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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！！！1 d3 l1 A2 t8 P& d
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(defun C:spring()' }/ {5 D1 E) j' v# _
(setq bp (getpoint "\n 弹簧中心点"))5 ?& P+ S& \2 u9 P n1 Z3 S m
(setq dw (getreal "\n 弹簧直径="))
; j2 P2 d6 D+ V- Y' X (setq d (getreal "\n 弹簧丝径="))
' f) Y+ g2 v4 A" N (setq pitch (getreal "\n 弹簧节距="))
8 O4 ?- ]& G( H/ C# |* E( i; k (setq len (getreal "\n 弹簧长度＝"))
% L1 _" _, P8 j4 _7 H& S (setq n (getint "\n 段数="))- f; R8 T( m7 F# B6 ^* |" K
(setq r (/(- dw d)2))
2 T2 K* I0 v4 b% t$ i (setq d1 (- d (* 1.0825 pitch)))4 \: L( b. a/ x
(setq r1 (/ d1 2))
1 z4 R5 ?0 }* ]* R% M/ [1 G (setq m1 (fix (* n 1.25))). R" ]; \$ [/ `4 F6 J& G; D
(setq m0 (fix (*n (/ (- len (* d 2)) pitch))))3 U# d) J% V; f6 g6 w* D
(setq delta (/(* 2.0 pi)n))% b- ?. M4 M# I: v: A/ ]" Z4 Z) Z# ]
(setq j0 (/ pitch n ))+ s( z: [7 c. Y
(setq j1 (/ d n ))
8 o: s* a, W3 \5 U3 Z6 y4 v1 Y (setq bz (caddr bp )). ]7 g% Y6 d$ u+ f+ N& }
(setq ang 0)
# T: J+ y5 @5 H9 I0 H* k (setq jj 0 )
- a R/ U+ [& X3 Q (command "UCS" "o" bp )6 ~5 S/ v7 j: ]" O6 S9 |. {. F' Q
(command "3dpoly" (list r 0 0 ))
2 g7 B( a' J P q" `' h9 [ (repeat m1
3 c2 v' S( ^9 e: ? (setq jj (+ jj 1)) S, {- A2 [- m2 l
(setq ang (+ delta ang ))7 r: y( g& j* x! ]* v
(setq pt1 (list (* r (cos ang ))(* r (sin ang ))(+ bz (* j1 jj))))2 Q' {& ~2 p* V6 F3 n% V
(command pt1)
/ s( R& l/ C: S& w& p$ Z/ q! N/ c: ] )
/ |% r- D) G: Z+ G& { (setq bz (caddr pt1))
! k, o6 @# O0 I; v, {9 w+ ]: M (setq jj 0)8 s0 [6 D7 O4 }" e& y: Z2 c9 q
(repeat m0$ D/ L0 n- o3 Q% h/ S
(setq jj (+ jj 1))# ^; _3 j; G) y: z; y- O
(setq ang (+ delta ang ))
! H7 X: V$ Y& }' V8 G7 D, p (setq pt0 (list (* r (cos ang ))(* r (sin ang ))(+ bz (* j0 jj))))
6 d! j' q! A) y% s" ?& U' ]' P5 O4 C% { (command pt0)
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(setq bz (caddr pt0))$ b5 t2 y; l/ H0 b0 {4 Y9 u8 ^5 @
(setq jj 0)8 x/ \( R/ E A8 _, H- G$ I
(repeat m1. l) U3 `' Y- j6 w9 k
(setq jj (+ jj 1))5 h6 T" i+ _) ^
(setq ang (+ delta ang ))
5 u# \9 ^* W' V (setq pt2 (list (* r (cos ang ))(* r (sin ang ))(+ bz (* j1 jj)))) Z' C% g9 e3 R1 I4 @7 k
(command pt2)
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(command "")
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发表于 2009-2-19 19:57:15
楼主