doc/salome/gui/SMESH/defining_hypotheses_tui.htm

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  89 <h1>Defining Hypotheses and Algorithms</h1>\r
  90 \r
  91 <h3>Defining 1D Hypotheses</h3>\r
  92 \r
  93 <p class="whs1"><a name=bookmark>1D Arithmetic</a></p>\r
  94 \r
  95 <p>&nbsp;</p>\r
  96 \r
  97 <p class="whs2">from geompy import \r
  98  *</p>\r
  99 \r
 100 <p class="whs2">import smesh</p>\r
 101 \r
 102 <p>&nbsp;</p>\r
 103 \r
 104 <p># create vertices</p>\r
 105 \r
 106 <p class="whs2">Point111 = MakeVertex( \r
 107  0, &nbsp;0, &nbsp;0)</p>\r
 108 \r
 109 <p class="whs2">Point211 = MakeVertex(10, \r
 110  &nbsp;0, &nbsp;0)</p>\r
 111 \r
 112 <p class="whs2">Point121 = MakeVertex( \r
 113  0, 10, &nbsp;0)</p>\r
 114 \r
 115 <p class="whs2">Point221 = MakeVertex(10, \r
 116  10, &nbsp;0)</p>\r
 117 \r
 118 <p class="whs2">Point112 = MakeVertex( \r
 119  0, &nbsp;0, 10)</p>\r
 120 \r
 121 <p class="whs2">Point212 = MakeVertex(10, \r
 122  &nbsp;0, 10)</p>\r
 123 \r
 124 <p class="whs2">Point122 = MakeVertex( \r
 125  0, 10, 10)</p>\r
 126 \r
 127 <p class="whs2">Point222 = MakeVertex(10, \r
 128  10, 10)</p>\r
 129 \r
 130 <p>&nbsp;</p>\r
 131 \r
 132 <p># create edges</p>\r
 133 \r
 134 <p class="whs2">EdgeX111 = MakeEdge(Point111, \r
 135  Point211)</p>\r
 136 \r
 137 <p class="whs2">EdgeX121 = MakeEdge(Point121, \r
 138  Point221)</p>\r
 139 \r
 140 <p class="whs2">EdgeX112 = MakeEdge(Point112, \r
 141  Point212)</p>\r
 142 \r
 143 <p class="whs2">EdgeX122 = MakeEdge(Point122, \r
 144  Point222)</p>\r
 145 \r
 146 <p class="whs2">EdgeY11 = MakeEdge(Point111, \r
 147  Point121)</p>\r
 148 \r
 149 <p class="whs2">EdgeY21 = MakeEdge(Point211, \r
 150  Point221)</p>\r
 151 \r
 152 <p class="whs2">EdgeY12 = MakeEdge(Point112, \r
 153  Point122)</p>\r
 154 \r
 155 <p class="whs2">EdgeY22 = MakeEdge(Point212, \r
 156  Point222)</p>\r
 157 \r
 158 <p class="whs2">EdgeZ111 = MakeEdge(Point111, \r
 159  Point112)</p>\r
 160 \r
 161 <p class="whs2">EdgeZ211 = MakeEdge(Point211, \r
 162  Point212)</p>\r
 163 \r
 164 <p class="whs2">EdgeZ121 = MakeEdge(Point121, \r
 165  Point122)</p>\r
 166 \r
 167 <p class="whs2">EdgeZ221 = MakeEdge(Point221, \r
 168  Point222)</p>\r
 169 \r
 170 <p>&nbsp;</p>\r
 171 \r
 172 <p># create faces</p>\r
 173 \r
 174 <p class="whs2">FaceX11 = MakeQuad(EdgeY11, \r
 175  EdgeZ111, EdgeY12, EdgeZ121)</p>\r
 176 \r
 177 <p class="whs2">FaceX21 = MakeQuad(EdgeY21, \r
 178  EdgeZ211, EdgeY22, EdgeZ221)</p>\r
 179 \r
 180 <p class="whs2">FaceY111 = MakeQuad(EdgeX111, \r
 181  EdgeZ111, EdgeX112, EdgeZ211)</p>\r
 182 \r
 183 <p class="whs2">FaceY121 = MakeQuad(EdgeX121, \r
 184  EdgeZ121, EdgeX122, EdgeZ221)</p>\r
 185 \r
 186 <p class="whs2">FaceZ11 = MakeQuad(EdgeX111, \r
 187  EdgeY11, EdgeX121, EdgeY21)</p>\r
 188 \r
 189 <p class="whs2">FaceZ12 = MakeQuad(EdgeX112, \r
 190  EdgeY12, EdgeX122, EdgeY22)</p>\r
 191 \r
 192 <p>&nbsp;</p>\r
 193 \r
 194 <p># create a solid</p>\r
 195 \r
 196 <p class="whs2">Block = MakeHexa(FaceX11, \r
 197  FaceX21, FaceY111, FaceY121, FaceZ11, FaceZ12)</p>\r
 198 \r
 199 <p>&nbsp;</p>\r
 200 \r
 201 <p># create a compound</p>\r
 202 \r
 203 <p class="whs2">box = MakeCompound([Block])</p>\r
 204 \r
 205 <p>&nbsp;</p>\r
 206 \r
 207 <p># add in the study</p>\r
 208 \r
 209 <p class="whs2">box_id = addToStudy(box, \r
 210  &quot;Box compound&quot;)</p>\r
 211 \r
 212 <p>&nbsp;</p>\r
 213 \r
 214 <p># create a hexahedral mesh on the box</p>\r
 215 \r
 216 <p class="whs2">hexa = smesh.Mesh(box, \r
 217  &quot;Box compound : hexahedrical mesh&quot;)</p>\r
 218 \r
 219 <p class="whs2">algo = hexa.Segment()</p>\r
 220 \r
 221 <p>&nbsp;</p>\r
 222 \r
 223 <p># define &quot;NumberOfSegments&quot; hypothesis to cut an edge in a \r
 224  fixed number of segments</p>\r
 225 \r
 226 <p class="whs2">algo.NumberOfSegments(4)</p>\r
 227 \r
 228 <p>&nbsp;</p>\r
 229 \r
 230 <p># create a quadrangle 2D algorithm for faces</p>\r
 231 \r
 232 <p class="whs2">hexa.Quadrangle()</p>\r
 233 \r
 234 <p>&nbsp;</p>\r
 235 \r
 236 <p># create a hexahedron 3D algorithm for solids</p>\r
 237 \r
 238 <p class="whs2">hexa.Hexahedron()</p>\r
 239 \r
 240 <p>&nbsp;</p>\r
 241 \r
 242 <p># create a local hypothesis</p>\r
 243 \r
 244 <p class="whs2">algo = hexa.Segment(EdgeX111)</p>\r
 245 \r
 246 <p>&nbsp;</p>\r
 247 \r
 248 <p># define &quot;Arithmetic1D&quot; hypothesis to cut an edge in several \r
 249  segments with arithmetic length increasing</p>\r
 250 \r
 251 <p class="whs2">algo.Arithmetic1D(1, \r
 252  4)</p>\r
 253 \r
 254 <p>&nbsp;</p>\r
 255 \r
 256 <p># define &quot;Propagation&quot; hypothesis that propagates all other \r
 257  hypothesis on all edges on the opposite side in case of quadrangular faces</p>\r
