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103 <body><script type="text/javascript" language="javascript1.2">
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109 <h1>Modifying Meshes</h1>
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111 <h3><a name=bookmark>Adding Nodes and Elements</a></h3>
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115 <p class="whs1">import SMESH_mechanic</p>
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117 <p class="whs1"> </p>
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119 <p class="whs1">mesh = SMESH_mechanic.mesh</p>
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121 <p class="whs1"> </p>
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123 <p class="whs2"># add node</p>
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125 <p class="whs1"><span style="font-family: 'Lucida Console', monospace;">new_id
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126 = mesh.AddNode(50, 10, 0)</span></p>
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128 <p class="whs1">print ""</p>
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130 <p class="whs1">if new_id == 0:
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131 print "KO node addition."</p>
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133 <p class="whs1">else: print
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134 "New Node has been added with ID ", new_id </p>
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136 <p class="whs1"> </p>
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140 <p class="whs1">import SMESH_mechanic</p>
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142 <p class="whs1"> </p>
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144 <p class="whs1">mesh = SMESH_mechanic.mesh</p>
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146 <p class="whs1">print ""</p>
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148 <p class="whs1"> </p>
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150 <p class="whs2"># add node</p>
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152 <p class="whs1"><span style="font-family: 'Lucida Console', monospace;">n1
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153 = mesh.AddNode(50, 10, 0)</span></p>
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155 <p class="whs1">if n1 == 0: print
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156 "KO node addition." </p>
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158 <p class="whs1"> </p>
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160 <p class="whs2"># add edge</p>
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162 <p class="whs1"><span style="font-family: 'Lucida Console', monospace;">e1
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163 = mesh.AddEdge([n1, 38])</span></p>
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165 <p class="whs1">if e1 == 0: print
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166 "KO edge addition."</p>
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168 <p class="whs1">else: print
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169 "New Edge has been added with ID ", e1 </p>
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171 <h4>Add Triangle</h4>
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173 <p class="whs1">import SMESH_mechanic</p>
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175 <p class="whs1"> </p>
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177 <p class="whs1">mesh = SMESH_mechanic.mesh</p>
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179 <p class="whs1">print ""</p>
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181 <p class="whs1"> </p>
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183 <p class="whs2"># add node</p>
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185 <p class="whs1">n1 = mesh.AddNode(50,
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188 <p class="whs1">if n1 == 0: print
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189 "KO node addition."</p>
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191 <p class="whs1"> </p>
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193 <p class="whs2"># add triangle</p>
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195 <p class="whs1">t1 = mesh.AddFace([n1,
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198 <p class="whs1">if t1 == 0: print
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199 "KO triangle addition."</p>
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201 <p class="whs1">else: print
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202 "New Triangle has been added with ID ", t1 </p>
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204 <h4>Add Quadrangle</h4>
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206 <p class="whs1">import SMESH_mechanic</p>
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208 <p class="whs1"> </p>
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210 <p class="whs1">mesh = SMESH_mechanic.mesh</p>
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212 <p class="whs1">print ""</p>
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214 <p class="whs3"> </p>
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216 <p class="whs3"># add node</p>
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218 <p class="whs1">n1 = mesh.AddNode(50,
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221 <p class="whs1">if n1 == 0: print
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222 "KO node addition."</p>
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224 <p class="whs1"> </p>
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226 <p class="whs1">n2 = mesh.AddNode(40,
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229 <p class="whs1">if n2 == 0: print
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230 "KO node addition."</p>
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232 <p class="whs1"> </p>
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234 <p class="whs3"># add quadrangle</p>
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236 <p class="whs1">q1 = mesh.AddFace([n2,
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239 <p class="whs1">if q1 == 0: print
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240 "KO quadrangle addition."</p>
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242 <p class="whs3"><span style="font-family: 'Lucida Console', monospace;">else:
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243 print
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244 "New Quadrangle has been added with ID ", q1</span> </p>
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246 <h4>Add Tetrahedron</h4>
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248 <p class="whs1">import SMESH_mechanic</p>
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250 <p class="whs1"> </p>
