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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; `5 l- a- W+ q' I- [" _( t: L+ ~7 I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：7 |# m2 I; C2 l, p; u0 Z
一、齿轮轮齿渐开渐开线3 F" z8 m+ N" h% {4 P7 o
3 o, ]1 |! }8 z- (defun c:gear(/)5 M' R, }' l6 B( ^ U1 f' [/ r8 o; X6 J
- (! M( j, {8 {* ^$ m/ u h& x9 o7 d
- setq! p4 U6 v7 q z+ p6 [1 V
- p0 (getpoint"输入齿轮中心p0: ")
6 X+ m, H( H2 O" ?) w i - m (getreal"输入齿轮模数M: ")
" C7 F9 `6 q2 ` O" E - z (getint"输入齿轮齿数Z: ")
! ?' u; F2 T- p! G, k$ \$ T - ha 1
' J) w3 j o8 r" A9 q - c 0.25
3 w: M- D* Y2 Y1 d - a (/ pi 9)
5 M# x3 g. b. d l# N& y - ra(/ (* (+ z (+ ha ha)) m) 2)
9 l7 a# g0 {9 X7 V4 @' q. c$ v9 ^ - rf(/ (* (- z (+ (+ ha ha) c)) m) 2)
9 B+ j0 _% `! r, y) d - r(/ ( * m z) 2)) @( q1 T) U0 u# w
- rb ( * r (cos a))7 D c! o$ v/ o# q, E' `& ^' f
- ri rb
$ K/ W2 n) @9 P1 J, L' K - ang 0% D0 a+ ^1 Z' ]1 g
- g (polar p0 ang rb)5 i. ~& v. ]$ W. T8 H
- )0 S) v% s% n6 i% J0 h
- (command "circle" p0 ra)
}5 V* V7 \4 ~, U2 i - (command "circle" p0 rf)
) y8 r7 r, R" x* Y R5 X( q0 h3 C; A - (command "circle" p0 r)
6 m: @; m# x# y0 u q( X% _ - (command "line" g)
8 T6 q5 F5 Y5 M E; n. E - 5 n5 Q5 e6 y: t2 x* b5 }9 f4 |: t( j
- (while (< ri ra)1 ^" I. D- l* V# @. g0 e% s
- (setq/ [- Q G7 {9 b) P' v
- ang ( + ang(/ pi 360))
- @) s8 L, D' z$ `0 C1 T - ri ( / rb (cos ang))$ R+ N F" ?! r( `+ [
- cta ( - (/ (sin ang) (cos ang)) ang)
; X% R7 K8 a& t - g(polar p0 cta ri)* n' U4 K1 o. x! [( ~
- )% K2 P& t& D) L: Y9 g
- . _1 J" D# {4 z8 h" x
- (command g)
& ~8 `! t$ t- [# ?# U7 b0 w - )
: T, ~9 G6 v1 E9 t) q C - (command ) ! m P0 o+ t0 F. n$ s
- )
5 `6 a5 J0 t9 S h& t
6 ?+ S& c3 H, i1 Q6 {; t( C: g5 b8 N2 {7 {! i% S
" C9 E7 Y4 @/ X! {6 d b; P# M二、螺旋源程序
9 T+ K9 ]* B4 l4 E7 l1 W: M R& a" s8 t% x/ D; f3 ]
- (defun errMsg (s)4 h% C# W1 P0 P, i
- (if (/= s "function cancelled") (princ (strcat "+ h" m/ t" n U+ L2 V4 ~/ n6 s5 s
- Error: " s)))2 f7 e2 j' Q9 Z2 D9 {% T2 }" T
- ; 当命令执行时出现错误
' h/ ]3 ~2 Q! H& r: o+ { - (setvar "cmdecho" ocmdold) ; 例如用户按下了CTRL + C
' O- P. N* A: `: b5 m0 R - (setvar "osmode" osmold)
3 r) z/ x; v6 d- x- O% A) `0 L - (setq *error* olderr) ; 恢复旧的错误处理
) U9 @9 \; A5 V* z9 v+ n7 N+ i+ r - (princ); o( m* S% }& [* k6 s4 [
- )
5 Y( `2 O+ |* T! l - & G: c) @5 L/ U+ |4 f) d; }# y
- (defun c:3Dthread (/ radouter threadpitch threadlength threadangle
