doc/salome/gui/SMESH/defining_hypotheses_tui.htm

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  91 <h1>Defining Hypotheses and Algorithms</h1>\r
  92 \r
  93 <h3>Defining 1D Hypotheses</h3>\r
  94 \r
  95 <p class="whs1"><a name=bookmark>1D Arithmetic</a></p>\r
  96 \r
  97 <p>&nbsp;</p>\r
  98 \r
  99 <p class="whs2">from geompy import \r
 100  *</p>\r
 101 \r
 102 <p class="whs2">import smesh</p>\r
 103 \r
 104 <p>&nbsp;</p>\r
 105 \r
 106 <p># create vertices</p>\r
 107 \r
 108 <p class="whs2">Point111 = MakeVertex( \r
 109  0, &nbsp;0, &nbsp;0)</p>\r
 110 \r
 111 <p class="whs2">Point211 = MakeVertex(10, \r
 112  &nbsp;0, &nbsp;0)</p>\r
 113 \r
 114 <p class="whs2">Point121 = MakeVertex( \r
 115  0, 10, &nbsp;0)</p>\r
 116 \r
 117 <p class="whs2">Point221 = MakeVertex(10, \r
 118  10, &nbsp;0)</p>\r
 119 \r
 120 <p class="whs2">Point112 = MakeVertex( \r
 121  0, &nbsp;0, 10)</p>\r
 122 \r
 123 <p class="whs2">Point212 = MakeVertex(10, \r
 124  &nbsp;0, 10)</p>\r
 125 \r
 126 <p class="whs2">Point122 = MakeVertex( \r
 127  0, 10, 10)</p>\r
 128 \r
 129 <p class="whs2">Point222 = MakeVertex(10, \r
 130  10, 10)</p>\r
 131 \r
 132 <p>&nbsp;</p>\r
 133 \r
 134 <p># create edges</p>\r
 135 \r
 136 <p class="whs2">EdgeX111 = MakeEdge(Point111, \r
 137  Point211)</p>\r
 138 \r
 139 <p class="whs2">EdgeX121 = MakeEdge(Point121, \r
 140  Point221)</p>\r
 141 \r
 142 <p class="whs2">EdgeX112 = MakeEdge(Point112, \r
 143  Point212)</p>\r
 144 \r
 145 <p class="whs2">EdgeX122 = MakeEdge(Point122, \r
 146  Point222)</p>\r
 147 \r
 148 <p class="whs2">EdgeY11 = MakeEdge(Point111, \r
 149  Point121)</p>\r
 150 \r
 151 <p class="whs2">EdgeY21 = MakeEdge(Point211, \r
 152  Point221)</p>\r
 153 \r
 154 <p class="whs2">EdgeY12 = MakeEdge(Point112, \r
 155  Point122)</p>\r
 156 \r
 157 <p class="whs2">EdgeY22 = MakeEdge(Point212, \r
 158  Point222)</p>\r
 159 \r
 160 <p class="whs2">EdgeZ111 = MakeEdge(Point111, \r
 161  Point112)</p>\r
 162 \r
 163 <p class="whs2">EdgeZ211 = MakeEdge(Point211, \r
 164  Point212)</p>\r
 165 \r
 166 <p class="whs2">EdgeZ121 = MakeEdge(Point121, \r
 167  Point122)</p>\r
 168 \r
 169 <p class="whs2">EdgeZ221 = MakeEdge(Point221, \r
 170  Point222)</p>\r
 171 \r
 172 <p>&nbsp;</p>\r
 173 \r
 174 <p># create faces</p>\r
 175 \r
 176 <p class="whs2">FaceX11 = MakeQuad(EdgeY11, \r
 177  EdgeZ111, EdgeY12, EdgeZ121)</p>\r
 178 \r
 179 <p class="whs2">FaceX21 = MakeQuad(EdgeY21, \r
 180  EdgeZ211, EdgeY22, EdgeZ221)</p>\r
 181 \r
 182 <p class="whs2">FaceY111 = MakeQuad(EdgeX111, \r
 183  EdgeZ111, EdgeX112, EdgeZ211)</p>\r
 184 \r
 185 <p class="whs2">FaceY121 = MakeQuad(EdgeX121, \r
 186  EdgeZ121, EdgeX122, EdgeZ221)</p>\r
 187 \r
 188 <p class="whs2">FaceZ11 = MakeQuad(EdgeX111, \r
 189  EdgeY11, EdgeX121, EdgeY21)</p>\r
 190 \r
 191 <p class="whs2">FaceZ12 = MakeQuad(EdgeX112, \r
 192  EdgeY12, EdgeX122, EdgeY22)</p>\r
 193 \r
 194 <p>&nbsp;</p>\r
 195 \r
 196 <p># create a solid</p>\r
 197 \r
 198 <p class="whs2">Block = MakeHexa(FaceX11, \r
 199  FaceX21, FaceY111, FaceY121, FaceZ11, FaceZ12)</p>\r
 200 \r
 201 <p>&nbsp;</p>\r
 202 \r
 203 <p># create a compound</p>\r
 204 \r
 205 <p class="whs2">box = MakeCompound([Block])</p>\r
 206 \r
 207 <p>&nbsp;</p>\r
 208 \r
 209 <p># add in the study</p>\r
 210 \r
 211 <p class="whs2">box_id = addToStudy(box, \r
 212  &quot;Box compound&quot;)</p>\r
 213 \r
 214 <p>&nbsp;</p>\r
 215 \r
 216 <p># create a hexahedral mesh on the box</p>\r
 217 \r
 218 <p class="whs2">hexa = smesh.Mesh(box, \r
 219  &quot;Box compound : hexahedrical mesh&quot;)</p>\r
 220 \r
 221 <p class="whs2">algo = hexa.Segment()</p>\r
 222 \r
 223 <p>&nbsp;</p>\r
 224 \r
 225 <p># define &quot;NumberOfSegments&quot; hypothesis to cut an edge in a \r
 226  fixed number of segments</p>\r
 227 \r
 228 <p class="whs2">algo.NumberOfSegments(4)</p>\r
 229 \r
 230 <p>&nbsp;</p>\r
 231 \r
 232 <p># create a quadrangle 2D algorithm for faces</p>\r
 233 \r
 234 <p class="whs2">hexa.Quadrangle()</p>\r
 235 \r
 236 <p>&nbsp;</p>\r
 237 \r
 238 <p># create a hexahedron 3D algorithm for solids</p>\r
 239 \r
 240 <p class="whs2">hexa.Hexahedron()</p>\r
 241 \r
 242 <p>&nbsp;</p>\r
 243 \r
 244 <p># create a local hypothesis</p>\r
 245 \r
 246 <p class="whs2">algo = hexa.Segment(EdgeX111)</p>\r
 247 \r
 248 <p>&nbsp;</p>\r
 249 \r
 250 <p># define &quot;Arithmetic1D&quot; hypothesis to cut an edge in several \r
 251  segments with arithmetic length increasing</p>\r
 252 \r
 253 <p class="whs2">algo.Arithmetic1D(1, \r
 254  4)</p>\r
 255 \r
 256 <p>&nbsp;</p>\r
 257 \r
 258 <p># define &quot;Propagation&quot; hypothesis that propagates all other \r
 259  hypothesis on all edges on the opposite side in case of quadrangular faces</p>\r
 260 \r
 261 <p class="whs2">algo.Propagation()</p>\r
 262 \r
 263 <p>&nbsp;</p>\r
 264 \r
 265 <p># compute the mesh</p>\r
 266 \r
 267 <p class="whs2">hexa.Compute() </p>\r
 268 \r
 269 <p class="whs2">&nbsp;</p>\r
 270 \r
 271 <h4><a name=bookmark9>Deflection 1D and Number of Segments</a></h4>\r
 272 \r
 273 <p class="whs2">&nbsp;</p>\r
 274 \r