 258 \r
 259 <p class="whs2">algo.Propagation()</p>\r
 260 \r
 261 <p>&nbsp;</p>\r
 262 \r
 263 <p># compute the mesh</p>\r
 264 \r
 265 <p class="whs2">hexa.Compute() </p>\r
 266 \r
 267 <p class="whs2">&nbsp;</p>\r
 268 \r
 269 <h4><a name=bookmark9>Deflection 1D and Number of Segments</a></h4>\r
 270 \r
 271 <p class="whs2">&nbsp;</p>\r
 272 \r
 273 <p class="whs2">import smesh</p>\r
 274 \r
 275 <p class="whs2">import geompy</p>\r
 276 \r
 277 <p class="whs2">import salome</p>\r
 278 \r
 279 <p class="whs2">gg = salome.ImportComponentGUI(&quot;GEOM&quot;)</p>\r
 280 \r
 281 <p class="whs2">&nbsp;</p>\r
 282 \r
 283 <p class="whs3"># create vertices</p>\r
 284 \r
 285 <p class="whs2">px &nbsp;&nbsp;= \r
 286  geompy.MakeVertex(100., 0. &nbsp;, \r
 287  0. &nbsp;)</p>\r
 288 \r
 289 <p class="whs2">py &nbsp;&nbsp;= \r
 290  geompy.MakeVertex(0. &nbsp;, \r
 291  100., 0. &nbsp;)</p>\r
 292 \r
 293 <p class="whs2">pz &nbsp;&nbsp;= \r
 294  geompy.MakeVertex(0. &nbsp;, \r
 295  0. &nbsp;, 100.)</p>\r
 296 \r
 297 <p class="whs2">&nbsp;</p>\r
 298 \r
 299 <p class="whs3"># create a vector from \r
 300  two points</p>\r
 301 \r
 302 <p class="whs2">vxy = geompy.MakeVector(px, \r
 303  py)</p>\r
 304 \r
 305 <p class="whs2">&nbsp;</p>\r
 306 \r
 307 <p class="whs3"># create an arc from \r
 308  three points</p>\r
 309 \r
 310 <p class="whs2">arc = geompy.MakeArc(py, \r
 311  pz, px)</p>\r
 312 \r
 313 <p class="whs2">&nbsp;</p>\r
 314 \r
 315 <p class="whs3"># create a wire</p>\r
 316 \r
 317 <p class="whs2">wire = geompy.MakeWire([vxy, \r
 318  arc])</p>\r
 319 \r
 320 <p class="whs2">isPlanarFace = 1</p>\r
 321 \r
 322 <p class="whs2">&nbsp;</p>\r
 323 \r
 324 <p class="whs3"># create a face from \r
 325  the wire</p>\r
 326 \r
 327 <p class="whs2">face1 = geompy.MakeFace(wire, \r
 328  isPlanarFace)</p>\r
 329 \r
 330 <p class="whs2">&nbsp;</p>\r
 331 \r
 332 <p class="whs3"><span style="font-family: 'Times New Roman', serif;"># \r
 333  get edges from the face</span></p>\r
 334 \r
 335 <p class="whs2">vxy,arc = geompy.SubShapeAll(face1,geompy.ShapeType[&quot;EDGE&quot;])</p>\r
 336 \r
 337 <p class="whs3">&nbsp;</p>\r
 338 \r
 339 <p class="whs3"># add objects in the \r
 340  study</p>\r
 341 \r
 342 <p class="whs2">id_face1 = geompy.addToStudy(face1,&quot;Face1&quot;)</p>\r
 343 \r
 344 <p class="whs2">id_arc = geompy.addToStudyInFather(face1,arc,&quot;Arc \r
 345  Edge&quot;)</p>\r
 346 \r
 347 <p class="whs2">&nbsp;</p>\r
 348 \r
 349 <p class="whs3"># display faces</p>\r
 350 \r
 351 <p class="whs2">gg.createAndDisplayGO(id_face1)</p>\r
 352 \r
 353 <p class="whs2">gg.setDisplayMode(id_face1,1)</p>\r
 354 \r
 355 <p class="whs2">gg.setTransparency(id_face1,0.2)</p>\r
 356 \r
 357 <p class="whs2">&nbsp;</p>\r
 358 \r
 359 <p class="whs3"># create hexahedral mesh</p>\r
 360 \r
 361 <p class="whs2">hexa = smesh.Mesh(face1, \r
 362  &quot;Face compound : hexahedrical mesh&quot;)</p>\r
 363 \r
 364 <p class="whs2">algo = hexa.Triangle()</p>\r
 365 \r
 366 <p class="whs2">&nbsp;</p>\r
 367 \r
 368 <p class="whs3"># define &quot;MaxElementArea&quot; \r
 369  hypothesis</p>\r
 370 \r
 371 <p class="whs2">algo.MaxElementArea(30)</p>\r
 372 \r
 373 <p class="whs2">&nbsp;</p>\r
 374 \r
 375 <p class="whs3"># create a local hypothesis \r
 376  on the wire</p>\r
 377 \r
 378 <p class="whs2">algo = hexa.Segment(wire)</p>\r
 379 \r
 380 <p class="whs2">&nbsp;</p>\r
 381 \r
 382 <p class="whs3"># define &quot;NumberOfSegments&quot; \r
 383  hypothesis to cut a straight edge in a fixed number of segments</p>\r
 384 \r
 385 <p class="whs2">algo.NumberOfSegments(6)</p>\r
 386 \r
 387 <p class="whs2">&nbsp;</p>\r
 388 \r
 389 <p class="whs3"># define a local &quot;Deflection1D&quot; \r
 390  hypothesis on the arc</p>\r
 391 \r
 392 <p class="whs2">algo = hexa.Segment(arc)</p>\r
 393 \r
 394 <p class="whs2">algo.Deflection1D(1)</p>\r
 395 \r
 396 <p class="whs2">&nbsp;</p>\r
 397 \r
 398 <p class="whs2">&nbsp;</p>\r
 399 \r
 400 <p class="whs3"># compute the mesh</p>\r
 401 \r
 402 <p class="whs2">hexa.Compute() </p>\r
 403 \r
 404 <p>&nbsp;</p>\r
 405 \r
 406 <h4><a name=bookmark2>Start and End Length</a></h4>\r
 407 \r
 408 <p class="whs2">from geompy import \r
 409  *</p>\r
 410 \r
 411 <p class="whs2">import smesh</p>\r
 412 \r
 413 <p>&nbsp;</p>\r
 414 \r
 415 <p># create vertices</p>\r
 416 \r
 417 <p class="whs2">Point111 = MakeVertex( \r
 418  0, &nbsp;0, &nbsp;0)</p>\r
 419 \r
 420 <p class="whs2">Point211 = MakeVertex(10, \r
 421  &nbsp;0, &nbsp;0)</p>\r
 422 \r
 423 <p class="whs2">Point121 = MakeVertex( \r
 424  0, 10, &nbsp;0)</p>\r
 425 \r
 426 <p class="whs2">Point221 = MakeVertex(10, \r
 427  10, &nbsp;0)</p>\r
 428 \r