4 u$ B; M! p# h6 j: q - ptStart innerdiafactor radmid radinner ocmdold osmold 4H 5H 6H h6 g6)8 U( o; h: ~& T! r. a
- ;------------------------------------------------------------------- o/ \" d! P1 R
- ; 获取公制外径大小、螺距总长
( P3 @9 c/ U/ {1 n4 X - ; 然后计算一系列几何点
" Y6 g0 M3 @: o: m8 x( `$ | i - ; 并且关闭对象捕捉、命令回显1 G' z) f1 M. I* t( I
- ;-------------------------------------------------------------------
+ e* X' _4 i% L0 D6 L - (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))
- T* ?7 W/ o3 c7 ^ W2 { - (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))
2 Y- P' r# m1 S2 o1 U7 E - (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))
2 ]7 n2 K& \/ A2 b5 Z$ w0 L - (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)) 4 B$ k: P$ t% j, Y7 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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/ F: [9 t6 h9 {7 U6 `8 z$ u- (setq osmold (getvar "osmode")) ; 保存调用前的osmode系统变量值
* S* m4 _# z9 D6 J - (setq ocmdold (getvar "cmdecho")) ; 保存调用前的cmdecho系统变量值
/ H' }# n* `0 z; G+ @+ y - (setvar "osmode" 0) ; 关闭对象捕捉 $ N) a$ ~% ?; n! ^
- (setvar "cmdecho" 0) ; 关闭命令的回显
5 {6 F& L' j n3 M0 H2 c% Z - 4 A. i1 v+ H# v4 I. F' t& @' V' i
- (setq innerdiafactor 1.5) ; 设置内径系数
+ G" @# u, _) K9 b, y' { - (initget 7) ; radmid 必须非零、非空、非负
L B% L/ l) K" j, ^& Q0 s3 i2 z" E - (setq radmid (getdist ": v6 T% G% H$ O" ~( r$ K1 R
- 公制外径: "))
$ W6 f& Z+ {4 i# m - (initget 7) ; threadpitch 必须非零、非空、非负; Z x0 s; S: ?+ O& P! n- c
- (setq threadpitch (getreal "' g5 A) v. s/ n0 B, N9 {. o
- 螺距: "))
5 |. j" M# p) `5 v - (initget 1) ; ptStart 必须非空
$ q0 L! l, O. X. u/ n) F" I1 ^ - (setq ptStart (getpoint "0 [$ @. n4 ^/ F* e2 f% _% k/ N8 d
- 起始点: "))3 \5 `4 @1 A9 S1 V$ \& O' ] \
- (initget 3) ; threadlength 必须非零、非空、非负, F$ H: U2 d3 x
- (setq threadlength (getdist "
+ A2 e0 o( j* E8 m; g - 螺纹总长(Y方向): "))# E4 l4 C$ ^% l; ~% W
2 v0 V7 k; q4 {) [5 r! s- ; 对公制外径添加公差
' M* o% ~. t* y7 M& J1 T; g - (if (<= radmid 3) (setq order 0) ; 根据公制外径确定公差带中位置
; R' V$ G% o3 z" Q5 k @ - (if (<= radmid 6) (setq order 1)2 c! X' e' H9 C0 k
- (if (<= radmid 10) (setq order 2)( e/ s4 C5 R% L. E. \
- (if (<= radmid 18) (setq order 3)
) A) D6 ~- P3 d9 Q - (if (<= radmid 30) (setq order 4)% b3 @. D) E W0 X& b0 x9 G2 x
- (if (<= radmid 50) (setq order 5)% P1 M6 H1 p% k8 Q
