The key for choosing whether to ignore back-facing polygons in physics shapes when searching for contacts.
- iOS 8.0+
- macOS 10.10+
- Mac Catalyst 13.0+Beta
- tvOS 9.0+
- watchOS 2.0+
The value for this key is an
NSNumber object containing a Boolean value. The default value is
true, specifying that the search should only return contacts with the exterior surfaces of any physics shapes. Change the value to
false to consider contacts with both interior and exterior surfaces.
This key applies only to ray and convex sweep tests, and only to physics shapes created using the