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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()( \1 O3 ]7 z4 \( y
(setq L1 (getreal "弧L1="))# l$ O! W6 s' g2 @+ Y6 M$ R
(setq L2 (getreal "弦L2="))
, H3 ^; B7 n" r* u, _) Y/ O$ Y9 A (setq y1 0.)( O$ N6 d/ {9 U7 ]8 N3 e: @0 H
(setq Ln L2)2 x# q- p) G( t' J! ]
(setq jd (/ (sqrt (+(*(/ L1 3)(/ L1 3))(*(/ L2 3)(/ L2 3)))) 10))
: G% G' R' v2 E g: x (while (> L1 Ln)
1 G( P/ a" S3 Q9 o' f# q. E& V/ Y (setq y1 (+ y1 jd))
: D3 Z3 t( U0 N& B# H3 S, U/ R (command "arc" (list 0 0) (list (/ L2 2.) y1) (list L2 0))( k# j# A: S2 j
(command "lengthen" (entlast) "")
9 ^+ L2 w4 T X, M (setq Ln (getvar "perimeter"))
n% P& M1 ?4 F4 {: P5 @8 ? (command "ERASE" (entlast) "")
8 ^2 V1 Q) y* }3 ]3 B# v )
% n7 m5 J' c& N, Q5 u- e7 G;;;------------------
; ~" ], r1 r2 C8 l) f' C9 k (setq Ln L2). u7 h( H! v( J8 i' v. [# S6 z
(setq y1 (- y1 jd))6 M! G) X4 z6 y6 |
(setq jd (/ jd 10))1 N5 G! |' e' Y# E$ X3 Z; \7 a
(while (> L1 Ln)) G& ^" s$ g; Y
(setq y1 (+ y1 jd)). C- P- J2 \: X1 F, q
(command "arc" (list 0 0) (list (/ L2 2.) y1) (list L2 0))
9 K( A/ ~8 ^/ z k& H3 _( O (command "lengthen" (entlast) "")
; X K$ c" s2 B8 _ (setq ln (getvar "perimeter"))
$ ^. C9 j& ?1 i1 L% U (command "ERASE" (entlast) "")6 L- W4 X6 t6 M0 h# ~; a7 K! \
)3 ~- ]3 H% Z J
;;;------------------
& D" A! U0 E, r (setq Ln L2)
0 s1 F. t. ?0 u% r (setq y1 (- y1 jd))' ^3 }4 z. T0 W5 \
(setq jd (/ jd 10))6 Q% e) j" ^$ S4 A+ X
(while (> L1 Ln)( R3 c' g A1 x* c# H; R2 g: Z
(setq y1 (+ y1 jd))" X* M, n; X# b3 s, n3 {
(command "arc" (list 0 0) (list (/ L2 2.) y1) (list L2 0))
4 k+ _6 c/ b+ ], I; P (command "lengthen" (entlast) "") q/ L. j2 e5 ~0 n1 v( w
(setq ln (getvar "perimeter"))4 ?6 C# z! Y" M
(command "ERASE" (entlast) "")( j6 p6 K# c) Q; f/ e( F
)
1 ?4 o3 ~3 i( g1 \! y4 S;;;------------------
- S' i0 Q' A) m0 w" R* u (setq Ln L2)$ b. J+ j, B, ^ k" U; \9 x
(setq y1 (- y1 jd))
9 x6 H4 F$ e2 X6 g/ F, N5 s* A (setq jd (/ jd 10))
$ m b) @' e: W4 U- l, o7 L$ T2 j (while (> L1 Ln)0 [% ]/ N h& S
(setq y1 (+ y1 jd))
6 Z# b$ E/ F2 \& a (command "arc" (list 0 0) (list (/ L2 2.) y1) (list L2 0))0 B# Z: C- ~( K; p% Q3 Q
(command "lengthen" (entlast) "")
8 r8 b* J% h$ R- J (setq ln (getvar "perimeter"))
/ t4 W0 Z! V' R6 d5 X7 Y/ C7 I* a: r( P (command "ERASE" (entlast) ""); c0 p* r" c0 i3 ]! F) \9 x2 s. ?
)
& a! J. x8 c: E% h6 y;;;------------------
: e7 K I& A2 Q% G& p3 A- D) R/ U (setq Ln L2)' s0 l9 i1 K* h; X7 H% A
(setq y1 (- y1 jd))
6 u1 F: f) q$ i' M3 G" P v (setq jd (/ jd 10))7 U* k& v" w4 P1 S; g( s
(while (> L1 Ln)' e" _# i. S f l
(setq y1 (+ y1 jd)): h, r5 V* A) e% |1 T
(command "arc" (list 0 0) (list (/ L2 2.) y1) (list L2 0))+ [% a5 ~, J1 Y4 Q- t1 ?! G
(command "lengthen" (entlast) "")- Y3 F& r. _' v, S
(setq ln (getvar "perimeter"))
( x2 `. v, Y3 s- g9 R6 L$ p# a1 [ (command "ERASE" (entlast) ""), r# ~/ R+ E/ y) p- I8 V: z
)
" X) p. E, s; i8 A w;;;------------------7 E8 s" w- U! o9 m/ N. ?0 e
(setq Ln L2) `! T0 ? @$ a) I' M
(setq y1 (- y1 jd)): H' d4 N* H" k% b4 W
(setq jd (/ jd 10))( e$ K8 \: q5 u
(while (> L1 Ln)
4 {+ s1 f/ K' @3 w (setq y1 (+ y1 jd))
7 s+ p1 \) G' C* y9 p: Y; h (command "arc" (list 0 0) (list (/ L2 2.) y1) (list L2 0))0 d1 D5 g5 |! O8 x) q; M
(command "lengthen" (entlast) "")
5 v1 X6 O9 @; Q( _% X$ I (setq ln (getvar "perimeter"))% M2 k8 s% U0 ?
