Boots – shoes – and leggings
Patent
1987-11-09
1989-05-30
Harkcom, Gary V.
Boots, shoes, and leggings
364521, G06F 102
Patent
active
048357227
ABSTRACT:
A curve generator for a display system with an arc generator has for generating an arc (10) of a circle (14) from data defining the locations of two end points P.sub.1 and P.sub.3 and an intermediate point P.sub.2 on the arc. The arc generator has an initializer (40) for calculating the angle subtended between a first vector (21), from a first of the end points, P.sub.1 to the intermediate point P.sub.2, and a second vector (32), from the second of the end points P.sub.3 to the intermediate point P.sub.2, and an arc plotter (44) for defining a succession of further vectors n1 from the first end point P.sub.1 and for calculating, for each further vector, its point of intersection P.sub.n with a counterpart vector 3n, from the second end point P.sub.3, with which it subtends the same angle, whereby a succession of further points P.sub.n are plotted on the circular arc.
REFERENCES:
patent: 3917932 (1975-11-01), Saita et al.
patent: 4115863 (1978-09-01), Brown
patent: 4272808 (1981-06-01), Hartwig
patent: 4314351 (1982-02-01), Postel et al.
patent: 4484298 (1984-11-01), Inoue et al.
patent: 4692887 (1987-09-01), Hashidate
patent: 4744047 (1988-05-01), Okamoto et al.
patent: 4760548 (1988-07-01), Baker et al.
"A Linear Algorithm for Incremental Digital Display of Circular Arcs", Bresenham, Communications of the ACM, Feb. 1977, vol. 20, No. 2, pp. 100-106.
Fundamentals of Interactive Computer Graphics, Foley et al., pp. 442-446.
Clarke David A.
Farr Robert W. E.
Harkcom Gary V.
International Business Machines - Corporation
Mai Tan V.
Moore J. Dennis
Walker Mark S.
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