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9 U! L F. q1 k( l9 M; s+ u
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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：- ~' `' \: J5 O& y, ]' X; C
一、齿轮轮齿渐开渐开线
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# d# x) n. \5 ]# b5 d2 h+ Q6 `, }- (defun c:gear(/): s: a0 C; z. p# o% ?! [. v
- (( X5 N7 n& g& `/ u6 s; O. z
- setq
& V* q4 x# A" [ - p0 (getpoint"输入齿轮中心p0: ")
. y# B- W/ }$ E4 s2 o( d - m (getreal"输入齿轮模数M: ")
8 f) X8 I% o9 y: X3 S( Z' J - z (getint"输入齿轮齿数Z: ")
: S) m" @0 f7 }, } - ha 1
; v+ s; o& ^8 X - c 0.25
- t& c5 l3 c3 p% v! b7 G - a (/ pi 9)2 Z# F2 g" F% g2 |1 {' k& R' a
- ra(/ (* (+ z (+ ha ha)) m) 2)
/ ^' M; L6 l* [* ?/ m7 e - rf(/ (* (- z (+ (+ ha ha) c)) m) 2)
# Q7 F8 m) P# N0 T' E$ Y - r(/ ( * m z) 2)
G+ y1 A* @& Q% e/ |! d& K - rb ( * r (cos a))
8 w, U6 f! k: F7 |5 B1 @ - ri rb
0 u: D4 n5 Z4 Q& F - ang 0' g. ]1 n1 o# W Q2 I2 K" _
- g (polar p0 ang rb)' {/ _5 ^6 T! ~% k6 b) g# ~5 B$ ]
- )
# w! o9 V' h' Y, G4 F/ \ - (command "circle" p0 ra)9 |1 H* D# S$ h7 C
- (command "circle" p0 rf)" }2 E6 M+ d9 M) H( X9 C5 f
- (command "circle" p0 r)
C1 ?; @) B4 t0 v4 ` - (command "line" g)+ ], V! I+ B. z' b" m
-
/ e, u7 B# A& p* p! _* r: J, U - (while (< ri ra)
( b& G. i" e# M& U+ E$ ], Z' J - (setq! G5 _9 y( A* ^5 f2 o. q7 g% z
- ang ( + ang(/ pi 360))( u, p, P& ^9 P' \! }5 U/ {
- ri ( / rb (cos ang))
( C; X* v! E" |0 `; k$ B; k4 o - cta ( - (/ (sin ang) (cos ang)) ang)8 D1 b% p, U$ {8 y8 B i2 z: D
- g(polar p0 cta ri)
( P q% O% A1 b4 v6 i - )
- x/ A; ]3 P& R* n. B$ `' @' `' c
0 K8 `' P9 ^& k. V! H! `& c- (command g)3 c+ O0 @9 h5 g( l; @. w8 n4 F
- )
' y4 |5 d3 R3 W+ V/ J6 Q, j$ y - (command )
N* i: l+ |& p6 b# H& V - )$ `9 Z9 j, Z4 _; L5 N
0 J7 _2 [" {0 {% k" r O+ O
/ ]0 m; J- M6 ^, N- @二、螺旋源程序# B( c2 s! O4 i% a5 _
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- (defun errMsg (s)
3 v) C, b1 D) e+ f% d1 O' H% ]# k - (if (/= s "function cancelled") (princ (strcat "
3 z- d" ~" b7 T$ x5 ~# q' V - Error: " s)))/ U0 D8 s+ R' m& ^) a r- D
- ; 当命令执行时出现错误8 n9 t$ R+ J# H8 N- U3 }
- (setvar "cmdecho" ocmdold) ; 例如用户按下了CTRL + C. n! b, s, b* ^) S* L9 x A4 G
- (setvar "osmode" osmold) O5 e) _( S9 s7 I) n& n
- (setq *error* olderr) ; 恢复旧的错误处理: C, ?, B( X, a- ~# n
- (princ)+ Q( f6 b5 ~% X0 _7 v/ W
- )
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- (defun c:3Dthread (/ radouter threadpitch threadlength threadangle ) S# P0 u1 R( h$ w1 p9 b
