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(defun errMsg (s) ; 当命令执行时出现错误 & w7 y3 r: e/ M7 l. s
; 例如用户按下了CTRL + C
, Z1 P0 o9 U @/ E2 `/ O T V: m2 b/ ^, ~ (if (/= s "Function cancelled")
# j5 a z6 }0 o4 I (princ (strcat "\nError: " s))
* h" {& [' M! ^& `1 G )
6 s& n6 l' D$ x& R1 ~2 s; z (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值7 E% L: z% W) X4 C& Q
(setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值: s% @- o# o4 H# a
(setq *error* olderror) ; 恢复旧的错误处理: u4 ?8 M( |, T* M1 U7 C
(princ)
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+ M+ ?9 Y; i! l& u3 ` T(defun spring (nRepeat cntPoint bhfac lr strad bvfac. h( w2 S6 E# |0 `$ e
/ angle distnc tp aGrw dhGrw dvGrw Pi2 dv). m+ ^& }8 I' l- q6 ?$ {
(setvar "blipmode" 0) ; 关闭 blipmode
" S& [' f& S1 z! r( o5 d( n, D (setvar "cmdecho" 0) ; 关闭 cmdecho
0 l( f9 d+ Z- y2 P. g4 }! Q. K" p (setq Pi2 (* 3.14159265 2))
7 ~& `" k2 F+ L0 H& N! @ (setq aGrw (/ Pi2 lr))
* D. v7 h; e* p$ ]! R5 t* a (setq dhGrw (/ bhfac lr))0 o. f# y. H7 w# y- Q1 H% J- J+ y( `( w3 t
(if bvfac (setq dvGrw (/ bvfac lr)))
5 M3 `6 D; r6 g0 l+ j- M+ U (setq angle 0.0)
9 w# M* I. k. c2 D N* M% G (if bvfac4 ^) V4 A5 M- c+ }
(setq distnc strad dv 0.0)& {" {# f$ f# w
(setq distnc 0.0)/ E* A9 J$ F/ ^% A9 i; D6 N
), Q' \( o7 L8 ~/ A8 X3 N
(if bvfac 2 p$ Q/ H3 j, l$ L6 E
(command "3dpoly") ; 开始绘制弹簧, c- W+ A! g2 |; Z4 {) d
(command "pline" cntPoint) ; 从基点开始绘制弹簧
6 K& O! Y4 F- h1 M) \: C8 r7 G# f! I )
8 x" |* A, s% k7 s2 l5 s+ Q/ F (repeat nRepeat " }( _0 A& _) \% D% F
(repeat lr
* K& l/ r5 F; b( q: l. S w2 ~ (setq tp (polar cntPoint (setq angle (+ angle aGrw))
& I* |" C3 P" |' O' \$ M (setq distnc (+ distnc dhGrw))) [0 A6 o: t$ A; _/ f1 b
)( W0 O9 [+ @, F9 n8 q( p3 E \
), B* y) O2 I! y
(if bvfac( y2 E1 K$ }5 s0 V4 a7 [! G
(setq tp (list (car tp) (cadr tp) (+ dv (caddr tp)))3 P# O2 S/ b+ Q; V7 F
dv (+ dv dvGrw)+ K$ y& a9 Q, _2 ?4 }
), f/ k$ U9 _9 { o7 D) t
)
9 w5 b1 {4 f1 D ` (command tp) ; 继续输入下一点$ A4 n5 s2 t! i6 K7 E
)& q2 i" G8 S. }; ]+ O$ v, G6 a
) 2 L$ l0 p% G2 i* A @" _
(command "") ; 输入结束
' L) z E- U# n$ j5 V (princ)
% D! \, Z) E, H0 v)
% y# |2 o3 }9 ?6 U;;;
d& ^+ T/ H( D5 A& L: E F- B;;; 生成三维弹簧函数调用接口& n' {; e& y! l% L& |( F9 P) |
;;;, s0 Q! f q1 D3 h* W" z/ B6 K3 i6 S
(defun C:3DSPRING (/ olderror cmdch blpmd cntPt RottCnt horiGrw vertGrw bgnRdtn ptCntPerCircle)
& x" }$ {* _( b- W$ } (setq cmdch (getvar "cmdecho")) ; 获取cmdecho值，以便调用结束后恢复; m |/ G$ v( y2 d" ]1 n& B
(setq blpmd (getvar "blipmode")) ; 获取blipmode值，以便调用结束后恢复9 s6 Y7 {; U' U
(setvar "cmdecho" 0) ; 关闭 cmdecho
4 L- V! V5 {) S3 {5 O* N9 h (initget 1) ; cntPt 必须非空
6 P& q( p1 j6 Y0 q" @/ P# t (setq cntPt (getpoint "\n请输入底部中心点: "))
% T& X8 r6 d8 Q (initget 7) ; RottCnt 必须非零、非空,不可忽略
7 M' I! ~ @2 T (setq RottCnt (getint "\n旋转的圈数: "))8 s/ d ?7 g7 m( H7 b5 T" K& G
(initget 7) ; bgnRdtn 必须非零、非空,不可忽略
" S) d1 M- l; O (setq bgnRdtn (getdist cntPt "\n起始半径: "))' v$ H6 y+ s2 I8 n Y
(initget 1) ; cf 必须非零、非空. U: p% M9 I, y" }% w2 e
(setq horiGrw (getdist "\n每一圈的水平增长距离: "))3 j+ [5 t7 ^; L! t6 s# r0 t
(initget 3) ; cf 必须非零、非空, u7 ^! u d1 ~/ f* o) @
(setq vertGrw (getdist "\n每一圈的垂直增长距离: "))
2 j; c4 S7 |$ G Y (initget 6) ; ptCntPerCircle 必须非零、不可忽略9 [- y) f! c$ e0 a/ G
(setq ptCntPerCircle (getint "\n每一圈的插值点数<35>: "))6 s6 J2 Q; O* a% C/ @
(cond ((null ptCntPerCircle) (setq ptCntPerCircle 35)))
0 O W8 p J4 u5 l( m (spring RottCnt cntPt horiGrw ptCntPerCircle bgnRdtn vertGrw)9 e' a5 J! t, C* C1 a3 `
(setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值; R7 x& K$ X4 D/ L) B9 _- Y
(setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值7 h& g' ]: Q: G; N7 n1 M" @, H
(setq *error* olderror) ; Restore old *error* handler7 G: m: O4 L5 _9 g4 {
(princ)6 ^- ^4 c- Z" _; k
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发表于 2007-2-27 20:32:35
