public void EndTimeScale(TimeScaleHandle handle)
 {
     handles.Remove(handle);
     (handle as ITimeScaleHandleInternal).Reset();
     UpdateTimeScale();
 }
 public void BeginTimeScale(TimeScaleHandle handle, float scale)
 {
     (handle as ITimeScaleHandleInternal).Init(scale);
     handles.Add(handle);
     UpdateTimeScale();
 }