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弹簧源程序, a5 {& w- y+ v
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0 @- y b/ P3 | l( m# S- (defun errMsg (s) ; 当命令执行时出现错误
% z( V4 Z2 h6 ?4 I% R - ; 例如用户按下了CTRL + C
* Y+ G8 N h3 [6 R - (if (/= s "Function cancelled")
3 r- I: J7 ?' T: _* b4 I% Y) a - (princ (strcat "
( U9 _5 S/ E2 e, D - Error: " s))% ~5 v% M' I/ y
- )
" F7 F9 R# f: R0 S - (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值
8 k4 z& y7 `. C5 c& q1 f- X0 g - (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值
# W7 w- D& i7 G# r8 P - (setq *error* olderror) ; 恢复旧的错误处理
" h! C! @, o5 h6 S+ q7 ?9 p - (princ); [( r0 w5 R( E7 z# l6 d
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6 J1 g) P6 A, {) @; u# W- (defun spring (nRepeat cntPoint bhfac lr strad bvfac
! D' ]' i6 r4 c7 ^/ ]/ ]* I - / angle distnc tp aGrw dhGrw dvGrw Pi2 dv)3 S8 c8 e' h& T6 E
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- (setvar "blipmode" 0) ; 关闭 blipmode & u3 T" [/ @6 j! C
- (setvar "cmdecho" 0) ; 关闭 cmdecho0 }$ n% b9 j7 S6 Z; I5 c4 q: }
- (setq Pi2 (* 3.14159265 2))
* r- @+ C: X; z+ Z3 [7 n - (setq aGrw (/ Pi2 lr))
& G7 M9 D+ _' p. v - (setq dhGrw (/ bhfac lr))- W9 a9 m* q1 `3 ]
- (if bvfac (setq dvGrw (/ bvfac lr)))
2 m* v& e8 m/ S* {- Y - (setq angle 0.0)
: i1 y, W8 t8 U/ O: i5 A - (if bvfac
, U! Q. b4 {0 ~! R - (setq distnc strad dv 0.0)
* R+ A V1 U. B4 {* }# \6 n - (setq distnc 0.0)- w5 t( U1 W S4 ^* j
- )
4 r( w, @( b% b& R - (if bvfac
. u; V2 q. c1 R$ P) r - (command "3dpoly") ; 开始绘制弹簧) g& ]2 k7 t2 J; d. g3 b9 Y) r, z
- (command "pline" cntPoint) ; 从基点开始绘制弹簧0 x* W! |; e4 ]# H& w _. [0 K! p
- )6 ^# G, m5 e1 ^( e" w' E
- (repeat nRepeat 3 V0 @0 z! _, j% h" L$ D9 I
- (repeat lr
4 M6 N7 r1 G$ r3 d& F - (setq tp (polar cntPoint (setq angle (+ angle aGrw))
' l. D# j8 X8 k, F - (setq distnc (+ distnc dhGrw))
( {2 d- M/ O3 T - )
' }) m- ]6 h" Z - )6 n* p6 N: N# c6 V5 K/ Z
- (if bvfac
) u8 Y9 {4 \, }& S; D - (setq tp (list (car tp) (cadr tp) (+ dv (caddr tp)))9 l4 D- u6 l* r$ B
- dv (+ dv dvGrw)
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- )/ T; G5 p% s2 l. Y
- (command tp) ; 继续输入下一点
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( q0 n5 D: t% o$ \ - ) 5 p- c6 N A" {% u9 A4 V" z0 v5 }
- (command "") ; 输入结束
% W3 q- D5 m2 R( q& O! W9 W - (princ)- V( u8 n) u& ?( ^
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- ;;;7 u Z/ Q6 L( x* C) M9 X
- ;;; 生成三维弹簧函数调用接口
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1 c5 i& f4 I% D, H( R- (defun C:3DSPRING (/ olderror cmdch blpmd cntPt RottCnt horiGrw vertGrw bgnRdtn ptCntPerCircle)
" U# Q3 a6 {2 x0 b+ y3 x- G4 X - (setq cmdch (getvar "cmdecho")) ; 获取cmdecho值，以便调用结束后恢复
: {- w' a2 Z- Y! C9 ]! b - (setq blpmd (getvar "blipmode")) ; 获取blipmode值，以便调用结束后恢复
- u) `1 Q) l) z0 R9 P% J0 Z7 v - (setvar "cmdecho" 0) ; 关闭 cmdecho
3 D: D A" ?: f2 e8 G5 s: ~ - (initget 1) ; cntPt 必须非空7 N2 z, C A$ g% T1 K1 }
- (setq cntPt (getpoint "6 c. C' \. w; m5 g$ T0 C& a& u
- 请输入底部中心点: "))- ?9 r8 ]3 _0 W* S% P# E
- (initget 7) ; RottCnt 必须非零、非空,不可忽略0 O& X8 L. t. T, W/ G
- (setq RottCnt (getint "
4 g* c' }. R7 k9 j) l9 k9 V - 旋转的圈数: "))
2 ?. Q8 q; I2 V( e; Y# Z - (initget 7) ; bgnRdtn 必须非零、非空,不可忽略+ Z3 y7 B u: t! C/ i5 ?
- (setq bgnRdtn (getdist cntPt "6 [5 f4 }( t/ U- I7 \; m$ ^
- 起始半径: "))
8 t! P9 I# u0 n0 e( X - (initget 1) ; cf 必须非零、非空% w' T. ?& U6 O: L' H4 F3 N% ^
- (setq horiGrw (getdist "
) F% ]. L, Z( p9 y& k) {% K - 每一圈的水平增长距离: "))
! D8 `. J2 F$ _! T) D - (initget 3) ; cf 必须非零、非空
" F5 r% v6 U G' G - (setq vertGrw (getdist "
1 L w7 ]3 F! [$ a; W- @: ?4 Y - 每一圈的垂直增长距离: "))- m; l+ T+ K' |& W
- (initget 6) ; ptCntPerCircle 必须非零、不可忽略
& e6 v( N5 J3 b7 t% o - (setq ptCntPerCircle (getint "% d% ]% L$ b# k$ ]
- 每一圈的插值点数<35>: "))
z* h& t3 v y* w/ n/ P; L# y3 r - (cond ((null ptCntPerCircle) (setq ptCntPerCircle 35))) ; p9 W1 L# Y" v3 w/ h6 T
- (spring RottCnt cntPt horiGrw ptCntPerCircle bgnRdtn vertGrw)
! {* a( `1 x1 k0 _- ?( A" A - (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值
e- P( @ S x1 P3 n - (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值+ _2 v; ~1 i$ z3 ^' m/ a) y- B
- (setq *error* olderror) ; Restore old *error* handler- ^4 c$ V. g! D
- (princ)
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发表于 2010-3-13 11:12
楼主