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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3 a' _2 h3 a$ r# F& @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：1 ?9 q8 G# `# d8 Q
一、齿轮轮齿渐开渐开线+ O3 R- N- r- m8 m$ B
! y) C: g9 N9 @2 c; h+ X# Z- U- (defun c:gear(/)8 U5 J6 R7 [, m# h+ v* w; U
- (
/ C2 i0 M+ `% \- e4 H8 O - setq1 n+ K" v$ X) u
- p0 (getpoint"输入齿轮中心p0: ")
& d8 |+ Q4 g, O8 E8 ^4 {) A6 m - m (getreal"输入齿轮模数M: ")" ?1 H: d" R( ?, r# o( ]; n
- z (getint"输入齿轮齿数Z: ")
$ }* x5 A4 l x3 P3 o) u9 c - ha 1
- ?* v/ T- n9 V! Y8 i3 y - c 0.25/ v1 n8 U4 W2 p; w9 X6 e
- a (/ pi 9)! T8 K( n' t2 P0 _
- ra(/ (* (+ z (+ ha ha)) m) 2)5 w8 q% K3 R' `& {/ U/ s
- rf(/ (* (- z (+ (+ ha ha) c)) m) 2)/ ?7 b4 ]& D& L
- r(/ ( * m z) 2)9 f+ _0 L- Q: \" B3 D9 n, j ^
- rb ( * r (cos a))6 r. x& q/ L' }, p8 d& o# x
- ri rb
3 _! a. P" J6 ^+ m+ r# I, m - ang 0) D9 V, s+ R' @. q0 F( H, D& P5 Y
- g (polar p0 ang rb)3 L# M: N5 k7 e- ], g
- )
- k5 f# ^% Q7 h8 D6 ^1 k- q, ~1 Y - (command "circle" p0 ra)- f" q- T; s! K6 X; e" W
- (command "circle" p0 rf)
9 M5 k, ~6 n- S. S - (command "circle" p0 r) J9 R7 }6 j" h) }9 }/ |0 T
- (command "line" g)
# z! t& w. E& E6 x* e - 8 o1 L" s& |. a2 f/ E/ M. A: F" Z
- (while (< ri ra)
. f. t; ?" V. N$ x2 p8 \+ o( ^ - (setq' x' m D* X) Z, A4 s: T4 p4 S3 o% I9 f
- ang ( + ang(/ pi 360))
* D2 S3 D% A( v" d# t, Y - ri ( / rb (cos ang))5 \. {+ x1 @& G6 {3 X- |
- cta ( - (/ (sin ang) (cos ang)) ang)# X% |0 F6 ~" j. L
- g(polar p0 cta ri)/ V1 \; m6 H- B }
- )' e% J) D1 n' g8 v( S P
- & X! A+ y5 e+ L# {6 f! G% g3 g+ C: t
- (command g)' Z2 h& s- P5 p
- )! k" N1 S7 `9 M! B( P4 A
- (command ) v4 {- j7 Q: S& h2 z: c# S
- )
; l' Y; g9 K( P/ G
3 H. ] }* ~/ j9 G! ?: q) U- T2 F3 X* r% U
8 z8 D: b5 x# P9 M" Z# s# C
二、螺旋源程序( U& ^/ b2 Z' r+ L5 a
6 ^8 V, f8 [) Y! i
- (defun errMsg (s)6 v+ o8 w& q+ e5 C
- (if (/= s "function cancelled") (princ (strcat "
8 V5 v. s2 p: F: f - Error: " s)))* a t# `$ b) N% s; I% ?2 a/ W$ {; U7 w r
- ; 当命令执行时出现错误
$ o# v' R" x* E) \: D0 A - (setvar "cmdecho" ocmdold) ; 例如用户按下了CTRL + C) P" L8 ?1 _$ ]# ]
- (setvar "osmode" osmold)/ V' o7 X3 k; ^+ L& F
- (setq *error* olderr) ; 恢复旧的错误处理3 g2 K7 T$ f* I/ e$ d6 t$ v
- (princ)1 O0 h4 P+ \! K0 a7 \& @
- )# ?% D" Q# @+ X' Z0 y$ c3 k
- ; e- {6 A! b% v1 F! y d
- (defun c:3Dthread (/ radouter threadpitch threadlength threadangle
