Creates a level of detail with the specified geometry and threshold pixel radius.
- iOS 8.0+
- macOS 10.9+
- tvOS 9.0+
- watchOS 3.0+
The geometry to render for this level of detail.
The maximum radius (in pixels) of the geometry’s bounding sphere for this level of detail to appear.
When rendering a geometry with associated levels of detail, SceneKit calculates the radius in pixels of the circle covered by a geometry’s bounding sphere, then renders the geometry for the
SCNLevel object with the largest
radius parameter smaller than that circle.
If you pass
nil for the geometry parameter, SceneKit renders no geometry for the level of detail. Creating a level-of-detail object with no geometry allows you to skip rendering costs entirely for an object when it would appear very far away or very small.