become empty
58 bool InverseDiag (const SMDS_MeshElement * theTria1,
59 const SMDS_MeshElement * theTria2 );
60 // Replace two neighbour triangles with ones built on the same 4 nodes
61 // but having other common link.
62 // Return False if args are improper
64 bool InverseDiag (const SMDS_MeshNode * theNode1,
65 const SMDS_MeshNode * theNode2 );
66 // Replace two neighbour triangles sharing theNode1-theNode2 link
67 // with ones built on the same 4 nodes but having other common link.
68 // Return false if proper faces not found
70 bool DeleteDiag (const SMDS_MeshNode * theNode1,
71 const SMDS_MeshNode * theNode2 );
72 // Replace two neighbour triangles sharing theNode1-theNode2 link
73 // with a quadrangle built on the same 4 nodes.
74 // Return false if proper faces not found
76 bool Reorient (const SMDS_MeshElement * theElement);
77 // Reverse theElement orientation
81 * \brief Fuse neighbour triangles into quadrangles.
82 * \param theElems - The triangles to be fused.
83 * \param theCriterion - Is used to choose a neighbour to fuse with.
84 * \param theMaxAngle - Is a max angle between element normals at which fusion
85 * is still performed; theMaxAngle is mesured in radians.
86 * \retval bool - Success or not.
88 bool TriToQuad (std::set<const SMDS_MeshElement*> & theElems,
89 SMESH::Controls::NumericalFunctorPtr theCriterion,
90 const double theMaxAngle);
93 * \brief Split quadrangles into triangles.
94 * \param theElems - The faces to be splitted.
95 * \param theCriterion - Is used to choose a diagonal for splitting.
96 * \retval bool - Success or not.
98 bool QuadToTri (std::set<const SMDS_MeshElement*> & theElems,
99 SMESH::Controls::NumericalFunctorPtr theCriterion);
102 * \brief Split quadrangles into triangles.
103 * \param theElems - The faces to be splitted.
104 * \param the13Diag - Is used to choose a diagonal for splitting.
105 * \retval bool - Success or not.
107 bool QuadToTri (std::set<const SMDS_MeshElement*> & theElems,
108 const bool the13Diag);
111 * \brief Find better diagonal for splitting.
112 * \param theQuad - The face to find better splitting of.
113 * \param theCriterion - Is used to choose a diagonal for splitting.
114 * \retval int - 1 for 1-3 diagonal, 2 for 2-4, -1 - for errors.
116 int BestSplit (const SMDS_MeshElement* theQuad,
117 SMESH::Controls::NumericalFunctorPtr theCriterion);
120 enum SmoothMethod { LAPLACIAN = 0, CENTROIDAL };
122 void Smooth (std::set<const SMDS_MeshElement*> & theElements,
123 std::set<const SMDS_MeshNode*> & theFixedNodes,
124 const SmoothMethod theSmoothMethod,
125 const int theNbIterations,
126 double theTgtAspectRatio = 1.0,
127 const bool the2D = true);
128 // Smooth theElements using theSmoothMethod during theNbIterations
129 // or until a worst element has aspect ratio <= theTgtAspectRatio.
130 // Aspect Ratio varies in range [1.0, inf].
131 // If theElements is empty, the whole mesh is smoothed.
132 // theFixedNodes contains additionally fixed nodes. Nodes built
133 // on edges and boundary nodes are always fixed.
134 // If the2D, smoothing is performed using UV parameters of nodes
135 // on geometrical faces
138 void RotationSweep (std::set<const SMDS_MeshElement*> & theElements,
139 const gp_Ax1& theAxis,
140 const double theAngle,
141 const int theNbSteps,
142 const double theToler);
143 // Generate new elements by rotation of theElements around theAxis
144 // by theAngle by theNbSteps
147 * Auxilary flag for advanced extrusion.