- ptStart innerdiafactor radmid radinner ocmdold osmold 4H 5H 6H h6 g6)+ `- a( T- D* w3 h2 ?- p' N
- ;-------------------------------------------------------------------! j3 |9 G* b* p1 m& S, F
- ; 获取公制外径大小、螺距总长( K; |5 Y: M: D/ q# j0 j8 O9 V
- ; 然后计算一系列几何点6 a3 e, M* M7 `' J. I, j) J. v
- ; 并且关闭对象捕捉、命令回显1 {- E. y/ N7 J* _( e
- ;-------------------------------------------------------------------
( _; N" o- h3 U, i - (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))
$ r, M$ X/ G% t" t. s - (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)) + N; U: c( e5 [. u9 R
- (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))
1 v' v, m2 I8 _1 Q4 v& `. q$ W" x+ ] - (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))
2 R. h* H- B' ~) M - (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)) ! m2 A9 A5 u( B+ M
- 8 ?, ?9 W1 a& e% M: t o" b3 M
- (setq osmold (getvar "osmode")) ; 保存调用前的osmode系统变量值0 @+ } V2 M0 c: |( Q4 B- o* O
- (setq ocmdold (getvar "cmdecho")) ; 保存调用前的cmdecho系统变量值
# p! s; E; K# k: _. a, f3 S) P0 p - (setvar "osmode" 0) ; 关闭对象捕捉
) Y0 |$ H) I! L( D* \+ H2 r - (setvar "cmdecho" 0) ; 关闭命令的回显
8 s! ?/ w/ H( B3 E. E3 C - 2 B1 t( G6 [; X( H; e
- (setq innerdiafactor 1.5) ; 设置内径系数
w. n0 I5 r7 R! b3 ] - (initget 7) ; radmid 必须非零、非空、非负7 r) b& r( y" s
- (setq radmid (getdist "' r/ E* E* X% \2 r! `: k
- 公制外径: "))7 Z3 q- F/ D* H2 P0 h) [
- (initget 7) ; threadpitch 必须非零、非空、非负- L) V0 g# G% T5 x) q
- (setq threadpitch (getreal "
8 m& y4 s3 H5 {/ \5 [0 L0 @ - 螺距: "))
1 } Z: H W$ J2 E" G - (initget 1) ; ptStart 必须非空
: d) q5 ^5 ]: b i1 p3 E, a - (setq ptStart (getpoint "
9 s! o( _9 Y+ Z3 T* ?- a6 \! ~ - 起始点: "))% z; C X2 ^0 j9 c: S7 `- n/ |
- (initget 3) ; threadlength 必须非零、非空、非负
- }7 J' l, n' p: n' ~# i - (setq threadlength (getdist "$ F$ Z8 X+ V# a% s8 A6 y& C, _+ d
- 螺纹总长(Y方向): "))& B8 a9 T) \. p* P! }" e) [; n
# _6 ~4 G* u" R- s( ?7 [1 K- ; 对公制外径添加公差! s+ P, z$ ?! G6 W/ d$ i
- (if (<= radmid 3) (setq order 0) ; 根据公制外径确定公差带中位置
; B1 v+ C6 E: ~9 B5 { G - (if (<= radmid 6) (setq order 1)
7 F/ L# |! {" P4 K1 _( p3 m4 } - (if (<= radmid 10) (setq order 2)1 `5 g9 d8 p2 Y2 Q
- (if (<= radmid 18) (setq order 3)) j* p5 ?' ]. H4 n# X
- (if (<= radmid 30) (setq order 4)3 J0 m' L+ ~+ ^# ]1 r7 \) \3 m
- (if (<= radmid 50) (setq order 5): _9 d( Q9 `0 P8 ~0 \* _
- (if (<= radmid 80) (setq order 6)
4 K! A2 `) I0 @6 x - (if (<= radmid 120) (setq order 7)
: K: _ |9 L* h$ C9 v* h) D - (if (<= radmid 180) (setq order 8)
