Figure. Original View Boundary consisting of 2 splines and 3 construction lines.


Figure. Two smart points will be created on the vertical edges (which are named objects). In the figure below the right and left end point of the spline have been edited to be associated to the smart points on the vertical edges. As a result, the upper spline in the view boundary updates whenever the model is changed.


Figure. Two smart points will be created on the vertical edges (which are named objects).