Returns the minimum region entirely enclosing the object’s contents at the specified time sample.
- iOS 9.0+
- macOS 10.11+
- Mac Catalyst 13.0+
- tvOS 9.0+
- Model I/O
A timestamp referring to timed information in the asset.
The asset’s bounding box as of the specified time sample.
Objects may or may not provide spatial content. Subclasses of
MDLObject that include spatial content, such as the
MDLMesh class, implement this method to return the axis-aligned minimal region that entirely encloses such content. Objects without spatial content return an empty bounding box—that is, a
MDLAxis structure whose
min field is greater than its
Calling this method on an object that contains other objects (that is, one whose
children property is not
nil and references a nonempty container) recursively computes the combined bounding box enclosing of the object’s children.