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弹簧源程序2 l. f5 B7 p, {4 l
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- (defun errMsg (s) ; 当命令执行时出现错误 , ~0 C# G! Y" W
- ; 例如用户按下了CTRL + C8 E+ y6 W/ D; @7 C5 ^
- (if (/= s "Function cancelled")& O, @1 E. s- {$ T' w4 a% g- u
- (princ (strcat "
i+ ^* _: p3 U2 a3 K5 w- s( L - Error: " s))) U- h# x, }7 e" v: ~
- )5 K6 [7 l! r5 ?$ K. @0 O! k5 [
- (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值$ l9 {! F% T$ d. `2 R# |
- (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值; T, C6 ]- \% T5 E! Z6 S
- (setq *error* olderror) ; 恢复旧的错误处理- R, q# v& b$ U$ W1 R9 _, K9 {: s; R
- (princ)
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- (defun spring (nRepeat cntPoint bhfac lr strad bvfac
' l$ n; t- N5 A - / angle distnc tp aGrw dhGrw dvGrw Pi2 dv)( Z9 ~7 U* S$ i' j: \
8 ~: ^5 C8 ?/ ~5 Y9 G- (setvar "blipmode" 0) ; 关闭 blipmode
" _9 j# L4 V# b z - (setvar "cmdecho" 0) ; 关闭 cmdecho. c3 d5 c, d& o; ]% X) R& w
- (setq Pi2 (* 3.14159265 2))7 x d, K# _/ J
- (setq aGrw (/ Pi2 lr))
7 D! k3 Y8 w8 O! m! k - (setq dhGrw (/ bhfac lr))
# P V. s a7 z" u. w4 y( X; Z, z - (if bvfac (setq dvGrw (/ bvfac lr)))$ M/ f3 S8 c- F
- (setq angle 0.0)
, ?5 W6 |1 U6 O: L" Y0 g$ | - (if bvfac
% G9 [3 i& F& ~+ {) B8 j9 r - (setq distnc strad dv 0.0). d; V4 S/ ?4 a8 J8 i+ v4 l
- (setq distnc 0.0)
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- (if bvfac ' ]6 r" \' p4 M
- (command "3dpoly") ; 开始绘制弹簧3 n( [7 B3 I# B7 ^: O g
- (command "pline" cntPoint) ; 从基点开始绘制弹簧
+ G; z" B1 B* }9 | - )
) s ~$ p g# _3 F - (repeat nRepeat 2 ?* s" L: H+ X, R/ Y! U* a
- (repeat lr
1 k9 e, w# @5 h/ G1 Z+ P5 \; l - (setq tp (polar cntPoint (setq angle (+ angle aGrw))
# l, |9 ~% m2 M" W& K9 B( t - (setq distnc (+ distnc dhGrw))
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- )
, S1 Y0 {6 M+ ^) w - (if bvfac
2 P4 O, g6 z, P* v& d0 G5 x6 L7 ` - (setq tp (list (car tp) (cadr tp) (+ dv (caddr tp)))
' b8 r, X3 K" v8 _, i4 ^ - dv (+ dv dvGrw); G$ W4 P. e8 g8 l! U
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- (command tp) ; 继续输入下一点
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- )
! D3 N# k% E) K& K& x - (command "") ; 输入结束
8 t8 v) b" O1 ~. B, I. Z4 V& K - (princ)
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- ;;;
( {" f) b+ c6 e! [ - ;;; 生成三维弹簧函数调用接口! N% Y6 \3 [& l! Q+ g; ], D
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$ X% w! t) j4 ^$ A+ V& w- (defun C:3DSPRING (/ olderror cmdch blpmd cntPt RottCnt horiGrw vertGrw bgnRdtn ptCntPerCircle)
}2 N" v* h1 ]7 C - (setq cmdch (getvar "cmdecho")) ; 获取cmdecho值，以便调用结束后恢复
" B7 X% t1 d! [: J5 V1 a. V - (setq blpmd (getvar "blipmode")) ; 获取blipmode值，以便调用结束后恢复
0 t4 d; w+ ]& ^6 l5 H- G - (setvar "cmdecho" 0) ; 关闭 cmdecho
% Q/ o& n9 L1 y- P4 S E - (initget 1) ; cntPt 必须非空
9 M. \" |3 o4 @0 ^ - (setq cntPt (getpoint "
% b/ O6 a$ A8 G, w" ^; g: C - 请输入底部中心点: "))
( @: c8 K1 V# ? - (initget 7) ; RottCnt 必须非零、非空,不可忽略
* z/ ?) V2 G' v* h - (setq RottCnt (getint "( f' o. ]/ y. y! w( ^
- 旋转的圈数: "))
( o& F! c( X( M" [- [! i - (initget 7) ; bgnRdtn 必须非零、非空,不可忽略/ k, |; J0 C6 l+ S6 J- r
- (setq bgnRdtn (getdist cntPt ") y; F% a$ i( f8 C& E# c; V
- 起始半径: "))
+ G b" v% D6 \8 g8 R - (initget 1) ; cf 必须非零、非空6 c2 U9 K$ K) o
- (setq horiGrw (getdist "1 h1 |' o9 b. ], E+ q& l( o
- 每一圈的水平增长距离: "))# T4 e2 v' ]0 }0 P( v
- (initget 3) ; cf 必须非零、非空
8 {$ f. \) \ H - (setq vertGrw (getdist "3 }5 V% y; J; W5 I4 G
- 每一圈的垂直增长距离: "))
6 o! x5 e6 Q3 A# w" F; m3 C# T - (initget 6) ; ptCntPerCircle 必须非零、不可忽略' F7 \- v" ~1 m
- (setq ptCntPerCircle (getint "
/ e; b3 `; O4 c* B* ^ - 每一圈的插值点数<35>: "))! o2 z( d. u' a: _* d
- (cond ((null ptCntPerCircle) (setq ptCntPerCircle 35))) 6 g8 h, b |% S! V: M
- (spring RottCnt cntPt horiGrw ptCntPerCircle bgnRdtn vertGrw): X0 G1 t- C0 }6 q( L, V c1 Q
- (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值5 ]7 f$ W2 @% N; Y
- (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值
0 T. Z5 S7 o, ?) v8 Z - (setq *error* olderror) ; Restore old *error* handler
. H/ O8 t. {5 Z0 Y7 M - (princ); r3 o% [# O% B' _
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发表于 2010-3-13 11:12
楼主