mirror of
https://git.salome-platform.org/gitpub/modules/smesh.git
synced 2025-04-07 23:57:26 +05:00
176 lines
4.4 KiB
Python
176 lines
4.4 KiB
Python
#
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# Tetrahedrization of a geometry (box minus a inner cylinder).
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# Hypothesis and algorithms for the mesh generation are global
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#
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import math
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import salome
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from salome import sg
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import geompy
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import SMESH
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import smeshpy
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# -----------------------------------------------------------------------------
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geom = geompy.geom
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myBuilder = geompy.myBuilder
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ShapeTypeShell = 3
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ShapeTypeFace = 4
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ShapeTypeEdge = 6
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a = math.sqrt(2.)/4.
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ma = - a
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zero = 0.
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un = 1.
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mun= - un
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demi = 1./2.
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Orig = geom.MakePointStruct(zero,zero,zero)
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P0 = geom.MakePointStruct(a,a,zero)
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P1 = geom.MakePointStruct(zero,demi,zero)
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P2 = geom.MakePointStruct(ma,a,zero)
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P3 = geom.MakePointStruct(mun,un,zero)
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P4 = geom.MakePointStruct(un,un,zero)
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P5 = geom.MakePointStruct(zero,zero,un)
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arc = geompy.MakeArc(P0,P1,P2)
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e1 = geompy.MakeEdge(P2,P3)
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e2 = geompy.MakeEdge(P3,P4)
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e3 = geompy.MakeEdge(P4,P0)
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list = []
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list.append(arc._get_Name())
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list.append(e1._get_Name())
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list.append(e2._get_Name())
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list.append(e3._get_Name())
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wire = geompy.MakeWire(list)
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face = geompy.MakeFace(wire,1)
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dir = geompy.MakeVector(Orig,P5)
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vol1 = geompy.MakePipe(dir,face)
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angle = math.pi/2.
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dir = geom.MakeAxisStruct(zero,zero,zero,zero,zero,un)
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vol2 = geompy.MakeRotation(vol1,dir,angle)
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vol3 = geompy.MakeRotation(vol2,dir,angle)
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vol4 = geompy.MakeRotation(vol3,dir,angle)
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list = []
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list.append(vol1._get_Name())
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list.append(vol2._get_Name())
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list.append(vol3._get_Name())
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list.append(vol4._get_Name())
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volComp = geompy.MakeCompound(list)
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tol3d = 1.e-3
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vol = geom.MakeGlueFaces(volComp,tol3d)
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idVol = geompy.addToStudy(vol,"volume")
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print "Analysis of the final volume:"
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subShellList=geompy.SubShapeAll(vol,ShapeTypeShell)
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subFaceList=geompy.SubShapeAll(vol,ShapeTypeFace)
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subEdgeList=geompy.SubShapeAll(vol,ShapeTypeEdge)
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print "number of Shells in the volume : ",len(subShellList)
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print "number of Faces in the volume : ",len(subFaceList)
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print "number of Edges in the volume : ",len(subEdgeList)
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# ---- launch SMESH
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smeshgui = salome.ImportComponentGUI("SMESH")
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smeshgui.Init(salome.myStudyId)
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gen=smeshpy.smeshpy()
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# ---- create Hypothesis
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print "-------------------------- create Hypothesis"
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print "-------------------------- NumberOfSegments"
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numberOfSegments = 10
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hypothesis=gen.CreateHypothesis("NumberOfSegments")
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hypNbSeg=hypothesis._narrow(SMESH.SMESH_NumberOfSegments)
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hypNbSeg.SetNumberOfSegments(numberOfSegments)
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hypNbSegID = hypNbSeg.GetId()
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print hypNbSeg.GetName()
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print hypNbSegID
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print hypNbSeg.GetNumberOfSegments()
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idseg = smeshgui.AddNewHypothesis( salome.orb.object_to_string(hypNbSeg) )
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smeshgui.SetName(idseg, "NumberOfSegments")
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# ---- create Algorithms
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print "-------------------------- create Algorithms"
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print "-------------------------- Regular_1D"
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hypothesis=gen.CreateHypothesis("Regular_1D")
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regular1D = hypothesis._narrow(SMESH.SMESH_Regular_1D)
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regularID = smeshgui.AddNewAlgorithms( salome.orb.object_to_string(regular1D) )
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smeshgui.SetName(regularID, "Wire Discretisation")
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print "-------------------------- Quadrangle_2D"
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hypothesis=gen.CreateHypothesis("Quadrangle_2D")
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quad2D = hypothesis._narrow(SMESH.SMESH_Quadrangle_2D)
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quadID = smeshgui.AddNewAlgorithms( salome.orb.object_to_string(quad2D) )
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smeshgui.SetName(quadID, "Quadrangle_2D")
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print "-------------------------- Hexa_3D"
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hypothesis=gen.CreateHypothesis("Hexa_3D")
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hexa3D = hypothesis._narrow(SMESH.SMESH_Hexa_3D)
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hexaID = smeshgui.AddNewAlgorithms( salome.orb.object_to_string(hexa3D) )
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smeshgui.SetName(hexaID, "Hexa_3D")
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# ---- init a Mesh with the volume
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mesh=gen.Init(idVol)
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idmesh = smeshgui.AddNewMesh( salome.orb.object_to_string(mesh) )
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smeshgui.SetName(idmesh, "meshVolume")
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smeshgui.SetShape(idVol, idmesh)
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# ---- add hypothesis to the volume
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print "-------------------------- add hypothesis to the volume"
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ret=mesh.AddHypothesis(vol,regular1D)
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print ret
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ret=mesh.AddHypothesis(vol,hypNbSeg)
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print ret
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ret=mesh.AddHypothesis(vol,quad2D)
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print ret
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ret=mesh.AddHypothesis(vol,hexa3D)
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print ret
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print "-------------------------- set algoritms"
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smeshgui.SetAlgorithms( idmesh, regularID)
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smeshgui.SetHypothesis( idmesh, idseg )
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smeshgui.SetAlgorithms( idmesh, quadID )
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smeshgui.SetAlgorithms( idmesh, hexaID )
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sg.updateObjBrowser(1)
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print "-------------------------- compute the mesh of the volume"
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ret=gen.Compute(mesh,idVol)
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print ret
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if ret != 0:
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log=mesh.GetLog(0) # no erase trace
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for linelog in log:
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print linelog
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else:
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print "problem when Computing the mesh"
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sg.updateObjBrowser(1)
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