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102 <h1>Grouping Elements</h1>
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104 <h3><a name=bookmark>Create a Standalone Group</a></h3>
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106 <p class="whs1"># Attention! This script has been written
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107 using the old approach basing on direct usage of SMESH idl interface.</p>
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109 <p class="whs1"># For the moment smesh package doesn't provide
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110 methods to create a standalone group. </p>
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112 <p class="whs1"># In the next SALOME version the scripts will
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113 be updated to use only the commands from smesh package.</p>
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115 <p class="whs2"> </p>
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117 <p class="whs3">import SMESH</p>
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119 <p class="whs3">import SMESH_mechanic</p>
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121 <p class="whs3"> </p>
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123 <p class="whs3">smesh =
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124 SMESH_mechanic.smesh</p>
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126 <p class="whs3">mesh =
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127 SMESH_mechanic.mesh</p>
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129 <p class="whs3">salome = SMESH_mechanic.salome</p>
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131 <p class="whs3"> </p>
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133 <p class="whs4"># Get ids of all faces
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134 with area > 100 </p>
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136 <p class="whs3">aFilterMgr = smesh.CreateFilterManager()</p>
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138 <p class="whs3">aFunctor = aFilterMgr.CreateArea()</p>
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140 <p class="whs3"> </p>
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142 <p class="whs3">aPredicate = aFilterMgr.CreateMoreThan()</p>
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144 <p class="whs3">aPredicate.SetNumFunctor(
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147 <p class="whs3">aPredicate.SetMargin(
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150 <p class="whs3"> </p>
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152 <p class="whs3">aFilter = aFilterMgr.CreateFilter()</p>
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154 <p class="whs3">aFilter.SetPredicate(
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157 <p class="whs3"> </p>
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159 <p class="whs3">anIds = aFilter.GetElementsId(
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162 <p class="whs2"> </p>
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164 <p class="whs3"> </p>
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166 <p class="whs2"># create a group consisting
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167 of faces with area > 100</p>
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169 <p class="whs3">aGroup = mesh.CreateGroup(
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170 SMESH.FACE, "Area > 100" )</p>
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172 <p class="whs3">aGroup.Add( anIds
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175 <p class="whs3"> </p>
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177 <p class="whs2"><span style="font-family: 'Lucida Console', monospace;">salome.sg.updateObjBrowser(1)</span>
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180 <p class="whs2"> </p>
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182 <p class="whs2"><img src="pics/create_group.png" x-maintain-ratio="TRUE" width="430px" height="391px" border="0" class="img_whs5"></p>
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184 <h3><a name=bookmark5>Create a Group on Geometry</a></h3>
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186 <p class="whs3">import salome</p>
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188 <p class="whs3">import geompy</p>
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190 <p class="whs3">import smesh</p>
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192 <p class="whs3"> </p>
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194 <p class="whs4"># create a box</p>
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196 <p class="whs3">box = geompy.MakeBox(0.,
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197 0., 0., 100., 100., 100.)</p>
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199 <p class="whs3">geompy.addToStudy(box,
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200 "box")</p>
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202 <p class="whs3"> </p>
