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弹簧源程序/ T" r3 n% ^6 s- n
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- (defun errMsg (s) ; 当命令执行时出现错误 1 |: W( Q* @! o: s/ n+ Q
- ; 例如用户按下了CTRL + C
7 ~3 A' D* m- [* j! I, T1 N7 e - (if (/= s "Function cancelled")2 u! x; d7 D, c) E4 p1 M
- (princ (strcat "- c& I4 ~2 D' @
- Error: " s))9 q9 d" O2 U) N: \8 V
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- (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值" A! P# D% G( J. F( p
- (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值
a7 d- q2 I- e' V ]; U+ K/ s - (setq *error* olderror) ; 恢复旧的错误处理, v0 x9 M) R- d4 e% z
- (princ)
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- (defun spring (nRepeat cntPoint bhfac lr strad bvfac, i4 H2 U& \! e B
- / angle distnc tp aGrw dhGrw dvGrw Pi2 dv)* ?/ Q5 R/ I2 P# l. C: V$ K1 b$ x
$ v; ?4 D$ C% W3 b- (setvar "blipmode" 0) ; 关闭 blipmode $ f/ s1 H4 f& ^3 \" M+ {
- (setvar "cmdecho" 0) ; 关闭 cmdecho7 h& F3 I% {3 F. ~# o
- (setq Pi2 (* 3.14159265 2))
- E g2 |; G. H& R( P - (setq aGrw (/ Pi2 lr))
u' w4 K4 P B& w# y- Z& Z3 G - (setq dhGrw (/ bhfac lr))
0 k* A. Q9 ^) P* D( j0 | - (if bvfac (setq dvGrw (/ bvfac lr)))
U* y: Q4 x# r( ~ - (setq angle 0.0)
2 {' P- |# g- Z g - (if bvfac% K8 B/ x l! K) \
- (setq distnc strad dv 0.0)
# _ o0 g# @9 D4 b - (setq distnc 0.0)
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- (if bvfac
$ w- }' c- {3 A$ O- m# I - (command "3dpoly") ; 开始绘制弹簧! `8 @- o# m& [% A' k5 U
- (command "pline" cntPoint) ; 从基点开始绘制弹簧
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' [- v7 ]% V6 _0 [( c - (repeat nRepeat 6 |' d) L0 \/ r0 F" y
- (repeat lr
, B: `7 |9 c( L- S& M - (setq tp (polar cntPoint (setq angle (+ angle aGrw))
( V' c, _# a# } - (setq distnc (+ distnc dhGrw))
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- (if bvfac
$ |+ u3 |# s/ ^2 x - (setq tp (list (car tp) (cadr tp) (+ dv (caddr tp)))6 E( n8 T( c% p
- dv (+ dv dvGrw)
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9 b. a4 j9 X6 }) X6 ] - (command tp) ; 继续输入下一点
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6 F! l2 K1 g# F2 I4 n3 V2 O - (command "") ; 输入结束
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- ;;;! q$ Z, F% K- K. j' \
- ;;; 生成三维弹簧函数调用接口) ?. J( g# H0 k9 [! y
- ;;;
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6 A# u% z7 E" h- (defun C:3DSPRING (/ olderror cmdch blpmd cntPt RottCnt horiGrw vertGrw bgnRdtn ptCntPerCircle) % u6 ]$ Q7 v. ~- V+ T
- (setq cmdch (getvar "cmdecho")) ; 获取cmdecho值,以便调用结束后恢复
y* f% ^% p- H& }) b1 X2 R$ K, C8 A - (setq blpmd (getvar "blipmode")) ; 获取blipmode值,以便调用结束后恢复; q9 U5 E1 g( K5 B: {+ G0 h L
- (setvar "cmdecho" 0) ; 关闭 cmdecho
7 b, M' ?8 |: n1 ^" Z - (initget 1) ; cntPt 必须非空9 N3 p1 a. h# I9 E
- (setq cntPt (getpoint "
- |7 }! g' T- b. V. [. C9 B - 请输入底部中心点: "))
' p5 W! n" W) g2 z9 x Y - (initget 7) ; RottCnt 必须非零、非空,不可忽略5 i# B1 A; g r: V" ~
- (setq RottCnt (getint "
* l. E" B, ~* U% U1 n" m5 f7 s6 k - 旋转的圈数: "))
3 l9 |+ V- x1 a1 S7 a - (initget 7) ; bgnRdtn 必须非零、非空,不可忽略
% D& ~8 c4 T9 \9 G* z( `; }) |6 ?3 ? - (setq bgnRdtn (getdist cntPt "
" z6 v3 B- j* v. s! X - 起始半径: "))
[0 I+ f4 D- | - (initget 1) ; cf 必须非零、非空
& J- `* M' H, ?/ ]" t - (setq horiGrw (getdist "0 G8 I* h0 y* T& w- [' L4 V
- 每一圈的水平增长距离: "))
3 y2 S& T! n5 f/ ^3 Y - (initget 3) ; cf 必须非零、非空
7 H. X& C6 ?8 E d" o7 n8 { - (setq vertGrw (getdist "
" m( C" H8 j" z& `+ {9 Z. L. m( @ - 每一圈的垂直增长距离: "))1 l' ^/ d, E6 i- A" n7 ?
- (initget 6) ; ptCntPerCircle 必须非零、不可忽略
! V/ R* G- k$ v - (setq ptCntPerCircle (getint "
( L, m& S' r7 {: Y# h - 每一圈的插值点数<35>: ")): f) G! ^% y: Y# ]
- (cond ((null ptCntPerCircle) (setq ptCntPerCircle 35)))
! g7 N, k8 X- q/ j1 s; [# ~ - (spring RottCnt cntPt horiGrw ptCntPerCircle bgnRdtn vertGrw)
6 X$ h$ U0 w0 E4 q/ k8 A - (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值
0 U E( X2 n# p0 [$ Q - (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值
6 T2 B; y e3 R5 Y - (setq *error* olderror) ; Restore old *error* handler
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