Mark A. Tapia

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This paper describes some design refinements on marking menus and shows how these refinements embody interesting and relevant design principles for HCI. These refinements are based on the design principles of: (1) maintaining visual context, (2) hiding unnecessary information, and (3) supporting skill development by graphical feedback. The result is a new(More)
Chinese lattice designs are a rich source of interesting geometric forms. We describe a parametric shape grammar that generates ice-ray lattices. We also provide an overview of shape grammars — formal, graphical production systems that perform graphical computations with parametric labeled shapes (finite arrangements of nonzero line segments with a finite(More)
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