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204 <p class="whs4"># add the first face
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205 of the box to the study</p>
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207 <p class="whs3">subShapeList = geompy.SubShapeAll(box,
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208 geompy.ShapeType["FACE"])</p>
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210 <p class="whs3">face = subShapeList[0]</p>
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212 <p class="whs3">geompy.addToStudyInFather(box,
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213 face, "face 1")</p>
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215 <p class="whs3"> </p>
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217 <p class="whs4"># create group of edges
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220 <p class="whs3">aGeomGroupE = geompy.CreateGroup(face,
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221 geompy.ShapeType["EDGE"])</p>
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223 <p class="whs3">geompy.AddObject(aGeomGroupE,
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226 <p class="whs3">geompy.AddObject(aGeomGroupE,
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229 <p class="whs3">geompy.AddObject(aGeomGroupE,
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232 <p class="whs3">geompy.AddObject(aGeomGroupE,
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235 <p class="whs3">geompy.addToStudyInFather(face,
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236 aGeomGroupE, "Group of Edges")</p>
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238 <p class="whs3"> </p>
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240 <p class="whs4"># create quadrangle
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241 2D mesh on the box</p>
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243 <p class="whs3">quadra = smesh.Mesh(box,
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244 "Box : quadrangle 2D mesh")</p>
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246 <p class="whs3">algo1D = quadra.Segment()</p>
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248 <p class="whs3">quadra.Quadrangle()</p>
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250 <p class="whs3">algo1D.NumberOfSegments(7)</p>
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252 <p class="whs3"> </p>
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254 <p class="whs4"># compute the mesh</p>
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256 <p class="whs3">quadra.Compute()</p>
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258 <p class="whs3"> </p>
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260 <p class="whs4"># create SMESH group
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261 on the face with name "SMESHGroup1"</p>
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263 <p class="whs3">aSmeshGroup1 = quadra.Group(face,
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264 "SMESHGroup1")</p>
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266 <p class="whs3"> </p>
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268 <p class="whs4"># create SMESH group
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269 on <aGeomGroupE> with default name</p>
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271 <p class="whs3">aSmeshGroup2 = quadra.Group(aGeomGroupE)</p>
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273 <p class="whs2"> </p>
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275 <p class="whs2"><span style="font-family: 'Lucida Console', monospace;">salome.sg.updateObjBrowser(1)</span>
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278 <h3><a name=bookmark1>Edit a Group</a></h3>
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280 <p class="whs6"># Attention! This script has been written
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281 using the old approach basing on direct usage of SMESH idl interface.</p>
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283 <p class="whs6"># For the moment smesh package doesn't
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284 provide methods to edit a group. </p>
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286 <p class="whs6"># In the next SALOME version the scripts
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287 will be updated to use only the commands from smesh package.</p>
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289 <p class="whs3"> </p>
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291 <p class="whs3">import SMESH</p>
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293 <p class="whs3">import SMESH_mechanic</p>
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295 <p class="whs3"> </p>
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297 <p class="whs3">smesh =
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298 SMESH_mechanic.smesh</p>
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300 <p class="whs3">mesh =
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301 SMESH_mechanic.mesh</p>
