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105 lines
4.2 KiB
Plaintext
105 lines
4.2 KiB
Plaintext
/*!
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\page creating_groups_page Creating groups
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\n In MESH you can create groups of elements of different types. To
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create a group of elements in the \b Mesh menu select <b>Create
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Group</b>.
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\n To create any group you should define the following:
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<ul>
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<li><b>Mesh</b> - the name of the mesh whose elements will form your
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group. You can select your mesh in the Objet Browser or in the 3D
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viewer.</li>
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<li><b>Elements Type</b> - set of radio buttons allows to select the type of
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elements which will form your group:</li>
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<ul>
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<li><b>Nodes</b></li>
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<li><b>Edges</b></li>
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<li><b>Faces</b></li>
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<li><b>Volumes</b></li>
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</ul>
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<li><b>Name</b> field allows to enter the name of your new group.</li>
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</ul>
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SALOME Platform distinguishes between the two Group types:
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<b>Standalone Group</b> and <b>Group on Geometry</b>.
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\anchor standalone_group <br><h2>"Standalone Group"</h2>
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<b>Standalone Group</b> consists of mesh elements, which you can define in
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the following ways:
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<ul>
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<li>Choosing them manually with the mouse in the 3D Viewer. You can
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click on an element in the 3D viewer and it will be highlighted. After
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that click the \b Add button and the ID of this element will be added to
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the list.</li>
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<li>Applying Filters. The <b>Set filter</b> button allows to apply a
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definite filter to selection of the elements of your group. See more
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about filters on the
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\ref selection_filter_library_page "Selection filter library" page.</li>
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<li>By adding all existing entities of the chosen type to the
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group. For this turn on the <b>Select All</b> check box. In this
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mode all controls, which allow selecting the entities manually or by filters, are disabled.</li>
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</ul>
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To remove a selected element or elements from the list click the
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\b Remove button. The <b>Sort List</b> button allows to sort the list of IDs of
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mesh elements.
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\n <b>Select from</b> set of fields allows to choose a submesh or an existing
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group whose elements of the previously defined type will be added to
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the list of elements which will form the new group.
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\n <b>Color</b> - allows to assign to the group a certain color, for
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example, defining boundary conditions. This feature introduces a
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useful element of preprocessing in Mesh module. Note that <b>Color</b> attribute defines
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the colors used for the display of the elements of the group.
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\n <b>Warning</b> The Med Color group interface may change in future versions of Salome.
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\image html creategroup.png
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For example, to create a new group containing all entities of the
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existing group and some other faces selected in the viewer:
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<ul>
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<li> select the "Face" type of entities and input the name of the new group.</li>
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<li> checks "Group" checkbox in "Select From" group.</li>
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<li> select the existing group in the object browser or in the viewer.</li>
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<li> click "Add" in "Content" group. "Id Elements" list will be filled
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with IDs of faces belonging to the exising group.</li>
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<li> select other faces in the viewer.</li>
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<li> click "Apply" button to create the new group.</li>
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</ul>
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Please note that the new group does not have references to the source
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group. It contains only the list of face IDs. So if the old group will
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be changed, the new one will not be modified.
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\image html image130.gif
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<center>In this picture the brown cells belong to a group defined manually.</center>
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\image html image131.gif
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<center>In this picture the brown cells belong to the group defined by the criterion
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<b>Taper > 0</b>.</center>
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<b>See Also</b> a sample TUI Script of a
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\ref tui_create_standalone_group "Create a Standalone Group"
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operation.
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\anchor group_on_geom <br><h2>"Group on Geometry"</h2>
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To create a group on geometry check <b>Group on geometry</b> in the \b Group
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\b type field. <b>Group on geometry</b> contains the elements of a certain type
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belonging to the selected geometrical object. To define a group select
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in the Objet Browser or in the 3D viewer a geometrical object from
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which the elements will be taken. After confirmation of the operation
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a new group of mesh elements will be created.
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\image html a-creategroup.png
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\image html image132.gif
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<center>In this picture the cells which belong to a certain face are
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selected in green.</center>
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<b>See Also</b> a sample TUI Script of a
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\ref tui_create_group_on_geometry "Create a Group on Geometry"
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operation.
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*/
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