此文系转载，转载自哪里忘记了，原作者是谁也不知道。有知道的可以告诉我，我在帖子里写上
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$ K3 U* |$ L1 _" e不再神神秘秘，齿轮轮齿渐开线、螺栓、弹簧autolsp源程序大公开，源程序见下面：
0 r4 @. J/ a7 E: q. W一、齿轮轮齿渐开渐开线& |! [4 U4 n2 l i5 R0 C
; K" _, m4 }6 }6 d' ^* {- (defun c:gear(/): f$ U+ B) e4 I1 h, v+ r
- (
2 v2 `3 \) F1 w$ U1 B! k3 }0 F, u' J - setq
! T" b% M$ ^# v' N. U+ K. y - p0 (getpoint"输入齿轮中心p0: "); ]3 M% A7 X$ c/ Z6 L
- m (getreal"输入齿轮模数M: ")1 J: r+ E& e3 a' V$ A" W
- z (getint"输入齿轮齿数Z: ")4 Y! E9 g& R; l' K, A+ ^9 L4 V5 x+ ^
- ha 1
g- n) k; k' i C$ k" @$ U - c 0.25$ I' J! k- o5 U% h
- a (/ pi 9)
% a; A! o" t4 }7 v - ra(/ (* (+ z (+ ha ha)) m) 2)1 l3 Y6 d) d5 S4 Q
- rf(/ (* (- z (+ (+ ha ha) c)) m) 2)
: w+ L; @' i' d% z4 i3 x - r(/ ( * m z) 2), x, I$ Y [) R/ C4 o4 ]! R
- rb ( * r (cos a))' s2 q7 K) X8 K# Z
- ri rb
$ ~ J- q: S& ]( d0 Q, _ - ang 0
/ P7 T6 c% V8 N4 N# S0 ? - g (polar p0 ang rb)+ J( @$ y% i- M/ S- M. y2 r1 T( L
- )
0 a8 T7 B; q8 f - (command "circle" p0 ra)
# @! ]! ?' V5 | - (command "circle" p0 rf)2 l/ M) ~! ^/ g! @2 v% |5 j, F
- (command "circle" p0 r)
4 C7 U$ W. \( |: N' G2 A% V' @/ z - (command "line" g)
7 r' R# p# z% Q% o# w0 T - ) `4 V" C( M% c( E
- (while (< ri ra)+ i; X8 f# s+ m5 V7 U7 w, f
- (setq
& H5 U% V2 X, N6 l( \+ v - ang ( + ang(/ pi 360))& S" ]& b2 e5 D0 H, Z
- ri ( / rb (cos ang))5 o0 `/ A& w# Z+ E
- cta ( - (/ (sin ang) (cos ang)) ang)
# K; i3 O, M$ T7 t2 M - g(polar p0 cta ri)
3 U2 A0 g r5 N; ^5 y+ B0 V- \( H" @, h - )
- q: g* D6 R8 S F) A, }
/ d' i3 L$ z' K; O, L- (command g)/ Y4 ^- ?0 z) g3 v$ I9 d( v
- )
1 W4 w6 G% y4 q" @ - (command ) % l' S! C2 `+ f' Z
- )
$ g+ b$ }( n; `9 @' u
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: l* R1 C& _ e
二、螺旋源程序* e: Q1 r2 c/ {* { o! a
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- (defun errMsg (s)
1 r ]0 n1 e2 q6 H6 D( S - (if (/= s "function cancelled") (princ (strcat "+ `1 t* [$ B5 U o5 O& s0 X
- Error: " s)))
4 Y. ?$ a( P" q- G6 Y) V, L& \! j9 ~ - ; 当命令执行时出现错误6 s' o0 T9 K1 |! w9 V- a
- (setvar "cmdecho" ocmdold) ; 例如用户按下了CTRL + C
' r8 B8 _2 \# G/ ?& q- |' _ - (setvar "osmode" osmold)
& z+ K" n$ Q% r, A: t7 j - (setq *error* olderr) ; 恢复旧的错误处理0 f4 S9 Y9 `2 Q0 f, c
- (princ)
1 B- f! e" m& Y+ z# f - )
; l" W, A3 Y8 z - * p1 x6 {0 V& ]7 x
- (defun c:3Dthread (/ radouter threadpitch threadlength threadangle ; i) E# Y5 ]* y1 f# ~# a
