+ d; O, [. m6 `. A; |这是教程里的一道题2 d' k9 @, F/ {# C
(defun c:lt()# m+ B7 i$ c3 q7 D# T3 r0 _" u' i
(setvar "cmdecho" 0)8 J, ~" _6 h6 ]# J/ d
(setq p1 (getpoint "\n插入点"))
+ |3 o: U$ V, x! r* N) ]8 T5 y(setq w (getreal "\n梯宽")): M1 i; ^2 I: w$ ^
(setq h (getreal "\n梯高"))
2 a6 N( t8 L% {. P; Y/ ?(setq n (getint "\n级数"))5 [% r5 j8 s( h& v* i5 w- L3 H6 b
(setq p2 (polar p1 0 w))2 C; V9 Z7 }( v1 h
(setq p3 (polar p2 (/ pi 2) h))* m- ]1 ?& t9 u( n+ Y/ ?
: v# g. Z9 l! j% y( I
(command "line" p1 p2 p3 "")$ [5 d p+ t2 `4 U* v6 e
+ l+ \! r) X5 ~4 g. P
(setq w1 (/ w n))
1 R& b0 F( F* O* e0 P% E- r2 B* K(setq h1 (/ h n))
5 u3 l |( \9 @(setq pa p1)
0 t5 [2 o, J8 z" f. v(repeat n
# w, R' x& C8 }! s ~( G8 Z' S" X' p(setq pb (polar pa (/ pi 2) h1))
7 Z! O- F" k, X9 o& \& Y(setq pc (polar pb 0 w1))" f! r! m& r) g2 i
(command "line" pa pb pc "")" `) E) a6 q. j& D! M3 a
(setq pa pc)
% {# X$ Z. o! v6 ^, b$ m# F" ?(prin1)))
% |& T3 ~8 M( x2 O# J+ K4 Q(prompt "\n命令：lt")
+ y! d2 x0 a0 O
+ V6 ]: e. Y7 P9 P# F6 Z" ?% U[ 本帖最后由 leimc 于 2007-12-19 16:55 编辑 ] |
发表于 2007-12-19 16:39
发表于 2007-12-19 16:44
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