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History-based design

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Type of parametric design, when parameter values that set new geometric elements are directly and unambiguously dependent on the parameter values of the elements that were built earlier. Changing a parameter of a specific geometric element results in recursive revaluation of the form of all elements, whose parameters depend on the changed parameter. Such a scheme enables effective realization of the regeneration cycle of a parametric model but constrains expressive capacity of parametric design due to blockage of circular references among parameters. A modern alternative to parametric history-based design is variational design.

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