- N$ \0 c2 D$ R) t- W+ Z - ptStart innerdiafactor radmid radinner ocmdold osmold 4H 5H 6H h6 g6)9 p9 l- u* n, c2 {' a7 y
- ;-------------------------------------------------------------------
% \. p# O6 s$ g+ B. L - ; 获取公制外径大小、螺距总长3 ]1 i8 s. x, h$ _0 w' \
- ; 然后计算一系列几何点% ]# O' R' j/ X3 e- ^
- ; 并且关闭对象捕捉、命令回显# t1 O1 r: c. h7 _6 l0 ~ E; ^
- ;-------------------------------------------------------------------
0 b/ ?" e) k& b& ]% ~ - (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)) # z7 T: m' m* p [3 I
- (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)) : g$ o) V% O( @* S9 Q& `; E( 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)) 0 D8 v) ~7 \$ V# Q' e
- (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))
+ I% \. e% u/ Y - (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)) $ [6 h! F% c6 u, l' N) `' E
- 1 |+ [ t* u) D( M
- (setq osmold (getvar "osmode")) ; 保存调用前的osmode系统变量值
! j6 Z2 v: m2 k4 X8 M* [& s$ ? - (setq ocmdold (getvar "cmdecho")) ; 保存调用前的cmdecho系统变量值
! A! P4 W4 [8 T. w H% d" O5 q - (setvar "osmode" 0) ; 关闭对象捕捉 & J/ c0 v, P, B3 O, z3 v
- (setvar "cmdecho" 0) ; 关闭命令的回显8 x% T' z5 ?/ ^
- S m- d# f5 d$ ]1 L* c. ~
- (setq innerdiafactor 1.5) ; 设置内径系数
' W8 A5 r3 B2 s* G. `! ]9 J$ X - (initget 7) ; radmid 必须非零、非空、非负0 F- Z! v" P) ^7 d# T
- (setq radmid (getdist "
& O, ^) h8 V a1 m5 z: }. a: a - 公制外径: "))
( U h0 a$ x; D1 O; }2 Q9 `+ \ - (initget 7) ; threadpitch 必须非零、非空、非负
* B9 ]% V' E. W* k - (setq threadpitch (getreal "
0 e6 r0 ?# v: }2 q7 T B U - 螺距: "))5 y9 m/ e& q0 M+ J1 A4 a
- (initget 1) ; ptStart 必须非空. i( R1 c1 B* t4 e: L
- (setq ptStart (getpoint "
% c) H5 c1 Y" m) X1 o& r - 起始点: "))
4 A3 e( U/ ]9 o* g$ l1 _* s - (initget 3) ; threadlength 必须非零、非空、非负
. \( ]' l& L% Z7 \7 ~/ ^1 M - (setq threadlength (getdist "
( T$ c* \* K2 u/ s* I; R. n - 螺纹总长(Y方向): "))+ |" q) y4 u1 u, o2 W* W
$ a; O8 d) |8 Z1 r1 b- ; 对公制外径添加公差! A2 f8 ^( d/ a9 E0 b# w
- (if (<= radmid 3) (setq order 0) ; 根据公制外径确定公差带中位置
% n9 [ y8 k0 }8 w, y! ~ - (if (<= radmid 6) (setq order 1)
4 x# p u" p6 i' h) _4 }% d - (if (<= radmid 10) (setq order 2)
( s! |, i w1 T7 Q, B4 g - (if (<= radmid 18) (setq order 3): I3 a$ N ?' \9 v& @( E
- (if (<= radmid 30) (setq order 4)6 Q+ g; a* s8 N6 W5 K( g! E
- (if (<= radmid 50) (setq order 5)
