I've become interested in visual programming languages, but a bit
disappointed that visual notation tends to be based on topological
rather than geometrical relationships. In fact the only example of a
computer language using geometrical notation I've found is the
ReacTable and the related TurTan, which use relative orientation and
proximity of symbols. Are there others?
Also, perhaps a more interesting question is, why aren't there more?
I can see why you wouldn't want (practically) continuous parameters of
distance involved in business logic, but how about programming
languages for use in the arts?
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