 275 <p class="whs2">import smesh</p>\r
 276 \r
 277 <p class="whs2">import geompy</p>\r
 278 \r
 279 <p class="whs2">import salome</p>\r
 280 \r
 281 <p class="whs2">gg = salome.ImportComponentGUI(&quot;GEOM&quot;)</p>\r
 282 \r
 283 <p class="whs2">&nbsp;</p>\r
 284 \r
 285 <p class="whs3"># create vertices</p>\r
 286 \r
 287 <p class="whs2">px &nbsp;&nbsp;=geompy.MakeVertex(100., 0. &nbsp;,0. &nbsp;)</p>\r
 288 \r
 289 <p class="whs2">py &nbsp;&nbsp;=geompy.MakeVertex(0. &nbsp;,100., 0. &nbsp;)</p>\r
 290 \r
 291 <p class="whs2">pz &nbsp;&nbsp;=geompy.MakeVertex(0. &nbsp;,0. &nbsp;, 100.)</p>\r
 292 \r
 293 <p class="whs2">&nbsp;</p>\r
 294 \r
 295 <p class="whs3"># create a vector from \r
 296  two points</p>\r
 297 \r
 298 <p class="whs2">vxy = geompy.MakeVector(px,py)</p>\r
 299 \r
 300 <p class="whs2">&nbsp;</p>\r
 301 \r
 302 <p class="whs3"># create an arc from \r
 303  three points</p>\r
 304 \r
 305 <p class="whs2">arc = geompy.MakeArc(py, pz, px)</p>\r
 306 \r
 307 <p class="whs2">&nbsp;</p>\r
 308 \r
 309 <p class="whs3"># create a wire</p>\r
 310 \r
 311 <p class="whs2">wire = geompy.MakeWire([vxy,arc])</p>\r
 312 \r
 313 <p class="whs2">isPlanarFace = 1</p>\r
 314 \r
 315 <p class="whs2">&nbsp;</p>\r
 316 \r
 317 <p class="whs3"># create a face from the wire</p>\r
 318 \r
 319 <p class="whs2">face1 = geompy.MakeFace(wire,isPlanarFace)</p>\r
 320 \r
 321 <p class="whs2">&nbsp;</p>\r
 322 \r
 323 <p class="whs3"># get edges from the face</p>\r
 324 \r
 325 <p class="whs2">vxy, arc = geompy.SubShapeAll(face1, geompy.ShapeType["EDGE"])</p>\r
 326 \r
 327 <p class="whs2">&nbsp;</p>\r
 328 \r
 329 <p class="whs3"># add objects in the study</p>\r
 330 \r
 331 <p class="whs2">id_face1 = geompy.addToStudy(face1,&quot;Face1&quot;)</p>\r
 332 \r
 333 <p class="whs2">id_arc = geompy.addToStudyInFather(face1,arc,&quot;Arc Edge&quot;)</p>\r
 334 \r
 335 <p class="whs2">&nbsp;</p>\r
 336 \r
 337 <p class="whs3"># display faces</p>\r
 338 \r
 339 <p class="whs2">gg.createAndDisplayGO(id_face1)</p>\r
 340 \r
 341 <p class="whs2">gg.setDisplayMode(id_face1,1)</p>\r
 342 \r
 343 <p class="whs2">gg.setTransparency(id_face1,0.2)</p>\r
 344 \r
 345 <p class="whs2">&nbsp;</p>\r
 346 \r
 347 <p class="whs3"># create hexahedral mesh</p>\r
 348 \r
 349 <p class="whs2">hexa = smesh.Mesh(face1,&quot;Face compound : hexahedrical mesh&quot;)</p>\r
 350 \r
 351 <p class="whs2">algo = hexa.Triangle()</p>\r
 352 \r
 353 <p class="whs2">&nbsp;</p>\r
 354 \r
 355 <p class="whs3"># define &quot;MaxElementArea&quot;hypothesis</p>\r
 356 \r
 357 <p class="whs2">algo.MaxElementArea(30)</p>\r
 358 \r
 359 <p class="whs2">&nbsp;</p>\r
 360 \r
 361 <p class="whs3"># create a local hypothesis on the wire</p>\r
 362 \r
 363 <p class="whs2">algo = hexa.Segment(wire)</p>\r
 364 \r
 365 <p class="whs2">&nbsp;</p>\r
 366 \r
 367 <p class="whs3"># define &quot;NumberOfSegments&quot;hypothesis to cut\r
 368 a straight edge in a fixed number of segments</p>\r
 369 \r
 370 <p class="whs2">algo.NumberOfSegments(6)</p>\r
 371 \r
 372 <p class="whs2">&nbsp;</p>\r
 373 \r
 374 <p class="whs3"># define a local &quot;Deflection1D&quot;hypothesis on the arc</p>\r
 375 \r
 376 <p class="whs2">algo = hexa.Segment(arc)</p>\r
 377 <p class="whs2">algo.Deflection1D(1)</p>\r
 378 \r
 379 <p class="whs2">&nbsp;</p>\r
 380 \r
 381 <p class="whs3"># compute the mesh</p>\r
 382 \r
 383 <p class="whs2">hexa.Compute() </p>\r
 384 \r
 385 <p>&nbsp;</p>\r
 386 \r
 387 <h4><a name=bookmark2>Start and End Length</a></h4>\r
 388 \r
 389 <p class="whs2">from geompy import \r
 390  *</p>\r
 391 \r
 392 <p class="whs2">import smesh</p>\r
 393 \r
 394 <p>&nbsp;</p>\r
 395 \r
 396 <p># create vertices</p>\r
 397 \r
 398 <p class="whs2">Point111 = MakeVertex( \r
 399  0, &nbsp;0, &nbsp;0)</p>\r
 400 \r
 401 <p class="whs2">Point211 = MakeVertex(10, \r
 402  &nbsp;0, &nbsp;0)</p>\r
 403 \r
 404 <p class="whs2">Point121 = MakeVertex( \r
 405  0, 10, &nbsp;0)</p>\r
 406 \r
 407 <p class="whs2">Point221 = MakeVertex(10, \r
 408  10, &nbsp;0)</p>\r
 409 \r
 410 <p class="whs2">Point112 = MakeVertex( \r
 411  0, &nbsp;0, 10)</p>\r
 412 \r
 413 <p class="whs2">Point212 = MakeVertex(10, \r
 414  &nbsp;0, 10)</p>\r
 415 \r
 416 <p class="whs2">Point122 = MakeVertex( \r
 417  0, 10, 10)</p>\r
 418 \r
 419 <p class="whs2">Point222 = MakeVertex(10, \r
 420  10, 10)</p>\r
 421 \r
 422 <p>&nbsp;</p>\r
 423 \r
 424 <p># create edges</p>\r
 425 \r
 426 <p class="whs2">EdgeX111 = MakeEdge(Point111, \r
 427  Point211)</p>\r
 428 \r
 429 <p class="whs2">EdgeX121 = MakeEdge(Point121, \r
 430  Point221)</p>\r
 431 \r
 432 <p class="whs2">EdgeX112 = MakeEdge(Point112, \r
 433  Point212)</p>\r
 434 \r
 435 <p class="whs2">EdgeX122 = MakeEdge(Point122, \r
 436  Point222)</p>\r
 437 \r
 438 <p class="whs2">EdgeY11 = MakeEdge(Point111, \r
 439  Point121)</p>\r
 440 \r
 441 <p class="whs2">EdgeY21 = MakeEdge(Point211, \r
 442  Point221)</p>\r
 443 \r
 444 <p class="whs2">EdgeY12 = MakeEdge(Point112, \r
 445  Point122)</p>\r
 446 \r
 447 <p class="whs2">EdgeY22 = MakeEdge(Point212, \r
 448  Point222)</p>\r
 449 \r
