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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$ \, |# p- o, @" @5 I3 Z$ v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：
. d) ?3 I: k1 d7 T, {* g, M一、齿轮轮齿渐开渐开线) }' h. v8 p0 S5 g
- + V$ m- | X- E$ h; `: p
- (defun c:gear(/)
% B# v5 d3 ~& p! G - (
+ ?" @4 ?+ r" K# {! ~* N! d' D7 U - setq) N. Z! ^, L" j# `. \; z
- p0 (getpoint"输入齿轮中心p0: ")
6 ^+ Z# V8 {8 g( G7 c7 [! l+ V - m (getreal"输入齿轮模数M: ")9 v2 y1 s* M6 |; J/ s7 w
- z (getint"输入齿轮齿数Z: ")6 X- U/ L9 C* u! }$ `) Y
- ha 12 Y* _2 o7 [/ F, ^
- c 0.25
6 j5 v$ _. x- ]% h( o7 y1 a - a (/ pi 9)
# F( p( x3 q& z - ra(/ (* (+ z (+ ha ha)) m) 2)
4 R7 c T8 A; l. ] - rf(/ (* (- z (+ (+ ha ha) c)) m) 2)
% r% F" ]% J6 E3 h/ s6 ^! n - r(/ ( * m z) 2)! m; t) K- |# z0 {
- rb ( * r (cos a))
, f' f: u& r" m: l5 p - ri rb' q/ c+ w6 j3 Q/ b- ]' }& g
- ang 0
8 @: e! [ m7 W$ I5 i1 z1 W( W - g (polar p0 ang rb)# Q. H7 e9 R3 _( X6 m0 N+ I' v
- )
/ }5 \' s/ Y, k! E6 D9 I+ l4 U - (command "circle" p0 ra)
5 G/ Q/ G' _' g3 K9 L- U: {) B - (command "circle" p0 rf)' u6 X6 m% B/ T9 S; ^( u# S
- (command "circle" p0 r)
6 y6 j9 l$ w, ]# q! u - (command "line" g)
6 f9 T% Y; l0 `% T$ t4 ? - + _. {& \4 F; N$ h. A+ W
- (while (< ri ra)+ P. J4 o! y8 b" ^ P: t+ p: T5 ?
- (setq
- @6 L- q b. [" ?0 w- A7 _ - ang ( + ang(/ pi 360))
0 }# w& b) g+ ~8 F; X - ri ( / rb (cos ang))
8 [( n4 o1 U1 M9 U7 Y - cta ( - (/ (sin ang) (cos ang)) ang)8 P- y y; d( T X5 j" x
- g(polar p0 cta ri)
4 w1 x- m2 ?3 N7 C$ r - )+ X5 @) J8 B. D
- 5 A9 F9 L5 m) X% F' t
- (command g)
& ]- g$ P/ h; X5 T+ c - )7 I/ m9 F) i" P6 @) V
- (command )
3 H- E" ^0 B; ^3 q( u - )3 ` T7 K! g9 Q& a3 W
3 t' {" P! |/ d6 k8 Q1 E1 m v$ ^( Q5 `1 w* X6 k9 \( R& }
' G/ Y \# {- }6 U( o二、螺旋源程序' b+ ~9 }5 {! ]. D' j
0 f# E/ H- w2 q7 u. s9 Q/ w& F# q- Y
- (defun errMsg (s); g# X) Q8 p5 r
- (if (/= s "function cancelled") (princ (strcat "
" u5 A9 l9 K; g" Y3 b+ U( U - Error: " s)))6 X* N1 B) o+ G5 u
- ; 当命令执行时出现错误3 K1 M2 f2 J! h. o8 A
- (setvar "cmdecho" ocmdold) ; 例如用户按下了CTRL + C& {% L; A& f) u7 P2 e( z% F7 G, }2 X
- (setvar "osmode" osmold)
9 M: g8 P9 C8 C% G6 i. t0 [2 t8 h - (setq *error* olderr) ; 恢复旧的错误处理' P/ _" C9 _) p' }4 v( u7 k
- (princ)3 V0 P/ e0 B# }0 p& {& L Q
- )6 K1 j$ q9 l7 _
