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本帖最后由 476966986 于 2011-11-11 11:18 编辑
W- E' A0 u- g
i" y" @5 d b(defun c:62-12()
2 q& _! |* V/ | (setq cen (getpoint "\n请输入中心点的位置")) $ X2 T& A5 h2 A; \9 N3 Y/ e
(setq rr1 (getdist cen "\n大圆半径: ")), b( q# N0 u* U) s) J$ F
(setq rr2 (getdist cen "\n小圆半径: "))2 S5 z8 i0 _3 X7 P+ ?% \* F0 l& ^
(setq nn (getint "\n重复几次 <8>: "))
8 }: g4 G" [5 {/ G(if (null nn) (setq nn 8))
) i2 ^9 f4 V/ S b5 u (setq p4 (polar cen 0 rr1))
0 H5 K- h' R8 q" P (setq ang (/ pi 0.5 nn))
# X% ], }; \" ^# }: x/ N( J (setq rr3 (/ rr2 2))6 S3 p8 x) S" \! b! ]: f8 L& N
(setq hh (sqrt (- (* rr1 rr1)(* rr3 rr3))))
) K. f7 v1 z. J8 G& z9 d (setq ang1 (* 2 (atan (/ rr3 hh))))
5 ^1 D! L" ]( Y: r (setq p1 (polar cen -ang1 rr1))
7 C- Z$ N% p. E1 H% T2 r" }) n (setq p2 (polar cen ang1 rr1))
* f C$ {" {6 p (setq p3 (polar cen (- ang ang1) rr1))! j: f# \1 j8 p3 W3 v1 ^5 ~
(command "pline" p1 "a" "ce" p4 p2 "ce" cen p3 ""), }+ {' G) j; O& v% G( _/ Y
(command "array" (entlast) "" "p" cen nn 360 "y")
( J6 V9 q! s& b5 L (prin1)
+ w+ Z# ^3 ~3 v' ] ) |
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发表于 2011-11-11 11:00:55
楼主