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139 lines
3.5 KiB
Plaintext
139 lines
3.5 KiB
Plaintext
/*!
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\page smeshpy_interface_page Python interface
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Python package smesh defines several classes, destined for easy and
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clear mesh creation and edition.
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Documentation for smesh package is available in two forms:
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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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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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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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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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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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Class \b Mesh allows assigning algorithms to a mesh.
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Please note, that some algorithms, included in the standard SALOME
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distribution are always available:
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- REGULAR (1D)
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- COMPOSITE (1D)
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- MEFISTO (2D)
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- Quadrangle (2D)
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- Hexa(3D)
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- etc...
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To add hypotheses, use the interfaces, provided by the assigned
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algorithms.
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Below you can see an example of usage of the package smesh for 3d mesh generation.
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\anchor example_3d_mesh
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<h2>Example of 3d mesh generation:</h2>
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\code
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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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\endcode
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Examples of Python scripts for all Mesh operations are available by
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the following links:
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- \subpage tui_creating_meshes_page
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- \subpage tui_cartesian_algo
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- \subpage tui_viewing_meshes_page
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- \subpage tui_defining_hypotheses_page
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- \subpage tui_quality_controls_page
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- \subpage tui_filters_page
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- \subpage tui_grouping_elements_page
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- \subpage tui_modifying_meshes_page
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- \subpage tui_transforming_meshes_page
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- \subpage tui_notebook_smesh_page
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- \subpage tui_measurements_page
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- \subpage tui_generate_flat_elements_page
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- \subpage tui_work_on_objects_from_gui
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*/
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