- (if (<= radmid 80) (setq order 6) N! ?% R: Y# J, P$ e
- (if (<= radmid 120) (setq order 7)$ u* U9 l/ Y, ^0 I6 a+ {
- (if (<= radmid 180) (setq order 8)
: h; f8 R; D) V" j - (if (<= radmid 250) (setq order 9)* M- s( T7 K0 K6 J1 U% W
- (if (<= radmid 315) (setq order 10)7 g& I$ v7 N) O8 z D
- (if (<= radmid 400) (setq order 11)
) C% r" b5 L m: x0 Z: [ - (if (<= radmid 500) (setq order 12)4 O9 E2 E7 q6 ~% n1 ^
- ))))))))))))); e8 ?% Q2 `# N9 L6 F- D0 N3 O
/ N* J! S# r: }5 M+ v- (if (< threadpitch 0.25) (setq radmid (+ radmid (nth order 4H))) ; 根据螺距确定公差带
2 Q2 S$ M% R0 R$ E9 M! m - (if (< threadpitch 0.35) (setq radmid (+ radmid (nth order 5H)))
) I# _5 C H3 u S5 \1 U - (if (>= threadpitch 0.35) (setq radmid (+ radmid (nth order 6H)))4 `, v2 E8 [. W: _3 M1 G
- )))6 ^) L6 M1 h$ O2 o7 }
-
. m( T) P% z% P* C3 c$ B - (setq h (* 0.866025 threadpitch)) ; 计算齿高
/ Z. u" h% e6 n, P - (setq radouter (+ radmid (/ h 4))) ; 计算外径
- o4 L0 L* W& g' M# j! G9 k* S - (setq radinner (- radouter (* h innerdiafactor))) ; 计算内径
- t- X1 l6 S! g5 ? ] - (setq threadangle (+ 30 0)) ; 计算齿顶角
) m, B+ @8 p5 L' Y9 O - ; q9 Z7 h; S- T+ K7 J. E
- (auxithread radouter radmid radinner threadpitch threadlength threadangle ptStart) ; 调用绘制三维螺纹的子函数3 P1 Q+ ^6 U- q( M
1 h; V0 [8 n* j, L+ N, i- (princ "
4 }* e# t1 I1 M2 F* S) Y% \ - 三维螺纹创建完成")
4 u# v- R, {5 ^ - (setvar "osmode" osmold) ; 恢复调用前的osmode系统变量值( p: @4 A$ r0 |' o
- (setvar "cmdecho" ocmdold) ; 恢复调用前的cmdecho系统变量值
& C3 n' C; W$ @+ W7 J3 B9 T - (princ)
5 A3 f# o+ p; j7 I - )
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- (defun auxithread (radouter radmid radinner threadpitch threadlength threadangle ptStart / ttal pt1z ang pt1a# l }2 F7 q# i# R \5 M
- pt1az pt3a pt1b pt1bz pt3b pttmp1 pttmp2 pttmp3 pttmp4 pttmp5 pttmp6 pttmp7 pttmp8 pttmp9 pttmp10 pttmp11 pttmp12 tstmp startcone endcone)
" U% J- y4 j' k - % H2 n' V3 V- b- q3 W+ p" G5 k
- ;(command "undo" "begin") ; 开始undo步骤2 j2 v( ?! W$ K6 J- i- a
- ( E+ C9 r2 a8 s8 j4 y( d R
- (setq ttal (+ (fix (/ (abs threadlength) threadpitch)) 3)
" _! ]$ h1 }" b2 A+ [5 [& ] - pttmp1 (list (- (car ptStart) (/ radouter 2.0)) (cadr ptStart) (caddr ptStart))+ C# N+ o7 d; I5 b6 b% D/ d) ~
- pt1z (list (- (car ptStart) (/ radouter 2.0)) (cadr ptStart) (+ (caddr pttmp1) 1.0))& {1 ]8 o$ p: g- O4 z. d
- pttmp2 (polar pttmp1 (/ (* threadangle pi) 180.0) 1)2 S' E- r3 p% ^1 ?
