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We introduce a system for urban planning - called Urp -that integrates functions addressing a broad range of the fields concerns into a single, physically based workbench setting. The I/O Bulb infrastructure on which the application is based allows physical architectural models placed on an ordinary table surface to cast shadows accurate for arbitrary times of day; to throw reflections off glass facade surfaces; to affect a real-time and visually coincident simulation of pedestrian-level windflow; and so on.
Underkoffler et al. (Fri,) studied this question.