(command "ERASE" (entlast) "")
1 F4 a# u! N! _; P) q )
. }; q4 f1 m1 W' C/ d! [/ W! j6 C% M;;;------------------
0 ^" u* c9 P% W8 c0 f (setq Ln L2) C* p' U" N) s) \4 H$ G* {
(setq y1 (- y1 jd))1 u3 `' Q1 F& A
(setq jd (/ jd 10))
* V/ ?. v4 e( `0 Q: o8 | (while (> L1 Ln)
1 F& v, X- i% V3 p7 {) y (setq y1 (+ y1 jd))
5 k! y( z2 [% G; \0 @: r; @& { (command "arc" (list 0 0) (list (/ L2 2.) y1) (list L2 0))/ `! n6 f5 v8 {* M; C
(command "lengthen" (entlast) "")( L1 h; v- n1 Y+ I2 g3 _
(setq ln (getvar "perimeter"))# ~/ w: c0 b6 R7 d5 F1 r
(command "ERASE" (entlast) "")$ {0 I9 N( b; I q) }
): E: C* z/ I, h9 P# o
;;;------------------
1 a. l* q% g8 `) ? (setq Ln L2)% I1 z4 T) @1 z$ k0 a5 p
(setq y1 (- y1 jd))( G( m+ B+ R8 W# p3 J6 ^
(setq jd (/ jd 10))
4 m: x5 w' C* J (while (> L1 Ln)- h! u8 D! T4 ]8 R" q7 I: C* x
(setq y1 (+ y1 jd))5 m$ J1 K$ F' N4 L
(command "arc" (list 0 0) (list (/ L2 2.) y1) (list L2 0))
! T5 `5 D7 H7 v5 ?, k (command "lengthen" (entlast) "")' l0 d1 M( N: u; T8 {. j* Y: a& n2 l
(setq ln (getvar "perimeter"))
3 D; Z, ?4 f3 E/ x( w, ^ (command "ERASE" (entlast) "")
0 B# S& {" A7 W+ x3 p3 M )
6 f- ~- o1 V/ W: `4 k9 Y
1 ~# M3 f! A8 k# r4 T" p+ t9 E;;;------------------ - y; a- a' U9 f9 b9 _8 T8 R" r) n
(setq Ln L2)
; K& y( R0 ]0 P2 t" N7 Y4 }7 O% Y) { (setq y1 (- y1 jd))4 O4 T. y! }+ Y1 u! g& l0 o
(setq jd (/ jd 10))
1 J- i# a+ _+ `$ m (while (> L1 Ln)
" W u; i/ i8 C (setq y1 (+ y1 jd))
2 b( l0 y8 F0 c+ U: o: k (command "arc" (list 0 0) (list (/ L2 2.) y1) (list L2 0))
+ b" k0 v: X7 Y% G4 o (command "lengthen" (entlast) "")
# O8 N, v+ u; O- h+ P" j (setq ln (getvar "perimeter"))
' Z' W, x, J: X- _& e8 N0 k' G (command "ERASE" (entlast) ""). h8 T2 \7 V( V. a
)4 G* w3 j& P0 I! W( Z5 u$ W& ?
8 [% O+ X6 g' }. g4 _;;;------------------' J$ E$ T/ [& Y. z6 u
(setq Ln L2)2 O& t7 `( d3 Y4 f$ b
(setq y1 (- y1 jd))
( h. r& J B- [9 Q! Q, d% n (setq jd (/ jd 10))
, h) f% D- r8 u0 A. E6 i (while (> L1 Ln)
4 H) B! k) L% ]! V (setq y1 (+ y1 jd))
7 X4 D o# }* O: z5 U+ m" O: ] (command "arc" (list 0 0) (list (/ L2 2.) y1) (list L2 0))
0 [0 u6 }8 d0 Q (command "lengthen" (entlast) "")
! ^- D# O+ S* c. W& m (setq ln (getvar "perimeter"))' c& D* R, m- j! S0 t( \
(if (> L1 Ln)
( N. L1 M% F: s, i5 X! } (command "ERASE" (entlast) "")
7 o4 Z% a- H: m. P (): ~) Z# @$ |; H+ C1 A
)# L1 f- l3 u+ `% r* J' Z* a4 R
)1 `6 W+ T% V# C" ` w+ C
% `4 r/ f; ^! ]. H$ M5 v
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