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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()
8 r: R! P o5 z' B s! W; Z (setq L1 (getreal "弧L1=")). F& x6 H7 F: t
(setq L2 (getreal "弦L2=")). y5 U2 Y1 d5 v, ~/ _& c# J
(setq y1 0.)
" y" |5 w. a0 @" B1 [4 Z (setq Ln L2)+ K) ?8 J' O* ?
(setq jd (/ (sqrt (+(*(/ L1 3)(/ L1 3))(*(/ L2 3)(/ L2 3)))) 10))
* u8 X# W$ U+ b' Z- v (while (> L1 Ln). }* C r, P' J, `9 u! m
(setq y1 (+ y1 jd))
# P$ i; [; l$ g/ |/ Z @( D- H+ { (command "arc" (list 0 0) (list (/ L2 2.) y1) (list L2 0))
5 Z5 v7 D: D8 e- _' j6 f (command "lengthen" (entlast) "")
* I& V4 G9 u6 P$ {2 K (setq Ln (getvar "perimeter"))
! c) N& ]; ]7 o, n% f/ a (command "ERASE" (entlast) "")
4 b* c! Z1 s* `3 d9 O9 U )
& @. t/ B* B8 r2 c8 f c/ F! P;;;------------------$ g5 C, V- B* W$ S9 N
(setq Ln L2)9 Y0 {/ u# U7 p, Y# Y) {' T& @" w
(setq y1 (- y1 jd))/ e7 N; A6 q, Q9 F, t
(setq jd (/ jd 10))
% Q' ^' k2 q& S- b: ` (while (> L1 Ln). E' E9 D1 S2 U0 H, m6 C6 N9 R
(setq y1 (+ y1 jd))# |2 d' w& |# ?- O
(command "arc" (list 0 0) (list (/ L2 2.) y1) (list L2 0))
1 f7 r3 ^; V% h (command "lengthen" (entlast) "")
* I: l# k: l0 p9 s: O# A (setq ln (getvar "perimeter"))
0 Z- q$ | Z2 j4 P( k1 b (command "ERASE" (entlast) "")
. o: [/ h, I' R3 `" b+ i0 M )+ I. I, K- _8 A3 g
;;;------------------* q" E/ y/ m G
(setq Ln L2)
6 ~6 F5 {0 C h (setq y1 (- y1 jd))8 O& \8 {$ [0 A3 L4 I9 n) _
(setq jd (/ jd 10))3 U Q$ d# V! B" |6 {; T5 z
(while (> L1 Ln)
, Z0 F# s+ T1 S/ l* y (setq y1 (+ y1 jd))( F7 E' V ~, c; s) E
(command "arc" (list 0 0) (list (/ L2 2.) y1) (list L2 0))3 n! e5 P; n# F& t; m
(command "lengthen" (entlast) ""); A5 `/ |- O* F* V1 e
(setq ln (getvar "perimeter"))/ T1 A, X* H: m/ T
(command "ERASE" (entlast) "")% _% o. ]4 q9 b4 Q$ s4 `! g0 ]# x
) i5 ^4 |( i/ X& v: D- `
;;;------------------
7 q& A: i- h6 v% j (setq Ln L2)
8 E! z/ a* v' n/ I (setq y1 (- y1 jd))
, n6 u5 Z- M5 S |. V. m( a (setq jd (/ jd 10))
! M _$ M. _( {+ [ (while (> L1 Ln)- l8 v4 C. `$ k o
(setq y1 (+ y1 jd))
6 U$ q# K: t* [+ p' | (command "arc" (list 0 0) (list (/ L2 2.) y1) (list L2 0))8 F% F' t- H$ h) A5 o0 N
(command "lengthen" (entlast) "")5 ^0 s+ n4 O# o2 C- ^
(setq ln (getvar "perimeter"))& Y, G9 d1 S9 a, I( O" ^
(command "ERASE" (entlast) "")6 R& c3 e) U2 `' Z% L
)
6 C- a. m9 u. k' n: ~6 W;;;------------------
) i1 s. ^) m5 {6 V- V- U# P( c* `. W (setq Ln L2)
( D* Q# _4 {- i2 l (setq y1 (- y1 jd))" J' b+ j: ^- n9 A
(setq jd (/ jd 10))% E i7 B4 J$ S% c5 N# T$ k- j
(while (> L1 Ln)# ^, r% ?4 j3 S3 A# W* Z& h3 l" T
(setq y1 (+ y1 jd))7 A y. U) y$ E, W
(command "arc" (list 0 0) (list (/ L2 2.) y1) (list L2 0))
+ \! w' L* E" Q (command "lengthen" (entlast) "")
1 U% ]. p/ v1 `: C8 X (setq ln (getvar "perimeter"))) `5 Q+ _+ b+ B Y8 A6 E
(command "ERASE" (entlast) "")
9 M+ i( p& R9 X% j' ?6 M4 E) u )* M$ A7 L+ u m; a6 {+ L/ R' c$ F
;;;------------------
! G( r1 o: D# J (setq Ln L2)7 W) B, r( y6 }
(setq y1 (- y1 jd))
' s3 [# \$ C. c5 p (setq jd (/ jd 10))
; Z6 j. M& Z8 Q( T (while (> L1 Ln)+ U* ~9 ?# c' m: a3 ?