6 m5 Q, v5 g( P - (if (<= radmid 80) (setq order 6)2 b8 X8 l n- ?8 Y3 Q9 d `
- (if (<= radmid 120) (setq order 7)4 [1 ^3 ]) X8 B# V
- (if (<= radmid 180) (setq order 8)
; b1 K( Q3 K2 O! D4 O - (if (<= radmid 250) (setq order 9)1 N+ Q' N4 Y, F' U. j9 u5 {, _# _
- (if (<= radmid 315) (setq order 10)0 ?- N$ K) L# t+ C+ |
- (if (<= radmid 400) (setq order 11)' h3 G& D2 a. E7 z( q) Z
- (if (<= radmid 500) (setq order 12)
8 j7 T9 Z9 A, [, F- G: m' ~3 z O - )))))))))))))" ?% O' E% ~+ S. u1 B+ t2 A1 Y
/ `0 K& m3 n- U6 y. U" }- (if (< threadpitch 0.25) (setq radmid (+ radmid (nth order 4H))) ; 根据螺距确定公差带
: d. z4 N; x% O. k6 k. V% D - (if (< threadpitch 0.35) (setq radmid (+ radmid (nth order 5H)))
! u8 `4 C# F6 _# U3 G4 S - (if (>= threadpitch 0.35) (setq radmid (+ radmid (nth order 6H)))' P3 C# i2 W, B, C+ w2 U( w: z
- )))
& D- J3 N$ v9 W: X L) p& | - : [4 q: l% I4 ~% [
- (setq h (* 0.866025 threadpitch)) ; 计算齿高8 F5 ~4 U$ O( t# ^
- (setq radouter (+ radmid (/ h 4))) ; 计算外径; E' T+ P0 y; w( I- m
- (setq radinner (- radouter (* h innerdiafactor))) ; 计算内径, R8 l# x }: |; X0 j; \( o
- (setq threadangle (+ 30 0)) ; 计算齿顶角8 M6 m: r# `7 q' y* E
. k1 b9 p' |5 {3 ^ n" e- (auxithread radouter radmid radinner threadpitch threadlength threadangle ptStart) ; 调用绘制三维螺纹的子函数1 s& l, a, L2 J3 o2 r- e
- $ `6 F+ Y8 P1 g
- (princ "7 P5 s S2 K& n. n4 D* Q O
- 三维螺纹创建完成")* ^7 c& Q: I( S7 j& C: u0 b
- (setvar "osmode" osmold) ; 恢复调用前的osmode系统变量值+ n" Q1 M! ^# @. U+ m+ F' c
- (setvar "cmdecho" ocmdold) ; 恢复调用前的cmdecho系统变量值, c1 Q" R, [3 f
- (princ)# u- [5 g1 M5 x& N6 |% L, W5 z
- )/ ~" A" g3 {" _) s6 e
2 N' l8 b" n4 t( T" x1 L- (defun auxithread (radouter radmid radinner threadpitch threadlength threadangle ptStart / ttal pt1z ang pt1a
* V/ G2 |3 A# Z0 L' H, Z! E. x - pt1az pt3a pt1b pt1bz pt3b pttmp1 pttmp2 pttmp3 pttmp4 pttmp5 pttmp6 pttmp7 pttmp8 pttmp9 pttmp10 pttmp11 pttmp12 tstmp startcone endcone)
' W7 }3 L$ q, M - : f$ X+ ?: {& p" O
- ;(command "undo" "begin") ; 开始undo步骤! O5 r8 r) q. o4 U
- 5 `# U5 b( `, M) Y
- (setq ttal (+ (fix (/ (abs threadlength) threadpitch)) 3)3 a3 e9 p& U- l4 c/ [% f% e T6 f
- pttmp1 (list (- (car ptStart) (/ radouter 2.0)) (cadr ptStart) (caddr ptStart))7 U7 i7 o9 a8 }% E+ f: f# }, E0 `* J
- pt1z (list (- (car ptStart) (/ radouter 2.0)) (cadr ptStart) (+ (caddr pttmp1) 1.0))) o/ c' r/ d7 U0 G3 u# X# p