- pttmp3 (list (+ (car pttmp1) radouter) (+ (cadr pttmp1) (/ threadpitch 2.0)) (caddr ptStart))
' C. q9 O2 @+ D t1 i - ang (angle pttmp1 pttmp3)
5 P/ _0 g1 N- N3 `1 U+ m! q6 \ - pt1a (polar pttmp1 (+ ang (/ pi 2.0)) threadpitch)! d. h4 Z7 S5 T' j" X! g2 X4 q
- pt1az (list (car pt1a) (cadr pt1a) (+ (caddr pt1a) 1.0))
- q& _: b( [ J+ Q2 a - pt3a (polar pt1a ang radouter)- N* l4 Q& B8 G* ]) m, u2 [$ V, d
- pt1b (polar pttmp1 (- ang (/ pi 2.0)) threadpitch)- }9 G5 ~9 {5 ^3 G/ ^: p2 {4 |
- pt1bz (list (car pt1b) (cadr pt1b) (+ (caddr pt1b) 1.0)); G3 E- \2 e1 J
- pt3b (polar pt1b ang radouter)# w# A7 t9 l) t% e7 @1 m6 Q+ v
- pttmp4 (polar pttmp3 (/ (* (- 180 threadangle) pi) 180.0) 1)
0 {, G3 h% |. w) f7 [ - pttmp5 (inters pttmp1 pttmp2 pttmp3 pttmp4 nil)! R) j; g3 P5 t# h) `& c( S
- pttmp6 (list (car pttmp5) (cadr ptStart) (caddr ptStart))
% t: O! k4 a# ]8 s - pttmp7 (polar pttmp1 (/ (* (- 360 threadangle) pi) 180.0) 1)
1 e8 N( v" j' t5 ^ - pttmp8 (polar pttmp3 (/ (* (+ 180 threadangle) pi) 180.0) 1)
' p& P* ]0 w+ C$ ]/ }: {" J8 F - pttmp9 (inters pttmp1 pttmp7 pttmp3 pttmp8 nil)
7 @% Y: }5 F; w) z3 z5 n - pttmp10 (list (car pttmp9) (cadr pttmp3) (caddr pttmp3))
7 n/ o4 B- U0 M* x# \ - pttmp11 (polar ptStart (/ pi 2.0) threadpitch)
2 z4 z9 S+ y$ a6 @+ j* |' E9 I+ H - pttmp12 (polar pttmp11 (/ pi 2.0) (abs threadlength))/ t, M! Q$ }' Y9 ?1 t4 E/ J/ z
- )
& S0 A4 Y c8 v" U4 D+ K - 9 v) y3 r( c, x) k& l7 |
- ;-------------------------------------------------------------------
9 O8 H' L) ^2 {0 \7 Q( g$ L! k+ y/ F - ; 绘制两个倒置的并偏移1/2螺距的圆锥3 W9 m4 I$ ] T# P# }. m
- ; 这两个圆锥都以中剖面剖分! N5 _4 a6 f/ M8 j t5 b
- ; 进行并集运算, c* l. a. W( x! F- n! Y
- ;-------------------------------------------------------------------9 }3 |& `2 H3 o
- 2 _; R& ^( D" V+ M
- (SETQ startcone "order")
( q4 a2 {- n, b, l+ F) r( Q - (SETQ endcone "Y")
1 B* K4 s0 V) z. Y% ]7 m - (command "zoom" "w" (list (car pt1a) (+ (cadr pt1a) (abs threadlength)) (caddr pt1a)) pt3b)
8 i1 X, F% o: H+ m. w" o - / I+ Y( F+ S$ B6 I: _3 ^# z+ _
- (princ "' F. I) ?+ C) k) I' J/ c
- 正在绘制三维螺纹，请等待")
" {, c |: g7 z$ p( X6 ^ - (command "pline" pttmp1 pttmp5 pttmp6 "c")2 x* r1 e* D8 R8 `
- (command "revolve" "l" "" pttmp5 pttmp6 "")
* B' S* K1 m& v- O5 x - (command "slice" "l" "" pttmp1 pttmp3 pt1z pttmp5)" M* p9 C" _$ z' D% J, l* }