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252 <p class="whs1">mesh = SMESH_mechanic.mesh</p>
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254 <p class="whs1">print ""</p>
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256 <p class="whs1"> </p>
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258 <p class="whs2"># add node</p>
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260 <p class="whs1">n1 = mesh.AddNode(50,
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263 <p class="whs1">if n1 == 0: print
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264 "KO node addition."</p>
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266 <p class="whs1"> </p>
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268 <p class="whs2"># add tetrahedron</p>
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270 <p class="whs1">t1 = mesh.AddVolume([n1,
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273 <p class="whs1">if t1 == 0: print
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274 "KO tetrahedron addition."</p>
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276 <p class="whs3"><span style="font-family: 'Lucida Console', monospace;">else:
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277 print
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278 "New Tetrahedron has been added with ID ", t1</span> </p>
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280 <h4>Add Hexahedron</h4>
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282 <p class="whs1">import SMESH_mechanic</p>
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284 <p class="whs1"> </p>
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286 <p class="whs1">mesh = SMESH_mechanic.mesh</p>
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288 <p class="whs1">print ""</p>
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290 <p class="whs1"> </p>
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292 <p class="whs2"># add nodes</p>
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294 <p class="whs1">nId1 = mesh.AddNode(50,
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297 <p class="whs1">nId2 = mesh.AddNode(47,
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300 <p class="whs1">nId3 = mesh.AddNode(50,
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303 <p class="whs1">nId4 = mesh.AddNode(47,
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306 <p class="whs1"> </p>
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308 <p class="whs1">if nId1 == 0 or
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309 nId2 == 0 or nId3 == 0 or nId4 == 0: print "KO node addition."</p>
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311 <p class="whs1"> </p>
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313 <p class="whs2"># add hexahedron</p>
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315 <p class="whs1">vId = mesh.AddVolume([nId2,
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316 nId1, 38, 39, nId4, nId3, 245, 246])</p>
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318 <p class="whs1">if vId == 0: print
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319 "KO Hexahedron addition."</p>
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321 <p class="whs1">else: print
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322 "New Hexahedron has been added with ID ", vId </p>
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324 <p class="whs1"> </p>
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326 <h4>Add Polygon</h4>
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328 <p class="whs1"><span style="font-family: 'Lucida Console', monospace;">import
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331 <p class="whs1">import salome</p>
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333 <p class="whs1"> </p>
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335 <p class="whs1">import smesh</p>
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337 <p class="whs1"> </p>
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339 <p class="whs2"># create an empty mesh
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342 <p class="whs1">mesh = smesh.Mesh()
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345 <p class="whs1"> </p>
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347 <p class="whs2"># a method to build
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348 a polygonal mesh element with <nb_vert> angles:</p>
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350 <p class="whs1">def MakePolygon
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351 (a_mesh, x0, y0, z0, radius, nb_vert):</p>
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353 <p class="whs1"> al
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354 = 2.0 * math.pi / nb_vert</p>
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356 <p class="whs1"> node_ids
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359 <p class="whs1"> </p>
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361 <p class="whs2"> #
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362 Create nodes for a polygon</p>
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364 <p class="whs1"> for
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365 ii in range(nb_vert):</p>
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367 <p class="whs1"> nid
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368 = mesh.AddNode(x0 + radius * math.cos(ii*al),</p>
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370 <p class="whs1"> y0
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371 + radius * math.sin(ii*al),</p>
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373 <p class="whs1"> z0)</p>
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375 <p class="whs1"> node_ids.append(nid)</p>
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377 <p class="whs1"> pass</p>
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379 <p class="whs1"> </p>
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381 <p class="whs2"> #
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382 Create a polygon</p>
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384 <p class="whs1"> return
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385 mesh.AddPolygonalFace(node_ids)</p>
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387 <p class="whs1"> </p>
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389 <p class="whs2"># Create three polygons</p>
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391 <p class="whs1">f1 = MakePolygon(mesh,
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395 <p class="whs1">f2 = MakePolygon(mesh,
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396 0, 0, 10, 21, 9)</p>
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398 <p class="whs1">f3 = MakePolygon(mesh,
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399 0, 0, 20, 13, 6)</p>