 450 <p class="whs2">EdgeZ111 = MakeEdge(Point111, \r
 451  Point112)</p>\r
 452 \r
 453 <p class="whs2">EdgeZ211 = MakeEdge(Point211, \r
 454  Point212)</p>\r
 455 \r
 456 <p class="whs2">EdgeZ121 = MakeEdge(Point121, \r
 457  Point122)</p>\r
 458 \r
 459 <p class="whs2">EdgeZ221 = MakeEdge(Point221, \r
 460  Point222)</p>\r
 461 \r
 462 <p>&nbsp;</p>\r
 463 \r
 464 <p># create faces</p>\r
 465 \r
 466 <p class="whs2">FaceX11 = MakeQuad(EdgeY11, \r
 467  EdgeZ111, EdgeY12, EdgeZ121)</p>\r
 468 \r
 469 <p class="whs2">FaceX21 = MakeQuad(EdgeY21, \r
 470  EdgeZ211, EdgeY22, EdgeZ221)</p>\r
 471 \r
 472 <p class="whs2">FaceY111 = MakeQuad(EdgeX111, \r
 473  EdgeZ111, EdgeX112, EdgeZ211)</p>\r
 474 \r
 475 <p class="whs2">FaceY121 = MakeQuad(EdgeX121, \r
 476  EdgeZ121, EdgeX122, EdgeZ221)</p>\r
 477 \r
 478 <p class="whs2">FaceZ11 = MakeQuad(EdgeX111, \r
 479  EdgeY11, EdgeX121, EdgeY21)</p>\r
 480 \r
 481 <p class="whs2">FaceZ12 = MakeQuad(EdgeX112, \r
 482  EdgeY12, EdgeX122, EdgeY22)</p>\r
 483 \r
 484 <p>&nbsp;</p>\r
 485 \r
 486 <p># create a solid</p>\r
 487 \r
 488 <p class="whs2">Block = MakeHexa(FaceX11, \r
 489  FaceX21, FaceY111, FaceY121, FaceZ11, FaceZ12)</p>\r
 490 \r
 491 <p>&nbsp;</p>\r
 492 \r
 493 <p># create a compound</p>\r
 494 \r
 495 <p class="whs2">box = MakeCompound([Block])</p>\r
 496 \r
 497 <p>&nbsp;</p>\r
 498 \r
 499 <p># add in the study</p>\r
 500 \r
 501 <p class="whs2">box_id = addToStudy(box, \r
 502  &quot;Box compound&quot;)</p>\r
 503 \r
 504 <p>&nbsp;</p>\r
 505 \r
 506 <p># create a hexahedral mesh on the box</p>\r
 507 \r
 508 <p class="whs2">hexa = smesh.Mesh(box, \r
 509  &quot;Box compound : hexahedrical mesh&quot;)</p>\r
 510 \r
 511 <p class="whs2">algo = hexa.Segment()</p>\r
 512 \r
 513 <p>&nbsp;</p>\r
 514 \r
 515 <p># define &quot;NumberOfSegments&quot; hypothesis to cut an edge in a \r
 516  fixed number of segments</p>\r
 517 \r
 518 <p class="whs2">algo.NumberOfSegments(4)</p>\r
 519 \r
 520 <p>&nbsp;</p>\r
 521 \r
 522 <p># create a quadrangle 2D algorithm for faces</p>\r
 523 \r
 524 <p class="whs2">hexa.Quadrangle()</p>\r
 525 \r
 526 <p>&nbsp;</p>\r
 527 \r
 528 <p># create a hexahedron 3D algorithm for solids</p>\r
 529 \r
 530 <p class="whs2">hexa.Hexahedron()</p>\r
 531 \r
 532 <p>&nbsp;</p>\r
 533 \r
 534 <p># create a local hypothesis</p>\r
 535 \r
 536 <p class="whs2">algo = hexa.Segment(EdgeX111)</p>\r
 537 \r
 538 <p>&nbsp;</p>\r
 539 \r
 540 <p># define &quot;StartEndLength&quot; hypothesis to cut an edge in several \r
 541  segments with increasing geometric length </p>\r
 542 \r
 543 <p class="whs2">algo.StartEndLength(1, \r
 544  6)</p>\r
 545 \r
 546 <p>&nbsp;</p>\r
 547 \r
 548 <p># define &quot;Propagation&quot; hypothesis that propagates all other \r
 549  hypothesis on all edges on the opposite side in case of quadrangular faces</p>\r
 550 \r
 551 <p class="whs2">algo.Propagation()</p>\r
 552 \r
 553 <p>&nbsp;</p>\r
 554 \r
 555 <p># compute the mesh</p>\r
 556 \r
 557 <p class="whs2">hexa.Compute() </p>\r
 558 \r
 559 <p class="whs2">&nbsp;</p>\r
 560 \r
 561 <h4><a name=bookmark3>Average Length</a></h4>\r
 562 \r
 563 <p class="whs2">from geompy import \r
 564  *</p>\r
 565 \r
 566 <p class="whs2">import smesh</p>\r
 567 \r
 568 <p class="whs2">&nbsp;</p>\r
 569 \r
 570 <p class="whs3"># create vertices</p>\r
 571 \r
 572 <p class="whs2">Point111 = MakeVertex( \r
 573  0, &nbsp;0, &nbsp;0)</p>\r
 574 \r
 575 <p class="whs2">Point211 = MakeVertex(10, \r
 576  &nbsp;0, &nbsp;0)</p>\r
 577 \r
 578 <p class="whs2">Point121 = MakeVertex( \r
 579  0, 10, &nbsp;0)</p>\r
 580 \r
 581 <p class="whs2">Point221 = MakeVertex(10, \r
 582  10, &nbsp;0)</p>\r
 583 \r
 584 <p class="whs2">Point112 = MakeVertex( \r
 585  0, &nbsp;0, 10)</p>\r
 586 \r
 587 <p class="whs2">Point212 = MakeVertex(10, \r
 588  &nbsp;0, 10)</p>\r
 589 \r
 590 <p class="whs2">Point122 = MakeVertex( \r
 591  0, 10, 10)</p>\r
 592 \r
 593 <p class="whs2">Point222 = MakeVertex(10, \r
 594  10, 10)</p>\r
 595 \r
 596 <p class="whs2">&nbsp;</p>\r
 597 \r
 598 <p class="whs3"># create edges</p>\r
 599 \r
 600 <p class="whs2">EdgeX111 = MakeEdge(Point111, \r
 601  Point211)</p>\r
 602 \r
 603 <p class="whs2">EdgeX121 = MakeEdge(Point121, \r
 604  Point221)</p>\r
 605 \r
 606 <p class="whs2">EdgeX112 = MakeEdge(Point112, \r
 607  Point212)</p>\r
 608 \r
 609 <p class="whs2">EdgeX122 = MakeEdge(Point122, \r
 610  Point222)</p>\r
 611 \r
 612 <p class="whs2">EdgeY11 = MakeEdge(Point111, \r
 613  Point121)</p>\r
 614 \r
 615 <p class="whs2">EdgeY21 = MakeEdge(Point211, \r
 616  Point221)</p>\r
 617 \r
 618 <p class="whs2">EdgeY12 = MakeEdge(Point112, \r
 619  Point122)</p>\r
 620 \r
 621 <p class="whs2">EdgeY22 = MakeEdge(Point212, \r
 622  Point222)</p>\r
 623 \r
 624 <p class="whs2">EdgeZ111 = MakeEdge(Point111, \r
 625  Point112)</p>\r
 626 \r
 627 <p class="whs2">EdgeZ211 = MakeEdge(Point211, \r
 628  Point212)</p>\r
 629 \r
 630 <p class="whs2">EdgeZ121 = MakeEdge(Point121, \r
 631  Point122)</p>\r
 632 \r
 633 <p class="whs2">EdgeZ221 = MakeEdge(Point221, \r
 634  Point222)</p>\r
 635 \r
