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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1 q& I) y3 v, x: F3 t# Y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：6 {% U6 m/ p) V G! o) B
一、齿轮轮齿渐开渐开线
4 M+ ~7 }. U! z1 D
; z3 K4 P* h8 {6 g- (defun c:gear(/)
5 q! {9 P! l7 j+ q - ($ I O4 J- j' W& c/ e2 T; R% J
- setq8 z. ]1 h2 e0 B8 R' Z$ T. I' r1 Q" O
- p0 (getpoint"输入齿轮中心p0: ")8 w6 W. k1 S. z, y
- m (getreal"输入齿轮模数M: ")* Z7 {6 |" ?" T/ t6 q9 e) V
- z (getint"输入齿轮齿数Z: ")
5 ]# a* J" E: N, q& {, D - ha 1$ ~: r6 h5 t! ?9 ]: n* t9 G# Z+ _! d
- c 0.25
1 e5 O# L. _9 T4 z5 k1 C7 v - a (/ pi 9)
* h* g j4 ] A4 I1 D: y. G" b% [ - ra(/ (* (+ z (+ ha ha)) m) 2)* ]! T6 t( f" W+ R
- rf(/ (* (- z (+ (+ ha ha) c)) m) 2). E W) H. }/ ], K0 Y3 f
- r(/ ( * m z) 2), [& k7 q& d: \, s+ l
- rb ( * r (cos a)): |9 m: F4 I; h8 G; [
- ri rb- I$ `7 H; a3 l; M, F& Y. {8 k
- ang 0
/ J+ o4 Z3 O7 F" |3 M - g (polar p0 ang rb)* @9 R) ^- v2 b; r6 J" B" l
- )
# O- I( Z8 T* l- d1 t' N+ Y - (command "circle" p0 ra)
) K# j" x$ R# k- I- C& ~5 y" A3 k - (command "circle" p0 rf)4 F. _, ]3 n+ b( B1 c8 l
- (command "circle" p0 r)
' m* U' O; H: f% f# L8 { - (command "line" g)
5 u6 s, S2 ^ `5 D: K1 K3 Q - " [* h9 f" b5 v: I; [, ` k
- (while (< ri ra): o1 @: I8 Z) J+ z5 E; e* @
- (setq
" B. Q- L6 d3 z9 p6 W - ang ( + ang(/ pi 360))' L& T* l0 H9 p6 j8 m: O; u/ i
- ri ( / rb (cos ang))# v# T# s/ @$ d$ S/ A
- cta ( - (/ (sin ang) (cos ang)) ang)% y3 S- N5 J! A/ D* F0 s: {
- g(polar p0 cta ri)- r+ p f# K6 k! @! n
- ). O+ `( d7 R8 p4 N: z+ m* r4 y2 B8 b
- - M8 m5 [) @2 a% ~
- (command g)
- v! _6 M8 l. t, k. f# Q2 q) A - ): v* I9 x6 V f# W+ Z
- (command )
- t8 V; v# e' J7 P( s) O) T - )
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二、螺旋源程序 P/ M+ f _- X
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- (defun errMsg (s)
7 p1 M) [& p/ `6 @# L, L - (if (/= s "function cancelled") (princ (strcat ", \2 V4 V; Y) I0 W
- Error: " s)))4 d3 S$ s5 N' t5 b2 ~
- ; 当命令执行时出现错误' E+ p7 s" d* Q2 `* n G8 S
- (setvar "cmdecho" ocmdold) ; 例如用户按下了CTRL + C0 B9 e& g6 V u6 R) q
- (setvar "osmode" osmold)
( v& {4 K S, J) N+ ]/ C( e - (setq *error* olderr) ; 恢复旧的错误处理$ r# |* i2 U/ x* w7 R+ j6 U
- (princ)
7 D5 L% j8 K" E) j5 S8 i - )
0 W" Z* x2 l! P
! I+ H, v) {1 {- (defun c:3Dthread (/ radouter threadpitch threadlength threadangle