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401 <p class="whs1"> </p>
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403 <p class="whs1">salome.sg.updateObjBrowser(1)
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406 <h4>Add Polyhedron</h4>
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408 <p class="whs1"><span style="font-family: 'Lucida Console', monospace;">import
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411 <p class="whs1">import math</p>
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413 <p class="whs1"> </p>
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415 <p class="whs2"># create an empty mesh
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418 <p class="whs1">mesh = smesh.Mesh()
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421 <p class="whs1"> </p>
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423 <p class="whs2"># Create nodes for
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424 12-hedron with pentagonal faces</p>
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426 <p class="whs1">al = 2 * math.pi
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429 <p class="whs1">cosal = math.cos(al)</p>
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431 <p class="whs1">aa = 13</p>
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433 <p class="whs1">rr = aa / (2.0 *
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434 math.sin(al/2.0))</p>
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436 <p class="whs1">dr = 2.0 * rr *
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439 <p class="whs1">r1 = rr + dr</p>
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441 <p class="whs1">dh = rr * math.sqrt(2.0
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442 * (1.0 - cosal * (1.0 + 2.0 * cosal)))</p>
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444 <p class="whs1">hh = 2.0 * dh -
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445 dr * (rr*(cosal - 1) + (rr + dr)*(math.cos(al/2) - 1)) / dh</p>
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447 <p class="whs1"> </p>
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449 <p class="whs1">dd = [] <span style="font-family: 'Times New Roman', serif;">#
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452 <p class="whs1">cc = [] <span style="font-family: 'Times New Roman', serif;">#
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453 below top</span></p>
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455 <p class="whs1">bb = [] <span style="font-family: 'Times New Roman', serif;">#
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456 above bottom</span></p>
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458 <p class="whs1">aa = [] <span style="font-family: 'Times New Roman', serif;">#
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461 <p class="whs1"> </p>
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463 <p class="whs1">for i in range(5):</p>
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465 <p class="whs1"> cos_bot
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466 = math.cos(i*al)</p>
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468 <p class="whs1"> sin_bot
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469 = math.sin(i*al)</p>
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471 <p class="whs1"> </p>
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473 <p class="whs1"> <span
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474 style="margin-top: 0pt;
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475 margin-bottom: 0pt;
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476 font-family: 'Lucida Console', monospace;">cos_top
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477 = math.cos(i*al + al/2.0)</span></p>
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479 <p class="whs1"> sin_top
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480 = math.sin(i*al + al/2.0)</p>
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482 <p class="whs1"> </p>
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484 <p class="whs1"> nd
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485 = mesh.AddNode(rr * cos_top, rr * sin_top, hh )
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486 <span style="font-family: 'Times New Roman', serif;"># top</span></p>
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488 <p class="whs1"> nc
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489 = mesh.AddNode(r1 * cos_top, r1 * sin_top, hh - dh) <span style="font-family: 'Times New Roman', serif;">#
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490 below top</span></p>
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492 <p class="whs1"> nb
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493 = mesh.AddNode(r1 * cos_bot, r1 * sin_bot, dh)
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494 <span style="font-family: 'Times New Roman', serif;"># above bottom</span></p>
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496 <p class="whs1"> na
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497 = mesh.AddNode(rr * cos_bot, rr * sin_bot, 0)
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498 <span style="font-family: 'Times New Roman', serif;"># bottom</span></p>
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500 <p class="whs1"> dd.append(nd)
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501 <span style="font-family: 'Times New Roman', serif;"># top</span></p>
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503 <p class="whs1"> cc.append(nc)
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504 <span style="font-family: 'Times New Roman', serif;"># below top</span></p>
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506 <p class="whs1"> bb.append(nb)
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507 <span style="font-family: 'Times New Roman', serif;"># above bottom</span></p>
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509 <p class="whs1"> aa.append(na)
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510 <span style="font-family: 'Times New Roman', serif;"># bottom</span></p>
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512 <p class="whs1"> </p>
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514 <p class="whs1"> pass</p>
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516 <p class="whs1"> </p>
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518 <p class="whs2"># Create a polyhedral
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519 volume (12-hedron with pentagonal faces)</p>
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521 <p class="whs1">MeshEditor.AddPolyhedralVolume([dd[0],
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522 dd[1], dd[2], dd[3], dd[4], <span style="font-family: 'Times New Roman', serif;">#
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525 <p class="whs1"> dd[0],