- pttmp2 (polar pttmp1 (/ (* threadangle pi) 180.0) 1)
o* `% ~, |- r' o) g - pttmp3 (list (+ (car pttmp1) radouter) (+ (cadr pttmp1) (/ threadpitch 2.0)) (caddr ptStart))1 X8 l" R" N1 f$ A
- ang (angle pttmp1 pttmp3)
, ^9 ~, w0 Y3 y! o! @: Q! I - pt1a (polar pttmp1 (+ ang (/ pi 2.0)) threadpitch)( o8 x3 i0 m6 ~0 S" L0 i, g" |
- pt1az (list (car pt1a) (cadr pt1a) (+ (caddr pt1a) 1.0))
# _+ y0 {; n( n% L/ c# k5 q - pt3a (polar pt1a ang radouter)
, ?4 Q5 R; h/ U - pt1b (polar pttmp1 (- ang (/ pi 2.0)) threadpitch)
9 v* H% L' s; i - pt1bz (list (car pt1b) (cadr pt1b) (+ (caddr pt1b) 1.0))0 t2 c5 z$ [2 k2 g/ v _$ W1 U
- pt3b (polar pt1b ang radouter)& S, P. R7 A9 f! E# O
- pttmp4 (polar pttmp3 (/ (* (- 180 threadangle) pi) 180.0) 1)
4 J$ T8 ?# w+ g' [- e V. U | - pttmp5 (inters pttmp1 pttmp2 pttmp3 pttmp4 nil)$ q, `" m: `$ {8 x7 M* m1 Z1 I
- pttmp6 (list (car pttmp5) (cadr ptStart) (caddr ptStart))
( O: R4 b) ]5 J. B8 \" ^ - pttmp7 (polar pttmp1 (/ (* (- 360 threadangle) pi) 180.0) 1)" ~$ l- S' i' O) d
- pttmp8 (polar pttmp3 (/ (* (+ 180 threadangle) pi) 180.0) 1): e |* o; \# X2 L
- pttmp9 (inters pttmp1 pttmp7 pttmp3 pttmp8 nil)
6 l- t/ s5 }+ T9 _- y$ S - pttmp10 (list (car pttmp9) (cadr pttmp3) (caddr pttmp3))
- j; B0 H t9 U - pttmp11 (polar ptStart (/ pi 2.0) threadpitch)
2 ~+ h; _0 m4 S8 g - pttmp12 (polar pttmp11 (/ pi 2.0) (abs threadlength))5 R& N' i, r4 V4 y7 V, `8 b: F
- )
1 R2 _, j0 n- H5 X
+ o9 L( ^$ L; k& R/ p- ;-------------------------------------------------------------------4 J' ~. w7 }; w# N5 {0 J
- ; 绘制两个倒置的并偏移1/2螺距的圆锥
4 h m# T0 U4 V, f% s3 u' d - ; 这两个圆锥都以中剖面剖分
- n A6 C( a7 r( l7 } - ; 进行并集运算4 p" @# t$ ]! E1 b
- ;-------------------------------------------------------------------
* d0 q2 r4 G/ S* N
& y7 L# j( u0 r5 {0 g: u$ I- (SETQ startcone "order")" [. B! @' ]+ r8 U8 U+ h! y" T
- (SETQ endcone "Y")& [" a& Z$ V0 O' P
- (command "zoom" "w" (list (car pt1a) (+ (cadr pt1a) (abs threadlength)) (caddr pt1a)) pt3b)) a$ Y: }, g, h
3 A6 `7 {( h) @. J; w1 x- (princ ". ~9 ?0 @" P, V1 G, Q
- 正在绘制三维螺纹，请等待")5 g% h6 a0 N8 r5 ?1 C
- (command "pline" pttmp1 pttmp5 pttmp6 "c")
: M2 b8 ^- \. C) q" R0 s - (command "revolve" "l" "" pttmp5 pttmp6 "")
. |0 _0 w% c7 [+ A% o; T7 [) M# s - (command "slice" "l" "" pttmp1 pttmp3 pt1z pttmp5)
% M1 l0 c3 |- g9 d- C4 | - (command "slice" "l" "" pt1a pt3a pt1az pttmp3)5 @" W8 x" |1 O; y" a