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303 <p class="whs3">salome = SMESH_mechanic.salome</p>
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305 <p class="whs3"> </p>
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307 <p class="whs4"># Get ids of all faces
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308 with area > 35</p>
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310 <p class="whs3">aFilterMgr = smesh.CreateFilterManager()</p>
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312 <p class="whs3">aFunctor = aFilterMgr.CreateArea()</p>
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314 <p class="whs3"> </p>
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316 <p class="whs3">aPredicate = aFilterMgr.CreateMoreThan()</p>
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318 <p class="whs3">aPredicate.SetNumFunctor(aFunctor)</p>
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320 <p class="whs3">aPredicate.SetMargin(35.)</p>
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322 <p class="whs3"> </p>
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324 <p class="whs3">aFilter = aFilterMgr.CreateFilter()</p>
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326 <p class="whs3">aFilter.SetPredicate(aPredicate)</p>
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328 <p class="whs3"> </p>
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330 <p class="whs3">anIds = aFilter.GetElementsId(mesh)</p>
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332 <p class="whs3"> </p>
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334 <p class="whs3">print "Criterion:
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335 Area > 35, Nb = ", len(anIds)</p>
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337 <p class="whs3"> </p>
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339 <p class="whs4"># create a group by
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340 adding elements with area > 35</p>
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342 <p class="whs3">aGroup = mesh.CreateGroup(SMESH.FACE,
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343 "Area > 35")</p>
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345 <p class="whs3">aGroup.Add(anIds)</p>
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347 <p class="whs3"> </p>
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349 <p class="whs4"># Get ids of all faces
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350 with area > 40</p>
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352 <p class="whs3">aFunctor = aFilterMgr.CreateArea()</p>
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354 <p class="whs3">aPredicate = aFilterMgr.CreateMoreThan()</p>
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356 <p class="whs3">aPredicate.SetNumFunctor(aFunctor)</p>
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358 <p class="whs3">aPredicate.SetMargin(40.)</p>
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360 <p class="whs3">aFilter = aFilterMgr.CreateFilter()</p>
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362 <p class="whs3">aFilter.SetPredicate(aPredicate)</p>
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364 <p class="whs3">anIds = aFilter.GetElementsId(mesh)</p>
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366 <p class="whs3">print "Criterion:
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367 Area > 40, Nb = ", len(anIds)</p>
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369 <p class="whs3"> </p>
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371 <p class="whs4"># create a group of
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372 elements with area [35; 40] by removing elements with area > 40 from
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375 <p class="whs3">aGroup.Remove(anIds)</p>
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377 <p class="whs3"> </p>
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379 <p class="whs4"># print the result</p>
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381 <p class="whs3">aGroupElemIDs =
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382 aGroup.GetListOfID()</p>
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384 <p class="whs3">print "Criterion:
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385 35 < Area < 40, Nb = ", len(aGroupElemIDs)</p>
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387 <p class="whs3">j = 1</p>
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389 <p class="whs3">for i in range(len(aGroupElemIDs)):</p>
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391 <p class="whs3"> if
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392 j > 20: j = 1; print ""</p>
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394 <p class="whs3"> print
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395 aGroupElemIDs[i],</p>
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397 <p class="whs3"> j
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400 <p class="whs3"> pass</p>
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402 <p class="whs3">print ""</p>
