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151 lines
3.4 KiB
ReStructuredText
151 lines
3.4 KiB
ReStructuredText
.. _using_operations_on_groups_page:
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****************************
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Boolean operations on groups
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****************************
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In MESH you can perform some Boolean operations on groups, which belong to one and the same mesh.
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* :ref:`union_anchor`
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* :ref:`intersection_anchor`
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* :ref:`cut_anchor`
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.. _union_anchor:
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Union of groups
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###############
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This operation allows to create a new group in such a way that all
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mesh elements that are present in the initial groups will be added to
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the new one.
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*To union groups:*
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#. In the **Mesh** menu select the **Union Groups** item. The following dialog box will appear:
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.. image:: ../images/uniongroups.png
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:align: center
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In this dialog box you should specify the name of the resulting group and set of groups which will be united.
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For example, we have two groups Group1 and Group2.
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The result of their **Union** will be Group12:
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.. image:: ../images/image133.gif
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:align: center
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.. centered::
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Group1
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.. image:: ../images/image134.gif
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:align: center
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.. centered::
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Group2
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.. image:: ../images/image135.gif
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:align: center
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.. centered::
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Group12
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#. Click the **Apply** or **Apply and Close** button to confirm creation of the group.
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**See Also** a sample TUI Script of a :ref:`tui_union_of_groups` operation.
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.. _intersection_anchor:
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Intersection of groups
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######################
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This operation allows to create a new group in such a way that all
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mesh elements that are present in all initial groups together are added to the
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new one.
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*To intersect groups:*
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#. In the **Mesh** menu select the **Intersect Groups** item. The following dialog box will appear:
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.. image:: ../images/intersectgroups.png
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:align: center
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In this dialog box you should specify the name of the resulting group and set of groups which will be intersected.
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For example, we have two groups Group1 and Group2.
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The result of their **Intersection** will be Group12a:
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.. image:: ../images/image133.gif
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:align: center
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.. centered::
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Group1
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.. image:: ../images/image134.gif
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:align: center
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.. centered::
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Group2
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.. image:: ../images/image136.gif
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:align: center
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.. centered::
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Group12a
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#. Click the **Apply** or **Apply and Close** button to confirm creation of the group.
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**See Also** a sample TUI Script of an :ref:`tui_intersection_of_groups` operation.
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.. _cut_anchor:
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Cut of groups
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#############
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This operation allows to create a new group in such a way that all
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mesh elements that are present in the main groups but are absent in the
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tool groups are added to the new one.
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*To cut groups:*
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#. In the **Mesh** menu select the **Cut Groups** item. The following dialog box will appear:
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.. image:: ../images/cutgroups.png
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:align: center
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In this dialog box you should specify the name of the resulting group and groups which will be cut.
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For example, we have two groups Group1 and Group2.
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The result of their **Cut** will be Group12b:
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.. image:: ../images/image133.gif
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:align: center
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.. centered::
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Group1
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.. image:: ../images/image134.gif
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:align: center
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.. centered::
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Group2
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.. image:: ../images/image137.gif
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:align: center
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.. centered::
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Group12b
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#. Click the **Apply** or **Apply and Close** button to confirm creation of the group.
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**See Also** a sample TUI Script of a :ref:`tui_cut_of_groups` operation.
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