doc/salome/gui/SMESH/grouping_elements.htm

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  96 <h1>Grouping Elements</h1>\r
  97 \r
  98 <h3><a name=bookmark>Create a Standalone Group</a></h3>\r
  99 \r
 100 <p class="whs1">&nbsp;</p>\r
 101 \r
 102 <p class="whs1">import SMESH</p>\r
 103 \r
 104 <p class="whs1">import SMESH_mechanic</p>\r
 105 \r
 106 <p class="whs1">&nbsp;</p>\r
 107 \r
 108 <p class="whs1">smesh &nbsp;= \r
 109  SMESH_mechanic.smesh</p>\r
 110 \r
 111 <p class="whs1">mesh &nbsp;&nbsp;= \r
 112  SMESH_mechanic.mesh</p>\r
 113 \r
 114 <p class="whs1">salome = SMESH_mechanic.salome</p>\r
 115 \r
 116 <p class="whs1">&nbsp;</p>\r
 117 \r
 118 <p class="whs1">aFilterMgr = smesh.CreateFilterManager()</p>\r
 119 \r
 120 <p class="whs1">&nbsp;</p>\r
 121 \r
 122 <p class="whs2"># Criterion : AREA &gt; \r
 123  100</p>\r
 124 \r
 125 <p class="whs1">&nbsp;</p>\r
 126 \r
 127 <p class="whs1">aFunctor = aFilterMgr.CreateArea()</p>\r
 128 \r
 129 <p class="whs1">aPredicate = aFilterMgr.CreateMoreThan()</p>\r
 130 \r
 131 <p class="whs1">aPredicate.SetNumFunctor( \r
 132  aFunctor )</p>\r
 133 \r
 134 <p class="whs1">aPredicate.SetMargin( \r
 135  100 )</p>\r
 136 \r
 137 <p class="whs1">&nbsp;</p>\r
 138 \r
 139 <p class="whs1">aFilter = aFilterMgr.CreateFilter()</p>\r
 140 \r
 141 <p class="whs1">aFilter.SetPredicate( \r
 142  aPredicate )</p>\r
 143 \r
 144 <p class="whs1">&nbsp;</p>\r
 145 \r
 146 <p class="whs1">anIds = aFilter.GetElementsId( \r
 147  mesh )</p>\r
 148 \r
 149 <p class="whs2">&nbsp;</p>\r
 150 \r
 151 <p class="whs2"># print the result</p>\r
 152 \r
 153 <p class="whs1">print &quot;Criterion: \r
 154  Area &gt; 100 Nb = &quot;, len( anIds )</p>\r
 155 \r
 156 <p class="whs1">for i in range( \r
 157  len( anIds ) ):</p>\r
 158 \r
 159 <p class="whs1">&nbsp;&nbsp;print \r
 160  anIds[ i ]</p>\r
 161 \r
 162 <p class="whs1">&nbsp;</p>\r
 163 \r
 164 <p class="whs2"># create a group consisting \r
 165  of faces with area &gt; 100</p>\r
 166 \r
 167 <p class="whs1">aGroup = mesh.CreateGroup( \r
 168  SMESH.FACE, &quot;Area &gt; 100&quot; )</p>\r
 169 \r
 170 <p class="whs1">aGroup.Add( anIds \r
 171  )</p>\r
 172 \r
 173 <p class="whs1">&nbsp;</p>\r
 174 \r
 175 <p class="whs2"><span style="font-family: 'Lucida Console', monospace;">salome.sg.updateObjBrowser(1)</span> \r
 176  </p>\r
 177 \r
 178 <p class="whs2">&nbsp;</p>\r
 179 \r
 180 <p class="whs2"><img src="pics/create_group.png" x-maintain-ratio="TRUE" width="430px" height="391px" border="0" class="img_whs3"></p>\r
 181 \r
 182 <h3><a name=bookmark5>Create a Group on Geometry</a></h3>\r
 183 \r
 184 <p>Attention! This script was written using old approach, based on direct usage of SMESH idl interface. To be updated for version 3.2.1 to use <b>smesh</b> package.\r
 185 <br>&nbsp;\r
 186 \r
 187 <p class="whs1">import salome</p>\r
 188 \r
 189 <p class="whs1">import geompy</p>\r
 190 \r
 191 <p class="whs1">&nbsp;</p>\r
 192 \r
 193 <p class="whs1">import SMESH</p>\r
 194 \r
 195 <p class="whs1">import StdMeshers</p>\r
 196 \r
 197 <p class="whs1">&nbsp;</p>\r
 198 \r
 199 <p class="whs1">smesh = salome.lcc.FindOrLoadComponent(&quot;FactoryServer&quot;, \r
 200  &quot;SMESH&quot;)</p>\r
 201 \r
 202 <p class="whs2">&nbsp;</p>\r
 203 \r