/ ]6 ^' ~2 E% I$ a2 R$ E* h- (defun c:3Dthread (/ radouter threadpitch threadlength threadangle
7 l: v+ H8 `: f9 v7 [ - ptStart innerdiafactor radmid radinner ocmdold osmold 4H 5H 6H h6 g6)8 B+ e. N$ Y' \7 w* U
- ;-------------------------------------------------------------------
7 L+ }! G6 f. L& G9 D( f - ; 获取公制外径大小、螺距总长" b$ ?0 S* @ _/ L
- ; 然后计算一系列几何点% a1 d( [8 P% h+ P8 C) X
- ; 并且关闭对象捕捉、命令回显# b" M& ]- y# X# |2 ] W
- ;-------------------------------------------------------------------6 M! }& J, e4 Q! C0 U7 X% Y
- (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))
E. F& W& q( w" ?# T' _' J( T - (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))
1 B0 K8 H! f4 p5 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)) ! M5 B r1 ^1 `2 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))
+ N9 ~- p; D- ~5 j8 P* R0 ? - (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 n$ Y+ ^2 w3 f' k0 A
" T1 }7 i/ S8 _# Q% r5 W- (setq osmold (getvar "osmode")) ; 保存调用前的osmode系统变量值
' M; O& D- l6 ?; S - (setq ocmdold (getvar "cmdecho")) ; 保存调用前的cmdecho系统变量值6 M+ A9 Q9 i" y6 ]) ]4 |" x* e
- (setvar "osmode" 0) ; 关闭对象捕捉 2 k. E2 o* k, i' z; i/ Q
- (setvar "cmdecho" 0) ; 关闭命令的回显
0 o4 Y, E9 P; J4 V0 E
7 E4 b, g( V: K! @, s7 t- (setq innerdiafactor 1.5) ; 设置内径系数
, u7 W+ R7 c( M5 g7 ?8 } - (initget 7) ; radmid 必须非零、非空、非负! z; k4 h- i5 A i" r) z4 N& u
- (setq radmid (getdist "
" d; I2 k* a* G/ v# @. g, E* ~- ? - 公制外径: "))
2 k: o! h) N( z: n, l - (initget 7) ; threadpitch 必须非零、非空、非负7 o( E; T) e( V9 k5 }
- (setq threadpitch (getreal "' q K; ?2 o6 h* d8 [
- 螺距: "))* K2 T9 Y; k v( ], |' O
- (initget 1) ; ptStart 必须非空
' ?& l2 Q4 Y# n - (setq ptStart (getpoint "
8 W5 J* F/ B$ c$ F$ C. d - 起始点: "))' l9 p! _; h' s
- (initget 3) ; threadlength 必须非零、非空、非负* C0 L2 h# S$ y" s+ D! f; W" c
- (setq threadlength (getdist "4 v* A2 `) ~/ ^7 w) C
- 螺纹总长(Y方向): ")); j% t% H. {0 o
- & A! ~ N8 G( `9 O. I# c
- ; 对公制外径添加公差/ X% E- k; R" n! o6 M" y
- (if (<= radmid 3) (setq order 0) ; 根据公制外径确定公差带中位置
, A0 `+ q. a# l6 ]: o8 D6 V, h+ d - (if (<= radmid 6) (setq order 1)+ u$ t K. G+ i! l6 T4 Z
- (if (<= radmid 10) (setq order 2)
1 h! d7 s9 |7 ~ C: p. T$ L - (if (<= radmid 18) (setq order 3)
, r1 ~9 {: g6 i) W3 B2 \# o+ | w - (if (<= radmid 30) (setq order 4)
