Apparatus and method for plotting curved figures represented by

Details Apparatus and method for plotting curved figures represented by Apparatus and method for plotting curved figures represented by

1988-09-23

1990-07-24

Harkcom, Gary V.

Boots, shoes, and leggings

364523, 340728, 340748, G06F 1562

Patent

active

049439359

ABSTRACT:
A value of a parameter t corresponding to the adjacent next plot point on a bit map memory in an x or y direction is calculated, one of the x or y coordinate values of a current plot point is changed by 1 to calculate a coordinate in the same direction of the next plot point, and the other coordinate of the next plot point is calculated on the basis of an approximated parameter t and cubic curve, thereby plotting the next plot point on the bit map memory.

REFERENCES:
patent: 4674058 (1987-06-01), Lindbloom et al.
patent: 4686634 (1987-08-01), Schrieber
patent: 4688182 (1987-08-01), Schrieber
patent: 4736201 (1988-04-01), Nakayama et al.
patent: 4748443 (1988-05-01), Uehara et al.
patent: 4855935 (1989-08-01), Lien et al.
R. H. Bartels & J. C. Beatty, "An Introduction to Splines for Use in Computer Graphics and Geometric Modeling", Morgan Kaufmann Publishers, Inc., Los Altos, Calif., pp. 211-215.
D. E. Knuth, "The METAFONTbook" Addison Wesley Publishing Co., Reading, Mass., pp. 13-15.

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