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130 lines
3.9 KiB
Plaintext
130 lines
3.9 KiB
Plaintext
/*!
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\page smeshpy_interface_page Python interface
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\n Python package smesh defines several classes, destined for easy and
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clear mesh creation and edition.
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\n Documentation for smesh package is available in two forms:
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\n The <a href="smeshpy_doc/modules.html"> structured
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documentation for smesh package</a>, where all methods and
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classes are grouped by their functionality, like it is done in the GUI documentation
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\n and the \ref smeshDC "linear documentation for smesh package"
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grouped only by classes, declared in the smesh.py file.
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\n The main page of the \ref smeshDC "linear documentation for smesh package"
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contains a list of data structures and a list of
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functions, provided by the package smesh.py. The first item in
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the list of data structures (\ref smeshDC::smeshDC "class smesh")
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also represents documentation for the methods of the package smesh.py itself.
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\n The package smesh.py provides an interface to create and handle
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meshes. Use it to create an empty mesh or to import it from the data file.
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\n Once a mesh has been created, it is possible to manage it via its own
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methods, described at \ref smeshDC::Mesh "class Mesh" documentation
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(it is also accessible by the second item "class Mesh" in the list of data structures).
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\n Class Mesh allows assigning algorithms to a mesh.
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\n Please note, that some algorithms,
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included in the standard Salome installation are always available:
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- REGULAR(1D), COMPOSITE(1D), MEFISTO(2D), Quadrangle(2D), Hexa(3D), etc.
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\n There are also some algorithms, which can be installed optionally,
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\n some of them are based on open-source meshers:
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- NETGEN(1D-2D,2D,1D-2D-3D,3D),
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\n others are based on commercial meshers:
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- GHS3D(3D), BLSURF(2D).
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\n To add hypotheses, use the interfaces, provided by the assigned
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algorithms.
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\n Below you can see an example of usage of the package smesh for 3d mesh generation.
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<h2>Example of 3d mesh generation with NETGEN:</h2>
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\n from geompy import *
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\n import smesh
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<b># Geometry</b>
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\n <b># an assembly of a box, a cylinder and a truncated cone meshed with tetrahedral</b>.
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<b># Define values</b>
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\n name = "ex21_lamp"
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\n cote = 60
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\n section = 20
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\n size = 200
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\n radius_1 = 80
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\n radius_2 = 40
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\n height = 100
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<b># Build a box</b>
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\n box = MakeBox(-cote, -cote, -cote, +cote, +cote, +cote)
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<b># Build a cylinder</b>
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\n pt1 = MakeVertex(0, 0, cote/3)
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\n di1 = MakeVectorDXDYDZ(0, 0, 1)
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\n cyl = MakeCylinder(pt1, di1, section, size)
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<b># Build a truncated cone</b>
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\n pt2 = MakeVertex(0, 0, size)
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\n cone = MakeCone(pt2, di1, radius_1, radius_2, height)
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<b># Fuse </b>
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\n box_cyl = MakeFuse(box, cyl)
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\n piece = MakeFuse(box_cyl, cone)
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<b># Add in study</b>
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\n addToStudy(piece, name)
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<b># Create a group of faces</b>
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\n group = CreateGroup(piece, ShapeType["FACE"])
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\n group_name = name + "_grp"
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\n addToStudy(group, group_name)
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\n group.SetName(group_name)
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<b># Add faces in the group</b>
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\n faces = SubShapeAllIDs(piece, ShapeType["FACE"])
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\n UnionIDs(group, faces)
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<b># Create a mesh</b>
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<b># Define a mesh on a geometry</b>
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\n tetra = smesh.Mesh(piece, name)
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<b># Define 1D hypothesis</b>
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\n algo1d = tetra.Segment()
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\n algo1d.LocalLength(10)
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<b># Define 2D hypothesis</b>
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\n algo2d = tetra.Triangle()
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\n algo2d.LengthFromEdges()
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<b># Define 3D hypothesis</b>
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\n algo3d = tetra.Tetrahedron(smesh.NETGEN)
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\n algo3d.MaxElementVolume(100)
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<b># Compute the mesh</b>
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\n tetra.Compute()
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<b># Create a groupe of faces</b>
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\n tetra.Group(group)
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\n Examples of Python scripts for all Mesh operations are available by
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the following links:
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<ul>
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<li>\subpage tui_creating_meshes_page</li>
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<li>\subpage tui_viewing_meshes_page</li>
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<li>\subpage tui_defining_hypotheses_page</li>
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<li>\subpage tui_quality_controls_page</li>
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<li>\subpage tui_grouping_elements_page</li>
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<li>\subpage tui_modifying_meshes_page</li>
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<li>\subpage tui_transforming_meshes_page</li>
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</ul>
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*/
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