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:
Mar. 24, 2009
Filed:
Apr. 23, 2007
Kenneth J. Birdwell, Bellevue, WA (US);
Kenneth J. Birdwell, Bellevue, WA (US);
Valve Corporation, Bellevue, WA (US);
Abstract
A system and method for determining light illumination on a model in a virtual environment. A plurality of ambient cubes are defined in the virtual environment. A plurality of lights is detected. Indirect lights are also detected. Lights incident on the ambient cubes are divided into major and minor lights. For each ambient cube, six ambient cube values are calculated, each ambient cube value being related to the aggregate light illumination at a respective side of the ambient cube by the minor lights. The light illumination caused by the major lights is determined in real-time. The determined light illumination is modified by a value related to one or more ambient cube values associated with one of the plurality of ambient cubes.