G - Physics
09
G
G09G 5/36 (2006.01) G06T 15/30 (2006.01) G06F 15/72 (1990.01)
Patent
CA 2069116
UK9-90-009 ABSTRACT GRAPHICS CLIPPING A technique of clipping overlapping areas is described. A list of graphics orders defining the graphics objects to be displayed is processed to generate a list of modified graphics orders representing those portions of the graphics objects not overlaid by an overlapping area. The mechanisms for clipping to the inside of a bounded area are adapted to determine what portion of an area of graphics lies outside a bounded area. Techniques are described for dealing with graphics in the form of lines, areas bounded by lines, image comprising an array of picture elements and symbol set characters.
International Business Machines Corporation
Kerr Alexander
LandOfFree
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