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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()
. k) z* J$ f, y: ?2 r+ z2 D (setq L1 (getreal "弧L1="))# @- ?4 k) n' X0 @( Z6 ?
(setq L2 (getreal "弦L2="))( G- u" w4 [8 r0 q7 u3 V! y, f6 |
(setq y1 0.)$ K$ Z% v4 L* i- l- K
(setq Ln L2) O u4 A% N6 Y1 k% d4 G/ l
(setq jd (/ (sqrt (+(*(/ L1 3)(/ L1 3))(*(/ L2 3)(/ L2 3)))) 10))
$ v: z y$ ~; P9 Y/ K3 ?5 F. ^+ [ (while (> L1 Ln)2 }% y2 x. N) ^+ P2 r4 |4 H- I
(setq y1 (+ y1 jd))0 C0 }- i4 u6 p2 f1 Q/ [5 `
(command "arc" (list 0 0) (list (/ L2 2.) y1) (list L2 0))
/ E# {3 q6 Q# T0 F% I0 U* ? (command "lengthen" (entlast) ""). ^/ ^/ ~4 g- u0 I
(setq Ln (getvar "perimeter"))
% c$ S/ L- L! P# X, [6 e (command "ERASE" (entlast) "")
) q2 L8 ^/ S0 o: @5 e0 P )
- r) d6 }8 @% d7 T9 y1 L5 g;;;------------------4 S, C6 h* f1 |+ V& M
(setq Ln L2)* w3 l0 d8 M Q. \# }! |
(setq y1 (- y1 jd))6 w- f0 F0 U S, l4 }
(setq jd (/ jd 10)); e: x3 Y; [! a) t
(while (> L1 Ln)! s% E1 Q* s+ k; K+ X5 `3 E5 c; X
(setq y1 (+ y1 jd))* q$ l5 b: M9 f; R
(command "arc" (list 0 0) (list (/ L2 2.) y1) (list L2 0))
9 n3 n% p; R3 D) O (command "lengthen" (entlast) "")
% e H: N* h( P (setq ln (getvar "perimeter"))4 w7 x- Q6 \( a
(command "ERASE" (entlast) "")
5 |; k7 L R z) B+ @ )
1 D9 M& U. o0 |+ U. y6 `. U- t- i;;;------------------* @$ z/ w) [8 S" Y# H" K8 I& n2 w. T
(setq Ln L2)
h+ P2 @! _; I, J1 G (setq y1 (- y1 jd))
2 V( i+ M. m0 |! D- \5 R (setq jd (/ jd 10))
4 T( ^9 R; w7 |- i" w$ Z" F& @& Y (while (> L1 Ln)
; S1 C2 k* O( S (setq y1 (+ y1 jd))
) X' \5 V4 r( @ X: O2 C- L& y (command "arc" (list 0 0) (list (/ L2 2.) y1) (list L2 0))* k: H+ B. C" V' x5 \& C
(command "lengthen" (entlast) ""); `, |, D% ?+ h6 h0 @0 U
(setq ln (getvar "perimeter"))
- X& C: B3 l7 y: T6 Q1 D1 R (command "ERASE" (entlast) "")$ ^! b+ Z. {9 R( e: c" }" H" K
) W5 r8 [+ g0 w5 f2 r
;;;------------------
' U) C' e) ~. r0 L+ s (setq Ln L2)1 p# W3 \ Q0 R- f3 D+ N
(setq y1 (- y1 jd))# D+ I/ s( O) `( O4 i1 W2 g
(setq jd (/ jd 10))
% h ]! u, N7 D8 n% t (while (> L1 Ln)5 V( W# N8 `& s; e9 x
(setq y1 (+ y1 jd))
& _' g$ h- T- O3 K9 i, C (command "arc" (list 0 0) (list (/ L2 2.) y1) (list L2 0)): y$ p% F5 M( q6 o8 _& F
(command "lengthen" (entlast) "")& t0 ?! l& m, J
(setq ln (getvar "perimeter"))5 @2 z5 W4 d" t' ]4 h' u
(command "ERASE" (entlast) "")
* Z: N# o! W5 F& S2 W )! B$ m* }! W; @
;;;------------------$ W9 M7 T& C0 \' j
(setq Ln L2)
" C% y( i5 M6 I# d1 L9 X (setq y1 (- y1 jd))
$ E0 M( J4 ?6 S9 x+ `1 k (setq jd (/ jd 10))
7 p+ C( ?5 d. h. T (while (> L1 Ln)
2 @+ _: p& O8 [. J! _( Y# J (setq y1 (+ y1 jd))+ Y& I: N/ w/ L
(command "arc" (list 0 0) (list (/ L2 2.) y1) (list L2 0))
F$ p; R, ~2 J1 `) @/ ~% X0 U: r5 x (command "lengthen" (entlast) ""), `1 M( t4 J5 M$ }9 E3 r
(setq ln (getvar "perimeter"))" k0 K6 O" o: N
(command "ERASE" (entlast) "")