% o; n0 f! f# O8 o) x, h - (if (<= radmid 50) (setq order 5)( D- d9 L7 E7 \% e9 {
- (if (<= radmid 80) (setq order 6)" _; o% f/ \& U* D
- (if (<= radmid 120) (setq order 7)- V. {* O1 e5 R$ {" Y
- (if (<= radmid 180) (setq order 8)
& C( W. R. H3 A& f" c - (if (<= radmid 250) (setq order 9)1 [/ u H* S; S' h# Z4 n3 `0 V
- (if (<= radmid 315) (setq order 10)0 w+ @, {5 d& J7 r o
- (if (<= radmid 400) (setq order 11); `7 w V! ~# c6 {* J" x: A
- (if (<= radmid 500) (setq order 12)
% F4 d4 _4 \& x$ u# M$ {0 b - )))))))))))))
0 X' F) I, J4 ?( C1 }" a9 o - * `, n' W+ {$ ^2 x
- (if (< threadpitch 0.25) (setq radmid (+ radmid (nth order 4H))) ; 根据螺距确定公差带" Z! x" ~7 P* K2 s
- (if (< threadpitch 0.35) (setq radmid (+ radmid (nth order 5H)))1 r, ~/ ^6 R0 d# W; G) k C
- (if (>= threadpitch 0.35) (setq radmid (+ radmid (nth order 6H)))7 d+ t( C- K Y( X4 U8 i: }$ c
- )))! p$ i) N. F8 }
- 9 D! N8 Z8 k# L1 G" \
- (setq h (* 0.866025 threadpitch)) ; 计算齿高
4 o2 l# t( w2 |7 A6 R: e - (setq radouter (+ radmid (/ h 4))) ; 计算外径
- A( B7 Y8 S. B- U( E - (setq radinner (- radouter (* h innerdiafactor))) ; 计算内径9 _6 c/ Y# O( t- A3 A }
- (setq threadangle (+ 30 0)) ; 计算齿顶角( c* P. ], {- C
- 9 c# L& Q% t6 _* w8 z3 ^
- (auxithread radouter radmid radinner threadpitch threadlength threadangle ptStart) ; 调用绘制三维螺纹的子函数/ P2 v. K+ W+ ?2 D" {: _
1 C: w! d* W6 W- (princ "
, V1 B( M+ R& C- l5 v; Q - 三维螺纹创建完成"): t- V6 P8 k; J* f: J- ` N
- (setvar "osmode" osmold) ; 恢复调用前的osmode系统变量值' }+ i$ O: o8 C
- (setvar "cmdecho" ocmdold) ; 恢复调用前的cmdecho系统变量值
$ O, I. D& I! L- J3 H X) t& B$ d# | - (princ)( l6 j. k0 v$ h3 n
- )$ s+ G0 X' w" Q
- }5 |* V5 n; e! c- (defun auxithread (radouter radmid radinner threadpitch threadlength threadangle ptStart / ttal pt1z ang pt1a
1 e8 b8 i* ^3 y5 Z) D- A k - pt1az pt3a pt1b pt1bz pt3b pttmp1 pttmp2 pttmp3 pttmp4 pttmp5 pttmp6 pttmp7 pttmp8 pttmp9 pttmp10 pttmp11 pttmp12 tstmp startcone endcone)6 @3 {/ s- f, }5 ^
- m% R+ S- l8 w9 l7 {
- ;(command "undo" "begin") ; 开始undo步骤
! ]* s: M2 A$ A# a) B4 \ - $ c# w3 s) S' r8 X% E: y- N+ Z
- (setq ttal (+ (fix (/ (abs threadlength) threadpitch)) 3)
6 [. k4 e7 x+ W4 E/ I9 f5 A6 L - pttmp1 (list (- (car ptStart) (/ radouter 2.0)) (cadr ptStart) (caddr ptStart))6 x6 O4 Z7 U) F# B
