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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！！！
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# e$ h7 s \( z5 `9 B7 T+ H; R. ~(defun C:spring()
! H' W+ i- @% f; u. V) G; u (setq bp (getpoint "\n 弹簧中心点")): T( F; O, B2 Z" O% n
(setq dw (getreal "\n 弹簧直径="))
/ [6 H5 [" B& Z! U# V5 o" o* p (setq d (getreal "\n 弹簧丝径="))4 E" \, f8 B% L
(setq pitch (getreal "\n 弹簧节距="))
7 }. J2 B" P, u4 L' L/ w: } (setq len (getreal "\n 弹簧长度＝"))
9 O( K$ m- Y' m! c- w (setq n (getint "\n 段数=")), x2 x1 J' w$ `
(setq r (/(- dw d)2))
% t) e9 E9 d9 D; h) F (setq d1 (- d (* 1.0825 pitch)))
' F, V0 ?% C$ V+ z$ O (setq r1 (/ d1 2))
& e$ _" s. r+ Z4 f (setq m1 (fix (* n 1.25))): e: f. r# @( t: k& b; f
(setq m0 (fix (*n (/ (- len (* d 2)) pitch))))9 k2 @0 e, Q s
(setq delta (/(* 2.0 pi)n))
& w0 v h* S( { (setq j0 (/ pitch n ))( F5 Y3 B: [+ v8 ~$ V3 n. A9 V/ o
(setq j1 (/ d n ))' l/ F1 C7 m1 P! ^1 w& I1 y' w
(setq bz (caddr bp ))
9 y% h4 G4 h" v- h* h (setq ang 0)
! Q2 e0 V3 ^$ B1 G9 q% r (setq jj 0 ) W6 o! ^1 `. [: w* C; {, V
(command "UCS" "o" bp )! Z4 x& g- W+ ~7 n3 L
(command "3dpoly" (list r 0 0 ))8 _- a! v U4 Z8 l
(repeat m1
& l8 ? {* M1 d; [# P1 k9 v (setq jj (+ jj 1))
8 ]% \% \ b: \- i (setq ang (+ delta ang ))
+ |% N$ i! T; d* k7 Y (setq pt1 (list (* r (cos ang ))(* r (sin ang ))(+ bz (* j1 jj))))0 `/ F. x) g0 T, F& O
(command pt1)
% B& Q/ G* Z$ E. h0 M& W )
; Z2 v, {0 X9 i/ p; I0 x (setq bz (caddr pt1))# q/ p2 ^- A7 v( m
(setq jj 0)
+ K- c- g) |( }$ Z (repeat m0# g$ B" d7 Z1 ~' t# M5 y4 }
(setq jj (+ jj 1))
3 h# A0 b! N/ ~# V Q) X6 x (setq ang (+ delta ang ))9 U$ Q: J. L; l; S2 z& ~' m0 K
(setq pt0 (list (* r (cos ang ))(* r (sin ang ))(+ bz (* j0 jj))))
* C/ M8 n3 G9 X- ?, [ (command pt0). \* h3 _. ^! u
)
/ o4 [$ c' h. l3 |; J) u1 ` (setq bz (caddr pt0))* o% N- o1 c5 B+ U
(setq jj 0): @* o) W; A$ Z7 e' t! ]
(repeat m1( w. X/ _3 k: a( O1 E9 S- q
(setq jj (+ jj 1)): N! F# y3 o- j/ T9 {
(setq ang (+ delta ang ))
$ s7 {9 G; t+ J6 t7 k& D7 S: J (setq pt2 (list (* r (cos ang ))(* r (sin ang ))(+ bz (* j1 jj)))). F" c1 Q& d' P7 ^: {; c: s# Y! B
(command pt2)7 K8 H. E! v- b4 ` f' }
)
9 r" _' J* q+ d, H- Z; N (command "")
+ ?' W% ]5 d% u% Q! N5 X- f8 n) |
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发表于 2009-2-19 19:57:15
楼主