 636 <p class="whs2">&nbsp;</p>\r
 637 \r
 638 <p class="whs3"># create faces</p>\r
 639 \r
 640 <p class="whs2">FaceX11 = MakeQuad(EdgeY11, \r
 641  EdgeZ111, EdgeY12, EdgeZ121)</p>\r
 642 \r
 643 <p class="whs2">FaceX21 = MakeQuad(EdgeY21, \r
 644  EdgeZ211, EdgeY22, EdgeZ221)</p>\r
 645 \r
 646 <p class="whs2">FaceY111 = MakeQuad(EdgeX111, \r
 647  EdgeZ111, EdgeX112, EdgeZ211)</p>\r
 648 \r
 649 <p class="whs2">FaceY121 = MakeQuad(EdgeX121, \r
 650  EdgeZ121, EdgeX122, EdgeZ221)</p>\r
 651 \r
 652 <p class="whs2">FaceZ11 = MakeQuad(EdgeX111, \r
 653  EdgeY11, EdgeX121, EdgeY21)</p>\r
 654 \r
 655 <p class="whs2">FaceZ12 = MakeQuad(EdgeX112, \r
 656  EdgeY12, EdgeX122, EdgeY22)</p>\r
 657 \r
 658 <p class="whs2">&nbsp;</p>\r
 659 \r
 660 <p class="whs3"># create a solid</p>\r
 661 \r
 662 <p class="whs2">Block = MakeHexa(FaceX11, \r
 663  FaceX21, FaceY111, FaceY121, FaceZ11, FaceZ12)</p>\r
 664 \r
 665 <p class="whs2">&nbsp;</p>\r
 666 \r
 667 <p class="whs3"># create a compound</p>\r
 668 \r
 669 <p class="whs2">box = MakeCompound([Block])</p>\r
 670 \r
 671 <p class="whs2">&nbsp;</p>\r
 672 \r
 673 <p class="whs3"># add in the study</p>\r
 674 \r
 675 <p class="whs2">box_id = addToStudy(box, \r
 676  &quot;Box compound&quot;)</p>\r
 677 \r
 678 <p class="whs2">&nbsp;</p>\r
 679 \r
 680 <p class="whs3"># create a hexahedral \r
 681  mesh on the box</p>\r
 682 \r
 683 <p class="whs2">hexa = smesh.Mesh(box, \r
 684  &quot;Box compound : hexahedrical mesh&quot;)</p>\r
 685 \r
 686 <p class="whs2">algo = hexa.Segment()</p>\r
 687 \r
 688 <p class="whs2">&nbsp;</p>\r
 689 \r
 690 <p class="whs3"># define &quot;NumberOfSegments&quot; \r
 691  hypothesis to cut an edge in a fixed number of segments</p>\r
 692 \r
 693 <p class="whs2">algo.NumberOfSegments(4)</p>\r
 694 \r
 695 <p class="whs2">&nbsp;</p>\r
 696 \r
 697 <p class="whs3"># create a quadrangle \r
 698  2D algorithm for faces</p>\r
 699 \r
 700 <p class="whs2">hexa.Quadrangle()</p>\r
 701 \r
 702 <p class="whs2">&nbsp;</p>\r
 703 \r
 704 <p class="whs3"># create a hexahedron \r
 705  3D algorithm for solids</p>\r
 706 \r
 707 <p class="whs2">hexa.Hexahedron()</p>\r
 708 \r
 709 <p class="whs2">&nbsp;</p>\r
 710 \r
 711 <p class="whs3"># create a local hypothesis</p>\r
 712 \r
 713 <p class="whs2">algo = hexa.Segment(EdgeX111)</p>\r
 714 \r
 715 <p class="whs2">&nbsp;</p>\r
 716 \r
 717 <p class="whs3"># define &quot;LocalLength&quot; \r
 718  hypothesis to cut an edge in several segments with the same length</p>\r
 719 \r
 720 <p class="whs2">algo.LocalLength(2)</p>\r
 721 \r
 722 <p class="whs2">&nbsp;</p>\r
 723 \r
 724 <p class="whs3"># define &quot;Propagation&quot; \r
 725  hypothesis that propagates all other hypothesis on all edges on<span style="font-family: 'Times New Roman', serif;"> \r
 726  the opposite side in case of quadrangular faces</span></p>\r
 727 \r
 728 <p class="whs2">algo.Propagation()</p>\r
 729 \r
 730 <p class="whs2">&nbsp;</p>\r
 731 \r
 732 <p class="whs3"># compute the mesh</p>\r
 733 \r
 734 <p class="whs2">hexa.Compute() </p>\r
 735 \r
 736 <p class="whs2">&nbsp;</p>\r
 737 \r
 738 <p class="whs2">&nbsp;</p>\r
 739 \r
 740 <h3>Defining 2D and 3D hypotheses</h3>\r
 741 \r
 742 <h4><a name=bookmark4>Maximum Element Area</a></h4>\r
 743 \r
 744 <p class="whs4">import smesh</p>\r
 745 \r
 746 <p class="whs4">import geompy</p>\r
 747 \r
 748 <p class="whs4">import salome</p>\r
 749 \r
 750 <p class="whs4">gg = salome.ImportComponentGUI(&quot;GEOM&quot;)</p>\r
 751 \r
 752 <p class="whs5">&nbsp;</p>\r
 753 \r
 754 <p class="whs5"># create vertices</p>\r
 755 \r
 756 <p class="whs4">px &nbsp;&nbsp;= \r
 757  geompy.MakeVertex(100., 0. &nbsp;, \r
 758  0. &nbsp;)</p>\r
 759 \r
 760 <p class="whs4">py &nbsp;&nbsp;= \r
 761  geompy.MakeVertex(0. &nbsp;, \r
 762  100., 0. &nbsp;)</p>\r
 763 \r
 764 <p class="whs4">pz &nbsp;&nbsp;= \r
 765  geompy.MakeVertex(0. &nbsp;, \r
 766  0. &nbsp;, 100.)</p>\r
 767 \r
 768 <p class="whs5">&nbsp;</p>\r
 769 \r
 770 <p class="whs5"># create a vector from \r
 771  two points</p>\r
 772 \r
 773 <p class="whs4">vxy = geompy.MakeVector(px, \r
 774  py)</p>\r
 775 \r
 776 <p class="whs5">&nbsp;</p>\r
 777 \r
 778 <p class="whs5"># create an arc from three \r
 779  points</p>\r
 780 \r
 781 <p class="whs4">arc = geompy.MakeArc(py, \r
 782  pz, px)</p>\r
 783 \r
 784 <p class="whs5">&nbsp;</p>\r
 785 \r
 786 <p class="whs5"># create a wire</p>\r
 787 \r
 788 <p class="whs4">wire = geompy.MakeWire([vxy, \r
 789  arc])</p>\r
 790 \r
 791 <p class="whs4">isPlanarFace = 1</p>\r
 792 \r
 793 <p class="whs5">&nbsp;</p>\r
 794 \r
 795 <p class="whs5"># create a face from the \r
 796  wire</p>\r
 797 \r
 798 <p class="whs4">face1 = geompy.MakeFace(wire, \r
 799  isPlanarFace)</p>\r
 800 \r
 801 <p class="whs5">&nbsp;</p>\r
 802 \r
 803 <p class="whs5"># add objects in the study</p>\r
 804 \r
 805 <p class="whs4">id_face1 = geompy.addToStudy(face1,&quot;Face1&quot;)</p>\r
 806 \r
 807 <p class="whs5">&nbsp;</p>\r
 808 \r
 809 <p class="whs5"># display faces</p>\r
 810 \r
 811 <p class="whs4">gg.createAndDisplayGO(id_face1)</p>\r
