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下面是我已经有了的画弹簧的程序，可是怎么才能让它可以画出扭转弹簧的三维程序呢，请高手指点，非常感谢！！！
/ S' q' q0 P9 G" u6 ~2 j% x
4 E# h6 P3 n4 `& o- e" U h" E; Y6 U(defun C:spring()
, P5 A/ T% k/ n) _- T: n" A (setq bp (getpoint "\n 弹簧中心点"))* [( W& h2 q# F( B3 f3 z- ]
(setq dw (getreal "\n 弹簧直径="))2 \% g1 V2 p' |0 u N/ o
(setq d (getreal "\n 弹簧丝径="))" C, N" Q R" o8 Q0 R' M+ j6 e8 j
(setq pitch (getreal "\n 弹簧节距="))" ^: b$ T0 r+ ?4 p
(setq len (getreal "\n 弹簧长度＝"))% e x# F6 ]. |% L$ z0 f v
(setq n (getint "\n 段数="))6 M% ~; J" m, i8 g6 V
(setq r (/(- dw d)2))
' R9 @. e2 M8 u5 l; l" i (setq d1 (- d (* 1.0825 pitch)))/ v' _. x- P$ ]% X
(setq r1 (/ d1 2))2 \$ w& Y% [2 E" w- Y5 F
(setq m1 (fix (* n 1.25)))# h: U* Z6 Y1 z7 A( Q4 L: l: g6 J
(setq m0 (fix (*n (/ (- len (* d 2)) pitch))))
9 U1 U k; P6 h (setq delta (/(* 2.0 pi)n)), n9 c3 ]+ q7 v$ ]
(setq j0 (/ pitch n ))+ K- @6 ]2 N6 _7 q# L6 V3 g7 Q! K3 B
(setq j1 (/ d n ))' _7 B5 d6 K6 H, b
(setq bz (caddr bp ))
& N4 F- T2 t" q+ Z (setq ang 0)
: @5 q) |8 c' q" J8 E (setq jj 0 )
" i- [$ {6 J8 I- ^( {( @4 z! L (command "UCS" "o" bp )
% j5 F0 Q; A2 z) h6 Q (command "3dpoly" (list r 0 0 ))) v W D; r; i2 v |+ k* k0 {. c4 p4 t1 t
(repeat m1
2 Y1 ~: o0 V3 }6 [* _0 ^ (setq jj (+ jj 1))5 j) L8 V4 c' }8 ]
(setq ang (+ delta ang ))3 [4 O) e5 `( T6 C' f
(setq pt1 (list (* r (cos ang ))(* r (sin ang ))(+ bz (* j1 jj))))' o2 q. |+ r+ S0 g8 i) R# |
(command pt1); n+ Y. C K0 p
)
$ d; R9 w/ A; L# b6 T (setq bz (caddr pt1))& z0 t1 c. f6 i+ c3 ?
(setq jj 0)6 X2 r/ V; g q
(repeat m0
& V& T( J' i9 U7 ~* U (setq jj (+ jj 1))
; c/ F) N) P! Y X- |& C/ U' U (setq ang (+ delta ang ))
?# v) Y$ _- A" j) C; @ (setq pt0 (list (* r (cos ang ))(* r (sin ang ))(+ bz (* j0 jj))))
5 o: c1 P4 }$ @" F% ?* L0 _1 C9 ` (command pt0)( I# r; d* A6 O2 k9 F: _, s
), v" u" L% G1 }; H) n+ Q, @8 J0 q
(setq bz (caddr pt0))
h5 S: [5 j" Z. Z (setq jj 0)
& j% N% z& o" s, p4 K( ^# x (repeat m1
' R8 P/ X8 |5 L/ m" K (setq jj (+ jj 1))
9 _5 ~9 t, \$ L# l; i (setq ang (+ delta ang )): I; v0 f5 d0 G( o4 G1 L
(setq pt2 (list (* r (cos ang ))(* r (sin ang ))(+ bz (* j1 jj))))0 X8 W; @/ g1 @! |9 P" Z+ @) H
(command pt2)
/ G5 H/ w6 x! v6 B )/ |8 e4 y" ]& ~* A2 D
(command ""); O: Y* j/ f8 K% c* |" P" u
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发表于 2009-2-19 19:57:15
楼主