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发表于 2008-9-28 12:50:59
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来自： 中国江苏无锡
(defun c:aaa()
" V; \4 p+ Z0 \7 [- q1 Q: b (setq L1 (getreal "弧L1="))
) E) ]* M p* i (setq L2 (getreal "弦L2="))* a3 M& |" Y# e" y# l
(setq y1 0.)! d2 Q% K- B! p7 E3 h6 A+ s4 B
(setq Ln L2): |8 v0 H/ ?$ Q! Q, {3 T+ `
(setq jd (/ (sqrt (+(*(/ L1 3)(/ L1 3))(*(/ L2 3)(/ L2 3)))) 10))) i8 W1 T* S ^ r
(while (> L1 Ln)2 n8 }5 f+ Y* j" O8 _( O
(setq y1 (+ y1 jd))
! v2 c# x+ _- i8 T K (command "arc" (list 0 0) (list (/ L2 2.) y1) (list L2 0))
; W+ Y1 X6 c& h) }# z (command "lengthen" (entlast) "")% d$ |: ]. h5 c6 k- M! G
(setq Ln (getvar "perimeter")) 8 @: j; |, \; \0 x( k/ H! Q
(command "ERASE" (entlast) "")3 y( t$ k8 G2 h8 R( d( c6 M
)# H4 P2 M2 V6 o, K9 b c1 b
;;;------------------" r9 C( j) Y5 a7 f- T( t" i, P( L
(setq Ln L2)
! u* f, X- k) i1 k5 _/ p (setq y1 (- y1 jd))+ _2 ^; C: v' a7 Y- g; r
(setq jd (/ jd 10))- v; v' x7 b" \. r+ }4 X3 L
(while (> L1 Ln)
7 t+ ]8 Y! {. ]) ~7 ~; m (setq y1 (+ y1 jd)): I. ~; k5 x. Y( P3 x8 q4 w, d
(command "arc" (list 0 0) (list (/ L2 2.) y1) (list L2 0)): `; Z6 w! i s" c3 K
(command "lengthen" (entlast) ""). N& t% O# u% Y0 t. ^/ b
(setq ln (getvar "perimeter"))
- D8 Q! _0 u, g8 u( w5 z+ Z, f1 K (command "ERASE" (entlast) "")
: N$ R/ m U8 N6 B# _ )
/ j$ U- N' ?& S;;;------------------5 p0 K- G1 z- }4 {& l9 U5 B
(setq Ln L2)2 y; n% v" H7 |# @7 y! o) j
(setq y1 (- y1 jd))6 w. o; U7 a, Q: ?% Q5 C3 d! @, g
(setq jd (/ jd 10))! ?$ _% W8 C8 I( o5 O" e K3 h3 ?% A
(while (> L1 Ln)
2 j$ E! h t3 p% | (setq y1 (+ y1 jd))
, j/ W! M4 H9 z; K (command "arc" (list 0 0) (list (/ L2 2.) y1) (list L2 0))# H( L2 q0 G/ }& I1 @! c
(command "lengthen" (entlast) "")+ G6 f$ m3 }) q
(setq ln (getvar "perimeter"))$ x% w, j! ]: p4 `4 `2 j, G
(command "ERASE" (entlast) "")
0 v) j, V9 \4 k6 y )
: L, Q- H; l/ j' q/ L;;;------------------. t1 Z0 d, c) W' B
(setq Ln L2)
8 p: d7 S/ r1 ] (setq y1 (- y1 jd))
) |4 `4 b# H/ n/ a. k& I2 y (setq jd (/ jd 10))( ^4 o, V! L' J/ [- ]
(while (> L1 Ln)+ y3 r( V- h9 V" D: n' x
(setq y1 (+ y1 jd))* ]" R# n% [1 U, P; }, F1 y
(command "arc" (list 0 0) (list (/ L2 2.) y1) (list L2 0)). ^- w, s: V- k- j7 L+ ^3 k
(command "lengthen" (entlast) "")
% E$ E2 F* M% @8 c7 t" j+ T- k; B (setq ln (getvar "perimeter"))# M( u L! S3 J2 o m% j* d
(command "ERASE" (entlast) "")- u: y, a7 |1 c" Z& H; {
)( o7 m& Q7 e' y, y; u2 a
;;;------------------
. A9 ], M6 y4 E' T2 y1 O (setq Ln L2)
5 S/ m3 z4 _# B3 N# m9 E (setq y1 (- y1 jd))
" N3 X) B; l9 m- u (setq jd (/ jd 10))
, p- b# U" r( \/ [ (while (> L1 Ln); Y }& g- [2 \; J1 d4 U# Y8 f
(setq y1 (+ y1 jd))
x5 l1 Q- f# S (command "arc" (list 0 0) (list (/ L2 2.) y1) (list L2 0))
+ b) d. ?/ u9 ^7 q (command "lengthen" (entlast) "")
( f* p1 _+ p5 H (setq ln (getvar "perimeter"))
7 b: a, Z- i7 B0 P6 }& c (command "ERASE" (entlast) ""); O+ i; ~$ U; y; Z4 V% q! p
)5 i- F) b) V0 T4 s4 o
;;;------------------
3 A7 j" t# w' g& Z5 ^; R+ ]: F' \ (setq Ln L2); }' h: A1 G$ c$ q
(setq y1 (- y1 jd))4 n# p' s) G; Z) B3 @) i3 |
(setq jd (/ jd 10))' b! ~1 c5 A4 N% s, l. h# z
(while (> L1 Ln)
3 w# o6 I" K1 U8 J) \3 b (setq y1 (+ y1 jd))4 W5 a7 W2 V: K7 u6 ?
