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(defun errMsg (s) ; 当命令执行时出现错误 3 W) P |5 A6 H5 j& m! H
; 例如用户按下了CTRL + C& }" B0 _6 U. [- h- e# b" h8 h7 {
(if (/= s "Function cancelled")5 ?, K% j$ H/ J8 \
(princ (strcat "\nError: " s))
4 r; P0 o' }. d E, {* i )
, R$ r: x* Y! g: L! q (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值
/ a: Q2 P. ?+ B' C# Z5 n k0 c% r (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值
6 ]) b* Q4 ~# q( b5 \6 i' _' l, S% L9 q$ n9 P (setq *error* olderror) ; 恢复旧的错误处理8 _5 A1 W$ s0 p1 i, S5 E
(princ), Y6 H' _* P5 b0 m' T7 D3 V( N& ]
)8 K0 l( H) g5 K3 b% Y* e4 j
(defun spring (nRepeat cntPoint bhfac lr strad bvfac
( m3 l$ q8 |' K; } / angle distnc tp aGrw dhGrw dvGrw Pi2 dv)
% I: {9 [& U+ g; n$ V d% i2 } (setvar "blipmode" 0) ; 关闭 blipmode
; r4 r9 A' A4 l5 V. d9 o: c (setvar "cmdecho" 0) ; 关闭 cmdecho, X: ^; g: E: U: }
(setq Pi2 (* 3.14159265 2))4 P" n8 J) j- W- J, B* m; I
(setq aGrw (/ Pi2 lr))/ R+ v! L1 K4 m7 s1 X& ]
(setq dhGrw (/ bhfac lr))9 R# R- E3 \0 Z" [
(if bvfac (setq dvGrw (/ bvfac lr)))
1 u! O* ?, `7 ?9 |/ ]& C (setq angle 0.0)
! h& D9 V8 ?; @1 P$ T (if bvfac
, r3 ?+ o! q8 O (setq distnc strad dv 0.0)
0 E8 J1 w, K, _$ a0 T# c (setq distnc 0.0)
& v" L& F" m0 h! d. U )
; W' a- N- m# q1 v! k* K (if bvfac + ?$ I* s5 Y1 B0 j5 F' R) {7 ?
(command "3dpoly") ; 开始绘制弹簧7 r# V# n: d. h/ M: c1 y9 }% K
(command "pline" cntPoint) ; 从基点开始绘制弹簧9 J3 A. _. s0 u& j+ {% z. I% ~
). ^' s! [ J" K6 `% D5 \& D
(repeat nRepeat f* u5 J( e/ j$ d. j, i
(repeat lr $ Z" F2 r8 v& ~& F3 C
(setq tp (polar cntPoint (setq angle (+ angle aGrw))2 F, m f! o9 S( ?* c7 r1 V) Z
(setq distnc (+ distnc dhGrw)), H5 h( D4 A4 B& \0 D
); d: q: u$ y! a9 n# W, J# ^4 z
)
7 ^' K: G! b- R7 f (if bvfac
0 D3 F: Y& p0 |) i; ?) e, ?* e4 ?$ { (setq tp (list (car tp) (cadr tp) (+ dv (caddr tp)))
" q/ P: c, E- _6 r dv (+ dv dvGrw)$ d; _* T3 g4 M* j' [
)8 L9 K" @% M* _* r- u
)* s3 A8 N8 o9 t* z! O6 G4 P" k
(command tp) ; 继续输入下一点3 V) {# o/ v. E2 }6 b5 A0 |
)
6 c3 X& a: L1 O& E% }" X+ v )
- C9 r+ v) ~( Q( A (command "") ; 输入结束
7 |0 K* `' P2 d5 A (princ)
+ {7 V9 f' w& v6 o5 g) 7 E1 C& A/ S# F, ~2 H
;;;
: P' j/ i; ^3 _3 G, `/ I' Y;;; 生成三维弹簧函数调用接口& d, v I6 i; A3 _ g, m5 o
;;;
. y; D% |5 H) |; R! \& X(defun C:3DSPRING (/ olderror cmdch blpmd cntPt RottCnt horiGrw vertGrw bgnRdtn ptCntPerCircle)
8 g) n/ V: U, n" h7 q4 } (setq cmdch (getvar "cmdecho")) ; 获取cmdecho值，以便调用结束后恢复( }# s: }# D/ v; J% ]2 ]
(setq blpmd (getvar "blipmode")) ; 获取blipmode值，以便调用结束后恢复7 b; O. @% a# @ o! x0 h$ ]/ [
(setvar "cmdecho" 0) ; 关闭 cmdecho
9 [9 ~% N. o: G (initget 1) ; cntPt 必须非空: t# y' }, p7 @
(setq cntPt (getpoint "\n请输入底部中心点: "))
% I% b) P3 N% H2 y* \2 \ (initget 7) ; RottCnt 必须非零、非空,不可忽略! Y: ?, Y) A; X1 [ R! A
(setq RottCnt (getint "\n旋转的圈数: "))
* q2 M- Q, _ M* P) s$ `, J" T (initget 7) ; bgnRdtn 必须非零、非空,不可忽略
; E8 W9 H# i* ?# V- R7 X* m (setq bgnRdtn (getdist cntPt "\n起始半径: "))
) b4 z* e% |. P3 t6 A (initget 1) ; cf 必须非零、非空
0 X; ^( _, T( S+ W. V" r (setq horiGrw (getdist "\n每一圈的水平增长距离: "))$ _/ U, W. P, X
(initget 3) ; cf 必须非零、非空
r5 G2 K7 G( H" n8 Q (setq vertGrw (getdist "\n每一圈的垂直增长距离: "))
# O3 w& R" X7 p7 `6 ^ (initget 6) ; ptCntPerCircle 必须非零、不可忽略7 v S6 I. C6 U) u W
(setq ptCntPerCircle (getint "\n每一圈的插值点数<35>: "))
; \; x5 R# ]5 d- d (cond ((null ptCntPerCircle) (setq ptCntPerCircle 35))) % i4 f/ L5 B0 D
(spring RottCnt cntPt horiGrw ptCntPerCircle bgnRdtn vertGrw)
* q m0 B% v$ f5 g- n/ M (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值; \# x: E$ g1 B" j
(setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值
0 p* [- M8 n2 R. z/ E j+ f (setq *error* olderror) ; Restore old *error* handler
_5 q9 z7 M8 G4 I' W2 v9 p (princ)
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发表于 2007-2-27 20:32:35