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404 <p class="whs3"> </p>
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406 <p class="whs3">salome.sg.updateObjBrowser(1)
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409 <p class="whs2"> </p>
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411 <p class="whs2"><img src="pics/editing_groups1.png" x-maintain-ratio="TRUE" width="463px" height="417px" border="0" class="img_whs7"> <img src="pics/editing_groups2.png" x-maintain-ratio="TRUE" width="541px" height="417px" border="0" class="img_whs8"></p>
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413 <h3><a name=bookmark2>Union of two groups</a></h3>
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415 <p class="whs1"># Attention! This script has been written
\r
416 using the old approach basing on direct usage of SMESH idl interface.</p>
\r
418 <p class="whs1"># For the moment smesh package doesn't provide
\r
419 methods to create a union of two groups. </p>
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421 <p class="whs1"># In the next SALOME version the scripts will
\r
422 be updated to use only the commands from smesh package.</p>
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424 <p class="whs3"> </p>
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426 <p class="whs3"><span style="font-family: 'Lucida Console', monospace;">import
\r
429 <p class="whs3">import SMESH_mechanic</p>
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431 <p class="whs3"> </p>
\r
433 <p class="whs3">smesh =
\r
434 SMESH_mechanic.smesh</p>
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436 <p class="whs3">mesh =
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437 SMESH_mechanic.mesh</p>
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439 <p class="whs3">salome = SMESH_mechanic.salome</p>
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441 <p class="whs3"> </p>
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443 <p class="whs3">aFilterMgr = smesh.CreateFilterManager()</p>
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445 <p class="whs3"> </p>
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447 <p class="whs4"># Criterion : AREA
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450 <p class="whs3">aFunctor = aFilterMgr.CreateArea()</p>
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452 <p class="whs3">aPredicate = aFilterMgr.CreateMoreThan()</p>
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454 <p class="whs3">aPredicate.SetNumFunctor(aFunctor)</p>
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456 <p class="whs3">aPredicate.SetMargin(20.)</p>
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458 <p class="whs3"> </p>
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460 <p class="whs3">aFilter = aFilterMgr.CreateFilter()</p>
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462 <p class="whs3">aFilter.SetPredicate(aPredicate)</p>
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464 <p class="whs3"> </p>
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466 <p class="whs3">anIds = aFilter.GetElementsId(mesh)</p>
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468 <p class="whs3">print "Criterion:
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469 Area > 20, Nb = ", len( anIds )</p>
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471 <p class="whs3"> </p>
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473 <p class="whs4"># create a group by
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474 adding elements with area > 20</p>
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476 <p class="whs3">aGroup1 = mesh.CreateGroup(SMESH.FACE,
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477 "Area > 20")</p>
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479 <p class="whs3">aGroup1.Add(anIds)</p>
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481 <p class="whs3"> </p>
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483 <p class="whs4"># Criterion : AREA
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486 <p class="whs3">aFunctor = aFilterMgr.CreateArea()</p>
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488 <p class="whs3">aPredicate = aFilterMgr.CreateEqualTo()</p>
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490 <p class="whs3">aPredicate.SetNumFunctor(aFunctor)</p>
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492 <p class="whs3">aPredicate.SetMargin(20.)</p>
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494 <p class="whs3"> </p>
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496 <p class="whs3">aFilter = aFilterMgr.CreateFilter()</p>
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498 <p class="whs3">aFilter.SetPredicate(aPredicate)</p>
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500 <p class="whs3"> </p>
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502 <p class="whs3">anIds = aFilter.GetElementsId(mesh)</p>
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504 <p class="whs3"> </p>
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506 <p class="whs3">print "Criterion:
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507 Area = 20, Nb = ", len( anIds )</p>
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509 <p class="whs3"> </p>
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511 <p class="whs4"># create a group by
\r
512 adding elements with area = 20</p>
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514 <p class="whs3">aGroup2 = mesh.CreateGroup(
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515 SMESH.FACE, "Area = 20" )</p>
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517 <p class="whs3">aGroup2.Add(anIds)</p>
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519 <p class="whs3"> </p>
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521 <p class="whs4"># create union group
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522 : area >= 20</p>
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524 <p class="whs3">aGroup3 = mesh.UnionGroups(aGroup1,
\r
525 aGroup2, "Area >= 20")</p>
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527 <p class="whs3">print "Criterion:
\r
528 Area >= 20, Nb = ", len(aGroup3.GetListOfID())</p>
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530 <p class="whs3"> </p>
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532 <p class="whs4"># Criterion : AREA
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535 <p class="whs3">aFunctor = aFilterMgr.CreateArea()</p>
\r
537 <p class="whs3">aPredicate = aFilterMgr.CreateLessThan()</p>
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539 <p class="whs3">aPredicate.SetNumFunctor(aFunctor)</p>
\r
541 <p class="whs3">aPredicate.SetMargin(20.)</p>
\r
543 <p class="whs3"> </p>
\r
545 <p class="whs3">aFilter = aFilterMgr.CreateFilter()</p>
\r
547 <p class="whs3">aFilter.SetPredicate(aPredicate)</p>
\r
549 <p class="whs3"> </p>
\r
551 <p class="whs3">anIds = aFilter.GetElementsId(mesh)</p>
\r
553 <p class="whs3">print "Criterion:
\r
554 Area < 20, Nb = ", len(anIds)</p>
\r
556 <p class="whs3"> </p>
\r
558 <p class="whs4"># create a group by
\r
559 adding elements with area < 20</p>
\r
561 <p class="whs3">aGroup4 = mesh.CreateGroup(SMESH.FACE,
\r
562 "Area < 20")</p>
\r
564 <p class="whs3">aGroup4.Add(anIds)</p>
\r
566 <p class="whs3"> </p>
\r
568 <p class="whs4"># create union group
\r
569 : area >= 20 and area < 20</p>
\r
571 <p class="whs3">aGroup5 = mesh.UnionGroups(aGroup3,
\r
572 aGroup4, "Any Area")</p>
\r
574 <p class="whs3">print "Criterion:
\r
575 Any Area, Nb = ", len(aGroup5.GetListOfID())</p>
\r
577 <p class="whs3"> </p>
\r
579 <p class="whs3">salome.sg.updateObjBrowser(1)
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582 <p class="whs3"> </p>
\r
584 <p class="whs3"><img src="pics/union_groups1.png" x-maintain-ratio="TRUE" width="394px" height="425px" border="0" class="img_whs9"></p>
\r
586 <p class="whs3"> </p>
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588 <p class="whs3"><img src="pics/union_groups2.png" x-maintain-ratio="TRUE" width="368px" height="379px" border="0" class="img_whs10"> <img src="pics/union_groups3.png" x-maintain-ratio="TRUE" width="344px" height="381px" border="0" class="img_whs11"></p>
\r
590 <p class="whs3"> </p>
\r
592 <h3><a name=bookmark3>Intersection of two groups</a></h3>
\r
594 <p class="whs6"># Attention! This script has been written
\r
595 using the old approach basing on direct usage of SMESH idl interface.</p>
\r
597 <p class="whs6"># For the moment smesh package doesn't
\r
598 provide methods to create an intersection of two groups. </p>
\r
600 <p class="whs6"># In the next SALOME version the scripts
\r
601 will be updated to use only the commands from smesh package.</p>
\r
603 <p class="whs3"> </p>
\r
605 <p class="whs3">import SMESH</p>
\r
607 <p class="whs3">import SMESH_mechanic</p>
\r
609 <p class="whs3"> </p>
\r
611 <p class="whs3">smesh =
\r
612 SMESH_mechanic.smesh</p>
\r
614 <p class="whs3">mesh =
\r
615 SMESH_mechanic.mesh</p>
\r
617 <p class="whs3">salome = SMESH_mechanic.salome</p>
\r
619 <p class="whs3"> </p>
\r
621 <p class="whs3">aFilterMgr = smesh.CreateFilterManager()</p>
\r
623 <p class="whs3"> </p>
\r
625 <p class="whs4"># Criterion : AREA
\r
628 <p class="whs3">aFunctor = aFilterMgr.CreateArea()</p>
\r
630 <p class="whs3">aPredicate = aFilterMgr.CreateMoreThan()</p>
\r
632 <p class="whs3">aPredicate.SetNumFunctor(aFunctor)</p>
\r
634 <p class="whs3">aPredicate.SetMargin(20.)</p>
\r
636 <p class="whs3"> </p>
\r
638 <p class="whs3">aFilter = aFilterMgr.CreateFilter()</p>
\r
640 <p class="whs3">aFilter.SetPredicate(aPredicate)</p>
\r
642 <p class="whs3"> </p>
\r
644 <p class="whs3">anIds = aFilter.GetElementsId(mesh)</p>
\r
646 <p class="whs3"> </p>
\r
648 <p class="whs3">print "Criterion:
\r
649 Area > 20, Nb = ", len(anIds)</p>
\r
651 <p class="whs3"> </p>
\r
653 <p class="whs4"># create a group by
\r
654 adding elements with area > 20</p>
\r
656 <p class="whs3">aGroup1 = mesh.CreateGroup(SMESH.FACE,
\r
657 "Area > 20")</p>
\r
659 <p class="whs3">aGroup1.Add(anIds)</p>
\r
661 <p class="whs3"> </p>
\r
663 <p class="whs4"># Criterion : AREA
\r
666 <p class="whs3">aFunctor = aFilterMgr.CreateArea()</p>
\r