- (command "slice" "l" "" pt1a pt3a pt1az pttmp3)
2 \ [1 H( o$ f% I - (setq tstmp (ssadd (entlast)))
1 S2 V" N; A- W; A2 X; _ - (command "pline" pttmp3 pttmp9 pttmp10 "c")
+ f. Z3 ?4 Y7 X, R - (command "revolve" "l" "" pttmp9 pttmp10 "")4 W0 y1 ` t+ a* v' L8 l; K
- (command "slice" "l" "" pttmp1 pttmp3 pt1z pttmp9)
/ o' J9 m4 q0 j3 r* R) Y - (command "slice" "l" "" pt1b pt3b pt1bz pttmp3): Z4 r( ]; q7 I; d4 e* G
- (setq tstmp (ssadd (entlast) tstmp))1 ~/ P% c! e1 \
- (command "union" tstmp "")
9 a; D! a+ Q% X) c - . L1 Q% n" `/ Y
- ;-------------------------------------------------------------------
) V* _+ l. }$ c9 {; D - ; 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1 T2 ? ^- N$ I$ Q- ^; _2 P
- ; 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
8 V$ A9 g: v5 W7 r - ; 在最后一步被切除- e1 w; `: a, n! H
- ;-------------------------------------------------------------------. q& y; B; Z5 K) m
- # f) h! d \9 v6 S h- e9 ]" r
- (command "slice" tstmp "" "xy" ptStart "b")
' }7 ]+ R( F- U, z9 g- U - (setq tstmp (ssadd (entlast) tstmp))5 I. C" q' @2 S$ R1 p
- (command "mirror" "l" "" pttmp1 "@10<0" "y")
! ]; n) s2 g, O8 ?. r. N - (command "union" tstmp "")
8 M, T6 [& Z6 x! ]" W
; O- C1 P- n3 E( N- ;-------------------------------------------------------------------
. f/ |/ z' s7 r( I% n, @4 ?# B - ; 螺旋进行阵列操作，然后再作并集（可能会耗费一定时间）
5 K# o# D1 F4 v/ g o4 W5 ~, { - ; 得到的实体再切除到指定的螺旋高度3 s" ]6 |8 y& H4 W+ D; ~* ?. D3 a4 a4 P
- ;-------------------------------------------------------------------
S3 B! |1 f* e - % S! C! a: d- o q; c1 i4 [
- (setq e (entlast)); B" ` i6 A/ x. ^) G% S
- (command "array" tstmp "" "r" ttal 1 threadpitch)
/ @6 W J& z- w - (repeat (1- ttal)) m$ L' s1 D' H" b' F7 F' G4 w- c
- (setq e (entnext e)
, z1 q4 ?- x' o4 K7 o, K) A - tstmp (ssadd e tstmp); p. @% }6 M) N9 I6 C
- )
! R( a, i) ^, h - )0 e3 H$ ?2 o% @9 k: L4 H c6 `
- (command "union" tstmp "")- I* h/ e" _; l. O. y
- ( e/ R9 U% b$ x8 m0 P
- ; 若开始创建45度的圆锥
7 @8 F$ g! I8 ^" ^% I& U - (if (/= startcone "order")
! @4 J2 E: a" Z w' \, U - (progn (setq e (entlast))5 ]; k6 ]! i- |3 q6 w; Q
- (command "cone" (list (car ptStart) (+ (cadr ptStart) threadpitch) (caddr ptStart)) "d" radmid "a" (list (car ptStart) (+ (+ (cadr ptStart) (/ radmid 2)) threadpitch) (caddr ptStart)))# R* |' B/ z+ r' s/ |; y# `
- (command "union" "l" e ""), N7 n( P: s& \# ]