- (setq tstmp (ssadd (entlast)))
6 Q$ m1 k3 Z( \+ | - (command "pline" pttmp3 pttmp9 pttmp10 "c")
- S. q" d' n; ^- c" w& x2 P - (command "revolve" "l" "" pttmp9 pttmp10 "")
r+ q% F. ~/ p" r& J3 z) y - (command "slice" "l" "" pttmp1 pttmp3 pt1z pttmp9)
! c. k# E' V; e" B% z - (command "slice" "l" "" pt1b pt3b pt1bz pttmp3)8 D. ` e" F2 K1 K! O+ F" W
- (setq tstmp (ssadd (entlast) tstmp))( @8 w. u2 E% [6 v
- (command "union" tstmp "")
/ |9 `* Z' ~/ ?4 w) T, ^ - - W3 x- r1 `' _2 P0 b2 E+ J( c9 k8 s: P+ T
- ;-------------------------------------------------------------------
* x$ s: G% H5 U/ I - ; 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
' y e! _& N! \" p# C! 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
! U2 O: B0 S2 Y( ~ - ; 在最后一步被切除
! f% f8 t( x) z' J! X3 U - ;-------------------------------------------------------------------
F4 \ S9 [) K( d r# w5 c - * Z" e1 c$ Q6 q- c' G! `# j6 E; e
- (command "slice" tstmp "" "xy" ptStart "b")3 T: [) o# k: W3 J
- (setq tstmp (ssadd (entlast) tstmp))
- F" J+ G! v8 V4 ] - (command "mirror" "l" "" pttmp1 "@10<0" "y")+ A0 z2 {( i( B+ j- [2 f
- (command "union" tstmp "")
- G7 _. _: D4 k% ^; k5 a - 3 Q7 Z3 A1 Y/ R7 w9 b0 i
- ;-------------------------------------------------------------------
3 d7 q3 @: T/ l7 `8 n" f - ; 螺旋进行阵列操作，然后再作并集（可能会耗费一定时间）
1 x' \) ^% c; N - ; 得到的实体再切除到指定的螺旋高度4 z& T3 j& {" K
- ;-------------------------------------------------------------------
& R% Z, G8 f5 {3 W' b( _! c
2 X4 Y* M+ i4 j) z5 n- t0 A) ?" j1 T- (setq e (entlast))! r+ O( [) o2 O$ q, G1 F
- (command "array" tstmp "" "r" ttal 1 threadpitch)
+ f; J7 \6 r9 M+ q: A. t1 t' y - (repeat (1- ttal)3 Y3 D9 d/ L+ N" @
- (setq e (entnext e)
4 s, U. d6 G8 q8 q h - tstmp (ssadd e tstmp)
+ {0 u6 S, [1 m - ), C& V+ d9 z2 L$ Q# }
- )6 q( ^) c# g$ ~1 ^! Y/ b5 M9 Y5 Q
- (command "union" tstmp "")
2 V2 F0 d9 r% ^" e
" P: m1 N" x! @" V3 R4 a/ [/ Q- ; 若开始创建45度的圆锥4 i* ]. u! M' R0 I* Z, c+ b
- (if (/= startcone "order")
% g( `% n1 X$ I - (progn (setq e (entlast))
d6 A ?4 n | - (command "cone" (list (car ptStart) (+ (cadr ptStart) threadpitch) (caddr ptStart)) "d" radmid "a" (list (car ptStart) (+ (+ (cadr ptStart) (/ radmid 2)) threadpitch) (caddr ptStart)))
& Q! d r% z* s4 A - (command "union" "l" e "")( c7 U( r, r E$ w* y V8 G* i
