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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& T: U+ [% d2 ~. o+ E) R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：
8 h! U6 I% G3 N$ {一、齿轮轮齿渐开渐开线7 D# S+ f: I( A; n( u( m4 N0 \
- * D" u: G O$ W- p% i0 W) A9 x
- (defun c:gear(/)6 ~: g- X3 o, p) l Z$ L. {
- (+ x+ x" A* z, ^3 m) s- H
- setq
1 ~6 g. g$ U2 }- n: k: D5 r - p0 (getpoint"输入齿轮中心p0: ")
9 X2 V8 t6 {3 k% d5 S; ]6 D - m (getreal"输入齿轮模数M: ")' g1 I* X2 T) i, c6 d- k
- z (getint"输入齿轮齿数Z: ")
) }$ l* V3 T- Y2 L* i- T9 M - ha 16 V' s4 h: T; f _8 R
- c 0.251 G" @5 a' [1 V* Y
- a (/ pi 9)8 ~6 }4 t) `2 `/ Z
- ra(/ (* (+ z (+ ha ha)) m) 2)
$ d9 C% ?5 X- P* a# B# L - rf(/ (* (- z (+ (+ ha ha) c)) m) 2)2 n u$ X! u7 C: D) C: M* n5 M
- r(/ ( * m z) 2)
$ ?5 Z( W1 ]7 s4 U - rb ( * r (cos a))* s1 M @: O; R4 F% r2 M2 a
- ri rb: {2 r' A+ g. k0 w, _+ a: [. D
- ang 0! }$ o* I3 P" r
- g (polar p0 ang rb)
: g- s* ]( ^ v% O3 d( c( ` - )/ j( d6 L& F7 L1 e. e& n9 s1 G
- (command "circle" p0 ra); \/ G9 A( B5 F) X1 m: y. _
- (command "circle" p0 rf)1 {" _3 r6 P" V+ M' D! W. Y* O
- (command "circle" p0 r)
9 d {3 ^; k% D, R- h& B, ~ - (command "line" g)0 Z: Z2 A5 l2 M* b' U2 G- m0 n4 @0 ]
-
5 i& G7 i$ i/ I/ |8 k - (while (< ri ra)
! K" i9 r( m: H& h, F9 Y - (setq- _: A: s( ^9 f% g
- ang ( + ang(/ pi 360))
* U6 f9 z9 F0 w& h7 D: o6 R - ri ( / rb (cos ang))( q: U# F7 h7 m9 P+ y6 f3 v9 X
- cta ( - (/ (sin ang) (cos ang)) ang)
" [, t! ^; e9 O( F - g(polar p0 cta ri)% w" S# U# v" F0 F8 M b
- )9 i R R8 m" @: u' \/ {4 S
, v5 o5 s" P- e+ w' p. Z- (command g)
& u7 F5 d; ~8 a: V( t - )- g7 h1 Y8 h) o# y
- (command )
$ D" t1 X2 ^. G! R4 D, s - )
' W- V- \, C; h9 g: U
+ ?. ?8 r+ W/ ~3 |$ V+ A& ?# N
2 V8 C4 v$ w2 b3 H! D' F0 b7 H; v7 g) D% @- ^
二、螺旋源程序9 i% v; b. j) C- B* l. i- D
- W: u1 m" u3 U, z% ?5 X8 t) S
- (defun errMsg (s)
) R) I* Z/ t8 p- p0 m% x. x - (if (/= s "function cancelled") (princ (strcat "" E; F; W: B. Z, O; L1 D8 E- U% W
- Error: " s)))
5 |7 C$ j3 E1 I" P$ M- J [/ [- _ - ; 当命令执行时出现错误5 ]% M2 S( P6 j+ Z
- (setvar "cmdecho" ocmdold) ; 例如用户按下了CTRL + C
' [/ a t. T+ L# a" f8 m3 X - (setvar "osmode" osmold)
: I+ ?: Y4 ^$ \ - (setq *error* olderr) ; 恢复旧的错误处理
4 v8 k- X- [6 @ - (princ)
, _% J' q1 i- Z - ): X1 i4 a7 v5 f! X. ~) B3 r7 k
9 S( E" l* O$ C2 @3 O5 ~. z2 R- (defun c:3Dthread (/ radouter threadpitch threadlength threadangle
$ j+ m% K1 U& [0 A7 o7 N - ptStart innerdiafactor radmid radinner ocmdold osmold 4H 5H 6H h6 g6)7 D/ n( I( u2 X" B5 x5 Z% `
- ;-------------------------------------------------------------------$ F' a+ l. W: l
- ; 获取公制外径大小、螺距总长$ r' O3 B1 g( b( Q; I
- ; 然后计算一系列几何点% t8 u8 {- B9 s7 J0 G
- ; 并且关闭对象捕捉、命令回显2 c" a+ H# |4 S v+ j, w
- ;-------------------------------------------------------------------$ N" |2 U" H T& l% K$ j
- (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)) # l& r+ h7 b5 T& f: e9 d: X
- (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)) / ?0 z* X2 k) a7 g+ m: o6 a* ?
