Persistent naming through persistent entities

摘要: Current parametric modeling systems suffer from the persistent naming problem, which is responsible for unpredictable, sometimes stunning, behavior of such when re-evaluating a model, even after simple editing operations. This paper claims that problem an inherent difficulty history-based modeling, and it little use to insist on developing more schemes end up solving only fraction problem. Instead, argued rationale behind should itself be revised. Alternative approaches define model based entities can, in fact, eliminate references non-persistent geometric entities, cause One approach described here, able take full advantage solid modeling. It provides definition domain, can safely consistently referred to. A number examples illustrate how user specification operations performed through interaction with declarative feature model.