The Vellum Interface Ashlar-Vellum

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1 vellum interface

1.1 drafting assistant
1.2 associativity & history tree
1.3 dimensionally-constrained, equation-driven parametrics





the vellum interface
drafting assistant

drafting assistant automatically keeps track of points , parts of geometry. brushing on entity, drafting assistant wakes relevant points such tangent, on, center , midpoint , parallel or perpendicular .


associativity & history tree

a feature of xenon , cobalt, associativity increases productivity of design iterations automatically updating related objects when changes made defining geometry. updates 2d sheet views, preserving annotations made on sheets.


a key element of associativity history tree lists features , associations of model in order created. facilitates changes model because features can selected , edited instead of portions deleted , rebuilt, required programs not contain history. changes rippled through entire model , 2d drawing sheets using associativity.


dimensionally-constrained, equation-driven parametrics

found in ashlar-vellum’s cobalt , graphite software, parametrics drive shape of design mathematical equations , relationships. facilitate creation of part families varying features. when 1 dimension changes, others within model change or not, according equations established govern relationships.







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