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0 z9 m( o& L% e2 c: {; g
3 e4 H/ M$ B- q' w' ]) u T0 O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：
# ~5 f: G Y0 Y4 K, ?一、齿轮轮齿渐开渐开线4 R2 D4 e' N5 H4 i" |$ q2 X
( Y# q. V" |4 Y1 G+ Y/ } C- (defun c:gear(/)5 b2 z" m/ J, h
- (, V2 x. a# E9 u) h2 V" K0 {/ K; j0 [
- setq
& v" i j4 s# ^! c! { K - p0 (getpoint"输入齿轮中心p0: ")1 C3 x$ a9 r8 e
- m (getreal"输入齿轮模数M: ")
: T+ F g6 w* ^! s - z (getint"输入齿轮齿数Z: ")
0 `1 O# p2 V: ^* s# `2 x' M - ha 1
/ b* O/ Y5 f- J6 | T7 B' d7 }$ T - c 0.25+ t& ~$ y& ?& m! j
- a (/ pi 9)
( v6 y' U7 Y! O - ra(/ (* (+ z (+ ha ha)) m) 2) S" S9 v! k8 y- w% l
- rf(/ (* (- z (+ (+ ha ha) c)) m) 2); a+ q. X* V2 z3 l. V5 U; x* a
- r(/ ( * m z) 2)3 `) a: y2 o ]* y9 h1 h2 c4 K
- rb ( * r (cos a))# _3 ^$ ^! d3 G+ f
- ri rb
# D! U8 Y! S" C5 C& { - ang 0
3 ]* h: D7 I4 I/ Y% S+ X - g (polar p0 ang rb)! ^& _6 G+ B# `( ^$ w3 j) m
- )- I7 L7 \1 }8 B- L& K, ^( _2 [5 h2 j
- (command "circle" p0 ra)
7 W2 {3 `' M" y - (command "circle" p0 rf)
5 K- `* T/ P5 R8 ]# v, Q# c% _( l - (command "circle" p0 r)
+ [8 D9 q8 u" x, x% e& a - (command "line" g)
- B u& t2 H# q -
* s, s+ U, p# V/ g7 u' _ - (while (< ri ra)$ U5 K/ o5 R# H3 ^; O6 h
- (setq
. R7 D/ p# f' _) D) M. h - ang ( + ang(/ pi 360))5 H& g$ d' k7 u" W- ^* W+ Y- b
- ri ( / rb (cos ang))
5 W7 S) f3 o, w! ~- q - cta ( - (/ (sin ang) (cos ang)) ang); k( o$ l- u. H9 [' {. h# v% M
- g(polar p0 cta ri)$ U8 W# X. B3 b: p$ _. u
- )
5 ]4 ~) r& X+ t0 e
3 ^2 F. x; b; @0 U- (command g)% ^3 D/ m; T, L4 `
- )
1 i2 t* e. Z1 h/ l3 p! X - (command )
& u" I1 U0 V+ M8 Y - )" M; ~% U8 ~" Q2 _
4 f' Q' \5 V7 G% f) {$ L" m0 X9 ?. P$ T X+ F3 T
- n5 K. A# Z, _二、螺旋源程序/ g I x6 S% x# t) F
6 o0 r+ Z5 x/ j: \0 j
- (defun errMsg (s)# @1 p, H3 c; L P6 A3 I
- (if (/= s "function cancelled") (princ (strcat "
* W- @. q+ T; X - Error: " s)))
/ A& Z7 _8 m6 r4 c2 B3 e: r - ; 当命令执行时出现错误
- d* p v$ Q' D8 i - (setvar "cmdecho" ocmdold) ; 例如用户按下了CTRL + C
4 e5 j" r* H# Q1 L' N* f - (setvar "osmode" osmold)
3 C) s( e. w7 y' h6 } - (setq *error* olderr) ; 恢复旧的错误处理
6 y/ c% R) V8 ?$ ~ |" | - (princ)
/ B# u# q M+ }2 M - )
& ?$ U' \" R# O l. j4 Y
% B8 ^! o! T" r: ^- t) `- (defun c:3Dthread (/ radouter threadpitch threadlength threadangle 9 S1 O, f; L0 l9 q f/ P% z: W
- ptStart innerdiafactor radmid radinner ocmdold osmold 4H 5H 6H h6 g6)- M% i D6 q0 y
- ;-------------------------------------------------------------------2 \! j) L9 U m2 L
- ; 获取公制外径大小、螺距总长
3 U3 m1 S0 e# R" o# O' ^ - ; 然后计算一系列几何点! x( P" t( T, a9 x3 D+ J
- ; 并且关闭对象捕捉、命令回显
( V+ J! o! c6 W F$ Q. _" t - ;-------------------------------------------------------------------5 x* ?2 f# H: m! O
