A Boolean value that indicates whether the physics body is at rest.
- iOS 8.0+
- macOS 10.10+
- Mac Catalyst 13.0+
- tvOS 9.0+
- watchOS 3.0+
This property’s default value is
false, but SceneKit’s physics simulation may automatically set it to
true if the body is not moving and not affected by any forces. A resting body does not participate in the simulation until another body collides with it or you change its position or velocity or apply a force to it.