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526 cc[0], bb[1], cc[1], dd[1], #
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529 <p class="whs1"> dd[1],
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530 cc[1], bb[2], cc[2], dd[2], #
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533 <p class="whs1"> dd[2],
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534 cc[2], bb[3], cc[3], dd[3], <span style="font-family: 'Times New Roman', serif;">#
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535 - below top</span></p>
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537 <p class="whs1"> dd[3],
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538 cc[3], bb[4], cc[4], dd[4], #
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541 <p class="whs1"> dd[4],
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542 cc[4], bb[0], cc[0], dd[0], #
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545 <p class="whs1"> aa[4],
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546 bb[4], cc[4], bb[0], aa[0], #
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549 <p class="whs1"> aa[3],
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550 bb[3], cc[3], bb[4], aa[4], #
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553 <p class="whs1"> aa[2],
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554 bb[2], cc[2], bb[3], aa[3], <span style="font-family: 'Times New Roman', serif;">#
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555 . above bottom</span></p>
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557 <p class="whs1"> aa[1],
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558 bb[1], cc[1], bb[2], aa[2], #
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561 <p class="whs1"> aa[0],
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562 bb[0], cc[0], bb[1], aa[1], #
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565 <p class="whs1"> aa[0],
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566 aa[1], aa[2], aa[3], aa[4]], <span style="font-family: 'Times New Roman', serif;">#
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569 <p class="whs1"> [5,5,5,5,5,5,5,5,5,5,5,5])</p>
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571 <p class="whs1">salome.sg.updateObjBrowser(1)
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574 <p class="whs1"> </p>
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576 <h3><a name=bookmark1>Removing Nodes and Elements</a></h3>
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578 <h4 class="whs4">Removing Nodes</h4>
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580 <p class="whs3"> </p>
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582 <p class="whs1"><span style="font-family: 'Lucida Console', monospace;">import
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583 SMESH_mechanic</span></p>
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585 <p class="whs1"> </p>
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587 <p class="whs1">mesh = SMESH_mechanic.mesh</p>
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589 <p class="whs1"> </p>
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591 <p class="whs2"># remove nodes #246
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594 <p class="whs1">res = mesh.RemoveNodes([246,
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597 <p class="whs1">if res == 1: print
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598 "Nodes removing is OK!"</p>
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600 <p class="whs1">else: print
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601 "KO nodes removing." </p>
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603 <p class="whs3"> </p>
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605 <h4>Removing Elements</h4>
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607 <p class="whs1">import SMESH_mechanic</p>
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609 <p class="whs1"> </p>
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611 <p class="whs1">mesh = SMESH_mechanic.mesh</p>
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613 <p class="whs1"> </p>
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615 <p class="whs2"># remove three elements:
\r
616 #850, #859 and #814</p>
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618 <p class="whs1">res = mesh.RemoveElements([850,
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621 <p class="whs1">if res == 1: print
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622 "Elements removing is OK!"</p>
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624 <p class="whs1">else: print
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625 "KO Elements removing." </p>
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627 <p class="whs1"> </p>
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629 <h3><a name=bookmark2>Renumbering Nodes and Elements</a></h3>
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631 <p class="whs5">import SMESH_mechanic</p>
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633 <p class="whs5"> </p>
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635 <p class="whs5">mesh = SMESH_mechanic.mesh</p>
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637 <p class="whs6"> </p>
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639 <p class="whs6"><span style="font-family: 'Lucida Console', monospace;">mesh.RenumberNodes()</span>
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642 <h3><a name=bookmark3>Moving Nodes</a></h3>
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644 <p class="whs1">import SMESH_mechanic</p>
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646 <p class="whs1"> </p>
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648 <p class="whs1">mesh = SMESH_mechanic.mesh</p>
\r
650 <p class="whs3"> </p>
\r
652 <p class="whs3"># move node #38</p>
\r
654 <p class="whs1">mesh.MoveNode(38,
\r
657 <p class="whs1"> </p>
\r
659 <p class="whs2"> </p>
\r
661 <p class="whs7"><a name=bookmark14
\r
662 style="font-weight: bold; font-size: 13.5pt;">Mesh
\r
663 through point</a></p>
\r
665 <p class="whs3"> </p>
\r
667 <p class="whs1">from geompy import
\r
670 <p class="whs1">from smesh import
\r
673 <p class="whs1"> </p>
\r
675 <p class="whs1">box = MakeBoxDXDYDZ(200,
\r
678 <p class="whs1"> </p>
\r
680 <p class="whs1">mesh = Mesh( box
\r
683 <p class="whs1">mesh.Segment().AutomaticLength(0.1)</p>
\r
685 <p class="whs1">mesh.Quadrangle()</p>
\r
687 <p class="whs1">mesh.Compute()</p>
\r
689 <p class="whs3"> </p>
\r
691 <p class="whs3"># find node at (0,0,0)</p>
\r
693 <p class="whs1">node000 = None</p>
\r
695 <p class="whs1">for vId in SubShapeAllIDs(
\r
696 box, ShapeType["VERTEX"]):</p>
\r
698 <p class="whs1"> if
\r
701 <p class="whs1"> nodeIds
\r
702 = mesh.GetSubMeshNodesId( vId, True )</p>
\r
704 <p class="whs1"> for
\r
705 node in nodeIds:</p>
\r
707 <p class="whs1"> xyz
