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(defun errMsg (s) ; 当命令执行时出现错误
' W* F2 x: S/ ~' F- K5 \9 o3 g ; 例如用户按下了CTRL + C* K, q2 C& H$ B+ E, c
(if (/= s "Function cancelled")% Y% I+ n) S3 K# m n
(princ (strcat "\nError: " s))5 h. j, x, [6 g
)
' B/ @3 K; v& j: T) U5 j, z. W (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值
* q! N. p9 r* \( A (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值% f/ e& r+ I- K; w
(setq *error* olderror) ; 恢复旧的错误处理
" {( `$ n6 C9 L; Z) e# `) {) a (princ)2 Y; x: C& s% K! R! ^1 l% a$ Y' W
)
# G8 S( J5 K) y0 R(defun spring (nRepeat cntPoint bhfac lr strad bvfac, A- u4 K) y" r$ Y" F; D8 Z4 i
/ angle distnc tp aGrw dhGrw dvGrw Pi2 dv)
8 j) _$ D9 P E5 d (setvar "blipmode" 0) ; 关闭 blipmode ; o) L9 w, d) _; o" M+ }; z- g
(setvar "cmdecho" 0) ; 关闭 cmdecho
2 o m6 Q; ^6 F1 s" g- ]3 U (setq Pi2 (* 3.14159265 2))
6 H e G# g6 O( h( ?3 C (setq aGrw (/ Pi2 lr)); l0 m- ~9 Q8 Y- c: j+ J4 M2 z5 M* d9 Y
(setq dhGrw (/ bhfac lr))
( V' i- A) i) o! G: {# C9 i# T (if bvfac (setq dvGrw (/ bvfac lr)))1 V K3 H. a% Z/ ]5 J, G8 }. e: M
(setq angle 0.0)5 a0 x$ e! `/ I9 \
(if bvfac
9 }3 G/ r3 r/ G (setq distnc strad dv 0.0)
- N% P- [; D" v$ }! W @ (setq distnc 0.0)
4 L/ |6 j) h3 U ): |9 c; N, @) ]. n" }! L J
(if bvfac
/ x; _0 s1 A! ?: |! T( L/ s (command "3dpoly") ; 开始绘制弹簧" V* [- k% W( Z
(command "pline" cntPoint) ; 从基点开始绘制弹簧
# _; T- }. o+ B- y4 ` )5 ?" J6 f- |% l9 m% E( @% h. V
(repeat nRepeat ' f# J+ G9 x+ h
(repeat lr
) @" Q1 n2 ~9 y; j$ | (setq tp (polar cntPoint (setq angle (+ angle aGrw))
- h' v6 W- U3 }& M8 S# S( B( O8 v (setq distnc (+ distnc dhGrw))6 y) k9 }+ H" p) q
)
, i7 S7 S4 B% P8 V& Q' @0 z% i) Z )6 r. M/ a# Y3 y, H4 c3 K
(if bvfac9 O5 c; j8 \/ b6 W* a0 {# A5 Z) o
(setq tp (list (car tp) (cadr tp) (+ dv (caddr tp)))
2 o# x( c- Z4 S9 {, z2 n6 [ dv (+ dv dvGrw)
v' P- q* S6 a+ s1 ^1 G4 {9 G/ } )
4 p2 N1 A7 U4 U1 b+ r )! j$ a" }7 u h \4 b7 ^2 v& Q
(command tp) ; 继续输入下一点) U% i& I+ r& d' P x1 P
)
2 q8 `7 u& j, D$ r* A0 w( s )
5 z: d: l8 D7 r' c+ ^ (command "") ; 输入结束
8 L1 `! j2 n. r. x (princ)
* M% }9 g" e2 _& J# W)
7 }* w) M) ^2 ?;;;
* b G) U) [2 q! Y;;; 生成三维弹簧函数调用接口. [, `9 l& r" v X [/ U$ Y; x" g
;;;) A* `- C. s( o$ ?
(defun C:3DSPRING (/ olderror cmdch blpmd cntPt RottCnt horiGrw vertGrw bgnRdtn ptCntPerCircle)
( O& @$ f" [) g" v7 o (setq cmdch (getvar "cmdecho")) ; 获取cmdecho值，以便调用结束后恢复
% Q( }: B9 T4 K4 Z8 B1 q (setq blpmd (getvar "blipmode")) ; 获取blipmode值，以便调用结束后恢复
; d) E! ^: d( M' m4 h+ V) h (setvar "cmdecho" 0) ; 关闭 cmdecho 4 ]* @# Q: g7 H8 |; f
(initget 1) ; cntPt 必须非空
, L% K' p, H1 i; U: \! S* u (setq cntPt (getpoint "\n请输入底部中心点: "))
$ Z0 _3 J) S' _* T6 H (initget 7) ; RottCnt 必须非零、非空,不可忽略
: A6 D, F' }! |4 \ A/ G (setq RottCnt (getint "\n旋转的圈数: "))
. n1 a9 X# `9 V% Q; B" l (initget 7) ; bgnRdtn 必须非零、非空,不可忽略+ Y/ n+ W5 C3 q) `' r/ {1 T
(setq bgnRdtn (getdist cntPt "\n起始半径: "))
% V( ], E5 r3 n% x5 L9 H- S (initget 1) ; cf 必须非零、非空: l% W- ?$ w2 D- [& Y
(setq horiGrw (getdist "\n每一圈的水平增长距离: "))
/ j$ H z& b" E* v8 @" L (initget 3) ; cf 必须非零、非空
\1 K: h: W8 S& f (setq vertGrw (getdist "\n每一圈的垂直增长距离: "))8 G$ e8 L' x3 F/ p( q; K- N" Q
(initget 6) ; ptCntPerCircle 必须非零、不可忽略
" }2 E/ {2 J. z5 O (setq ptCntPerCircle (getint "\n每一圈的插值点数<35>: "))7 j2 m: y3 D9 R6 y/ Q& N
(cond ((null ptCntPerCircle) (setq ptCntPerCircle 35)))
! i8 ? j! E1 ?4 y6 R- U (spring RottCnt cntPt horiGrw ptCntPerCircle bgnRdtn vertGrw)
' R! n( c c) U8 s% ~+ n (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值& h0 r. d% J3 E0 A2 t. U9 K* K
(setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值1 L4 f7 D8 ^; P* y6 f4 [
(setq *error* olderror) ; Restore old *error* handler8 G8 c5 I4 d" _2 W" f! Q( R
(princ)" y1 p7 b; m! ]+ T5 r
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发表于 2007-2-27 20:32:35
