Apparatus and method for direct calculation of clip region

Details Apparatus and method for direct calculation of clip region Apparatus and method for direct calculation of clip region

1996-04-23

1997-06-10

Herndon, Heather R.

395133, 395119, G06T 1530

Patent

active

056385005

ABSTRACT:
An apparatus and method calculate outcodes directly from an integral representation of a floating point number defining a certain coordinate of a point of an object to be displayed. Such calculations under software control are absent any Boolean conventional branch instructions which impede system performance and utilize an integer unit rather than a floating point unit so as to enable transformations of viewing parameters and calculations of outcodes to be performed in a concurrent manner.

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patent: 5079719 (1992-01-01), Maillo
patent: 5295240 (1994-03-01), Priem et al
patent: 5357600 (1994-10-01), Shirman et al.
patent: 5369741 (1994-11-01), Hartog et al.
Foley et al., Computer Graphics Principles and Practice,1992, pp. 279-280.
Foley, van Dam, Feiner, Hughes Computer Graphics Principles and Practice Nov. 1992, pp. 111-124 and pp. 271-278.

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