doc/salome/gui/SMESH/grouping_elements.htm

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