The duration, in seconds, for which each particle is rendered before being removed from the scene. Animatable.
- iOS 8.0+
- macOS 10.10+
- Mac Catalyst 13.0+
- tvOS 9.0+
- watchOS 3.0+
After each particle is spawned, it appears in the scene for a period of this duration before being removed from the scene. You can randomize the life spans of newly spawned particles with the
The default value is
You can animate changes to this property’s value. See Animating SceneKit Content.