错误:参数类型错误 为什么？

jianjian88

当我运行程序后，输入插入点，提示：错误:参数类型错误：numberp: nil   为什么？
( `$ |. u/ R) s' U# b0 i& b# \我用autolisp编制绘向心球轴承的二维图形，程序如下：
(defun c:zch1 (/ p0 p1 p2 p3 p4 p5 p6 p7 p8 p9 p10 p11 p12 p13 p14 p15 p16 pc1 pc2 a fx1 fx2 t1 )
(setq d (getreal"\n 输入轴承外径"))
(setq d1 (getreal"\n 输入轴承内径"))
5 b6 p5 h/ e: q6 S(setq b (getreal"\n 输入轴承宽度"))
(if (> d 40)
(setq t1 1.5)               ;t1为绘制刨面线的线间距比例因子
(setq t2 0.7)
)
* A% _# e. i4 j# m$ v(setq a (/ (- d d1) 2.0) )     ;计算三个中间参数值
(setq fx1 (/ pi 2))
7 b: A, m. |2 f9 u5 v8 D, p(setq fx2 (/ (* 3 pi) 2))
)
(setq p0 (getpoint"\n 输入图形插入点："))
) E! L7 w1 d! C(setq p1 (polar p0 fx1 (/ d 2.0)))
, R( G$ g# K5 G: D- k7 M(setq p2 (polar p1 0 b))
(setq pc1 (list (+ (car p0) (/ b 2.0)) (+ (cadr p0) (/ (- d a) 2.0))))
(setq pc2 (polar pc1 fx2 (- d a)))      
(setq p9 (polar pc1 (/ (* pi 11) 6) (/ a 4)))
(setq p8 (polar pc1 (/ (* pi 7) 6) (/ a 4)))
(setq p4 (polar pc1 (/ pi 6) (/ a 4)))
(setq p5 (polar pc1 (/ (* pi 5) 6) (/ a 4)))
& z: S: ]" {( I/ p7 [% Q7 G(setq p3 (list (car p2) (cadr p4)))
& G. I* B! Z8 T6 X; v) m& u(setq p6 (list (car p1) (cadr p5)))
(setq p7 (list (car p1) (cadr p8)))
! l/ f0 F% Q% v: J" o- y(setq p10 (list (car p2) (cadr p9)))
(setq p11 (polar p2 fx2 a))
(setq p12 (polar p1 fx2 a))
(setq p13 (polar p0 fx2 (/ d1 2.0)))
(setq p14 (polar p13 0 b))
- t& F" R& u7 u( U, o(setq p15 (polar p2 fx2 (/ d 2.0)))
' i) B5 R6 Y% ^; i3 _" f+ U+ Y(setq p16 (polar p15 0 b))

' u7 l( f) u' n6 i9 }: G+ |; a1 g(nlayer)                                          ;调用层设置函数
(command "zoom" "w" (polar p1 fx1 10) (polar p16 fx2 10))
(command "layer" "s" 1 "")                        ；绘制轴承的上半部分
+ e- p3 f* V* d( N7 u) n4 N(command "pline" p1 p2 p3 p4 "")
1 q( t: @3 v* d, q(command "arc" p4 "ce" pc1 "a" 120)
# I) V5 l0 _  F. K(command "pline" p5 p6 p1 "")
(command "pline" p6 p7 p8 "")
7 O; p  j# E0 h5 J(command "arc" p8 "ce" pc1 "a" 120)
(command "pline" p9 p10 p11 p12 p7 "")
" V3 u" c8 g+ r) S( G" I(command "pline" p3 p10 "")
(command "arc" p9 "ce" pc1 p4)
(command "arc" p5 "ce" pc1 p8)
(command "mirror" "w" p1 p11 "" p0 (polar p0 0 b) "")  ；镜像绘制轴承的下半部分
(command "pline" p12 p13 "")
) S' C5 ^$ {( ^  }6 ~(command "pline" p11 p14 "")
(command "layer" "s" 0 "")
) u) u* Q) R( G(command "hatch" "ansi31" t1 "0" "w" p1 p3 "")         ；绘制剖面线
(command "hatch" "ansi31" t1 "90" "w" p7 p11 "")
$ Z& m& p3 @  S2 r$ F" W  V(command "hatch" "ansi31" t1 "90" "w" p13 (polar p16 fx1 (/ a 2)) "")
(command "hatch" "ansi31" t1 "0" "w" p15 (polar p16 fx1 (/ a 2)) "")
' Z( G8 Y. h9 \9 w: s; H(command "layer" "s" 3 "")
(command "pline" (polar p0 pi 2) (polar p0 0 (+ b 2)) "") ；绘制轴承中心线
2 x, @# w/ T$ z5 _(command "pline" (polar pc1 fx1 (* 1.2 (/ a 4.0)))        ；绘制滚珠中心线
         (polar pc1 fx2 (* 1.2 (/ a 4.0))) "")
(command "pline" (polar pc1 pi (* 1.2 (/ a 4.0)))
3 x2 B: r- l2 U! m- [         (polar pc1 0 (* 1.2 (/ a 4.0))) "")
8 p' F4 Q4 V5 \! s3 E(command "pline" (polar pc2 fx1 (* 1.2 (/ a 4.0)))
3 ?% }! n( F+ V) b9 M         (polar pc2 fx2 (* 1.2 (/ a 4.0))) "")
(command "pline" (polar pc1 pi (* 1.2 (/ a 4.0)))
) |  y) {1 H* u/ o         (polar pc2 0 (* 1.2 (/ a 4.0))) "")
(command "zoom" "a")
(command "regen")
)
, H* i/ f0 x1 b# {. w7 j(defun nlayer ()
(command "layer" "n" 1 "c" 1 1 "1" "continuous" 1 "")
(command "layer" "n" 2 "c" 2 2 "1" "dashed" 2 "")
6 ]' Q% a% z( C+ W9 v; T(command "layer" "n" 3 "c" 3 3 "1" "center2" 3 "")
(command "layer" "n" 4 "c" 4 4 "1" "divide2" 4 "")
)

[ 本帖最后由 jianjian88 于 2008-5-31 18:19 编辑 ]

bearxt

好复杂，没看懂啊！不好意思

mitenickevin

(setq p5 (polar pc1 (/ (* pi 5) 6 (/ a 4)))    这个错误了，少了个“）”
正确的应该是
/ k9 G  T7 z8 H, _+ c. Y' [(setq p5 (polar pc1 (/ (* pi 5) 6） (/ a 4)))

jianjian88

谢谢你能看完我的程序，指出我的错误。可是依然列表有缺陷。为什么呢？
请问Autolisp有没有查找错误的方法？谢！