/ Q z4 y$ l! @! I - ptStart innerdiafactor radmid radinner ocmdold osmold 4H 5H 6H h6 g6); f! g! t0 M0 F+ z0 M& S
- ;-------------------------------------------------------------------: F1 s. D; G' p% y. w& o7 w. ^+ M
- ; 获取公制外径大小、螺距总长$ S6 X5 R0 Y8 u; r0 p/ Z
- ; 然后计算一系列几何点
3 R( f5 Z u) V* O4 b+ O0 } - ; 并且关闭对象捕捉、命令回显0 C! r7 K6 k, E, L
- ;-------------------------------------------------------------------
: [( N9 F# p( A1 r7 C: Y( `4 w0 @7 d - (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)) 3 [2 E1 j" l9 o) p; ~+ @, W, n
- (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))
8 ] Q0 E& e- d6 t& r& ~' b - (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))
. ^% Y# b1 @. L5 m* d4 b - (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))
" Q0 u: C, N+ D0 t* t: Y% J - (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)) $ t5 c8 i3 `9 _6 H# m
3 Y- o. d: t. b% E- Y" F; r- (setq osmold (getvar "osmode")) ; 保存调用前的osmode系统变量值( p6 n. [5 \* U5 a
- (setq ocmdold (getvar "cmdecho")) ; 保存调用前的cmdecho系统变量值; Q( n8 r `3 ~: S
- (setvar "osmode" 0) ; 关闭对象捕捉
; z* o, D- t% }, {; C8 c( ] - (setvar "cmdecho" 0) ; 关闭命令的回显
; F" Y% f$ m' c: ^9 ]0 C( r; c - 0 r. A. I) A7 |
- (setq innerdiafactor 1.5) ; 设置内径系数
& a' X2 z# d D$ V( G- k: l3 A - (initget 7) ; radmid 必须非零、非空、非负
, {/ U- t) T) h6 p6 f8 y - (setq radmid (getdist "2 G% x* r! e9 ]+ s$ E
- 公制外径: "))
+ Q1 Z4 @( C$ L/ S9 }7 ?4 J/ ~ - (initget 7) ; threadpitch 必须非零、非空、非负" m7 D; K. ?) [9 A( M. E; H- Z
- (setq threadpitch (getreal "( h$ @; D3 l, d
- 螺距: "))
" g2 e5 k; {# ~3 y+ ? - (initget 1) ; ptStart 必须非空7 g1 i+ b5 E3 F) K2 Z7 X# e
- (setq ptStart (getpoint "
& D4 z8 m3 r' ? - 起始点: "))
8 u# D8 u% ]* ^% _8 C: L& n- U - (initget 3) ; threadlength 必须非零、非空、非负+ ~# Q8 h1 d$ L( B
- (setq threadlength (getdist "
+ H' ]8 g% K( e6 ? - 螺纹总长(Y方向): "))3 v4 V' U2 S: b4 H# I6 b- \( o
4 g Y. D+ M2 Z& `$ a, C- ; 对公制外径添加公差. k+ G. f& Y% s
- (if (<= radmid 3) (setq order 0) ; 根据公制外径确定公差带中位置
( T: v: s5 X( R* w- f7 I7 Z - (if (<= radmid 6) (setq order 1)
: H8 k1 u& n! p: B0 c* m z2 A* K - (if (<= radmid 10) (setq order 2)
) c% F$ s5 c! B# M, M - (if (<= radmid 18) (setq order 3); O, d) J+ M0 J
- (if (<= radmid 30) (setq order 4)
- V7 j- M9 U: ?4 D- _ - (if (<= radmid 50) (setq order 5)
2 v2 F% v- P( N- ? - (if (<= radmid 80) (setq order 6)7 k$ Z; @1 E9 O& G9 v1 b
- (if (<= radmid 120) (setq order 7)
