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(defun errMsg (s) ; 当命令执行时出现错误
: A) m0 j O' O ; 例如用户按下了CTRL + C/ }9 D4 t ]" V/ T8 m/ p3 Z
(if (/= s "Function cancelled")
$ b. N6 M. L' L# N$ s (princ (strcat "\nError: " s))0 F& J( \5 z" z. o) X
)+ { f& ?( `" {9 t& k% ~
(setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值2 v) R$ d1 k6 ^& U( X: _
(setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值: h$ ]3 b J+ P- y" A
(setq *error* olderror) ; 恢复旧的错误处理6 ~1 n) X7 ?) Q" O/ s" a z/ ?
(princ)/ \& y( ?! p# Q ?, n
)
4 P( P0 R, `. T; d2 `3 y) {(defun spring (nRepeat cntPoint bhfac lr strad bvfac$ Q& h+ R4 p7 [
/ angle distnc tp aGrw dhGrw dvGrw Pi2 dv)
. s5 D, q6 v/ N (setvar "blipmode" 0) ; 关闭 blipmode 4 c* W! N5 x2 S I* G* y) v, ~2 V
(setvar "cmdecho" 0) ; 关闭 cmdecho
( n2 M5 R" c1 ^ (setq Pi2 (* 3.14159265 2))
7 R% a. D+ `. i' _ (setq aGrw (/ Pi2 lr))- u& ^2 V" m' Z2 h$ a) R& u! P: r5 g
(setq dhGrw (/ bhfac lr))2 Z3 I( O$ o4 h m- N
(if bvfac (setq dvGrw (/ bvfac lr)))3 `$ u0 z! `& D
(setq angle 0.0)" f% W/ z; ~& A& K9 d: d) l
(if bvfac: T! \1 d+ n: y. e+ ~1 ?
(setq distnc strad dv 0.0)0 B, Y% I$ K) ?- g R2 j
(setq distnc 0.0)$ r8 p3 o; O, Z M
), x7 I. I' D2 S: l- O' k9 a
(if bvfac & [. \5 Y) |; v* G5 v
(command "3dpoly") ; 开始绘制弹簧0 @- U6 O; A1 Z& ^1 F
(command "pline" cntPoint) ; 从基点开始绘制弹簧. y; g; h2 {+ _1 ~
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(repeat nRepeat
_9 V: c8 x1 s) X% _9 B0 J9 d (repeat lr / q5 U$ {3 M( }: \5 Q
(setq tp (polar cntPoint (setq angle (+ angle aGrw))5 r! s& O' {" o
(setq distnc (+ distnc dhGrw))
9 _& J7 ?1 z2 E5 V Q# n6 M )
0 h9 a' M" \8 L! @1 b9 N6 {/ G ) A/ |' D" F- l9 j. n8 i
(if bvfac
$ c+ _+ m; }! U- ?3 S (setq tp (list (car tp) (cadr tp) (+ dv (caddr tp))) I, e( e# f. b, l% L! R
dv (+ dv dvGrw)2 \" a+ ?# s/ i4 K( v
)
" g' F+ I6 b3 w% U# y- p4 z4 P+ c+ V )
% e+ V9 t3 R1 ~3 ?1 U, D (command tp) ; 继续输入下一点
3 r' C6 _& j5 q. P5 Z& a& T. | )
. Z5 h% p. z4 V; J ) ! X. P% P4 D" } j% d
(command "") ; 输入结束6 m: G& z. j7 e8 t: v$ v
(princ)
1 B$ L2 M: d5 Z5 q9 V! Z) . h- e% d2 f" t) X3 u, x% J
;;;
7 ~) ?" C, q& A9 h/ a;;; 生成三维弹簧函数调用接口
4 W5 u, g- f' z- @+ E8 Z/ P;;;2 {, m2 Q% M. y) e
(defun C:3DSPRING (/ olderror cmdch blpmd cntPt RottCnt horiGrw vertGrw bgnRdtn ptCntPerCircle) 3 E, {! g/ P& f8 \
(setq cmdch (getvar "cmdecho")) ; 获取cmdecho值，以便调用结束后恢复4 v$ L, H4 O1 D9 r3 M! a4 o
(setq blpmd (getvar "blipmode")) ; 获取blipmode值，以便调用结束后恢复
) C* h/ S' E& {. j5 B' o+ | (setvar "cmdecho" 0) ; 关闭 cmdecho ) t4 n$ O, I; g5 s) A* F) \
(initget 1) ; cntPt 必须非空0 ? L+ D; ?; y0 ~$ r& o* t" `' d
(setq cntPt (getpoint "\n请输入底部中心点: "))7 v' K, g3 ~3 C5 j: S2 j+ z) G
(initget 7) ; RottCnt 必须非零、非空,不可忽略
; V5 f. ~; P* @3 t+ G* i* v2 v (setq RottCnt (getint "\n旋转的圈数: "))
5 N. u( V5 C9 R4 R( B (initget 7) ; bgnRdtn 必须非零、非空,不可忽略
5 K$ t9 ~% r: a4 P) x (setq bgnRdtn (getdist cntPt "\n起始半径: "))
0 l, S3 J/ q4 Y) J (initget 1) ; cf 必须非零、非空( q9 b3 ]4 z# M5 M1 h1 A, X
(setq horiGrw (getdist "\n每一圈的水平增长距离: "))' V( h/ o6 w8 Z$ I- U
(initget 3) ; cf 必须非零、非空
; S/ c% Y1 N4 O- c0 \ ^0 W8 D (setq vertGrw (getdist "\n每一圈的垂直增长距离: "))* q. M% U5 }$ w" \
(initget 6) ; ptCntPerCircle 必须非零、不可忽略
* J' |8 K" m A& X (setq ptCntPerCircle (getint "\n每一圈的插值点数<35>: "))9 i- v- f/ d5 U5 |2 L
(cond ((null ptCntPerCircle) (setq ptCntPerCircle 35)))
% V' N+ u+ v! A& Z) O0 b (spring RottCnt cntPt horiGrw ptCntPerCircle bgnRdtn vertGrw)5 m8 Q$ w' I5 D0 M: K5 I
(setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值$ A6 e: h! a/ ?. m! a s2 x* H# V$ J* [ @
(setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值
0 t8 J! Z4 F6 E# N) w: U% [5 V (setq *error* olderror) ; Restore old *error* handler
. f; V2 z( G! S; } (princ)
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发表于 2007-2-27 20:32:35