- pt1z (list (- (car ptStart) (/ radouter 2.0)) (cadr ptStart) (+ (caddr pttmp1) 1.0))
9 H7 W/ _: q$ s& E+ t0 j - pttmp2 (polar pttmp1 (/ (* threadangle pi) 180.0) 1)- w8 u8 [7 z0 t4 }' U: m, e: U( s. @
- pttmp3 (list (+ (car pttmp1) radouter) (+ (cadr pttmp1) (/ threadpitch 2.0)) (caddr ptStart))
d/ Q( A. p) ?( a( M* } - ang (angle pttmp1 pttmp3)
" n8 X- C& c9 C5 D - pt1a (polar pttmp1 (+ ang (/ pi 2.0)) threadpitch)) K+ q3 W; c$ Z/ v) w
- pt1az (list (car pt1a) (cadr pt1a) (+ (caddr pt1a) 1.0))1 S$ ]0 L8 e% _) B
- pt3a (polar pt1a ang radouter)* X- J4 t; B& w. b: I+ h; B
- pt1b (polar pttmp1 (- ang (/ pi 2.0)) threadpitch); s6 F$ r4 l# F, C: B
- pt1bz (list (car pt1b) (cadr pt1b) (+ (caddr pt1b) 1.0)). Q) t1 V! g( Q$ @7 S4 {" U
- pt3b (polar pt1b ang radouter)
( C, B7 @; K2 I* o! A: S$ A% E - pttmp4 (polar pttmp3 (/ (* (- 180 threadangle) pi) 180.0) 1)
# y1 ^# E$ c; F" `# U3 i( [ - pttmp5 (inters pttmp1 pttmp2 pttmp3 pttmp4 nil)
! I/ I f: E5 Y3 `) o - pttmp6 (list (car pttmp5) (cadr ptStart) (caddr ptStart)): R7 T3 U. X2 T
- pttmp7 (polar pttmp1 (/ (* (- 360 threadangle) pi) 180.0) 1)6 _" p( B7 a4 Z. E
- pttmp8 (polar pttmp3 (/ (* (+ 180 threadangle) pi) 180.0) 1)7 t5 K9 {+ ~* o
- pttmp9 (inters pttmp1 pttmp7 pttmp3 pttmp8 nil)1 R. h" D! Z, @: Y1 h* Q. X
- pttmp10 (list (car pttmp9) (cadr pttmp3) (caddr pttmp3))
/ R; R" @) X" w& T& @/ O3 x, v/ e - pttmp11 (polar ptStart (/ pi 2.0) threadpitch)
& Q: Z! i# ~' k" w; Z - pttmp12 (polar pttmp11 (/ pi 2.0) (abs threadlength))
/ \; p5 B! e+ R- @$ s! f- D - )# n4 n3 u5 u9 P. r1 c: ?/ }
# G9 {. g! {9 v- ;-------------------------------------------------------------------8 Q& |* F% H# [: F! L- q. M7 f- q" y
- ; 绘制两个倒置的并偏移1/2螺距的圆锥
! v. u0 X6 A% {4 q7 Z3 L - ; 这两个圆锥都以中剖面剖分# v/ e% m/ O8 S
- ; 进行并集运算* N' w. h. O1 W* T- q
- ;-------------------------------------------------------------------' W4 {! Q! a u3 N. g% I
- 5 r& }$ B: A! M9 H; } n& L0 ^
- (SETQ startcone "order")4 i, C3 K! V4 \: @+ v
- (SETQ endcone "Y")0 |% r" }" M3 C! n+ \; N1 W
- (command "zoom" "w" (list (car pt1a) (+ (cadr pt1a) (abs threadlength)) (caddr pt1a)) pt3b)
* T/ c: a5 h( c& I4 a - $ i/ ]) o* p7 w6 r
- (princ "
5 {1 _ b/ s0 i) S* ?1 d& a - 正在绘制三维螺纹，请等待")# b8 G3 k' Q0 I9 I" e" G4 o