- )- A8 A$ O2 F9 t T9 v4 J
- )
4 C" Y, G2 Z% K0 k6 {9 W, E) ~
4 l* n. G" E/ `- N- (command "slice" "l" "" "zx" pttmp11 pttmp12)
! e+ o7 Y/ l% ~) ~1 B - (command "slice" "l" "" "zx" pttmp12 pttmp11)
( D, ^. a% H& ]. ? - (command "move" "l" "" ptStart (list (car ptStart) (- (cadr ptStart) threadpitch) (caddr ptStart)))
' W, l6 w6 e+ _- I* e# ~
8 X( r/ M( ^# Q9 |; V7 M, ]$ v- ; 创建最小直径的圆柱体，然后与螺旋作交集7 O$ I5 B C3 h: ^) a C
- (setq e (entlast))
+ ?3 f/ o; f0 e5 Z% a; Z* ` - (command "cylinder" ptStart "d" radinner "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart)))8 f ^- {) F4 Y$ d4 p% x5 e
- (command "union" "l" e "")
9 d* w; s, R# O( q- | - (setq tstmp (entlast))& f. ]- N$ Y) R. m
0 G* A7 r( E" S0 L% Y- ; 创建中空的圆柱体
& i5 |9 b7 j* R, ?7 h - (command "cylinder" ptStart "d" radmid "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart))) ; minor dia
9 ^2 G8 p7 P2 k. c+ e6 @ - (setq e (entlast))
1 ~5 n! r( g6 r% @( I" T
( A$ T ^8 |9 j7 s& U- ; 若最后创建45度的圆锥
0 T$ [- n, o9 h; [# l- v+ _ - (if (/= endcone "order")4 H* @* X! ^% K* j' q
- (progn (command "move" "l" "" ptStart (list (car ptStart) (- (cadr ptStart) (/ (- radmid radinner) 2)) (caddr ptStart)))
' H8 y& W2 Z3 s& n, X2 r" V - (command "cone" ptStart "d" radmid "a" (list (car ptStart) (+ (cadr ptStart) (/ radmid 2)) (caddr ptStart)))
+ a" D/ Y- W$ G- [% C3 z- v1 a - (command "move" "l" "" ptStart (list (car ptStart) (- (+ (cadr ptStart) (abs threadlength)) (/ (- radmid radinner) 2)) (caddr ptStart)))% r4 Y- C3 R3 u- S, I# |4 e
- (command "union" "l" e "")
+ o1 S* ]) t+ }* C& K& F0 W - (setq e (entlast))
# I: S0 t. I' K( r$ g - ). N4 j9 u/ u. D, w/ r
- )
+ @' Q4 L. D) d3 o$ O4 `
8 f8 |" `/ q1 f- ; 从大圆柱中减去小直径圆柱, r& o4 C. Y2 \: c* c& f
- (command "cylinder" ptStart "d" (* radmid 1.5) "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart)))6 L5 g% k" y: o& a6 Y3 u
- (command "subtract" "l" "" e "")
" ^- E' P1 ?/ w2 T5 d. d& q - (setq e (entlast))
4 d. u3 R0 u) G1 e s - 4 M& Y8 @! q$ {% z# W' y# j) |
- ; 从螺旋中减去圆柱
1 a; F: q% W6 R3 i! V: Y - (command "subtract" tstmp "" e "")
* n" n, M- {0 z, E, r
1 `& `, O! j/ p1 G- ; 如果螺旋长度为负然后镜像
: G1 p+ i% r9 R$ a& ~7 ?. R% C - (setq e (entlast))
& |2 S& r( l. i; B5 y - (if (< threadlength 0) (mirror3d e "zx" ptStart "y"))+ L7 E1 ?9 S6 J# }: }5 i
- $ B8 P) V0 d) y( b9 D) \2 C