- ptStart innerdiafactor radmid radinner ocmdold osmold 4H 5H 6H h6 g6)! y0 |+ F4 _' a- }; _) I6 s
- ;-------------------------------------------------------------------' T e6 O P z8 z. ^
- ; 获取公制外径大小、螺距总长
^ t/ ~# ~' {" k4 {# @+ [ - ; 然后计算一系列几何点4 Q, A7 F i% e& l8 S$ j: |
- ; 并且关闭对象捕捉、命令回显
% q5 n* E9 O' e! _ g0 l - ;-------------------------------------------------------------------
8 I1 K5 R9 }+ u: r$ k+ | - (setq 4H (list 0.0015 0.002 0.002 0.0025 0.003 0.0035 0.004 0.005 0.006 0.007 0.008 0.009 0.010))
! N* ~- @2 l( y: o: V - (setq 5H (list 0.002 0.0025 0.003 0.004 0.0045 0.0055 0.0065 0.0075 0.009 0.010 0.0115 0.0125 0.0135))
5 v9 b& V& u, n b5 ?. p9 z0 x - (setq 6H (list 0.003 0.004 0.0045 0.0055 0.0065 0.008 0.0095 0.011 0.0125 0.0145 0.016 0.018 0.020))
# u K' ~ ]" L3 i# N' w - (setq h6 (list -0.003 -0.004 -0.0045 -0.0055 -0.0065 -0.008 -0.0095 -0.011 -0.0125 -0.0145 -0.016 -0.018 -0.020))
, K1 _1 I( l$ h# I - (setq g6 (list -0.005 -0.008 -0.0095 -0.0115 -0.0135 -0.017 -0.0195 -0.023 -0.0265 -0.0295 -0.033 -0.036 -0.0515))
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4 b9 _* G; g6 G$ M& V9 ?' W* i- (setq osmold (getvar "osmode")) ; 保存调用前的osmode系统变量值9 O! f+ x' k4 ^% r* D5 z3 A
- (setq ocmdold (getvar "cmdecho")) ; 保存调用前的cmdecho系统变量值! C' w* S2 a- D* _ B
- (setvar "osmode" 0) ; 关闭对象捕捉
; B! }6 e8 D% X [ - (setvar "cmdecho" 0) ; 关闭命令的回显9 I3 J! K) L4 g
- # z$ H$ I/ y4 h! t: Q0 M# h$ Q
- (setq innerdiafactor 1.5) ; 设置内径系数* K4 [/ p* _! X
- (initget 7) ; radmid 必须非零、非空、非负
& U- {/ K9 u# ~$ { |5 V: ` - (setq radmid (getdist "# w6 k, T7 C1 Z
- 公制外径: "))2 R0 Z) V3 c3 j# E, B1 O' o
- (initget 7) ; threadpitch 必须非零、非空、非负
1 o$ K) m8 o3 a1 J/ y4 ` m - (setq threadpitch (getreal "1 i: k/ o8 N& F+ y
- 螺距: ")), h9 g: j8 t+ Z' Q
- (initget 1) ; ptStart 必须非空
+ ^. ]# c+ U! F8 T2 k! A& d - (setq ptStart (getpoint " t* X: m! T4 E# e: Y
- 起始点: "))
8 G) l4 B- w$ K - (initget 3) ; threadlength 必须非零、非空、非负
6 y/ N5 O3 ~/ ?, `5 r6 C - (setq threadlength (getdist "
7 z& x& m2 k2 M- K2 M5 y* [ - 螺纹总长(Y方向): ")); R+ O3 a2 y2 V: }/ X; h
& h/ z+ p9 q) e; _: G, t- ; 对公制外径添加公差
) k) D8 y P% j4 ?3 x9 O2 q - (if (<= radmid 3) (setq order 0) ; 根据公制外径确定公差带中位置# r$ A" G* j3 ^: L+ ?9 F8 l# J
- (if (<= radmid 6) (setq order 1)
# [4 N4 D/ r" `1 S. L$ ~ - (if (<= radmid 10) (setq order 2)2 @2 `+ H% I! [' h$ P7 B' k5 a% f
- (if (<= radmid 18) (setq order 3)