148 * BOUNDARY: create or not boundary for result of extrusion
149 * SEW: try to use existing nodes or create new nodes in any case
151 enum ExtrusionFlags {
152 EXTRUSION_FLAG_BOUNDARY = 0x01,
153 EXTRUSION_FLAG_SEW = 0x02
157 * Create new node in the mesh with given coordinates
158 * (auxilary for advanced extrusion)
160 const SMDS_MeshNode* CreateNode(const double x,
163 const double tolnode);
166 * Generate new elements by extrusion of theElements
167 * by theStep by theNbSteps
168 * param theHistory returns history of extrusion
169 * param theFlags set flags for performing extrusion (see description
170 * of enum ExtrusionFlags for additional information)
171 * param theTolerance - uses for comparing locations of nodes if flag
172 * EXTRUSION_FLAG_SEW is set
174 //void ExtrusionSweep (std::set<const SMDS_MeshElement*> & theElements,
175 // const gp_Vec& theStep,
176 // const int theNbSteps);
178 (set<const SMDS_MeshElement*> & theElems,
179 const gp_Vec& theStep,
180 const int theNbSteps,
181 TElemOfElemListMap& newElemsMap,
182 //SMESH_DataMapOfElemPtrSequenceOfElemPtr& theHistory,
183 const int theFlags = EXTRUSION_FLAG_BOUNDARY,
184 const double theTolerance = 1.e-6);
186 // Generate new elements by extrusion of theElements
187 // by theStep by theNbSteps
189 enum Extrusion_Error {
194 EXTR_BAD_STARTING_NODE,
195 EXTR_BAD_ANGLES_NUMBER,
196 EXTR_CANT_GET_TANGENT
199 Extrusion_Error ExtrusionAlongTrack (std::set<const SMDS_MeshElement*> & theElements,
200 SMESH_subMesh* theTrackPattern,
201 const SMDS_MeshNode* theNodeStart,
202 const bool theHasAngles,
203 std::list<double>& theAngles,
204 const bool theHasRefPoint,
205 const gp_Pnt& theRefPoint);
206 // Generate new elements by extrusion of theElements along path given by theTrackPattern,
207 // theHasAngles are the rotation angles, base point can be given by theRefPoint
209 void Transform (std::set<const SMDS_MeshElement*> & theElements,
210 const gp_Trsf& theTrsf,
212 // Move or copy theElements applying theTrsf to their nodes
214 typedef std::list< std::list< const SMDS_MeshNode* > > TListOfListOfNodes;
216 void FindCoincidentNodes (std::set<const SMDS_MeshNode*> & theNodes,
217 const double theTolerance,
218 TListOfListOfNodes & theGroupsOfNodes);
219 // Return list of group of nodes close to each other within theTolerance.
220 // Search among theNodes or in the whole mesh if theNodes is empty.
222 int SimplifyFace (const vector<const SMDS_MeshNode *> faceNodes,
223 vector<const SMDS_MeshNode *>& poly_nodes,
224 vector<int>& quantities) const;
225 // Split face, defined by <faceNodes>, into several faces by repeating nodes.
226 // Is used by MergeNodes()
228 void MergeNodes (TListOfListOfNodes & theNodeGroups);
229 // In each group, the cdr of nodes are substituted by the first one
232 void MergeEqualElements();
233 // Remove all but one of elements built on the same nodes.
234 // Return nb of successfully merged groups.
236 static bool CheckFreeBorderNodes(const SMDS_MeshNode* theNode1,
237 const SMDS_MeshNode* theNode2,
238 const SMDS_MeshNode* theNode3 = 0);
239 // Return true if the three nodes are on a free border
243 // for SewFreeBorder()
244 SEW_BORDER1_NOT_FOUND,
245 SEW_BORDER2_NOT_FOUND,
246 SEW_BOTH_BORDERS_NOT_FOUND,
248 SEW_VOLUMES_TO_SPLIT,
249 // for SewSideElements()
250 SEW_DIFF_NB_OF_ELEMENTS,
251 SEW_TOPO_DIFF_SETS_OF_ELEMENTS,
257 Sew_Error SewFreeBorder (const SMDS_MeshNode* theBorderFirstNode,
258 const SMDS_MeshNode* theBorderSecondNode,
259 const SMDS_MeshNode* theBorderLastNode,
260 const SMDS_MeshNode* theSide2FirstNode,
261 const SMDS_MeshNode* theSide2SecondNode,
262 const SMDS_MeshNode* theSide2ThirdNode = 0,
263 const bool theSide2IsFreeBorder = true,
264 const bool toCreatePolygons = false,
265 const bool toCreatePolyedrs = false);
266 // Sew the free border to the side2 by replacing nodes in
267 // elements on the free border with nodes of the elements
268 // of the side 2. If nb of links in the free border and
269 // between theSide2FirstNode and theSide2LastNode are different,
270 // additional nodes are inserted on a link provided that no
271 // volume elements share the splitted link.