 429 <p class="whs2">Point112 = MakeVertex( \r
 430  0, &nbsp;0, 10)</p>\r
 431 \r
 432 <p class="whs2">Point212 = MakeVertex(10, \r
 433  &nbsp;0, 10)</p>\r
 434 \r
 435 <p class="whs2">Point122 = MakeVertex( \r
 436  0, 10, 10)</p>\r
 437 \r
 438 <p class="whs2">Point222 = MakeVertex(10, \r
 439  10, 10)</p>\r
 440 \r
 441 <p>&nbsp;</p>\r
 442 \r
 443 <p># create edges</p>\r
 444 \r
 445 <p class="whs2">EdgeX111 = MakeEdge(Point111, \r
 446  Point211)</p>\r
 447 \r
 448 <p class="whs2">EdgeX121 = MakeEdge(Point121, \r
 449  Point221)</p>\r
 450 \r
 451 <p class="whs2">EdgeX112 = MakeEdge(Point112, \r
 452  Point212)</p>\r
 453 \r
 454 <p class="whs2">EdgeX122 = MakeEdge(Point122, \r
 455  Point222)</p>\r
 456 \r
 457 <p class="whs2">EdgeY11 = MakeEdge(Point111, \r
 458  Point121)</p>\r
 459 \r
 460 <p class="whs2">EdgeY21 = MakeEdge(Point211, \r
 461  Point221)</p>\r
 462 \r
 463 <p class="whs2">EdgeY12 = MakeEdge(Point112, \r
 464  Point122)</p>\r
 465 \r
 466 <p class="whs2">EdgeY22 = MakeEdge(Point212, \r
 467  Point222)</p>\r
 468 \r
 469 <p class="whs2">EdgeZ111 = MakeEdge(Point111, \r
 470  Point112)</p>\r
 471 \r
 472 <p class="whs2">EdgeZ211 = MakeEdge(Point211, \r
 473  Point212)</p>\r
 474 \r
 475 <p class="whs2">EdgeZ121 = MakeEdge(Point121, \r
 476  Point122)</p>\r
 477 \r
 478 <p class="whs2">EdgeZ221 = MakeEdge(Point221, \r
 479  Point222)</p>\r
 480 \r
 481 <p>&nbsp;</p>\r
 482 \r
 483 <p># create faces</p>\r
 484 \r
 485 <p class="whs2">FaceX11 = MakeQuad(EdgeY11, \r
 486  EdgeZ111, EdgeY12, EdgeZ121)</p>\r
 487 \r
 488 <p class="whs2">FaceX21 = MakeQuad(EdgeY21, \r
 489  EdgeZ211, EdgeY22, EdgeZ221)</p>\r
 490 \r
 491 <p class="whs2">FaceY111 = MakeQuad(EdgeX111, \r
 492  EdgeZ111, EdgeX112, EdgeZ211)</p>\r
 493 \r
 494 <p class="whs2">FaceY121 = MakeQuad(EdgeX121, \r
 495  EdgeZ121, EdgeX122, EdgeZ221)</p>\r
 496 \r
 497 <p class="whs2">FaceZ11 = MakeQuad(EdgeX111, \r
 498  EdgeY11, EdgeX121, EdgeY21)</p>\r
 499 \r
 500 <p class="whs2">FaceZ12 = MakeQuad(EdgeX112, \r
 501  EdgeY12, EdgeX122, EdgeY22)</p>\r
 502 \r
 503 <p>&nbsp;</p>\r
 504 \r
 505 <p># create a solid</p>\r
 506 \r
 507 <p class="whs2">Block = MakeHexa(FaceX11, \r
 508  FaceX21, FaceY111, FaceY121, FaceZ11, FaceZ12)</p>\r
 509 \r
 510 <p>&nbsp;</p>\r
 511 \r
 512 <p># create a compound</p>\r
 513 \r
 514 <p class="whs2">box = MakeCompound([Block])</p>\r
 515 \r
 516 <p>&nbsp;</p>\r
 517 \r
 518 <p># add in the study</p>\r
 519 \r
 520 <p class="whs2">box_id = addToStudy(box, \r
 521  &quot;Box compound&quot;)</p>\r
 522 \r
 523 <p>&nbsp;</p>\r
 524 \r
 525 <p># create a hexahedral mesh on the box</p>\r
 526 \r
 527 <p class="whs2">hexa = smesh.Mesh(box, \r
 528  &quot;Box compound : hexahedrical mesh&quot;)</p>\r
 529 \r
 530 <p class="whs2">algo = hexa.Segment()</p>\r
 531 \r
 532 <p>&nbsp;</p>\r
 533 \r
 534 <p># define &quot;NumberOfSegments&quot; hypothesis to cut an edge in a \r
 535  fixed number of segments</p>\r
 536 \r
 537 <p class="whs2">algo.NumberOfSegments(4)</p>\r
 538 \r
 539 <p>&nbsp;</p>\r
 540 \r
 541 <p># create a quadrangle 2D algorithm for faces</p>\r
 542 \r
 543 <p class="whs2">hexa.Quadrangle()</p>\r
 544 \r
 545 <p>&nbsp;</p>\r
 546 \r
 547 <p># create a hexahedron 3D algorithm for solids</p>\r
 548 \r
 549 <p class="whs2">hexa.Hexahedron()</p>\r
 550 \r
 551 <p>&nbsp;</p>\r
 552 \r
 553 <p># create a local hypothesis</p>\r
 554 \r
 555 <p class="whs2">algo = hexa.Segment(EdgeX111)</p>\r
 556 \r
 557 <p>&nbsp;</p>\r
 558 \r
 559 <p># define &quot;StartEndLength&quot; hypothesis to cut an edge in several \r
 560  segments with increasing geometric length </p>\r
 561 \r
 562 <p class="whs2">algo.StartEndLength(1, \r
 563  6)</p>\r
 564 \r
 565 <p>&nbsp;</p>\r
 566 \r
 567 <p># define &quot;Propagation&quot; hypothesis that propagates all other \r
 568  hypothesis on all edges on the opposite side in case of quadrangular faces</p>\r
 569 \r
 570 <p class="whs2">algo.Propagation()</p>\r
 571 \r
 572 <p>&nbsp;</p>\r
 573 \r
 574 <p># compute the mesh</p>\r
 575 \r
 576 <p class="whs2">hexa.Compute() </p>\r
 577 \r
 578 <p class="whs2">&nbsp;</p>\r
 579 \r
 580 <h4><a name=bookmark3>Average Length</a></h4>\r
 581 \r
 582 <p class="whs2">from geompy import \r
 583  *</p>\r
 584 \r
 585 <p class="whs2">import smesh</p>\r
 586 \r
 587 <p class="whs2">&nbsp;</p>\r
 588 \r
 589 <p class="whs3"># create vertices</p>\r
 590 \r
 591 <p class="whs2">Point111 = MakeVertex( \r
 592  0, &nbsp;0, &nbsp;0)</p>\r
 593 \r
 594 <p class="whs2">Point211 = MakeVertex(10, \r
 595  &nbsp;0, &nbsp;0)</p>\r
 596 \r
 597 <p class="whs2">Point121 = MakeVertex( \r
 598  0, 10, &nbsp;0)</p>\r
 599 \r
 600 <p class="whs2">Point221 = MakeVertex(10, \r
 601  10, &nbsp;0)</p>\r
