Boots – shoes – and leggings
Patent
1995-03-17
1997-05-06
Powell, Mark R.
Boots, shoes, and leggings
395141, 395919, 36447424, G06F 1500, G06F 1900
Patent
active
056279493
ABSTRACT:
A method of computer aided design of geometric models including the steps of: defining a set of geometric entities for use in constructing the geometric models, each of the geometric entities being an abstract geometric object type that is adapted to be actualized into one or more geometric objects, the geometric entities including point class entities, curve class entities, and surface class entities; identifying some of the geometric objects by corresponding unique object identifiers; defining a plurality of relational entities along the set of geometric entities, each of which is adapted to be actualized into corresponding relational objects having having a dependency relationship upon one or more other geometric objects whose object identifiers are specified within the relational objects; wherein the relational entities include a curve class entity having a dependency relationship on a point class object; wherein at least one of the relational entities is a surface class entity having a dependency relationship on a point class object or a curve class object; and defining a set of subroutines for evaluating the plurality of geometric objects, there being a corresponding subroutine for each of the abstract geometric object types, wherein those subroutines which evaluate relational objects are programmed to make calls to an appropriate one or more subroutines to evaluate the geometric objects on which that relational object depends.
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Huynh Ba
Powell Mark R.
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