\r
708 = mesh.GetNodeXYZ( node )</p>
\r
710 <p class="whs1"> if
\r
711 xyz[0] == 0 and xyz[1] == 0 and xyz[2] == 0 :</p>
\r
713 <p class="whs1"> node000
\r
716 <p class="whs1"> pass</p>
\r
718 <p class="whs1"> pass</p>
\r
720 <p class="whs1"> pass</p>
\r
722 <p class="whs1">if not node000:</p>
\r
724 <p class="whs1"> raise
\r
725 "node000 not found"</p>
\r
727 <p class="whs3"> </p>
\r
729 <p class="whs3"># find node000 using the
\r
730 tested function </p>
\r
732 <p class="whs1">n = mesh.FindNodeClosestTo(
\r
735 <p class="whs1">if not n == node000:</p>
\r
737 <p class="whs1"> raise
\r
738 "FindNodeClosestTo() returns " + str( n ) + " != "
\r
739 + str( node000 )</p>
\r
741 <p class="whs3"> </p>
\r
743 <p class="whs3"># check if any node will
\r
744 be found for a point inside a box</p>
\r
746 <p class="whs1">n = mesh.FindNodeClosestTo(
\r
747 100, 100, 100 )</p>
\r
749 <p class="whs1">if not n > 0:</p>
\r
751 <p class="whs1"> raise
\r
752 "FindNodeClosestTo( 100, 100, 100 ) fails"</p>
\r
754 <p class="whs3"> </p>
\r
756 <p class="whs3"># move node000 to a new
\r
759 <p class="whs1">x,y,z = -10, -10,
\r
762 <p class="whs1">n = mesh.MeshToPassThroughAPoint(
\r
765 <p class="whs1">if not n == node000:</p>
\r
767 <p class="whs1"> raise
\r
768 "FindNodeClosestTo() returns " + str( n ) + " != "
\r
769 + str( node000 )</p>
\r
771 <p class="whs3"> </p>
\r
773 <p class="whs3"># check the coordinates
\r
776 <p class="whs1">xyz = mesh.GetNodeXYZ(
\r
779 <p class="whs1">if not ( xyz[0]
\r
780 == x and xyz[1] == y and xyz[2] == z) :</p>
\r
782 <p class="whs1"> raise
\r
783 "Wrong coordinates: " + str( xyz ) + " != " + str(
\r
786 <h3><a name=bookmark4>Diagonal Inversion</a></h3>
\r
788 <p class="whs5">import salome</p>
\r
790 <p class="whs5">import smesh</p>
\r
792 <p class="whs5"> </p>
\r
794 <p class="whs8"># create an empty mesh
\r
797 <p class="whs5">mesh = smesh.Mesh()
\r
800 <p class="whs5"> </p>
\r
802 <p class="whs8"># create the following
\r
805 <p class="whs5"># .----.----.----.</p>
\r
807 <p class="whs5"># | /|
\r
811 <p class="whs5"># | /
\r
812 | / | /
\r
815 <p class="whs5"># | / |
\r
816 / | / |</p>
\r
818 <p class="whs5"># |/ |/
\r
822 <p class="whs5"># .----.----.----.</p>
\r
824 <p class="whs5"> </p>
\r
826 <p class="whs5">bb = [0, 0, 0, 0]</p>
\r
828 <p class="whs5">tt = [0, 0, 0, 0]</p>
\r
830 <p class="whs5">ff = [0, 0, 0, 0,
\r
833 <p class="whs5"> </p>
\r
835 <p class="whs5">bb[0] = mesh.AddNode(
\r
838 <p class="whs5">bb[1] = mesh.AddNode(10.,
\r
841 <p class="whs5">bb[2] = mesh.AddNode(20.,
\r
844 <p class="whs5">bb[3] = mesh.AddNode(30.,
\r
847 <p class="whs5"> </p>
\r
849 <p class="whs5">tt[0] = mesh.AddNode(
\r
852 <p class="whs5">tt[1] = mesh.AddNode(10.,
\r
855 <p class="whs5">tt[2] = mesh.AddNode(20.,
\r
858 <p class="whs5">tt[3] = mesh.AddNode(30.,
\r
861 <p class="whs5"> </p>
\r
863 <p class="whs5">ff[0] = mesh.AddFace([bb[0],
\r
866 <p class="whs5">ff[1] = mesh.AddFace([bb[0],
\r
869 <p class="whs5">ff[2] = mesh.AddFace([bb[1],
\r
872 <p class="whs5">ff[3] = mesh.AddFace([bb[1],
\r
875 <p class="whs5">ff[4] = mesh.AddFace([bb[2],
\r
878 <p class="whs5">ff[5] = mesh.AddFace([bb[2],
\r
881 <p class="whs5"> </p>
\r
883 <p class="whs8"># inverse the diagonal
\r
886 <p class="whs5">print "\nDiagonal
\r
887 inversion ... ",</p>
\r
889 <p class="whs5">res = mesh.InverseDiag(bb[1],
\r
892 <p class="whs5">if not res: print
\r
893 "failed!"</p>
\r
895 <p class="whs5">else: print
\r
896 "done."</p>
\r
898 <p class="whs6"> </p>
\r
900 <p class="whs6"><span style="font-family: 'Lucida Console', monospace;">salome.sg.updateObjBrowser(1)</span>
\r
903 <h3><a name=bookmark5>Uniting two Triangles</a></h3>
\r
905 <p class="whs9">import salome</p>
\r
907 <p class="whs9">import smesh</p>
\r
911 <p># create an empty mesh structure</p>
\r
913 <p class="whs9">mesh = smesh.Mesh()
\r
918 <p># create the following mesh:</p>
\r
920 <p class="whs9"># .----.----.----.</p>
\r
922 <p class="whs9"># | /|
\r
926 <p class="whs9"># | /
\r
927 | / | /
\r
930 <p class="whs9"># | / |
\r
931 / | / |</p>
\r
933 <p class="whs9"># |/ |/
\r
937 <p class="whs9"># .----.----.----.</p>
\r
941 <p class="whs9">bb = [0, 0, 0, 0]</p>
\r
943 <p class="whs9">tt = [0, 0, 0, 0]</p>
\r
945 <p class="whs9">ff = [0, 0, 0, 0,
\r
948 <p class="whs9"> </p>
\r
950 <p class="whs9"><span style="font-family: 'Lucida Console', monospace;">bb[0]
\r
951 = mesh.AddNode( 0., 0., 0.)</span></p>
\r
953 <p class="whs9">bb[1] = mesh.AddNode(10.,
\r
956 <p class="whs9">bb[2] = mesh.AddNode(20.,
\r
959 <p class="whs9">bb[3] = mesh.AddNode(30.,
\r
962 <p class="whs9"> </p>
\r
964 <p class="whs9">tt[0] = mesh.AddNode(
\r
967 <p class="whs9">tt[1] = mesh.AddNode(10.,
\r
970 <p class="whs9">tt[2] = mesh.AddNode(20.,
\r
973 <p class="whs9">tt[3] = mesh.AddNode(30.,
\r
976 <p class="whs9"> </p>
\r
978 <p class="whs9">ff[0] = mesh.AddFace([bb[0],
\r
981 <p class="whs9">ff[1] = mesh.AddFace([bb[0],
\r
984 <p class="whs9">ff[2] = mesh.AddFace([bb[1],
\r
987 <p class="whs9">ff[3] = mesh.AddFace([bb[1],
\r
990 <p class="whs9">ff[4] = mesh.AddFace([bb[2],
\r
993 <p class="whs9">ff[5] = mesh.AddFace([bb[2],
\r
994 tt[3], tt[2]]) </p>
\r
998 <p># delete the diagonal bb[1] - tt[2]</p>
\r
1000 <p class="whs9">print "\nUnite
\r
1001 two triangles ... ",</p>
\r
1003 <p class="whs9">res = mesh.DeleteDiag(bb[1],
\r
1006 <p class="whs9">if not res: print
\r
1007 "failed!"</p>
\r
1009 <p class="whs9">else: print
\r
1010 "done."</p>
\r
1012 <p class="whs9"> </p>
\r
1014 <p><span style="font-family: 'Lucida Console', monospace;">salome.sg.updateObjBrowser(1)</span>
\r
1017 <h3><a name=bookmark6>Uniting a Set of Triangles</a></h3>
\r
1019 <p class="whs9">import salome</p>
\r
1021 <p class="whs9">import smesh</p>
\r
1023 <p class="whs9"> </p>
\r
1025 <p class="whs10"># create an empty mesh
\r
1028 <p class="whs9">mesh = smesh.Mesh()
\r
1031 <p class="whs9"> </p>
\r
1033 <p class="whs10"># create the following
\r
1036 <p class="whs9"># .----.----.----.</p>
\r
1038 <p class="whs9"># | /|
\r
1040 /|</p>
\r
1042 <p class="whs9"># | /
\r
1043 | / | /
\r
1046 <p class="whs9"># | / |
\r
1047 / | / |</p>
\r
1049 <p class="whs9"># |/ |/
\r
1053 <p class="whs9"># .----.----.----.</p>
\r
1055 <p class="whs9"> </p>
\r
1057 <p class="whs9">bb = [0, 0, 0, 0]</p>
\r
1059 <p class="whs9">tt = [0, 0, 0, 0]</p>
\r
1061 <p class="whs9">ff = [0, 0, 0, 0,
\r
1064 <p class="whs9"> </p>
\r
1066 <p class="whs9"><span style="font-family: 'Lucida Console', monospace;">bb[0]
\r
1067 = mesh.AddNode( 0., 0., 0.)</span></p>
\r
1069 <p class="whs9">bb[1] = mesh.AddNode(10.,
\r
1072 <p class="whs9">bb[2] = mesh.AddNode(20.,
\r
1075 <p class="whs9">bb[3] = mesh.AddNode(30.,
\r
1078 <p class="whs9"> </p>
\r
1080 <p class="whs9">tt[0] = mesh.AddNode(
\r
1083 <p class="whs9">tt[1] = mesh.AddNode(10.,
\r
1086 <p class="whs9">tt[2] = mesh.AddNode(20.,
\r
1089 <p class="whs9">tt[3] = mesh.AddNode(30.,
\r
1092 <p class="whs9"> </p>
\r
1094 <p class="whs9">ff[0] = mesh.AddFace([bb[0],
