transform
abstract fun transform(drawingInfo: List<Map<Float, T>>, from: DrawingModel<T>?, fraction: Float): DrawingModel<T>
Returns an intermediate DrawingModel between this one and from. The returned drawing model includes the provided DrawingInfo list. fraction is the balance between from and this DrawingModel, with 0 corresponding to from, and 1 corresponding to this DrawingModel. The returned object should be an instance of the DrawingModel subclass to which this function belongs.