ForkMaster/smesh
1
0
Fork 0
mirror of https://git.salome-platform.org/gitpub/modules/smesh.git synced 2025-01-19 10:10:34 +05:00
Code Issues Packages Projects Releases Wiki Activity

Some precisions, complete list of mesh file formats

Browse Source
This commit is contained in:
eap 2012-07-11 07:14:36 +00:00
parent b6a42581b8
commit 3e0fdd9e71
1 changed files with 21 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
doc/salome/gui/SMESH/input/about_meshes.doc
View File

@ -5,23 +5,24 @@
\n \b MESH represents a discretization of a geometrical CAD model into \n \b MESH represents a discretization of a geometrical CAD model into
a set of entities with a simple topology. a set of entities with a simple topology.
Meshes are stored in DAT, MED and UNV formats and can be Meshes are stored in DAT, MED, UNV, STL, CGNS and SAUVE formats and can be
\subpage importing_exporting_meshes_page "imported from and exported to" \subpage importing_exporting_meshes_page "imported from and exported to"
the file in these formats. the file in these formats.
However, it is possible to \subpage constructing_meshes_page "construct meshes" It is possible to \subpage constructing_meshes_page "construct meshes"
on the basis of geometrical shapes produced in the GEOM module. on the basis of geometrical shapes produced in the GEOM module.
It is also possible to \subpage constructing_submeshes_page "create mesh on a part of the geometrical object", It is also possible to \subpage constructing_submeshes_page "mesh on a part of the geometrical object",
for example, a face. for example, a face, with different meshing parameters than the whole mesh.
Several created meshes can be \subpage building_compounds_page "combined into mesh compounds". Several created meshes can be \subpage building_compounds_page "combined into another mesh".
The whole mesh or it's part can be \subpage copy_mesh_page "copied" The whole mesh or it's part can be \subpage copy_mesh_page "copied" into another mesh.
into another mesh.
All created meshes and submeshes can be \subpage editing_meshes_page "edited". Meshing parameters of meshes and sub-meshes can be \subpage
editing_meshes_page "edited", then only a path of mesh depending on
changed parameters will be re-computed.
Meshes can be also edited using the MESH functions destined for Meshes can be edited using the MESH functions destined for
\ref modifying_meshes_page "modification" of generated meshes. \ref modifying_meshes_page "modification" of generated meshes.
The \b topology of a mesh is described by the relationships between its The \b topology of a mesh is described by the relationships between its
@ -33,19 +34,21 @@ entities including:
<li>\b Edge &mdash; 1D element of a mesh defined by two nodes.</li> <li>\b Edge &mdash; 1D element of a mesh defined by two nodes.</li>
<li>\b Face &mdash; 2D element of a mesh defined by three or four edges (closed contour).</li> <li>\b Face &mdash; 2D element of a mesh defined by three or four edges (closed contour).</li>
<li>\b Volume &mdash; 3D element of a mesh defined by several faces.</li> <li>\b Volume &mdash; 3D element of a mesh defined by several faces.</li>
<li>\b Ball element &mdash; discrete element of a mesh defined by a node and a diameter.</li>
</ul> </ul>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;These entities are &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;These entities are
considered as topological entities and they don't considered as topological entities and they don't
imply any geometric representation. Only \b Nodes reference geometric imply any geometric representation. Only \b Nodes reference geometric
representations of points with definite coordinates. The node entity representations of points with definite coordinates. The node entity
will contain additional information about its position in the space contains additional information about its position in the space
and its relations with the meshed CAD model. Its position could be and its relations with the meshed CAD model. Its position could be
described in the following way: described in the following way:
<ul> <ul>
<li><b>2D position</b>. It is a free position defined by only two coordinates x,y.</li> <li><b>3D position</b>. It characterizes the position of a node in a
<li><b>3D position</b>. It is a free position defined by three coordinates x,y and z. </li> solid geometry and is defined by three coordinates x,y and z and a
reference to the solid geometrical entity. </li>
<li><b>Surface position</b>. It characterizes the position of a node on a <li><b>Surface position</b>. It characterizes the position of a node on a
geometric surface and is defined by the u,v position in the parametric geometric surface and is defined by the u,v position in the parametric
space of the corresponding surface.</li> space of the corresponding surface.</li>