 204 <p class="whs2"># create a box</p>\r
 205 \r
 206 <p class="whs1">box = geompy.MakeBox(0., \r
 207  0., 0., 100., 100., 100.)</p>\r
 208 \r
 209 <p class="whs2">&nbsp;</p>\r
 210 \r
 211 <p class="whs2"># add the box to the study</p>\r
 212 \r
 213 <p class="whs1">idbox = geompy.addToStudy(box, \r
 214  &quot;box&quot;)</p>\r
 215 \r
 216 <p class="whs2">&nbsp;</p>\r
 217 \r
 218 <p class="whs2"># add the first face of \r
 219  the box to the study</p>\r
 220 \r
 221 <p class="whs1">subShapeList = geompy.SubShapeAll(box, \r
 222  geompy.ShapeType[&quot;FACE&quot;])</p>\r
 223 \r
 224 <p class="whs1">face = subShapeList[0]</p>\r
 225 \r
 226 <p class="whs1">name = geompy.SubShapeName(face, \r
 227  box)</p>\r
 228 \r
 229 <p class="whs1">idface = geompy.addToStudyInFather(box, \r
 230  face, name)</p>\r
 231 \r
 232 <p class="whs2">&nbsp;</p>\r
 233 \r
 234 <p class="whs2"># create a hypothesis</p>\r
 235 \r
 236 <p class="whs1">numberOfSegments \r
 237  = 7</p>\r
 238 \r
 239 <p class="whs1">hypNbSeg = smesh.CreateHypothesis(&quot;NumberOfSegments&quot;, \r
 240  &quot;libStdMeshersEngine.so&quot;)</p>\r
 241 \r
 242 <p class="whs1">hypNbSeg.SetNumberOfSegments(numberOfSegments)</p>\r
 243 \r
 244 <p class="whs2">&nbsp;</p>\r
 245 \r
 246 <p class="whs2"># create algorithms</p>\r
 247 \r
 248 <p class="whs1">regular1D = smesh.CreateHypothesis(&quot;Regular_1D&quot;, \r
 249  &quot;libStdMeshersEngine.so&quot;)</p>\r
 250 \r
 251 <p class="whs1">quad2D = smesh.CreateHypothesis(&quot;Quadrangle_2D&quot;, \r
 252  &quot;libStdMeshersEngine.so&quot;)</p>\r
 253 \r
 254 <p class="whs2">&nbsp;</p>\r
 255 \r
 256 <p class="whs2"># initialize a mesh with \r
 257  the box</p>\r
 258 \r
 259 <p class="whs1">mesh = smesh.CreateMesh(box)</p>\r
 260 \r
 261 <p class="whs2">&nbsp;</p>\r
 262 \r
 263 <p class="whs2"># add hypotheses and algorithms \r
 264  to the box</p>\r
 265 \r
 266 <p class="whs1">mesh.AddHypothesis(box,hypNbSeg)</p>\r
 267 \r
 268 <p class="whs1">mesh.AddHypothesis(box,regular1D)</p>\r
 269 \r
 270 <p class="whs1">mesh.AddHypothesis(box,quad2D)</p>\r
 271 \r
 272 <p class="whs2">&nbsp;</p>\r
 273 \r
 274 <p class="whs2"># compute the mesh</p>\r
 275 \r
 276 <p class="whs1">ret = smesh.Compute(mesh,box)</p>\r
 277 \r
 278 <p class="whs1">if ret == 0:</p>\r
 279 \r
 280 <p class="whs1">&nbsp;&nbsp;&nbsp;&nbsp;print \r
 281  &quot;probleme when computing the mesh&quot;</p>\r
 282 \r
 283 <p class="whs1">else:</p>\r
 284 \r
 285 <p class="whs1">&nbsp;&nbsp;&nbsp;&nbsp;print \r
 286  &quot;Computation succeded&quot;</p>\r
 287 \r
 288 <p class="whs2">&nbsp;</p>\r
 289 \r
 290 <p class="whs2"># create geometry groups \r
 291  on the face</p>\r
 292 \r
 293 <p class="whs1">aGeomGroup1 = geompy.CreateGroup(face, \r
 294  geompy.ShapeType[&quot;FACE&quot;])</p>\r
 295 \r
 296 <p class="whs1">geompy.AddObject(aGeomGroup1, \r
 297  1)</p>\r
 298 \r
 299 <p class="whs1">&nbsp;</p>\r
 300 \r
 301 <p class="whs1">aGeomGroup2 = geompy.CreateGroup(face, \r
 302  geompy.ShapeType[&quot;EDGE&quot;])</p>\r
 303 \r
 304 <p class="whs1">geompy.AddObject(aGeomGroup2, \r
 305  3)</p>\r
 306 \r
 307 <p class="whs1">geompy.AddObject(aGeomGroup2, \r
 308  6)</p>\r
 309 \r
 310 <p class="whs1">geompy.AddObject(aGeomGroup2, \r
 311  8)</p>\r
 312 \r
