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弹簧源程序
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- (defun errMsg (s) ; 当命令执行时出现错误 ; d i- m" v: p g! o
- ; 例如用户按下了CTRL + C1 e7 `1 H: P# s( j5 d
- (if (/= s "Function cancelled")% ~. d) D) n+ u7 c( m! y: j* Y$ n5 A
- (princ (strcat "
! g/ S5 O% v& u - Error: " s))
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% L# C D; W% S$ Z, } - (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值6 x) Z( {2 X }
- (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值
5 J9 t3 n2 o4 t; O0 u) K3 C - (setq *error* olderror) ; 恢复旧的错误处理4 i% F6 b- C4 k. [3 x9 w
- (princ)
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# H3 _0 @) T" E5 L( G, w: ^- (defun spring (nRepeat cntPoint bhfac lr strad bvfac
2 V, ~0 ^- C: D - / angle distnc tp aGrw dhGrw dvGrw Pi2 dv)
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" i3 w, M$ _' a9 l' R$ ?- (setvar "blipmode" 0) ; 关闭 blipmode
9 }8 { }* W: M4 S - (setvar "cmdecho" 0) ; 关闭 cmdecho" J$ Z2 l- ]! C2 H% g, w7 x
- (setq Pi2 (* 3.14159265 2))
6 \$ O- z9 _4 ?1 y3 n! c+ G - (setq aGrw (/ Pi2 lr))
* d7 u: s+ p9 A5 w - (setq dhGrw (/ bhfac lr))
# z$ V5 |: G5 j! i - (if bvfac (setq dvGrw (/ bvfac lr)))
# R5 y' ^. W6 f' y3 S: c - (setq angle 0.0)
" b4 a Y+ a4 T8 m# z7 N - (if bvfac
) c# |% n0 q" |- N9 l - (setq distnc strad dv 0.0)
' |# }3 r" D9 G; j+ s - (setq distnc 0.0)* ^& g) j( c9 Z, f0 e- Q0 Q3 j7 [
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5 Z- d' O" E' _! D, ~" ?: t - (if bvfac
9 m! |( S- @; z, k! V$ @ - (command "3dpoly") ; 开始绘制弹簧# E$ h6 F+ Q* i- k% m, X5 V
- (command "pline" cntPoint) ; 从基点开始绘制弹簧* |4 k* p2 V: Y) J' Q- d$ ]
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- (repeat nRepeat
$ T5 a4 M* h' F8 X- b - (repeat lr " k9 a; K5 i: W$ x/ ]4 b5 O
- (setq tp (polar cntPoint (setq angle (+ angle aGrw))
( b0 }9 j8 n0 `) d3 q9 N6 f - (setq distnc (+ distnc dhGrw))
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* k w5 `! ~9 a4 C - (if bvfac
' A+ Q& e, F+ {; w( Z% _: l - (setq tp (list (car tp) (cadr tp) (+ dv (caddr tp))): y. c+ W3 g7 s
- dv (+ dv dvGrw)9 |" Y! H7 E9 r4 M& K ]+ `& U# h
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- (command tp) ; 继续输入下一点0 [& r/ v6 c) Q; Z4 y- T
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$ R; o- O g: ]3 }5 g+ I - (command "") ; 输入结束
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- ;;; 生成三维弹簧函数调用接口: A# u2 K2 R6 h/ H0 x1 c
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- (defun C:3DSPRING (/ olderror cmdch blpmd cntPt RottCnt horiGrw vertGrw bgnRdtn ptCntPerCircle)
5 n# \: x( o' E! Z - (setq cmdch (getvar "cmdecho")) ; 获取cmdecho值，以便调用结束后恢复
) D7 x! _$ j5 w - (setq blpmd (getvar "blipmode")) ; 获取blipmode值，以便调用结束后恢复
, {8 y0 B: P! p x0 `9 D! ^ - (setvar "cmdecho" 0) ; 关闭 cmdecho
; Z, W. S! P0 ]# o. ]+ P - (initget 1) ; cntPt 必须非空* k! b2 h. N* ]6 U& C! ~- o U
- (setq cntPt (getpoint "
% J: `1 S+ L' S; i" D9 N% [0 V - 请输入底部中心点: "))
7 Y- n: q6 `/ F1 Y4 ^( { - (initget 7) ; RottCnt 必须非零、非空,不可忽略, I, X" I2 ~9 ~9 I* M
- (setq RottCnt (getint "
. ~% i: y+ M& P: h7 G2 D - 旋转的圈数: "))
. A( K! R/ L2 d6 g, ~; e - (initget 7) ; bgnRdtn 必须非零、非空,不可忽略! N8 M; m' z/ r& z1 w
- (setq bgnRdtn (getdist cntPt "+ G0 \) ]/ e# I. M
- 起始半径: ")) j, u* @0 @+ t( a0 A1 j' c4 f
- (initget 1) ; cf 必须非零、非空
0 U0 E8 U+ Q; n1 J - (setq horiGrw (getdist "3 L( h* k3 Z* P
- 每一圈的水平增长距离: "))
: o* i$ _# [: ?, C - (initget 3) ; cf 必须非零、非空: r1 ], s% e( B7 T; ?5 l1 q
- (setq vertGrw (getdist "
3 S J; Q7 g1 Q - 每一圈的垂直增长距离: "))
, M# s4 a1 ^2 ~" P - (initget 6) ; ptCntPerCircle 必须非零、不可忽略) c5 }7 n/ [) r
- (setq ptCntPerCircle (getint "
( _+ c7 t" P4 w* u - 每一圈的插值点数<35>: "))
3 b: b( Q$ r+ D- |* X- X2 g: i. w - (cond ((null ptCntPerCircle) (setq ptCntPerCircle 35)))
6 G8 q0 P( @3 {5 P) [ - (spring RottCnt cntPt horiGrw ptCntPerCircle bgnRdtn vertGrw)8 j6 i1 u; L8 F+ c6 d; O' G, K
- (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值
' v1 }- f- x3 q. E - (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值6 p- w g4 e) ~
- (setq *error* olderror) ; Restore old *error* handler6 [+ U% K) @3 W" k6 F% s! m7 b
- (princ)
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发表于 2010-3-13 11:12
楼主