- (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)) " P* e% C1 \3 p, c0 h8 o
- (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))
7 V. {% X7 P& y8 { - (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))
' `: T# `2 p% d% r; x - " }* Q3 z/ z V0 O. n
- (setq osmold (getvar "osmode")) ; 保存调用前的osmode系统变量值
: b$ |( A/ ^6 v4 C. ` V: Z - (setq ocmdold (getvar "cmdecho")) ; 保存调用前的cmdecho系统变量值& y" A) {: P6 S; A
- (setvar "osmode" 0) ; 关闭对象捕捉
: T8 O, q0 }- M5 M9 b e - (setvar "cmdecho" 0) ; 关闭命令的回显
}6 S) | L0 v/ t- \" y7 l: O
! q1 R4 W; E2 ^- E- (setq innerdiafactor 1.5) ; 设置内径系数
3 o& I1 _, M6 b: W - (initget 7) ; radmid 必须非零、非空、非负6 D; K B6 P7 _% m, i. o/ z
- (setq radmid (getdist "
$ Q4 F, Z$ ^! z7 B" z7 ~ - 公制外径: "))7 p3 O- ^* @! m* k g- O! ~5 J+ a1 b: d
- (initget 7) ; threadpitch 必须非零、非空、非负/ X/ k% x+ q! @ ? o
- (setq threadpitch (getreal "# ]1 i5 L2 @, g v) n5 [
- 螺距: "))" G2 H z0 i1 M. B; L( |( d
- (initget 1) ; ptStart 必须非空) i1 h6 c9 J/ m* k" `; b5 f
- (setq ptStart (getpoint "
% o4 U2 S: }3 ^, K" i! ?# } - 起始点: "))
" O# |+ V0 {, X$ x. E - (initget 3) ; threadlength 必须非零、非空、非负7 f9 s% j/ M1 T' W, R1 J. J+ B
- (setq threadlength (getdist ": J* t+ r1 y4 N% N6 E2 X
- 螺纹总长(Y方向): "))( b$ O2 ?) H! B1 S, h
4 i6 [5 _7 A4 A9 k1 H* @1 R- ; 对公制外径添加公差& c: U' r4 g1 m
- (if (<= radmid 3) (setq order 0) ; 根据公制外径确定公差带中位置
! ~: t% D, g( {+ s - (if (<= radmid 6) (setq order 1), z$ X/ o, m+ b
- (if (<= radmid 10) (setq order 2)& h" w% H5 @; y. ?# Z- W" l$ m
- (if (<= radmid 18) (setq order 3)3 I* @/ L- r' E. v* E! Q/ }, B
- (if (<= radmid 30) (setq order 4)& r; M4 I5 z/ Y6 R i' l- {
- (if (<= radmid 50) (setq order 5)
- e0 g9 r" ^1 |+ B& U* G - (if (<= radmid 80) (setq order 6)1 O6 ~1 o5 s5 w% C$ R# d5 g
- (if (<= radmid 120) (setq order 7)' t. c2 O- e! F: l
- (if (<= radmid 180) (setq order 8)0 `% b6 w6 ?4 Y* L) F; y
- (if (<= radmid 250) (setq order 9)
; X- T$ z, _& g2 d - (if (<= radmid 315) (setq order 10)+ F3 W `" `) X; X1 U2 a. r0 k2 w
- (if (<= radmid 400) (setq order 11)
4 U O. |) b9 H( H5 x - (if (<= radmid 500) (setq order 12)
- h2 q: z/ w5 S2 a - )))))))))))))* p t3 k8 P$ R6 i& i" d
- , b. ~& v+ j. b
- (if (< threadpitch 0.25) (setq radmid (+ radmid (nth order 4H))) ; 根据螺距确定公差带