. ^! a; \0 g2 R. i) x7 s )1 A. |$ a7 f$ f |9 G, G) _. }4 Y
;;;------------------
$ Y! E' a; R, x1 d (setq Ln L2)( Z5 h1 S- d7 ~. J
(setq y1 (- y1 jd))4 w( p! V8 j/ }. V
(setq jd (/ jd 10))# q% X, f: N# U! j I, F/ T
(while (> L1 Ln)$ \3 h7 _0 c: h
(setq y1 (+ y1 jd))
* c# ?5 M$ w* e( o! L7 ~* W8 R+ [ (command "arc" (list 0 0) (list (/ L2 2.) y1) (list L2 0))5 C& E3 F: j; W4 S
(command "lengthen" (entlast) "")6 q Q/ m( Y8 X4 s3 V+ [
(setq ln (getvar "perimeter"))9 R8 T5 X, P, `2 X
(command "ERASE" (entlast) "")( } v5 O, f4 a% D
)# K. C1 L8 u; Q# g4 P7 \+ c
;;;------------------8 Y$ K6 P4 a5 m# w6 V# G
(setq Ln L2)2 O# R ^ Y# B. o, F9 u9 d- i8 X
(setq y1 (- y1 jd))
( S& m6 \+ E5 H0 W# o$ B2 J (setq jd (/ jd 10)): X# o4 I# i$ \0 `
(while (> L1 Ln)& m6 \7 Y% g8 Y. e) Y- L
(setq y1 (+ y1 jd))3 o5 c% v( G5 h
(command "arc" (list 0 0) (list (/ L2 2.) y1) (list L2 0))( x0 S' N9 W5 z8 t0 |
(command "lengthen" (entlast) "")
; }( U- d, f% Q! f& i- m (setq ln (getvar "perimeter"))
5 _" N! \. ]0 {2 F0 M0 H (command "ERASE" (entlast) "")
+ U/ ^- `* \4 K2 m4 L )& F6 N' d6 k& K1 D p7 z$ o! ]
;;;------------------ " D7 g& \- Q; v7 ~4 d- U# F( n+ \
(setq Ln L2)1 u0 x% l/ F: f) x
(setq y1 (- y1 jd)); I5 Q5 ~) S# w5 w9 W1 ]: p
(setq jd (/ jd 10)); J- |4 p! W% v# L+ R4 d7 ~
(while (> L1 Ln)) J0 m# O7 C# p t3 t
(setq y1 (+ y1 jd)); q; o. c$ v% E3 l4 T2 I C6 x
(command "arc" (list 0 0) (list (/ L2 2.) y1) (list L2 0))
" _" n- l2 z9 s: l' g3 V; q# V (command "lengthen" (entlast) "")' x, P# Q/ Z& c
(setq ln (getvar "perimeter"))
d+ P) _2 d- v. z! [* P (command "ERASE" (entlast) "")
( o8 U( R6 n) U1 c% d )
9 o+ | u! }3 ? D+ T9 E' v& e* f3 v0 H# X! C8 ^& b
;;;------------------ 3 i( n1 y' q9 n; b/ P
(setq Ln L2)& S& N% D) g! z6 \9 p* U
(setq y1 (- y1 jd))3 E! b+ N+ K+ o
(setq jd (/ jd 10))1 Q& |& b9 {( t
(while (> L1 Ln)) W( Y; w/ K) x
(setq y1 (+ y1 jd))# g+ g$ e* y. A2 ]; N# T( c3 B- i
(command "arc" (list 0 0) (list (/ L2 2.) y1) (list L2 0))' h' b5 ~4 o; w! f* r
(command "lengthen" (entlast) "")" Z/ \* R$ X9 C* n
(setq ln (getvar "perimeter"))
9 E, ?- J, v7 ~' Z (command "ERASE" (entlast) "")
5 o& D' Q+ A0 x) Z )& e: k2 j6 A* j2 Q ~
7 t8 D. k/ r! l% b# F
;;;------------------2 w/ S( D* a' ^
(setq Ln L2)& p$ z, \7 A) v( r
(setq y1 (- y1 jd))
; C6 U' m( _. [/ A (setq jd (/ jd 10)); _( y9 K. g; O* ]& E/ L; J0 M. B3 z
(while (> L1 Ln) ]+ \; n; w5 t& T
(setq y1 (+ y1 jd))- T# Z& A" h5 L; v/ n9 L
(command "arc" (list 0 0) (list (/ L2 2.) y1) (list L2 0))
# B! w4 @1 }$ D9 f5 P (command "lengthen" (entlast) "")$ u) C# b9 M/ }! C" T* r% Y
(setq ln (getvar "perimeter"))' M5 l5 `9 W: D, m) |( T+ J6 N
(if (> L1 Ln)
$ F) ^5 K/ M1 E6 R; g (command "ERASE" (entlast) "")
7 v3 ^3 k9 ?' g: V8 h ()
1 B# N# o5 U( l0 O )
) @- _7 L9 ~5 I- D4 T! Z( f )
; O9 V: o4 z, x; \! G4 z z
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