9 _/ |. f) r. |- t& e - (if (<= radmid 180) (setq order 8)
8 q" \9 z2 ?* u2 B, }+ i0 b - (if (<= radmid 250) (setq order 9)
0 n+ S% s3 K% k+ n - (if (<= radmid 315) (setq order 10)
' o- U2 j' Q! ]# F- a) w - (if (<= radmid 400) (setq order 11)# K& n* z0 N$ o1 f9 `6 x
- (if (<= radmid 500) (setq order 12)$ O( _7 X+ C! q8 y
- )))))))))))))
+ b1 s& m8 P/ k t - ! W$ `$ K& K8 f2 b: s! F
- (if (< threadpitch 0.25) (setq radmid (+ radmid (nth order 4H))) ; 根据螺距确定公差带- ]" b3 h* Y$ S) `0 c$ x/ t; M
- (if (< threadpitch 0.35) (setq radmid (+ radmid (nth order 5H)))
& p1 ~9 q$ ~/ m4 S, R" }$ `) G - (if (>= threadpitch 0.35) (setq radmid (+ radmid (nth order 6H)))
1 V$ V0 S1 m* z. g& y/ g - )))
0 k8 K$ F/ Q2 u7 t -
. t5 v3 a3 R% D - (setq h (* 0.866025 threadpitch)) ; 计算齿高
$ h) s/ K3 L; G" x) p6 _ - (setq radouter (+ radmid (/ h 4))) ; 计算外径
/ T4 Y0 P `$ [$ a! t- g) V: _ - (setq radinner (- radouter (* h innerdiafactor))) ; 计算内径4 H3 R) }5 p0 Q: _
- (setq threadangle (+ 30 0)) ; 计算齿顶角
& s3 ? ^ a F' }7 p# P% \ - 5 t2 }0 q2 X' ~: w' g, @4 m7 u1 P
- (auxithread radouter radmid radinner threadpitch threadlength threadangle ptStart) ; 调用绘制三维螺纹的子函数; p0 v) N1 A1 D! R! W6 M! @
$ J/ `% w8 \: N. @2 H- {! ^0 E& R- (princ "
3 s' ~/ C/ B' ?! `7 g - 三维螺纹创建完成")
0 \! Q3 E) `; O# P8 O0 S/ f2 G - (setvar "osmode" osmold) ; 恢复调用前的osmode系统变量值
. Z8 K; Q: O" x" s' J - (setvar "cmdecho" ocmdold) ; 恢复调用前的cmdecho系统变量值$ y9 D4 P( I: Y+ K5 Y1 N( i9 P9 f
- (princ)
A6 y* v2 |6 d) l# F - )) l5 p9 e& t- _
* _' k* U* e+ N& u2 b; f1 p) H- (defun auxithread (radouter radmid radinner threadpitch threadlength threadangle ptStart / ttal pt1z ang pt1a
( Z6 f3 Y) M% n0 P, ]. ~% A - pt1az pt3a pt1b pt1bz pt3b pttmp1 pttmp2 pttmp3 pttmp4 pttmp5 pttmp6 pttmp7 pttmp8 pttmp9 pttmp10 pttmp11 pttmp12 tstmp startcone endcone)
& \6 q$ h: S% i3 G
4 ~8 u' {( T! s/ a8 B. |' i) n- ;(command "undo" "begin") ; 开始undo步骤
0 V& t" E1 F3 I2 F& D5 T4 g - , R) T8 \ n) U. D) Z2 a" Z
- (setq ttal (+ (fix (/ (abs threadlength) threadpitch)) 3)) q1 H4 }& w2 b7 b" ]# n y
- pttmp1 (list (- (car ptStart) (/ radouter 2.0)) (cadr ptStart) (caddr ptStart))* x8 h, g' M& q. b1 u+ V+ v$ B
- pt1z (list (- (car ptStart) (/ radouter 2.0)) (cadr ptStart) (+ (caddr pttmp1) 1.0))( P8 \: {$ b- a' b
- pttmp2 (polar pttmp1 (/ (* threadangle pi) 180.0) 1)6 z5 j7 ]' s; T: r- i2 E J/ [