 313 <p class="whs1">geompy.AddObject(aGeomGroup2, \r
 314  10)</p>\r
 315 \r
 316 <p class="whs1">&nbsp;</p>\r
 317 \r
 318 <p class="whs1">geompy.addToStudy(aGeomGroup1, \r
 319  &quot;Group on Faces&quot;)</p>\r
 320 \r
 321 <p class="whs1">geompy.addToStudy(aGeomGroup2, \r
 322  &quot;Group on Edges&quot;)</p>\r
 323 \r
 324 <p class="whs2">&nbsp;</p>\r
 325 \r
 326 <p class="whs2"># create SMESH groups</p>\r
 327 \r
 328 <p class="whs1">aSmeshGroup1 = mesh.CreateGroupFromGEOM(SMESH.FACE, \r
 329  &quot;SMESHGroup1&quot;,</p>\r
 330 \r
 331 <p class="whs1">aGeomGroup1)</p>\r
 332 \r
 333 <p class="whs1">aSmeshGroup2 = mesh.CreateGroupFromGEOM(SMESH.EDGE, \r
 334  &quot;SMESHGroup2&quot;, aGeomGroup2)</p>\r
 335 \r
 336 <p class="whs1">&nbsp;</p>\r
 337 \r
 338 <p class="whs2"><span style="font-family: 'Lucida Console', monospace;">salome.sg.updateObjBrowser(1)</span> \r
 339  &nbsp;</p>\r
 340 \r
 341 <p class="whs2">&nbsp;</p>\r
 342 \r
 343 <h3><a name=bookmark1>Edit a Group</a></h3>\r
 344 \r
 345 <p class="whs1">import SMESH</p>\r
 346 \r
 347 <p class="whs1">import SMESH_mechanic</p>\r
 348 \r
 349 <p class="whs1">&nbsp;</p>\r
 350 \r
 351 <p class="whs1">smesh &nbsp;= \r
 352  SMESH_mechanic.smesh</p>\r
 353 \r
 354 <p class="whs1">mesh &nbsp;&nbsp;= \r
 355  SMESH_mechanic.mesh</p>\r
 356 \r
 357 <p class="whs1">salome = SMESH_mechanic.salome</p>\r
 358 \r
 359 <p class="whs1">&nbsp;</p>\r
 360 \r
 361 <p class="whs1">aFilterMgr = smesh.CreateFilterManager()</p>\r
 362 \r
 363 <p class="whs1">&nbsp;</p>\r
 364 \r
 365 <p class="whs2"># Criterion : AREA &gt; \r
 366  20</p>\r
 367 \r
 368 <p class="whs2">&nbsp;</p>\r
 369 \r
 370 <p class="whs1">aFunctor = aFilterMgr.CreateArea()</p>\r
 371 \r
 372 <p class="whs1">aPredicate = aFilterMgr.CreateMoreThan()</p>\r
 373 \r
 374 <p class="whs1">aPredicate.SetNumFunctor( \r
 375  aFunctor )</p>\r
 376 \r
 377 <p class="whs1">aPredicate.SetMargin( \r
 378  30 )</p>\r
 379 \r
 380 <p class="whs1">&nbsp;</p>\r
 381 \r
 382 <p class="whs1">aFilter = aFilterMgr.CreateFilter()</p>\r
 383 \r
 384 <p class="whs1">aFilter.SetPredicate( \r
 385  aPredicate )</p>\r
 386 \r
 387 <p class="whs1">&nbsp;</p>\r
 388 \r
 389 <p class="whs1">anIds = aFilter.GetElementsId( \r
 390  mesh )</p>\r
 391 \r
 392 <p class="whs1">&nbsp;</p>\r
 393 \r
 394 <p class="whs2"># create a group by adding \r
 395  elements with area &gt; 20</p>\r
 396 \r
 397 <p class="whs1">aGroup = mesh.CreateGroup( \r
 398  SMESH.FACE, &quot;Area &gt; 20&quot; )</p>\r
 399 \r
 400 <p class="whs1">aGroup.Add( anIds \r
 401  )</p>\r
 402 \r
 403 <p class="whs1">&nbsp;</p>\r
 404 \r
 405 <p class="whs1">print &quot;Criterion: \r
 406  Area &gt; 20 Nb = &quot;, len( anIds )</p>\r
 407 \r
 408 <p class="whs1">for i in range( \r
 409  len( anIds ) ):</p>\r
 410 \r
 411 <p class="whs1">&nbsp;&nbsp;print \r
 412  anIds[ i ]</p>\r
 413 \r
 414 <p class="whs1">&nbsp;</p>\r
 415 \r
 416 <p class="whs2"># Criterion : AREA &gt; \r
 417  60</p>\r
 418 \r
 419 <p class="whs2">&nbsp;</p>\r
 420 \r
 421 <p class="whs1">aFunctor = aFilterMgr.CreateArea()</p>\r
 422 \r
 423 <p class="whs1">aPredicate = aFilterMgr.CreateMoreThan()</p>\r
 424 \r
 425 <p class="whs1">aPredicate.SetNumFunctor( \r
 426  aFunctor )</p>\r
 427 \r
 428 <p class="whs1">aPredicate.SetMargin( \r