0 h( I+ ]* o0 r& O5 s( y3 Z* d - (if (<= radmid 30) (setq order 4)6 K9 e3 w7 K0 K' b# x1 P. T7 D
- (if (<= radmid 50) (setq order 5)9 K" {3 n4 z. g0 w! a3 `
- (if (<= radmid 80) (setq order 6)$ a+ g5 K* Z- T: c& P1 c5 P( V* e
- (if (<= radmid 120) (setq order 7)+ S4 p$ G; y: p: q( P% v
- (if (<= radmid 180) (setq order 8). K) J; q W3 M' h. |
- (if (<= radmid 250) (setq order 9)% `# ^+ m+ b' F& h
- (if (<= radmid 315) (setq order 10)0 T5 r4 V2 s( |+ d! C- z# z2 s w) n
- (if (<= radmid 400) (setq order 11) L5 Q( r, B! m. Z2 J; V o8 O' C
- (if (<= radmid 500) (setq order 12)( A9 o9 m! f% `0 X# ~
- )))))))))))))
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7 t |4 n5 x' o j! ?4 C$ z- (if (< threadpitch 0.25) (setq radmid (+ radmid (nth order 4H))) ; 根据螺距确定公差带# P/ C9 d& K2 T% V* H4 e7 o
- (if (< threadpitch 0.35) (setq radmid (+ radmid (nth order 5H)))/ z' X# x0 a; V5 T; Z$ ^* U; p. q
- (if (>= threadpitch 0.35) (setq radmid (+ radmid (nth order 6H)))
8 h0 d: [; n0 p7 h - )))$ n6 I9 o2 }* b4 g5 }, O ^! S
- % ~. g# X. `! a) v) ?2 g- g
- (setq h (* 0.866025 threadpitch)) ; 计算齿高
9 T. \" Y/ Z5 m: E' h! \ - (setq radouter (+ radmid (/ h 4))) ; 计算外径/ `8 w$ j6 W& O8 k( l: i5 ]6 ?
- (setq radinner (- radouter (* h innerdiafactor))) ; 计算内径4 Z: D8 t$ R1 g7 C) V+ q
- (setq threadangle (+ 30 0)) ; 计算齿顶角
" |5 [, w5 O/ h- E. y H8 N
* P! k+ J( O4 R3 n& F+ c- (auxithread radouter radmid radinner threadpitch threadlength threadangle ptStart) ; 调用绘制三维螺纹的子函数
W4 p- u8 U. a! s - % q1 q: I, ?) \7 | n* @
- (princ "; n/ Z8 q, q1 ]# I( X( r. J
- 三维螺纹创建完成")
- S" m# T! P0 D8 T3 ] - (setvar "osmode" osmold) ; 恢复调用前的osmode系统变量值: z9 u4 O1 S$ y y; U0 x3 `" W
- (setvar "cmdecho" ocmdold) ; 恢复调用前的cmdecho系统变量值
! t6 M7 o/ l3 W) Q - (princ). H" Z- h! ~ z, T
- )
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- (defun auxithread (radouter radmid radinner threadpitch threadlength threadangle ptStart / ttal pt1z ang pt1a
6 t, U9 B7 F3 e8 }; B* u: Y( w - pt1az pt3a pt1b pt1bz pt3b pttmp1 pttmp2 pttmp3 pttmp4 pttmp5 pttmp6 pttmp7 pttmp8 pttmp9 pttmp10 pttmp11 pttmp12 tstmp startcone endcone)
! c4 e* Z+ S# A) X+ G! `- _) D/ C
# u) O& E# A, i( M- ;(command "undo" "begin") ; 开始undo步骤
: U3 B) e* S# ^% h5 p5 h
2 r* i% A9 `. K9 u: H2 ]( X! Y- (setq ttal (+ (fix (/ (abs threadlength) threadpitch)) 3)
