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弹簧源程序
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- (defun errMsg (s) ; 当命令执行时出现错误
) j8 N- d) l2 ^% G# } - ; 例如用户按下了CTRL + C5 W; } a! X* C0 {
- (if (/= s "Function cancelled")' N5 t! @ A4 B3 w/ r6 u+ J9 P
- (princ (strcat ", S9 G2 Q% z5 o' w# ?3 X- k
- Error: " s))9 a' ~; ?- ]: V5 a( S
- )
( x' u' I( \! H4 J$ d4 ~ - (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值
& R. o; ~1 E+ q5 p. j - (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值 Z g ^+ ^0 R1 `4 [8 o& J' t
- (setq *error* olderror) ; 恢复旧的错误处理
' W3 S0 a0 a1 w - (princ)
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2 k! e! Q# e# y8 W+ x- (defun spring (nRepeat cntPoint bhfac lr strad bvfac
4 f$ K, T: D7 w( f4 x' K2 W - / angle distnc tp aGrw dhGrw dvGrw Pi2 dv)7 `6 N/ t3 q0 U/ p
! y& D3 `$ I+ }8 L/ R' B6 u" q6 J, l- (setvar "blipmode" 0) ; 关闭 blipmode 0 u( E* I h9 R+ X+ k. ~
- (setvar "cmdecho" 0) ; 关闭 cmdecho- d0 s, x, }" D8 J. G' D& [$ Q
- (setq Pi2 (* 3.14159265 2)); M. T; Q, l$ h
- (setq aGrw (/ Pi2 lr))
" `$ X x( i& F: d1 @ - (setq dhGrw (/ bhfac lr))7 c- _* A, w$ E4 y6 a
- (if bvfac (setq dvGrw (/ bvfac lr)))
' p( a3 T* N* }6 d' N# D4 _' M! m - (setq angle 0.0), I$ w t7 x1 f# a8 {9 H
- (if bvfac
# I( t0 P7 n" `$ F$ C& @ - (setq distnc strad dv 0.0)
+ k4 Q: z$ j i) X7 s, Z( U - (setq distnc 0.0)
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- (if bvfac
$ g6 o1 G1 N W9 Q8 ?& v4 f - (command "3dpoly") ; 开始绘制弹簧
% K: D9 u! Z A8 f2 a - (command "pline" cntPoint) ; 从基点开始绘制弹簧, O) U# P& s" m# M3 `' M% x. W
- )
* C/ q9 G) @/ [! t) J; ? - (repeat nRepeat + M6 C h6 h& o* Z
- (repeat lr , J4 _7 M% k% G. y* }
- (setq tp (polar cntPoint (setq angle (+ angle aGrw))7 G D. I9 P' H4 A/ i3 i
- (setq distnc (+ distnc dhGrw))
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- )
4 B2 X; A% l3 |4 Q+ `5 G! ?; W - (if bvfac/ W) C8 }( l2 |) K2 a
- (setq tp (list (car tp) (cadr tp) (+ dv (caddr tp)))
1 T4 `. b2 c4 r6 U! G% l - dv (+ dv dvGrw)
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- (command tp) ; 继续输入下一点! x+ ^9 [7 c, j% \, ?2 Y
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- (command "") ; 输入结束
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- ;;;
0 n) Q6 C: Z1 G& e3 D2 d - ;;; 生成三维弹簧函数调用接口' O+ N& z" A0 M: O3 w
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% {; {! i3 j3 C- (defun C:3DSPRING (/ olderror cmdch blpmd cntPt RottCnt horiGrw vertGrw bgnRdtn ptCntPerCircle)
2 C; b' r9 i$ ?9 S3 v1 L$ b3 ] - (setq cmdch (getvar "cmdecho")) ; 获取cmdecho值,以便调用结束后恢复
+ J' F; V3 X. z - (setq blpmd (getvar "blipmode")) ; 获取blipmode值,以便调用结束后恢复3 f, N( l1 D4 S6 p. W5 ~6 I
- (setvar "cmdecho" 0) ; 关闭 cmdecho 0 M+ O" p. m) b
- (initget 1) ; cntPt 必须非空, a1 d( l8 ?; j/ `. l) R# g
- (setq cntPt (getpoint "
0 d+ \1 L J3 L7 f( | `$ P) }+ F$ @ - 请输入底部中心点: "))
9 ?; I8 ^) z! G' Q8 V8 t- P - (initget 7) ; RottCnt 必须非零、非空,不可忽略
5 j4 M% u( I/ }6 f( H" k - (setq RottCnt (getint "
y3 s& p% P; B: _2 F/ X - 旋转的圈数: ")); i C& x3 Q& z' Y+ K: f
- (initget 7) ; bgnRdtn 必须非零、非空,不可忽略
9 u! T8 {: T2 L% s& k3 ^8 W - (setq bgnRdtn (getdist cntPt "
+ u- ~# y3 ?8 c3 @- s( ` - 起始半径: "))" T# ~! {3 c8 \8 c9 i) u2 e
- (initget 1) ; cf 必须非零、非空
! @2 X: \& L) l Q0 M |% D3 q - (setq horiGrw (getdist "( }* Y/ u% H5 w3 }/ o" n3 C
- 每一圈的水平增长距离: "))
7 O! A+ k9 u! ^* s$ ? - (initget 3) ; cf 必须非零、非空
! F3 F' K# g% p2 K3 z2 l& Q) ] - (setq vertGrw (getdist "
" H0 e* ]. j9 O* J: t9 H - 每一圈的垂直增长距离: "))
4 q; L( q$ s! }7 {& s: j% B - (initget 6) ; ptCntPerCircle 必须非零、不可忽略
' l1 A* P% r" ]- \2 P, J0 k - (setq ptCntPerCircle (getint "1 f: W$ T# R6 M, O) C9 T6 V
- 每一圈的插值点数<35>: "))- _* L, O v+ P6 \, K
- (cond ((null ptCntPerCircle) (setq ptCntPerCircle 35)))
" ]4 e. z/ _, D7 L0 r- H8 T - (spring RottCnt cntPt horiGrw ptCntPerCircle bgnRdtn vertGrw)( e: E! R* K( n' d
- (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值$ A8 Y( f! E1 Z! \1 M
- (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值
( E, m7 ^0 R$ @% h1 v. g9 X - (setq *error* olderror) ; Restore old *error* handler
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