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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 + n! ?: W$ z' n0 g3 r
- ; 例如用户按下了CTRL + C' a; L8 }" f7 }: c) q
- (if (/= s "Function cancelled")
1 y) o' B _: ?# _3 i- ^5 B. x - (princ (strcat "7 z! O# x g9 b' M( U$ z
- Error: " s))
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- (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值
) p6 ]. ?' @( g/ i; h7 Z - (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值' i( Z x5 l$ j
- (setq *error* olderror) ; 恢复旧的错误处理9 \9 D. R. L4 o- f/ ?
- (princ)7 ]# ?( b0 ~" ]
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$ I' Z, p/ x- W& d- (defun spring (nRepeat cntPoint bhfac lr strad bvfac8 A& ]6 i4 g' U+ v1 Q" r
- / angle distnc tp aGrw dhGrw dvGrw Pi2 dv)4 _2 [" h5 ^1 d, p9 n
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- (setvar "blipmode" 0) ; 关闭 blipmode
7 }% q) E8 t) v' k q5 s. f8 ?1 R - (setvar "cmdecho" 0) ; 关闭 cmdecho# v/ a+ ~+ Q0 X ~
- (setq Pi2 (* 3.14159265 2))8 A' |! v% Z) p4 J, \, s% m9 }* \& g
- (setq aGrw (/ Pi2 lr))5 B! ]2 y5 G9 t7 G
- (setq dhGrw (/ bhfac lr))/ S& }6 J, K% p
- (if bvfac (setq dvGrw (/ bvfac lr)))
+ @" P/ R& e% @6 q- V4 q' F - (setq angle 0.0)* u5 H( d; ~6 R2 x# p
- (if bvfac
0 j" A w# ?2 Z3 D( ]! r - (setq distnc strad dv 0.0)
7 Z- m3 l* L2 a" w5 v - (setq distnc 0.0)
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% r: k0 i x9 m2 Y* J- b - (if bvfac & Y$ b! b0 H) \" g7 n
- (command "3dpoly") ; 开始绘制弹簧
0 O, q* @. ~. Z: y - (command "pline" cntPoint) ; 从基点开始绘制弹簧
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- (repeat nRepeat # z9 T/ d4 p" P! K( [4 c! I0 A; F
- (repeat lr 9 w2 }/ b! `5 ^0 r. h
- (setq tp (polar cntPoint (setq angle (+ angle aGrw))
9 M! |, z: ?! S* O - (setq distnc (+ distnc dhGrw))
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- )
: |: ~6 ^+ I/ U1 `: ~& s0 ] - (if bvfac
+ ?# C* X! N# o2 a7 \$ ]! K - (setq tp (list (car tp) (cadr tp) (+ dv (caddr tp)))
" A0 {2 o' @7 p - dv (+ dv dvGrw)9 v2 e. e# ~7 Z; x
- )
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- (command tp) ; 继续输入下一点+ x# Q+ e" Q+ M1 y
- )
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0 x9 |4 {2 G4 t' w! g, Z, v - (command "") ; 输入结束5 W6 K2 }; z1 c
- (princ)
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- ;;;
( m/ v) @& f2 [! ~% L/ H Q - ;;; 生成三维弹簧函数调用接口
* n# ^. {) b7 E - ;;;
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- (defun C:3DSPRING (/ olderror cmdch blpmd cntPt RottCnt horiGrw vertGrw bgnRdtn ptCntPerCircle) % a8 q5 m8 i. z, L/ O# v
- (setq cmdch (getvar "cmdecho")) ; 获取cmdecho值,以便调用结束后恢复
. i" U% `0 {/ O) I" f$ t, f1 @ - (setq blpmd (getvar "blipmode")) ; 获取blipmode值,以便调用结束后恢复* ]9 N9 ]5 W/ R0 c+ v
- (setvar "cmdecho" 0) ; 关闭 cmdecho
3 F9 m- ^ N& h3 l- _0 Y, W - (initget 1) ; cntPt 必须非空
# d& {* L6 f+ E' `$ _" p" x/ v) s& n - (setq cntPt (getpoint "
9 ?" |: T+ ^+ u - 请输入底部中心点: "))3 r) M) z: ^8 O4 e' q6 V
- (initget 7) ; RottCnt 必须非零、非空,不可忽略
5 f7 N# t' }9 F0 { - (setq RottCnt (getint "/ e M$ P, s) {. e; Z
- 旋转的圈数: "))4 B) G6 d2 Q b, D/ R& H0 O
- (initget 7) ; bgnRdtn 必须非零、非空,不可忽略
/ o5 d7 t! K7 @! B - (setq bgnRdtn (getdist cntPt "! r$ h& R% S3 Y9 m& T) A9 G9 }
- 起始半径: "))( R( |: D9 q4 Q" w0 S' r9 Q) W& ?, C
- (initget 1) ; cf 必须非零、非空1 ~3 B) E- I# R4 w* e$ g
- (setq horiGrw (getdist "
% e# }# v. W! [6 d g, Q& }5 w - 每一圈的水平增长距离: "))
0 O( V& Q/ t: a. `5 c - (initget 3) ; cf 必须非零、非空
9 a6 V$ Z9 B( |2 D9 G7 J - (setq vertGrw (getdist "
$ d! V* ~: c" ~% ?( S, b+ i - 每一圈的垂直增长距离: "))( Z; B% ?7 _4 T! c0 V- H1 |( V
- (initget 6) ; ptCntPerCircle 必须非零、不可忽略
: W3 n+ @8 g' v - (setq ptCntPerCircle (getint "
$ j) O! D, E" b+ K' w& D8 \4 {; E - 每一圈的插值点数<35>: "))
$ G6 y z5 l# Y% B0 Q - (cond ((null ptCntPerCircle) (setq ptCntPerCircle 35)))
1 o% g4 n: ^9 z1 k7 ^' o+ H- a, l - (spring RottCnt cntPt horiGrw ptCntPerCircle bgnRdtn vertGrw)
, W) E6 B. g: P/ T. l! | - (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值
. `2 |4 |* w& l2 O - (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值
$ d- p% B- _( |4 q - (setq *error* olderror) ; Restore old *error* handler6 H8 H3 F$ C' _& N& I9 s
- (princ)" J* {, V- i/ L
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