Graphics output system with bounded updating

Details Graphics output system with bounded updating Graphics output system with bounded updating

1996-04-22

1999-11-16

Fetting, Anton

Computer graphics processing and selective visual display system

Computer graphics processing

Three-dimension

G06T 1510

Patent

active

059866616

ABSTRACT:
A graphics output system stores a collection of graphic segments that are intended for display, potentially in overlapping relation, in a two-dimensional output image. The stored graphic segments are converted into a representation of an output image. The stored graphic segments are specified by boundary inter-relationship data respectively determining the boundary of each segment and the relative depth priorities of the segments in the output image and any clipping of each said segment to the boundary of a lower-priority segment that it can potentially overwrite. The collection of graphic segments is modified, for example, by deleting or adding segments. A new image representation is not formed from the beginning each time the segment collection is modified. Instead, the output image representation is within a region delimited by the boundary of one or more segments associated with the modification. Preferably, this bounded updating is facilitated by maintaining association data identifying the segment corresponding to each image position.

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