. ?! ?4 ?6 O% i! X7 k - (if (<= radmid 250) (setq order 9): o" }. _& x( D3 h- n( W: M/ N
- (if (<= radmid 315) (setq order 10)
0 Z& n' q; r# ]4 L" M - (if (<= radmid 400) (setq order 11)
+ x7 d" }8 }! ` - (if (<= radmid 500) (setq order 12)
. I; T$ d! W# F; T- R2 ]4 Z* H' a - )))))))))))))
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! i8 c& K2 I( ]- (if (< threadpitch 0.25) (setq radmid (+ radmid (nth order 4H))) ; 根据螺距确定公差带6 \0 Z& f9 ]5 P6 r9 i
- (if (< threadpitch 0.35) (setq radmid (+ radmid (nth order 5H)))+ K) N% x- U" ]: n
- (if (>= threadpitch 0.35) (setq radmid (+ radmid (nth order 6H)))
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- & U0 B2 C+ t% {8 n
- (setq h (* 0.866025 threadpitch)) ; 计算齿高
2 b9 \. }/ t7 g7 [; U; l - (setq radouter (+ radmid (/ h 4))) ; 计算外径4 ~6 C) ]4 Q8 }7 A8 ?3 k# |# J& ~
- (setq radinner (- radouter (* h innerdiafactor))) ; 计算内径. ]9 Y- U# c( B
- (setq threadangle (+ 30 0)) ; 计算齿顶角3 Y' V, _" B, L, O; {
- 6 J" d2 ]% D0 a6 S4 |- M
- (auxithread radouter radmid radinner threadpitch threadlength threadangle ptStart) ; 调用绘制三维螺纹的子函数
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- (princ "' ]7 p# Q. {6 v- F' I- M+ j
- 三维螺纹创建完成")2 k! ]: Z! g7 l2 B& r& _
- (setvar "osmode" osmold) ; 恢复调用前的osmode系统变量值+ ]! N, B5 I( P. W& V
- (setvar "cmdecho" ocmdold) ; 恢复调用前的cmdecho系统变量值: @/ u5 U7 x% _8 g& |; ?
- (princ)
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- " N% ]( e- S5 _2 ?5 y2 `
- (defun auxithread (radouter radmid radinner threadpitch threadlength threadangle ptStart / ttal pt1z ang pt1a
- c7 q' k9 u0 n" }9 L& u8 D - pt1az pt3a pt1b pt1bz pt3b pttmp1 pttmp2 pttmp3 pttmp4 pttmp5 pttmp6 pttmp7 pttmp8 pttmp9 pttmp10 pttmp11 pttmp12 tstmp startcone endcone)+ W/ d0 h/ g" R4 J, v. \# C' \$ S7 {
: R6 D5 X. r8 }2 G' T- ;(command "undo" "begin") ; 开始undo步骤
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) i6 |# O [ \! E. K( u x- (setq ttal (+ (fix (/ (abs threadlength) threadpitch)) 3)# g; W% i6 a2 X7 w4 p
- pttmp1 (list (- (car ptStart) (/ radouter 2.0)) (cadr ptStart) (caddr ptStart))9 T2 q. i5 u, o; u( [0 \0 m
- pt1z (list (- (car ptStart) (/ radouter 2.0)) (cadr ptStart) (+ (caddr pttmp1) 1.0))
% ^# _- N) A- {3 I8 w, |0 m - pttmp2 (polar pttmp1 (/ (* threadangle pi) 180.0) 1)/ U4 P7 p. P3 V! K* N* Y
- pttmp3 (list (+ (car pttmp1) radouter) (+ (cadr pttmp1) (/ threadpitch 2.0)) (caddr ptStart))
$ T* K0 S U, K; U& H! C" m; H - ang (angle pttmp1 pttmp3)
