The major radius of the torus, defining a circle in the x- and z-axis dimensions. Animatable.
- iOS 8.0+
- macOS 10.8+
- Mac Catalyst 13.0+
- tvOS 9.0+
- watchOS 3.0+
In the definition of a torus as a surface of revolution, the ring radius is the distance from the center of a circle (defined by the
pipe property) to the axis of revolution (the y-axis of the torus’s local coordinate space). Rotating the circle around the axis forms a pipe that follows a ring-shaped path.
The default ring radius is
0. A ring radius of zero or less creates an empty geometry.
You can animate changes to this property’s value. See Animating SceneKit Content.