- (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))
7 l: m( O" L1 ? y" d- w - (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)) / i7 _+ u6 U1 x$ u' C# g
- (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))
9 n/ q- T" h! Q4 H' p - (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)) 6 U) ~: \! O' u9 ?+ p: t
- (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)) & M+ N+ g+ r! C) a2 p) p
- ) [+ x" s n+ z
- (setq osmold (getvar "osmode")) ; 保存调用前的osmode系统变量值6 c* i1 G; t) y5 t. b- b T
- (setq ocmdold (getvar "cmdecho")) ; 保存调用前的cmdecho系统变量值6 b" l3 E/ O" P0 F3 z
- (setvar "osmode" 0) ; 关闭对象捕捉 2 d# L3 `8 L3 z, d8 O! ?
- (setvar "cmdecho" 0) ; 关闭命令的回显
( U0 Y+ ~* B2 R
! a% x9 b D3 A3 E) [% `- (setq innerdiafactor 1.5) ; 设置内径系数
0 y9 I+ E3 T1 Y$ K/ h4 i - (initget 7) ; radmid 必须非零、非空、非负
6 c4 O/ `; c" D - (setq radmid (getdist "& r2 q/ c* y$ d! S
- 公制外径: "))
* A, C7 [4 ?7 }' i3 Z - (initget 7) ; threadpitch 必须非零、非空、非负
( S5 D4 O: d8 I9 @ \/ ~5 s1 R - (setq threadpitch (getreal "
; d2 j [1 b* f - 螺距: "))% M W* d8 ]1 a# v0 ^9 F
- (initget 1) ; ptStart 必须非空
& q q# `+ H$ g) r [: m - (setq ptStart (getpoint "9 [) f7 X7 g7 i, ^4 n# `7 X! _2 o
- 起始点: "))
! U9 ?# T$ J: E. |0 ~ U2 h - (initget 3) ; threadlength 必须非零、非空、非负
( N2 e, K6 P4 p0 @6 m! Z - (setq threadlength (getdist "" S8 K) {$ ~8 t; l4 r }5 v
- 螺纹总长(Y方向): "))
. }2 C- H3 A- l$ c# \
4 c: S0 X- b+ E- M1 |/ R- ; 对公制外径添加公差
" h; K: F" @$ T7 T( I6 b* Q - (if (<= radmid 3) (setq order 0) ; 根据公制外径确定公差带中位置
8 r1 [. A2 E, W - (if (<= radmid 6) (setq order 1)
8 L# u7 o' d& T# `0 N7 m - (if (<= radmid 10) (setq order 2)# C; q) X& Y9 k& {" P0 P
- (if (<= radmid 18) (setq order 3)
6 {/ z, `. ]: z5 V ] - (if (<= radmid 30) (setq order 4)7 K# q5 f) u7 B: K/ f/ Y4 ]5 w
- (if (<= radmid 50) (setq order 5)! s, a7 x8 s }+ y; d( B
- (if (<= radmid 80) (setq order 6)6 O4 m0 y3 y: I: m l$ }
- (if (<= radmid 120) (setq order 7)
/ U' A* t! \7 T. @. I4 c - (if (<= radmid 180) (setq order 8)$ d( m4 D' h5 X3 @3 M$ X# B& j5 T
- (if (<= radmid 250) (setq order 9)$ @- C2 h" s: B3 u
- (if (<= radmid 315) (setq order 10)
* F( E8 \6 ]! l* ] - (if (<= radmid 400) (setq order 11)
- {# |) T0 ~% [3 V" D) ? - (if (<= radmid 500) (setq order 12)9 p& p6 A7 N( [* o. u
- )))))))))))))
) }) g. @" y' u I1 V$ e& W% \
1 N2 G$ O" j* q& ?$ v- (if (< threadpitch 0.25) (setq radmid (+ radmid (nth order 4H))) ; 根据螺距确定公差带
; k" i- I) F Z - (if (< threadpitch 0.35) (setq radmid (+ radmid (nth order 5H)))
. D: [$ K g; ^) R9 o/ K6 j$ ] - (if (>= threadpitch 0.35) (setq radmid (+ radmid (nth order 6H)))7 i0 E7 x8 v1 [% ?
