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给你一个人家写的,放到cad安装目录下加载后可用,命令为bj
# p/ T# x( P* C. {: _+ Y x4 ]( N;;可改圆的半径或比例缩放; d: u1 g- Y7 v( V2 p8 }
(defun C:bj (/ SSET SC SC1 SSLEN NT)) t8 k$ |& l6 S) r6 l3 u
(while (= SSET NIL)) m0 m$ {6 T, {) v) p5 O
(prompt "\n选择要修改的圆:")
1 Q( S8 T) r" f2 {% ^6 w3 z4 g/ I(setq SSET (ssget '((0 . "CIRCLE"))))
# b1 S+ i: L4 @$ x)
: ?: y! A# |$ W+ z8 S(setq SC (getstring "\n输入半径(R)/<缩放比例>: "))8 ]. n5 m2 o& P9 U* ` L: {0 m
(if (= SC "")
- b0 {5 D P! U( e(setq SC (getreal "\n缩放比例: ")); J" S) ]& S7 ~0 x2 w- t
(setq SC1 (getreal "\n输入半径: "))
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(setq SSLEN (sslength SSET))& d- v' m/ `/ p0 S2 o9 S# z
(while (> SSLEN 0)% n. n( c3 S! u" v& g+ [, \' ^+ B
(setq ENT (entget (ssname SSET (setq SSLEN (1- SSLEN))))) A6 V; f& |" ~9 o5 L
(if (= SC1 NIL)
! y& s& I* K0 f(setq NT (* SC (cdr (assoc 40 ENT))))5 D$ U; l: O+ @( Q- {2 c
(setq NT SC1)
+ |: X% e' z- f7 r" q: c/ x6 U)
: f' i& S" k- t- Q% G(entmod (subst (cons 40 NT) (assoc 40 ENT) ENT))
M6 f& z: ~$ H- ?7 v6 l0 c)
5 J0 l0 ^9 W, @7 x, M+ B' B(princ)
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