668 <p class="whs3">aPredicate = aFilterMgr.CreateLessThan()</p>
\r
670 <p class="whs3">aPredicate.SetNumFunctor(aFunctor)</p>
\r
672 <p class="whs3">aPredicate.SetMargin(60)</p>
\r
674 <p class="whs3"> </p>
\r
676 <p class="whs3">aFilter = aFilterMgr.CreateFilter()</p>
\r
678 <p class="whs3">aFilter.SetPredicate(aPredicate)</p>
\r
680 <p class="whs3"> </p>
\r
682 <p class="whs3">anIds = aFilter.GetElementsId(mesh)</p>
\r
684 <p class="whs3"> </p>
\r
686 <p class="whs3">print "Criterion:
\r
687 Area < 60, Nb = ", len(anIds)</p>
\r
689 <p class="whs3"> </p>
\r
691 <p class="whs4"># create a group by
\r
692 adding elements with area < 60</p>
\r
694 <p class="whs3">aGroup2 = mesh.CreateGroup(SMESH.FACE,
\r
695 "Area < 60")</p>
\r
697 <p class="whs3">aGroup2.Add(anIds)</p>
\r
699 <p class="whs3"> </p>
\r
701 <p class="whs4"># create an intersection
\r
702 of groups : 20 < area < 60</p>
\r
704 <p class="whs3">aGroup3 = mesh.IntersectGroups(aGroup1,
\r
705 aGroup2, "20 < Area < 60")</p>
\r
707 <p class="whs3">print "Criterion:
\r
708 20 < Area < 60, Nb = ", len(aGroup3.GetListOfID())</p>
\r
710 <p class="whs3"> </p>
\r
712 <p class="whs3">salome.sg.updateObjBrowser(1)
\r
715 <p class="whs2"> </p>
\r
717 <p class="whs2"><img src="pics/intersect_groups1.png" x-maintain-ratio="TRUE" width="314px" height="351px" border="0" class="img_whs12"> <img src="pics/intersect_groups2.png" x-maintain-ratio="TRUE" width="319px" height="351px" border="0" class="img_whs13"> <img src="pics/intersect_groups3.png" x-maintain-ratio="TRUE" width="304px" height="352px" border="0" class="img_whs14"></p>
\r
719 <h3><a name=bookmark4>Cut of two groups</a></h3>
\r
721 <p class="whs1"># Attention! This script has been written
\r
722 using the old approach basing on direct usage of SMESH idl interface.</p>
\r
724 <p class="whs1"># For the moment smesh package doesn't provide
\r
725 methods to create a cut of two groups. </p>
\r
727 <p class="whs1"># In the next SALOME version the scripts will
\r
728 be updated to use only the commands from smesh package.</p>
\r
730 <p class="whs3"> </p>
\r
732 <p class="whs3">import SMESH</p>
\r
734 <p class="whs3">import SMESH_mechanic</p>
\r
736 <p class="whs3"> </p>
\r
738 <p class="whs3">smesh =
\r
739 SMESH_mechanic.smesh</p>
\r
741 <p class="whs3">mesh =
\r
742 SMESH_mechanic.mesh</p>
\r
744 <p class="whs3">salome = SMESH_mechanic.salome</p>
\r
746 <p class="whs3"> </p>
\r
748 <p class="whs3">aFilterMgr = smesh.CreateFilterManager()</p>
\r
750 <p class="whs3"> </p>
\r
752 <p class="whs4"># Criterion : AREA
\r
755 <p class="whs3">aFunctor = aFilterMgr.CreateArea()</p>
\r
757 <p class="whs3">aPredicate = aFilterMgr.CreateMoreThan()</p>
\r
759 <p class="whs3">aPredicate.SetNumFunctor(aFunctor)</p>
\r
761 <p class="whs3">aPredicate.SetMargin(20.)</p>
\r
763 <p class="whs3"> </p>
\r
765 <p class="whs3">aFilter = aFilterMgr.CreateFilter()</p>
\r
767 <p class="whs3">aFilter.SetPredicate(aPredicate)</p>
\r
769 <p class="whs3"> </p>
\r
771 <p class="whs3">anIds = aFilter.GetElementsId(mesh)</p>
\r
773 <p class="whs3">print "Criterion:
\r
774 Area > 20, Nb = ", len(anIds)</p>
\r
776 <p class="whs3"> </p>
\r
778 <p class="whs4"># create a group by
\r
779 adding elements with area > 20</p>
\r
781 <p class="whs3">aGroupMain = mesh.CreateGroup(SMESH.FACE,
\r
782 "Area > 20")</p>
\r
784 <p class="whs3">aGroupMain.Add(anIds)</p>
\r
786 <p class="whs3"> </p>
\r
788 <p class="whs4"># Criterion : AREA
\r
791 <p class="whs3">aFunctor = aFilterMgr.CreateArea()</p>
\r
793 <p class="whs3">aPredicate = aFilterMgr.CreateLessThan()</p>
\r
795 <p class="whs3">aPredicate.SetNumFunctor(aFunctor)</p>
\r
797 <p class="whs3">aPredicate.SetMargin(60.)</p>
\r
799 <p class="whs3"> </p>
\r
801 <p class="whs3">aFilter = aFilterMgr.CreateFilter()</p>
\r
803 <p class="whs3">aFilter.SetPredicate(aPredicate)</p>
\r
805 <p class="whs3"> </p>
\r
807 <p class="whs3">anIds = aFilter.GetElementsId(mesh)</p>
\r
809 <p class="whs3"> </p>
\r
811 <p class="whs3">print "Criterion:
\r
812 Area < 60, Nb = ", len(anIds)</p>
\r
814 <p class="whs3"> </p>
\r
816 <p class="whs4"># create a group by
\r
817 adding elements with area < 60</p>
\r
819 <p class="whs3">aGroupTool = mesh.CreateGroup(SMESH.FACE,
\r
820 "Area < 60")</p>
\r
822 <p class="whs3">aGroupTool.Add(anIds)</p>
\r
824 <p class="whs3"> </p>
\r
826 <p class="whs4"># create a cut of groups
\r
827 : area >= 60</p>
\r
829 <p class="whs3">aGroupRes = mesh.CutGroups(aGroupMain,
\r
830 aGroupTool, "Area >= 60")</p>
\r
832 <p class="whs3">print "Criterion:
\r
833 Area >= 60, Nb = ", len(aGroupRes.GetListOfID())</p>
\r
835 <p class="whs3">salome.sg.updateObjBrowser(1)
\r
838 <p class="whs3"> </p>
\r
840 <p class="whs2"><img src="pics/cut_groups1.png" x-maintain-ratio="TRUE" width="318px" height="355px" border="0" class="img_whs15"> <img src="pics/cut_groups2.png" x-maintain-ratio="TRUE" width="318px" height="355px" border="0" class="img_whs16"> <img src="pics/cut_groups3.png" x-maintain-ratio="TRUE" width="320px" height="354px" border="0" class="img_whs17"></p>
\r
842 <script type="text/javascript" language="javascript1.2">
\r
844 if (window.writeIntopicBar)
\r
845 writeIntopicBar(0);
\r