/ E. N2 Z1 o# v T) D - (if (< threadpitch 0.35) (setq radmid (+ radmid (nth order 5H)))
f" Z3 o( {& @- t9 e) }+ I. u+ H - (if (>= threadpitch 0.35) (setq radmid (+ radmid (nth order 6H))) j: ^/ ~# W9 `6 Q7 @
- )))# H: W5 U5 ` N+ y6 b: }7 T* v; D
-
( w5 V" F+ Q3 q' n8 u" s9 M( i - (setq h (* 0.866025 threadpitch)) ; 计算齿高0 ?; S3 ~4 K$ c
- (setq radouter (+ radmid (/ h 4))) ; 计算外径
6 `/ V- m9 _0 Y' L" j - (setq radinner (- radouter (* h innerdiafactor))) ; 计算内径
7 T5 `: X& t! K1 W! S$ { - (setq threadangle (+ 30 0)) ; 计算齿顶角
( V' ]8 U( v, M4 G: c' g- b* B4 G - & x& [+ P' v9 ]- l; b
- (auxithread radouter radmid radinner threadpitch threadlength threadangle ptStart) ; 调用绘制三维螺纹的子函数9 t+ s0 Y( b9 H
& S) N, X6 v+ }& g+ F4 z- (princ "
3 }7 `. }( }. C# p - 三维螺纹创建完成")
$ `$ B. E% K5 Q6 A# u5 P - (setvar "osmode" osmold) ; 恢复调用前的osmode系统变量值
$ {. x3 N$ E5 \3 L2 A - (setvar "cmdecho" ocmdold) ; 恢复调用前的cmdecho系统变量值9 J, B# z3 c* q1 @ f2 {/ A
- (princ)! m* T# J/ i" d
- )6 z' n, t6 a5 j7 W6 h
- $ `2 ]9 G6 G% l9 o5 h! x0 l
- (defun auxithread (radouter radmid radinner threadpitch threadlength threadangle ptStart / ttal pt1z ang pt1a
' z; p1 p/ r% j5 z b6 L" X - pt1az pt3a pt1b pt1bz pt3b pttmp1 pttmp2 pttmp3 pttmp4 pttmp5 pttmp6 pttmp7 pttmp8 pttmp9 pttmp10 pttmp11 pttmp12 tstmp startcone endcone)
?5 d7 m" K; ?! }5 u - 2 L1 ?+ \) h( m9 Z
- ;(command "undo" "begin") ; 开始undo步骤 y. O" K0 L T' U$ c; z: N' U. {
* j' l4 }8 R& Y+ w5 Q- (setq ttal (+ (fix (/ (abs threadlength) threadpitch)) 3)% k5 [% \7 X% [! ?5 }1 x9 v
- pttmp1 (list (- (car ptStart) (/ radouter 2.0)) (cadr ptStart) (caddr ptStart))
, ^6 U+ u0 U, L; J - pt1z (list (- (car ptStart) (/ radouter 2.0)) (cadr ptStart) (+ (caddr pttmp1) 1.0))
2 R. v2 g9 F$ ?0 s2 b! q7 h - pttmp2 (polar pttmp1 (/ (* threadangle pi) 180.0) 1)
6 v9 \9 n9 X3 c& p8 s1 f - pttmp3 (list (+ (car pttmp1) radouter) (+ (cadr pttmp1) (/ threadpitch 2.0)) (caddr ptStart))/ E; f) W8 j( U( r" I% M7 }
- ang (angle pttmp1 pttmp3), X! a4 n+ R, ?# X }& A# Q0 U. g
- pt1a (polar pttmp1 (+ ang (/ pi 2.0)) threadpitch)
% \! F: P$ C! v3 A5 Q! l. @ - pt1az (list (car pt1a) (cadr pt1a) (+ (caddr pt1a) 1.0))! o$ X$ B) ?+ a2 ~. n- L% \
- pt3a (polar pt1a ang radouter)* j( }$ l: w$ u" b; b: A
- pt1b (polar pttmp1 (- ang (/ pi 2.0)) threadpitch)