- )))" R! Q1 J/ b+ S5 ~
-
# G1 R! z$ N' g5 r0 ], H - (setq h (* 0.866025 threadpitch)) ; 计算齿高6 u; a5 W' I& {9 h1 @
- (setq radouter (+ radmid (/ h 4))) ; 计算外径
/ F, c2 J5 E7 w9 q; z5 D5 ^ - (setq radinner (- radouter (* h innerdiafactor))) ; 计算内径4 S' `$ n. l$ O$ X! |
- (setq threadangle (+ 30 0)) ; 计算齿顶角
" D, S. A/ _# `8 q
' B9 ]" `9 s$ [( B: ]- (auxithread radouter radmid radinner threadpitch threadlength threadangle ptStart) ; 调用绘制三维螺纹的子函数# a0 d/ B& ~" @5 L
6 N7 [( f# w4 p- (princ ") F& f J2 x" }* C9 R6 L; A4 \
- 三维螺纹创建完成")
- g1 v0 ~9 u# v; X& {7 P- i! l - (setvar "osmode" osmold) ; 恢复调用前的osmode系统变量值
- U: h' Y3 `% D2 p( f - (setvar "cmdecho" ocmdold) ; 恢复调用前的cmdecho系统变量值$ V) Z, a6 d' z5 x
- (princ)) v& [% v- ]2 b" c5 Q$ t! E7 q
- )
0 @% o4 D! n% q( @+ ]5 u/ X4 ~ - : C& V, B# R0 ~- |, s6 k/ k, {
- (defun auxithread (radouter radmid radinner threadpitch threadlength threadangle ptStart / ttal pt1z ang pt1a
3 s8 O+ Z1 L4 n ^0 s - pt1az pt3a pt1b pt1bz pt3b pttmp1 pttmp2 pttmp3 pttmp4 pttmp5 pttmp6 pttmp7 pttmp8 pttmp9 pttmp10 pttmp11 pttmp12 tstmp startcone endcone)" v1 V4 c% ~5 t
- ' f* W7 M Y. [% N2 \
- ;(command "undo" "begin") ; 开始undo步骤
' Y; G$ W* x& w9 @/ q
# R7 C5 L9 \- }- V1 Y7 q- (setq ttal (+ (fix (/ (abs threadlength) threadpitch)) 3)2 B1 P* x' M& _; I: R/ |5 V2 ~
- pttmp1 (list (- (car ptStart) (/ radouter 2.0)) (cadr ptStart) (caddr ptStart))" |* U& ?5 h d
- pt1z (list (- (car ptStart) (/ radouter 2.0)) (cadr ptStart) (+ (caddr pttmp1) 1.0))0 j' A1 j) {/ n2 |
- pttmp2 (polar pttmp1 (/ (* threadangle pi) 180.0) 1)7 a5 E0 o1 @' `; w$ x
- pttmp3 (list (+ (car pttmp1) radouter) (+ (cadr pttmp1) (/ threadpitch 2.0)) (caddr ptStart))- O$ X# [* e" M" e
- ang (angle pttmp1 pttmp3)7 O5 _; f7 Z( i% x9 b9 |. X
- pt1a (polar pttmp1 (+ ang (/ pi 2.0)) threadpitch): _2 ]% O! U3 g, k$ f( m$ {. c
- pt1az (list (car pt1a) (cadr pt1a) (+ (caddr pt1a) 1.0))# E4 \" g/ T2 a
- pt3a (polar pt1a ang radouter)" I6 Z/ M1 }+ ]" U0 U
- pt1b (polar pttmp1 (- ang (/ pi 2.0)) threadpitch)" F3 Z" S2 g3 F7 C: l. X
- pt1bz (list (car pt1b) (cadr pt1b) (+ (caddr pt1b) 1.0))
7 D: n9 N- s! j3 l - pt3b (polar pt1b ang radouter)