 602 \r
 603 <p class="whs2">Point112 = MakeVertex( \r
 604  0, &nbsp;0, 10)</p>\r
 605 \r
 606 <p class="whs2">Point212 = MakeVertex(10, \r
 607  &nbsp;0, 10)</p>\r
 608 \r
 609 <p class="whs2">Point122 = MakeVertex( \r
 610  0, 10, 10)</p>\r
 611 \r
 612 <p class="whs2">Point222 = MakeVertex(10, \r
 613  10, 10)</p>\r
 614 \r
 615 <p class="whs2">&nbsp;</p>\r
 616 \r
 617 <p class="whs3"># create edges</p>\r
 618 \r
 619 <p class="whs2">EdgeX111 = MakeEdge(Point111, \r
 620  Point211)</p>\r
 621 \r
 622 <p class="whs2">EdgeX121 = MakeEdge(Point121, \r
 623  Point221)</p>\r
 624 \r
 625 <p class="whs2">EdgeX112 = MakeEdge(Point112, \r
 626  Point212)</p>\r
 627 \r
 628 <p class="whs2">EdgeX122 = MakeEdge(Point122, \r
 629  Point222)</p>\r
 630 \r
 631 <p class="whs2">EdgeY11 = MakeEdge(Point111, \r
 632  Point121)</p>\r
 633 \r
 634 <p class="whs2">EdgeY21 = MakeEdge(Point211, \r
 635  Point221)</p>\r
 636 \r
 637 <p class="whs2">EdgeY12 = MakeEdge(Point112, \r
 638  Point122)</p>\r
 639 \r
 640 <p class="whs2">EdgeY22 = MakeEdge(Point212, \r
 641  Point222)</p>\r
 642 \r
 643 <p class="whs2">EdgeZ111 = MakeEdge(Point111, \r
 644  Point112)</p>\r
 645 \r
 646 <p class="whs2">EdgeZ211 = MakeEdge(Point211, \r
 647  Point212)</p>\r
 648 \r
 649 <p class="whs2">EdgeZ121 = MakeEdge(Point121, \r
 650  Point122)</p>\r
 651 \r
 652 <p class="whs2">EdgeZ221 = MakeEdge(Point221, \r
 653  Point222)</p>\r
 654 \r
 655 <p class="whs2">&nbsp;</p>\r
 656 \r
 657 <p class="whs3"># create faces</p>\r
 658 \r
 659 <p class="whs2">FaceX11 = MakeQuad(EdgeY11, \r
 660  EdgeZ111, EdgeY12, EdgeZ121)</p>\r
 661 \r
 662 <p class="whs2">FaceX21 = MakeQuad(EdgeY21, \r
 663  EdgeZ211, EdgeY22, EdgeZ221)</p>\r
 664 \r
 665 <p class="whs2">FaceY111 = MakeQuad(EdgeX111, \r
 666  EdgeZ111, EdgeX112, EdgeZ211)</p>\r
 667 \r
 668 <p class="whs2">FaceY121 = MakeQuad(EdgeX121, \r
 669  EdgeZ121, EdgeX122, EdgeZ221)</p>\r
 670 \r
 671 <p class="whs2">FaceZ11 = MakeQuad(EdgeX111, \r
 672  EdgeY11, EdgeX121, EdgeY21)</p>\r
 673 \r
 674 <p class="whs2">FaceZ12 = MakeQuad(EdgeX112, \r
 675  EdgeY12, EdgeX122, EdgeY22)</p>\r
 676 \r
 677 <p class="whs2">&nbsp;</p>\r
 678 \r
 679 <p class="whs3"># create a solid</p>\r
 680 \r
 681 <p class="whs2">Block = MakeHexa(FaceX11, \r
 682  FaceX21, FaceY111, FaceY121, FaceZ11, FaceZ12)</p>\r
 683 \r
 684 <p class="whs2">&nbsp;</p>\r
 685 \r
 686 <p class="whs3"># create a compound</p>\r
 687 \r
 688 <p class="whs2">box = MakeCompound([Block])</p>\r
 689 \r
 690 <p class="whs2">&nbsp;</p>\r
 691 \r
 692 <p class="whs3"># add in the study</p>\r
 693 \r
 694 <p class="whs2">box_id = addToStudy(box, \r
 695  &quot;Box compound&quot;)</p>\r
 696 \r
 697 <p class="whs2">&nbsp;</p>\r
 698 \r
 699 <p class="whs3"># create a hexahedral \r
 700  mesh on the box</p>\r
 701 \r
 702 <p class="whs2">hexa = smesh.Mesh(box, \r
 703  &quot;Box compound : hexahedrical mesh&quot;)</p>\r
 704 \r
 705 <p class="whs2">algo = hexa.Segment()</p>\r
 706 \r
 707 <p class="whs2">&nbsp;</p>\r
 708 \r
 709 <p class="whs3"># define &quot;NumberOfSegments&quot; \r
 710  hypothesis to cut an edge in a fixed number of segments</p>\r
 711 \r
 712 <p class="whs2">algo.NumberOfSegments(4)</p>\r
 713 \r
 714 <p class="whs2">&nbsp;</p>\r
 715 \r
 716 <p class="whs3"># create a quadrangle \r
 717  2D algorithm for faces</p>\r
 718 \r
 719 <p class="whs2">hexa.Quadrangle()</p>\r
 720 \r
 721 <p class="whs2">&nbsp;</p>\r
 722 \r
 723 <p class="whs3"># create a hexahedron \r
 724  3D algorithm for solids</p>\r
 725 \r
 726 <p class="whs2">hexa.Hexahedron()</p>\r
 727 \r
 728 <p class="whs2">&nbsp;</p>\r
 729 \r
 730 <p class="whs3"># create a local hypothesis</p>\r
 731 \r
 732 <p class="whs2">algo = hexa.Segment(EdgeX111)</p>\r
 733 \r
 734 <p class="whs2">&nbsp;</p>\r
 735 \r
 736 <p class="whs3"># define &quot;LocalLength&quot; \r
 737  hypothesis to cut an edge in several segments with the same length</p>\r
 738 \r
 739 <p class="whs2">algo.LocalLength(2)</p>\r
 740 \r
 741 <p class="whs2">&nbsp;</p>\r
 742 \r
 743 <p class="whs3"># define &quot;Propagation&quot; \r
 744  hypothesis that propagates all other hypothesis on all edges on<span style="font-family: 'Times New Roman', serif;"> \r
 745  the opposite side in case of quadrangular faces</span></p>\r
 746 \r
 747 <p class="whs2">algo.Propagation()</p>\r
 748 \r
 749 <p class="whs2">&nbsp;</p>\r
 750 \r
 751 <p class="whs3"># compute the mesh</p>\r
 752 \r
 753 <p class="whs2">hexa.Compute() </p>\r
 754 \r
 755 <p class="whs2">&nbsp;</p>\r
 756 \r
 757 <p class="whs2">&nbsp;</p>\r
 758 \r
 759 <h3>Defining 2D and 3D hypotheses</h3>\r
 760 \r
 761 <h4><a name=bookmark4>Maximum Element Area</a></h4>\r
 762 \r