1 o, E8 p: [$ c - pt1a (polar pttmp1 (+ ang (/ pi 2.0)) threadpitch)& W' L* a! c7 C6 x7 \
- pt1az (list (car pt1a) (cadr pt1a) (+ (caddr pt1a) 1.0))$ g5 G3 Y9 Y/ r& R3 l( j& u0 v
- pt3a (polar pt1a ang radouter), `. w5 O) k8 |$ N% ]2 v7 s! t
- pt1b (polar pttmp1 (- ang (/ pi 2.0)) threadpitch)! A8 D) L3 j J# f% {* @
- pt1bz (list (car pt1b) (cadr pt1b) (+ (caddr pt1b) 1.0))$ L0 g# R5 v$ E/ A4 ?1 W9 z! T! \
- pt3b (polar pt1b ang radouter)! }" P) u# _3 U9 s( ? \4 k
- pttmp4 (polar pttmp3 (/ (* (- 180 threadangle) pi) 180.0) 1); g5 j3 s! c$ W, X% n8 ?" v
- pttmp5 (inters pttmp1 pttmp2 pttmp3 pttmp4 nil)6 E; i" N* z j& p" T) H
- pttmp6 (list (car pttmp5) (cadr ptStart) (caddr ptStart))/ A8 J0 [8 g2 D$ b, B' S, {
- pttmp7 (polar pttmp1 (/ (* (- 360 threadangle) pi) 180.0) 1)
& _+ X8 @: x F4 B! |& F$ i7 A - pttmp8 (polar pttmp3 (/ (* (+ 180 threadangle) pi) 180.0) 1)# ]( C7 ?4 i; I6 `6 n' }
- pttmp9 (inters pttmp1 pttmp7 pttmp3 pttmp8 nil)
) `* Q* O S, ]& n' V( P - pttmp10 (list (car pttmp9) (cadr pttmp3) (caddr pttmp3))
& D& H( J) }' n& {8 G1 @ - pttmp11 (polar ptStart (/ pi 2.0) threadpitch)
- s1 x) U8 u6 P4 Y0 n; S& G - pttmp12 (polar pttmp11 (/ pi 2.0) (abs threadlength))1 T6 {$ v# C# O3 P' d
- )
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- ;-------------------------------------------------------------------
6 H! l) S6 m1 T8 W! ^6 { - ; 绘制两个倒置的并偏移1/2螺距的圆锥2 Q1 j$ {: T9 c
- ; 这两个圆锥都以中剖面剖分: ?6 A5 o+ G& l/ M7 U
- ; 进行并集运算
7 |# }6 C7 H# F# A0 w6 \3 v8 n - ;-------------------------------------------------------------------
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# j) s2 ?: ?" }: l) x& G4 L- (SETQ startcone "order")- n5 S6 |% F1 l
- (SETQ endcone "Y")
# c& e6 M5 N; g0 \5 _. X! t - (command "zoom" "w" (list (car pt1a) (+ (cadr pt1a) (abs threadlength)) (caddr pt1a)) pt3b)0 h( E& Z" U8 Z8 h5 u& \, a
- # \6 d+ i& V! l3 {) L! E0 ]% G
- (princ "
& [9 ~ V# D) q - 正在绘制三维螺纹，请等待")
; [4 F7 K0 \8 Q) Q - (command "pline" pttmp1 pttmp5 pttmp6 "c")
; x( S" T# U0 p" ^8 ]' b1 f9 q - (command "revolve" "l" "" pttmp5 pttmp6 "")/ G- p( C/ O; ~% J- H4 V+ i
- (command "slice" "l" "" pttmp1 pttmp3 pt1z pttmp5)" ]$ [% ^5 l3 m$ n
- (command "slice" "l" "" pt1a pt3a pt1az pttmp3)
7 _" Z3 s Q! g- d) |! ^ - (setq tstmp (ssadd (entlast)))
/ X& x4 t, B, t; z% ^0 O; [% ` - (command "pline" pttmp3 pttmp9 pttmp10 "c")
8 k" N$ { W" e" u! V - (command "revolve" "l" "" pttmp9 pttmp10 "")
' C8 N, D. q7 V4 e0 \" K - (command "slice" "l" "" pttmp1 pttmp3 pt1z pttmp9)