- pttmp3 (list (+ (car pttmp1) radouter) (+ (cadr pttmp1) (/ threadpitch 2.0)) (caddr ptStart))
; `1 _% c; q2 m/ }1 {; E: k - ang (angle pttmp1 pttmp3)# L4 c3 ~8 ?9 x+ C' G! L8 g8 V
- pt1a (polar pttmp1 (+ ang (/ pi 2.0)) threadpitch)
g5 s9 h) u* [1 W1 X- C4 Z - pt1az (list (car pt1a) (cadr pt1a) (+ (caddr pt1a) 1.0))
6 D" O8 `0 k2 X% j7 W8 O - pt3a (polar pt1a ang radouter)
. s. u4 n0 U9 b# }1 Z - pt1b (polar pttmp1 (- ang (/ pi 2.0)) threadpitch)
/ S5 b5 t$ \, D - pt1bz (list (car pt1b) (cadr pt1b) (+ (caddr pt1b) 1.0))
! u! ]& S# _2 y; N# c - pt3b (polar pt1b ang radouter)
2 ?& ^# L5 J& u% E6 i1 L4 r7 i - pttmp4 (polar pttmp3 (/ (* (- 180 threadangle) pi) 180.0) 1)$ i8 O$ \8 G9 m6 A$ j) F* n
- pttmp5 (inters pttmp1 pttmp2 pttmp3 pttmp4 nil)- |! N$ F. q: J3 {+ ?1 Q
- pttmp6 (list (car pttmp5) (cadr ptStart) (caddr ptStart))
8 D* a9 H0 b x0 Q' Z1 V+ W6 D - pttmp7 (polar pttmp1 (/ (* (- 360 threadangle) pi) 180.0) 1)
$ I" P* }4 V6 E5 \' l1 A- g - pttmp8 (polar pttmp3 (/ (* (+ 180 threadangle) pi) 180.0) 1)4 Z( B2 D7 y2 J: v; u3 S) t' C
- pttmp9 (inters pttmp1 pttmp7 pttmp3 pttmp8 nil)
; F" O8 a6 u$ O' U6 K1 T, m6 H - pttmp10 (list (car pttmp9) (cadr pttmp3) (caddr pttmp3))4 V7 H7 ?# E3 g: o: t& Q
- pttmp11 (polar ptStart (/ pi 2.0) threadpitch)1 J$ F+ j& g6 _. k1 z8 Z$ a$ R
- pttmp12 (polar pttmp11 (/ pi 2.0) (abs threadlength))( X% F: W7 D- u' O1 d
- )" Z. [$ C; G7 z$ U( O* y/ g
+ {; O. Z; x, C! ]7 z) a- ;-------------------------------------------------------------------# A# `& B" |7 r
- ; 绘制两个倒置的并偏移1/2螺距的圆锥
' A, g, `6 T. ` \% K* ?8 \ - ; 这两个圆锥都以中剖面剖分, v; L* L( l+ o' J% Z7 P: W5 ?( J
- ; 进行并集运算
. m! X6 N$ J Y; u% B1 i% V ] - ;-------------------------------------------------------------------' h, G2 F; C, }' ~, T
- C0 L7 z: L' @! a2 W) ]1 }/ ~- (SETQ startcone "order"); @0 F( z* c+ s
- (SETQ endcone "Y")% L' X7 [0 b+ V& O0 ~
- (command "zoom" "w" (list (car pt1a) (+ (cadr pt1a) (abs threadlength)) (caddr pt1a)) pt3b)) |9 G- \9 M5 }2 n y( R: j
- 8 s4 w2 \2 }: x: p: N% B
- (princ "
' S3 N1 b5 r" p7 Z7 \ b - 正在绘制三维螺纹，请等待")% R9 m) B2 ?' Y" p- {+ i
- (command "pline" pttmp1 pttmp5 pttmp6 "c")
2 ~) Z) X9 P+ A; W4 i - (command "revolve" "l" "" pttmp5 pttmp6 "")
( k- [$ L# q0 _" i) a X4 H - (command "slice" "l" "" pttmp1 pttmp3 pt1z pttmp5)
4 `+ b$ G, b% [! f1 S9 W - (command "slice" "l" "" pt1a pt3a pt1az pttmp3)