 763 <p class="whs4"><span style="font-family: 'Lucida Console', monospace;">import \r
 764  smesh</span></p>\r
 765 \r
 766 <p class="whs4">import geompy</p>\r
 767 \r
 768 <p class="whs4">import salome</p>\r
 769 \r
 770 <p class="whs4">&nbsp;</p>\r
 771 \r
 772 <p class="whs5"># create a face</p>\r
 773 \r
 774 <p class="whs4">px &nbsp;&nbsp;= \r
 775  geompy.MakeVertex(100., 0. &nbsp;, \r
 776  0. &nbsp;)</p>\r
 777 \r
 778 <p class="whs4">py &nbsp;&nbsp;= \r
 779  geompy.MakeVertex(0. &nbsp;, \r
 780  100., 0. &nbsp;)</p>\r
 781 \r
 782 <p class="whs4">pz &nbsp;&nbsp;= \r
 783  geompy.MakeVertex(0. &nbsp;, \r
 784  0. &nbsp;, 100.)</p>\r
 785 \r
 786 <p class="whs4">&nbsp;</p>\r
 787 \r
 788 <p class="whs4">vxy = geompy.MakeVector(px, \r
 789  py)</p>\r
 790 \r
 791 <p class="whs4">arc = geompy.MakeArc(py, \r
 792  pz, px)</p>\r
 793 \r
 794 <p class="whs4">wire = geompy.MakeWire([vxy, \r
 795  arc])</p>\r
 796 \r
 797 <p class="whs4">&nbsp;</p>\r
 798 \r
 799 <p class="whs4">isPlanarFace = 1</p>\r
 800 \r
 801 <p class="whs4">face = geompy.MakeFace(wire, \r
 802  isPlanarFace)</p>\r
 803 \r
 804 <p class="whs4">&nbsp;</p>\r
 805 \r
 806 <p class="whs5"># add the face in the \r
 807  study</p>\r
 808 \r
 809 <p class="whs4">id_face = geompy.addToStudy(face, \r
 810  &quot;Face to be meshed&quot;)</p>\r
 811 \r
 812 <p class="whs4">&nbsp;</p>\r
 813 \r
 814 <p class="whs5"># create a mesh</p>\r
 815 \r
 816 <p class="whs4">tria_mesh = smesh.Mesh(face, \r
 817  &quot;Face : triangulation&quot;)</p>\r
 818 \r
 819 <p class="whs4">&nbsp;</p>\r
 820 \r
 821 <p class="whs5"># define 1D meshing:</p>\r
 822 \r
 823 <p class="whs4">algo = tria_mesh.Segment()</p>\r
 824 \r
 825 <p class="whs4">algo.NumberOfSegments(20)</p>\r
 826 \r
 827 <p class="whs4">&nbsp;</p>\r
 828 \r
 829 <p class="whs5"># define 2D meshing:</p>\r
 830 \r
 831 <p class="whs5">&nbsp;</p>\r
 832 \r
 833 <p class="whs5"># assign triangulation \r
 834  algorithm</p>\r
 835 \r
 836 <p class="whs4">algo = tria_mesh.Triangle()</p>\r
 837 \r
 838 <p class="whs4">&nbsp;</p>\r
 839 \r
 840 <p class="whs5"># apply &quot;Max Element \r
 841  Area&quot; hypothesis to each triangle</p>\r
 842 \r
 843 <p class="whs4">algo.MaxElementArea(100)</p>\r
 844 \r
 845 <p class="whs4">&nbsp;</p>\r
 846 \r
 847 <p class="whs5"># compute the mesh</p>\r
 848 \r
 849 <p class="whs4">tria_mesh.Compute() \r
 850  &nbsp;</p>\r
 851 \r
 852 <p class="whs4">&nbsp;</p>\r
 853 \r
 854 <h4><a name=bookmark5>Maximum Element Volume</a></h4>\r
 855 \r
 856 <p class="whs4"><span style="font-family: 'Lucida Console', monospace;">import \r
 857  salome</span></p>\r
 858 \r
 859 <p class="whs4">import geompy</p>\r
 860 \r
 861 <p class="whs4">import StdMeshers</p>\r
 862 \r
 863 <p class="whs4">import NETGENPlugin</p>\r
 864 \r
 865 <p class="whs4">&nbsp;</p>\r
 866 \r
 867 <p class="whs4">smesh = salome.lcc.FindOrLoadComponent(&quot;FactoryServer&quot;, \r
 868  &quot;SMESH&quot;)</p>\r
 869 \r
 870 <p class="whs4">smeshgui = salome.ImportComponentGUI(&quot;SMESH&quot;)</p>\r
 871 \r
 872 <p class="whs4">smeshgui.Init(salome.myStudyId);</p>\r
 873 \r
 874 <p class="whs4">&nbsp;</p>\r
 875 \r
 876 <p class="whs5"># create a box</p>\r
 877 \r
 878 <p class="whs4">box = geompy.MakeCylinderRH(30, \r
 879  50) #MakeBox(0., 0., 0., </p>\r
 880 \r
 881 <p class="whs4">100., 200., 300.)</p>\r
 882 \r
 883 <p class="whs4">&nbsp;</p>\r
 884 \r
 885 <p class="whs5"># add the box in the \r
 886  study</p>\r
 887 \r
 888 <p class="whs4">idbox = geompy.addToStudy(box, \r
 889  &quot;box&quot;)</p>\r
 890 \r
 891 <p class="whs4">&nbsp;</p>\r
 892 \r
 893 <p class="whs5"># create a set of hypotheses</p>\r
 894 \r
 895 <p class="whs5">&nbsp;</p>\r
 896 \r
 897 <p class="whs5"># Number of Segments</p>\r
 898 \r
 899 <p class="whs4">numberOfSegments \r
 900  = 7</p>\r
 901 \r
 902 <p class="whs4">hypNbSeg = smesh.CreateHypothesis(&quot;NumberOfSegments&quot;, \r
 903  &quot;libStdMeshersEngine.so&quot;)</p>\r
 904 \r
 905 <p class="whs4">hypNbSeg.SetNumberOfSegments(numberOfSegments)</p>\r
 906 \r
 907 <p class="whs4">print hypNbSeg.GetName()</p>\r
 908 \r
 909 <p class="whs4">print hypNbSeg.GetNumberOfSegments()</p>\r
 910 \r
 911 <p class="whs4">smeshgui.SetName(salome.ObjectToID(hypNbSeg), \r
 912  &quot;NumberOfSegments_7&quot;)</p>\r
 913 \r
 914 <p class="whs4">&nbsp;</p>\r
 915 \r
 916 <p class="whs5"># Max Element Area</p>\r
 917 \r
 918 <p class="whs4">maxElementArea = \r
 919  800</p>\r
 920 \r
 921 <p class="whs4">hypArea = smesh.CreateHypothesis(&quot;MaxElementArea&quot;, \r
 922  &quot;libStdMeshersEngine.so&quot;)</p>\r
 923 \r
 924 <p class="whs4">hypArea.SetMaxElementArea(maxElementArea)</p>\r
 925 \r
 926 <p class="whs4">print hypArea.GetName()</p>\r
