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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！！！! O/ O( A5 G- ~$ M' l M# W
. f3 j/ w. i6 e6 |(defun C:spring()8 r% l$ E3 x) `9 w5 r2 ~1 p/ Q' c
(setq bp (getpoint "\n 弹簧中心点"))
& a% O w5 w$ e9 N/ `: w. M- J (setq dw (getreal "\n 弹簧直径="))$ E2 _8 x1 J$ q' t5 w7 S: {
(setq d (getreal "\n 弹簧丝径="))
9 p0 u2 X5 T' W0 b5 ` (setq pitch (getreal "\n 弹簧节距="))
. a9 Y! [3 h+ `+ P+ @ (setq len (getreal "\n 弹簧长度＝"))
" b" r9 c% r% l& V5 I$ {; U4 B (setq n (getint "\n 段数="))) |% v& n. W# W5 n: ~, I
(setq r (/(- dw d)2))
6 @ ^4 f/ z- m) `& O (setq d1 (- d (* 1.0825 pitch)))9 J/ G8 a2 u9 m# h
(setq r1 (/ d1 2))
2 r s1 b' L+ I/ h0 d: J" C* Q (setq m1 (fix (* n 1.25)))
2 Y: Q- C& {+ G8 r5 E (setq m0 (fix (*n (/ (- len (* d 2)) pitch))))
7 L) C4 ?/ t8 G" R# d. v0 B; |: @( G (setq delta (/(* 2.0 pi)n))- W0 C( I5 s1 J3 b( l, i1 e. Q3 r
(setq j0 (/ pitch n ))9 o; N6 C$ w4 Q' Q8 k# D0 B/ O0 O
(setq j1 (/ d n ))1 ^7 `* O7 b( p% j0 Q3 T9 N
(setq bz (caddr bp )): v5 s: W. Z$ `. L% F2 T
(setq ang 0)
' j: Q6 e3 q- c' T& o- V. B (setq jj 0 )+ Q# d* Q2 g7 k4 n
(command "UCS" "o" bp )
9 R& [* b$ N5 y' J7 q; Q2 n (command "3dpoly" (list r 0 0 ))* {5 k& I4 O; A3 A$ S0 }( h7 D
(repeat m1, B0 t; F* @+ \) B9 L1 ^8 D
(setq jj (+ jj 1))# \6 m4 d1 ]" b" }2 m- ~$ f
(setq ang (+ delta ang ))) W7 J+ u# z' B; D
(setq pt1 (list (* r (cos ang ))(* r (sin ang ))(+ bz (* j1 jj))))
2 H" h# c. Z9 U7 A( E, S- O7 w (command pt1)
: Z! m9 B# I- c" l1 @% [3 w- U )/ e1 ^* U5 U( ]" F1 a: M2 T
(setq bz (caddr pt1))7 U+ d. [# _/ `7 @
(setq jj 0)
: y! u$ A+ v7 N3 S" o' S) s (repeat m03 |: p9 U2 J+ g8 q1 Z6 p5 |
(setq jj (+ jj 1))
" I4 a3 ~" ]( k" n9 s (setq ang (+ delta ang ))
0 f. {+ n4 W1 e/ g$ z: x (setq pt0 (list (* r (cos ang ))(* r (sin ang ))(+ bz (* j0 jj)))) [) K' R* p3 o x
(command pt0)* \* Y4 W% }- F0 {" J
)
7 ]& _3 Q& g3 r) I6 S (setq bz (caddr pt0))5 H3 O+ E$ ^7 |' l0 h
(setq jj 0)
* `+ U" b1 n: @5 ]) E& S0 G (repeat m1
" l, W- Q- T1 R9 o (setq jj (+ jj 1))
' d0 f# k$ ^; L* i; D$ X, ^ (setq ang (+ delta ang ))
1 H; s' s# Y) ^3 ? (setq pt2 (list (* r (cos ang ))(* r (sin ang ))(+ bz (* j1 jj))))
F3 V6 T& b6 e# f+ I' q (command pt2)1 \3 f; H" I+ B3 V
): m' o4 U" i% o! b% h
(command "")( j2 R# k( E3 L) ?5 t) H' s
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发表于 2009-2-19 19:57:15
楼主