! i x' U+ U- F" H3 ^7 o' j - pt1bz (list (car pt1b) (cadr pt1b) (+ (caddr pt1b) 1.0))
- h& n5 j$ ?0 N+ o' h2 J' d1 M - pt3b (polar pt1b ang radouter)/ c/ `: M4 l* E" y) q6 I
- pttmp4 (polar pttmp3 (/ (* (- 180 threadangle) pi) 180.0) 1)
' V$ y1 V9 l( f- f$ h+ V - pttmp5 (inters pttmp1 pttmp2 pttmp3 pttmp4 nil)# l% q* l- g8 O- a; q
- pttmp6 (list (car pttmp5) (cadr ptStart) (caddr ptStart))
! v$ v, Z4 r# r4 P1 ?% K& ?5 E ] - pttmp7 (polar pttmp1 (/ (* (- 360 threadangle) pi) 180.0) 1) I! V7 }# L# u! a' n2 c
- pttmp8 (polar pttmp3 (/ (* (+ 180 threadangle) pi) 180.0) 1)
) R7 ?( J$ Z/ M7 f - pttmp9 (inters pttmp1 pttmp7 pttmp3 pttmp8 nil)
8 V# @; B; ~* q( t; V9 i8 \0 s - pttmp10 (list (car pttmp9) (cadr pttmp3) (caddr pttmp3)) A, r' O, Q7 w2 {) ?
- pttmp11 (polar ptStart (/ pi 2.0) threadpitch)
' I Y) I2 P$ e& @ - pttmp12 (polar pttmp11 (/ pi 2.0) (abs threadlength))0 j$ _) d5 q# y. v% X
- )
n% |! I+ g8 w0 A1 Z' t3 q( g
$ }7 X( G0 j J3 ] A- ;-------------------------------------------------------------------
$ R" W0 q1 M, H3 D% l; t6 d0 B) G - ; 绘制两个倒置的并偏移1/2螺距的圆锥, G0 p( J/ h w' ~( e4 C0 p
- ; 这两个圆锥都以中剖面剖分
& [- M4 g4 l7 u+ [( B7 J& K - ; 进行并集运算! k7 Z, i4 A, m7 F
- ;-------------------------------------------------------------------/ W6 L& c5 V; v# L
* C3 F' K ^5 G, M- (SETQ startcone "order")
' k8 t# c& P: j3 p; X5 X - (SETQ endcone "Y")( n$ o8 S H M* h5 G, F
- (command "zoom" "w" (list (car pt1a) (+ (cadr pt1a) (abs threadlength)) (caddr pt1a)) pt3b)
2 w2 t, {! B& @: \' f) M, [! N' ~) m( Z - ! ?( L0 d; r, H* u' b! y+ f
- (princ "
1 k i ?7 i% I2 h0 `4 u - 正在绘制三维螺纹，请等待"): G6 J6 u! o/ P: r, m# P/ O
- (command "pline" pttmp1 pttmp5 pttmp6 "c")
6 V; X3 p% h ^/ V* D8 H - (command "revolve" "l" "" pttmp5 pttmp6 "")
4 m# F2 r: v: `0 W" a3 I# ^ - (command "slice" "l" "" pttmp1 pttmp3 pt1z pttmp5)
1 |& f, h9 V$ x3 f! g0 M - (command "slice" "l" "" pt1a pt3a pt1az pttmp3): g; b) h0 Y4 x/ G
- (setq tstmp (ssadd (entlast)))0 |0 t# v$ z( S7 @3 b2 d v
- (command "pline" pttmp3 pttmp9 pttmp10 "c")
8 Y* c( d6 |' d - (command "revolve" "l" "" pttmp9 pttmp10 "")9 g3 R# J& E g+ C) m# S1 j
- (command "slice" "l" "" pttmp1 pttmp3 pt1z pttmp9)9 r8 N# L" T" L3 Y! r: G& B
- (command "slice" "l" "" pt1b pt3b pt1bz pttmp3)
' t. i( s3 f5 `* N! R& D - (setq tstmp (ssadd (entlast) tstmp))