- (command "zoom" "p"). u6 M- C T4 w1 W1 p" m- w4 Z5 W3 f
- ; (command "undo" "end") ; 结束undo步骤( D# V. j9 }& N8 E5 g J* w
- )
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- ;;;---------------------------------------------------------------------------------------------------------------------;& j! y( k+ n9 J
- (arxload "geom3d" nil). b6 r/ g Z- O0 T
- (princ "8 s4 Y& v f: [2 ~$ Z- M
- 3DThread 已加载。 ")9 z, Z1 p& s+ L" d
- (princ)5 L/ F Q( b" V8 K2 ^
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- p' D% ?8 }1 R三、弹簧源程序5 V8 }' \6 W# Z* Q$ L
- (defun errMsg (s) ; 当命令执行时出现错误
4 ~! b! `) ^' Q+ Z3 U4 b! U, c - ; 例如用户按下了CTRL + C0 [8 @. L8 k: N1 ^
- (if (/= s "Function cancelled")
, @& ^. v' M, K7 }$ m9 x - (princ (strcat "5 a' |# l% H6 E3 z
- Error: " s))! P- O7 z1 y8 ^; ]$ T' }
- )$ J' B. e- J% t) I+ m4 O% D F
- (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值
- ~6 m8 ], ~' m - (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值
5 f3 ` `/ D$ b; n - (setq *error* olderror) ; 恢复旧的错误处理4 I- y; `% v/ Z9 S/ E
- (princ)
1 ~' J! A" t9 d y2 a - )- `) A/ D a. a
- " y0 y2 N! p( l5 y# R
- (defun spring (nRepeat cntPoint bhfac lr strad bvfac
8 m' w, i& t" Q+ m4 R/ m! ` - / angle distnc tp aGrw dhGrw dvGrw Pi2 dv)+ u+ A. y% d6 ]* Y% k# K8 P
/ _4 {1 O- U: F0 h- (setvar "blipmode" 0) ; 关闭 blipmode 9 S) y9 y* p7 _- r( |' R* t
- (setvar "cmdecho" 0) ; 关闭 cmdecho! O9 F. H0 ^1 q* q3 h" |, y" v; V
- (setq Pi2 (* 3.14159265 2))9 b, ?! F; u1 I- f
- (setq aGrw (/ Pi2 lr))
9 y/ w* W, L' y a# I8 R* ? - (setq dhGrw (/ bhfac lr))# p' D* [1 s% T
- (if bvfac (setq dvGrw (/ bvfac lr)))7 H! t. Q |; t. { u9 `9 A/ o
- (setq angle 0.0)
! e! A% [5 b& T2 n3 Z: p5 `! ^5 v - (if bvfac
5 O8 _* P: @# B2 K1 O1 v2 m g! k; I - (setq distnc strad dv 0.0) G4 j' F: C1 a8 v' W- J0 r
- (setq distnc 0.0)
* }+ {0 d/ z ?7 c6 v& c - )
3 {8 p5 s- D2 N2 B7 ?$ Y. i - (if bvfac
2 w! _+ f2 {, U# O7 x2 K) P/ d, C - (command "3dpoly") ; 开始绘制弹簧
( I# O! ^ S/ l$ K) h8 N3 R - (command "pline" cntPoint) ; 从基点开始绘制弹簧
: @" \6 Y/ V- e4 X( m: _ - ) i" m( {. G: B) @/ M8 z H L" A! f
- (repeat nRepeat 2 a# A7 I+ w( j5 I! d: z4 b
- (repeat lr
. u1 I2 U. Y2 E1 i1 r. b$ r% S' a - (setq tp (polar cntPoint (setq angle (+ angle aGrw))
- ?, K+ v B2 H0 o - (setq distnc (+ distnc dhGrw))3 M' }. f! C* U; a& X3 a
- ) {# V% Q3 \' d) |
- ), B+ \5 a/ g# l7 S: h. I1 a