- )
' s' V6 `- t8 p; { - )/ p/ n5 `: u% l
- " d$ j! U, \/ P" n0 X2 h
- (command "slice" "l" "" "zx" pttmp11 pttmp12)
7 z6 a5 {5 ~# { ? X - (command "slice" "l" "" "zx" pttmp12 pttmp11): S3 F) v. z9 C4 E g+ T* R/ g
- (command "move" "l" "" ptStart (list (car ptStart) (- (cadr ptStart) threadpitch) (caddr ptStart))) 6 ?: f$ C5 f' |- S2 U' N- d
- 1 I, q) Y5 | o
- ; 创建最小直径的圆柱体，然后与螺旋作交集9 I& s; h- Y/ e, v! @
- (setq e (entlast))) P9 V+ G% Q1 T& r7 G& p2 V1 @
- (command "cylinder" ptStart "d" radinner "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart)))# u( X; s; S2 e5 Z$ e5 g
- (command "union" "l" e "")
3 v6 J" k, p; x - (setq tstmp (entlast))( \2 p9 I- i! d; x3 F
. O: H* Y4 C. H% C5 ?8 V- ; 创建中空的圆柱体
5 ?3 Z; A2 M) D; o3 ^% f3 T - (command "cylinder" ptStart "d" radmid "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart))) ; minor dia% m& m' e2 {. I& q9 G1 d
- (setq e (entlast))
0 i$ A! A: S& t; ^$ r: V - ' A5 M0 x# q9 k& G4 N
- ; 若最后创建45度的圆锥) i, V. Q6 C) A
- (if (/= endcone "order")
$ r% |# e5 ]$ H6 r - (progn (command "move" "l" "" ptStart (list (car ptStart) (- (cadr ptStart) (/ (- radmid radinner) 2)) (caddr ptStart))) 9 w) C2 g5 w" N/ J5 V+ I3 R
- (command "cone" ptStart "d" radmid "a" (list (car ptStart) (+ (cadr ptStart) (/ radmid 2)) (caddr ptStart)))
) Z7 w0 h& Y3 I9 L - (command "move" "l" "" ptStart (list (car ptStart) (- (+ (cadr ptStart) (abs threadlength)) (/ (- radmid radinner) 2)) (caddr ptStart))); C1 ?0 P! x3 A3 ?( }! ^
- (command "union" "l" e "")
* }0 `/ b( t8 L2 Y - (setq e (entlast))
7 u! ]" [5 \9 G- P# H+ G - )- S- `; _1 n. [/ Q
- )
% e6 w4 D |: _6 V - 5 Y2 [5 k: n/ |9 |. B! `
- ; 从大圆柱中减去小直径圆柱! S) W/ T! K" t7 |8 f$ A
- (command "cylinder" ptStart "d" (* radmid 1.5) "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart)))
8 _9 q. ?& R3 }( a7 R - (command "subtract" "l" "" e "")
* M: _8 G, M7 a& w# C3 A - (setq e (entlast))
( o/ G9 ]( {7 p7 k2 M
! i4 h; u/ v& G- ; 从螺旋中减去圆柱
7 k! Z' X7 M+ ], `' q - (command "subtract" tstmp "" e "")/ q) U. ?/ f; Z; p3 a! o) e
- 9 a3 |9 H' e. Q
- ; 如果螺旋长度为负然后镜像- K6 k4 b8 c; Y. W
- (setq e (entlast))
3 P! f7 X3 d6 S# Q" D - (if (< threadlength 0) (mirror3d e "zx" ptStart "y"))+ a V+ p" x# K2 ?: j8 i
- 3 G' V( b! L& l
- (command "zoom" "p")8 N" N% k! Y( f% P
- ; (command "undo" "end") ; 结束undo步骤