 812 \r
 813 <p class="whs4">gg.setDisplayMode(id_face1,1)</p>\r
 814 \r
 815 <p class="whs4">gg.setTransparency(id_face1,0.2)</p>\r
 816 \r
 817 <p class="whs5">&nbsp;</p>\r
 818 \r
 819 <p class="whs5"># create a hexahedral mesh</p>\r
 820 \r
 821 <p class="whs4">hexa = smesh.Mesh(face1, \r
 822  &quot;Face compound : hexahedrical mesh&quot;)</p>\r
 823 \r
 824 <p class="whs4">algo = hexa.Triangle()</p>\r
 825 \r
 826 <p class="whs5">&nbsp;</p>\r
 827 \r
 828 <p class="whs5"># define &quot;MaxElementArea&quot; \r
 829  hypothesis to be applied to each triangle</p>\r
 830 \r
 831 <p class="whs4">algo.MaxElementArea(7)</p>\r
 832 \r
 833 <p class="whs5">&nbsp;</p>\r
 834 \r
 835 <p class="whs5"># create a quadrangle 2D \r
 836  algorithm for faces</p>\r
 837 \r
 838 <p class="whs4">hexa.Quadrangle()</p>\r
 839 \r
 840 <p class="whs5">&nbsp;</p>\r
 841 \r
 842 <p class="whs5"># create a local hypothesis</p>\r
 843 \r
 844 <p class="whs6">algo = hexa.Segment(wire)</p>\r
 845 \r
 846 <p class="whs5">&nbsp;</p>\r
 847 \r
 848 <p class="whs5"># define &quot;NumberOfSegments&quot; \r
 849  hypothesis to cut an edge in a fixed number of segments</p>\r
 850 \r
 851 <p class="whs4">algo.NumberOfSegments(10)</p>\r
 852 \r
 853 <p class="whs5">&nbsp;</p>\r
 854 \r
 855 <p class="whs5"># compute the mesh</p>\r
 856 \r
 857 <p class="whs4">hexa.Compute() </p>\r
 858 \r
 859 <p class="whs4">&nbsp;</p>\r
 860 \r
 861 <h4><a name=bookmark5>Maximum Element Volume</a></h4>\r
 862 \r
 863 <p class="whs4"><span style="font-family: 'Lucida Console', monospace;">import \r
 864  salome</span></p>\r
 865 \r
 866 <p class="whs4">import geompy</p>\r
 867 \r
 868 <p class="whs4">import StdMeshers</p>\r
 869 \r
 870 <p class="whs4">smesh = salome.lcc.FindOrLoadComponent(&quot;FactoryServer&quot;, \r
 871  &quot;SMESH&quot;)</p>\r
 872 \r
 873 <p class="whs4">smeshgui = salome.ImportComponentGUI(&quot;SMESH&quot;)</p>\r
 874 \r
 875 <p class="whs4">smeshgui.Init(salome.myStudyId);</p>\r
 876 \r
 877 <p class="whs4">&nbsp;</p>\r
 878 \r
 879 <p class="whs7"># create a box</p>\r
 880 \r
 881 <p class="whs4">box = geompy.MakeCylinderRH(30, \r
 882  50) #MakeBox(0., 0., 0., 100., 200., 300.)</p>\r
 883 \r
 884 <p class="whs4">&nbsp;</p>\r
 885 \r
 886 <p class="whs7"># add the box to the \r
 887  study</p>\r
 888 \r
 889 <p class="whs4">idbox = geompy.addToStudy(box, \r
 890  &quot;box&quot;)</p>\r
 891 \r
 892 <p class="whs4">&nbsp;</p>\r
 893 \r
 894 <p class="whs7"># create vertices</p>\r
 895 \r
 896 <p class="whs4">px &nbsp;&nbsp;= \r
 897  geompy.MakeVertex(100., 0. &nbsp;, \r
 898  0. &nbsp;)</p>\r
 899 \r
 900 <p class="whs4">py &nbsp;&nbsp;= \r
 901  geompy.MakeVertex(0. &nbsp;, \r
 902  100., 0. &nbsp;)</p>\r
 903 \r
 904 <p class="whs4">pz &nbsp;&nbsp;= \r
 905  geompy.MakeVertex(0. &nbsp;, \r
 906  0. &nbsp;, 100.)</p>\r
 907 \r
 908 <p class="whs4">&nbsp;</p>\r
 909 \r
 910 <p class="whs7"># create a vector from \r
 911  two points</p>\r
 912 \r
 913 <p class="whs4">vxy = geompy.MakeVector(px, \r
 914  py)</p>\r
 915 \r
 916 <p class="whs4">&nbsp;</p>\r
 917 \r
 918 <p class="whs7"># create an arc from \r
 919  three points</p>\r
 920 \r
 921 <p class="whs4">arc = geompy.MakeArc(py, \r
 922  pz, px)</p>\r
 923 \r
 924 <p class="whs4">&nbsp;</p>\r
 925 \r
 926 <p class="whs7"># create a wire</p>\r
 927 \r
 928 <p class="whs4">wire = geompy.MakeWire([vxy, \r
 929  arc])</p>\r
 930 \r
 931 <p class="whs4">isPlanarFace = 1</p>\r
 932 \r
 933 <p class="whs4">&nbsp;</p>\r
 934 \r
 935 <p class="whs7"># create a face from \r
 936  the wire</p>\r
 937 \r
 938 <p class="whs4">#face1</p>\r
 939 \r
 940 <p class="whs4">box = geompy.MakeFace(wire, \r
 941  isPlanarFace)</p>\r
 942 \r
 943 <p class="whs4">&nbsp;</p>\r
 944 \r
 945 <p class="whs7"># add objects in the \r
 946  study</p>\r
 947 \r
 948 <p class="whs4">id_face1 = geompy.addToStudy(box,&quot;Face1&quot;)</p>\r
 949 \r
 950 <p class="whs4">#geompy.addToStudy(face1,&quot;Face1&quot;)</p>\r
 951 \r
 952 <p class="whs4">&nbsp;</p>\r
 953 \r
 954 <p class="whs7"># display faces</p>\r
 955 \r
 956 <p class="whs4">gg.createAndDisplayGO(id_face1)</p>\r
 957 \r
 958 <p class="whs4">gg.setDisplayMode(id_face1,1)</p>\r
 959 \r
 960 <p class="whs4">gg.setTransparency(id_face1,0.2)</p>\r
 961 \r
 962 <p class="whs4">&nbsp;</p>\r
 963 \r
 964 <p class="whs7"># create a hypothesis</p>\r
 965 \r
 966 <p class="whs4">print &quot;-------------------------- \r
 967  create Hypothesis&quot;</p>\r
 968 \r
 969 <p class="whs4">print &quot;-------------------------- \r
 970  NumberOfSegments&quot;</p>\r
 971 \r
 972 <p class="whs4">numberOfSegments \r
 973  = 7</p>\r
 974 \r
 975 <p class="whs4">hypNbSeg = smesh.CreateHypothesis(&quot;NumberOfSegments&quot;, \r
 976  &quot;libStdMeshersEngine.so&quot;)</p>\r
 977 \r
 978 <p class="whs4">hypNbSeg.SetNumberOfSegments(numberOfSegments)</p>\r
 979 \r
 980 <p class="whs4">print hypNbSeg.GetName()</p>\r
 981 \r
 982 <p class="whs4">print hypNbSeg.GetId()</p>\r
 983 \r
 984 <p class="whs4">print hypNbSeg.GetNumberOfSegments()</p>\r
 985 \r
