Point in polyhedron
US8248409B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 2008 |
| Grant date | Aug 21, 2012 |
| Priority date | — |
| Expiry date | Jun 12, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T17/10
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Systems, methods, and other embodiments associated with determining whether a point is located in a polyhedron are described. One example method includes identifying a ray that connects a query point to a second point located outside a minimum bounding volume of a solid polyhedron without intersecting a vertex of the solid polyhedron. The method includes counting crossings of planar faces of the solid polyhedron by the ray. The crossings may be mid-face crossings, edge crossings, and/or coplanar crossings. The crossings are selectively counted based on whether the ray actually crosses a face, grazes a face without crossing it, or runs coplanar with a face without crossing another face. The method includes controlling an automated process based on whether first point is inside the solid polyhedron.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.