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弹簧源程序0 X: N: I' ]4 h/ _" r4 i
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- (defun errMsg (s) ; 当命令执行时出现错误 9 ]' }$ U Z$ n8 y4 O* G+ J" J5 B
- ; 例如用户按下了CTRL + C. u' d5 C/ G# e- S
- (if (/= s "Function cancelled"). P6 G' A! `: b5 n. G% {* W
- (princ (strcat "
+ w8 c6 E+ D3 Y& `" i/ C* V) t$ z - Error: " s))& o) F/ d3 J4 w7 |
- )
E6 \- l' ^4 a! y - (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值 w& a( ~& y& h( r0 d$ {
- (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值& ?% x3 ^+ S/ _6 T
- (setq *error* olderror) ; 恢复旧的错误处理1 d1 c) y4 f! E1 r) i5 V
- (princ)
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- (defun spring (nRepeat cntPoint bhfac lr strad bvfac$ E& t: X) [& G- P7 i. R
- / angle distnc tp aGrw dhGrw dvGrw Pi2 dv)
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- (setvar "blipmode" 0) ; 关闭 blipmode
# n5 Y) A1 \% N4 i, ` - (setvar "cmdecho" 0) ; 关闭 cmdecho
, Y$ ^, E) z/ J! N4 M! W - (setq Pi2 (* 3.14159265 2))
8 V& D- i7 S' ]' g; h2 c( J - (setq aGrw (/ Pi2 lr))# [- U1 ]/ n! c1 Z6 w; B$ v; p7 ?
- (setq dhGrw (/ bhfac lr))
|1 J' B. J- [9 {7 O) B7 { - (if bvfac (setq dvGrw (/ bvfac lr)))9 o# s" b4 A6 B8 o7 R
- (setq angle 0.0)* `* g; v/ a" f, T" {7 g+ m2 X
- (if bvfac
- a/ T. o/ x+ g" U - (setq distnc strad dv 0.0)
' b1 A: }1 D" H/ v u9 G5 z/ J* q - (setq distnc 0.0)
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- (if bvfac ( c1 N; g) Q: V, u# i( E- w
- (command "3dpoly") ; 开始绘制弹簧% j8 ]3 l; y& | M, P y" H% r
- (command "pline" cntPoint) ; 从基点开始绘制弹簧* G- {1 g; P6 }2 G3 y+ Z7 N
- )
! y v& d$ [, S* W L+ M9 c - (repeat nRepeat
" l8 x, ~1 J; Z# {3 R4 D - (repeat lr
: j ~/ O5 l I+ I j1 d7 O _ y - (setq tp (polar cntPoint (setq angle (+ angle aGrw)), f& d* m3 H( `- I/ ]
- (setq distnc (+ distnc dhGrw))
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$ l' w! e. B) i - )
3 _% {9 |0 ^7 s - (if bvfac
2 G1 X5 m. H$ @" y! n - (setq tp (list (car tp) (cadr tp) (+ dv (caddr tp)))
8 W( S8 b/ Q1 H0 G" d- G0 D2 c S - dv (+ dv dvGrw)2 b: m! I1 s6 P! k
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, H' L3 v4 @" h. z9 m - (command tp) ; 继续输入下一点
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5 |) q! @& }& R, m7 s: X$ V - (command "") ; 输入结束
0 Y4 h3 \# |$ F! N - (princ)
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- ;;;. T+ P. T( T4 z5 M
- ;;; 生成三维弹簧函数调用接口
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% G' C. ^# d5 O2 E9 R% n; j- (defun C:3DSPRING (/ olderror cmdch blpmd cntPt RottCnt horiGrw vertGrw bgnRdtn ptCntPerCircle) % |% M. J: ?- N; ?' r e( t
- (setq cmdch (getvar "cmdecho")) ; 获取cmdecho值,以便调用结束后恢复' {3 X4 s2 z4 m' L8 j! N- q
- (setq blpmd (getvar "blipmode")) ; 获取blipmode值,以便调用结束后恢复# Y% Q( ]: w( J( L1 N( _
- (setvar "cmdecho" 0) ; 关闭 cmdecho
5 ^2 C7 C2 z; @! }. X - (initget 1) ; cntPt 必须非空5 A2 t% k3 V1 }; h3 Q6 c
- (setq cntPt (getpoint "
% G6 @0 H: H1 n - 请输入底部中心点: "))
' k- B7 _3 Y4 c6 \ - (initget 7) ; RottCnt 必须非零、非空,不可忽略
) a/ L7 b( u; Z% F( @ - (setq RottCnt (getint "9 t: J* m' F s% D; \# q1 o
- 旋转的圈数: "))4 b# t# H C5 W: H9 o$ I% D
- (initget 7) ; bgnRdtn 必须非零、非空,不可忽略
7 G' j9 L Q; e9 i+ Q4 ` - (setq bgnRdtn (getdist cntPt "7 w8 w4 |- H" g/ z
- 起始半径: "))/ n1 G* q2 p' e7 W' n: `7 j
- (initget 1) ; cf 必须非零、非空/ b1 l6 k6 l$ W+ O: Y5 ?8 x! \
- (setq horiGrw (getdist "
& }$ P+ I' @' l' w" _5 A - 每一圈的水平增长距离: "))# X) v3 S" d7 f; e" A
- (initget 3) ; cf 必须非零、非空
. \# |7 Q* O/ j4 r+ n% o - (setq vertGrw (getdist ": n; a* r# E' r7 k! w8 v/ n; Z
- 每一圈的垂直增长距离: "))
: N4 R# C9 Z( ~* n8 w# K" } - (initget 6) ; ptCntPerCircle 必须非零、不可忽略
x H. `8 {# x' D8 Q - (setq ptCntPerCircle (getint "/ ~0 C9 ?! d9 A+ A; R
- 每一圈的插值点数<35>: "))) j, u6 V, ]* `
- (cond ((null ptCntPerCircle) (setq ptCntPerCircle 35)))
2 b, j$ i# g) v) s/ r9 I - (spring RottCnt cntPt horiGrw ptCntPerCircle bgnRdtn vertGrw)
+ W% {2 f7 \+ _$ O. i% _ - (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值- e; m. o2 E4 \9 ^. v: p; G
- (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值* r& R" }4 k* `( H2 Q9 E4 a$ j9 f
- (setq *error* olderror) ; Restore old *error* handler% Q, i1 F& X, E2 Y& S
- (princ)* q8 ~: D5 I& |: U4 |
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