 986 <p class="whs4">smeshgui.SetName(salome.ObjectToID(hypNbSeg), \r
 987  &quot;NumberOfSegments_10&quot;)</p>\r
 988 \r
 989 <p class="whs4">print &quot;-------------------------- \r
 990  MaxElementArea&quot;</p>\r
 991 \r
 992 <p class="whs4">maxElementArea = \r
 993  800</p>\r
 994 \r
 995 <p class="whs4">hypArea = smesh.CreateHypothesis(&quot;MaxElementArea&quot;, \r
 996  &quot;libStdMeshersEngine.so&quot;)</p>\r
 997 \r
 998 <p class="whs4">hypArea.SetMaxElementArea(maxElementArea)</p>\r
 999 \r
1000 <p class="whs4">print hypArea.GetName()</p>\r
1001 \r
1002 <p class="whs4">print hypArea.GetId()</p>\r
1003 \r
1004 <p class="whs4">print hypArea.GetMaxElementArea()</p>\r
1005 \r
1006 <p class="whs4">smeshgui.SetName(salome.ObjectToID(hypArea), \r
1007  &quot;MaxElementArea_800&quot;)</p>\r
1008 \r
1009 <p class="whs4">print &quot;-------------------------- \r
1010  MaxElementVolume&quot;</p>\r
1011 \r
1012 <p class="whs4">maxElementVolume \r
1013  = 900</p>\r
1014 \r
1015 <p class="whs4">hypVolume = smesh.CreateHypothesis(&quot;MaxElementVolume&quot;, \r
1016  &quot;libStdMeshersEngine.so&quot;)</p>\r
1017 \r
1018 <p class="whs4">hypVolume.SetMaxElementVolume(maxElementVolume)</p>\r
1019 \r
1020 <p class="whs4">print hypVolume.GetName()</p>\r
1021 \r
1022 <p class="whs4">print hypVolume.GetId()</p>\r
1023 \r
1024 <p class="whs4">print hypVolume.GetMaxElementVolume()</p>\r
1025 \r
1026 <p class="whs4">smeshgui.SetName(salome.ObjectToID(hypVolume), \r
1027  &quot;MaxElementVolume_900&quot;)</p>\r
1028 \r
1029 <p class="whs4">&nbsp;</p>\r
1030 \r
1031 <p class="whs7"># create algorithms</p>\r
1032 \r
1033 <p class="whs4">print &quot;-------------------------- \r
1034  create Algorithms&quot;</p>\r
1035 \r
1036 <p class="whs4">print &quot;-------------------------- \r
1037  Regular_1D&quot;</p>\r
1038 \r
1039 <p class="whs4">regular1D = smesh.CreateHypothesis(&quot;Regular_1D&quot;, \r
1040  &quot;libStdMeshersEngine.so&quot;)</p>\r
1041 \r
1042 <p class="whs4">smeshgui.SetName(salome.ObjectToID(regular1D), \r
1043  &quot;Wire Discretisation&quot;)</p>\r
1044 \r
1045 <p class="whs4">print &quot;-------------------------- \r
1046  MEFISTO_2D&quot;</p>\r
1047 \r
1048 <p class="whs4">mefisto2D = smesh.CreateHypothesis(&quot;MEFISTO_2D&quot;, \r
1049  &quot;libStdMeshersEngine.so&quot;)</p>\r
1050 \r
1051 <p class="whs4">smeshgui.SetName(salome.ObjectToID(mefisto2D), \r
1052  &quot;MEFISTO_2D&quot;)</p>\r
1053 \r
1054 <p class="whs4">#print &quot;-------------------------- \r
1055  Hexa_3D (Hexahedron meshing algorithm)&quot;</p>\r
1056 \r
1057 <p class="whs4">hexa3D = smesh.CreateHypothesis(&quot;Hexa_3D&quot;, \r
1058  &quot;libStdMeshersEngine.so&quot;)</p>\r
1059 \r
1060 <p class="whs4">smeshgui.SetName(salome.ObjectToID(hexa3D), \r
1061  &quot;HEXA_3D&quot;)</p>\r
1062 \r
1063 <p class="whs4">&nbsp;</p>\r
1064 \r
1065 <p class="whs7"># initialize a mesh \r
1066  with the box</p>\r
1067 \r
1068 <p class="whs4">mesh = smesh.CreateMesh(box)</p>\r
1069 \r
1070 <p class="whs4">smeshgui.SetName(salome.ObjectToID(mesh), \r
1071  &quot;MeshBox&quot;)</p>\r
1072 \r
1073 <p class="whs4">&nbsp;</p>\r
1074 \r
1075 <p class="whs7"># add a hypothesis \r
1076  to the box</p>\r
1077 \r
1078 <p class="whs4">print &quot;-------------------------- \r
1079  add hypothesis to the box&quot;</p>\r
1080 \r
1081 <p class="whs4">mesh.AddHypothesis(box,hypNbSeg)</p>\r
1082 \r
1083 <p class="whs4">mesh.AddHypothesis(box,hypArea)</p>\r
1084 \r
1085 <p class="whs4">mesh.AddHypothesis(box,hypVolume)</p>\r
1086 \r
1087 <p class="whs4">mesh.AddHypothesis(box,regular1D)</p>\r
1088 \r
1089 <p class="whs4">mesh.AddHypothesis(box,mefisto2D)</p>\r
1090 \r
1091 <p class="whs4">mesh.AddHypothesis(box,hexa3D)</p>\r
1092 \r
1093 <p class="whs4">&nbsp;</p>\r
1094 \r
1095 <p class="whs7"># compute the mesh</p>\r
1096 \r
1097 <p class="whs4">print &quot;-------------------------- \r
1098  compute the mesh of the box&quot;</p>\r
1099 \r
1100 <p class="whs4">ret = smesh.Compute(mesh,box)</p>\r
1101 \r
1102 <p class="whs4">print ret</p>\r
1103 \r
1104 <p class="whs4">if ret == 0:</p>\r
1105 \r
1106 <p class="whs4">&nbsp;&nbsp;&nbsp;&nbsp;print \r
1107  &quot;probleme when computing the mesh&quot;</p>\r
1108 \r
1109 <p class="whs4">salome.sg.updateObjBrowser(1)</p>\r
1110 \r
1111 <p class="whs4">&nbsp;</p>\r
1112 \r
1113 <h3>Defining Additional Hypotheses</h3>\r
1114 \r
1115 <h4><a name=bookmark6>Length from Edges</a></h4>\r
1116 \r
1117 <p class="whs2">import smesh</p>\r
1118 \r
1119 <p class="whs2">import geompy</p>\r
1120 \r
1121 <p class="whs2">import salome</p>\r
1122 \r
1123 <p class="whs2">gg = salome.ImportComponentGUI(&quot;GEOM&quot;)</p>\r
1124 \r
1125 <p>&nbsp;</p>\r
1126 \r
1127 <p># create sketchers</p>\r
1128 \r
1129 <p class="whs2">sketcher1 = geompy.MakeSketcher(&quot;Sketcher:F \r
1130  0 0:TT 70 0:TT 70 70:TT 0 70:WW&quot;)</p>\r
1131 \r
1132 <p class="whs2">sketcher2 = geompy.MakeSketcher(&quot;Sketcher:F \r
1133  20 20:TT 50 20:TT 50 50:TT 20 50:WW&quot;)</p>\r
1134 \r
1135 <p class="whs2">isPlanarFace = 1</p>\r
1136 \r
1137 <p>&nbsp;</p>\r
1138 \r