(setq y1 (+ y1 jd))6 M) d: t4 ?" v& r( J5 j
(command "arc" (list 0 0) (list (/ L2 2.) y1) (list L2 0))- q- e3 ]* q# O6 b
(command "lengthen" (entlast) "")
! S* t( U: R0 Y% ]8 y: |. t (setq ln (getvar "perimeter"))* t( X j' |- g$ c! f% A
(command "ERASE" (entlast) "") G9 N2 o, w5 I. `
)& Z o0 `: Z/ q5 D6 [
;;;------------------
' W( E/ K$ H- d6 e# B (setq Ln L2). l1 r) Y2 r4 w- H$ d6 t' y
(setq y1 (- y1 jd))
" x0 V8 G3 X- _3 N. c( B' A (setq jd (/ jd 10))
% Z, j) g1 P8 Z4 ` (while (> L1 Ln)0 M$ X& y) Z- Q9 W; ]& ]8 Q
(setq y1 (+ y1 jd))* w1 q( ?% V3 L) s( ]
(command "arc" (list 0 0) (list (/ L2 2.) y1) (list L2 0))
3 Z4 p, ]# {; J$ F/ N6 | (command "lengthen" (entlast) "")1 v. ~' m! ]! l- i. {
(setq ln (getvar "perimeter"))
( N" t; I0 i" ^6 e (command "ERASE" (entlast) "")
1 O) k% p% f, H; j/ @" q" } )( X5 }( F2 A1 E" P& s2 g
;;;------------------ 6 b- t+ k+ ^1 f' X7 m" u% P- J
(setq Ln L2)+ W! ? H& D/ J6 z4 C: V) w
(setq y1 (- y1 jd))
! i+ I5 }9 g0 m; F (setq jd (/ jd 10))/ e) o+ I2 \; Y8 q# x3 W9 y8 j( e
(while (> L1 Ln)
; A7 U: j9 s( N5 F6 W (setq y1 (+ y1 jd)), b% s* Q" b3 Y* ]$ n
(command "arc" (list 0 0) (list (/ L2 2.) y1) (list L2 0))
! y c! P/ B' u3 n" Q1 Q (command "lengthen" (entlast) "")) D% D6 @* {) i/ K8 p S' U+ ]6 t: ?
(setq ln (getvar "perimeter"))
: ^$ y9 }/ @( e8 Z (command "ERASE" (entlast) "")* W4 ? x& R3 t/ Q- h; P+ F" Z) K
)8 y6 _" I4 N' H! w) W
* N0 D; o: `1 F; T;;;------------------
0 f* n7 ~( S) y3 Z2 H7 [; M (setq Ln L2)
& N6 m T" w, J1 h/ d (setq y1 (- y1 jd))7 ]3 J# C$ d" \' I( O$ I' W; U
(setq jd (/ jd 10))
G- p/ Z0 U3 F1 O8 J6 p) q- H (while (> L1 Ln)
& n2 d$ L! B, V (setq y1 (+ y1 jd))
0 Y' Y0 k a# G (command "arc" (list 0 0) (list (/ L2 2.) y1) (list L2 0))9 ]% r' k* B' |9 ?$ t- e
(command "lengthen" (entlast) "")
8 f: W0 T2 X) G7 i- g, j1 K (setq ln (getvar "perimeter")), I0 }, O7 ]. t
(command "ERASE" (entlast) "")
) x, @2 N8 ~; c! u )
D/ M' g# f& X* ]+ l( z- e6 Q4 ]! t8 `+ e4 t) Y9 M/ n
;;;------------------
+ P+ Z8 P+ s y3 w(setq Ln L2)4 P+ ]5 w* a1 o2 A0 v
(setq y1 (- y1 jd)) y7 Q3 A1 O% i5 d' `) ~ f
(setq jd (/ jd 10))
2 ^4 [* S1 r; j5 o$ \ (while (> L1 Ln)! {) o5 N6 w: k, r7 b
(setq y1 (+ y1 jd))
0 v3 L( w' D4 V6 | O0 S2 x7 `1 u/ \+ w (command "arc" (list 0 0) (list (/ L2 2.) y1) (list L2 0))! p3 ~5 M8 p @$ v
(command "lengthen" (entlast) "")+ t1 R9 Z0 K, U Z; e" {3 _
(setq ln (getvar "perimeter"))7 ]1 s7 E8 S6 ^# v
(if (> L1 Ln)
* \8 K6 U( q+ L: x& @ (command "ERASE" (entlast) "")
) ^& D# Y4 o* ^7 L- d8 B& M% t ()0 Q: e" ^% @+ x. s9 R
); ^ ]! \* e5 T
)
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