发明名称 |
Method of and device for circle generation |
摘要 |
A machine-implemented circle-generation method calculates a sequence of coordinates (xn, yn) of points approximating a circle or circular arc according to the iterative formula: <IMAGE> 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.
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申请公布号 |
US4999797(A) |
申请公布日期 |
1991.03.12 |
申请号 |
US19880277968 |
申请日期 |
1988.11.30 |
申请人 |
OKI ELECTRIC INDUSTRY CO., LTD. |
发明人 |
MATSUSHIRO, NOBUHITO;OYAKE, IKUO |
分类号 |
G06F7/548;G05B19/4103;G06T11/20 |
主分类号 |
G06F7/548 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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