1139 <p># create faces from two wires</p>\r
1140 \r
1141 <p class="whs2">face1 = geompy.MakeFaces([sketcher1, \r
1142  sketcher2],isPlanarFace)</p>\r
1143 \r
1144 <p>&nbsp;</p>\r
1145 \r
1146 <p># add objects in the study</p>\r
1147 \r
1148 <p class="whs2">id_face1 = geompy.addToStudy(face1,&quot;Face1&quot;)</p>\r
1149 \r
1150 <p>&nbsp;</p>\r
1151 \r
1152 <p># display faces</p>\r
1153 \r
1154 <p class="whs2">gg.createAndDisplayGO(id_face1)</p>\r
1155 \r
1156 <p class="whs2">gg.setDisplayMode(id_face1,1)</p>\r
1157 \r
1158 <p class="whs2">gg.setTransparency(id_face1,0.2)</p>\r
1159 \r
1160 <p>&nbsp;</p>\r
1161 \r
1162 <p># create a mesh</p>\r
1163 \r
1164 <p class="whs2">hexa = smesh.Mesh(face1, \r
1165  &quot;Face : triangle 2D mesh&quot;)</p>\r
1166 \r
1167 <p class="whs2">algo = hexa.Triangle()</p>\r
1168 \r
1169 <p>&nbsp;</p>\r
1170 \r
1171 <p># define &quot;MaxElementArea&quot; hypothesis to be applied to each \r
1172  triangle</p>\r
1173 \r
1174 <p class="whs2">algo.MaxElementArea(30)</p>\r
1175 \r
1176 <p>&nbsp;</p>\r
1177 \r
1178 <p># define &quot;LengthFromEdges&quot; hypothesis to build triangles based \r
1179  on the length of the edges taken from the wire</p>\r
1180 \r
1181 <p class="whs2">algo.LengthFromEdges()</p>\r
1182 \r
1183 <p>&nbsp;</p>\r
1184 \r
1185 <p># create local hypothesis</p>\r
1186 \r
1187 <p class="whs2">algo = hexa.Segment()</p>\r
1188 \r
1189 <p>&nbsp;</p>\r
1190 \r
1191 <p># define &quot;NumberOfSegments&quot; hypothesis to cut an edge in a \r
1192  fixed number of segments</p>\r
1193 \r
1194 <p class="whs2">algo.NumberOfSegments(2)</p>\r
1195 \r
1196 <p>&nbsp;</p>\r
1197 \r
1198 <p># compute the mesh</p>\r
1199 \r
1200 <p class="whs2">hexa.Compute() </p>\r
1201 \r
1202 <p class="whs2">&nbsp;</p>\r
1203 \r
1204 <h4><a name=bookmark7>Propagation</a></h4>\r
1205 \r
1206 <p class="whs2">from geompy import \r
1207  *</p>\r
1208 \r
1209 <p class="whs2">import smesh</p>\r
1210 \r
1211 <p class="whs2">&nbsp;</p>\r
1212 \r
1213 <p class="whs3"># create vertices</p>\r
1214 \r
1215 <p class="whs2">Point111 = MakeVertex( \r
1216  0, &nbsp;0, &nbsp;0)</p>\r
1217 \r
1218 <p class="whs2">Point211 = MakeVertex(10, \r
1219  &nbsp;0, &nbsp;0)</p>\r
1220 \r
1221 <p class="whs2">Point121 = MakeVertex( \r
1222  0, 10, &nbsp;0)</p>\r
1223 \r
1224 <p class="whs2">Point221 = MakeVertex(10, \r
1225  10, &nbsp;0)</p>\r
1226 \r
1227 <p class="whs2">Point112 = MakeVertex( \r
1228  0, &nbsp;0, 10)</p>\r
1229 \r
1230 <p class="whs2">Point212 = MakeVertex(10, \r
1231  &nbsp;0, 10)</p>\r
1232 \r
1233 <p class="whs2">Point122 = MakeVertex( \r
1234  0, 10, 10)</p>\r
1235 \r
1236 <p class="whs2">Point222 = MakeVertex(10, \r
1237  10, 10)</p>\r
1238 \r
1239 <p class="whs2">&nbsp;</p>\r
1240 \r
1241 <p class="whs3"># create edges</p>\r
1242 \r
1243 <p class="whs2">EdgeX111 = MakeEdge(Point111, \r
1244  Point211)</p>\r
1245 \r
1246 <p class="whs2">EdgeX121 = MakeEdge(Point121, \r
1247  Point221)</p>\r
1248 \r
1249 <p class="whs2">EdgeX112 = MakeEdge(Point112, \r
1250  Point212)</p>\r
1251 \r
1252 <p class="whs2">EdgeX122 = MakeEdge(Point122, \r
1253  Point222)</p>\r
1254 \r
1255 <p class="whs2">EdgeY11 = MakeEdge(Point111, \r
1256  Point121)</p>\r
1257 \r
1258 <p class="whs2">EdgeY21 = MakeEdge(Point211, \r
1259  Point221)</p>\r
1260 \r
1261 <p class="whs2">EdgeY12 = MakeEdge(Point112, \r
1262  Point122)</p>\r
1263 \r
1264 <p class="whs2">EdgeY22 = MakeEdge(Point212, \r
1265  Point222)</p>\r
1266 \r
1267 <p class="whs2">EdgeZ111 = MakeEdge(Point111, \r
1268  Point112)</p>\r
1269 \r
1270 <p class="whs2">EdgeZ211 = MakeEdge(Point211, \r
1271  Point212)</p>\r
1272 \r
1273 <p class="whs2">EdgeZ121 = MakeEdge(Point121, \r
1274  Point122)</p>\r
1275 \r
1276 <p class="whs2">EdgeZ221 = MakeEdge(Point221, \r
1277  Point222)</p>\r
1278 \r
1279 <p class="whs2">&nbsp;</p>\r
1280 \r
1281 <p class="whs3"># create faces</p>\r
1282 \r
1283 <p class="whs2">FaceX11 = MakeQuad(EdgeY11, \r
1284  EdgeZ111, EdgeY12, EdgeZ121)</p>\r
1285 \r
1286 <p class="whs2">FaceX21 = MakeQuad(EdgeY21, \r
1287  EdgeZ211, EdgeY22, EdgeZ221)</p>\r
1288 \r
1289 <p class="whs2">FaceY111 = MakeQuad(EdgeX111, \r
1290  EdgeZ111, EdgeX112, EdgeZ211)</p>\r
1291 \r
1292 <p class="whs2">FaceY121 = MakeQuad(EdgeX121, \r
1293  EdgeZ121, EdgeX122, EdgeZ221)</p>\r
1294 \r
1295 <p class="whs2">FaceZ11 = MakeQuad(EdgeX111, \r
1296  EdgeY11, EdgeX121, EdgeY21)</p>\r
1297 \r
1298 <p class="whs2">FaceZ12 = MakeQuad(EdgeX112, \r
1299  EdgeY12, EdgeX122, EdgeY22)</p>\r
1300 \r
1301 <p class="whs2">&nbsp;</p>\r
1302 \r
1303 <p class="whs3"># create a solid</p>\r
1304 \r
1305 <p class="whs2">Block = MakeHexa(FaceX11, \r
1306  FaceX21, FaceY111, FaceY121, FaceZ11, FaceZ12)</p>\r
1307 \r
1308 <p class="whs2">&nbsp;</p>\r
1309 \r
1310 <p class="whs3"># create a compound</p>\r
1311 \r
1312 <p class="whs2">box = MakeCompound([Block])</p>\r
1313 \r
1314 <p class="whs2">&nbsp;</p>\r
1315 \r
1316 <p class="whs3"># add in the study</p>\r
1317 \r
1318 <p class="whs2">box_id = addToStudy(box, \r
1319  &quot;Box compound&quot;)</p>\r
1320 \r
1321 <p class="whs2">&nbsp;</p>\r
1322 \r