( n) |5 }# f; e6 B0 U% r - (command "union" tstmp "")
$ E. K7 \) o/ ]# l9 ^& ^ f3 x - ( l7 U# D4 _+ H0 H& F( K" [
- ;-------------------------------------------------------------------
' J+ M- g4 T5 J3 U5 x. j - ; 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
U$ f; u! ~# k }( a - ; 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
. M- b8 p7 _$ x; n6 E# E `5 D - ; 在最后一步被切除# I) V6 @% g4 I, y; m# |
- ;-------------------------------------------------------------------
+ i$ p# O( B/ O7 e8 }
, s. j" q; {8 B# U2 j" g- D- (command "slice" tstmp "" "xy" ptStart "b")
! N, f1 D+ z2 p+ u+ t - (setq tstmp (ssadd (entlast) tstmp))3 u# Q0 t$ s9 n7 V* m- R
- (command "mirror" "l" "" pttmp1 "@10<0" "y"), { D- d. t: Z6 q" q
- (command "union" tstmp "")
o; x) \. L: Z - . q0 u7 i" P/ W! c y8 e, k) I
- ;-------------------------------------------------------------------5 s' q0 I/ G$ t2 {+ V
- ; 螺旋进行阵列操作，然后再作并集（可能会耗费一定时间）
. C! [ g, K2 R9 z - ; 得到的实体再切除到指定的螺旋高度+ g L" a- }( E+ b6 s0 E8 p
- ;-------------------------------------------------------------------
6 [& I2 j" c3 t. J H
3 H- d7 m7 Q5 Q) D9 t B- (setq e (entlast))9 l7 Y( {- O) Z6 p( O
- (command "array" tstmp "" "r" ttal 1 threadpitch)$ ?6 e# {# p5 W, D" f4 R- _
- (repeat (1- ttal)
' ]% H0 w3 G5 Q/ k" |+ t - (setq e (entnext e)
0 _* Z6 I' H+ F9 D% f - tstmp (ssadd e tstmp)6 J2 Y+ W$ P t/ g: p9 g
- )1 ~9 a5 c |" K, u
- )1 C# e( U( E9 R( Z1 E
- (command "union" tstmp "")2 [" ~, H- C- m& e: |3 S
/ m' b. c% K$ Q! M- ; 若开始创建45度的圆锥
+ a3 l, M0 s! d# c- ]* o" D - (if (/= startcone "order")
9 M7 E) b/ r& P. }* E# ? - (progn (setq e (entlast))
+ h+ p! D; z: y" J+ V+ Q7 U - (command "cone" (list (car ptStart) (+ (cadr ptStart) threadpitch) (caddr ptStart)) "d" radmid "a" (list (car ptStart) (+ (+ (cadr ptStart) (/ radmid 2)) threadpitch) (caddr ptStart)))
' O3 s, w. c: F* k T; D6 Q4 O - (command "union" "l" e "")$ z4 T. h+ C; S6 M, W4 x
- )- A r+ K/ B5 X& N X
- )
4 J+ ^: x) ?( G3 q - , |6 H5 v( d. W |2 ~; m/ [ I
- (command "slice" "l" "" "zx" pttmp11 pttmp12)
; O2 p8 J6 l4 K& n, O! } - (command "slice" "l" "" "zx" pttmp12 pttmp11), k. S# l- X9 N( x2 F' t: R" y
- (command "move" "l" "" ptStart (list (car ptStart) (- (cadr ptStart) threadpitch) (caddr ptStart))) 5 }5 t) m: t% L9 \# W7 i
