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弹簧源程序0 _3 I: U7 b2 {% b
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- (defun errMsg (s) ; 当命令执行时出现错误 7 z8 o9 j3 _: h0 [6 F8 N5 P
- ; 例如用户按下了CTRL + C
, Q$ f( H. r! O: X8 @ - (if (/= s "Function cancelled")
3 H5 J7 @4 ?# g B6 ?5 ~. I - (princ (strcat "* H# b1 s- @' e. C
- Error: " s))
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- (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值7 I( o7 K+ p9 ^$ n& t
- (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值2 A+ G- N1 h$ z
- (setq *error* olderror) ; 恢复旧的错误处理
" ~& z s6 Y2 b+ C0 ]* R' h$ T - (princ)/ h& y/ w! A' m3 P, `
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4 Y8 ?; Z0 O, k- v! g) |( L$ ]" C; [- (defun spring (nRepeat cntPoint bhfac lr strad bvfac
3 e/ \$ T4 {7 r6 \ - / angle distnc tp aGrw dhGrw dvGrw Pi2 dv)
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- (setvar "blipmode" 0) ; 关闭 blipmode
3 S/ Q5 M7 x" V, ]" q - (setvar "cmdecho" 0) ; 关闭 cmdecho+ l, I7 m2 U) L: q @% N. A
- (setq Pi2 (* 3.14159265 2))
' o6 R. }% k2 N - (setq aGrw (/ Pi2 lr))9 ~/ U# [2 T7 \
- (setq dhGrw (/ bhfac lr))
' c; o* y( Z m8 D) r/ N/ t - (if bvfac (setq dvGrw (/ bvfac lr)))1 ]9 w. |* n2 u* @
- (setq angle 0.0); Y; G+ t: n& E( J0 Q5 w( L
- (if bvfac
# b2 Y( @$ M2 G; U - (setq distnc strad dv 0.0)
! r( n) P* I9 Y. f$ D - (setq distnc 0.0)
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- (if bvfac
7 p3 \1 Y% E. s! g) l, c- |$ V2 ~ - (command "3dpoly") ; 开始绘制弹簧4 l: o5 T4 b( C, ?- y
- (command "pline" cntPoint) ; 从基点开始绘制弹簧% _6 }0 U6 M( m% S7 A5 ]
- )
' I: r; V6 d; ~ - (repeat nRepeat % k7 ]5 g0 k+ t# }8 z& l0 D
- (repeat lr
* L9 p9 F. m+ l+ V" o: ` - (setq tp (polar cntPoint (setq angle (+ angle aGrw))
, |% M& t y0 y6 ^3 l' t, X - (setq distnc (+ distnc dhGrw))
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- (if bvfac7 C, o+ I3 M$ ~* [* v) ?8 m
- (setq tp (list (car tp) (cadr tp) (+ dv (caddr tp)))
: |' s$ \( `, g; S& u7 [ - dv (+ dv dvGrw)
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- )
6 @+ y' E) Y9 T( ? - (command tp) ; 继续输入下一点
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( f' W: h/ `, \: } - (command "") ; 输入结束- I! e; y. Z5 Z
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- ;;; 生成三维弹簧函数调用接口9 o+ @$ {! e: k7 B& b+ l, V% Z
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- (defun C:3DSPRING (/ olderror cmdch blpmd cntPt RottCnt horiGrw vertGrw bgnRdtn ptCntPerCircle) : V! g0 m' J3 M+ h/ a
- (setq cmdch (getvar "cmdecho")) ; 获取cmdecho值，以便调用结束后恢复
: S4 r1 L2 P4 M( @1 J) g2 C/ o - (setq blpmd (getvar "blipmode")) ; 获取blipmode值，以便调用结束后恢复
/ F3 \' _; Y+ ~0 p4 d( T - (setvar "cmdecho" 0) ; 关闭 cmdecho
' I8 r0 E0 C# n" X. L+ X1 e - (initget 1) ; cntPt 必须非空: G8 r z5 u. V6 l( v0 W
- (setq cntPt (getpoint "5 x" G% B [& y. W$ q9 D( O, V
- 请输入底部中心点: "))/ a# R1 J/ i( j! \0 p
- (initget 7) ; RottCnt 必须非零、非空,不可忽略& K7 R# \2 ]% ^
- (setq RottCnt (getint "8 T4 N O, p2 y3 f( I2 w0 B
- 旋转的圈数: "))! J6 p1 A R; @0 K
- (initget 7) ; bgnRdtn 必须非零、非空,不可忽略4 m" F4 V; w: N* a" n$ z8 A9 s* X
- (setq bgnRdtn (getdist cntPt "9 n0 J7 F1 L$ ^8 t$ B6 t
- 起始半径: "))* ~5 o) G) P- t7 f3 X/ _1 t; W
- (initget 1) ; cf 必须非零、非空
0 x- N4 V5 `6 s- l& Y/ {5 ~ - (setq horiGrw (getdist ") O. I. ]% R! V; z9 J
- 每一圈的水平增长距离: "))! s+ V; q4 F# c
- (initget 3) ; cf 必须非零、非空$ M, R% C( r. G7 {2 P0 q8 w* L
- (setq vertGrw (getdist "' |- B: Q& y' p* E- j- X; S: A, y
- 每一圈的垂直增长距离: "))
& y: S. U9 `! r @1 z/ N - (initget 6) ; ptCntPerCircle 必须非零、不可忽略
# @4 C) T+ H4 p! U% A7 ^5 H - (setq ptCntPerCircle (getint "$ c! S8 F3 ]3 R0 |2 j! _+ a
- 每一圈的插值点数<35>: "))! W/ b/ M1 Z+ g2 y' _4 e5 O' }
- (cond ((null ptCntPerCircle) (setq ptCntPerCircle 35))) 4 t. O! y3 ^ Y+ I5 D3 U; y. ^6 f
- (spring RottCnt cntPt horiGrw ptCntPerCircle bgnRdtn vertGrw)
$ ~9 ]) _/ ]0 o5 H2 A% c - (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值
& I% q0 i6 |. r- Z# ]& i; K" a8 v - (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值
& ^' _" \ j' h# F- v& s( Q8 E! w - (setq *error* olderror) ; Restore old *error* handler/ I4 {( J; I& |; D- k2 v
- (princ). U- N( g* J- g# b
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发表于 2010-3-13 11:12
楼主