Control Point Control?

 From:  OSTexo
8496.1 
Hello,

Is there a way to calculate and build offset curves and surfaces that retain the number and layout of the original curves or surfaces? For example, when I blend between two curves I have a controllable layout, but when I offset that curve I'm left with dozens of control points that make the offset curve impossible to modify as easily as the original curve. Without a PhD in mathematics is there a way to model this manually?