" j; K0 k: ~7 K) D, `* ] - (setq tstmp (ssadd (entlast)))
$ U& o1 L J' H: q$ l% I, s6 b - (command "pline" pttmp3 pttmp9 pttmp10 "c")
6 G4 ?' R: K) V* ? - (command "revolve" "l" "" pttmp9 pttmp10 ""). L* M7 E) R6 y. w
- (command "slice" "l" "" pttmp1 pttmp3 pt1z pttmp9)
' M! n5 p$ [- }2 O - (command "slice" "l" "" pt1b pt3b pt1bz pttmp3)
/ i& \ f1 c/ `4 ?5 A; n% _ - (setq tstmp (ssadd (entlast) tstmp))
9 J2 t- B1 u7 Y" y2 E0 m% b - (command "union" tstmp "")
* P4 d. M2 S |( S/ E: J" U - + q6 l; Y$ X2 w
- ;-------------------------------------------------------------------
/ q) O( K( _9 f x; l - ; 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7 J4 C y1 l7 \( v7 E# L
- ; 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/ d8 f& r4 C7 w, v
- ; 在最后一步被切除
4 S: _. a5 \9 x5 z1 B- D/ V - ;-------------------------------------------------------------------
' X7 x, |$ H2 h& A - % k0 j x% y8 @5 L) {( |
- (command "slice" tstmp "" "xy" ptStart "b")
4 _/ e( D" \: g! R - (setq tstmp (ssadd (entlast) tstmp))
2 [1 b3 C) I+ @9 K4 a' Q- \ - (command "mirror" "l" "" pttmp1 "@10<0" "y")
! ~! O0 G; ~/ P2 j9 L+ n - (command "union" tstmp "")7 _' h$ y9 X* _
- ( Z @* v, a" x4 J2 t) f
- ;-------------------------------------------------------------------
v+ j3 e5 K0 Y/ V - ; 螺旋进行阵列操作，然后再作并集（可能会耗费一定时间）! y/ N3 F" y2 c
- ; 得到的实体再切除到指定的螺旋高度
! e' t- Q% C9 E$ n! X5 O& ` - ;-------------------------------------------------------------------
( t& [# [% d* f1 S
j3 Z: g! c& d8 l m- (setq e (entlast))6 l$ P7 K& i+ f- O+ I0 l/ U
- (command "array" tstmp "" "r" ttal 1 threadpitch)
0 @6 |- N# {* U - (repeat (1- ttal); b$ Z% X% f- o! n! E
- (setq e (entnext e), g. l/ ?* e# X' C3 G& Z
- tstmp (ssadd e tstmp)9 e- H7 D! n& ?
- )
3 q- d1 N0 S9 n$ P3 g - )& e# P. C0 ]9 f
- (command "union" tstmp "")
, ^4 E, H# J7 e$ Y! Z6 O - 3 X) J( I7 d0 h' a$ T* E- E8 L
- ; 若开始创建45度的圆锥7 L; S9 N/ Y4 Z/ c, [! o' m1 U
- (if (/= startcone "order")( m+ i8 K1 R6 a9 }
- (progn (setq e (entlast)): I) K$ H8 c. {7 H- s
- (command "cone" (list (car ptStart) (+ (cadr ptStart) threadpitch) (caddr ptStart)) "d" radmid "a" (list (car ptStart) (+ (+ (cadr ptStart) (/ radmid 2)) threadpitch) (caddr ptStart)))1 ?8 h+ x" j9 w
- (command "union" "l" e "")
3 c; P5 m9 U0 r4 } L - )
3 U, n/ o) q3 q" M* Z - )# O1 M1 N- X+ x8 ^! t! N
- 9 f* d0 l0 w$ x6 a# g3 \
