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(defun errMsg (s) ; 当命令执行时出现错误
2 P3 P W# S3 `- b$ w( |7 G ; 例如用户按下了CTRL + C
# N2 a! N% v R. h (if (/= s "Function cancelled")
8 x; X$ _. G6 r& S# q6 N; E" M (princ (strcat "\nError: " s))
# T2 c" R D( ]& C )- J7 F$ h+ r5 a/ P! B; b; d
(setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值* u# c/ Z: }7 g# Q) g" j2 c
(setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值 |" _8 B# d% g' g' H
(setq *error* olderror) ; 恢复旧的错误处理& t+ r! P9 J, L! p! ]: f
(princ)
c, W/ G3 j& ~! R3 g)# s2 {- _0 H3 L3 T" ^
(defun spring (nRepeat cntPoint bhfac lr strad bvfac+ y5 x+ V& B6 v r2 c. ?
/ angle distnc tp aGrw dhGrw dvGrw Pi2 dv)9 |/ @% E) S0 _. v, o/ z5 s
(setvar "blipmode" 0) ; 关闭 blipmode
, c0 r' {1 A4 M, |& | (setvar "cmdecho" 0) ; 关闭 cmdecho1 @* n0 J# G& h: Z: C7 G/ ]2 ~
(setq Pi2 (* 3.14159265 2)). y) I; B) v: M! G" e
(setq aGrw (/ Pi2 lr)) ?! y, L) C3 q/ r3 J. c
(setq dhGrw (/ bhfac lr))
5 O1 u: r' S: H" w, i' T2 n (if bvfac (setq dvGrw (/ bvfac lr)))
+ y9 {6 `/ i1 \. H5 F) P# Z N: t (setq angle 0.0)* l. U0 \$ t& y7 m& ?: k
(if bvfac
+ m ?: a2 O6 k% r/ \ (setq distnc strad dv 0.0)
- c% m; r% ^* I: v (setq distnc 0.0) P$ n& ~( d! R% ^% O
)7 S7 N! f+ o F$ l) k8 t2 q
(if bvfac
6 T! c- A; J! Q0 O: ^+ `* E (command "3dpoly") ; 开始绘制弹簧
9 t' e5 u$ t/ j2 } (command "pline" cntPoint) ; 从基点开始绘制弹簧
3 q7 t, p1 } x6 Z! _ )
9 S! x1 K0 _! y9 o9 P8 ~- t' ~ (repeat nRepeat
a6 Y* X7 t1 y/ u3 g: E (repeat lr
" M* Y" e( v0 T' ~' X1 j" g (setq tp (polar cntPoint (setq angle (+ angle aGrw))
7 ^& v W5 R* v8 K g4 `2 x3 m (setq distnc (+ distnc dhGrw))
- m( X1 t7 z0 }- k, `9 v. n8 k )
$ \5 c( U* s$ Q, s )
5 E4 E* i9 G2 s) M% L (if bvfac
3 T$ B3 B( ~0 O& \2 w7 v+ U( _ (setq tp (list (car tp) (cadr tp) (+ dv (caddr tp)))& W* d) e; o( Z3 F
dv (+ dv dvGrw)
}9 ?* X6 |7 @ )
9 X" a" [, l+ ? )
+ b7 Z" F/ a O, ~& Q4 Y9 L (command tp) ; 继续输入下一点
) X' @1 U( i( | )
4 Y' w- Z' ^) V. g( R )
1 t# ]2 Z/ W3 t# K5 K3 Y* { (command "") ; 输入结束* f4 ]) Q f4 _) [2 l9 M) ~# s
(princ); i1 H/ f/ i1 t+ K
)
2 [# A7 f6 V% \1 x5 J1 ^;;;
# _; H# o4 N/ u. U7 `% b) B;;; 生成三维弹簧函数调用接口
7 ~: J- {! R- X5 Q2 a2 ];;;! \2 U3 }. M; P! I% h. l+ x
(defun C:3DSPRING (/ olderror cmdch blpmd cntPt RottCnt horiGrw vertGrw bgnRdtn ptCntPerCircle) 5 s' O9 y. D: {% {
(setq cmdch (getvar "cmdecho")) ; 获取cmdecho值，以便调用结束后恢复
. e% |" P3 O1 J+ x (setq blpmd (getvar "blipmode")) ; 获取blipmode值，以便调用结束后恢复
) Q/ P C5 E, u2 f% o+ m6 F% B8 H; q X (setvar "cmdecho" 0) ; 关闭 cmdecho " y& i7 u: e& I, M# H" U) i
(initget 1) ; cntPt 必须非空
/ b4 i) B+ v) c$ B (setq cntPt (getpoint "\n请输入底部中心点: "))
6 q% s) j& B" H: X2 W& ~ (initget 7) ; RottCnt 必须非零、非空,不可忽略
: A0 H$ |3 A2 ` (setq RottCnt (getint "\n旋转的圈数: "))6 G' y4 ^+ Y2 K! t+ e' X0 r
(initget 7) ; bgnRdtn 必须非零、非空,不可忽略" H9 H( |- X; J
(setq bgnRdtn (getdist cntPt "\n起始半径: "))
5 B+ H. b' c& |3 O) i n (initget 1) ; cf 必须非零、非空& o& F% }* R3 O! G! I$ W
(setq horiGrw (getdist "\n每一圈的水平增长距离: "))4 P3 s* I6 _, \8 K1 A6 ~9 d
(initget 3) ; cf 必须非零、非空
2 E O* B( @; T (setq vertGrw (getdist "\n每一圈的垂直增长距离: "))" X% e3 d, F. A d+ f$ g
(initget 6) ; ptCntPerCircle 必须非零、不可忽略
: t+ R: b/ }/ |/ n5 `7 D' M (setq ptCntPerCircle (getint "\n每一圈的插值点数<35>: "))+ |# |, Y: Z1 k
(cond ((null ptCntPerCircle) (setq ptCntPerCircle 35))) $ C1 |" e6 e" @0 T- f* J% g
(spring RottCnt cntPt horiGrw ptCntPerCircle bgnRdtn vertGrw)
0 r( G* Y p v, x" M (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值
9 y2 s$ w: I n- J* T8 R* u9 Z (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值
% ]: D) }/ q$ i1 D! D (setq *error* olderror) ; Restore old *error* handler+ F0 i0 Y G% d( d" b
(princ)
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发表于 2007-2-27 20:32:35