- (command "pline" pttmp1 pttmp5 pttmp6 "c")
, N% Q/ _) ]. |1 c& G4 A - (command "revolve" "l" "" pttmp5 pttmp6 "")
, [- {7 r* g {. h- y" y' T - (command "slice" "l" "" pttmp1 pttmp3 pt1z pttmp5)" u$ U( C) a+ c
- (command "slice" "l" "" pt1a pt3a pt1az pttmp3)9 m: I, ~+ @. d+ K& e5 G
- (setq tstmp (ssadd (entlast)))/ @ t- J) C. m8 e. ^: w' d9 j
- (command "pline" pttmp3 pttmp9 pttmp10 "c")( y; u7 s1 K5 [5 K' j$ M) O
- (command "revolve" "l" "" pttmp9 pttmp10 "")
% x8 M! P& o, @( e+ F7 R4 g3 r - (command "slice" "l" "" pttmp1 pttmp3 pt1z pttmp9)) X& t6 Y( ?) n/ \
- (command "slice" "l" "" pt1b pt3b pt1bz pttmp3)
2 s" |* {, T& a5 V( t( i - (setq tstmp (ssadd (entlast) tstmp))
- w* z: t; J- B3 o6 F; [ - (command "union" tstmp "")
" k G" X% y/ _% M+ v
) {$ m b7 i/ I. D2 C; l# r- ;-------------------------------------------------------------------
1 L* m* G9 R( M3 h! M% H: H4 n! H' Y - ; 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: S; h# G: w! h' ~- P0 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
, I9 _" ^! f% U- m# Q# E; \8 ^% | - ; 在最后一步被切除6 |/ \' d: ?/ B6 h- H
- ;-------------------------------------------------------------------
+ d- C% i3 G. j9 s: ~* X, B - - L. T' C9 I7 o# j
- (command "slice" tstmp "" "xy" ptStart "b")
9 x' m; l% W- W5 G, I9 A$ c8 e - (setq tstmp (ssadd (entlast) tstmp))) `; U2 I4 R& J) A% C" j
- (command "mirror" "l" "" pttmp1 "@10<0" "y"): _3 I W6 a* l" y1 L% Y
- (command "union" tstmp "")
9 S! ]9 E" ^# }& Q# n
: Y8 x. P. V. b5 I# \. Z- ;-------------------------------------------------------------------
# H/ q( }6 t! y4 k; ~' M - ; 螺旋进行阵列操作，然后再作并集（可能会耗费一定时间）
3 K% E( E: Q7 c4 @" u# [# | - ; 得到的实体再切除到指定的螺旋高度1 i" N' u) J8 t6 ]/ R6 K
- ;-------------------------------------------------------------------$ _7 O# [) z3 Z2 v6 j" [
- ) H B9 a; a/ A& q3 G
- (setq e (entlast))! z1 a/ z/ o7 q# w
- (command "array" tstmp "" "r" ttal 1 threadpitch)
9 m! ~1 r1 ]7 s6 p: I* t5 e - (repeat (1- ttal)
& X% b4 |+ X+ X5 X8 I% J2 x) ?8 C - (setq e (entnext e)
) E/ J6 S/ w* Q - tstmp (ssadd e tstmp)
7 F4 I+ i7 \2 [% m# p/ M - )' c6 w3 k- V3 o/ `3 E
- ): u) q# C. k L3 q ~4 X& z8 r5 f9 n4 w
- (command "union" tstmp "")
4 F. t0 c' z& r+ z$ m5 s4 p' _
