Spin and roll: convex solids of revolution as playful interface
We present an interactive system that uses convex solids of revolution as playful interface manipulated on tabletop display. Interaction is based on the unique movements of the solids such as rolls and spins in addition to usual pointing and dragging. Touching of the solids on the display is detected by a sensor-sheet and used for applications. We developed some contents such as a draw tool and gaming applications that make full use of the solids.
Stick and roll: a physical interactive system using curved displays and rolling batons
We present a physical interactive system in which a player manipulates batons as interface on curved displays. Touching of batons on the displays are detected by sensor-sheets based on electro-magnetic induction. To show the feasibility and effectiveness of the system, we developed digital picture book contents in which a player uses batons in various ways such as rolling, pointing, and sweeping to interact with the sceneries.
Geometric Visual Instruments Based on Object Rolling
If some object can be manipulated using a part of a body, especially, using hands, to create a sequence of aesthetically or geometrically attractive visual patterns, we call it the visual instrument. In this paper, we present visual instruments based on rolling objects on geometric surfaces. First, we present visual instruments that use line segments (or physically, batons) and geometric surfaces such as a cylinder, a globe, and a sequence of truncated cylindrical surfaces on which to roll the batons. We also present the visual instrument called the “gourds”, which are made of some circular arcs. We made simulation for visualizing tempo-spatial patterns and roulettes the instruments create. Through construction of the visual instruments and their manipulation, we have confirmed that they have a high potential for use in manipulative visual performance and play.