Boots – shoes – and leggings
Patent
1995-04-20
1997-05-20
Gordon, Paul P.
Boots, shoes, and leggings
36447429, G06F 1900
Patent
active
056318405
ABSTRACT:
A method and an apparatus for generating sculptured surfaces which enables a sculptured surface of a specified radius to be generated easily between two free curves. A plurality of base points are set on a first free curve, and a plurality of planes are generated at each of the base points using, as the normal, a tangent of the first free line, the planes including that base point. A plurality of intersections of the second free curve and the plurality of planes are determined. A plurality of circular arcs of a specified radius are generated on each of the plurality of planes using the base point and the intersection as endpoints. A sculptured surface is then generated based on the first free curve, the second free curve, and the plurality of circular arcs.
REFERENCES:
patent: 4866631 (1989-09-01), Kuragano et al.
patent: 5065348 (1991-11-01), Kuragano et al.
patent: 5345546 (1994-09-01), Harada et al.
patent: 5410645 (1995-04-01), Ooka et al.
Les Piegl, University of S. Florida, "On NURBS: A Survey," IEEE Computer Graphics and Applications II (1991) Jan., No. 1, Los Alamitos, CA, pp. 55-71.
L. Piegl, "Key Developments in Computer-Aided Geometric Design," vol. 21, No. 5, Jun. 1989, London, GB, pp. 262-273.
Kuragano Tetsuzo
Ooka Miwa
Garland Steven R.
Gordon Paul P.
Sony Corporation
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