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(defun errMsg (s) ; 当命令执行时出现错误
$ q: u5 d1 |1 O$ j/ j9 U' C0 v ; 例如用户按下了CTRL + C
7 `8 w: u% @. G6 z7 M (if (/= s "Function cancelled")8 g1 x1 A7 n$ u! A
(princ (strcat "\nError: " s))$ {6 [! M$ e: W6 G3 j5 c" | A
)% y; |* ]0 @# V9 Z& ~0 \7 ^/ \
(setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值: c5 D9 d% @0 |- [0 I5 G5 [
(setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值6 u) [0 J7 j& [' d$ |9 w7 T) W* X
(setq *error* olderror) ; 恢复旧的错误处理
) N, L8 Y' p- s6 F% U; s (princ)2 t" l4 u' b6 I6 _, C+ E ?
)
! P; O* Q s6 U( S+ y$ u(defun spring (nRepeat cntPoint bhfac lr strad bvfac+ J9 _* w1 Y! J* f! }/ N5 ?
/ angle distnc tp aGrw dhGrw dvGrw Pi2 dv)
* M/ j; E6 T$ q3 k: b (setvar "blipmode" 0) ; 关闭 blipmode 3 q/ ^" [: X; F0 C
(setvar "cmdecho" 0) ; 关闭 cmdecho
) L" H0 m8 E9 R; d4 o7 B (setq Pi2 (* 3.14159265 2))( V* Q) Z7 F- _9 S' o( D
(setq aGrw (/ Pi2 lr)) w. W# j5 u, w$ D' U/ U
(setq dhGrw (/ bhfac lr))) _- F. ~* ]( O. ?, E
(if bvfac (setq dvGrw (/ bvfac lr)))
) t9 A, B* e1 C, A" ?! F (setq angle 0.0)
& A) y b" o% N* m8 D% m (if bvfac6 ]4 }: [' x6 I; f# P, x
(setq distnc strad dv 0.0)
/ D1 [- g: w0 Y1 w (setq distnc 0.0)
i! P/ U8 D$ g. \6 y5 ? ); Z1 n1 b6 Q1 X2 J+ B2 u
(if bvfac , L: t, j- S0 K. U4 K
(command "3dpoly") ; 开始绘制弹簧; c/ Q+ _; E7 }, j# x
(command "pline" cntPoint) ; 从基点开始绘制弹簧8 E% y( S$ ^0 [' n2 B0 |, V) D) l
)
3 w5 m" p+ r& K# o8 J4 h (repeat nRepeat . F' ]5 T0 w I/ f3 \* S/ q
(repeat lr
V' l; z0 h* s& D% X (setq tp (polar cntPoint (setq angle (+ angle aGrw))- [0 X! V, w( K8 ^0 Q' \1 a0 U4 Z
(setq distnc (+ distnc dhGrw))
) }, o3 _( r9 c6 Z X) x9 E )
( g! U# N9 P# | t" ~ )
9 ?% D. z* w; ^9 c (if bvfac
& a7 e( ? ?# m. o- _ (setq tp (list (car tp) (cadr tp) (+ dv (caddr tp)))
: a/ b; z: w3 T2 e4 u4 _8 s* J dv (+ dv dvGrw)
( u) f l/ V4 Z* l ), @6 n4 @% \5 E
): @0 ]% u! G0 z" W7 W
(command tp) ; 继续输入下一点
6 a4 U+ ?3 \+ G) d- ] )7 R/ M8 R, q. h+ H9 I& D/ p9 k
) 2 L) l: E. ^& g9 G4 T2 V
(command "") ; 输入结束( f' Z& m3 u3 Q/ K
(princ)- `7 ~ }' h7 a0 L1 ]9 u
)
% M+ `2 m3 p+ M; f+ `# R; W;;;( l: o* R! g# [- U5 M
;;; 生成三维弹簧函数调用接口
+ c ]& g/ J9 `) x;;;
3 q2 C+ ]6 u5 K! H: A(defun C:3DSPRING (/ olderror cmdch blpmd cntPt RottCnt horiGrw vertGrw bgnRdtn ptCntPerCircle) # Q" W' E1 {) @' Z
(setq cmdch (getvar "cmdecho")) ; 获取cmdecho值，以便调用结束后恢复
! m5 x% Z$ s; p3 i* y! V (setq blpmd (getvar "blipmode")) ; 获取blipmode值，以便调用结束后恢复
* q% R) H, O T, s, U b (setvar "cmdecho" 0) ; 关闭 cmdecho
& N* @" p+ d9 o9 W (initget 1) ; cntPt 必须非空( w2 c# p7 Z6 G7 P6 Q
(setq cntPt (getpoint "\n请输入底部中心点: "))" l; L) M, q, p$ X
(initget 7) ; RottCnt 必须非零、非空,不可忽略
3 u' K3 G" S& A6 N9 p- U$ A (setq RottCnt (getint "\n旋转的圈数: "))
. x6 P0 D9 S6 M: w: m- J (initget 7) ; bgnRdtn 必须非零、非空,不可忽略
' J2 i2 X4 N6 D# e4 t (setq bgnRdtn (getdist cntPt "\n起始半径: "))5 F6 X l8 W4 r- f# J
(initget 1) ; cf 必须非零、非空
2 l( q9 l3 ~, q; D (setq horiGrw (getdist "\n每一圈的水平增长距离: "))' _& t! r4 Y3 G; ~0 N: w6 [
(initget 3) ; cf 必须非零、非空( N" x0 ?0 b& f8 w1 C
(setq vertGrw (getdist "\n每一圈的垂直增长距离: "))8 X. L& @/ E2 K$ a( ^
(initget 6) ; ptCntPerCircle 必须非零、不可忽略
9 S! v. H/ i$ D+ l7 I5 k# L/ T. Q (setq ptCntPerCircle (getint "\n每一圈的插值点数<35>: "))
% l0 P/ j6 }4 f% M& A (cond ((null ptCntPerCircle) (setq ptCntPerCircle 35))) . ]' v, o! A5 O. g
(spring RottCnt cntPt horiGrw ptCntPerCircle bgnRdtn vertGrw)5 k8 A+ [2 s' o: @1 n0 V: V: r
(setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值
" t2 H/ _/ j* A4 [; d5 u. q (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值$ ^' B3 R- A t3 n
(setq *error* olderror) ; Restore old *error* handler' g* ~" Q/ V; K
(princ) D/ U6 I/ V: w+ a, s
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发表于 2007-2-27 20:32:35