(command "arc" (list 0 0) (list (/ L2 2.) y1) (list L2 0)): q2 ` D- o# `1 k1 [* `" L2 K
(command "lengthen" (entlast) "")* X6 F6 W7 c3 s4 N) X" ]" u4 ?2 \
(setq ln (getvar "perimeter"))) ]; s! O" `! W, O( c! @. q! x4 a' N( w
(command "ERASE" (entlast) "")
1 l/ e3 D s; I |! q" } )
; _+ ~. P7 D2 d3 N f! `, n3 g;;;------------------+ T! ~8 S5 A' O! ]
(setq Ln L2)" Q2 F. d' ~+ y7 y
(setq y1 (- y1 jd))
9 j, [9 j: i/ H- c9 @2 t (setq jd (/ jd 10))
' S- K! f3 Q% W9 @+ E! _0 I$ q (while (> L1 Ln)
" \+ _, e5 v' f. V2 G6 y (setq y1 (+ y1 jd))
6 ?1 v8 ]5 _2 @/ O# B) f! Y) r (command "arc" (list 0 0) (list (/ L2 2.) y1) (list L2 0))
& u- k5 ]" M- G3 [* X1 x& e4 K) O (command "lengthen" (entlast) "")
; y6 m* G9 A7 w4 e% x% R (setq ln (getvar "perimeter"))
. C. s# q+ G0 Z( K( ^7 v; D (command "ERASE" (entlast) "")
$ Z/ z% b+ `; U V) R )/ E: R% o- ]7 \. ~) `" P. R
;;;------------------ 7 z- k# {$ ~* w4 r3 a4 T
(setq Ln L2)
1 J6 y2 Z8 h. F (setq y1 (- y1 jd))
" ^! q0 R! W9 f! a9 o- C5 f% N (setq jd (/ jd 10))
$ e- S1 o) q. Y; j: y (while (> L1 Ln)
- s7 L" O: C1 |* ] z (setq y1 (+ y1 jd))
' p$ |& R# U0 b* M* b (command "arc" (list 0 0) (list (/ L2 2.) y1) (list L2 0))3 F/ ~3 @! V4 k& ^* ?
(command "lengthen" (entlast) "")
! C& w p, d$ `4 w, s0 \4 R (setq ln (getvar "perimeter"))/ ?0 E: c* q v( }9 Z7 j" S
(command "ERASE" (entlast) "")
! ^4 h5 Z/ O) S4 e' z5 v ) S; _) R1 D4 G6 ?+ h
6 C2 l" q u2 l- }1 M;;;------------------ 8 n! ~+ P! f4 a( J& B/ R5 j
(setq Ln L2)5 I6 x* m3 p9 d7 s8 ?) Q
(setq y1 (- y1 jd))4 B2 o" W# l+ ]! V2 N
(setq jd (/ jd 10))
+ n! Z/ R4 N" H0 ~& z! z C8 x% x (while (> L1 Ln)
$ H4 u6 k; Z$ n$ j9 @0 W2 g7 F& V% a+ Y (setq y1 (+ y1 jd))* F, J% G- F9 c' j5 Y! _: t* c5 [, O
(command "arc" (list 0 0) (list (/ L2 2.) y1) (list L2 0))5 |, r) W" s! Y
(command "lengthen" (entlast) "")( [. k3 |" c( j
(setq ln (getvar "perimeter"))
7 S5 ?- q$ [- i; l. ~ (command "ERASE" (entlast) "")* O3 j9 N/ K& Q" d" P( h m5 e$ x
)7 ?" p- b0 i+ L; C0 y
9 v8 Z, \) j: B4 ]3 C
;;;------------------7 M$ z& r5 L+ |, j7 Y m& N, i- M, V
(setq Ln L2)
/ ?" G$ F2 C7 o- `1 J9 F (setq y1 (- y1 jd))) g( e0 y A9 A5 x: F2 E
(setq jd (/ jd 10))
$ U! U1 F* p+ \' ?# H (while (> L1 Ln)
) p5 ]/ U( N) @0 U! h (setq y1 (+ y1 jd))% m! p& x, q4 l2 Q1 M1 G- [ {
(command "arc" (list 0 0) (list (/ L2 2.) y1) (list L2 0))
" V1 i5 s7 ~+ y5 w' \3 c2 F (command "lengthen" (entlast) "")
+ u* q& O5 d [1 i5 d4 ] (setq ln (getvar "perimeter"))6 ~8 a2 W/ Z0 l: h% I c8 |5 b
(if (> L1 Ln)% U I* V/ `- e. W
(command "ERASE" (entlast) "")
# |6 I. a/ v9 ] ()" X( x7 X% N# f7 y+ l) @
)) {4 T3 X9 ]0 ^: s6 U1 x5 |
)% e: u, U5 h7 q4 v
& |$ s$ b4 i/ b% f8 h8 a8 L. t1 [0 c) |
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