 429  60 )</p>\r
 430 \r
 431 <p class="whs1">&nbsp;</p>\r
 432 \r
 433 <p class="whs1">aFilter = aFilterMgr.CreateFilter()</p>\r
 434 \r
 435 <p class="whs1">aFilter.SetPredicate( \r
 436  aPredicate )</p>\r
 437 \r
 438 <p class="whs1">&nbsp;</p>\r
 439 \r
 440 <p class="whs1">anIds = aFilter.GetElementsId( \r
 441  mesh )</p>\r
 442 \r
 443 <p class="whs2">&nbsp;</p>\r
 444 \r
 445 <p class="whs2"># create a group of elements \r
 446  with area [20; 60] by removing elements with area &gt; 60 from &nbsp;group \r
 447  aGroup </p>\r
 448 \r
 449 <p class="whs1">aGroup.Remove(anIds)</p>\r
 450 \r
 451 <p class="whs2">&nbsp;</p>\r
 452 \r
 453 <p class="whs2"># print the result</p>\r
 454 \r
 455 <p class="whs1">aGroupElemIDs = \r
 456  aGroup.GetListOfID()</p>\r
 457 \r
 458 <p class="whs1">print &quot;Criterion: \r
 459  20 &lt; Area &lt; 60 = &quot;, len( aGroupElemIDs )</p>\r
 460 \r
 461 <p class="whs1">for i in range( \r
 462  len( aGroupElemIDs ) ):</p>\r
 463 \r
 464 <p class="whs1">&nbsp;&nbsp;print \r
 465  aGroupElemIDs[ i ]</p>\r
 466 \r
 467 <p class="whs1">&nbsp;</p>\r
 468 \r
 469 <p class="whs2"><span style="font-family: 'Lucida Console', monospace;">salome.sg.updateObjBrowser(1)</span> \r
 470  </p>\r
 471 \r
 472 <p class="whs2">&nbsp;</p>\r
 473 \r
 474 <p class="whs2"><img src="pics/editing_groups1.png" x-maintain-ratio="TRUE" width="463px" height="417px" border="0" class="img_whs4"> &nbsp;<img src="pics/editing_groups2.png" x-maintain-ratio="TRUE" width="541px" height="417px" border="0" class="img_whs5"></p>\r
 475 \r
 476 <h3><a name=bookmark2>Union of two groups</a></h3>\r
 477 \r
 478 <p class="whs1">import SMESH</p>\r
 479 \r
 480 <p class="whs1">import SMESH_mechanic</p>\r
 481 \r
 482 <p class="whs1">&nbsp;</p>\r
 483 \r
 484 <p class="whs1">smesh &nbsp;= \r
 485  SMESH_mechanic.smesh</p>\r
 486 \r
 487 <p class="whs1">mesh &nbsp;&nbsp;= \r
 488  SMESH_mechanic.mesh</p>\r
 489 \r
 490 <p class="whs1">salome = SMESH_mechanic.salome</p>\r
 491 \r
 492 <p class="whs1">&nbsp;</p>\r
 493 \r
 494 <p class="whs1">aFilterMgr = smesh.CreateFilterManager()</p>\r
 495 \r
 496 <p class="whs1">&nbsp;</p>\r
 497 \r
 498 <p class="whs2"># Criterion : AREA &gt; \r
 499  20</p>\r
 500 \r
 501 <p class="whs2">&nbsp;</p>\r
 502 \r
 503 <p class="whs1">aFunctor = aFilterMgr.CreateArea()</p>\r
 504 \r
 505 <p class="whs1">aPredicate = aFilterMgr.CreateMoreThan()</p>\r
 506 \r
 507 <p class="whs1">aPredicate.SetNumFunctor( \r
 508  aFunctor )</p>\r
 509 \r
 510 <p class="whs1">aPredicate.SetMargin( \r
 511  20 )</p>\r
 512 \r
 513 <p class="whs1">&nbsp;</p>\r
 514 \r
 515 <p class="whs1">aFilter = aFilterMgr.CreateFilter()</p>\r
 516 \r
 517 <p class="whs1">aFilter.SetPredicate( \r
 518  aPredicate )</p>\r
 519 \r
 520 <p class="whs1">&nbsp;</p>\r
 521 \r
 522 <p class="whs1">anIds = aFilter.GetElementsId( \r
 523  mesh )</p>\r
 524 \r
 525 <p class="whs1">&nbsp;</p>\r
 526 \r
 527 <p class="whs2"># create a group by adding \r
 528  elements with area &gt; 20</p>\r
 529 \r
 530 <p class="whs1">aGroup1 = mesh.CreateGroup( \r
 531  SMESH.FACE, &quot;Area &gt; 20&quot; )</p>\r
 532 \r
 533 <p class="whs1">aGroup1.Add( anIds \r
 534  )</p>\r
 535 \r
 536 <p class="whs1">&nbsp;</p>\r
 537 \r
 538 <p class="whs1">print &quot;Criterion: \r
