The definition of an arbitrary area.
- iOS 8.0+
- macOS 10.10+
- tvOS 9.0+
- watchOS 2.0+
SKRegion object defines a mathematical shape and is typically used to determine whether a particular point lies inside this area. For example, regions are used to define the area that a physics field can affect. Regions are defined using paths and mathematical shapes and can also be combined using constructive solid geometry.