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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; F& ~5 e$ b' ?& U
- ; 例如用户按下了CTRL + C: `; c: ~( j% i3 w5 }- p# c8 A
- (if (/= s "Function cancelled")
/ O) ^& q% w; w6 a, C y - (princ (strcat "% J! S. {. Z9 l4 Z
- Error: " s)) O* H5 y" T! e3 w
- ); s6 i/ q/ x" H0 S7 B
- (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值* P. [+ [. r, `2 e& E
- (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值
* k4 S! r& ]. w' p - (setq *error* olderror) ; 恢复旧的错误处理' A3 C# K" M7 _" x- G& s
- (princ), m" K9 w- N; N
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8 e$ c9 M* @: U# b4 A* w5 S- (defun spring (nRepeat cntPoint bhfac lr strad bvfac2 J1 B% D# V( g5 I) v
- / angle distnc tp aGrw dhGrw dvGrw Pi2 dv)
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, B; G* B, {: u* }8 ?6 m! s- (setvar "blipmode" 0) ; 关闭 blipmode . C+ V8 c3 D0 F6 w; D! N* E
- (setvar "cmdecho" 0) ; 关闭 cmdecho1 Z% f9 A7 u# R( P! l9 V2 U
- (setq Pi2 (* 3.14159265 2))9 n3 X0 ?8 W9 m
- (setq aGrw (/ Pi2 lr))3 a% e8 {0 c3 D/ ]. D" t6 R+ h
- (setq dhGrw (/ bhfac lr))
+ ]- J( L$ K6 o/ D$ Z. R - (if bvfac (setq dvGrw (/ bvfac lr)))7 ^$ C+ o1 R4 n( \
- (setq angle 0.0)
$ A: f& @+ N% @2 R8 {, k - (if bvfac! o$ z: q+ D' |( F# P' L, n: l
- (setq distnc strad dv 0.0)
$ v# _: {* U' Y# [; B - (setq distnc 0.0)
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' x% M5 x: u1 a7 Z2 E. g - (if bvfac
" r/ L! V' X: X1 z1 p - (command "3dpoly") ; 开始绘制弹簧
) Y9 p8 w; h1 R/ y1 V# U - (command "pline" cntPoint) ; 从基点开始绘制弹簧9 e- P4 W; y! D1 ?
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- (repeat nRepeat
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0 W" I/ d+ Y7 _& [ - (setq tp (polar cntPoint (setq angle (+ angle aGrw))6 t! r W+ z3 z: g7 ^
- (setq distnc (+ distnc dhGrw))
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- (if bvfac/ Y* w7 `- h3 a2 n. C7 o
- (setq tp (list (car tp) (cadr tp) (+ dv (caddr tp)))# D& U. W' Y3 Q5 i Q
- dv (+ dv dvGrw)
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- (command tp) ; 继续输入下一点3 q2 A7 B1 S5 W' d
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& @3 J6 P. U% W0 d - (command "") ; 输入结束
9 e5 c% S( S3 g0 _ - (princ)" Q% m& `3 ]2 X; _1 J; g2 _
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- ;;;
% q& q6 {* G# l+ D# m+ J - ;;; 生成三维弹簧函数调用接口* v, O( a* u1 B& p7 a
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3 t, `- _$ L+ i- (defun C:3DSPRING (/ olderror cmdch blpmd cntPt RottCnt horiGrw vertGrw bgnRdtn ptCntPerCircle)
4 } `3 R! B, ^! v - (setq cmdch (getvar "cmdecho")) ; 获取cmdecho值,以便调用结束后恢复% l' ~1 T$ {4 t+ H% |* W
- (setq blpmd (getvar "blipmode")) ; 获取blipmode值,以便调用结束后恢复* e& X; M+ @; |
- (setvar "cmdecho" 0) ; 关闭 cmdecho
' r) o8 R% A- ~$ w) A( y$ _ - (initget 1) ; cntPt 必须非空
8 h- }4 U7 }+ |' D# E - (setq cntPt (getpoint "
2 h8 _) M" L* c% M0 O, r# e) f8 J - 请输入底部中心点: "))
0 ~% w0 V% _0 ]: T: f" C - (initget 7) ; RottCnt 必须非零、非空,不可忽略
3 _2 N, \0 R9 y1 i% n3 L. m - (setq RottCnt (getint ". C2 d# M, F! J" o' `6 ]" |6 q) B
- 旋转的圈数: "))
! D. C' R7 @; Z2 s5 v8 }/ ^ - (initget 7) ; bgnRdtn 必须非零、非空,不可忽略
- j6 ?( c& T: ~; P2 u: A; X. I4 I - (setq bgnRdtn (getdist cntPt "
0 u& L* X! Z/ u! H - 起始半径: "))7 c/ H7 ?8 p% t9 t' E, x7 f N
- (initget 1) ; cf 必须非零、非空* J7 j) f8 I: p2 e( b5 \! a1 ~9 p
- (setq horiGrw (getdist "
+ Z6 b l* G8 l) z - 每一圈的水平增长距离: "))5 H1 h- r) r# W1 L$ g
- (initget 3) ; cf 必须非零、非空
# J1 ]- S- _, T, d" t- G - (setq vertGrw (getdist "
8 S$ h/ o( @" N& \( N; ^5 F2 e! j - 每一圈的垂直增长距离: "))
# A% S; V7 h7 E' C2 i ]7 Q# O - (initget 6) ; ptCntPerCircle 必须非零、不可忽略7 ~4 @% F) y/ [2 x+ y& j
- (setq ptCntPerCircle (getint "
) ?& U; |& s' o* Y% Q - 每一圈的插值点数<35>: "))
* P% J7 W5 i. } - (cond ((null ptCntPerCircle) (setq ptCntPerCircle 35)))
+ v, d" H* p; }0 k$ ?1 Z - (spring RottCnt cntPt horiGrw ptCntPerCircle bgnRdtn vertGrw)
( S: F q- ^* H9 ?, R r - (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值
+ E6 e2 b' F8 w+ ]) m - (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值7 ~: s7 g# f5 G% I4 w' A' p8 R3 M
- (setq *error* olderror) ; Restore old *error* handler r2 a$ Z) F# g0 R
- (princ)
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