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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
. o; A8 ^, s6 z* ]" @ - ; 例如用户按下了CTRL + C
2 z3 `+ O, s- P: A2 v - (if (/= s "Function cancelled")) G. d' X: Y2 w2 d& J: M
- (princ (strcat "
% ?% z# M d2 T K! k' u - Error: " s))
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- (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值/ k/ a5 h: r* K, V0 m
- (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值! |4 e, o8 V, P) Q K/ e
- (setq *error* olderror) ; 恢复旧的错误处理
* w5 I+ T7 C" @5 c' |# c - (princ)+ P7 u; n% O! X" e$ ]# X/ Y2 W
- )# F- u- r& N2 e& n* l# c; I1 V
' r- k6 z o) _1 C) l, g0 X2 O3 T- (defun spring (nRepeat cntPoint bhfac lr strad bvfac
7 `5 V) D/ E- B: u/ o/ y - / angle distnc tp aGrw dhGrw dvGrw Pi2 dv)
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, I& R/ m7 T: @# }/ X) g- (setvar "blipmode" 0) ; 关闭 blipmode 7 |% {. n" e1 L# z
- (setvar "cmdecho" 0) ; 关闭 cmdecho* V. K( k8 w0 |+ l( Q
- (setq Pi2 (* 3.14159265 2))' `) W+ T7 L. y& r3 e ?
- (setq aGrw (/ Pi2 lr)) D6 \1 V/ F0 ]7 s
- (setq dhGrw (/ bhfac lr))
5 i( T" C' |7 y; Q7 c2 g4 F$ j - (if bvfac (setq dvGrw (/ bvfac lr)))- r( M& N# Q# c- C& p( Q
- (setq angle 0.0) {$ I* l8 m7 [1 q8 x& J0 n
- (if bvfac
4 C: h0 H( \0 r9 {( Y5 z - (setq distnc strad dv 0.0)+ n6 l3 a. T4 O) q' |
- (setq distnc 0.0)
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3 T$ a7 \" h- r - (if bvfac 7 k& ^& n$ F8 |, m
- (command "3dpoly") ; 开始绘制弹簧; c+ b4 t/ ? a0 _ l8 [+ Q
- (command "pline" cntPoint) ; 从基点开始绘制弹簧4 h8 n g5 h, j0 m6 H. o
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- (repeat nRepeat 3 K H7 f$ m2 R3 r
- (repeat lr 6 F- J/ h5 X& v* X' x! x# k* J
- (setq tp (polar cntPoint (setq angle (+ angle aGrw))
6 h6 }( E' H, _ - (setq distnc (+ distnc dhGrw))% B9 X. e: W/ l
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- )
2 I A m* X" \* t9 j, G! i/ ` - (if bvfac
/ S1 G1 l. Q6 {! e7 J - (setq tp (list (car tp) (cadr tp) (+ dv (caddr tp))); a6 R) p9 }6 s7 R5 S# K
- dv (+ dv dvGrw)
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- (command tp) ; 继续输入下一点, x+ c6 N: ~% y$ j
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- (command "") ; 输入结束
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9 \1 u0 K1 D) G# s - ;;; 生成三维弹簧函数调用接口0 p& W5 f! ~3 i* f2 |4 o+ B J
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- (defun C:3DSPRING (/ olderror cmdch blpmd cntPt RottCnt horiGrw vertGrw bgnRdtn ptCntPerCircle) 3 S5 ?# }' j- x7 {
- (setq cmdch (getvar "cmdecho")) ; 获取cmdecho值，以便调用结束后恢复
" ?: H: o9 `) M8 |6 e - (setq blpmd (getvar "blipmode")) ; 获取blipmode值，以便调用结束后恢复! E8 y) C, K( N i) j
- (setvar "cmdecho" 0) ; 关闭 cmdecho
& b3 E6 L# r+ M* b - (initget 1) ; cntPt 必须非空+ c2 O9 x& k3 o& O: b1 Q
- (setq cntPt (getpoint "9 p& d9 w% P& ?8 k" v8 t/ N( u! d
- 请输入底部中心点: "))
5 h, V1 u0 x q! K - (initget 7) ; RottCnt 必须非零、非空,不可忽略
# j- `0 x$ t& [7 u5 S - (setq RottCnt (getint "/ p. b( K3 U! S* ]; U, c
- 旋转的圈数: ")) F. H: x `- |( M8 {/ b; i- A& Y6 l
- (initget 7) ; bgnRdtn 必须非零、非空,不可忽略
+ y5 b: L! K0 ~* P( V7 h. m - (setq bgnRdtn (getdist cntPt "3 |; N3 z [! {2 ]' s
- 起始半径: "))
& x1 u* q. d( |/ o" I - (initget 1) ; cf 必须非零、非空. s3 c4 S# l! w; [
- (setq horiGrw (getdist "1 i" Q" O( ?: o9 H9 v
- 每一圈的水平增长距离: "))
' @. {/ z% N( h9 t; A* V. L - (initget 3) ; cf 必须非零、非空
9 p6 S$ r: P3 r/ J4 r - (setq vertGrw (getdist "( \: i/ }* A+ D/ s( m
- 每一圈的垂直增长距离: "))2 I/ J- |6 C+ w" u5 W+ i& a/ H
- (initget 6) ; ptCntPerCircle 必须非零、不可忽略
}. l: S0 U: d0 u3 N( n1 B - (setq ptCntPerCircle (getint "- K1 F. M6 F$ q6 \+ `
- 每一圈的插值点数<35>: "))
4 s+ a; `$ D; T/ F$ `+ U( Y0 s" ` - (cond ((null ptCntPerCircle) (setq ptCntPerCircle 35)))
$ d8 q# J- C% M# ?$ w y# _0 A - (spring RottCnt cntPt horiGrw ptCntPerCircle bgnRdtn vertGrw). {7 b0 Z7 h3 m: T. i
- (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值
, B5 f% _' f& X3 D - (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值4 i4 b" V7 r* G6 z& ~$ w
- (setq *error* olderror) ; Restore old *error* handler7 e( U: S6 o+ ^, n9 p
- (princ)# `) ]* d3 W0 n# _8 M
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发表于 2010-3-13 11:12
楼主