- (command "slice" "l" "" "zx" pttmp11 pttmp12)
5 c. w0 X# p/ ? `9 W5 l - (command "slice" "l" "" "zx" pttmp12 pttmp11) ~8 d& L( w* F# a- F3 b3 x
- (command "move" "l" "" ptStart (list (car ptStart) (- (cadr ptStart) threadpitch) (caddr ptStart)))
9 k5 {3 H2 ?1 s+ v5 K' M% s - * b! x% H, ]$ n9 J
- ; 创建最小直径的圆柱体，然后与螺旋作交集5 g1 O, i9 g( q* x
- (setq e (entlast))% M: y7 I$ V) q I9 c- P( L
- (command "cylinder" ptStart "d" radinner "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart))), R k& t) H" k4 \
- (command "union" "l" e "")
* j9 z0 U2 B; i3 c. C& w4 u/ ~) l - (setq tstmp (entlast))
" i9 P! {& L, w8 W' H - 5 l% V0 v4 I. S2 _
- ; 创建中空的圆柱体
0 p1 e- U$ N& V) B- X - (command "cylinder" ptStart "d" radmid "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart))) ; minor dia2 j0 G" {/ d2 l9 U* d Q0 y
- (setq e (entlast)): g- l* p1 s; ~6 Z }$ c% v* V1 ?% X
- 6 \& k% P, o* o% E+ j9 z6 E% |
- ; 若最后创建45度的圆锥: }$ y5 Z; b/ E4 w$ k
- (if (/= endcone "order")- y5 T6 L6 u' s4 A% c; M8 U+ K }
- (progn (command "move" "l" "" ptStart (list (car ptStart) (- (cadr ptStart) (/ (- radmid radinner) 2)) (caddr ptStart)))
" B% S0 h3 y8 \$ U& Y; ]+ u - (command "cone" ptStart "d" radmid "a" (list (car ptStart) (+ (cadr ptStart) (/ radmid 2)) (caddr ptStart))) % P, i6 J) [! h
- (command "move" "l" "" ptStart (list (car ptStart) (- (+ (cadr ptStart) (abs threadlength)) (/ (- radmid radinner) 2)) (caddr ptStart))); ?# n! s# D! ^/ T. N! n( Y
- (command "union" "l" e "")
. }: d$ p, h8 s - (setq e (entlast))
0 C( }9 S" |" \) _. W - )+ F# A1 o0 r+ }0 e" o4 u4 o
- )
. r: \5 \& F) Z5 @* j - % Q( h2 {3 y0 F* B1 v C; c, `2 i# y* o
- ; 从大圆柱中减去小直径圆柱
+ Y9 \' h- P3 Z4 @4 j' P - (command "cylinder" ptStart "d" (* radmid 1.5) "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart)))' G3 A0 g3 ]# }( O4 L; k
- (command "subtract" "l" "" e ""). y i- R' A- h4 r
- (setq e (entlast))
, o0 @: ?: Q# _$ x
, c* v; F1 `; J1 I- ; 从螺旋中减去圆柱/ w& X/ W2 q+ d* p8 K
- (command "subtract" tstmp "" e "")
" W8 M& Q0 B r: R5 o7 o - % s' d- x4 n" a5 W1 Q
- ; 如果螺旋长度为负然后镜像- v, f6 o1 \# j1 g. r( W7 H9 t! ~2 V
- (setq e (entlast))% m4 d; Q" F. T( I
- (if (< threadlength 0) (mirror3d e "zx" ptStart "y"))5 G: t! d2 k0 V# @& m# P
8 h; l1 M+ t# K& Z4 Z( q- (command "zoom" "p")2 g$ g1 S0 O8 p4 K* N* b
- ; (command "undo" "end") ; 结束undo步骤7 v' o" v0 Z2 M$ J* ?