! c. H! y0 F8 X4 V8 M& v - (command "slice" "l" "" pt1b pt3b pt1bz pttmp3)
/ Z, ?) y3 x% {1 v& \ - (setq tstmp (ssadd (entlast) tstmp))
! k1 y x8 C, W - (command "union" tstmp "")
# G3 O, y3 N2 W8 q9 @) m - 3 d6 e, t5 R* M3 `
- ;-------------------------------------------------------------------0 p, ^ D i% I' e! a
- ; 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
; g, J6 G: }9 ~ - ; 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3 H1 ?0 [; R1 I; @
- ; 在最后一步被切除
; T% f4 h! g/ y9 u( Y - ;-------------------------------------------------------------------( M$ `% I5 |8 I2 }9 z+ I( j
9 Y. ~, ~: o9 V- l( t6 o& b1 ?- (command "slice" tstmp "" "xy" ptStart "b")* }) `' T7 D8 ]; k, @7 y
- (setq tstmp (ssadd (entlast) tstmp))1 {+ U0 J: ?1 H: t% b8 D4 W* l, j
- (command "mirror" "l" "" pttmp1 "@10<0" "y")! p1 p) c" [' ]. ~
- (command "union" tstmp "")
' E2 F: M5 I- g U0 Z; f - ! A" j) c P5 V- |. C8 Q2 ]
- ;-------------------------------------------------------------------
$ n4 ^& c i' [, [' @ - ; 螺旋进行阵列操作，然后再作并集（可能会耗费一定时间）
' d; `; V+ _: n! k% ~' | - ; 得到的实体再切除到指定的螺旋高度
# z6 ?$ w4 r6 R; d& P - ;-------------------------------------------------------------------
' T5 K2 t% A" h: @; G
" R6 Y. q8 B! i' M+ H% n- (setq e (entlast))
1 B( C K5 T2 H/ d. }* n7 W - (command "array" tstmp "" "r" ttal 1 threadpitch)
4 E/ ]3 V! N! F( |8 p - (repeat (1- ttal)
9 n5 z4 T1 {3 ?# l; c. f - (setq e (entnext e)) [; y8 H! B% N% W9 P# M8 ~6 ^
- tstmp (ssadd e tstmp)
0 ?5 c3 [4 K& }- b' u1 K0 L - )& Y0 O. R+ Q3 { l# p0 Y# v
- ); H% B( B: K. x6 P1 r! o: W" ^
- (command "union" tstmp "")
7 T; F2 I& \6 O* Q6 q0 s# Q
* L! q9 C0 K- b! {4 x( Q5 N- ; 若开始创建45度的圆锥9 \( O% h+ d7 D3 e9 n+ F' c! E
- (if (/= startcone "order")9 s& Y' u K* u8 S: M# ? p
- (progn (setq e (entlast)): ~( e: I* S. l
- (command "cone" (list (car ptStart) (+ (cadr ptStart) threadpitch) (caddr ptStart)) "d" radmid "a" (list (car ptStart) (+ (+ (cadr ptStart) (/ radmid 2)) threadpitch) (caddr ptStart)))
% l- E6 g7 y5 t0 N' A0 i& {$ K - (command "union" "l" e "")* b7 v0 Z6 y2 [; t: T" q
- )2 i1 J/ w3 K, E$ d4 B6 k
- )
$ \' H( m7 p6 `2 p( { - ; X3 T* ]9 c/ K" Z- V8 X; ~3 t
- (command "slice" "l" "" "zx" pttmp11 pttmp12)8 V" L6 A4 F/ [: z4 g. S
- (command "slice" "l" "" "zx" pttmp12 pttmp11)' M, i8 S9 w: u
- (command "move" "l" "" ptStart (list (car ptStart) (- (cadr ptStart) threadpitch) (caddr ptStart)))
/ C0 ?+ _8 U0 o/ Y# _ - . B2 E9 f( t# T: X8 O2 o& {1 v