\r
1095 bb[1], tt[1]])</p>
\r
1097 <p class="whs9">ff[1] = mesh.AddFace([bb[0],
\r
1098 tt[1], tt[0]])</p>
\r
1100 <p class="whs9">ff[2] = mesh.AddFace([bb[1],
\r
1101 bb[2], tt[2]])</p>
\r
1103 <p class="whs9">ff[3] = mesh.AddFace([bb[1],
\r
1104 tt[2], tt[1]])</p>
\r
1106 <p class="whs9">ff[4] = mesh.AddFace([bb[2],
\r
1107 bb[3], tt[3]])</p>
\r
1109 <p class="whs9">ff[5] = mesh.AddFace([bb[2],
\r
1110 tt[3], tt[2]])</p>
\r
1112 <p class="whs9"> </p>
\r
1114 <p class="whs10"># unite a set of triangles</p>
\r
1116 <p class="whs9"><span style="font-family: 'Lucida Console', monospace;">print
\r
1117 "\nUnite a set of triangles ... ",</span></p>
\r
1119 <p class="whs9">res = mesh.TriToQuad([ff[2],
\r
1120 ff[3], ff[4], ff[5]], smesh.FT_MinimumAngle, 60.)</p>
\r
1122 <p class="whs9">if not res: print
\r
1123 "failed!"</p>
\r
1125 <p class="whs9">else: print
\r
1126 "done."</p>
\r
1128 <p class="whs9"> </p>
\r
1130 <p class="whs9">salome.sg.updateObjBrowser(1)
\r
1133 <h3><a name=bookmark12>Orientation</a></h3>
\r
1135 <p class="whs9">import salome</p>
\r
1137 <p class="whs9">import smesh</p>
\r
1139 <p class="whs9"> </p>
\r
1141 <p># create an empty mesh structure</p>
\r
1143 <p class="whs9">mesh = smesh.Mesh()
\r
1146 <p class="whs9"> </p>
\r
1148 <p class="whs10"># build five quadrangles:</p>
\r
1150 <p class="whs9">dx = 10</p>
\r
1152 <p class="whs9">dy = 20</p>
\r
1154 <p class="whs9"> </p>
\r
1156 <p class="whs9"><span style="font-family: 'Lucida Console', monospace;">n1
\r
1157 = mesh.AddNode(0.0
\r
1158 * dx, 0, 0)</span></p>
\r
1160 <p class="whs9">n2 =
\r
1161 mesh.AddNode(1.0 * dx, 0, 0)</p>
\r
1163 <p class="whs9">n3 =
\r
1164 mesh.AddNode(2.0 * dx, 0, 0)</p>
\r
1166 <p class="whs9">n4 =
\r
1167 mesh.AddNode(3.0 * dx, 0, 0)</p>
\r
1169 <p class="whs9">n5 =
\r
1170 mesh.AddNode(4.0 * dx, 0, 0)</p>
\r
1172 <p class="whs9">n6 =
\r
1173 mesh.AddNode(5.0 * dx, 0, 0)</p>
\r
1175 <p class="whs9">n7 =
\r
1176 mesh.AddNode(0.0 * dx, dy, 0)</p>
\r
1178 <p class="whs9">n8 =
\r
1179 mesh.AddNode(1.0 * dx, dy, 0)</p>
\r
1181 <p class="whs9">n9 =
\r
1182 mesh.AddNode(2.0 * dx, dy, 0)</p>
\r
1184 <p class="whs9">n10 = mesh.AddNode(3.0
\r
1187 <p class="whs9">n11 = mesh.AddNode(4.0
\r
1190 <p class="whs9">n12 = mesh.AddNode(5.0
\r
1193 <p class="whs9"> </p>
\r
1195 <p class="whs9">f1 = mesh.AddFace([n1,
\r
1196 n2, n8 , n7 ])</p>
\r
1198 <p class="whs9">f2 = mesh.AddFace([n2,
\r
1199 n3, n9 , n8 ])</p>
\r
1201 <p class="whs9">f3 = mesh.AddFace([n3,
\r
1202 n4, n10, n9 ])</p>
\r
1204 <p class="whs9">f4 = mesh.AddFace([n4,
\r
1205 n5, n11, n10])</p>
\r
1207 <p class="whs9">f5 = mesh.AddFace([n5,
\r
1208 n6, n12, n11]) </p>
\r
1210 <p class="whs9"> </p>
\r
1212 <p class="whs10"># Change the orientation
\r
1213 of the second and the fourth faces.</p>
\r
1215 <p class="whs9">mesh.Reorient([2,
\r
1218 <p class="whs9"> </p>
\r
1220 <p class="whs9">salome.sg.updateObjBrowser(1)
\r
1223 <p class="whs9"> </p>
\r
1225 <h3><a name=bookmark7>Cutting Quadrangles</a></h3>
\r
1227 <p class="whs9">import SMESH_mechanic</p>
\r
1229 <p class="whs9"> </p>
\r
1231 <p class="whs9">smesh = SMESH_mechanic.smesh</p>
\r
1233 <p class="whs9">mesh =
\r
1234 SMESH_mechanic.mesh</p>
\r
1236 <p class="whs9"> </p>
\r
1238 <p class="whs10"># cut two quadrangles:
\r
1241 <p class="whs9">mesh.QuadToTri([405,
\r
1242 406], smesh.FT_MinimumAngle) </p>
\r
1244 <p class="whs10"> </p>
\r
1246 <h3><a name=bookmark8>Smoothing</a></h3>
\r
1248 <p class="whs9">import salome</p>
\r
1250 <p class="whs9">import geompy</p>
\r
1252 <p class="whs9"> </p>
\r
1254 <p class="whs9">import SMESH_mechanic</p>
\r
1256 <p class="whs9"> </p>
\r
1258 <p class="whs9"><span style="font-family: 'Lucida Console', monospace;">smesh
\r
1259 = SMESH_mechanic.smesh</span></p>
\r
1261 <p class="whs9">mesh = SMESH_mechanic.mesh</p>
\r
1263 <p class="whs9"> </p>
\r
1265 <p class="whs10"># select the top face</p>
\r
1267 <p class="whs9"><span style="font-family: 'Lucida Console', monospace;">faces
\r
1268 = geompy.SubShapeAllSorted(SMESH_mechanic.shape_mesh, geompy.ShapeType["FACE"])</span></p>
\r
1270 <p class="whs9">face = faces[3]</p>
\r
1272 <p class="whs9">geompy.addToStudyInFather(SMESH_mechanic.shape_mesh,
\r
1273 face, "face planar with hole")</p>
\r
1275 <p class="whs9"> </p>
\r
1277 <p class="whs9"># create a group of
\r
1278 faces to be smoothed</p>
\r
1280 <p class="whs9">GroupSmooth = mesh.GroupOnGeom(face,
\r
1281 "Group of faces (smooth)", smesh.FACE)</p>
\r
1283 <p class="whs9"> </p>
\r
1285 <p class="whs9"># perform smoothing</p>
\r
1287 <p class="whs9"> </p>
\r
1289 <p class="whs9"># boolean SmoothObject(Object,
\r
1290 IDsOfFixedNodes, MaxNbOfIterations, MaxAspectRatio, Method)</p>
\r
1292 <p class="whs9">res = mesh.SmoothObject(GroupSmooth,
\r
1293 [], 20, 2., smesh.CENTROIDAL_SMOOTH)</p>
\r
1295 <p class="whs9">print "\nSmoothing
\r
1298 <p class="whs9">if not res: print
\r
1299 "failed!"</p>
\r
1301 <p class="whs9">else: print
\r
1302 "done."</p>
\r
1304 <p class="whs9"> </p>
\r
1306 <p class="whs9">salome.sg.updateObjBrowser(1)
\r
1309 <p class="whs9"> </p>
\r
1311 <h3><a name=bookmark9>Extrusion</a></h3>
\r
1313 <p class="whs9">import salome</p>
\r
1315 <p class="whs9">import geompy</p>
\r
1317 <p class="whs9"> </p>
\r
1319 <p class="whs9">import SMESH_mechanic</p>
\r
1321 <p class="whs9"> </p>
\r
1323 <p class="whs9"><span style="font-family: 'Lucida Console', monospace;">smesh
\r
1324 = SMESH_mechanic.smesh</span></p>
\r
1326 <p class="whs9">mesh = SMESH_mechanic.mesh
\r
1329 <p class="whs9"> </p>
\r
1331 <p class="whs10"># select the top face</p>
\r
1333 <p class="whs9">faces = geompy.SubShapeAllSorted(SMESH_mechanic.shape_mesh,
\r
1334 geompy.ShapeType["FACE"])</p>
\r
1336 <p class="whs9">face = faces[7]</p>
\r
1338 <p class="whs9">geompy.addToStudyInFather(SMESH_mechanic.shape_mesh,
\r
1339 face, "face circular top")</p>
\r
1341 <p class="whs9"> </p>
\r
1343 <p class="whs9"># create a vector
\r
1346 <p class="whs9">point = smesh.PointStruct(0.,
\r
1349 <p class="whs9">vector = smesh.DirStruct(point)</p>
\r
1351 <p class="whs9"> </p>
\r
1353 <p class="whs9"># create a group to
\r
1356 <p class="whs9">GroupTri = mesh.GroupOnGeom(face,
\r
1357 "Group of faces (extrusion)", smesh.FACE)</p>
\r
1359 <p class="whs9"> </p>
\r
1361 <p class="whs9"># perform extrusion
\r
1364 <p class="whs9">mesh.ExtrusionSweepObject(GroupTri,
\r
1367 <p class="whs9"> </p>
\r
1369 <p class="whs10"><span style="font-family: 'Lucida Console', monospace;">salome.sg.updateObjBrowser(1)</span>
\r
1372 <h3><a name=bookmark10>Extrusion along a Path</a></h3>
\r
1374 <p class="whs9">import math</p>
\r
1376 <p class="whs9">import salome</p>
\r
1378 <p class="whs9"> </p>
\r
1380 <p class="whs10"># Geometry</p>
\r
1382 <p class="whs9">import geompy</p>
\r
1384 <p class="whs10"> </p>
\r
1386 <p class="whs10"># 1. Create points</p>
\r
1388 <p class="whs9">points = [[0, 0],
\r
1389 [50, 30], [50, 110], [0, 150], [-80, 150], [-130, 70], [-130, -20]]</p>
