The Timeline Preview toggle enables or disables previewing the impact that the selected Timeline instance has on your Scene. The Timeline Preview is toggled on by default.
When Preview is toggled off, the following occurs:
Stop()
method is not called on the PlayableDirector
when you switch between different TimelineAsset
objects in the TimelineWindow class.When the Scene Preview option is disabled in the Timeline asset Properties, the Preview toggle is unavailable and displays a warning icon.
Preview is unavailable (A) because Scene Preview is disabled
When you disable the Scene Preview option, if your Timeline instance transforms or modifies GameObjects, these changes are saved to the Scene which could result in unintended changes to scene data. You should only disable the Scene Preview option if you have manually coded a scene data management system that saves, restores, and protects scene data.
Enable the Scene Preview option to preview the affect of the Timeline instance on the Scene. When Scene Preview is enabled, the Timeline window also automatically manages and protects the scene and its scene data. It is recommended to always enable the Scene Preview option.