$ c$ b( q) v+ [$ Y. ~" i$ _- ; 创建最小直径的圆柱体，然后与螺旋作交集
: s1 r8 W) g% W8 T1 X - (setq e (entlast))7 d" Z/ p4 F* g. n$ \1 ~8 P
- (command "cylinder" ptStart "d" radinner "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart)))
- `; j/ G- S$ S+ y9 C4 L* i0 h - (command "union" "l" e "")
u* g" ?" e1 N! \$ C; Z- v - (setq tstmp (entlast))* S9 K- ]- C, J7 T* V4 W3 v4 [
- 8 |5 T) d' [; r2 T# p
- ; 创建中空的圆柱体
( n$ I9 w! G# ? y - (command "cylinder" ptStart "d" radmid "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart))) ; minor dia
2 j' P, A( h* z# n0 d/ E - (setq e (entlast))0 f/ }" b7 a; J* Q
- 7 E% {; T! @8 ~) q( l
- ; 若最后创建45度的圆锥, @0 ?* i; I6 t( h
- (if (/= endcone "order")$ k. _) ~: i& M8 w6 h8 ]) _1 K
- (progn (command "move" "l" "" ptStart (list (car ptStart) (- (cadr ptStart) (/ (- radmid radinner) 2)) (caddr ptStart)))
8 S( ~' ?3 ]; N# l9 t* a - (command "cone" ptStart "d" radmid "a" (list (car ptStart) (+ (cadr ptStart) (/ radmid 2)) (caddr ptStart)))
- j& ?! _8 \% m9 U% [$ U$ h - (command "move" "l" "" ptStart (list (car ptStart) (- (+ (cadr ptStart) (abs threadlength)) (/ (- radmid radinner) 2)) (caddr ptStart)))/ D/ D0 X* n) g9 W
- (command "union" "l" e "")
H2 c" b/ {/ `8 z4 `8 c - (setq e (entlast))0 g, G4 u- n. S* m _
- )3 P% s5 N. b3 v5 u9 Y
- )# `, N. t* G8 O. W$ v
- ) `) e5 I6 w% U9 _( f5 a2 ?5 ]
- ; 从大圆柱中减去小直径圆柱' P4 |' v; k# | K/ {
- (command "cylinder" ptStart "d" (* radmid 1.5) "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart)))
% F9 O- { ?" Y8 A; a - (command "subtract" "l" "" e "")
3 @0 {0 @ o4 w* n$ v - (setq e (entlast))! n$ _# l4 P' G- B; c, n( u3 C5 z: H
! \6 r: y9 M1 b2 G) \( Y* Q- ; 从螺旋中减去圆柱* O" j- v* ?2 d8 E2 H% }
- (command "subtract" tstmp "" e "")
9 L3 m, F9 _; h, i1 W1 w - 3 J* R: Y3 n+ ~. j/ L
- ; 如果螺旋长度为负然后镜像
: j2 @# }+ `+ n# w2 V3 S - (setq e (entlast))4 E. k- @/ |& a l
- (if (< threadlength 0) (mirror3d e "zx" ptStart "y"))
8 N- ^' A' ~# c7 T6 W* |
9 E }7 i7 z$ r& @! b- I& S( C6 n- (command "zoom" "p")9 z# W' \* s& z8 L2 h0 y% P; n
- ; (command "undo" "end") ; 结束undo步骤
; |# E, `3 R$ w6 j - )
- |& u& F: z) D; ]) P" @ - # h$ v5 x* M3 ]5 R$ I2 _, I% o g/ _
- ;;;---------------------------------------------------------------------------------------------------------------------;" [5 N8 b; ]& a* F