- J' m1 X) p' R* T/ R5 m$ C - pttmp1 (list (- (car ptStart) (/ radouter 2.0)) (cadr ptStart) (caddr ptStart))
0 f" \1 Z! H7 s4 y- l - pt1z (list (- (car ptStart) (/ radouter 2.0)) (cadr ptStart) (+ (caddr pttmp1) 1.0))( k3 o9 p0 f" d6 i3 o' o2 k L6 L
- pttmp2 (polar pttmp1 (/ (* threadangle pi) 180.0) 1)
+ @! U* l; j6 D. k - pttmp3 (list (+ (car pttmp1) radouter) (+ (cadr pttmp1) (/ threadpitch 2.0)) (caddr ptStart))7 [, a: l/ O7 |& V# u, Q$ t1 k
- ang (angle pttmp1 pttmp3)
$ @3 y$ I8 n% s - pt1a (polar pttmp1 (+ ang (/ pi 2.0)) threadpitch)
3 ]0 |' i% d8 d% M, h - pt1az (list (car pt1a) (cadr pt1a) (+ (caddr pt1a) 1.0))
3 Y; h" h" {2 O$ B! O4 j" X2 s - pt3a (polar pt1a ang radouter)! p5 y# `- B4 g+ A8 E8 a( i
- pt1b (polar pttmp1 (- ang (/ pi 2.0)) threadpitch)
% {& V$ j# d; R8 @ - pt1bz (list (car pt1b) (cadr pt1b) (+ (caddr pt1b) 1.0))
: W& N0 ]2 g$ x - pt3b (polar pt1b ang radouter)" Y; r' j/ V0 c; Q
- pttmp4 (polar pttmp3 (/ (* (- 180 threadangle) pi) 180.0) 1)
/ I! ^+ I' P& I3 Q6 a& t) k - pttmp5 (inters pttmp1 pttmp2 pttmp3 pttmp4 nil)% s9 m# f0 R* T
- pttmp6 (list (car pttmp5) (cadr ptStart) (caddr ptStart))7 Z2 F! \* ^8 p, a1 @
- pttmp7 (polar pttmp1 (/ (* (- 360 threadangle) pi) 180.0) 1)' b- c% C1 _9 L! |0 J" b
- pttmp8 (polar pttmp3 (/ (* (+ 180 threadangle) pi) 180.0) 1)/ X( v( \' ]5 L: p# Z, |
- pttmp9 (inters pttmp1 pttmp7 pttmp3 pttmp8 nil)
# ]5 Q! [- j7 Y0 L) @ - pttmp10 (list (car pttmp9) (cadr pttmp3) (caddr pttmp3))
! z% b7 \8 H0 ?& B U' T - pttmp11 (polar ptStart (/ pi 2.0) threadpitch)
6 i" s0 Z$ U3 h s* d - pttmp12 (polar pttmp11 (/ pi 2.0) (abs threadlength))# `4 Q. M' T2 z- D
- ); k& E) F5 Q- t* T# b5 _
7 ~0 ~, a+ S3 m* M# ~8 C9 m, X2 f- ;-------------------------------------------------------------------) A" c* T; B* O& d, |3 i/ {, o5 i0 Z/ |
- ; 绘制两个倒置的并偏移1/2螺距的圆锥+ H1 R z$ _, `2 _' ^/ I
- ; 这两个圆锥都以中剖面剖分
0 c: g3 H! V! t$ W6 _* E) b q - ; 进行并集运算
: a/ x- w* d( T& Z: F - ;-------------------------------------------------------------------
' i6 ?% B# [* p! C" J2 a: m% e
3 _' w. G6 j8 f0 Y* Q) Z- (SETQ startcone "order")
% O* j% B% L/ y E/ Y0 [/ D - (SETQ endcone "Y")0 }- V4 Q# _" Z* @# U
- (command "zoom" "w" (list (car pt1a) (+ (cadr pt1a) (abs threadlength)) (caddr pt1a)) pt3b)
/ j! y( l/ d5 o3 @% s - * i* s5 P6 V" j. N& B; {0 e/ J8 z4 I
- (princ "
! u/ W( k( T4 H% g% {4 d - 正在绘制三维螺纹，请等待")
