Abstract
Often a computer-aided design system acts merely as a storehouse for a collection of graphical entities. It has no knowledge of how these interrelate or what the purpose is of the design that they represent. The work described is an initial attempt to enable the user of a system interactively to provide information of this type. This is done in terms of constraints upon the geometric entities that are defined, along with these entities themselves, in a user interface language.
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Mullineux, G. The introduction of constraints into a graphics system. Engineering with Computers 3, 201–205 (1988). https://doi.org/10.1007/BF01202141
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DOI: https://doi.org/10.1007/BF01202141