 927 \r
 928 <p class="whs4">print hypArea.GetMaxElementArea()</p>\r
 929 \r
 930 <p class="whs4">smeshgui.SetName(salome.ObjectToID(hypArea), \r
 931  &quot;MaxElementArea_800&quot;)</p>\r
 932 \r
 933 <p class="whs4">&nbsp;</p>\r
 934 \r
 935 <p class="whs5"># Max Element Volume</p>\r
 936 \r
 937 <p class="whs4">maxElementVolume \r
 938  = 900</p>\r
 939 \r
 940 <p class="whs4">hypVolume = smesh.CreateHypothesis(&quot;MaxElementVolume&quot;, \r
 941  &quot;libStdMeshersEngine.so&quot;)</p>\r
 942 \r
 943 <p class="whs4">hypVolume.SetMaxElementVolume(maxElementVolume)</p>\r
 944 \r
 945 <p class="whs4">print hypVolume.GetName()</p>\r
 946 \r
 947 <p class="whs4">print hypVolume.GetMaxElementVolume()</p>\r
 948 \r
 949 <p class="whs4">smeshgui.SetName(salome.ObjectToID(hypVolume), \r
 950  &quot;MaxElementVolume_900&quot;)</p>\r
 951 \r
 952 <p class="whs4">&nbsp;</p>\r
 953 \r
 954 <p class="whs5"># create a set of algorithms</p>\r
 955 \r
 956 <p class="whs5">&nbsp;</p>\r
 957 \r
 958 <p class="whs5"># Regular_1D</p>\r
 959 \r
 960 <p class="whs4">regular1D = smesh.CreateHypothesis(&quot;Regular_1D&quot;, \r
 961  &quot;libStdMeshersEngine.so&quot;)</p>\r
 962 \r
 963 <p class="whs4">smeshgui.SetName(salome.ObjectToID(regular1D), \r
 964  &quot;Wire Discretisation&quot;)</p>\r
 965 \r
 966 <p class="whs4">&nbsp;</p>\r
 967 \r
 968 <p class="whs5"># MEFISTO_2D</p>\r
 969 \r
 970 <p class="whs4">mefisto2D = smesh.CreateHypothesis(&quot;MEFISTO_2D&quot;, \r
 971  &quot;libStdMeshersEngine.so&quot;)</p>\r
 972 \r
 973 <p class="whs4">smeshgui.SetName(salome.ObjectToID(mefisto2D), \r
 974  &quot;MEFISTO_2D&quot;)</p>\r
 975 \r
 976 <p class="whs4">&nbsp;</p>\r
 977 \r
 978 <p class="whs5"># NETGEN_3D (Tetrahedron \r
 979  meshing algorithm)</p>\r
 980 \r
 981 <p class="whs4">tetra3D = smesh.CreateHypothesis(&quot;NETGEN_3D&quot;, \r
 982  &quot;libNETGENEngine.so&quot;)</p>\r
 983 \r
 984 <p class="whs4">smeshgui.SetName(salome.ObjectToID(tetra3D), \r
 985  &quot;NETGEN_3D&quot;)</p>\r
 986 \r
 987 <p class="whs4">&nbsp;</p>\r
 988 \r
 989 <p class="whs5"># initialize a mesh \r
 990  with the box</p>\r
 991 \r
 992 <p class="whs4">mesh = smesh.CreateMesh(box)</p>\r
 993 \r
 994 <p class="whs4">smeshgui.SetName(salome.ObjectToID(mesh), \r
 995  &quot;MeshBox&quot;)</p>\r
 996 \r
 997 <p class="whs4">&nbsp;</p>\r
 998 \r
 999 <p class="whs5"># add hypotheses and \r
1000  algorithms to the box</p>\r
1001 \r
1002 <p class="whs4">mesh.AddHypothesis(box,hypNbSeg)</p>\r
1003 \r
1004 <p class="whs4">mesh.AddHypothesis(box,hypArea)</p>\r
1005 \r
1006 <p class="whs4">mesh.AddHypothesis(box,hypVolume)</p>\r
1007 \r
1008 <p class="whs4">mesh.AddHypothesis(box,regular1D)</p>\r
1009 \r
1010 <p class="whs4">mesh.AddHypothesis(box,mefisto2D)</p>\r
1011 \r
1012 <p class="whs4">mesh.AddHypothesis(box,tetra3D)</p>\r
1013 \r
1014 <p class="whs4">&nbsp;</p>\r
1015 \r
1016 <p class="whs5"># compute the mesh</p>\r
1017 \r
1018 <p class="whs4">ret = smesh.Compute(mesh,box)</p>\r
1019 \r
1020 <p class="whs4">if ret == 0:</p>\r
1021 \r
1022 <p class="whs4">&nbsp;&nbsp;&nbsp;&nbsp;print \r
1023  &quot;probleme when computing the mesh&quot;</p>\r
1024 \r
1025 <p class="whs4">else:</p>\r
1026 \r
1027 <p class="whs4">&nbsp;&nbsp;&nbsp;&nbsp;print \r
1028  &quot;Computation succeded&quot;</p>\r
1029 \r
1030 <p class="whs4">salome.sg.updateObjBrowser(1) \r
1031  </p>\r
1032 \r
1033 <p class="whs4">&nbsp;</p>\r
1034 \r
1035 <h4><a name=bookmark6>Length from Edges</a></h4>\r
1036 \r
1037 <p class="whs2"><span style="font-family: 'Lucida Console', monospace;">import \r
1038  salome</span></p>\r
1039 \r
1040 <p class="whs2">import geompy</p>\r
1041 \r
1042 <p class="whs2">import smesh</p>\r
1043 \r
1044 <p class="whs2">&nbsp;</p>\r
1045 \r
1046 <p class="whs3"># create sketchers</p>\r
1047 \r
1048 <p class="whs2">sketcher1 = geompy.MakeSketcher(&quot;Sketcher:F \r
1049  0 0:TT 70 0:TT 70 70:TT 0 70:WW&quot;)</p>\r
1050 \r
1051 <p class="whs2">sketcher2 = geompy.MakeSketcher(&quot;Sketcher:F \r
1052  20 20:TT 50 20:TT 50 50:TT 20 50:WW&quot;)</p>\r
1053 \r
1054 <p class="whs2">isPlanarFace = 1</p>\r
1055 \r
1056 <p class="whs2">&nbsp;</p>\r
1057 \r
1058 <p class="whs3"># create a face from \r
1059  two wires</p>\r
1060 \r
1061 <p class="whs2">face1 = geompy.MakeFaces([sketcher1, \r
1062  sketcher2],isPlanarFace)</p>\r
1063 \r
1064 <p class="whs2">&nbsp;</p>\r
1065 \r
1066 <p class="whs3"># add object in the study</p>\r
1067 \r
1068 <p class="whs2">id_face1 = geompy.addToStudy(face1,&quot;Face1&quot;)</p>\r
1069 \r
1070 <p class="whs2">&nbsp;</p>\r
1071 \r
1072 <p class="whs3"># create a mesh</p>\r
1073 \r
1074 <p class="whs2">tria = smesh.Mesh(face1, \r