& {3 M+ R+ C: { - (command "pline" pttmp1 pttmp5 pttmp6 "c")& V( T! l( m* c
- (command "revolve" "l" "" pttmp5 pttmp6 "")8 a/ n$ g' {9 q; a- u* A
- (command "slice" "l" "" pttmp1 pttmp3 pt1z pttmp5)
0 t- o3 v4 e: U& G6 r& _- ] - (command "slice" "l" "" pt1a pt3a pt1az pttmp3)$ j$ Q7 T8 r# H0 J+ B6 @& m
- (setq tstmp (ssadd (entlast)))! `, _3 S4 M( z# F! I+ W
- (command "pline" pttmp3 pttmp9 pttmp10 "c")0 s& O0 ?" n8 D" z2 u5 ~
- (command "revolve" "l" "" pttmp9 pttmp10 "")# H& Y& U2 v5 w: N
- (command "slice" "l" "" pttmp1 pttmp3 pt1z pttmp9)
. f6 }4 J7 N; ]0 w7 b* B' k! u4 d - (command "slice" "l" "" pt1b pt3b pt1bz pttmp3)9 T9 Q' x4 h6 @2 Q
- (setq tstmp (ssadd (entlast) tstmp))6 C4 e% G* v" H; g7 d" v& t
- (command "union" tstmp "")
8 j1 \& d! s& E( T! w1 q - 1 j/ H9 t" R3 v, C* ^& B
- ;-------------------------------------------------------------------
$ a7 \" K- Q7 Y: @/ m - ; 上面的实体被剖切成两份，然后进行镜像以获得螺旋线的螺旋
( I8 |: S- E# M$ Z$ Q, c. A - ; 单线的高度实际上等于两倍螺距，但是超出或者是在内部或者是
: ?' V0 `- O' v8 A* [ - ; 在最后一步被切除
$ K7 ?5 [& F! w4 | - ;-------------------------------------------------------------------
; b% ^( ~$ t. `' o - % u) f- g# L8 s/ W; l
- (command "slice" tstmp "" "xy" ptStart "b")
- c/ F% R0 P7 m8 H- Z2 ` - (setq tstmp (ssadd (entlast) tstmp))
& s2 L% T8 S7 d% R3 U - (command "mirror" "l" "" pttmp1 "@10<0" "y")
. v! s+ y8 n: {1 a - (command "union" tstmp "")
( n! _& u, c8 M& \! z
+ x! [' `' _+ a& `1 N" \- ;-------------------------------------------------------------------
5 J- l. N7 s8 D - ; 螺旋进行阵列操作，然后再作并集（可能会耗费一定时间）
4 w: k& n+ p3 O1 k0 z - ; 得到的实体再切除到指定的螺旋高度
5 L( D0 h% t! h - ;-------------------------------------------------------------------
4 [5 H' F9 X+ V$ [
9 Q3 H* a; o: e' R; u' t- (setq e (entlast))& j' z5 C9 b# J$ i$ [
- (command "array" tstmp "" "r" ttal 1 threadpitch)0 ^) V, f5 d, T- |0 I
- (repeat (1- ttal)
- _) o) h S9 X- ~ - (setq e (entnext e), n' m# v9 ]" C; t; B X
- tstmp (ssadd e tstmp)
1 l- q: j o5 v _3 `, e& L% Z - )* n8 Z) A1 r2 }" n
- )+ M5 u% @, O+ C4 v* c) a9 p
- (command "union" tstmp "")9 [7 _: j$ u; F1 i( {
L( N2 }4 O5 {6 F# a- ; 若开始创建45度的圆锥( O) N# ]8 D. c( L: G
- (if (/= startcone "order")8 w; a! H/ v K* X
- (progn (setq e (entlast))
' m+ o4 \+ M/ N) _. X - (command "cone" (list (car ptStart) (+ (cadr ptStart) threadpitch) (caddr ptStart)) "d" radmid "a" (list (car ptStart) (+ (+ (cadr ptStart) (/ radmid 2)) threadpitch) (caddr ptStart)))