- c4 q6 n4 l; ~' w! Y. D - )
0 F, g0 W4 p$ `! K. Y) j% S, P: [
( X2 L2 @2 b5 E% S4 T- ;;;---------------------------------------------------------------------------------------------------------------------;
2 u) _% S& H# E - (arxload "geom3d" nil)7 R$ _) r, D6 C1 e) ~
- (princ "
7 r. f2 \8 h( Z6 \9 C4 N3 O - 3DThread 已加载。 "): ^9 [$ R3 C6 p& c# l* C
- (princ)
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9 G7 f0 O5 {0 H. X/ e* m S
0 d' N: u6 Z3 P( y* T三、弹簧源程序
: U, n F; |& A- (defun errMsg (s) ; 当命令执行时出现错误
- m/ N1 E3 i% [* ]/ c. W1 ]# K - ; 例如用户按下了CTRL + C7 b2 l0 Q% g5 `1 v1 x6 g
- (if (/= s "Function cancelled")
- X4 u! }4 k9 k0 H - (princ (strcat "" B2 ?* z9 M H. L, F: ?& _
- Error: " s))
) N+ U8 B" C( m- x2 h/ v - )
5 A" U' k% z8 X7 U - (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值
1 ^. T2 u5 v4 A7 I; g. C - (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值: s6 y9 q& L- l& Q# P
- (setq *error* olderror) ; 恢复旧的错误处理
8 k ]8 D# u+ s0 x3 t - (princ)
" {4 t- U$ E* [! O - )
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- (defun spring (nRepeat cntPoint bhfac lr strad bvfac2 O1 s; Y+ x6 ^, q
- / angle distnc tp aGrw dhGrw dvGrw Pi2 dv)
7 J- o: X: E! l4 t, w* D - $ M3 Q! A. d7 E% O' r7 ]6 Q( T
- (setvar "blipmode" 0) ; 关闭 blipmode - m+ X! X0 C: e6 G7 S: m5 g- R
- (setvar "cmdecho" 0) ; 关闭 cmdecho
; q- E l: p! D! z - (setq Pi2 (* 3.14159265 2))' x; O* Z& F$ J( e& r
- (setq aGrw (/ Pi2 lr))' ?. t8 @2 f( Y0 K r+ i+ o3 ^
- (setq dhGrw (/ bhfac lr))2 b2 y# u/ b0 K5 c ^4 O, ^2 b- J( ?
- (if bvfac (setq dvGrw (/ bvfac lr)))7 P8 X; u) m$ V5 B0 w8 e6 b
- (setq angle 0.0)
0 J1 d$ p& g/ n0 a. O+ Y - (if bvfac
) X" k* n3 ~2 y3 v# k3 l! M - (setq distnc strad dv 0.0). S, y9 M# I; l7 K' y! g
- (setq distnc 0.0)
9 [9 ?) A5 d4 g: r4 G - )( |4 u% [* N# N, l! w4 c: ^
- (if bvfac
4 |0 p0 s! r8 X4 _+ K - (command "3dpoly") ; 开始绘制弹簧
6 j$ w3 g' k9 Y: I; {. } - (command "pline" cntPoint) ; 从基点开始绘制弹簧* P, p O) J, J% w4 g9 C# S3 P
- )( X$ S) s) q: O1 T
- (repeat nRepeat
2 J8 B r ^& s; y - (repeat lr
# M8 r) B. B# W* m3 X5 _0 [" z$ i - (setq tp (polar cntPoint (setq angle (+ angle aGrw))* {4 L) p4 c% G& U7 ]$ x
- (setq distnc (+ distnc dhGrw))
8 J/ e S8 |. t7 y# | - )3 O: Y! `2 R5 ]7 v
- )1 Q( u0 \: Y9 `* D7 u, `% _# i
- (if bvfac
! t0 y% c& \; a - (setq tp (list (car tp) (cadr tp) (+ dv (caddr tp)))" Y# a9 u) Q+ ]1 w% ^* l7 O2 k
