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弹簧源程序4 ~; ~. O. g" @4 N
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" r4 v g( L# H- |- (defun errMsg (s) ; 当命令执行时出现错误
: _2 A/ L3 O5 P/ ^. f - ; 例如用户按下了CTRL + C
* r7 `- r9 @7 T" }. | @( O - (if (/= s "Function cancelled")* D) N0 D, F" C) {( f- e% T
- (princ (strcat "
4 S4 b$ h% [! A1 g$ J - Error: " s))
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- (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值: p, X6 U7 G; R3 S2 \
- (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值0 G& e( d+ \: x/ M
- (setq *error* olderror) ; 恢复旧的错误处理
; W4 a4 j" H" {- Y1 r+ @ - (princ)$ i0 H0 i0 P9 D$ z/ f
- )
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9 `6 `% X2 e9 a) W- (defun spring (nRepeat cntPoint bhfac lr strad bvfac
9 E! w$ e! Y( H; E - / angle distnc tp aGrw dhGrw dvGrw Pi2 dv)7 z) G1 X6 j; K6 e1 l3 n
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- (setvar "blipmode" 0) ; 关闭 blipmode 7 L1 F3 r% x3 Z- j K. x
- (setvar "cmdecho" 0) ; 关闭 cmdecho
6 a5 ]0 A- p( R( x& \% c" B - (setq Pi2 (* 3.14159265 2))' R O6 s& ^/ E2 J Q! H
- (setq aGrw (/ Pi2 lr))! r; I- z2 W& r: T, z# `( s
- (setq dhGrw (/ bhfac lr))
* p9 l) E7 i6 [' v4 Y: N" R5 a - (if bvfac (setq dvGrw (/ bvfac lr)))( |2 P" b7 B7 u1 Y7 H' W
- (setq angle 0.0)0 o% I+ |2 Y; c, h' ]1 b% b; D) k6 ~
- (if bvfac- s0 W3 C* e/ l. i
- (setq distnc strad dv 0.0), R, p" e) L8 G8 {1 `; e
- (setq distnc 0.0)
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- (if bvfac
4 Z) t4 I: X7 b3 a - (command "3dpoly") ; 开始绘制弹簧* B$ q8 x6 x/ M+ U
- (command "pline" cntPoint) ; 从基点开始绘制弹簧
: }3 d0 I5 L. K - )2 c; u& _; ] b( o8 n3 m' y
- (repeat nRepeat 9 P* W/ r' }, b+ o
- (repeat lr
6 s* D; m2 V, G - (setq tp (polar cntPoint (setq angle (+ angle aGrw))/ Z0 I% g! d' B2 Z0 g% i3 K. ^6 k5 H
- (setq distnc (+ distnc dhGrw))6 X, c' }; h- W8 q% f E
- )
0 b j6 m& V7 @/ N3 @8 i2 ?- Q4 ? - ); `3 u C9 \9 E! \
- (if bvfac6 X+ N1 s' w7 @1 v- T, X( H7 u" z
- (setq tp (list (car tp) (cadr tp) (+ dv (caddr tp)))
* }7 ?9 b6 S1 \ - dv (+ dv dvGrw)$ u9 z& ~3 ?6 c+ J: K$ E2 `
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, _; R, M- r! [3 e9 D, Q - (command tp) ; 继续输入下一点
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- (command "") ; 输入结束/ Z& i! h% ?7 Z
- (princ)) e1 Q6 Y7 B! J- \. Q# x
- )
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! ]$ \" J% o5 |- c& @5 a- ;;;$ K) y4 i, J# L+ E8 `* N1 g- }* i
- ;;; 生成三维弹簧函数调用接口
& s! b$ C" k/ `4 h3 l9 ]# w - ;;;
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- (defun C:3DSPRING (/ olderror cmdch blpmd cntPt RottCnt horiGrw vertGrw bgnRdtn ptCntPerCircle) : {9 m" N% X. Z/ `* X# Y
- (setq cmdch (getvar "cmdecho")) ; 获取cmdecho值，以便调用结束后恢复1 x8 x H+ Z5 S) M) A
- (setq blpmd (getvar "blipmode")) ; 获取blipmode值，以便调用结束后恢复6 g. ]7 I8 w) M! x
- (setvar "cmdecho" 0) ; 关闭 cmdecho * d, m$ e% j9 b/ T3 d8 E: E$ v
- (initget 1) ; cntPt 必须非空3 O; S9 ~ Y( _2 J% a( g8 Z7 w
- (setq cntPt (getpoint "* g$ N( z& {9 m3 F! e
- 请输入底部中心点: "))
" d! } V9 z/ C4 R% q1 A - (initget 7) ; RottCnt 必须非零、非空,不可忽略/ w/ M! w1 X1 R$ g4 b! v8 |
- (setq RottCnt (getint "0 @* V8 l( q' x
- 旋转的圈数: "))
/ `+ G) F c3 e! u( c. z - (initget 7) ; bgnRdtn 必须非零、非空,不可忽略9 F' ]) |/ j/ |4 ?8 Y
- (setq bgnRdtn (getdist cntPt "
& B; p3 z( y' V0 ~1 R - 起始半径: "))
( K9 k+ A; g) W$ Q - (initget 1) ; cf 必须非零、非空
5 O) v! a$ i6 B0 { - (setq horiGrw (getdist "
/ }4 @: [: M8 m- Y! a/ s - 每一圈的水平增长距离: "))4 g: A {, X' \/ t8 b' I
- (initget 3) ; cf 必须非零、非空- A' v% f2 Z1 z) L, }4 t$ \! z3 I
- (setq vertGrw (getdist "
5 v4 s& ~+ V0 F2 {' ^& x; g3 P - 每一圈的垂直增长距离: "))# ]% j `0 P! j
- (initget 6) ; ptCntPerCircle 必须非零、不可忽略
/ Q- w8 m: z y' Z8 l$ Z+ A% l! h - (setq ptCntPerCircle (getint "8 J5 l' Y k( D4 q1 a0 d; N
- 每一圈的插值点数<35>: "))
& R$ v# w6 z. `* d4 P9 m9 B - (cond ((null ptCntPerCircle) (setq ptCntPerCircle 35))) 9 X P7 R4 \* G! O1 Q
- (spring RottCnt cntPt horiGrw ptCntPerCircle bgnRdtn vertGrw)
! Q4 d& y* [7 d) C/ ? - (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值6 Z8 |9 ]1 _) A" J
- (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值4 p# S+ K f1 [: c
- (setq *error* olderror) ; Restore old *error* handler
* \6 H3 i3 l7 | - (princ)
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发表于 2010-3-13 11:12
楼主