A mask that defines which lights are occluded by this sprite.
- iOS 8.0+
- macOS 10.10+
- Mac Catalyst 13.0+
- tvOS 9.0+
- watchOS 2.0+
To determine whether this sprite blocks the light (casting a shadow), the sprite’s
shadowed property is tested against the light’s
category property by performing a logical AND operation. If the comparison results in a nonzero value, the sprite casts a shadow past itself.