\r
1391 <p class="whs9"> </p>
\r
1393 <p class="whs9">iv = 1</p>
\r
1395 <p class="whs9">vertices = []</p>
\r
1397 <p class="whs9">for point in points:</p>
\r
1399 <p class="whs11">vert
\r
1400 = geompy.MakeVertex(point[0], point[1], 0)</p>
\r
1402 <p class="whs11">geompy.addToStudy(vert,
\r
1403 "Vertex_" + `iv`)</p>
\r
1405 <p class="whs11">vertices.append(vert)</p>
\r
1407 <p class="whs11">iv
\r
1410 <p class="whs11">pass</p>
\r
1412 <p class="whs10"> </p>
\r
1414 <p class="whs10"># 2. Create edges and
\r
1417 <p class="whs9">Edge_straight = geompy.MakeEdge(vertices[0],
\r
1420 <p class="whs9">Edge_bezierrr = geompy.MakeBezier(vertices)</p>
\r
1422 <p class="whs9">Wire_polyline = geompy.MakePolyline(vertices)</p>
\r
1424 <p class="whs9">Edge_Circle =
\r
1425 geompy.MakeCircleThreePnt(vertices[0], vertices[1], vertices[2])</p>
\r
1427 <p class="whs9"> </p>
\r
1429 <p class="whs9">geompy.addToStudy(Edge_straight,
\r
1430 "Edge_straight")</p>
\r
1432 <p class="whs9">geompy.addToStudy(Edge_bezierrr,
\r
1433 "Edge_bezierrr")</p>
\r
1435 <p class="whs9">geompy.addToStudy(Wire_polyline,
\r
1436 "Wire_polyline")</p>
\r
1438 <p class="whs9">geompy.addToStudy(Edge_Circle
\r
1439 , "Edge_Circle")</p>
\r
1441 <p class="whs10"> </p>
\r
1443 <p class="whs10"># 3. Explode wire on
\r
1444 edges, as they will be used for mesh extrusion</p>
\r
1446 <p class="whs9">Wire_polyline_edges
\r
1447 = geompy.SubShapeAll(Wire_polyline, geompy.ShapeType["EDGE"])</p>
\r
1449 <p class="whs9">for ii in range(len(Wire_polyline_edges)):</p>
\r
1451 <p class="whs11">geompy.addToStudyInFather(Wire_polyline,
\r
1452 Wire_polyline_edges[ii], "Edge_" + `ii + 1`)</p>
\r
1454 <p class="whs11">pass</p>
\r
1456 <p class="whs12"> </p>
\r
1458 <p class="whs10"># Mesh</p>
\r
1460 <p class="whs9">import smesh</p>
\r
1462 <p class="whs9"> </p>
\r
1464 <p class="whs13"># Mesh
\r
1465 the given shape with the given 1d hypothesis</p>
\r
1467 <p class="whs14">def
\r
1468 Mesh1D(shape1d, nbSeg, name):</p>
\r
1470 <p class="whs14"> mesh1d_tool
\r
1471 = smesh.Mesh(shape1d, name)</p>
\r
1473 <p class="whs14"> algo
\r
1474 = mesh1d_tool.Segment()</p>
\r
1476 <p class="whs14"> hyp
\r
1477 = algo.NumberOfSegments(nbSeg)</p>
\r
1479 <p class="whs14"> isDone
\r
1480 = mesh1d_tool.Compute()</p>
\r
1482 <p class="whs14"> if
\r
1483 not isDone: print 'Mesh ', name, ': computation failed'</p>
\r
1485 <p class="whs14"> return
\r
1488 <p class="whs13"># Create
\r
1489 a mesh with six nodes, seven edges and two quadrangle faces</p>
\r
1491 <p class="whs14">def
\r
1492 MakeQuadMesh2(mesh_name):</p>
\r
1494 <p class="whs14"> quad_1
\r
1495 = smesh.Mesh(name = mesh_name)</p>
\r
1497 <p class="whs14"> </p>
\r
1499 <p class="whs14"> <span
\r
1500 style="font-family: 'Times New Roman', serif;">#
\r
1501 six nodes</span></p>
\r
1503 <p class="whs14"> n1
\r
1504 = quad_1.AddNode(0, 20, 10)</p>
\r
1506 <p class="whs14"> n2
\r
1507 = quad_1.AddNode(0, 40, 10)</p>
\r
1509 <p class="whs14"> n3
\r
1510 = quad_1.AddNode(0, 40, 30)</p>
\r
1512 <p class="whs14"> n4
\r
1513 = quad_1.AddNode(0, 20, 30)</p>
\r
1515 <p class="whs14"> n5
\r
1516 = quad_1.AddNode(0, 0,
\r
1519 <p class="whs14"> n6
\r
1520 = quad_1.AddNode(0, 0,
\r
1523 <p class="whs14"> </p>
\r
1525 <p class="whs14"> <span
\r
1526 style="font-family: 'Times New Roman', serif;">#
\r
1527 seven edges</span></p>
\r
1529 <p class="whs14"> quad_1.AddEdge([n1,
\r
1532 <p class="whs14"> quad_1.AddEdge([n2,
\r
1535 <p class="whs14"> quad_1.AddEdge([n3,
\r
1538 <p class="whs14"> quad_1.AddEdge([n4,
\r
1541 <p class="whs14"> quad_1.AddEdge([n4,
\r
1544 <p class="whs14"> quad_1.AddEdge([n5,
\r
1547 <p class="whs14"> quad_1.AddEdge([n6,
\r
1550 <p class="whs14"> </p>
\r
1552 <p class="whs14"> <span
\r
1553 style="font-family: 'Times New Roman', serif;">#
\r
1554 two quadrangle faces</span></p>
\r
1556 <p class="whs14"> quad_1.AddFace([n1,
\r
1557 n2, n3, n4]) # 8</p>
\r
1559 <p class="whs14"> quad_1.AddFace([n1,
\r
1560 n4, n5, n6]) # 9</p>
\r
1562 <p class="whs14"> return
\r
1563 [quad_1, [1,2,3,4,5,6,7], [8,9]]</p>
\r
1565 <p class="whs14"> </p>
\r
1567 <p class="whs13"># Path
\r
1570 <p class="whs14">Edge_straight_mesh
\r
1571 = Mesh1D(Edge_straight, 7, "Edge_straight")</p>
\r
1573 <p class="whs14">Edge_bezierrr_mesh
\r
1574 = Mesh1D(Edge_bezierrr, 7, "Edge_bezierrr")</p>
\r
1576 <p class="whs14">Wire_polyline_mesh
\r
1577 = Mesh1D(Wire_polyline, 3, "Wire_polyline")</p>
\r
1579 <p class="whs14">Edge_Circle_mesh
\r
1581 Mesh1D(Edge_Circle ,
\r
1582 8, "Edge_Circle")</p>
\r
1584 <p class="whs14"> </p>
\r
1586 <p class="whs13"># Initial
\r
1587 meshes (to be extruded)</p>
\r
1589 <p class="whs14">[quad_1,
\r
1590 ee_1, ff_1] = MakeQuadMesh2("quad_1")</p>
\r
1592 <p class="whs14">[quad_2,
\r
1593 ee_2, ff_2] = MakeQuadMesh2("quad_2")</p>
\r
1595 <p class="whs14">[quad_3,
\r
1596 ee_3, ff_3] = MakeQuadMesh2("quad_3")</p>
\r
1598 <p class="whs14">[quad_4,
\r
1599 ee_4, ff_4] = MakeQuadMesh2("quad_4")</p>
\r
1601 <p class="whs14">[quad_5,
\r
1602 ee_5, ff_5] = MakeQuadMesh2("quad_5")</p>
\r
1604 <p class="whs14">[quad_6,
\r
1605 ee_6, ff_6] = MakeQuadMesh2("quad_6")</p>
\r
1607 <p class="whs14">[quad_7,
\r
1608 ee_7, ff_7] = MakeQuadMesh2("quad_7")</p>
\r
1610 <p class="whs14"> </p>
\r
1612 <p class="whs13"># ExtrusionAlongPath</p>
\r
1614 <p class="whs13"># IDsOfElements,
\r
1615 PathMesh, PathShape, NodeStart,</p>
\r
1617 <p class="whs13"># HasAngles,
\r
1618 Angles, HasRefPoint, RefPoint</p>
\r
1620 <p class="whs14">refPoint
\r
1621 = smesh.PointStruct(0, 0, 0)</p>
\r
1623 <p class="whs14">a10
\r
1624 = 10.0*math.pi/180.0</p>
\r
1626 <p class="whs14">a45
\r
1627 = 45.0*math.pi/180.0</p>
\r
1629 <p class="whs14"> </p>
\r
1631 <p class="whs13"># 1.
\r
1632 Extrusion of two mesh edges along a straight path</p>
\r
1634 <p class="whs14">error
\r
1635 = quad_1.ExtrusionAlongPath([1,2], Edge_straight_mesh, Edge_straight,
\r
1638 <p class="whs14"> 0,
\r
1639 [], 0, refPoint)</p>
\r
1641 <p class="whs14"> </p>
\r
1643 <p class="whs13"># 2.
\r
1644 Extrusion of one mesh edge along a curved path</p>
\r
1646 <p class="whs14">error
\r
1647 = quad_2.ExtrusionAlongPath([2], Edge_bezierrr_mesh, Edge_bezierrr, 1,</p>
\r
1649 <p class="whs14"> 0,
\r
1650 [], 0, refPoint)</p>
\r
1652 <p class="whs14"> </p>
\r
1654 <p class="whs13"># 3.
\r
1655 Extrusion of one mesh edge along a curved path with usage of angles</p>
\r
1657 <p class="whs14">error
\r
1658 = quad_3.ExtrusionAlongPath([2], Edge_bezierrr_mesh, Edge_bezierrr, 1,</p>
\r
1660 <p class="whs14"> 1,
\r
1661 [a45, a45, a45, 0, -a45, -a45, -a45], 0, refPoint)</p>
\r
1663 <p class="whs14"> </p>
\r
1665 <p class="whs13"># 4.
\r
1666 Extrusion of one mesh edge along the path, which is a part of a meshed
\r
1669 <p class="whs14">error
\r
1670 = quad_4.ExtrusionAlongPath([4], Wire_polyline_mesh, Wire_polyline_edges[0],
\r
1673 <p class="whs14"> 1,
\r
1674 [a10, a10, a10], 0, refPoint)</p>
\r
1676 <p class="whs14"> </p>
\r
1678 <p class="whs13"># 5.