& o0 m# ~. A9 j - (command "union" "l" e "")
7 f% Q: h* |( \ K - )
' j) t. l# c6 g9 _. H) q( q - )- \5 x: d( h( K) y' h/ W7 i
- ' t: N1 j8 t( \
- (command "slice" "l" "" "zx" pttmp11 pttmp12)
4 y1 G8 D; o1 _* _ - (command "slice" "l" "" "zx" pttmp12 pttmp11)3 b9 x x0 f$ h
- (command "move" "l" "" ptStart (list (car ptStart) (- (cadr ptStart) threadpitch) (caddr ptStart)))
' n+ i4 I6 `& a0 P0 }& U' `- i - 8 \, e6 v6 m4 @# x1 w
- ; 创建最小直径的圆柱体，然后与螺旋作交集( S# o( q; `" N& g( D% Y+ I
- (setq e (entlast))
! C( A/ I1 m1 Y1 z; H - (command "cylinder" ptStart "d" radinner "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart)))4 @' m7 @3 k3 f: Q8 a s
- (command "union" "l" e "")9 n: ?6 F ^5 E) K7 j( U% X6 m
- (setq tstmp (entlast))
/ J8 s# l1 u9 t3 e2 h
. ~" Y( T% r* H- ; 创建中空的圆柱体
8 N. I' ?$ f6 X9 I# J& X) H+ H) c - (command "cylinder" ptStart "d" radmid "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart))) ; minor dia
1 e1 Y! E& b4 W - (setq e (entlast))# F3 f% u7 ?5 b# H
- 2 G. V& r) ?) c
- ; 若最后创建45度的圆锥! z6 b' G# b) b: M6 E
- (if (/= endcone "order")
& O g) L2 P n# o+ i& H - (progn (command "move" "l" "" ptStart (list (car ptStart) (- (cadr ptStart) (/ (- radmid radinner) 2)) (caddr ptStart))) + o5 B G* U7 G7 m2 W+ R
- (command "cone" ptStart "d" radmid "a" (list (car ptStart) (+ (cadr ptStart) (/ radmid 2)) (caddr ptStart)))
: I! g/ k2 u( W$ V( o0 z - (command "move" "l" "" ptStart (list (car ptStart) (- (+ (cadr ptStart) (abs threadlength)) (/ (- radmid radinner) 2)) (caddr ptStart)))
q$ H7 X% A$ e2 }. C2 Z! \ - (command "union" "l" e "") / F) Q/ g( @4 r) o) ?
- (setq e (entlast))
' V& \' l4 U6 n$ e. Q& E - )4 t2 h3 Q5 S, ]" z5 a! `* N! l& c
- )) ^" A7 ?$ L' S, O# h' ]
& c: `* Q$ [0 t1 h! O" N- ; 从大圆柱中减去小直径圆柱
9 X/ [, o7 _. ]. f" c& o& W/ m - (command "cylinder" ptStart "d" (* radmid 1.5) "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart)))
+ s( [0 Z; h9 Y$ n - (command "subtract" "l" "" e "")7 K, D5 y, _, }' o; f- S
- (setq e (entlast))4 w4 R2 T- }1 y# V) T4 W, g
- 5 [; F+ _1 o, y. [1 L* m( @( V; c
- ; 从螺旋中减去圆柱. j5 h2 w% A( I" A; w
- (command "subtract" tstmp "" e "")( S3 N" K6 i6 {5 M
- 7 c, |% ^. }! Q$ G+ {' x1 u
- ; 如果螺旋长度为负然后镜像
% I! D. J( H0 z; w - (setq e (entlast))
