Techniques for drawing geodetic polygons
US8085268B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 2009 |
| Grant date | Dec 27, 2011 |
| Priority date | — |
| Expiry date | Nov 2, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09B29/005
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Techniques in a data processor for drawing on a map a geodetic polygon that straddles a splitting meridian include, in one embodiment, maintaining data that represents the geodetic polygon, the data comprising a set of geographic coordinates; transforming the set of geographic coordinates into a set of planar coordinates representing a planar polygon; splitting the planar polygon into a plurality of sub-figures; shifting at least one sub-figure of the plurality of sub-figures along a horizontal axis of two-dimensional plane to produce a shifted sub-figure; and causing the shifted sub-figure to be displayed on a map concurrently with at least one other sub-figure of the plurality of sub-figures that was not shifted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.