$ i' p6 h" F: W# i/ Y - pttmp4 (polar pttmp3 (/ (* (- 180 threadangle) pi) 180.0) 1)
5 W) j9 `& e0 f. t2 r* `+ G) T - pttmp5 (inters pttmp1 pttmp2 pttmp3 pttmp4 nil)* n! |) J/ v; e; b+ |2 Q
- pttmp6 (list (car pttmp5) (cadr ptStart) (caddr ptStart))( v1 P/ j# b. N ~, u" S
- pttmp7 (polar pttmp1 (/ (* (- 360 threadangle) pi) 180.0) 1)8 z/ m3 F% {8 |( X+ C
- pttmp8 (polar pttmp3 (/ (* (+ 180 threadangle) pi) 180.0) 1)5 Q! `! ]3 s% g+ n& h) y
- pttmp9 (inters pttmp1 pttmp7 pttmp3 pttmp8 nil)
: z* q! t) f: D# Q3 I4 Y; F L) e - pttmp10 (list (car pttmp9) (cadr pttmp3) (caddr pttmp3))+ D2 q, }# p; \) L! s' ^
- pttmp11 (polar ptStart (/ pi 2.0) threadpitch)
$ D; R, i. D3 K - pttmp12 (polar pttmp11 (/ pi 2.0) (abs threadlength))
* P. I; P3 l5 C4 q - )+ w! X4 [4 P+ d0 }
$ i) V) ]" V$ v: b, T+ E- W" g- ;-------------------------------------------------------------------# Z" d/ q5 m" l, N. l
- ; 绘制两个倒置的并偏移1/2螺距的圆锥
4 q* w( d3 O! `1 [, m: C - ; 这两个圆锥都以中剖面剖分
# ]( h2 l* ~& W- S - ; 进行并集运算
0 A% n+ b( v, m9 J3 ~$ {& e2 g - ;-------------------------------------------------------------------3 T# g3 x1 j$ N& n/ x6 v
2 ~8 l' L$ A) g/ d/ x" y9 T) W1 l- (SETQ startcone "order")( m: {) z- o8 P0 m
- (SETQ endcone "Y")
( \, X6 _/ C5 u2 _, o- o$ A - (command "zoom" "w" (list (car pt1a) (+ (cadr pt1a) (abs threadlength)) (caddr pt1a)) pt3b)
4 K$ G' z7 O& P6 ~' U - " [+ V; |$ w: T. U
- (princ ") D4 [ d' ]. ]& I* q, \6 \* s8 y
- 正在绘制三维螺纹，请等待")
- u- D j. H% v* b H - (command "pline" pttmp1 pttmp5 pttmp6 "c")' A* _, ^% p" I) j5 K/ t) m
- (command "revolve" "l" "" pttmp5 pttmp6 "")
2 u) W9 n9 Y* d* X2 r$ V - (command "slice" "l" "" pttmp1 pttmp3 pt1z pttmp5)2 a- _* M: {$ e6 Z) u' a1 `
- (command "slice" "l" "" pt1a pt3a pt1az pttmp3)
. p7 j' G% _, f) P" R3 v. u - (setq tstmp (ssadd (entlast)))
4 Q4 O4 k+ B) W/ g - (command "pline" pttmp3 pttmp9 pttmp10 "c")
% i$ ?# T Z$ K& ?0 W - (command "revolve" "l" "" pttmp9 pttmp10 ""); R2 U6 A! `5 m1 w9 E
- (command "slice" "l" "" pttmp1 pttmp3 pt1z pttmp9) v' J1 D3 z) h1 r/ K
- (command "slice" "l" "" pt1b pt3b pt1bz pttmp3)
