The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 24, 2009
Filed:
Sep. 29, 2004
Kumud Dev Vaidya, Concord, NH (US);
Michael Collingwood Rogerson, Manchester, NH (US);
Bhamadipati S. Rao, Condord, NH (US);
Kumud Dev Vaidya, Concord, NH (US);
Michael Collingwood Rogerson, Manchester, NH (US);
Bhamadipati S. Rao, Condord, NH (US);
Autodesk, Inc., San Rafael, CA (US);
Abstract
A computer-implemented graphics system for creating and editing interactive constraint-based alignment objects. One or more drawing entities are created in the graphics system, wherein the drawing entities are linked together as an alignment object, and one or more of the entities includes a persistent tangency rule. The drawing entities comprise lines, arcs and/or spirals, although other entities are possible. The drawing entities are then edited in the graphics system, wherein the persistent tangency rules affect the drawing entities' geometry while the drawing entities are being edited. The persistent tangency rule comprises: (1) no tangency, (2) tangency to an entity before or after, or (3) tangency to an entity before and after.