Method of and device for circle generation

Details Method of and device for circle generation Method of and device for circle generation

1988-11-30

1991-03-12

Harkcom, Gary V.

Boots, shoes, and leggings

G06F 102

Patent

active

049997971

ABSTRACT:
A machine-implemented circle-generation method calculates a sequence of coordinates (x.sub.n, y.sub.n) of points approximating a circle or circular arc according to the iterative formula: ##EQU1## or an approximation thereto. This formula is suitable for high-speed computation and approximates a true circle extremely closely. When rounded off to integer coordinates, the starting and ending points of a full circle coincide.

REFERENCES:
patent: 4314351 (1982-02-01), Postel et al.
patent: 4371933 (1983-02-01), Bresenham et al.
patent: 4677573 (1987-06-01), Brown et al.
patent: 4692887 (1987-09-01), Hashidate
Sonderdruck aus der Siemens-Zeitschrift, H.2, Feb. 1966, S. 61-66.
"Principles of Interactive Computer Graphics", Newman Sproull, published by McGraw-Hill, pp. 27-28.

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