public void Start(IZoom zoom, Origin o, IMousePositionService mouse)
 {
     _zoom = zoom;
     _origin = o;
     _mouse = mouse;
 }
 public ZoomController(ZoomLogic zoom, Action<CanvasPosition, Geometry.Position> focusCanvas, IMousePositionService mouse)
 {
     _zoom = zoom;
     _focus = focusCanvas;
     _mouse = mouse;
 }