6 u; ]( y- R: ^$ u' P( \9 H- ; 若开始创建45度的圆锥
+ y/ T$ k+ h% Z+ N - (if (/= startcone "order")5 J' Z, F3 Z# P6 L0 \/ x' s
- (progn (setq e (entlast))
1 a2 l: Y5 j4 [ - (command "cone" (list (car ptStart) (+ (cadr ptStart) threadpitch) (caddr ptStart)) "d" radmid "a" (list (car ptStart) (+ (+ (cadr ptStart) (/ radmid 2)) threadpitch) (caddr ptStart)))
z. w/ z# s2 n/ x - (command "union" "l" e ""), u; S/ M u' p( w
- )
; U) T3 c' h' P( T6 u - )- S$ b2 {$ K" V- V; v
- * k! w8 T7 T* b) F3 Z% B7 v& g# }9 `
- (command "slice" "l" "" "zx" pttmp11 pttmp12)
3 F/ U n) ?$ b" g - (command "slice" "l" "" "zx" pttmp12 pttmp11)
; \8 I3 Y; U/ b" L) W( g - (command "move" "l" "" ptStart (list (car ptStart) (- (cadr ptStart) threadpitch) (caddr ptStart)))
( r' @( H- q X. I
' I0 S/ n" X4 j w: F- ; 创建最小直径的圆柱体，然后与螺旋作交集, D0 z) Y2 w; r6 Q( s
- (setq e (entlast)); |. b+ O, ^- `2 b
- (command "cylinder" ptStart "d" radinner "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart)))* ~& N, X( {* B/ q1 ?- N
- (command "union" "l" e "")! Y- L+ W% `/ W" M
- (setq tstmp (entlast))# }" e) F; P4 L6 Q5 Y) l9 z O# E" v; b
9 K4 I' F3 \. C7 R0 E9 d- ; 创建中空的圆柱体
$ S$ ] u# N- ~ { - (command "cylinder" ptStart "d" radmid "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart))) ; minor dia
' w' q4 t. S2 y - (setq e (entlast))
" K6 J. C3 K/ \5 b# B* O - $ _! U5 `( Y3 H0 r, I
- ; 若最后创建45度的圆锥
2 V# `5 P" {7 F8 c7 W6 f2 s5 w - (if (/= endcone "order")
6 U0 Y3 K- A5 A0 U6 P' f, G/ h - (progn (command "move" "l" "" ptStart (list (car ptStart) (- (cadr ptStart) (/ (- radmid radinner) 2)) (caddr ptStart)))
8 q- z3 `! c- e8 K - (command "cone" ptStart "d" radmid "a" (list (car ptStart) (+ (cadr ptStart) (/ radmid 2)) (caddr ptStart))) 2 U6 S; x, M7 v h6 R
- (command "move" "l" "" ptStart (list (car ptStart) (- (+ (cadr ptStart) (abs threadlength)) (/ (- radmid radinner) 2)) (caddr ptStart)))
4 C2 F" l6 l- \7 L - (command "union" "l" e "") 3 z9 e% e. S( l* p5 w
- (setq e (entlast))9 _7 D' r; u2 A$ w% g p0 E
- )3 l: Y( S8 U0 _) H, a
- )
2 v: f. Q& t3 b! ]7 R( l
/ E6 f2 a& m4 O' `! Z/ W; N- ; 从大圆柱中减去小直径圆柱
' k w H" j3 E9 f, e; W - (command "cylinder" ptStart "d" (* radmid 1.5) "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart)))* _$ x7 U: ?1 L, i3 t' P( i' F