+ b- c- d5 }$ G4 I% a6 [ - (setq tstmp (ssadd (entlast) tstmp))) h! A: Q9 R p
- (command "union" tstmp "")
& n; ]3 n2 m( U5 f; q H4 | - " v; {7 o. ~: B" K3 `( l( ?& n
- ;-------------------------------------------------------------------4 W: o0 v5 E- R; [) X
- ; 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- h: ?& S' x6 G
- ; 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- d! W' s5 u2 w
- ; 在最后一步被切除
1 }/ G7 i4 h* ] - ;-------------------------------------------------------------------( A W7 ^! x- b; P
* R; i$ `4 ?( D- (command "slice" tstmp "" "xy" ptStart "b")
0 w; F7 ?& X+ l9 b, h3 O& D - (setq tstmp (ssadd (entlast) tstmp))4 S8 I! K J7 R( L
- (command "mirror" "l" "" pttmp1 "@10<0" "y"), B; c" U% F4 M: T. Q
- (command "union" tstmp "")
1 b- r D% c" S% [3 [( q; ^ - 0 a' U3 H+ H, L- Q+ m* w& U3 z$ Y
- ;-------------------------------------------------------------------
7 u0 r* J( A Y - ; 螺旋进行阵列操作，然后再作并集（可能会耗费一定时间）5 @4 ]( b9 K0 ~% B" k
- ; 得到的实体再切除到指定的螺旋高度
5 l2 ^/ Q3 r# g. ?& Y1 \ - ;-------------------------------------------------------------------
/ a1 O7 u+ e6 Q, p4 e0 M! Q
% k* H2 B% K+ G2 ~& ?+ V- (setq e (entlast)); R1 T/ p. m" t- z. T& N) D7 u
- (command "array" tstmp "" "r" ttal 1 threadpitch)
' {' M" t+ F9 l, I6 S: s) H/ R - (repeat (1- ttal)$ f# H( I! }3 k
- (setq e (entnext e) p% b0 c& L9 ~
- tstmp (ssadd e tstmp)5 j' n4 H% v& D7 d9 Q
- )4 F% b1 W& a! T% W% Y: j1 i
- )
% V# O$ p! h. o% q- S7 T - (command "union" tstmp "")# L/ }7 f O4 u+ |. G; i6 _, B# a
0 W, Z# g$ o, v- ; 若开始创建45度的圆锥
8 G8 i, x; p& D# o/ f/ B - (if (/= startcone "order")) K! [- r( e) @9 \( P
- (progn (setq e (entlast)): h+ B8 E& c0 v/ E% D3 a
- (command "cone" (list (car ptStart) (+ (cadr ptStart) threadpitch) (caddr ptStart)) "d" radmid "a" (list (car ptStart) (+ (+ (cadr ptStart) (/ radmid 2)) threadpitch) (caddr ptStart)))
3 y1 T- q4 d: `2 g/ i8 ~( e6 n/ f - (command "union" "l" e "")
5 B2 |' z5 A* W+ w6 R% _. t - )4 ]1 i5 ^ m# `# s; k4 h5 B$ ]
- )+ Q# {, `) I1 i( @7 t! \& _
3 K( M% J; q. L: t) e0 a+ `; u- (command "slice" "l" "" "zx" pttmp11 pttmp12) x: m, }9 I" G4 c7 N, G9 c
- (command "slice" "l" "" "zx" pttmp12 pttmp11), i! k: {8 m" v0 K