- (if bvfac' U, j+ s1 q0 ^# Y/ Y
- (setq tp (list (car tp) (cadr tp) (+ dv (caddr tp)))! e8 A' k9 B( s, C4 o( Q
- dv (+ dv dvGrw)
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- )
6 ?: d% i* `% r - (command tp) ; 继续输入下一点
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- ) 2 o2 f2 h4 Y( c& l
- (command "") ; 输入结束
$ C" ]: t4 I5 `2 e0 u) M* B - (princ)
6 D5 H( d1 k4 ?) g A# ?, n - )
5 d* t! K6 I' Z$ _. S- Q0 g: u* g - 6 u$ c0 j. S- B: ~* X
- ;;;$ j" ?, {5 D! Y) A/ o! x6 M5 Z
- ;;; 生成三维弹簧函数调用接口
7 |( g. I) O0 i - ;;;$ |- g& z) m. b+ E; R, `! T
3 t+ t6 }) C* G0 R7 q% R% m: |- (defun C:3DSPRING (/ olderror cmdch blpmd cntPt RottCnt horiGrw vertGrw bgnRdtn ptCntPerCircle) 6 J; C# M" H! A1 N9 K
- (setq cmdch (getvar "cmdecho")) ; 获取cmdecho值，以便调用结束后恢复
- h$ O# |; f G6 N: a$ I& z0 c - (setq blpmd (getvar "blipmode")) ; 获取blipmode值，以便调用结束后恢复
) o# N1 E' c& m8 E - (setvar "cmdecho" 0) ; 关闭 cmdecho
$ G! j; m, n' k" s - (initget 1) ; cntPt 必须非空5 E0 @1 m& \' ?
- (setq cntPt (getpoint "
$ u: b5 F; E, v& A( A3 U, M - 请输入底部中心点: "))
' p5 _$ i9 u6 u( Q - (initget 7) ; RottCnt 必须非零、非空,不可忽略# g" r7 K( A, \$ s/ O
- (setq RottCnt (getint "
- s- V: w! o( d! E8 h' D - 旋转的圈数: "))
+ n0 C. ?4 R6 g; F - (initget 7) ; bgnRdtn 必须非零、非空,不可忽略
- L) |* } T4 \3 a - (setq bgnRdtn (getdist cntPt "
# Z3 W* R! q& U+ q* d$ U - 起始半径: "))/ s! t7 p4 a4 ~* q) x
- (initget 1) ; cf 必须非零、非空
, W1 k; M/ e! t. [ - (setq horiGrw (getdist "* i) |9 R6 N0 c/ I7 L) U
- 每一圈的水平增长距离: "))
% m3 N8 Z0 p8 R$ ?0 x: I7 B$ | - (initget 3) ; cf 必须非零、非空
. f' u8 {( c, X3 N - (setq vertGrw (getdist "
/ \0 c8 H* u; C9 v! ]) f. v - 每一圈的垂直增长距离: "))& M! j0 n: y) i/ p& a0 R
- (initget 6) ; ptCntPerCircle 必须非零、不可忽略
D6 D' Z+ U; ]) s) c" f5 c - (setq ptCntPerCircle (getint ": N. ?: x- s% n" F$ j& M
- 每一圈的插值点数<35>: "))
, W- u4 p. m9 q - (cond ((null ptCntPerCircle) (setq ptCntPerCircle 35)))
. X& D& O. U7 n; l6 g, [, D1 h+ n4 ^ - (spring RottCnt cntPt horiGrw ptCntPerCircle bgnRdtn vertGrw)
# e* X: S: [5 h, [6 M - (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值
g/ M1 C1 j- X/ G7 L' o - (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值
9 s* u: O" c/ y1 U1 j+ E - (setq *error* olderror) ; Restore old *error* handler
3 ~6 p8 ^2 f0 }0 s6 s - (princ)
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发表于 2006-4-14 13:10
发表于 2006-5-5 10:43
