Compute scene bounds from loaded geometry and frame the camera around them. Returns the bounding-box center so the caller can update centering-state tracking; returns null when the scene has no visible geometry.
Called by F-key recenter via SceneManager.
Optional
Compute scene bounds from loaded geometry and frame the camera around them. Returns the bounding-box center so the caller can update centering-state tracking; returns null when the scene has no visible geometry.
Called by F-key recenter via SceneManager.