- (command "move" "l" "" ptStart (list (car ptStart) (- (cadr ptStart) threadpitch) (caddr ptStart))) 8 f" ~) P7 I* B. n1 Q/ y7 m
- - v: A7 z8 ], M3 Y( }9 Z0 e4 g! F
- ; 创建最小直径的圆柱体，然后与螺旋作交集
- e5 c# L+ a* O0 T+ \ - (setq e (entlast))
* n" x0 L9 {9 }# R& f - (command "cylinder" ptStart "d" radinner "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart)))# u: A: T; k' G3 f$ l. P
- (command "union" "l" e "")
% Q# ?5 }% n. y$ A5 Q$ l. i) n - (setq tstmp (entlast))- f4 H' |, |8 A1 y- I0 p4 s }
$ a, {) l6 R& Q; p- q& Y Q+ B- ; 创建中空的圆柱体% |8 g/ O E- D1 [# ~
- (command "cylinder" ptStart "d" radmid "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart))) ; minor dia/ s& c( s7 k7 K1 h; a- L. ~8 A
- (setq e (entlast))# c+ N) B4 Z1 Y' X+ Z
) p, z- _# [9 G6 f% W& Z- ; 若最后创建45度的圆锥
. w$ W( W8 T6 e% t8 T! I - (if (/= endcone "order")
- ~" ~, w1 x' O9 V% k - (progn (command "move" "l" "" ptStart (list (car ptStart) (- (cadr ptStart) (/ (- radmid radinner) 2)) (caddr ptStart)))
! e! U3 h0 F9 w+ g - (command "cone" ptStart "d" radmid "a" (list (car ptStart) (+ (cadr ptStart) (/ radmid 2)) (caddr ptStart)))
- q7 ?( H& O( \- V% U - (command "move" "l" "" ptStart (list (car ptStart) (- (+ (cadr ptStart) (abs threadlength)) (/ (- radmid radinner) 2)) (caddr ptStart)))+ C; a, I) R0 N8 X3 O' `
- (command "union" "l" e "")
' V3 q6 U9 b, R# ]+ s! G1 H$ O' r - (setq e (entlast))
9 \3 ]) B) x7 [$ Z - )
: z( U2 k: p( @5 B( f - ). h" O! z6 Y! ^$ |6 B
5 d v; c+ Z+ d6 f4 K7 m- ; 从大圆柱中减去小直径圆柱, n" z3 h1 D7 N2 z/ h) w2 C& Y) U. W
- (command "cylinder" ptStart "d" (* radmid 1.5) "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart)))+ E+ _3 v! T7 ]0 y( H' t
- (command "subtract" "l" "" e ""); `: S! C( {$ g7 X G$ C
- (setq e (entlast))
7 n6 Q& |9 P' ^/ ]0 }
! Z9 ]: o$ Q3 @7 V. Z: s% n' L$ U! t- ; 从螺旋中减去圆柱. d& B4 r0 Q$ b4 ]: G1 |
- (command "subtract" tstmp "" e "")' \+ X6 m7 B) R7 T1 B8 S! D
, h$ C% h$ I# h I( A+ n/ S9 _- ; 如果螺旋长度为负然后镜像
8 l, S* E/ q, s6 ? - (setq e (entlast))6 M P, J2 p7 M2 X- @
- (if (< threadlength 0) (mirror3d e "zx" ptStart "y"))2 s8 r! i" M( c" b
- ; M8 N8 v1 f3 D7 `5 Z, ?
