Using Selection Features
A selection features in the geometry sequence creates a selection of geometric entities or objects that is a subset of all entities or objects that were generated by the sequence of features preceding the selection feature.
•
Use the ExplicitSelection feature to create a selection of entities or objects that you specify explicitly.
•
Use the BallSelection, BoxSelection, CylinderSelection, or DiskSelection feature to create a selection of entities or objects that partly or completely lie inside a given ball, box, cylinder, or disk. The input entities or objects to select among can be all entities or objects generated by the preceding features, or a subset of these entities or objects defined by a set of input selections.
•
Use the UnionSelection, IntersectionSelection, DifferenceSelection, and ComplementSelection features to combine a set of input selections using a Boolean operation.
•
Use AdjacentSelection to create a selection of entities of a given dimension that are adjacent to entities in a set of input selections.
When using input selections, the input selections must be defined by features that come before the selection feature in the geometry sequence. You set the input selections in the input property (add and subtract for DifferenceSelection), where you use trimmed tags (that is, tags without the suffix) to refer to the input selections. Usually, the trimmed tag is the same as the tag of the feature that defined the input selection. It can happen that an input selection selects entities or objects that no longer exist after building the feature preceding the selection feature. In this case, the input selection is interpreted by using an associative mapping to existing entities or objects.