- (arxload "geom3d" nil)
' P& L5 h, s2 t: C5 {* W - (princ "
# K5 g0 k+ c0 {4 ^- @. A% H - 3DThread 已加载。 ")5 L. ~ K$ u0 s) Y I z
- (princ)
! V7 {5 |7 k0 r: \* a' O
4 `- A, d; x% v" R. p$ i+ b" U+ s& w- H+ V8 I+ \& B- R- _
1 c' L, W. b- \* T2 U三、弹簧源程序
- \1 P: O! |8 j7 i/ s" c. o- (defun errMsg (s) ; 当命令执行时出现错误
& ?; D- D5 T+ A/ i - ; 例如用户按下了CTRL + C5 W( _$ c, k* l, v
- (if (/= s "Function cancelled")
+ {" \% j2 [ s2 W0 |, R% p - (princ (strcat " _2 `3 d- D. d
- Error: " s)). F" d5 @) ^" L! U
- )
! M# U/ e: I" g8 `* D7 X7 Y2 _' ] - (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值
0 M% S- J6 B! z8 G3 f1 M; r$ b! @ - (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值" {* d+ B I! B# R! \; c
- (setq *error* olderror) ; 恢复旧的错误处理, u* a0 |: \6 S
- (princ)- P8 ~- b( L; a& N L
- )4 ] d) j. S. G% T$ ?: U
4 y e: n0 N: F/ M# n# x9 r- (defun spring (nRepeat cntPoint bhfac lr strad bvfac
3 R* D4 X; I- n3 K" ^% i) J - / angle distnc tp aGrw dhGrw dvGrw Pi2 dv)
. u3 V# S: t. m# o& b/ F; x; P- M- B% ~ - ; u* p+ P6 K7 K$ E
- (setvar "blipmode" 0) ; 关闭 blipmode
/ l Z1 M$ c; }/ ` - (setvar "cmdecho" 0) ; 关闭 cmdecho3 P/ d/ ]' O1 _" [6 P
- (setq Pi2 (* 3.14159265 2))
) w. r* ]$ c$ L: J* M1 x - (setq aGrw (/ Pi2 lr))3 f5 r' |4 A0 z$ B- t# m
- (setq dhGrw (/ bhfac lr))
% J F+ V# l: X4 T* D - (if bvfac (setq dvGrw (/ bvfac lr)))
; D% F/ N* U# D1 ?! L5 l! z - (setq angle 0.0)* ~; C7 p9 i: A0 `6 o, g* q1 G+ H
- (if bvfac
; f5 L; V0 c$ j: o4 B$ | - (setq distnc strad dv 0.0). I% U8 W4 ]# u% \$ u% M
- (setq distnc 0.0)1 E/ a, @. ]; g) [( L% g
- )
% B* P1 g6 n0 S% J4 Q, b' ] - (if bvfac
4 |! C4 t6 ?) Q Z% H/ X( `6 t - (command "3dpoly") ; 开始绘制弹簧
/ u+ u5 u+ K: q( E4 w+ D - (command "pline" cntPoint) ; 从基点开始绘制弹簧( \6 @( j: K' i* y: ~" H2 ?) y
- )
* p( Z& a; @/ B: D( g - (repeat nRepeat 5 R2 {8 Y" t$ w. w" l. N
- (repeat lr
+ D# ?; [: U9 D# ~. e0 O% C/ f. s( |! h - (setq tp (polar cntPoint (setq angle (+ angle aGrw))2 d; z+ D/ S; w4 V
- (setq distnc (+ distnc dhGrw)): C' r. G6 g0 o* W
- )8 }9 M' m" w5 A4 t
- )2 l( M/ t/ i7 t. E
- (if bvfac
5 o: W. R3 z* l; v7 r - (setq tp (list (car tp) (cadr tp) (+ dv (caddr tp)))
9 ?. y, F: U" C5 W: y - dv (+ dv dvGrw)
. @7 s. @. k/ j1 j, w0 X2 J4 } - )
. w1 [/ f! c& [1 V# x. S* X5 Q' r - )