# O; F2 h5 c, \ - (if (< threadlength 0) (mirror3d e "zx" ptStart "y"))9 Z5 E( ]- D9 |/ {( M/ Q! h# L% D
9 ]- X. ?( M0 Q" b7 f5 x- (command "zoom" "p")( `6 n: _0 b0 U+ A; q, V
- ; (command "undo" "end") ; 结束undo步骤
. F4 R0 q" c3 l# E+ ^1 ^$ r- Q6 b - )9 H3 B R3 a% ~; x0 T% ~
- 4 @/ C( W) J( }* F9 e4 |
- ;;;---------------------------------------------------------------------------------------------------------------------;% h7 }' H: O! J. y+ X
- (arxload "geom3d" nil)
4 Y( ?8 W4 n) a% K! V# @ - (princ "
+ Q9 P4 F+ e- I0 r - 3DThread 已加载。 ")$ v; b8 ?6 \# P6 f3 M' s* F7 j
- (princ)6 C# R/ d$ z. q9 W$ S
# K9 n6 ~7 e$ w& y4 j! F
7 }8 s6 o2 l+ X7 `- k) ? W" F
/ P/ k. X$ s/ |: s8 J三、弹簧源程序
$ L1 c' ?: ?- u8 }- (defun errMsg (s) ; 当命令执行时出现错误
( } w* o3 d/ S/ R/ _' V& S+ {/ L - ; 例如用户按下了CTRL + C
! k- h' g: z/ b, T - (if (/= s "Function cancelled")+ X% R9 h* ^' [0 x4 \
- (princ (strcat "
' ]8 y/ S* Z" K/ U( j0 M - Error: " s))
! p! ^+ w4 {8 {4 L" C - )4 {2 ?- f, v) B! A: J1 B. d
- (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值
! ?5 y! G. v% m) n# T% P+ u9 R - (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值
" k8 u" o! H/ g% L0 S, u2 J8 A - (setq *error* olderror) ; 恢复旧的错误处理% n! F" n. X+ Z" p5 E
- (princ)
: ?5 T# ~- B0 D5 h" z - )( p1 Q* L" |+ r/ |( I' A) x
' Y' Y6 R( ~ k8 m- (defun spring (nRepeat cntPoint bhfac lr strad bvfac* `0 @, v4 b: ^$ F5 k
- / angle distnc tp aGrw dhGrw dvGrw Pi2 dv). {1 B% h, S9 \+ I
- . k2 t9 @- e& x% w! b, M" H! M
- (setvar "blipmode" 0) ; 关闭 blipmode
* q' ]5 `0 w, e* L% ]! | - (setvar "cmdecho" 0) ; 关闭 cmdecho- }7 q( x. J+ ?/ h. i- _
- (setq Pi2 (* 3.14159265 2))0 E9 p( I4 H8 W$ K! r
- (setq aGrw (/ Pi2 lr))
\, N* a' }. F, W - (setq dhGrw (/ bhfac lr))- G5 H; o* |' r3 P* q8 l
- (if bvfac (setq dvGrw (/ bvfac lr))). f1 l/ T8 X# X
- (setq angle 0.0)
+ j" c+ B8 Z0 u; i; L - (if bvfac4 j5 }% Z4 ^& I! F; p! v& n
- (setq distnc strad dv 0.0)
: z. n5 B `! y# h/ m& y, D - (setq distnc 0.0)
1 \0 n3 Y2 M( y$ f7 Z# O* \0 S - )8 S! K; K, Y# X& V
- (if bvfac ) _% N) _( x) A' \4 ~2 \) {
- (command "3dpoly") ; 开始绘制弹簧4 Z3 @- }1 E5 S6 }4 \3 Q
- (command "pline" cntPoint) ; 从基点开始绘制弹簧
8 m7 w. i k4 X" `7 K" k$ ^ - )
0 n* L! @' d" N8 U- t* F - (repeat nRepeat % M+ Z. |* L# U8 m3 P% t
- (repeat lr 0 P8 A' ]! f8 y* e" B5 f
- (setq tp (polar cntPoint (setq angle (+ angle aGrw))' G/ P6 n% l4 y, a1 B9 T
- (setq distnc (+ distnc dhGrw))& M( P# L! h% {6 V2 ~3 ~, k! ?