 539  Area &gt; 20 Nb = &quot;, len( anIds )</p>\r
 540 \r
 541 <p class="whs1">for i in range( \r
 542  len( anIds ) ):</p>\r
 543 \r
 544 <p class="whs1">&nbsp;&nbsp;print \r
 545  anIds[ i ]</p>\r
 546 \r
 547 <p class="whs1">&nbsp;</p>\r
 548 \r
 549 <p class="whs2"># Criterion : AREA = 20</p>\r
 550 \r
 551 <p class="whs2">&nbsp;</p>\r
 552 \r
 553 <p class="whs1">aFunctor = aFilterMgr.CreateArea()</p>\r
 554 \r
 555 <p class="whs1">aPredicate = aFilterMgr.CreateEqualTo()</p>\r
 556 \r
 557 <p class="whs1">aPredicate.SetNumFunctor( \r
 558  aFunctor )</p>\r
 559 \r
 560 <p class="whs1">aPredicate.SetMargin( \r
 561  20 )</p>\r
 562 \r
 563 <p class="whs1">&nbsp;</p>\r
 564 \r
 565 <p class="whs1">aFilter = aFilterMgr.CreateFilter()</p>\r
 566 \r
 567 <p class="whs1">aFilter.SetPredicate( \r
 568  aPredicate )</p>\r
 569 \r
 570 <p class="whs1">&nbsp;</p>\r
 571 \r
 572 <p class="whs1">anIds = aFilter.GetElementsId( \r
 573  mesh )</p>\r
 574 \r
 575 <p class="whs2">&nbsp;</p>\r
 576 \r
 577 <p class="whs2"># create a group by adding \r
 578  elements with area &gt; 20</p>\r
 579 \r
 580 <p class="whs1">aGroup2 = mesh.CreateGroup( \r
 581  SMESH.FACE, &quot;Area = 20&quot; )</p>\r
 582 \r
 583 <p class="whs1">aGroup2.Add( anIds \r
 584  )</p>\r
 585 \r
 586 <p class="whs1">&nbsp;</p>\r
 587 \r
 588 <p class="whs1">print &quot;Criterion: \r
 589  Area = 20 Nb = &quot;, len( anIds )</p>\r
 590 \r
 591 <p class="whs1">for i in range( \r
 592  len( anIds ) ):</p>\r
 593 \r
 594 <p class="whs1">&nbsp;&nbsp;print \r
 595  anIds[ i ]</p>\r
 596 \r
 597 <p class="whs2">&nbsp;</p>\r
 598 \r
 599 <p class="whs2"># create union group : \r
 600  area &gt;= 20</p>\r
 601 \r
 602 <p class="whs1">aGroup3 = mesh.UnionGroups(aGroup1, \r
 603  aGroup2, &quot;Area &gt;= 20&quot;)</p>\r
 604 \r
 605 <p class="whs1">print &quot;Criterion: \r
 606  Area &gt;= 20 Nb = &quot;, len( aGroup3.GetListOfID() )</p>\r
 607 \r
 608 <p class="whs1">&nbsp;</p>\r
 609 \r
 610 <p class="whs2"># Criterion : AREA &lt; \r
 611  20</p>\r
 612 \r
 613 <p class="whs2">&nbsp;</p>\r
 614 \r
 615 <p class="whs1">aFunctor = aFilterMgr.CreateArea()</p>\r
 616 \r
 617 <p class="whs1">aPredicate = aFilterMgr.CreateLessThan()</p>\r
 618 \r
 619 <p class="whs1">aPredicate.SetNumFunctor( \r
 620  aFunctor )</p>\r
 621 \r
 622 <p class="whs1">aPredicate.SetMargin( \r
 623  20 )</p>\r
 624 \r
 625 <p class="whs1">&nbsp;</p>\r
 626 \r
 627 <p class="whs1">aFilter = aFilterMgr.CreateFilter()</p>\r
 628 \r
 629 <p class="whs1">aFilter.SetPredicate( \r
 630  aPredicate )</p>\r
 631 \r
 632 <p class="whs1">&nbsp;</p>\r
 633 \r
 634 <p class="whs1">anIds = aFilter.GetElementsId( \r
 635  mesh )</p>\r
 636 \r
 637 <p class="whs1">&nbsp;</p>\r
 638 \r
 639 <p class="whs2"># create a group by adding \r
 640  elements with area &lt; 20</p>\r
 641 \r
 642 <p class="whs1">aGroup4 = mesh.CreateGroup( \r
 643  SMESH.FACE, &quot;Area &lt; 20&quot; )</p>\r
 644 \r
 645 <p class="whs1">aGroup4.Add( anIds \r
 646  )</p>\r
 647 \r
 648 <p class="whs1">&nbsp;</p>\r
 649 \r
 650 <p class="whs1">print &quot;Criterion: \r
 651  Area &lt; 20 Nb = &quot;, len( anIds )</p>\r
 652 \r
 653 <p class="whs1">for i in range( \r
 654  len( anIds ) ):</p>\r
 655 \r
 656 <p class="whs1">&nbsp;&nbsp;print \r
 657  anIds[ i ]</p>\r
