The reflectivity exponent SceneKit uses when rendering the particle’s image as a cube map. Animatable.
- iOS 8.0+
- macOS 10.10+
- Mac Catalyst 13.0+
- tvOS 9.0+
- watchOS 3.0+
This property only takes effect when the
particle property is an array of six images defining a cube map. In this case, SceneKit renders each particle as a reflective sphere.
The fresnel exponent modulates the reflectivity of a surface from different view angles. At the default value of
1, reflections have the same intensity across the entire surface of the particle. At higher values, the edges of the particle are more reflective than the center.
You can animate changes to this property’s value. See Animating SceneKit Content.