- (command "subtract" "l" "" e "")- R6 Z0 a( R# i ?7 R2 t
- (setq e (entlast))+ w6 W" X& @* D0 V
- : X4 ` q h* ^- H( a6 X, S
- ; 从螺旋中减去圆柱
0 L. A* e2 F. w! W0 R; R6 t0 ? - (command "subtract" tstmp "" e "")* `2 j; q6 Y- R1 E7 ?
- . |7 `$ x8 m2 R8 ?# D& |
- ; 如果螺旋长度为负然后镜像# Q: T2 ?3 Y1 B" p0 V
- (setq e (entlast))# U: A# w) t$ v/ Y
- (if (< threadlength 0) (mirror3d e "zx" ptStart "y"))/ P% k1 I0 P7 |; V
- 3 i/ { w) ?! T
- (command "zoom" "p")
+ m# r7 l9 {5 `4 O* z - ; (command "undo" "end") ; 结束undo步骤6 O- X* |# }$ k) g2 d# f6 F
- )& o' Z* E( `6 A% [7 M* ?; j
' l/ e1 I- E+ n5 e8 M- ;;;---------------------------------------------------------------------------------------------------------------------;
7 _$ s( ~) W$ q+ h" ^ - (arxload "geom3d" nil)2 f" z% P/ n; L m
- (princ "
0 a1 H. Y4 h N0 v# l - 3DThread 已加载。 ")
8 J4 X% I6 Q1 K) N# s1 M% z2 u - (princ), B4 R9 R" G5 y/ Y4 r
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三、弹簧源程序
8 Q: m8 Z& y$ V- c& T z7 }- (defun errMsg (s) ; 当命令执行时出现错误 . @: {! ], Q+ ~' p& A
- ; 例如用户按下了CTRL + C
6 N0 u2 r( f. w- ` - (if (/= s "Function cancelled")
& |$ r3 }2 F$ Q8 F - (princ (strcat ") Y) b# m7 \( d& [+ {6 U
- Error: " s))
% `9 V/ `6 o7 t+ ]+ E1 M P2 n - )
5 E( }6 y' \# k& p; D7 Z - (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值8 ?$ Q+ F9 B- z V: L+ \) u5 s
- (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值
8 t7 }4 p2 n8 r: q, H( A# V* J - (setq *error* olderror) ; 恢复旧的错误处理) N8 J* B( f% ?$ C) s, S" J( H
- (princ)8 L6 i( ~3 D% `& V
- )
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7 B( Q& g( p7 I T- (defun spring (nRepeat cntPoint bhfac lr strad bvfac
+ o' H9 D0 i+ G' i9 D' e! X - / angle distnc tp aGrw dhGrw dvGrw Pi2 dv)3 n1 x) n; b. R% H6 l6 L0 f
- 5 {; h5 E# _7 u# i2 H, l* M
- (setvar "blipmode" 0) ; 关闭 blipmode
. Y W8 u; e4 ^" g) U1 _7 J - (setvar "cmdecho" 0) ; 关闭 cmdecho! |! t" G) g7 @; R' n* _$ }% a
- (setq Pi2 (* 3.14159265 2))( y0 @" e! O( T w- N8 q2 N1 l8 h
- (setq aGrw (/ Pi2 lr))
" m& @3 F' L/ T& r6 D6 } - (setq dhGrw (/ bhfac lr))
" `! r* L N! U+ |7 `+ z9 ] - (if bvfac (setq dvGrw (/ bvfac lr)))
, ^- ~4 z' E6 u! O' W9 Q# q8 l) h" u - (setq angle 0.0)
# r3 a6 F! Y, U) L! [8 X9 f: g- L - (if bvfac
& T; R6 M& T' b9 s) Z& j$ C, D - (setq distnc strad dv 0.0); c5 N, A) W% S
- (setq distnc 0.0)
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8 Q" s2 j" _, Q) t( J. `4 J# k - (if bvfac 7 l6 Y$ l7 R& Z
- (command "3dpoly") ; 开始绘制弹簧: x9 B& ~8 @( T* r9 @) M
- (command "pline" cntPoint) ; 从基点开始绘制弹簧
4 d# D; D2 y5 m* J& w - )7 x. r, T1 Z' F; W# s/ d% i
- (repeat nRepeat
