Patents by Inventor Thomas B. Pringle

Thomas B. Pringle has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6507348
    Abstract: A method and apparatus for clipping an object element include processing that begins by ascribing barycentric coordinates to each original vertices of an object-element wherein each barycentric coordinate is a weighting factor with respect to a corresponding original vertex. The processing continues by obtaining clipping distances for each original vertex with respect to a clipping plane. For a new vertex of an object-element that represents an intersection of an edge of the object-element with the clipping plane, the process continues by determining a barycentric coordinate for the new vertex. The determination of the new vertex is based on the barycentric coordinates of the original vertices defining the edge and the clipping distances. Having determined the barycentric coordinates for the new vertices corresponding to a clipping plane, the process is repeated for each of a plurality of other clipping planes that intersect the object-element.
    Type: Grant
    Filed: February 2, 2000
    Date of Patent: January 14, 2003
    Assignee: ATI International, SRL
    Inventors: Michael A. Mang, Ralph C. Taylor, Michael J. Manter, Thomas B. Pringle