\r
1679 Extrusion of two mesh faces along the path, which is a part of a meshed
\r
1682 <p class="whs14">error
\r
1683 = quad_5.ExtrusionAlongPath(ff_5 , Wire_polyline_mesh, Wire_polyline_edges[2],
\r
1686 <p class="whs14"> 0,
\r
1687 [], 0, refPoint)</p>
\r
1689 <p class="whs14"> </p>
\r
1691 <p class="whs13"># 6.
\r
1692 Extrusion of two mesh faces along a closed path</p>
\r
1694 <p class="whs14">error
\r
1695 = quad_6.ExtrusionAlongPath(ff_6 , Edge_Circle_mesh, Edge_Circle, 1,</p>
\r
1697 <p class="whs14"> 0,
\r
1698 [], 0, refPoint)</p>
\r
1700 <p class="whs14"> </p>
\r
1702 <p class="whs13"># 7.
\r
1703 Extrusion of two mesh faces along a closed path with usage of angles</p>
\r
1705 <p class="whs14">error
\r
1706 = quad_7.ExtrusionAlongPath(ff_7, Edge_Circle_mesh, Edge_Circle, 1,</p>
\r
1708 <p class="whs14"> 1,
\r
1709 [a45, -a45, a45, -a45, a45, -a45, a45, -a45], 0, refPoint)</p>
\r
1711 <p class="whs14"> </p>
\r
1713 <p class="whs14">salome.sg.updateObjBrowser(1)
\r
1716 <h3><a name=bookmark11>Revolution</a></h3>
\r
1718 <p class="whs9">import math</p>
\r
1720 <p class="whs9"> </p>
\r
1722 <p class="whs9">import SMESH_mechanic</p>
\r
1724 <p class="whs9"> </p>
\r
1726 <p class="whs9"><span style="font-family: 'Lucida Console', monospace;">mesh
\r
1727 = SMESH_mechanic.mesh</span></p>
\r
1729 <p class="whs9">smesh = SMESH_mechanic.smesh</p>
\r
1731 <p class="whs9"> </p>
\r
1733 <p class="whs10"># create a group of faces
\r
1734 to be revolved</p>
\r
1736 <p class="whs9">FacesRotate = [492,
\r
1737 493, 502, 503]</p>
\r
1739 <p class="whs9">GroupRotate = mesh.CreateGroup(SMESH.FACE,"Group
\r
1740 of faces (rotate)")</p>
\r
1742 <p class="whs9">GroupRotate.Add(FacesRotate)</p>
\r
1744 <p class="whs10"> </p>
\r
1746 <p class="whs10"># define revolution angle
\r
1749 <p class="whs9">angle45 = 45 * math.pi
\r
1752 <p class="whs9">axisXYZ = SMESH.AxisStruct(-38.3128,
\r
1753 -73.3658, -23.321, -13.3402, -13.3265, 6.66632)</p>
\r
1755 <p class="whs9"> </p>
\r
1757 <p class="whs10"># perform revolution
\r
1760 <p class="whs9">mesh.RotationSweepObject(GroupRotate,
\r
1761 axisXYZ, angle45, 4, 1e-5) </p>
\r
1763 <p class="whs10"> </p>
\r
1765 <h3><a name=bookmark13>Pattern Mapping</a></h3>
\r
1767 <p class="whs9">import geompy</p>
\r
1769 <p class="whs9"> </p>
\r
1771 <p class="whs9">import smesh</p>
\r
1773 <p class="whs9"> </p>
\r
1775 <p class="whs9"># define the geometry</p>
\r
1777 <p class="whs10">Box_1 = geompy.MakeBoxDXDYDZ(200.,
\r
1780 <p class="whs10">geompy.addToStudy(Box_1,
\r
1781 "Box_1")</p>
\r
1783 <p class="whs10"> </p>
\r
1785 <p class="whs10">faces = geompy.SubShapeAll(Box_1,
\r
1786 geompy.ShapeType["FACE"])</p>
\r
1788 <p class="whs10">Face_1 = faces[0]</p>
\r
1790 <p class="whs10">Face_2 = faces[1]</p>
\r
1792 <p class="whs10"> </p>
\r
1794 <p class="whs10">geompy.addToStudyInFather(Box_1,
\r
1795 Face_1, "Face_1")</p>
\r
1797 <p class="whs10">geompy.addToStudyInFather(Box_1,
\r
1798 Face_2, "Face_2")</p>
\r
1800 <p class="whs10"> </p>
\r
1802 <p class="whs9"># build a quadrangle
\r
1803 mesh 3x3 on Face_1</p>
\r
1805 <p class="whs10">Mesh_1 = smesh.Mesh(Face_1)</p>
\r
1807 <p class="whs10">algo1D = Mesh_1.Segment()</p>
\r
1809 <p class="whs10">algo1D.NumberOfSegments(3)</p>
\r
1811 <p class="whs10">Mesh_1.Quadrangle()</p>
\r
1813 <p class="whs10"> </p>
\r
1815 <p class="whs10">isDone = Mesh_1.Compute()</p>
\r
1817 <p class="whs10">if not isDone: print
\r
1818 'Mesh Mesh_1 : computation failed'</p>
\r
1820 <p class="whs10"> </p>
\r
1822 <p class="whs9"># build a triangle
\r
1823 mesh on Face_2</p>
\r
1825 <p class="whs10">Mesh_2 = smesh.Mesh(Face_2)</p>
\r
1827 <p class="whs10"> </p>
\r
1829 <p class="whs10">algo1D = Mesh_2.Segment()</p>
\r
1831 <p class="whs10">algo1D.NumberOfSegments(1)</p>
\r
1833 <p class="whs10">algo2D = Mesh_2.Triangle()</p>
\r
1835 <p class="whs10">algo2D.MaxElementArea(240)</p>
\r
1837 <p class="whs10"> </p>
\r
1839 <p class="whs10">isDone = Mesh_2.Compute()</p>
\r
1841 <p class="whs10">if not isDone: print
\r
1842 'Mesh Mesh_2 : computation failed'</p>
\r
1844 <p class="whs10"> </p>
\r
1846 <p class="whs9"># create a pattern</p>
\r
1848 <p class="whs10">pattern = smesh.GetPattern()</p>
\r
1850 <p class="whs10"> </p>
\r
1852 <p class="whs10">isDone = pattern.LoadFromFace(Mesh_2.GetMesh(),
\r
1855 <p class="whs10">if (isDone != 1): print
\r
1856 'LoadFromFace :', pattern.GetErrorCode()</p>
\r
1858 <p class="whs10"> </p>
\r
1860 <p class="whs9"># apply the pattern
\r
1861 to a face of the first mesh</p>
\r
1863 <p class="whs10">pattern.ApplyToMeshFaces(Mesh_1.GetMesh(),
\r
1866 <p class="whs10"> </p>
\r
1868 <p class="whs10">isDone = pattern.MakeMesh(Mesh_1.GetMesh(),
\r
1871 <p class="whs10">if (isDone != 1): print
\r
1872 'MakeMesh :', pattern.GetErrorCode() </p>
\r
1874 <script type="text/javascript" language="javascript1.2">
\r
1876 if (window.writeIntopicBar)
\r
1877 writeIntopicBar(0);
\r