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弹簧源程序
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& |7 R" {, D9 T, x! H* j+ h0 p- (defun errMsg (s) ; 当命令执行时出现错误 ' l! s$ h% X0 [- T
- ; 例如用户按下了CTRL + C% _; z/ D0 g2 J& m2 n' [
- (if (/= s "Function cancelled")9 Y$ E& D q( Q5 p: z
- (princ (strcat "8 ~ F* W/ t4 d6 F j4 s
- Error: " s)), W- Z& H O& C1 J- \4 A! i$ c
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- (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值; U$ Y! G& b4 i6 X
- (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值# a$ @4 E! G+ c# r! L
- (setq *error* olderror) ; 恢复旧的错误处理! F3 h; y [3 H3 Y
- (princ)
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$ x( {) ^; Y7 q- (defun spring (nRepeat cntPoint bhfac lr strad bvfac- Y6 F2 y. m% f
- / angle distnc tp aGrw dhGrw dvGrw Pi2 dv)
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) ~" y$ v9 T3 O! C }: w3 Z# e# Y- (setvar "blipmode" 0) ; 关闭 blipmode
+ Y2 g+ s; C. T. P, C8 j0 y - (setvar "cmdecho" 0) ; 关闭 cmdecho5 u7 h9 J% C! N+ h$ u# E) m( }
- (setq Pi2 (* 3.14159265 2))5 A3 B$ t2 _% s' Q4 Q
- (setq aGrw (/ Pi2 lr))
( W& v0 X0 ^" {+ X9 J7 a - (setq dhGrw (/ bhfac lr))
8 G' d1 V ^, C& S x! A - (if bvfac (setq dvGrw (/ bvfac lr)))0 L# X2 p7 D1 ]. X
- (setq angle 0.0)) a6 S* M$ Z7 E5 \) J$ M# O
- (if bvfac1 o o) i2 O6 j+ w7 m; K
- (setq distnc strad dv 0.0)
- I: i! B: }0 J' t+ U - (setq distnc 0.0)% s9 x. y0 A. q5 [' L& ^- P( ]% ]
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( l! \7 [( u8 F% E/ @ - (if bvfac ' U; X* q; W; ~+ w; N
- (command "3dpoly") ; 开始绘制弹簧
) w+ E4 b0 N, Y# o; M - (command "pline" cntPoint) ; 从基点开始绘制弹簧2 L! m! ~9 B" P' T
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- (repeat nRepeat
7 D$ y" g4 `! Z - (repeat lr 5 X# J. s$ X2 `, E2 T$ z' R
- (setq tp (polar cntPoint (setq angle (+ angle aGrw))
& T, D- D- E5 a: N - (setq distnc (+ distnc dhGrw))
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- )0 t& B5 S) O0 a5 F6 | {" U( n
- (if bvfac
( a9 ^& h0 `4 z/ w+ z$ P! } - (setq tp (list (car tp) (cadr tp) (+ dv (caddr tp))) m! I* X) ]1 l2 I- R
- dv (+ dv dvGrw)
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- (command tp) ; 继续输入下一点; ~' s( c. x1 i( N
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- (command "") ; 输入结束
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- ;;;
! I$ b, y, x+ s M( N* h, _8 c - ;;; 生成三维弹簧函数调用接口
" q' _5 u# a% ^: X6 ?) U - ;;;
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9 k7 T1 z* Q. }: q6 b: A- (defun C:3DSPRING (/ olderror cmdch blpmd cntPt RottCnt horiGrw vertGrw bgnRdtn ptCntPerCircle) ( i: x ]/ g3 \+ k- G6 f. E1 p
- (setq cmdch (getvar "cmdecho")) ; 获取cmdecho值，以便调用结束后恢复2 V" _: n/ x7 h9 `% I
- (setq blpmd (getvar "blipmode")) ; 获取blipmode值，以便调用结束后恢复& |* U5 f. }; R6 h9 M* l- n
- (setvar "cmdecho" 0) ; 关闭 cmdecho
8 b, a- `4 t5 s2 o - (initget 1) ; cntPt 必须非空
/ k% D' r* { \# H# B3 [* y8 m - (setq cntPt (getpoint "
$ J8 v5 F# [% L$ k5 [ - 请输入底部中心点: "))+ H. p3 q0 p* j8 B+ O& l
- (initget 7) ; RottCnt 必须非零、非空,不可忽略
4 a$ E( g) v: c5 p) B - (setq RottCnt (getint "( r0 W8 Q0 m; B+ \9 F
- 旋转的圈数: ")) o7 c& d7 R. ?% L& l3 w `
- (initget 7) ; bgnRdtn 必须非零、非空,不可忽略
) g2 w4 Q7 ]$ a2 n! b9 S - (setq bgnRdtn (getdist cntPt "5 j% ?! W. ]; X
- 起始半径: "))' \9 h# V. R* A" g7 L7 X
- (initget 1) ; cf 必须非零、非空
: y" a! u4 q! `8 D' x# r - (setq horiGrw (getdist "" ?: _6 M# g' h8 ?4 p$ p5 w6 D
- 每一圈的水平增长距离: "))" D& ^( v2 n3 z7 n i
- (initget 3) ; cf 必须非零、非空
0 U- A, Q b/ ~ - (setq vertGrw (getdist "
N3 }: w2 C) c - 每一圈的垂直增长距离: "))' C" @. t% }7 b$ I
- (initget 6) ; ptCntPerCircle 必须非零、不可忽略- S+ k9 q- B% ?) P. _0 }
- (setq ptCntPerCircle (getint "
7 N5 P |) g: w0 a( r5 A" [ - 每一圈的插值点数<35>: "))
8 G. A0 A: u. Y2 U, g) y - (cond ((null ptCntPerCircle) (setq ptCntPerCircle 35))) & ]9 d6 Y- `% @$ H L% e& P
- (spring RottCnt cntPt horiGrw ptCntPerCircle bgnRdtn vertGrw)! `# \9 C( R) I& U
- (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值
/ t V B e" ^ - (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值
- } U% h) |1 x8 L+ s0 v5 _" n - (setq *error* olderror) ; Restore old *error* handler
8 P+ O2 h, s! V. c5 ]( ] P7 q - (princ): Y0 j S3 w2 l2 A( _ C% h
- / [" `1 Q+ V1 b$ \; M
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发表于 2010-3-13 11:12
楼主