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弹簧源程序% ~* n& j9 a7 ?# u
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- (defun errMsg (s) ; 当命令执行时出现错误
3 G, |* n+ W- m8 Y1 R! K - ; 例如用户按下了CTRL + C- p+ u1 B$ h9 K) M U
- (if (/= s "Function cancelled")% u" E. O5 b# D; Q% h
- (princ (strcat "; g5 G$ b& F/ j# A, D Y+ F
- Error: " s))
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- (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值
5 o' ^/ A2 X1 J$ ` - (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值
. z4 g3 E2 E2 C- T( ~/ C# r# f - (setq *error* olderror) ; 恢复旧的错误处理& J$ v" z9 e, A h6 D& v" O
- (princ)
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% k, ?3 J: O/ f: b# o- (defun spring (nRepeat cntPoint bhfac lr strad bvfac0 V+ a3 x* Z# k. q
- / angle distnc tp aGrw dhGrw dvGrw Pi2 dv)
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3 d* u6 H- ~0 ]! N: |- h- (setvar "blipmode" 0) ; 关闭 blipmode
$ Q6 d6 H' W9 r; v - (setvar "cmdecho" 0) ; 关闭 cmdecho2 t; L) V9 _; V. R6 p5 Z7 O. M
- (setq Pi2 (* 3.14159265 2))
8 c* C( d2 I) n5 O - (setq aGrw (/ Pi2 lr))
. d: k, t5 ]7 t* Q k! o - (setq dhGrw (/ bhfac lr)). A& h( J- M0 D( R- ~& {. f* `
- (if bvfac (setq dvGrw (/ bvfac lr)))8 T1 W8 M" T v! y1 L5 O5 l
- (setq angle 0.0)! z/ K/ `- X( n' J' f
- (if bvfac
4 @ y4 J: ] |3 _& k5 x8 v - (setq distnc strad dv 0.0)
9 o+ L- X* K1 [0 G; n7 d - (setq distnc 0.0)! O5 V* B" d3 z$ a+ B8 [6 v
- )$ s5 Q4 l, T$ y' i ?
- (if bvfac
8 i$ g- o; z6 J' C - (command "3dpoly") ; 开始绘制弹簧5 e# |/ U! t" y: n' ]
- (command "pline" cntPoint) ; 从基点开始绘制弹簧! N" T) F b5 e& J% C# P
- )
7 r) o' t9 G3 }; r, | - (repeat nRepeat
1 B$ P' L1 X! f& o - (repeat lr 7 s6 `1 x/ x" r7 b
- (setq tp (polar cntPoint (setq angle (+ angle aGrw)). ^* p; i7 i( j6 m: z
- (setq distnc (+ distnc dhGrw))
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- )% j, f! P; I" v* i1 ~
- (if bvfac' _ H2 M8 i. A) p" ?6 c* A
- (setq tp (list (car tp) (cadr tp) (+ dv (caddr tp)))- t% X$ y, [" J; L- f t, T C
- dv (+ dv dvGrw)6 Q8 q8 p$ c! b, {; S! R. T; C
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- )
8 D/ e- K8 r o& j2 \) d2 w - (command tp) ; 继续输入下一点5 ~! o5 Z6 X5 W) s0 U6 Z
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5 l- L5 c" C' n) h8 A: T7 v - (command "") ; 输入结束
1 J- n, I5 N4 t0 s d0 O, P1 W - (princ)2 E( D N( t8 N' X7 l0 O
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- ;;; 生成三维弹簧函数调用接口. u1 Z0 [" M( M! j
- ;;;
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- (defun C:3DSPRING (/ olderror cmdch blpmd cntPt RottCnt horiGrw vertGrw bgnRdtn ptCntPerCircle)
. Q& h& K# H2 l# p: _* s - (setq cmdch (getvar "cmdecho")) ; 获取cmdecho值，以便调用结束后恢复
! b/ b2 @2 T, M z - (setq blpmd (getvar "blipmode")) ; 获取blipmode值，以便调用结束后恢复
1 w- x9 A- m4 y- s - (setvar "cmdecho" 0) ; 关闭 cmdecho ( G; ~8 p) m, A) }% x7 }. j% I% v
- (initget 1) ; cntPt 必须非空
9 H, T, {& @# s5 b1 |7 f& H - (setq cntPt (getpoint "
# o/ i& Z7 }, v - 请输入底部中心点: "))6 w& V6 X% m9 s) N
- (initget 7) ; RottCnt 必须非零、非空,不可忽略- ]! G5 K6 K2 O1 L, L" c) Q
- (setq RottCnt (getint "" d0 f' i T X. a) v* o* t4 _
- 旋转的圈数: "))" ?( g% y' ]/ l% }0 d6 P4 Z4 [$ p
- (initget 7) ; bgnRdtn 必须非零、非空,不可忽略# l+ _% n0 M2 y! r
- (setq bgnRdtn (getdist cntPt "$ A- _- X1 R2 s# K2 \1 X( ]
- 起始半径: "))
6 e: s$ c) V& Q - (initget 1) ; cf 必须非零、非空
a& g, R6 b( h9 [' b4 f - (setq horiGrw (getdist "' Q, l0 g7 B9 `! s0 s3 L, R$ L2 F( c; N
- 每一圈的水平增长距离: "))5 ? Y0 c% h7 I6 D8 {* U" `) _/ w
- (initget 3) ; cf 必须非零、非空
4 @7 m' u; t8 G: s3 i- } - (setq vertGrw (getdist ". v2 |6 Z; _- V! {' D. \
- 每一圈的垂直增长距离: "))0 `9 W# {1 I# F5 Y- f T! {$ Q
- (initget 6) ; ptCntPerCircle 必须非零、不可忽略
" ]0 R4 d I [- B - (setq ptCntPerCircle (getint "2 t9 q7 K" C2 R, P1 O! W& Z
- 每一圈的插值点数<35>: "))
T+ m+ b" I3 j! p% Z0 v! d - (cond ((null ptCntPerCircle) (setq ptCntPerCircle 35)))
# L/ g" Y& t2 F( l, I9 g! B - (spring RottCnt cntPt horiGrw ptCntPerCircle bgnRdtn vertGrw), f8 a- R7 _. V, e: \
- (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值
0 \; S7 _% B2 t- Z h2 z, H - (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值$ x" z% Z+ {' H {
- (setq *error* olderror) ; Restore old *error* handler! O K# f+ X2 o' N
- (princ)4 }0 h; I I6 a9 i# _8 \$ {) g
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发表于 2010-3-13 11:12
楼主