Elliptical arc generator for display systems

Details Elliptical arc generator for display systems Elliptical arc generator for display systems

1988-07-15

1990-07-10

Malzahn, David H.

Boots, shoes, and leggings

G06F 102

Patent

active

049411160

ABSTRACT:
A symbol generator useful for stroke based and raster display systems provides the ability of generating ellipses and elliptical arc segments. A look-up table provides cosine and sine values for incremental angles which are multiplied by major and minor axis scale factors for a selected ellipse. Global input parameters permit rotation of all arcs and vectors to generate orthogonal projections, thereby producing 2-D and 3-D symbology.

REFERENCES:
patent: 3917932 (1975-11-01), Saita et al.
patent: 4736201 (1988-04-01), Nakayama et al.
patent: 4789954 (1988-12-01), Iida et al.

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