- dv (+ dv dvGrw)+ h8 l8 X5 z' B7 U. u( e
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- )
, d$ Y* _) d/ ~7 O - (command tp) ; 继续输入下一点0 u! C0 c1 p; @, g7 v
- )
% Z! x# l* z+ w, A r+ D% | - )
' m7 v! s* f% N9 R - (command "") ; 输入结束
7 ]; D- y6 A2 x; v - (princ)5 p5 x: S9 `7 \- |: d2 i) z# O
- )
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. p1 O1 w& p2 W5 }- ;;;
5 B2 b/ m/ R/ B# f - ;;; 生成三维弹簧函数调用接口
7 O1 y1 O& P) m) b0 g - ;;;5 f" d0 b& E6 G% ~2 H) d9 M, m) F6 q
2 [9 p! }0 q( V$ T/ S- (defun C:3DSPRING (/ olderror cmdch blpmd cntPt RottCnt horiGrw vertGrw bgnRdtn ptCntPerCircle)
' W$ W$ B4 S) d3 v - (setq cmdch (getvar "cmdecho")) ; 获取cmdecho值，以便调用结束后恢复7 Q D w0 ^( [5 m
- (setq blpmd (getvar "blipmode")) ; 获取blipmode值，以便调用结束后恢复
S' h4 \2 S/ d% @# @9 s) v# _" S - (setvar "cmdecho" 0) ; 关闭 cmdecho " {- R8 b/ _5 d) s/ [
- (initget 1) ; cntPt 必须非空 ^! x G2 F. t& z, K5 ^/ _( @
- (setq cntPt (getpoint "; D3 F9 N& r- A0 }" N6 V
- 请输入底部中心点: "))( e& i6 p7 u7 \. W
- (initget 7) ; RottCnt 必须非零、非空,不可忽略
0 M& ]: m6 @6 l [+ i5 m - (setq RottCnt (getint "" N$ k2 `9 M, [( I/ S
- 旋转的圈数: "))$ l( H0 q0 n0 U0 E8 H2 }
- (initget 7) ; bgnRdtn 必须非零、非空,不可忽略- ]& g R6 g6 R8 m, v& [
- (setq bgnRdtn (getdist cntPt "
" Z0 Y% K( ~/ l; a, R - 起始半径: "))* G6 a. A/ [: {- m0 v
- (initget 1) ; cf 必须非零、非空
, s. A5 o" ]; {8 J# l. p* x - (setq horiGrw (getdist "2 r. P% ~1 I. w
- 每一圈的水平增长距离: "))% \% l: M. L3 y" ?; d
- (initget 3) ; cf 必须非零、非空% L% ~! O* m* m! J
- (setq vertGrw (getdist "! c" C7 w0 a/ I; \% W
- 每一圈的垂直增长距离: "))
/ |5 d8 d, e2 ^ - (initget 6) ; ptCntPerCircle 必须非零、不可忽略+ F/ ?) U. [# G7 I. ]7 X1 y
- (setq ptCntPerCircle (getint "! h8 W3 I) }% P+ P# _5 M
- 每一圈的插值点数<35>: "))
6 W5 Q7 G+ G" ]5 K! [7 Q4 A1 K - (cond ((null ptCntPerCircle) (setq ptCntPerCircle 35)))
9 m B/ Z* l8 O7 a5 Z+ V - (spring RottCnt cntPt horiGrw ptCntPerCircle bgnRdtn vertGrw)
) N N5 U/ l0 h0 y% t- ? - (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值4 i W5 s' S0 k- ^
- (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值
, c. F6 ?+ `0 w, G7 ~ - (setq *error* olderror) ; Restore old *error* handler
' w1 h5 ?: `; Y$ O - (princ)
`/ N0 v- p( q( K0 N- b - $ N) F. l: e4 ^4 Q7 @- ]) x8 J
- )
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发表于 2006-4-14 13:10
发表于 2006-5-5 10:43
