|
|
分析以下三段AUTOLISP程序，写出每个语句起什么作用？最后该程序完成什么功能？. ?1 E/ Y* E. h6 \; f* E, Z
①6 t) }+ y) m. Y5 B$ ^
(defun c:erasescr( / l u)
) c# \/ h& F+ v$ ~(graphscr)
# Q& Q% P$ Z0 E/ Y6 e(setq l (getvar "limmin"))1 ^. |; |$ T( j: S' S9 U
(setq u (getvar "limmax"))
+ \- w, I8 n; y q, |(command "erase" "W" l u “”)
7 t8 x2 [% K6 H) 8 u5 g/ g" Q3 ?2 Q- L
②; L/ ]7 [! ?5 ~2 N
(defun p3 ( )
' {3 D- X1 `$ y5 W3 h(setq r (getreal “\n number:”))4 T; J$ M# l( W! X5 W
(setq maxr r minr r). X, A% N. s5 U- [6 b& ?. h
(while r+ o R: Y0 K, F5 M
(if (> r maxr) (setq maxr r))
5 I4 U8 x* k% q! y* P9 e(if (< r minr) (setq minr r)): f+ t, w* D1 S& `5 l$ y o
(setq r (getreal “\n number<return when done>:” )), z% k5 ]" A* x) K$ J
))
" y; O' ?" u7 K7 [+ U- Z: d③
1 B1 s8 H; J4 M; E0 A; B9 n" P(defun c:akey (/ d h w bp ag p1 p2)
- [ P8 Z2 e6 J) \( P) T. X(setq d (/ (getdist “\n d＝?”) 2.0)
! Y( X! {% V) j2 b! P3 n& C6 k h (getdist “\n h＝?”); @: X3 o& m- m
w (/ (getdist “\n w＝?”) 2.0)
X) E! ^" I- w bp (getpoint “\n center＝?”)7 F. C- D/ E. I
ag (atan (/ w ( sqrt (－ (* d d) (* w w))))))
: C! U$ K+ ^0 _' r0 e7 b ?/ {(command “pline”1 }4 S" X/ r3 @ M: g' t
(setq p1 (polar bp (－ ag) d))* O: \6 R' x8 _# z. z) n& y: i1 B
(setq p2 (list (＋ (car bp) (－ d h)) (cadr p1)))
* ?/ ^. l0 W( N0 R/ F8 W f(polar p2 (/ pi 2.0) (* w 2))
* v" m) s! }- }$ j* v(polar bp ag d)* P# E6 l& X% H \" Y0 Z
“a” “ce” bp p1 “”)0 s8 q8 k' |: _
(setq ss (entlast))
: \; B; W7 t; Y(command “hatch” “u” 45 10 “” ss “”)
8 W$ Y# W3 p$ }! n" [: s ) |
|
发表于 2007-12-28 14:06