0 b* D5 ?; Z- L& f) [6 s - (repeat lr ! d' s" Q/ T. Z/ H4 m
- (setq tp (polar cntPoint (setq angle (+ angle aGrw))
& e9 Z7 O( S2 J. k - (setq distnc (+ distnc dhGrw))
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3 b" j" e; e, c f0 I, i - )" ~* D/ G6 [$ d/ I3 C! M, [
- (if bvfac
/ _% W- p% F% N* d - (setq tp (list (car tp) (cadr tp) (+ dv (caddr tp)))
6 c3 D3 a7 S# z - dv (+ dv dvGrw)4 {5 v6 e7 A9 E' P5 j9 n, l, ]1 v
- )
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9 n* @$ |' k+ h1 k) R) T - (command tp) ; 继续输入下一点
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- (command "") ; 输入结束( N% h1 R. b% Q
- (princ)3 ^; b7 M* [% L( v* `
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) z. J1 P5 I, ?- ;;;
7 u4 s7 J' s. T - ;;; 生成三维弹簧函数调用接口
7 N& i# d( w7 y6 {! O - ;;;
# n5 d3 o3 F! ~ c - % q( A/ e" m$ T6 g) _0 @1 y& d) L* ]
- (defun C:3DSPRING (/ olderror cmdch blpmd cntPt RottCnt horiGrw vertGrw bgnRdtn ptCntPerCircle) 7 m9 h4 W, Y* W; T
- (setq cmdch (getvar "cmdecho")) ; 获取cmdecho值，以便调用结束后恢复0 A( `3 ^- V0 M, f; l P
- (setq blpmd (getvar "blipmode")) ; 获取blipmode值，以便调用结束后恢复1 n% Z# K' u1 c, `! c
- (setvar "cmdecho" 0) ; 关闭 cmdecho
% n2 c, D/ G |: H2 X( m7 M - (initget 1) ; cntPt 必须非空
. Z4 u$ X' c1 l) y - (setq cntPt (getpoint "
: U+ k! g3 W6 {* R( p - 请输入底部中心点: "))
% Z9 W, \; D* [ - (initget 7) ; RottCnt 必须非零、非空,不可忽略) Z$ X( D, V/ |: I9 g
- (setq RottCnt (getint "5 o2 p$ h( S' M& v, g7 [! G
- 旋转的圈数: "))
# ?, z; N0 q5 a P - (initget 7) ; bgnRdtn 必须非零、非空,不可忽略" `2 A& k' g k) y9 m
- (setq bgnRdtn (getdist cntPt "9 ~6 e. e' a* m8 w7 [
- 起始半径: "))
: W) T: P) e4 o" q/ `8 t) b - (initget 1) ; cf 必须非零、非空
9 o; U8 v, i7 L; d" C/ a1 q9 V R1 Z - (setq horiGrw (getdist "
- |: ^' `5 w2 v/ o - 每一圈的水平增长距离: "))
, T# t. ?5 b6 C: Q! ~ - (initget 3) ; cf 必须非零、非空
5 F' y0 T- X! `2 m7 h: F$ h! Q! M5 Y - (setq vertGrw (getdist "
2 T; B" O! P/ S' k - 每一圈的垂直增长距离: ")). F" ]2 @, q. M5 y$ U9 c5 w
- (initget 6) ; ptCntPerCircle 必须非零、不可忽略
9 B. D7 Z' Y0 r2 j - (setq ptCntPerCircle (getint "3 y& L5 W) M* J+ j+ r1 Q5 c3 |, r
- 每一圈的插值点数<35>: "))
% i9 I. M; n1 `/ d* ~! ?. M - (cond ((null ptCntPerCircle) (setq ptCntPerCircle 35)))
2 c1 `) Y2 k8 ~: d+ i8 A* R - (spring RottCnt cntPt horiGrw ptCntPerCircle bgnRdtn vertGrw)
: q2 }8 y" ` g2 D0 s, `4 ?' B - (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值 F1 o" F& [- h/ [
- (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值' N" E0 h3 \5 c2 k9 [
- (setq *error* olderror) ; Restore old *error* handler1 B: h' _: O7 M# t. I( D6 J
- (princ)
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发表于 2006-4-14 13:10
发表于 2006-5-5 10:43
