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(defun errMsg (s) ; 当命令执行时出现错误 . H' X5 i8 Z: Z8 M: M# h* L) p
; 例如用户按下了CTRL + C4 X2 a* V2 r* U+ V: T
(if (/= s "Function cancelled")
; Q: x8 L _% F5 m% ? (princ (strcat "\nError: " s))
* C& `+ l+ M# H+ j5 r, s& r! t )
& f" I% ]( {# q1 r (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值3 n- x+ w+ D' E8 b4 Y$ C5 [' Q
(setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值
9 l- T3 K! ^% x ] (setq *error* olderror) ; 恢复旧的错误处理9 u7 o6 {7 M! w/ F
(princ)+ }! U+ b. v" H. M: j1 S V& }. T
). V4 h5 S9 W- c! A h' [' z. f
(defun spring (nRepeat cntPoint bhfac lr strad bvfac
4 w: x: D% e z, `8 @ / angle distnc tp aGrw dhGrw dvGrw Pi2 dv)6 }! Y( F5 n4 e9 b* \5 z8 }
(setvar "blipmode" 0) ; 关闭 blipmode
5 I+ a" n, X2 N (setvar "cmdecho" 0) ; 关闭 cmdecho$ f( B+ Y3 w& [9 T
(setq Pi2 (* 3.14159265 2))
' f' b6 V6 _" C& h- _; \. | (setq aGrw (/ Pi2 lr))+ ^* z5 w, j4 q4 |/ F
(setq dhGrw (/ bhfac lr))4 p) G m* ]% h1 ^( Z- c3 L
(if bvfac (setq dvGrw (/ bvfac lr))); c: K+ Y2 y, p% [; t
(setq angle 0.0)/ i# _7 ~9 i2 e2 `( S" y% ?
(if bvfac2 a7 T8 I4 Z7 C& X
(setq distnc strad dv 0.0)! M9 A- Z1 c0 P5 I
(setq distnc 0.0)
( \ n: b( C% [+ K- v# B: S )/ [6 k1 |5 A3 }0 p/ d/ z3 a. |
(if bvfac 0 `3 L9 A$ O$ H0 W, p% P
(command "3dpoly") ; 开始绘制弹簧/ U8 j [! E0 B% f) Z4 ~
(command "pline" cntPoint) ; 从基点开始绘制弹簧# v2 I( B& @8 q. F; k4 f
)
1 t$ N/ x+ h9 x8 [8 I o (repeat nRepeat
, r* I, }' |7 m( {1 x0 n (repeat lr # w$ }/ L: `. u! o: I2 s, {& K
(setq tp (polar cntPoint (setq angle (+ angle aGrw)); \3 U4 M$ @7 @0 Q
(setq distnc (+ distnc dhGrw))3 i z. |, ~3 z2 z) M; H
)
- Y0 {0 ]) O+ f- n- S )1 v6 \& J% b, W: v4 A) T- x7 I
(if bvfac9 g3 ^# U& X/ w
(setq tp (list (car tp) (cadr tp) (+ dv (caddr tp)))" I( {* p( Y+ y2 w# Z: U
dv (+ dv dvGrw)5 n, i& i, _' }7 n: o8 b
)
' R+ N3 w% b `/ i) y5 N )
6 D1 R6 p' }( i# i6 K+ V8 ]# X (command tp) ; 继续输入下一点9 T1 n! I5 G1 Q
); V% }% A8 z7 Y; p; _ T0 K& C
) . I% G8 t- i B4 q! W+ [3 |
(command "") ; 输入结束- R& ^+ |3 C/ T3 e4 X
(princ)
1 V. ^: B( V2 Q4 A- G)
5 v: J% l2 t- c( P# i% v;;;9 m& g. D* t; T h3 F' D: Q( ~- I
;;; 生成三维弹簧函数调用接口
, C; o8 d: `' m- Q+ D+ n;;;+ z8 }1 @2 ?3 ?3 G" [" D1 ~' N
(defun C:3DSPRING (/ olderror cmdch blpmd cntPt RottCnt horiGrw vertGrw bgnRdtn ptCntPerCircle)
& c5 Z+ |, ]: i' N: F) y) p (setq cmdch (getvar "cmdecho")) ; 获取cmdecho值，以便调用结束后恢复- v) _2 M0 {* s, n# _
(setq blpmd (getvar "blipmode")) ; 获取blipmode值，以便调用结束后恢复
2 u. o1 u" d) c. @ (setvar "cmdecho" 0) ; 关闭 cmdecho
, t( x% \5 h: O- d6 W( [0 N (initget 1) ; cntPt 必须非空. Z1 O1 f( m+ D, `8 s
(setq cntPt (getpoint "\n请输入底部中心点: "))/ p2 o' c& f" h9 ^! G0 x
(initget 7) ; RottCnt 必须非零、非空,不可忽略
[7 Y) Y# p' ` (setq RottCnt (getint "\n旋转的圈数: "))
# [. `, s. l- A/ ~ (initget 7) ; bgnRdtn 必须非零、非空,不可忽略) r* k- V7 t( {! G
(setq bgnRdtn (getdist cntPt "\n起始半径: "))
' [: y7 G( V+ ^" }. ^& M- j' x (initget 1) ; cf 必须非零、非空# ]# |& f- f4 Q/ p/ i$ v6 ?+ C" A+ S
(setq horiGrw (getdist "\n每一圈的水平增长距离: "))5 X& d4 R4 `& D1 I
(initget 3) ; cf 必须非零、非空
9 g8 I0 m1 @1 @5 C$ Z (setq vertGrw (getdist "\n每一圈的垂直增长距离: "))- Q. ^+ e9 p1 L/ P
(initget 6) ; ptCntPerCircle 必须非零、不可忽略( ~: ?7 e& ^9 s/ _
(setq ptCntPerCircle (getint "\n每一圈的插值点数<35>: "))
' @/ T. L- e" `, B (cond ((null ptCntPerCircle) (setq ptCntPerCircle 35)))
$ L1 X; O/ {* s+ ]8 }$ q3 w/ v (spring RottCnt cntPt horiGrw ptCntPerCircle bgnRdtn vertGrw), \1 n0 {1 U- J2 z
(setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值! m' ?; I. ?2 T8 K- [
(setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值" N$ r# _# a( C3 W9 R
(setq *error* olderror) ; Restore old *error* handler5 @ _ e! g" ^+ D. G
(princ)8 Y+ F+ M4 G- O
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发表于 2007-2-27 20:32:35
