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？
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 )
/ w* F% H5 C0 R3 v# V(setq d (getreal"\n 输入轴承外径"))
- h5 A' V% W- a4 L3 ]5 K(setq d1 (getreal"\n 输入轴承内径"))
(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
, A9 i# P2 S) O+ _  ~ (setq t2 0.7)
)
6 w7 b( f) w, h1 y(setq a (/ (- d d1) 2.0) )     ;计算三个中间参数值
(setq fx1 (/ pi 2))
5 N5 f3 d5 x2 H0 r# N$ d; s(setq fx2 (/ (* 3 pi) 2))
)
(setq p0 (getpoint"\n 输入图形插入点："))
(setq p1 (polar p0 fx1 (/ d 2.0)))
8 B4 C, T1 V; O3 Y& k; Q' S; H(setq p2 (polar p1 0 b))
(setq pc1 (list (+ (car p0) (/ b 2.0)) (+ (cadr p0) (/ (- d a) 2.0))))
  d; e* N( w9 A! K$ L9 E(setq pc2 (polar pc1 fx2 (- d a)))      
  F. F6 c9 a' L$ g(setq p9 (polar pc1 (/ (* pi 11) 6) (/ a 4)))
0 z& h2 F( c1 q" j. v(setq p8 (polar pc1 (/ (* pi 7) 6) (/ a 4)))
9 Z8 ?* V# r( T(setq p4 (polar pc1 (/ pi 6) (/ a 4)))
* L) k: ]4 @% H+ f/ L(setq p5 (polar pc1 (/ (* pi 5) 6) (/ a 4)))
(setq p3 (list (car p2) (cadr p4)))
(setq p6 (list (car p1) (cadr p5)))
(setq p7 (list (car p1) (cadr p8)))
(setq p10 (list (car p2) (cadr p9)))
7 @, }* K6 h+ V; K. V" s(setq p11 (polar p2 fx2 a))
(setq p12 (polar p1 fx2 a))
* k$ b1 Q* _, `1 W& c5 F# ]8 F(setq p13 (polar p0 fx2 (/ d1 2.0)))
& _- Y5 T+ g+ b(setq p14 (polar p13 0 b))
(setq p15 (polar p2 fx2 (/ d 2.0)))
(setq p16 (polar p15 0 b))

& \3 d0 m  F$ K(nlayer)                                          ;调用层设置函数
% k: V/ x$ `- Z! n, m# b& X$ _(command "zoom" "w" (polar p1 fx1 10) (polar p16 fx2 10))
(command "layer" "s" 1 "")                        ；绘制轴承的上半部分
(command "pline" p1 p2 p3 p4 "")
(command "arc" p4 "ce" pc1 "a" 120)
(command "pline" p5 p6 p1 "")
(command "pline" p6 p7 p8 "")
, i/ j" a6 j/ m0 ](command "arc" p8 "ce" pc1 "a" 120)
' a, g9 v: d( t6 Q1 H6 \(command "pline" p9 p10 p11 p12 p7 "")
; q# R! p; _' [0 W4 R(command "pline" p3 p10 "")
(command "arc" p9 "ce" pc1 p4)
(command "arc" p5 "ce" pc1 p8)
# C" l) B5 E2 v  N& K0 D(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 "")
0 B. O' i2 H/ C3 m6 k(command "pline" p11 p14 "")
" X! T* O  I6 r( l9 T(command "layer" "s" 0 "")
(command "hatch" "ansi31" t1 "0" "w" p1 p3 "")         ；绘制剖面线
(command "hatch" "ansi31" t1 "90" "w" p7 p11 "")
(command "hatch" "ansi31" t1 "90" "w" p13 (polar p16 fx1 (/ a 2)) "")
(command "hatch" "ansi31" t1 "0" "w" p15 (polar p16 fx1 (/ a 2)) "")
(command "layer" "s" 3 "")
(command "pline" (polar p0 pi 2) (polar p0 0 (+ b 2)) "") ；绘制轴承中心线
, U9 M" M, v5 x, G(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)))
         (polar pc1 0 (* 1.2 (/ a 4.0))) "")
" A) q: K- |* H% K1 ]- Y" S8 R(command "pline" (polar pc2 fx1 (* 1.2 (/ a 4.0)))
8 T2 k- V: V, i- h0 a4 E         (polar pc2 fx2 (* 1.2 (/ a 4.0))) "")
9 Y0 O( G! Z9 D: q) C(command "pline" (polar pc1 pi (* 1.2 (/ a 4.0)))
         (polar pc2 0 (* 1.2 (/ a 4.0))) "")
1 f2 G3 F+ j! \6 @& |- @# }(command "zoom" "a")
(command "regen")
8 N! V: B* j$ j% c! S0 M# w)
(defun nlayer ()
" _; ~$ V, D( }(command "layer" "n" 1 "c" 1 1 "1" "continuous" 1 "")
! c/ f& {5 K8 e! d+ Y8 M% W9 ]' t(command "layer" "n" 2 "c" 2 2 "1" "dashed" 2 "")
(command "layer" "n" 3 "c" 3 3 "1" "center2" 3 "")
6 ?% N: z' H0 j  C1 ^& r' S; W5 ^0 ^(command "layer" "n" 4 "c" 4 4 "1" "divide2" 4 "")
)
# I2 V+ y, @5 s6 Y& X
7 ^- C2 q* D" X' m( R1 Q[ 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“）”
' `; W9 P& [! f+ @3 A4 v正确的应该是
(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？
7 g# O+ w0 a0 O' I* B1 t请问Autolisp有没有查找错误的方法？谢！