1075  &quot;Face : triangle 2D mesh&quot;)</p>\r
1076 \r
1077 <p class="whs2">&nbsp;</p>\r
1078 \r
1079 <p class="whs3"># Define 1D meshing</p>\r
1080 \r
1081 <p class="whs2">algo = tria.Segment()</p>\r
1082 \r
1083 <p class="whs2">algo.NumberOfSegments(2)</p>\r
1084 \r
1085 <p class="whs2">&nbsp;</p>\r
1086 \r
1087 <p class="whs3"># create and assign the \r
1088  algorithm for 2D meshing with triangles</p>\r
1089 \r
1090 <p class="whs2">algo = tria.Triangle()</p>\r
1091 \r
1092 <p class="whs2">&nbsp;</p>\r
1093 \r
1094 <p class="whs3"># create and assign &quot;LengthFromEdges&quot; \r
1095  hypothesis to build triangles </p>\r
1096 \r
1097 <p class="whs3"># based on the length \r
1098  of the edges taken from the wire</p>\r
1099 \r
1100 <p class="whs2">algo.LengthFromEdges()</p>\r
1101 \r
1102 <p class="whs2">&nbsp;</p>\r
1103 \r
1104 <p class="whs3"># compute the mesh</p>\r
1105 \r
1106 <p class="whs2">tria.Compute() </p>\r
1107 \r
1108 <p class="whs2">&nbsp;</p>\r
1109 \r
1110 <h3>Defining Additional Hypotheses</h3>\r
1111 \r
1112 <h4><a name=bookmark7>Propagation</a></h4>\r
1113 \r
1114 <p class="whs2"><span style="font-family: 'Lucida Console', monospace;">from \r
1115  geompy import *</span></p>\r
1116 \r
1117 <p class="whs2">import smesh</p>\r
1118 \r
1119 <p class="whs2">&nbsp;</p>\r
1120 \r
1121 <p class="whs3"># create vertices</p>\r
1122 \r
1123 <p class="whs2">Point111 = MakeVertex( \r
1124  0, &nbsp;0, &nbsp;0)</p>\r
1125 \r
1126 <p class="whs2">Point211 = MakeVertex(10, \r
1127  &nbsp;0, &nbsp;0)</p>\r
1128 \r
1129 <p class="whs2">Point121 = MakeVertex( \r
1130  0, 10, &nbsp;0)</p>\r
1131 \r
1132 <p class="whs2">Point221 = MakeVertex(10, \r
1133  10, &nbsp;0)</p>\r
1134 \r
1135 <p class="whs2">Point112 = MakeVertex( \r
1136  0, &nbsp;0, 10)</p>\r
1137 \r
1138 <p class="whs2">Point212 = MakeVertex(10, \r
1139  &nbsp;0, 10)</p>\r
1140 \r
1141 <p class="whs2">Point122 = MakeVertex( \r
1142  0, 10, 10)</p>\r
1143 \r
1144 <p class="whs2">Point222 = MakeVertex(10, \r
1145  10, 10)</p>\r
1146 \r
1147 <p class="whs2">&nbsp;</p>\r
1148 \r
1149 <p class="whs3"># create edges</p>\r
1150 \r
1151 <p class="whs2">EdgeX111 = MakeEdge(Point111, \r
1152  Point211)</p>\r
1153 \r
1154 <p class="whs2">EdgeX121 = MakeEdge(Point121, \r
1155  Point221)</p>\r
1156 \r
1157 <p class="whs2">EdgeX112 = MakeEdge(Point112, \r
1158  Point212)</p>\r
1159 \r
1160 <p class="whs2">EdgeX122 = MakeEdge(Point122, \r
1161  Point222)</p>\r
1162 \r
1163 <p class="whs2">EdgeY11 = MakeEdge(Point111, \r
1164  Point121)</p>\r
1165 \r
1166 <p class="whs2">EdgeY21 = MakeEdge(Point211, \r
1167  Point221)</p>\r
1168 \r
1169 <p class="whs2">EdgeY12 = MakeEdge(Point112, \r
1170  Point122)</p>\r
1171 \r
1172 <p class="whs2">EdgeY22 = MakeEdge(Point212, \r
1173  Point222)</p>\r
1174 \r
1175 <p class="whs2">EdgeZ111 = MakeEdge(Point111, \r
1176  Point112)</p>\r
1177 \r
1178 <p class="whs2">EdgeZ211 = MakeEdge(Point211, \r
1179  Point212)</p>\r
1180 \r
1181 <p class="whs2">EdgeZ121 = MakeEdge(Point121, \r
1182  Point122)</p>\r
1183 \r
1184 <p class="whs2">EdgeZ221 = MakeEdge(Point221, \r
1185  Point222)</p>\r
1186 \r
1187 <p class="whs2">&nbsp;</p>\r
1188 \r
1189 <p class="whs3"># create faces</p>\r
1190 \r
1191 <p class="whs2">FaceX11 = MakeQuad(EdgeY11, \r
1192  EdgeZ111, EdgeY12, EdgeZ121)</p>\r
1193 \r
1194 <p class="whs2">FaceX21 = MakeQuad(EdgeY21, \r
1195  EdgeZ211, EdgeY22, EdgeZ221)</p>\r
1196 \r
1197 <p class="whs2">FaceY111 = MakeQuad(EdgeX111, \r
1198  EdgeZ111, EdgeX112, EdgeZ211)</p>\r
1199 \r
1200 <p class="whs2">FaceY121 = MakeQuad(EdgeX121, \r
1201  EdgeZ121, EdgeX122, EdgeZ221)</p>\r
1202 \r
1203 <p class="whs2">FaceZ11 = MakeQuad(EdgeX111, \r
1204  EdgeY11, EdgeX121, EdgeY21)</p>\r
1205 \r
1206 <p class="whs2">FaceZ12 = MakeQuad(EdgeX112, \r
1207  EdgeY12, EdgeX122, EdgeY22)</p>\r
1208 \r
1209 <p class="whs2">&nbsp;</p>\r
1210 \r
1211 <p class="whs3"># create a solid</p>\r
1212 \r
1213 <p class="whs2">box = MakeHexa(FaceX11, \r
1214  FaceX21, FaceY111, FaceY121, FaceZ11, FaceZ12)</p>\r
1215 \r
1216 <p class="whs2">&nbsp;</p>\r
1217 \r
1218 <p class="whs3"># add in the study</p>\r
1219 \r
1220 <p class="whs2">box_id = addToStudy(box, \r
1221  &quot;Box&quot;)</p>\r
1222 \r
1223 <p class="whs2">&nbsp;</p>\r
1224 \r
1225 <p class="whs3"># create a hexahedral \r
1226  mesh on the box</p>\r
1227 \r
1228 <p class="whs2">hexa = smesh.Mesh(box, \r
1229  &quot;Box : hexahedrical mesh&quot;)</p>\r
1230 \r
1231 <p class="whs2">&nbsp;</p>\r
1232 \r
1233 <p class="whs3"># create an 1D algorithm \r
1234  for edges</p>\r
1235 \r
1236 <p class="whs2">algo = hexa.Segment()</p>\r
1237 \r
1238 <p class="whs2">&nbsp;</p>\r
1239 \r
1240 <p class="whs3"># define &quot;NumberOfSegments&quot; \r