- )9 `: \. z' M% G1 x
- . |2 g5 e" x+ ^+ h
- ;;;---------------------------------------------------------------------------------------------------------------------;/ y/ ~: c' n/ m: o2 P ]6 t3 U, F1 X) q
- (arxload "geom3d" nil)
( R8 ^) ^/ H$ n/ J) V - (princ "! @9 S4 H3 S' N4 s5 F `/ {
- 3DThread 已加载。 ")
5 e }& ~/ r2 Z0 \5 Z - (princ)
" L8 r0 c/ f: N# u
. }2 q+ _+ `# Z, w2 l5 O' n& F6 J. [( ^9 p( }
% g! b& t3 N2 d7 k4 W三、弹簧源程序' K( K% j$ O3 u6 y
- (defun errMsg (s) ; 当命令执行时出现错误 0 L3 P4 D+ K2 ` e/ k
- ; 例如用户按下了CTRL + C6 y$ m+ l" q2 ]8 b+ {
- (if (/= s "Function cancelled")
" ?* b: R, x& w8 y" g - (princ (strcat "+ |* X) m2 X5 O# ~
- Error: " s))
: t9 [4 m+ ]0 ^4 A% r/ n5 O - )4 T; Y- |4 D/ m' B: Y' q
- (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值- O$ h) e* m E4 n5 ^# y
- (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值
+ Q3 ^. r! e- z; I1 K - (setq *error* olderror) ; 恢复旧的错误处理1 X/ _3 O+ Y& U: x0 N8 R& D
- (princ)
2 Q0 R1 e6 b2 f5 W - )
7 t2 y$ C* {9 I4 K
: C9 U' a, \. R# Y7 ~7 D1 S W- (defun spring (nRepeat cntPoint bhfac lr strad bvfac
1 w7 w" H4 {; x# z% P7 T4 B/ T - / angle distnc tp aGrw dhGrw dvGrw Pi2 dv)3 D5 i; l& G0 s/ ^# y
- ) c1 I; Z$ `. P) v4 C7 _
- (setvar "blipmode" 0) ; 关闭 blipmode r' z: r2 w# r0 v6 n) U) {
- (setvar "cmdecho" 0) ; 关闭 cmdecho, \. F, A6 r8 Q( `9 h) o, }
- (setq Pi2 (* 3.14159265 2))
7 U) [% t8 V6 I& z' r4 |" J - (setq aGrw (/ Pi2 lr))
1 C5 m8 V. q1 [ - (setq dhGrw (/ bhfac lr)); X# X" g) H" {' M
- (if bvfac (setq dvGrw (/ bvfac lr)))5 _& ~1 p/ c% l- w& O% L% T
- (setq angle 0.0)
* ~% A! k3 L+ \' D! k5 E8 o. q - (if bvfac' r P2 | O5 Z- Q" a0 T9 A. d
- (setq distnc strad dv 0.0)2 B0 A3 ]" X8 u1 C% C
- (setq distnc 0.0)9 }1 ?+ i, r6 U7 g# h
- )( G; ]- f* a7 b& w2 r; x3 l
- (if bvfac & |, C5 c8 ]6 u/ W. C" J9 l
- (command "3dpoly") ; 开始绘制弹簧
' M+ b. M5 A6 c2 b, a! G; ? - (command "pline" cntPoint) ; 从基点开始绘制弹簧
' H, N& ?% p% E3 t# z4 [- A - )
: |* p- |1 T. @ l' T - (repeat nRepeat 2 R8 `" A; T" w- B$ N
- (repeat lr 0 y7 X- M- k( r/ Y, }
- (setq tp (polar cntPoint (setq angle (+ angle aGrw))
2 h. p+ e1 m* E- ~ - (setq distnc (+ distnc dhGrw))4 U; B8 T7 v/ x7 Z: W1 A" ^
- )+ [/ N# m/ l } X$ z7 g5 ^
- )
! { p8 _$ ^. t4 T - (if bvfac0 z+ S- a3 h, C3 v+ ]; i) X
- (setq tp (list (car tp) (cadr tp) (+ dv (caddr tp)))
: y5 z; ^) s9 ^9 \# t& ?+ | - dv (+ dv dvGrw)5 { {, I& }' e" U
