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0021197: EDF 1772 SMESH: Automatic meshing hypothesis

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eap 2011-03-11 14:17:23 +00:00
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doc/salome/gui/SMESH/input/constructing_meshes.doc
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@ -25,7 +25,8 @@ The following dialog box will appear:
<li>For example, you need to mesh a 3d object. <li>For example, you need to mesh a 3d object.
\n First, type the name for your mesh in the "Name" box, by default, \n First, type the name for your mesh in the "Name" box, by default,
it is "Mesh_1". Then select the object you wish to mesh in the Object it is "Mesh_1". Then select the object you wish to mesh in the Object
Browser and click the "Add" button. Browser and click the "Add" button (if name of the object not yet
appeared in \b Geometry field).
\image html image120.png \image html image120.png
<center><em>"Add" button</em></center> <center><em>"Add" button</em></center>
@ -33,7 +34,8 @@ Browser and click the "Add" button.
Now you can define 1d Algorithm and 1d Hypotheses, which will be Now you can define 1d Algorithm and 1d Hypotheses, which will be
applied to the edges of your object. (Note that any object has edges, applied to the edges of your object. (Note that any object has edges,
even if their existence is not apparent, for example, a sphere has 4 even if their existence is not apparent, for example, a sphere has 4
edges). Click the <em>"Add Hypothesis"</em> button to add a hypothesis. edges). Click the <em>"Add Hypothesis"</em> button to add a
hypothesis.
\image html image121.png \image html image121.png
<center><em>"Add Hypothesis" button</em></center> <center><em>"Add Hypothesis" button</em></center>
@ -49,8 +51,10 @@ The use of additional hypotheses is optional (i.e. you may leave
Proceed in the same way with 2d and 3d Algorithms and Hypotheses, note Proceed in the same way with 2d and 3d Algorithms and Hypotheses, note
that the choice of hypotheses depends on the algorithm. There must be that the choice of hypotheses depends on the algorithm. There must be
one Algorithm and one or several Hypotheses for each dimension of your one Algorithm and zero or several Hypotheses for each dimension of your
object, otherwise you will not get any mesh at all. Of course, if you object (most of the standard 2D and 3D algorithms can work without
hypotheses using some default parameters),
otherwise you will not get any mesh at all. Of course, if you
wish to mesh a face, which is a 2d object, you don't need to define 3d wish to mesh a face, which is a 2d object, you don't need to define 3d
Algorithm and Hypotheses. Algorithm and Hypotheses.
\n In the <b>Object Browser</b> the structure of the new mesh will be \n In the <b>Object Browser</b> the structure of the new mesh will be
@ -66,13 +70,20 @@ hypotheses applied to the construction of the mesh;</li>
<li><b>Applied algorithms</b> folder containing the references to the <li><b>Applied algorithms</b> folder containing the references to the
algorithms applied to the construction of the mesh.</li> algorithms applied to the construction of the mesh.</li>
</ul> </ul>
<br>
There is an alternative way to create a mesh on an object simply by There is an alternative way to create a mesh on an object simply by
clicking <b>Assign a set of hypotheses</b> button and selecting between clicking <b>Assign a set of hypotheses</b> button and selecting among
Automatic Tetrahedralization or Hexahedralization. The program will pre-defined sets of hypotheses. In addition to the standard
automatically generate a 3D mesh with the most appropriate sets of hypotheses, one can create his own sets by creating
settings. In the same way you can apply this functionality for meshing CustomMeshers.xml file located in the home directory. CustomMeshers.xml
2D objects, in which case 3D algorithms are not applied.</li> file must describe sets of hypotheses the
same way as ${SMESH_ROOT_DIR}/share/salome/resources/smesh/StdMeshers.xml
file does (hypotheses sets are enclosed between <hypotheses-set-group>
tags).
\image html hypo_sets.png
<center>List of sets of hypotheses: <em>[custom]</em> is automatically added to the sets defined
by the user</center>
</li>
\anchor preview_mesh_anchor \anchor preview_mesh_anchor