272 // The side 2 is a free border if theSide2IsFreeBorder == true.
273 // Sewing is peformed between the given first, second and last
274 // nodes on the sides.
275 // theBorderFirstNode is merged with theSide2FirstNode.
276 // if (!theSide2IsFreeBorder) then theSide2SecondNode gives
277 // the last node on the side 2, which will be merged with
278 // theBorderLastNode.
279 // if (theSide2IsFreeBorder) then theSide2SecondNode will
280 // be merged with theBorderSecondNode.
281 // if (theSide2IsFreeBorder && theSide2ThirdNode == 0) then
282 // the 2 free borders are sewn link by link and no additional
283 // nodes are inserted.
284 // Return false, if sewing failed.
286 Sew_Error SewSideElements (std::set<const SMDS_MeshElement*>& theSide1,
287 std::set<const SMDS_MeshElement*>& theSide2,
288 const SMDS_MeshNode* theFirstNode1ToMerge,
289 const SMDS_MeshNode* theFirstNode2ToMerge,
290 const SMDS_MeshNode* theSecondNode1ToMerge,
291 const SMDS_MeshNode* theSecondNode2ToMerge);
292 // Sew two sides of a mesh. Nodes belonging to theSide1 are
293 // merged with nodes of elements of theSide2.
294 // Number of elements in theSide1 and in theSide2 must be
295 // equal and they should have similar node connectivity.
296 // The nodes to merge should belong to side s borders and
297 // the first node should be linked to the second.
299 void InsertNodesIntoLink(const SMDS_MeshElement* theFace,
300 const SMDS_MeshNode* theBetweenNode1,
301 const SMDS_MeshNode* theBetweenNode2,
302 std::list<const SMDS_MeshNode*>& theNodesToInsert,
303 const bool toCreatePoly = false);
304 // insert theNodesToInsert into theFace between theBetweenNode1 and theBetweenNode2.
305 // If toCreatePoly is true, replace theFace by polygon, else split theFace.
307 void UpdateVolumes (const SMDS_MeshNode* theBetweenNode1,
308 const SMDS_MeshNode* theBetweenNode2,
309 std::list<const SMDS_MeshNode*>& theNodesToInsert);
310 // insert theNodesToInsert into all volumes, containing link
311 // theBetweenNode1 - theBetweenNode2, between theBetweenNode1 and theBetweenNode2.
313 // static int SortQuadNodes (const SMDS_Mesh * theMesh,
314 // int theNodeIds[] );
315 // // Set 4 nodes of a quadrangle face in a good order.
316 // // Swap 1<->2 or 2<->3 nodes and correspondingly return
319 // static bool SortHexaNodes (const SMDS_Mesh * theMesh,
320 // int theNodeIds[] );
321 // // Set 8 nodes of a hexahedron in a good order.
322 // // Return success status
324 static void AddToSameGroups (const SMDS_MeshElement* elemToAdd,
325 const SMDS_MeshElement* elemInGroups,
326 SMESHDS_Mesh * aMesh);
327 // Add elemToAdd to the groups the elemInGroups belongs to
329 static const SMDS_MeshElement*
330 FindFaceInSet(const SMDS_MeshNode* n1,
331 const SMDS_MeshNode* n2,
332 const std::set<const SMDS_MeshElement*>& elemSet,
333 const std::set<const SMDS_MeshElement*>& avoidSet);
334 // Return a face having linked nodes n1 and n2 and which is
335 // - not in avoidSet,
336 // - in elemSet provided that !elemSet.empty()
338 int FindShape (const SMDS_MeshElement * theElem);
339 // Return an index of the shape theElem is on
340 // or zero if a shape not found
343 SMESH_Mesh * GetMesh() { return myMesh; }
345 SMESHDS_Mesh * GetMeshDS() { return myMesh->GetMeshDS(); }