- )# ^" [1 y, a2 W v2 h( \
- )/ F5 p( a: h5 B/ j0 s' G3 q
- (command tp) ; 继续输入下一点
0 f/ W8 j* O$ q( t$ _4 l - )
7 n' R- E7 P( t! {; D - ) 8 _! ~3 P: g( d
- (command "") ; 输入结束
3 C. `- U& n7 ]1 B l/ S - (princ)9 T0 {3 a5 u; `& V) t
- ) 6 d1 a& d; S8 [, r, I9 i, i
- , c/ i4 h( l* `2 Q$ ~
- ;;;: q: i+ _ D6 b$ M; F
- ;;; 生成三维弹簧函数调用接口
$ k; [; f) W, q* s - ;;;
9 r8 T* D- E8 ?' P5 Z/ M. w - ( [. A; }6 P# B/ |. Q+ n+ Z
- (defun C:3DSPRING (/ olderror cmdch blpmd cntPt RottCnt horiGrw vertGrw bgnRdtn ptCntPerCircle) 8 X* }9 p! | d7 L. O e
- (setq cmdch (getvar "cmdecho")) ; 获取cmdecho值，以便调用结束后恢复2 d1 w7 B' _2 ?3 w+ q
- (setq blpmd (getvar "blipmode")) ; 获取blipmode值，以便调用结束后恢复
0 G/ }2 i8 o* m, B0 S+ \: ? - (setvar "cmdecho" 0) ; 关闭 cmdecho 0 `/ n9 A0 ^. Y, P+ E1 I
- (initget 1) ; cntPt 必须非空
6 f7 E- k( p! a/ [8 W9 Q - (setq cntPt (getpoint "
6 R% m1 \9 S9 U, u% Z9 y. M5 } - 请输入底部中心点: "))
4 O) [" w ]7 _ H b - (initget 7) ; RottCnt 必须非零、非空,不可忽略
" U. |3 ~( @- D$ w2 ~* r - (setq RottCnt (getint "4 `, q) K+ t% {4 P5 c( M, ]) B
- 旋转的圈数: "))
L2 L' c9 W: r2 ^0 ]5 f/ ~/ b9 D* M - (initget 7) ; bgnRdtn 必须非零、非空,不可忽略
1 V0 r ^6 }# c' U5 ?- `4 b t - (setq bgnRdtn (getdist cntPt "$ Z+ Q3 |* y4 D6 t8 G1 Q
- 起始半径: "))
1 t# B6 x9 O6 [7 x& w) e - (initget 1) ; cf 必须非零、非空' Z# F) P; J J8 [- o% q% m m
- (setq horiGrw (getdist ") V/ V9 U) E$ ]* a2 _
- 每一圈的水平增长距离: "))6 T' p- C5 `# `; w' \' Q* R# ^0 E
- (initget 3) ; cf 必须非零、非空
4 r i1 C7 B1 l( m - (setq vertGrw (getdist "
5 c9 E% M0 C' K - 每一圈的垂直增长距离: "))% S$ p/ A( W) P3 _7 P! o4 E
- (initget 6) ; ptCntPerCircle 必须非零、不可忽略
: d+ ~2 M+ K ] - (setq ptCntPerCircle (getint "
$ [% _, T5 b, i. N, N - 每一圈的插值点数<35>: "))
+ {# J- i2 _( D2 T& a: N3 R" H - (cond ((null ptCntPerCircle) (setq ptCntPerCircle 35))) # ~9 |$ i/ b( Q$ m8 q' p
- (spring RottCnt cntPt horiGrw ptCntPerCircle bgnRdtn vertGrw)7 \' j$ T. v: O& @. p7 a) F0 p0 D
- (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值
6 ^0 C0 D. X- X* k `" [7 o - (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值
6 c/ |6 _$ P: d/ g - (setq *error* olderror) ; Restore old *error* handler
% a4 O; r; `7 G. ^7 j2 w+ _8 ` - (princ)9 [, o) v7 a" R7 C9 f" }) k- h, w
k% c+ _) J4 @! o4 z# x- )
, |% z( r* e+ F8 c9 t" [
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发表于 2006-4-14 13:10
发表于 2006-5-5 10:43