2 S8 V: P2 ^& h$ P( S - (command tp) ; 继续输入下一点
2 d6 T" U* t! @' G/ h - ): Q; k' i: }" J+ |+ x, H/ v D
- ) ( R2 y+ d* v0 h0 I. n
- (command "") ; 输入结束
( O" P% l. z8 B4 k - (princ)
9 W4 d; W$ }! k$ K! O - ) 7 h! o( }. [& b* {8 f, U A! P6 m
- - [2 V1 @4 e [0 z& G- `: s& I
- ;;;
" ^4 p+ X# N- f - ;;; 生成三维弹簧函数调用接口
4 d- a9 n* K3 e4 Y5 K* w - ;;;
. G8 x% x Y, y8 S" L - : U1 v N, k W U- M D
- (defun C:3DSPRING (/ olderror cmdch blpmd cntPt RottCnt horiGrw vertGrw bgnRdtn ptCntPerCircle)
# v5 ^$ t( V$ l. z - (setq cmdch (getvar "cmdecho")) ; 获取cmdecho值，以便调用结束后恢复 k. t: w. s0 J9 w! a8 q
- (setq blpmd (getvar "blipmode")) ; 获取blipmode值，以便调用结束后恢复
) `. k5 x5 T1 ] n/ Y - (setvar "cmdecho" 0) ; 关闭 cmdecho
( l! ~+ ? ^8 U8 k% O" @/ ] - (initget 1) ; cntPt 必须非空4 t; X2 [! J+ D' S3 q2 ?2 o! k& ~
- (setq cntPt (getpoint "
0 N% c% ~5 e! [5 H* g z6 ^ - 请输入底部中心点: "))
! ]5 ?) V! P% v# J - (initget 7) ; RottCnt 必须非零、非空,不可忽略
" i6 N5 [4 K' ? - (setq RottCnt (getint "
# j$ t' m* T9 j. S - 旋转的圈数: "))
& v1 L G/ o$ j# Z6 Z% Z: ]3 @2 E0 { - (initget 7) ; bgnRdtn 必须非零、非空,不可忽略: B* @1 r7 T1 ]
- (setq bgnRdtn (getdist cntPt "
3 w( _; t. A3 v, Z - 起始半径: "))
% I, z! Y: N# i8 s7 i2 a4 u+ U - (initget 1) ; cf 必须非零、非空1 {& D2 D& s6 k, Z f
- (setq horiGrw (getdist "! n! c% f6 J# g( k% w u" h- q& N" f
- 每一圈的水平增长距离: "))
8 J9 L1 L2 I- k3 k& e - (initget 3) ; cf 必须非零、非空
& V" N; j) X! f) V8 Z - (setq vertGrw (getdist ": o; }- M* \1 k# J, N
- 每一圈的垂直增长距离: "))
- y4 j: _- U+ M3 H8 P% K" r1 M* L - (initget 6) ; ptCntPerCircle 必须非零、不可忽略+ T# p% N2 L; X* H# y0 N* r4 z
- (setq ptCntPerCircle (getint "
4 v0 @4 U, @6 \* j6 c; b% \ - 每一圈的插值点数<35>: "))
: \3 |% [& X! f/ J" Y4 ]1 W - (cond ((null ptCntPerCircle) (setq ptCntPerCircle 35))) 9 H8 q, z1 e7 Z* Q& |0 ^
- (spring RottCnt cntPt horiGrw ptCntPerCircle bgnRdtn vertGrw)
0 o; K$ B; G9 e9 S; O9 O# B - (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值
9 Q" W& C7 {+ H; B, z - (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值
4 ^8 n% N, k6 t8 n - (setq *error* olderror) ; Restore old *error* handler
% o9 _- H7 J0 ] - (princ)
1 b" U; M" l9 G9 e4 q% L! ?
( M7 p: }) Y) B, m6 O4 o" R" e- )
; ] n4 {+ _1 b5 Q' v, e- E
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发表于 2006-4-14 13:10
发表于 2006-5-5 10:43
