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(defun errMsg (s) ; 当命令执行时出现错误
6 d% }6 P' v6 b: ~ ; 例如用户按下了CTRL + C0 \8 f: S( \: Q) e2 V/ x \7 `! a8 v
(if (/= s "Function cancelled")
& d0 m! Z' m! `7 m& y$ r! ` (princ (strcat "\nError: " s)); ]3 W: O1 E2 j P
)4 r# c% c0 v8 f& \, u4 h
(setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值+ d; ?6 |: Z# s( S- u ^
(setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值
4 V2 Y0 T6 f' ?( z ^2 F (setq *error* olderror) ; 恢复旧的错误处理8 Y' t* @9 V' u; t# ]# z: A
(princ); Q2 m$ M9 j% B. p5 d3 K9 \( t& s
). q$ n1 V; g p+ l( ?* E
(defun spring (nRepeat cntPoint bhfac lr strad bvfac& I: h6 V% u) U, `
/ angle distnc tp aGrw dhGrw dvGrw Pi2 dv)4 K# C$ _$ L: r
(setvar "blipmode" 0) ; 关闭 blipmode
; f2 G3 G% ^ G" l2 @* I (setvar "cmdecho" 0) ; 关闭 cmdecho
, R$ p: Z7 Y' x. D, W3 J/ A1 `* ] (setq Pi2 (* 3.14159265 2))
* L' ]9 w j$ m (setq aGrw (/ Pi2 lr))' U2 o) V( j5 Z/ @" R! o2 ]
(setq dhGrw (/ bhfac lr))
1 B [4 I8 a) _7 e6 T b (if bvfac (setq dvGrw (/ bvfac lr))) [- S, z' A" Y1 ?6 g6 b
(setq angle 0.0)
9 x) O+ d+ S6 a8 c (if bvfac
+ _. h$ ?# B) H5 Z$ `& _ (setq distnc strad dv 0.0)
5 d' t g* L* y7 ^5 I8 I* g& m (setq distnc 0.0)
3 {, i5 q' O" |* Y! I; {3 ?! E )$ i& \ a, b5 X; ?
(if bvfac
+ i$ Q3 |! r& F; d( b! {1 A! u (command "3dpoly") ; 开始绘制弹簧
3 k, r0 P6 X) Y( z3 ^! ~5 P/ ^ (command "pline" cntPoint) ; 从基点开始绘制弹簧4 q0 b( R" T' d4 k `
)
% n6 T; {5 n' R (repeat nRepeat
0 v t2 k5 ]. x6 b i (repeat lr & ^! y4 W" x8 A6 d
(setq tp (polar cntPoint (setq angle (+ angle aGrw))% l: I: y$ B7 D& W
(setq distnc (+ distnc dhGrw))7 |' ~0 T$ o- @' G! y0 E
)7 }. H: f' X, o
)
3 M5 ^# H, T& ?3 ] (if bvfac$ Z; U# j# L% Z' c$ K1 j
(setq tp (list (car tp) (cadr tp) (+ dv (caddr tp)))! N* U8 | y4 o' o
dv (+ dv dvGrw)
E/ b$ A7 b+ } )4 P! G1 G6 o) D& B" q# N! R6 Y
)
- V0 Q& b* G8 S6 H7 \; u. R (command tp) ; 继续输入下一点4 Q/ [ E3 @7 M, R: X% U
)
* h0 U) h8 h5 g )
) n* v/ _! g' m6 g3 { (command "") ; 输入结束
. {2 j; S: v% U ] (princ) b& w& D e# ~4 ^( h# [
) 1 s! n- z* a L" C7 y' }2 l/ T$ Q
;;; [, I# B) b2 u1 W( Q
;;; 生成三维弹簧函数调用接口# p7 W* s& E" y
;;;) g1 q& K6 y' }& B [$ ]
(defun C:3DSPRING (/ olderror cmdch blpmd cntPt RottCnt horiGrw vertGrw bgnRdtn ptCntPerCircle)
" p3 N- ]2 w# P* M- `* k! I: H (setq cmdch (getvar "cmdecho")) ; 获取cmdecho值，以便调用结束后恢复0 F- p% R0 G4 j: l: x
(setq blpmd (getvar "blipmode")) ; 获取blipmode值，以便调用结束后恢复
. Z7 p4 A. {# y0 s (setvar "cmdecho" 0) ; 关闭 cmdecho
0 k( d! W6 i w( B. A+ d" E. ], |, E l (initget 1) ; cntPt 必须非空+ |* k+ E6 C6 r6 b i$ w: ?( e5 u! y
(setq cntPt (getpoint "\n请输入底部中心点: "))* j6 T8 l y; z0 g" s, i
(initget 7) ; RottCnt 必须非零、非空,不可忽略
4 u `' Y6 |2 ~3 R (setq RottCnt (getint "\n旋转的圈数: "))
/ p* w/ p- {: W; d! D9 U8 I1 v' ~ (initget 7) ; bgnRdtn 必须非零、非空,不可忽略 r5 P* s6 ?1 t
(setq bgnRdtn (getdist cntPt "\n起始半径: "))/ O9 Y8 F5 t$ {% ^7 ~% ^1 j! ~4 X
(initget 1) ; cf 必须非零、非空; a6 `0 ?3 v) p1 G) n+ W
(setq horiGrw (getdist "\n每一圈的水平增长距离: "))/ D2 b0 u$ a- k. L( |$ \
(initget 3) ; cf 必须非零、非空
( x8 v4 H) Q: d8 G (setq vertGrw (getdist "\n每一圈的垂直增长距离: "))
* N9 R/ Q$ h0 J- n$ d (initget 6) ; ptCntPerCircle 必须非零、不可忽略
, ^2 G" v7 L3 E ~ (setq ptCntPerCircle (getint "\n每一圈的插值点数<35>: "))4 } T, z3 q- E! B5 I5 U8 v
(cond ((null ptCntPerCircle) (setq ptCntPerCircle 35))) 0 M- Z; R9 P, I% Z/ J
(spring RottCnt cntPt horiGrw ptCntPerCircle bgnRdtn vertGrw)
/ C& [! u3 H/ W$ X/ a& w (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值 ?* M. Y! D6 n# N5 q- ]9 O
(setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值
& o* p, j, [# p, y. C (setq *error* olderror) ; Restore old *error* handler
2 e2 {; _& d1 d' q; } (princ)! _6 C; d% X/ c. T
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发表于 2007-2-27 20:32:35
