Surfed, a freeform editor for sculptured surfaces was published in 1978 in CAD.
It premiered screen plane dragging of control points in a dynamic 3d view via a tablet with a pen tip switch. The surfaces edited were square arrays of squares. Although a variety of shapes were obtained, no previous concept was achieved. The surfaces also complied with twist compatibility constraints. It was interesting but not useful.
As the principal fortran programmer I was proud of my work 33 years ago but...
I have a Win7 pc with an NV 9800 now.
I have a mouse with a roller and 2 keys.
I have a new smooth triangular patch scheme which is not a parametric C1 mapping from a domain triangulation.
I am making an interactive 3d editor for smooth shape.