- )4 W8 ~+ Y, C/ `/ S* h0 f
- ); ~( D4 e9 w. [8 m# ]
- (if bvfac4 S; ~) j* _3 ?! ?" |& m
- (setq tp (list (car tp) (cadr tp) (+ dv (caddr tp)))
( t) `6 g& Y% `8 \ M5 y - dv (+ dv dvGrw)! X) ^0 H) E( e( M# W/ ~
- )0 n% V$ |, n3 R4 j W/ ^
- )
% G {' t4 m% G( `5 b2 p8 o1 A - (command tp) ; 继续输入下一点
: t7 p1 g- ~0 c$ d+ N+ ~ - )
+ u! q$ H9 N, c( K9 x5 X - )
7 x' H/ }" f2 b5 G - (command "") ; 输入结束0 a% j7 f4 s* B5 T
- (princ)
* C; Z: Y! c: Z7 F3 j/ V1 K - )
4 D F& |& q7 z. Q- S0 o- Z - ( i4 ]3 Z) y- a' E; v/ Q7 T
- ;;;$ B; J% k3 Z+ f6 A6 W
- ;;; 生成三维弹簧函数调用接口
) d# P, V" k) ]: ^$ i( q - ;;;: I3 L3 A- Z" Q; R2 t
2 Z2 ]9 q. h7 z* K! x9 G& o F8 U- (defun C:3DSPRING (/ olderror cmdch blpmd cntPt RottCnt horiGrw vertGrw bgnRdtn ptCntPerCircle) $ r4 C' n% h v3 i9 N( s! j8 x
- (setq cmdch (getvar "cmdecho")) ; 获取cmdecho值，以便调用结束后恢复. n" T6 u* v5 J7 ]9 \7 v3 _
- (setq blpmd (getvar "blipmode")) ; 获取blipmode值，以便调用结束后恢复
& e* }9 _& C$ d3 z3 k - (setvar "cmdecho" 0) ; 关闭 cmdecho
3 T) x, E8 C2 y) k3 @; {: i, q- b+ m1 { I - (initget 1) ; cntPt 必须非空4 D' ~" j' c2 j# H, w
- (setq cntPt (getpoint "
; q( r0 I: n* K& i2 l- g- l - 请输入底部中心点: ")): m3 P/ Q( u. n1 X" W1 J
- (initget 7) ; RottCnt 必须非零、非空,不可忽略
" H8 e" S) |3 L1 T - (setq RottCnt (getint "+ g- D [$ |: p9 M" j. w T
- 旋转的圈数: "))) \ F- m2 h9 P; S; r
- (initget 7) ; bgnRdtn 必须非零、非空,不可忽略# S/ s% K& T$ f
- (setq bgnRdtn (getdist cntPt "5 i' l7 w# {% C
- 起始半径: "))
# E; `% O0 Y% y. O; N1 y; J& x - (initget 1) ; cf 必须非零、非空- d6 y( A/ w! H# S: c: K
- (setq horiGrw (getdist "
# X5 Q& E7 r# k! z - 每一圈的水平增长距离: "))
+ `5 B4 c6 ~: F; {8 Y3 Y - (initget 3) ; cf 必须非零、非空* O: `' d9 l( z! K; ?# x
- (setq vertGrw (getdist "% o# x' `* h w5 g0 W
- 每一圈的垂直增长距离: "))8 J% q, C' t+ W
- (initget 6) ; ptCntPerCircle 必须非零、不可忽略5 U1 g2 O, V. |: t
- (setq ptCntPerCircle (getint "
( ?/ y- F( H; g6 R - 每一圈的插值点数<35>: "))1 W: u3 T3 G# I: }5 h
- (cond ((null ptCntPerCircle) (setq ptCntPerCircle 35)))
7 |8 h7 I4 C; e6 K0 m4 r7 q2 j4 p* ] - (spring RottCnt cntPt horiGrw ptCntPerCircle bgnRdtn vertGrw)
! Y# ~4 p$ [% y' M3 k - (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值
( V1 N% C' `9 b - (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值
# c- e1 |: _9 H9 t" R: P - (setq *error* olderror) ; Restore old *error* handler
0 `4 n3 u/ l0 V. j% S$ I/ N5 [ - (princ)
4 V7 o g1 h7 N0 ]9 W6 O/ u& F - ( `" o$ B, w. g$ {
- ) " s# L) ~, t0 J4 C v: I
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发表于 2006-4-14 13:10
发表于 2006-5-5 10:43