 658 \r
 659 <p class="whs2">&nbsp;&nbsp;</p>\r
 660 \r
 661 <p class="whs2"># create union group : \r
 662  area &gt;= 20 and area &lt; 20</p>\r
 663 \r
 664 <p class="whs1">aGroup5 = mesh.UnionGroups(aGroup3, \r
 665  aGroup4, &quot;Any Area&quot;)</p>\r
 666 \r
 667 <p class="whs1">print &quot;Criterion: \r
 668  Any Area Nb = &quot;, len( aGroup5.GetListOfID() )</p>\r
 669 \r
 670 <p class="whs1">&nbsp;</p>\r
 671 \r
 672 <p class="whs1">salome.sg.updateObjBrowser(1) \r
 673  </p>\r
 674 \r
 675 <p class="whs1">&nbsp;</p>\r
 676 \r
 677 <p class="whs1"><img src="pics/union_groups1.png" x-maintain-ratio="TRUE" width="394px" height="425px" border="0" class="img_whs6"></p>\r
 678 \r
 679 <p class="whs1">&nbsp;</p>\r
 680 \r
 681 <p class="whs1"><img src="pics/union_groups2.png" x-maintain-ratio="TRUE" width="368px" height="379px" border="0" class="img_whs7"> <img src="pics/union_groups3.png" x-maintain-ratio="TRUE" width="344px" height="381px" border="0" class="img_whs8"></p>\r
 682 \r
 683 <p class="whs1">&nbsp;</p>\r
 684 \r
 685 <h3><a name=bookmark3>Intersection of two groups</a></h3>\r
 686 \r
 687 <p class="whs1">import SMESH</p>\r
 688 \r
 689 <p class="whs1">import SMESH_mechanic</p>\r
 690 \r
 691 <p class="whs1">&nbsp;</p>\r
 692 \r
 693 <p class="whs1">smesh &nbsp;= \r
 694  SMESH_mechanic.smesh</p>\r
 695 \r
 696 <p class="whs1">mesh &nbsp;&nbsp;= \r
 697  SMESH_mechanic.mesh</p>\r
 698 \r
 699 <p class="whs1">salome = SMESH_mechanic.salome</p>\r
 700 \r
 701 <p class="whs1">&nbsp;</p>\r
 702 \r
 703 <p class="whs1">aFilterMgr = smesh.CreateFilterManager()</p>\r
 704 \r
 705 <p class="whs1">&nbsp;</p>\r
 706 \r
 707 <p class="whs2"># Criterion : AREA &gt; \r
 708  20</p>\r
 709 \r
 710 <p class="whs2">&nbsp;</p>\r
 711 \r
 712 <p class="whs1">aFunctor = aFilterMgr.CreateArea()</p>\r
 713 \r
 714 <p class="whs1">aPredicate = aFilterMgr.CreateMoreThan()</p>\r
 715 \r
 716 <p class="whs1">aPredicate.SetNumFunctor( \r
 717  aFunctor )</p>\r
 718 \r
 719 <p class="whs1">aPredicate.SetMargin( \r
 720  20 )</p>\r
 721 \r
 722 <p class="whs1">&nbsp;</p>\r
 723 \r
 724 <p class="whs1">aFilter = aFilterMgr.CreateFilter()</p>\r
 725 \r
 726 <p class="whs1">aFilter.SetPredicate( \r
 727  aPredicate )</p>\r
 728 \r
 729 <p class="whs1">&nbsp;</p>\r
 730 \r
 731 <p class="whs1">anIds = aFilter.GetElementsId( \r
 732  mesh )</p>\r
 733 \r
 734 <p class="whs1">&nbsp;</p>\r
 735 \r
 736 <p class="whs2"># create a group by adding \r
 737  elements with area &gt; 20</p>\r
 738 \r
 739 <p class="whs1">aGroup1 = mesh.CreateGroup( \r
 740  SMESH.FACE, &quot;Area &gt; 20&quot; )</p>\r
 741 \r
 742 <p class="whs1">aGroup1.Add( anIds \r
 743  )</p>\r
 744 \r
 745 <p class="whs1">&nbsp;</p>\r
 746 \r
 747 <p class="whs1">print &quot;Criterion: \r
 748  Area &gt; 20 Nb = &quot;, len( anIds )</p>\r
 749 \r
 750 <p class="whs1">for i in range( \r
 751  len( anIds ) ):</p>\r
 752 \r
 753 <p class="whs1">&nbsp;&nbsp;print \r
 754  anIds[ i ]</p>\r
 755 \r
 756 <p class="whs1">&nbsp;</p>\r
 757 \r
 758 <p class="whs2"># Criterion : AREA &lt; \r
 759  60</p>\r
 760 \r
 761 <p class="whs2">&nbsp;</p>\r
 762 \r
 763 <p class="whs1">aFunctor = aFilterMgr.CreateArea()</p>\r
 764 \r
 765 <p class="whs1">aPredicate = aFilterMgr.CreateLessThan()</p>\r
 766 \r
