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:
Jul. 28, 2009
Filed:
Apr. 28, 2005
William R. Mark, Austin, TX (US);
Gregory S. Johnson, Austin, TX (US);
Chris Burns, Austin, TX (US);
William R. Mark, Austin, TX (US);
Gregory S. Johnson, Austin, TX (US);
Chris Burns, Austin, TX (US);
Other;
Abstract
A system and method provide for determining in a computer system the intersections between a plurality of rays residing in three dimensional (3D) space and one or more surface elements residing in the 3D space. The rays or lines corresponding to the rays share a common intersection point. The method includes for each of the rays, storing the intersection point of the ray with a projection surface in the 3D space in a data structure in the computer system. For each of the surface elements, determining using projection a two-dimensional (2D) region representing the projection of the surface element onto the projection surface; and determining using intersection testing which points stored in the data structure are inside the 2D region. The points determined to be inside the 2D region represent intersection points between the surface element and the rays corresponding to the points.