请帮我查一下这段lisp问题出在哪（图），在线等！
 

请帮我查一下这段lisp问题出在哪（图），在线等！
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请帮我查一下这段lisp问题出在哪（图），在线等！
请教高手：
我想要做到附件中图片（左）侧的要求，但是只做到图中（右）侧的程序，帮我分析一下问题到底出在哪？谢谢！
(defun c:t12()
(setq cen1 (getpoint "\n中心点: "))
(setq rr1 (getdist cen1 "\n大圆半径: "))
(command "circle" cen1 rr1)
(setq en1 (entlast))
(command "circle" cen1 "d" rr1)
(setq cen2 (polar cen1 0 rr1))
(setq rr2 (getdist cen2 "\n小圆半径: "))
(setq nn (getint "\n重复几次 <8>: "))
(if (null nn) (setq nn 8))
(setq ang 0 )
(setq angdd (/ (* pi 2) nn))
(repeat nn
(command "circle" cen2 rr2)
(setq en2 (entlast))
(command "trim" en1 en2 "" (list en2 (polar cen1 ang (- rr1 rr2)))
(list en1 cen2) "")
(setq ang (+ ang angdd))
(setq cen2 (polar cen1 ang rr1))
)
(prin1)
)

d
(defun c:t12 ()
(setvar "osmode" 0)
(setq cen1 (getpoint "\n中心點: "))
(setq rr1 (getdist cen1 "\n大圓半徑: "))
(command "circle" cen1 rr1)
(setq en1 (entlast))
(command "circle" cen1 "d" rr1)
(setq cen2 (polar cen1 0 rr1))
(setq rr2 (getdist cen2 "\n小圓半徑: "))
(setq nn (getint "\n重複幾次 <8>: "))
(if (null nn)
(setq nn 8)
)
(setq ang 0)
(setq angdd (/ (* pi 2) nn))
(repeat nn
(command "circle" cen2 rr2)
(setq en2 (entlast))
(command "trim"
en1
en2
""
(list en2 (polar cen1 ang (- rr1 rr2)))
(list en1 cen2)
""
)
(setq ang (- ang angdd))
(setq cen2 (polar cen1 ang rr1))
)
(prin1)
)
要努力学习,不进则退
网络u盘：
谢谢版主，可是为什么循环里 (setq ang (- ang angdd))是用减而不是用加呢？我的是按按顺时针画的，按道理来说不是一样的啊？？
d
當然不一樣,因trim的關係,保留下來的en1會有所改變
要努力学习,不进则退
网络u盘：
我明白了，trim后，cad是默认保留顺时钟方向的弧吗？谢谢版主~~
d