Visual design constraint overlays
This project explored computer tools for constraint-based design, and created a novel graphical overlay of design constraints. On the basis of this project, Hanna was nominated for, and won, the UK national prize for Computer Science student of the year.
Blackwell, A.F. and Wallach, H. (2002). Diagrammatic integration of abstract operations into software work contexts. In M. Hegarty, B. Meyer and N.H.Narayanan (Eds.), Diagrammatic Representation and Inference, Springer-Verlag, pp. 191-205.