 767 <p class="whs1">aPredicate.SetNumFunctor( \r
 768  aFunctor )</p>\r
 769 \r
 770 <p class="whs1">aPredicate.SetMargin( \r
 771  60 )</p>\r
 772 \r
 773 <p class="whs1">&nbsp;</p>\r
 774 \r
 775 <p class="whs1">aFilter = aFilterMgr.CreateFilter()</p>\r
 776 \r
 777 <p class="whs1">aFilter.SetPredicate( \r
 778  aPredicate )</p>\r
 779 \r
 780 <p class="whs1">&nbsp;</p>\r
 781 \r
 782 <p class="whs1">anIds = aFilter.GetElementsId( \r
 783  mesh )</p>\r
 784 \r
 785 <p class="whs1">&nbsp;</p>\r
 786 \r
 787 <p class="whs2"># create a group by adding \r
 788  elements with area &lt; 60</p>\r
 789 \r
 790 <p class="whs1">aGroup2 = mesh.CreateGroup( \r
 791  SMESH.FACE, &quot;Area &lt; 60&quot; )</p>\r
 792 \r
 793 <p class="whs1">aGroup2.Add( anIds \r
 794  )</p>\r
 795 \r
 796 <p class="whs1">&nbsp;</p>\r
 797 \r
 798 <p class="whs1">print &quot;Criterion: \r
 799  Area &lt; 60 Nb = &quot;, len( anIds )</p>\r
 800 \r
 801 <p class="whs1">for i in range( \r
 802  len( anIds ) ):</p>\r
 803 \r
 804 <p class="whs1">&nbsp;&nbsp;print \r
 805  anIds[ i ]</p>\r
 806 \r
 807 <p class="whs2">&nbsp;&nbsp;</p>\r
 808 \r
 809 <p class="whs2"># create an intersection \r
 810  of groups : 20 &lt; area &lt; 60</p>\r
 811 \r
 812 <p class="whs1">aGroup3 = mesh.IntersectGroups(aGroup1, \r
 813  aGroup2, &quot;20 &lt; Area &lt; 60&quot;)</p>\r
 814 \r
 815 <p class="whs1">print &quot;Criterion: \r
 816  20 &lt; Area &lt; 60 Nb = &quot;, len( aGroup3.GetListOfID() )</p>\r
 817 \r
 818 <p class="whs1">&nbsp;</p>\r
 819 \r
 820 <p class="whs2"><span style="font-family: 'Lucida Console', monospace;">salome.sg.updateObjBrowser(1)</span> \r
 821  </p>\r
 822 \r
 823 <p class="whs2">&nbsp;</p>\r
 824 \r
 825 <p class="whs2"><img src="pics/intersect_groups1.png" x-maintain-ratio="TRUE" width="314px" height="351px" border="0" class="img_whs9"> &nbsp;<img src="pics/intersect_groups2.png" x-maintain-ratio="TRUE" width="319px" height="351px" border="0" class="img_whs10"> &nbsp;<img src="pics/intersect_groups3.png" x-maintain-ratio="TRUE" width="304px" height="352px" border="0" class="img_whs11"></p>\r
 826 \r
 827 <h3><a name=bookmark4>Cut of two groups</a></h3>\r
 828 \r
 829 <p class="whs1">import SMESH</p>\r
 830 \r
 831 <p class="whs1">import SMESH_mechanic</p>\r
 832 \r
 833 <p class="whs1">&nbsp;</p>\r
 834 \r
 835 <p class="whs1">smesh &nbsp;= \r
 836  SMESH_mechanic.smesh</p>\r
 837 \r
 838 <p class="whs1">mesh &nbsp;&nbsp;= \r
 839  SMESH_mechanic.mesh</p>\r
 840 \r
 841 <p class="whs1">salome = SMESH_mechanic.salome</p>\r
 842 \r
 843 <p class="whs1">&nbsp;</p>\r
 844 \r
 845 <p class="whs1">aFilterMgr = smesh.CreateFilterManager()</p>\r
 846 \r
 847 <p class="whs1">&nbsp;</p>\r
 848 \r
 849 <p class="whs2"># Criterion : AREA &gt; \r
 850  20</p>\r
 851 \r
 852 <p class="whs2">&nbsp;</p>\r
 853 \r
 854 <p class="whs1">aFunctor = aFilterMgr.CreateArea()</p>\r
 855 \r
 856 <p class="whs1">aPredicate = aFilterMgr.CreateMoreThan()</p>\r
 857 \r
 858 <p class="whs1">aPredicate.SetNumFunctor( \r
 859  aFunctor )</p>\r
 860 \r
 861 <p class="whs1">aPredicate.SetMargin( \r
 862  20 )</p>\r
 863 \r
 864 <p class="whs1">&nbsp;</p>\r
 865 \r
 866 <p class="whs1">aFilter = aFilterMgr.CreateFilter()</p>\r
 867 \r
 868 <p class="whs1">aFilter.SetPredicate( \r