1323 <p class="whs3"># create a hexahedral \r
1324  mesh on the box</p>\r
1325 \r
1326 <p class="whs2">hexa = smesh.Mesh(box, \r
1327  &quot;Box compound : hexahedrical mesh&quot;)</p>\r
1328 \r
1329 <p class="whs2">algo = hexa.Segment()</p>\r
1330 \r
1331 <p class="whs2">&nbsp;</p>\r
1332 \r
1333 <p class="whs3"># define &quot;NumberOfSegments&quot; \r
1334  hypothesis to cut an edge in a fixed number of segments</p>\r
1335 \r
1336 <p class="whs2">algo.NumberOfSegments(4)</p>\r
1337 \r
1338 <p class="whs2">&nbsp;</p>\r
1339 \r
1340 <p class="whs3"># create a quadrangle \r
1341  2D algorithm for faces</p>\r
1342 \r
1343 <p class="whs2">hexa.Quadrangle()</p>\r
1344 \r
1345 <p class="whs2">&nbsp;</p>\r
1346 \r
1347 <p class="whs3"># create a hexahedron \r
1348  3D algorithm for solids</p>\r
1349 \r
1350 <p class="whs2">hexa.Hexahedron()</p>\r
1351 \r
1352 <p class="whs2">&nbsp;</p>\r
1353 \r
1354 <p class="whs3"># create a local hypothesis</p>\r
1355 \r
1356 <p class="whs2">algo = hexa.Segment(EdgeX111)</p>\r
1357 \r
1358 <p class="whs2">&nbsp;</p>\r
1359 \r
1360 <p class="whs2"><span style="font-family: 'Times New Roman', serif;"># \r
1361  define &quot;Arithmetic1D&quot; hypothesis to cut an edge in several segments \r
1362  with arithmetic length</span> </p>\r
1363 \r
1364 <p class="whs2">increasing</p>\r
1365 \r
1366 <p class="whs2">algo.Arithmetic1D(1, \r
1367  4)</p>\r
1368 \r
1369 <p class="whs2">&nbsp;</p>\r
1370 \r
1371 <p class="whs3"># define &quot;Propagation&quot; \r
1372  hypothesis that propagatea all other hypothesis on all edges on the opposite \r
1373  side in case of quadrangular faces</p>\r
1374 \r
1375 <p class="whs2">algo.Propagation()</p>\r
1376 \r
1377 <p class="whs2">&nbsp;</p>\r
1378 \r
1379 <p class="whs3"># compute the mesh</p>\r
1380 \r
1381 <p class="whs2">hexa.Compute() </p>\r
1382 \r
1383 <p class="whs2">&nbsp;</p>\r
1384 \r
1385 <h3><a name=bookmark8>Defining Meshing Algorithms</a></h3>\r
1386 \r
1387 <p class="whs4"><span style="font-family: 'Lucida Console', monospace;">import \r
1388  salome</span></p>\r
1389 \r
1390 <p class="whs4">import StdMeshers</p>\r
1391 \r
1392 <p class="whs4">import NETGENPlugin</p>\r
1393 \r
1394 <p class="whs4">&nbsp;</p>\r
1395 \r
1396 <p class="whs4">smesh = salome.lcc.FindOrLoadComponent(&quot;FactoryServer&quot;, \r
1397  &quot;SMESH&quot;)</p>\r
1398 \r
1399 <p class="whs4">smeshgui = salome.ImportComponentGUI(&quot;SMESH&quot;)</p>\r
1400 \r
1401 <p class="whs4">smeshgui.Init(salome.myStudyId);</p>\r
1402 \r
1403 <p class="whs5">&nbsp;</p>\r
1404 \r
1405 <p class="whs5"># create algorithms</p>\r
1406 \r
1407 <p class="whs4">print &quot;-------------------------- \r
1408  create Algorithms&quot;</p>\r
1409 \r
1410 <p class="whs4">print &quot;-------------------------- \r
1411  Regular_1D (Wire discretisation)&quot;</p>\r
1412 \r
1413 <p class="whs4">regular1D = smesh.CreateHypothesis(&quot;Regular_1D&quot;, \r
1414  &quot;libStdMeshersEngine.so&quot;)</p>\r
1415 \r
1416 <p class="whs4">smeshgui.SetName(salome.ObjectToID(regular1D), \r
1417  &quot;Wire Discretisation&quot;)</p>\r
1418 \r
1419 <p class="whs4">&nbsp;</p>\r
1420 \r
1421 <p class="whs4">print &quot;-------------------------- \r
1422  MEFISTO_2D (Triangle meshing algorithm)&quot;</p>\r
1423 \r
1424 <p class="whs4">mefisto2D = smesh.CreateHypothesis(&quot;MEFISTO_2D&quot;, \r
1425  &quot;libStdMeshersEngine.so&quot;)</p>\r
1426 \r
1427 <p class="whs4">smeshgui.SetName(salome.ObjectToID(mefisto2D), \r
1428  &quot;MEFISTO_2D&quot;)</p>\r
1429 \r
1430 <p class="whs4">&nbsp;</p>\r
1431 \r
1432 <p class="whs4">print &quot;-------------------------- \r
1433  Quadrangle_2D (Quadrangle meshing algorithm)&quot;</p>\r
1434 \r
1435 <p class="whs4">quad2D = smesh.CreateHypothesis( \r
1436  &quot;Quadrangle_2D&quot;, &quot;libStdMeshersEngine.so&quot; )</p>\r
1437 \r
1438 <p class="whs4">smeshgui.SetName(salome.ObjectToID(quad2D), \r
1439  &quot;Quadrangle_2D&quot;)</p>\r
1440 \r
1441 <p class="whs4">&nbsp;</p>\r
1442 \r
1443 <p class="whs4">print &quot;-------------------------- \r
1444  Hexa_3D (Hexahedron meshing algorithm)&quot;</p>\r
1445 \r
1446 <p class="whs4">hexa3D = smesh.CreateHypothesis(&quot;Hexa_3D&quot;, \r
1447  &quot;libStdMeshersEngine.so&quot;)</p>\r
1448 \r
1449 <p class="whs4">smeshgui.SetName(salome.ObjectToID(hexa3D), \r
1450  &quot;HEXA_3D&quot;)</p>\r
1451 \r
1452 <p class="whs4">&nbsp;</p>\r
1453 \r
1454 <p class="whs4">print &quot;-------------------------- \r
1455  NETGEN_3D (Tetrahedron meshing algorithm)&quot;</p>\r
1456 \r
1457 <p class="whs4">netgen3D = smesh.CreateHypothesis(&quot;NETGEN_3D&quot;, \r
1458  &quot;libNETGENEngine.so&quot;)</p>\r
1459 \r
1460 <p class="whs4">smeshgui.SetName(salome.ObjectToID(netgen3D), \r
1461  &quot;NETGEN_3D&quot;)</p>\r
1462 \r
1463 <p class="whs4">salome.sg.updateObjBrowser(1)</p>\r
1464 \r
1465 <p class="whs5">&nbsp;</p>\r
1466 \r
1467 <script type="text/javascript" language="javascript1.2">\r
1468 <!--\r
1469 if (window.writeIntopicBar)\r
1470         writeIntopicBar(0);\r
1471 //-->\r
1472 </script>\r
1473 </body>\r
1474 </html>\r