- (command "zoom" "p"). \* _# [# p5 E- c% H- y
- ; (command "undo" "end") ; 结束undo步骤) \7 P' }0 k @: z' X* c
- )
+ d) X s9 e% ^
$ K* O2 Y" |, a, x- ;;;---------------------------------------------------------------------------------------------------------------------;6 D% A$ I: X* x
- (arxload "geom3d" nil)
) S' R% s3 ~/ O - (princ "& b! y5 E2 U6 {; h% ~
- 3DThread 已加载。 ")8 G$ B3 P& H) K# ~. E9 F5 Z& N
- (princ)
9 M J, p0 N8 ^
2 Z5 Y& Q, T1 m0 V* u& [; c! I6 [. U# O' x. b
三、弹簧源程序
3 r; V, i7 V' S" w: w& v: t$ U- (defun errMsg (s) ; 当命令执行时出现错误 8 t1 O9 y: A1 I* V% q1 Q, }4 [9 H
- ; 例如用户按下了CTRL + C& m+ L. c6 l" r9 i5 g
- (if (/= s "Function cancelled")8 G6 K; h% B" t9 o) L
- (princ (strcat "& S+ Q$ W8 `9 o% B
- Error: " s))8 `( Q! F+ j9 S
- )5 a0 W) R) L9 h: ]2 M
- (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值8 ]7 O) I3 V9 B, I) N
- (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值
6 @, [% f9 a' P) G$ `7 J - (setq *error* olderror) ; 恢复旧的错误处理3 C" V% z% Y: J
- (princ)
1 P8 A5 ~+ u. N* E9 h - )! y! v7 G q2 C7 A9 W* A
- + e* ^3 S+ U( m1 o
- (defun spring (nRepeat cntPoint bhfac lr strad bvfac
9 o' n7 |. T/ M7 O& F - / angle distnc tp aGrw dhGrw dvGrw Pi2 dv)3 E4 @+ |8 ?' Z( k- K: v, L
. t9 p6 M( E2 x- (setvar "blipmode" 0) ; 关闭 blipmode 9 c9 z9 O8 a4 a
- (setvar "cmdecho" 0) ; 关闭 cmdecho
% b% _9 V( t' q& q - (setq Pi2 (* 3.14159265 2))
' G6 t$ {: ^3 @. }7 l - (setq aGrw (/ Pi2 lr))6 r: Z* o: {4 h1 v3 n
- (setq dhGrw (/ bhfac lr))6 C1 h/ B3 Q. T7 l
- (if bvfac (setq dvGrw (/ bvfac lr)))8 Q; u7 W1 A3 }0 `
- (setq angle 0.0); s/ m0 \* G- N, `7 H+ j
- (if bvfac
0 v! Q0 W0 O# e - (setq distnc strad dv 0.0)* t$ Y2 _! f) p. {
- (setq distnc 0.0)
1 { c7 L( x1 p2 i6 P2 ~% n - )8 E7 X: W* m! v# ?/ z. T, f% o
- (if bvfac
5 \* Q7 l. ~) N* z8 U* V# ] - (command "3dpoly") ; 开始绘制弹簧" V! j; B4 X' T( ]' g
- (command "pline" cntPoint) ; 从基点开始绘制弹簧6 J. Q7 L6 f) ]! o8 c
- )
4 e6 t( K+ F, |5 ^5 D' [8 O - (repeat nRepeat 4 [: C7 Z% |: a6 p" k& r
- (repeat lr + K5 y: E! T/ i0 n @
- (setq tp (polar cntPoint (setq angle (+ angle aGrw))+ D( G' G$ ^8 s- U% |5 t
- (setq distnc (+ distnc dhGrw))' g. F% ]4 b, G- J) a" z; w# N5 s1 j
- ); _3 N2 V4 U4 z5 o. U
- )- i# P, L5 W( U3 `2 a p
- (if bvfac
3 b% x0 G" }( Q, E$ r* v - (setq tp (list (car tp) (cadr tp) (+ dv (caddr tp)))" B" Q( f% y0 b4 y+ w
- dv (+ dv dvGrw)
& m: d1 K( ]7 z# t! ]) ? - ): B; V/ W- }$ b
- )
- h' Q3 ^& r$ W- v9 e - (command tp) ; 继续输入下一点
h" K% B% E/ G; |6 |+ a - )
( g; j, q, ^' p7 G: W3 } - ) 7 `9 N Y U5 ]( t
- (command "") ; 输入结束( f5 a) G5 F8 Y9 o' ~$ W* Z
- (princ)
* N6 ?# ~8 b2 W5 b - ) ) e9 ^# R) I h O' y
- - m5 Y% ~) Z7 ] n/ a( Z- ?