 869  aPredicate )</p>\r
 870 \r
 871 <p class="whs1">&nbsp;</p>\r
 872 \r
 873 <p class="whs1">anIds = aFilter.GetElementsId( \r
 874  mesh )</p>\r
 875 \r
 876 <p class="whs1">&nbsp;</p>\r
 877 \r
 878 <p class="whs2"># create a group by adding \r
 879  elements with area &gt; 20</p>\r
 880 \r
 881 <p class="whs1">aGroupMain = mesh.CreateGroup( \r
 882  SMESH.FACE, &quot;Area &gt; 20&quot; )</p>\r
 883 \r
 884 <p class="whs1">aGroupMain.Add( \r
 885  anIds )</p>\r
 886 \r
 887 <p class="whs1">&nbsp;</p>\r
 888 \r
 889 <p class="whs1">print &quot;Criterion: \r
 890  Area &gt; 20 Nb = &quot;, len( anIds )</p>\r
 891 \r
 892 <p class="whs1">for i in range( \r
 893  len( anIds ) ):</p>\r
 894 \r
 895 <p class="whs1">&nbsp;&nbsp;print \r
 896  anIds[ i ]</p>\r
 897 \r
 898 <p class="whs1">&nbsp;</p>\r
 899 \r
 900 <p class="whs2"># Criterion : AREA &lt; \r
 901  60</p>\r
 902 \r
 903 <p class="whs2">&nbsp;</p>\r
 904 \r
 905 <p class="whs1">aFunctor = aFilterMgr.CreateArea()</p>\r
 906 \r
 907 <p class="whs1">aPredicate = aFilterMgr.CreateLessThan()</p>\r
 908 \r
 909 <p class="whs1">aPredicate.SetNumFunctor( \r
 910  aFunctor )</p>\r
 911 \r
 912 <p class="whs1">aPredicate.SetMargin( \r
 913  60 )</p>\r
 914 \r
 915 <p class="whs1">&nbsp;</p>\r
 916 \r
 917 <p class="whs1">aFilter = aFilterMgr.CreateFilter()</p>\r
 918 \r
 919 <p class="whs1">aFilter.SetPredicate( \r
 920  aPredicate )</p>\r
 921 \r
 922 <p class="whs1">&nbsp;</p>\r
 923 \r
 924 <p class="whs1">anIds = aFilter.GetElementsId( \r
 925  mesh )</p>\r
 926 \r
 927 <p class="whs1">&nbsp;</p>\r
 928 \r
 929 <p class="whs2"># create a group by adding \r
 930  elements with area &lt; 60</p>\r
 931 \r
 932 <p class="whs1">aGroupTool = mesh.CreateGroup( \r
 933  SMESH.FACE, &quot;Area &lt; 60&quot; )</p>\r
 934 \r
 935 <p class="whs1">aGroupTool.Add( \r
 936  anIds )</p>\r
 937 \r
 938 <p class="whs1">&nbsp;</p>\r
 939 \r
 940 <p class="whs1">print &quot;Criterion: \r
 941  Area &lt; 60 Nb = &quot;, len( anIds )</p>\r
 942 \r
 943 <p class="whs1">for i in range( \r
 944  len( anIds ) ):</p>\r
 945 \r
 946 <p class="whs1">&nbsp;&nbsp;print \r
 947  anIds[ i ]</p>\r
 948 \r
 949 <p class="whs2">&nbsp;&nbsp;</p>\r
 950 \r
 951 <p class="whs2"># create an intersection \r
 952  of groups : area &gt;= 60</p>\r
 953 \r
 954 <p class="whs1">aGroupRes = mesh.CutGroups(aGroupMain, \r
 955  aGroupTool, &quot;Area &gt;= 60&quot;)</p>\r
 956 \r
 957 <p class="whs1">print &quot;Criterion: \r
 958  Area &gt;= 60 Nb = &quot;, len( aGroupRes.GetListOfID() )</p>\r
 959 \r
 960 <p class="whs1">&nbsp;</p>\r
 961 \r
 962 <p class="whs1">salome.sg.updateObjBrowser(1) \r
 963  </p>\r
 964 \r
 965 <p class="whs1">&nbsp;</p>\r
 966 \r
 967 <p class="whs2"><img src="pics/cut_groups1.png" x-maintain-ratio="TRUE" width="318px" height="355px" border="0" class="img_whs12"> &nbsp;<img src="pics/cut_groups2.png" x-maintain-ratio="TRUE" width="318px" height="355px" border="0" class="img_whs13"> &nbsp;<img src="pics/cut_groups3.png" x-maintain-ratio="TRUE" width="320px" height="354px" border="0" class="img_whs14"></p>\r
 968 \r
 969 <script type="text/javascript" language="javascript1.2">\r
 970 <!--\r
 971 if (window.writeIntopicBar)\r
 972         writeIntopicBar(0);\r
 973 //-->\r
 974 </script>\r
 975 </body>\r
 976 </html>\r