1241  hypothesis to cut an edge in a fixed number of segments</p>\r
1242 \r
1243 <p class="whs2">algo.NumberOfSegments(4)</p>\r
1244 \r
1245 <p class="whs2">&nbsp;</p>\r
1246 \r
1247 <p class="whs3"># create a quadrangle \r
1248  2D algorithm for faces</p>\r
1249 \r
1250 <p class="whs2">hexa.Quadrangle()</p>\r
1251 \r
1252 <p class="whs2">&nbsp;</p>\r
1253 \r
1254 <p class="whs3"># create a hexahedron \r
1255  3D algorithm for solids</p>\r
1256 \r
1257 <p class="whs2">hexa.Hexahedron()</p>\r
1258 \r
1259 <p class="whs2">&nbsp;</p>\r
1260 \r
1261 <p class="whs3"># create a local hypothesis</p>\r
1262 \r
1263 <p class="whs2">algo = hexa.Segment(EdgeX111)</p>\r
1264 \r
1265 <p class="whs2">&nbsp;</p>\r
1266 \r
1267 <p class="whs3"># define &quot;Arithmetic1D&quot; \r
1268  hypothesis to cut an edge<span style="font-family: 'Times New Roman', serif;"> \r
1269  in several segments with increasing length</span></p>\r
1270 \r
1271 <p class="whs2">algo.Arithmetic1D(1, \r
1272  4)</p>\r
1273 \r
1274 <p class="whs2">&nbsp;</p>\r
1275 \r
1276 <p class="whs3"># define &quot;Propagation&quot; \r
1277  hypothesis that propagates all other 1D hypotheses</p>\r
1278 \r
1279 <p class="whs3"># from all edges on the \r
1280  opposite side of a face in case of quadrangular faces</p>\r
1281 \r
1282 <p class="whs2">algo.Propagation()</p>\r
1283 \r
1284 <p class="whs2">&nbsp;</p>\r
1285 \r
1286 <p class="whs3"># compute the mesh</p>\r
1287 \r
1288 <p class="whs2">hexa.Compute() &nbsp;</p>\r
1289 \r
1290 <h3><a name=bookmark8>Defining Meshing Algorithms</a></h3>\r
1291 \r
1292 <p class="whs4"><span style="font-family: 'Lucida Console', monospace;">import \r
1293  salome</span></p>\r
1294 \r
1295 <p class="whs4">import StdMeshers</p>\r
1296 \r
1297 <p class="whs4">import NETGENPlugin</p>\r
1298 \r
1299 <p class="whs4">&nbsp;</p>\r
1300 \r
1301 <p class="whs4">smesh = salome.lcc.FindOrLoadComponent(&quot;FactoryServer&quot;, \r
1302  &quot;SMESH&quot;)</p>\r
1303 \r
1304 <p class="whs4">smeshgui = salome.ImportComponentGUI(&quot;SMESH&quot;)</p>\r
1305 \r
1306 <p class="whs4">smeshgui.Init(salome.myStudyId);</p>\r
1307 \r
1308 <p class="whs6">&nbsp;</p>\r
1309 \r
1310 <p class="whs6"># create algorithms</p>\r
1311 \r
1312 <p class="whs4">print &quot;-------------------------- \r
1313  create Algorithms&quot;</p>\r
1314 \r
1315 <p class="whs4">print &quot;-------------------------- \r
1316  Regular_1D (Wire discretisation)&quot;</p>\r
1317 \r
1318 <p class="whs4">regular1D = smesh.CreateHypothesis(&quot;Regular_1D&quot;, \r
1319  &quot;libStdMeshersEngine.so&quot;)</p>\r
1320 \r
1321 <p class="whs4">smeshgui.SetName(salome.ObjectToID(regular1D), \r
1322  &quot;Wire Discretisation&quot;)</p>\r
1323 \r
1324 <p class="whs4">&nbsp;</p>\r
1325 \r
1326 <p class="whs4">print &quot;-------------------------- \r
1327  MEFISTO_2D (Triangle meshing algorithm)&quot;</p>\r
1328 \r
1329 <p class="whs4">mefisto2D = smesh.CreateHypothesis(&quot;MEFISTO_2D&quot;, \r
1330  &quot;libStdMeshersEngine.so&quot;)</p>\r
1331 \r
1332 <p class="whs4">smeshgui.SetName(salome.ObjectToID(mefisto2D), \r
1333  &quot;MEFISTO_2D&quot;)</p>\r
1334 \r
1335 <p class="whs4">&nbsp;</p>\r
1336 \r
1337 <p class="whs4">print &quot;-------------------------- \r
1338  Quadrangle_2D (Quadrangle meshing algorithm)&quot;</p>\r
1339 \r
1340 <p class="whs4">quad2D = smesh.CreateHypothesis( \r
1341  &quot;Quadrangle_2D&quot;, &quot;libStdMeshersEngine.so&quot; )</p>\r
1342 \r
1343 <p class="whs4">smeshgui.SetName(salome.ObjectToID(quad2D), \r
1344  &quot;Quadrangle_2D&quot;)</p>\r
1345 \r
1346 <p class="whs4">&nbsp;</p>\r
1347 \r
1348 <p class="whs4">print &quot;-------------------------- \r
1349  Hexa_3D (Hexahedron meshing algorithm)&quot;</p>\r
1350 \r
1351 <p class="whs4">hexa3D = smesh.CreateHypothesis(&quot;Hexa_3D&quot;, \r
1352  &quot;libStdMeshersEngine.so&quot;)</p>\r
1353 \r
1354 <p class="whs4">smeshgui.SetName(salome.ObjectToID(hexa3D), \r
1355  &quot;HEXA_3D&quot;)</p>\r
1356 \r
1357 <p class="whs4">&nbsp;</p>\r
1358 \r
1359 <p class="whs4">print &quot;-------------------------- \r
1360  NETGEN_3D (Tetrahedron meshing algorithm)&quot;</p>\r
1361 \r
1362 <p class="whs4">netgen3D = smesh.CreateHypothesis(&quot;NETGEN_3D&quot;, \r
1363  &quot;libNETGENEngine.so&quot;)</p>\r
1364 \r
1365 <p class="whs4">smeshgui.SetName(salome.ObjectToID(netgen3D), \r
1366  &quot;NETGEN_3D&quot;)</p>\r
1367 \r
1368 <p class="whs4">salome.sg.updateObjBrowser(1)</p>\r
1369 \r
1370 <p class="whs6">&nbsp;</p>\r
1371 \r
1372 <script type="text/javascript" language="javascript1.2">\r
1373 <!--\r
1374 if (window.writeIntopicBar)\r
1375         writeIntopicBar(0);\r
1376 //-->\r
1377 </script>\r
1378 </body>\r
1379 </html>\r