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73 lines
1.3 KiB
Python
73 lines
1.3 KiB
Python
# 3d mesh generation
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from geompy import *
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import smesh
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###
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# Geometry: an assembly of a box, a cylinder and a truncated cone
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# meshed with tetrahedral
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###
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# Define values
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name = "ex21_lamp"
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cote = 60
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section = 20
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size = 200
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radius_1 = 80
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radius_2 = 40
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height = 100
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# Build a box
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box = MakeBox(-cote, -cote, -cote, +cote, +cote, +cote)
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# Build a cylinder
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pt1 = MakeVertex(0, 0, cote/3)
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di1 = MakeVectorDXDYDZ(0, 0, 1)
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cyl = MakeCylinder(pt1, di1, section, size)
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# Build a truncated cone
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pt2 = MakeVertex(0, 0, size)
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cone = MakeCone(pt2, di1, radius_1, radius_2, height)
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# Fuse
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box_cyl = MakeFuse(box, cyl)
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piece = MakeFuse(box_cyl, cone)
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# Add to the study
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addToStudy(piece, name)
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# Create a group of faces
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group = CreateGroup(piece, ShapeType["FACE"])
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group_name = name + "_grp"
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addToStudy(group, group_name)
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group.SetName(group_name)
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# Add faces to the group
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faces = SubShapeAllIDs(piece, ShapeType["FACE"])
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UnionIDs(group, faces)
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###
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# Create a mesh
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###
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# Define a mesh on a geometry
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tetra = smesh.Mesh(piece, name)
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# Define 1D hypothesis
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algo1d = tetra.Segment()
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algo1d.LocalLength(10)
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# Define 2D hypothesis
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algo2d = tetra.Triangle()
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algo2d.LengthFromEdges()
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# Define 3D hypothesis
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algo3d = tetra.Tetrahedron()
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algo3d.MaxElementVolume(100)
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# Compute the mesh
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tetra.Compute()
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# Create a groupe of faces
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tetra.Group(group)
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