- ;;;
8 ?& H/ G9 g# N; b& K$ P - ;;; 生成三维弹簧函数调用接口) a5 M1 M m$ S) @8 \
- ;;;0 k- [. ~& w+ r% r8 R; Q) n
- " n1 I, @7 e3 T. w) K" W
- (defun C:3DSPRING (/ olderror cmdch blpmd cntPt RottCnt horiGrw vertGrw bgnRdtn ptCntPerCircle)
7 `+ `# |9 ^" N1 Y* D' Y - (setq cmdch (getvar "cmdecho")) ; 获取cmdecho值，以便调用结束后恢复7 G, i. o* D4 W3 `
- (setq blpmd (getvar "blipmode")) ; 获取blipmode值，以便调用结束后恢复# R: ?, K+ j9 n) Y5 i! O1 w
- (setvar "cmdecho" 0) ; 关闭 cmdecho
0 B* |4 [ q( l - (initget 1) ; cntPt 必须非空
! V6 E2 k/ p0 C$ V) z5 O - (setq cntPt (getpoint "
( c5 w; x5 O( ~* q4 R - 请输入底部中心点: ")): S3 U4 x" b9 G1 ~' G* L
- (initget 7) ; RottCnt 必须非零、非空,不可忽略
" p( L9 M6 ?5 ?# | - (setq RottCnt (getint "
5 k( e( s- X6 r - 旋转的圈数: "))& H: E! X, Q- i* s4 s8 a( T. _) o8 S
- (initget 7) ; bgnRdtn 必须非零、非空,不可忽略1 N; ^" y, r2 L& D
- (setq bgnRdtn (getdist cntPt "7 N$ A% n1 l7 }, T$ G
- 起始半径: "))+ q: i- Q, V/ y1 j, f. O/ F |
- (initget 1) ; cf 必须非零、非空
3 `6 { R3 i4 ]) d+ g& e- h. ~" e - (setq horiGrw (getdist "" x2 j# T; i! Y0 ^
- 每一圈的水平增长距离: "))
0 q6 X# Z/ X& @, U4 |- T - (initget 3) ; cf 必须非零、非空" }/ O; {# D! X4 _
- (setq vertGrw (getdist "
/ V9 }, G2 ?2 K3 C& f: a) Z - 每一圈的垂直增长距离: "))0 j. p! T! a3 m) t/ I
- (initget 6) ; ptCntPerCircle 必须非零、不可忽略
$ ^. g: y9 ^; P' A5 x2 h - (setq ptCntPerCircle (getint "7 p2 F0 \! e7 X
- 每一圈的插值点数<35>: "))/ H/ N: f2 }5 g% E0 y. q( U
- (cond ((null ptCntPerCircle) (setq ptCntPerCircle 35))) 3 ~7 i% y8 ?! n: Z5 Q) B3 Q
- (spring RottCnt cntPt horiGrw ptCntPerCircle bgnRdtn vertGrw): I3 u6 ^8 T1 q5 S4 {* d
- (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值
* g# }9 j( _9 S# Z1 g2 v; U: | - (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值: m( ?2 `" [1 c2 ~; [0 N2 n$ [( b
- (setq *error* olderror) ; Restore old *error* handler/ d/ _" S" b8 k z* U7 P" j1 K0 X
- (princ)
0 A3 M1 X- f9 J6 S1 l9 v - q& I& G* }9 r& n2 O/ o( T
- )
I( a5 G" z) E, h2 G
|
发表于 2006-4-14 13:10
发表于 2006-5-5 10:43
