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弹簧源程序
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0 X9 [6 O6 Q, m$ R3 G- (defun errMsg (s) ; 当命令执行时出现错误 # Z3 |$ D, b9 |5 g. w1 j; ]
- ; 例如用户按下了CTRL + C3 U, w! [3 e6 A* D, s7 _1 S- I/ V
- (if (/= s "Function cancelled")
& y) V; x1 t( q: d - (princ (strcat " o0 w; n) @7 r3 H/ M$ o {
- Error: " s))
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- (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值
/ V& B0 M* t- N3 B/ }6 V - (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值- @0 X& p# \$ S& k+ q: Y
- (setq *error* olderror) ; 恢复旧的错误处理
! {" S' ^4 ]* [) B/ n - (princ)
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" e& C: @; u/ v! q. Q# b$ Q- (defun spring (nRepeat cntPoint bhfac lr strad bvfac
7 |, P) P+ ^+ w$ @ - / angle distnc tp aGrw dhGrw dvGrw Pi2 dv)+ u# q) O/ \. M- c' A
8 R! J1 E7 d# R- (setvar "blipmode" 0) ; 关闭 blipmode
+ s& E. C, c& s- _ - (setvar "cmdecho" 0) ; 关闭 cmdecho
/ ~5 t& \; z: h2 h8 W6 R- c - (setq Pi2 (* 3.14159265 2))7 K) e' n$ h- P, z6 d3 X
- (setq aGrw (/ Pi2 lr))
2 b6 Y$ V% S0 x+ \8 [( c - (setq dhGrw (/ bhfac lr))
+ i* i; P/ H4 Y r. G( `% J - (if bvfac (setq dvGrw (/ bvfac lr)))8 b8 _; H6 W- b) M3 A
- (setq angle 0.0)5 c ?2 x/ n- R* _ V) D$ ~
- (if bvfac
& a) r' J0 t5 e( L5 L. X - (setq distnc strad dv 0.0)" U2 W% K' ]1 r' Z1 ~% p7 s
- (setq distnc 0.0)
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; F- g8 L- ^6 V" X) W - (if bvfac # n3 z* g: [# D& O2 D# S. [; X
- (command "3dpoly") ; 开始绘制弹簧) l. S i1 K5 H- r. X5 O8 T
- (command "pline" cntPoint) ; 从基点开始绘制弹簧
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* \- _6 G, N5 ?* f6 T3 b3 z, r - (repeat nRepeat 0 e0 P* y6 B; g7 y+ c5 \
- (repeat lr ) d: j# x/ c1 A5 E0 R4 u
- (setq tp (polar cntPoint (setq angle (+ angle aGrw))
$ L7 d' a1 U4 W# G& X+ g6 c, k - (setq distnc (+ distnc dhGrw)), J% I) k2 Z+ V
- )
/ @! F' v! V7 z6 f" M - )
9 z0 ?7 F) F# a' M s8 l9 F$ \ - (if bvfac* K& `+ g% E) E; U
- (setq tp (list (car tp) (cadr tp) (+ dv (caddr tp)))* I$ s# _, h4 r1 X; N3 r, @
- dv (+ dv dvGrw)) O- R! S0 c! C
- )
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- (command tp) ; 继续输入下一点' N( W" t$ ^0 I2 o$ @
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- )
! T& M1 W6 |- _9 E5 a - (command "") ; 输入结束! F. b- r. R. }( H' N
- (princ)
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- ;;;
3 c5 J( u& |& Z - ;;; 生成三维弹簧函数调用接口
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+ f& _1 X! H9 c( x% M- (defun C:3DSPRING (/ olderror cmdch blpmd cntPt RottCnt horiGrw vertGrw bgnRdtn ptCntPerCircle) / Y5 I* l+ W. e5 ~6 o7 j8 U0 p! e K
- (setq cmdch (getvar "cmdecho")) ; 获取cmdecho值，以便调用结束后恢复
. w( q" W/ v2 } - (setq blpmd (getvar "blipmode")) ; 获取blipmode值，以便调用结束后恢复
. }5 S* D1 |0 ~: q. h- D. y - (setvar "cmdecho" 0) ; 关闭 cmdecho & T* ?& g# j/ z7 O) t" ^
- (initget 1) ; cntPt 必须非空. `8 S" ^3 `9 c+ E k0 y# T
- (setq cntPt (getpoint "
6 n9 s3 s( ^4 g. r1 ]4 [* G( ` - 请输入底部中心点: "))- u% t3 t* O& o2 {6 B# ]% w) m
- (initget 7) ; RottCnt 必须非零、非空,不可忽略
2 o B9 p1 ?/ @& T1 M - (setq RottCnt (getint ", R \8 h6 q; L" c- o
- 旋转的圈数: "))& I2 M3 o# U+ |: C: @' R
- (initget 7) ; bgnRdtn 必须非零、非空,不可忽略/ ~4 h6 S0 `# f/ Z
- (setq bgnRdtn (getdist cntPt "
8 T* h! ?# F' [2 C: ?0 w8 p u - 起始半径: "))& R# D, f; z W5 d
- (initget 1) ; cf 必须非零、非空
( ?9 e J7 f/ ~6 I; r( L0 W - (setq horiGrw (getdist "/ h5 p0 \3 f) j) G' b9 \# |
- 每一圈的水平增长距离: "))
9 Y9 v, C) J1 K- \* s - (initget 3) ; cf 必须非零、非空% U* L/ C7 B% c3 }% E
- (setq vertGrw (getdist "3 S% I: f. w2 s, j4 E% d- Y: i$ v+ r
- 每一圈的垂直增长距离: "))
) d' H% h8 q; I& @7 c - (initget 6) ; ptCntPerCircle 必须非零、不可忽略
f% }( w' `+ c$ X1 |/ m( \. d% ~ - (setq ptCntPerCircle (getint "
$ a2 D2 \6 r4 c9 M) o - 每一圈的插值点数<35>: "))
9 ?# i( j9 Z. y& T4 `- q - (cond ((null ptCntPerCircle) (setq ptCntPerCircle 35)))
5 S' Z( \9 r/ _( P, j/ {$ a" p; Z - (spring RottCnt cntPt horiGrw ptCntPerCircle bgnRdtn vertGrw)
' g8 w v |$ K9 M$ n - (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值5 ]& p- y" @" g+ r+ [
- (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值+ K4 P, q% A. S
- (setq *error* olderror) ; Restore old *error* handler
8 v. L+ N. [7 w. D' F9 v6 m - (princ)
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发表于 2010-3-13 11:12
楼主