Preserving angles of graph elbows
US9396410B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2011 |
| Grant date | Jul 19, 2016 |
| Priority date | — |
| Expiry date | Apr 5, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T11/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Techniques are provided for preserving angles at graph elbows as graph nodes are moved. A graph, which includes a first segment and a second segment that form an acute or obtuse angle at a vertex, is displayed. The first segment has a first end opposite the vertex at a first position; the second segment has a second end opposite the vertex at a second position. User input moves the second end from the second position to a third position. In response, the angle is automatically preserved by modifying a length of the first segment and a length of the second segment, without modifying the first position of the first end. Other techniques can replace two segments with a single segment if one of the segments becomes too short, or snap an elbow angle to a specified angle if moving the node causes the elbow angle to near the specified angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.