Representation of polygons defined by non-zero winding numbers

Details Representation of polygons defined by non-zero winding numbers Representation of polygons defined by non-zero winding numbers

1989-06-09

1991-08-27

Oberley, Alvin E.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

360747, 364522, G09G 106

Patent

active

050437119

ABSTRACT:
In a system having a frame buffer for generating an image wherein the image is defined as an outline having an interior described by the non-zero winding rule, the system including the mehtod of providing visual images along a scan direction comprising the steps of entering into the frame buffer predetermined direction codes, determining points of intersection and points of adjacent location in the scan direction, and spatially offsetting direction codes in the scan direction for the points of intersection and points of adjacent location in the scan direction.

REFERENCES:
patent: 4364037 (1982-12-01), Walker
patent: 4554538 (1985-11-01), Bieneman
patent: 4646076 (1987-02-01), Wiedenman et al.
patent: 4677574 (1987-06-01), Kausch
patent: 4815009 (1989-03-01), Blatin
"Polygon Painting Method", IBM Technical Disclosure Bulletin, vol. 28, No. 7, Dec. 1985, pp. 3080-3081.

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