Explicit
Use an Explicit node () to create the selection using the selection tools for individual geometric entities (boundaries, for example) on the chosen geometric entity level. To add this node, right-click the Definitions node and choose Selections > Explicit.
Input Entities
Based on space dimension, select a Geometric entity level: Domain, Boundary, Edge, or Point for the geometric entities to add or remove from the selection list.
Select and add geometric entities in the Graphics window, using other selection methods, or by selecting the All domains, All boundaries, All edges, or All points checkbox. The selected items are highlighted in the Graphics window. Selecting the checkbox for all geometric entities locks all entities of this type as selected even if the geometry changes.
If Boundary (for 2D and 3D models) or Edge is selected, also select the Group by continuous tangent checkbox to extend the selection to all adjacent faces or edges that have continuous tangents (an angle less than the value in the Angular tolerance field) at their junctions. This grouping makes it possible to select all faces that make up a continuous sheet, for example. When the Group by continuous tangent checkbox is selected, set the tolerance on the continuity condition in the Angular tolerance field as the maximum angle between two faces or edges that are considered as having continuous tangents (a value between 0 and 180 degrees; the default value is 5 degrees).
To deselect one or some of the faces or edges that make up the group with continuous tangents, first clear the Group by continuous tangent checkbox.
Output Entities
Define the geometry objects that the selection contains. The options available and defaults depend on the selection in the Geometric entity level list as well as the space dimension of the Component.
If Domain is the input the default output is the Selected domains. Select Adjacent boundaries, Adjacent edges, or Adjacent points to use the boundaries, edges, or points next to the selected domains as the selection output (available options depend on the space dimension of the Component). If the output entities have a lower dimension than the input entities, there are also options to select exterior and interior entities of the union of the input selections. This makes it possible to, for example, make a selection of all boundaries around a domain by first selecting the domain.
By default, only exterior entities are selected. For example, if the input selections are domains selections (see 1 in Figure 6-22), and the output is adjacent boundaries, for Exterior boundaries, select
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All (default) to select all exterior boundaries (see 2 in Figure 6-22).
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Adjacent to outside to select the outer surfaces (edges in 2D) bounding the domain selection (see 3 in Figure 6-22).
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Adjacent to inside, to select the outer boundaries that are adjacent to a cavity in the domain selection (see 4 in Figure 6-22).
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None to not select any exterior boundaries.
Figure 6-22: The resulting exterior boundaries for the domain selection (1) using the options All (2), Adjacent to outside (3), and Adjacent to inside (4), respectively.
The options Adjacent to outside and Adjacent to inside are not supported for virtual geometry, for imported meshes, and for mesh-based geometries.
Select the Interior boundaries checkbox to include the interior boundaries in the selection, as shown in Figure 6-23.
Figure 6-23: The resulting interior boundaries (right) for the domain selection (left).
If a particular selection is used elsewhere in the model, including in other selections, it is not possible to change the output type, for example, from domains to boundaries.
Color
In this section, choose a color from the Color list for use with this selection. See Selection Colors.
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Creating Named Selections in the Geometry Sequence
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Explicit Selection (Geometry Sequences)
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Creating Named Selections in Mesh Sequences
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Explicit Selection (Mesh Sequences)