Provides information about the current and previous states of one sphere in a CullingGroup.
Additional resources: CullingGroup.onStateChanged.
| currentDistance | The current distance band index of the sphere, after the most recent culling pass. |
| hasBecomeInvisible | Did this sphere change from being visible to being invisible in the most recent culling pass? |
| hasBecomeVisible | Did this sphere change from being invisible to being visible in the most recent culling pass? |
| index | The index of the sphere that has changed. |
| isVisible | Was the sphere considered visible by the most recent culling pass? |
| previousDistance | The distance band index of the sphere before the most recent culling pass. |
| wasVisible | Was the sphere visible before the most recent culling pass? |