To create the union of geometry objects, in the Geometry toolbar, from the
Boolean and Partitions (
) menu, select
Union (
). You can also right-click the
Geometry node to add this node from the
Boolean and Partitions submenu. Then enter the properties of the union operation.
Select the geometry object that you want to unite in the Graphics window. The objects appear in the
Input objects list. If the geometry sequence includes user-defined selections above the
Union node, choose
Manual to select geometry objects, or choose one of the selection nodes from the list next to
Input objects.
Click the Active button to toggle between turning ON and OFF the
Input objects selections.
Select the Keep input objects check box to use the selected geometry objects for further geometry operations.
Create a geometry object without interior boundaries by clearing the Keep interior boundaries check box. This can be useful to simplify a geometry where the interior boundaries do not separate domains with different physics nodes or materials, for example.
You can change the settings for the Repair tolerance list if you experience problems with the union operation. Geometric entities that have a distance less than the repair tolerance are merged.
Select the Resulting objects selection check box to create predefined selections (for all levels — objects, domains, boundaries, edges, and points — that are applicable) in subsequent nodes in the geometry sequence. To also make all or one of the types of resulting entities (domains, boundaries, edges, and points) that the resulting objects consist of available as selections in all applicable selection lists (in physics and materials settings, for example), choose an option from the
Show in physics (
Show in instances if in a geometry part;
Show in 3D in a plane geometry under a work plane in a 3D component) list:
All levels,
Domain selection,
Boundary selection,
Edge selection, or
Point selection. The default is
Domain selection, which is suitable for use with materials and physics defined in domains. For use with a boundary condition, for example, choose
Boundary selection. These selections do not appear as separate selection nodes in the model tree. Select
Off to not make any selection available outside of the geometry sequence. From the
Color list, choose a color for highlighting the resulting objects selection. See
Selection Colors.