Interactive constraint-based alignment objects
US7623128B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2004 |
| Grant date | Nov 24, 2009 |
| Priority date | — |
| Expiry date | Jul 2, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T11/203
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.