-.. _about_meshes_page:
+.. _about_meshes_page:
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About meshes
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+************
**MESH** represents a discrete approximation of a subset of the three-dimensional space by `elementary geometrical elements`_.
Mesh module provides several ways to create the mesh:
-* The main way is to :ref:`construct the mesh <constructing_meshes_page>` on the basis of the geometrical shape produced in the Geometry module. This way implies selection of
+* The main way is to :ref:`construct the mesh <constructing_meshes_page>` on the basis of the geometrical shape produced in the Geometry module. This way implies selection of
* a geometrical object (*main shape*) and
* *meshing parameters* (:ref:`meshing algorithms <basic_meshing_algos_page>` and characteristics (e.g. element size) of a required mesh encapsulated in :ref:`hypothesis <about_hypo_page>` objects).
.. note::
Algorithms and hypotheses used at mesh level are referred to as *global* ones and those used at sub-mesh level are referred to as *local* ones.
-
+
* Bottom-up way, using :ref:`mesh modification <modifying_meshes_page>` operations, especially :ref:`extrusion <extrusion_page>` and :ref:`revolution <revolution_page>`. To create an empty mesh not based on geometry, use the same dialog as to :ref:`construct the mesh on geometry <constructing_meshes_page>` but specify neither the geometry nor meshing algorithms.
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+
* The mesh can be :ref:`imported <importing_exporting_meshes_page>` from (and exported to) the file in MED, UNV, STL, CGNS, DAT and GMF formats.
-
+
* The 3D mesh can be generated from the 2D mesh not based on geometry, which was either :ref:`imported <importing_exporting_meshes_page>` or created in other way. To setup the meshing parameters of a mesh not based on geometry, just invoke :ref:`Edit mesh / sub-mesh <editing_meshes_page>` command on your 2D mesh.
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+
* Several meshes can be :ref:`combined <building_compounds_page>` into a new mesh.
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+
* The whole mesh or its part (sub-mesh or group) can be :ref:`copied <copy_mesh_page>` into a new mesh.
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+
* A new mesh can be created from a transformed, e.g. :ref:`translated <translation_page>`, part of the mesh.
+* A new mesh can be created from the gernation of the :ref:`dual <create_dual_mesh_page>` of a Tetrahedron Mesh.
+
Meshes can be edited using the MESH functions destined for :ref:`modification <modifying_meshes_page>` of meshes.
importing_exporting_meshes.rst
building_compounds.rst
copy_mesh.rst
+ create_dual_mesh.rst
connectivity.rst