- ; 创建最小直径的圆柱体，然后与螺旋作交集4 y" s0 J5 l3 [5 w; M4 X! @
- (setq e (entlast)): Q3 x9 ~1 @/ R1 C9 Z
- (command "cylinder" ptStart "d" radinner "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart)))
& i8 t4 y2 J9 u9 e- I - (command "union" "l" e "")
" O6 i" I0 s$ M4 U1 J+ x0 b - (setq tstmp (entlast))
! _9 Z2 Y, E. h, P! i6 W; d3 a0 t - 5 `6 t' q& u* ]( [1 C
- ; 创建中空的圆柱体
1 m, W0 \/ T4 C/ \" h4 P( a4 P, S - (command "cylinder" ptStart "d" radmid "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart))) ; minor dia
+ P; c" d) n3 w* U: x - (setq e (entlast))4 q7 H+ H/ w) _$ m' O! Y1 y& C
. T. q2 @8 L7 z5 T- ; 若最后创建45度的圆锥
: s7 v3 w! t1 U& J! Z- v5 T: n" x8 F - (if (/= endcone "order")) D5 B2 \- S. q6 f; U0 v
- (progn (command "move" "l" "" ptStart (list (car ptStart) (- (cadr ptStart) (/ (- radmid radinner) 2)) (caddr ptStart)))
1 z+ p, o) W3 z9 l! M5 @ - (command "cone" ptStart "d" radmid "a" (list (car ptStart) (+ (cadr ptStart) (/ radmid 2)) (caddr ptStart)))
" O6 t- @3 g3 [, _2 W$ g( X; [7 [ - (command "move" "l" "" ptStart (list (car ptStart) (- (+ (cadr ptStart) (abs threadlength)) (/ (- radmid radinner) 2)) (caddr ptStart)))1 f9 F2 v3 ]/ t- C. l7 A
- (command "union" "l" e "") ! u0 Q0 F. f! y1 h. J
- (setq e (entlast))6 F% r1 s. a, K, r4 |& Q4 C2 |
- )3 `3 l% z8 r; s3 j5 V
- ), D+ ^- `% c+ W N
- ; |* i7 \7 M! J4 h3 n" T1 a+ [
- ; 从大圆柱中减去小直径圆柱4 w+ e) g2 E( A6 H" Z/ g
- (command "cylinder" ptStart "d" (* radmid 1.5) "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart)))
K% ^+ Y4 B2 v. f - (command "subtract" "l" "" e "")+ y8 ]2 s: j4 N! C: R
- (setq e (entlast))& g3 n0 t9 ^5 v7 q# c4 w
- ! E* l% o2 v( P( M- t) Q4 o! q
- ; 从螺旋中减去圆柱
& H4 p* @' [/ ]* ^1 Z8 d - (command "subtract" tstmp "" e "")' B1 |4 l5 A& I$ j4 K+ T2 M- [0 U8 O
5 U, Q. i7 k. q# ?$ H) T- ; 如果螺旋长度为负然后镜像
! R+ c# p" N) F. q9 L) I# l - (setq e (entlast))
, n! p; e; O: S& \1 e( V1 B - (if (< threadlength 0) (mirror3d e "zx" ptStart "y"))4 }! h8 x! x6 a/ M/ }0 ]1 V$ t, m
- ' ?4 C) h9 y1 `- j# {9 b% g
- (command "zoom" "p")2 d2 w1 w. y. d4 E" Y( l1 \; k, Y
- ; (command "undo" "end") ; 结束undo步骤& E, U h% Q. d* n
- )$ u+ S4 }6 W2 g6 f: H0 G9 z
- , q3 V: m" A6 n: I
- ;;;---------------------------------------------------------------------------------------------------------------------;
! f5 T2 [/ [4 J0 p) t, ~; e - (arxload "geom3d" nil)
, ]! w; n" P4 O. I( Q* P, p& z+ l2 b - (princ "
& F( V- s' G! D1 t2 D1 C - 3DThread 已加载。 ")
. f" |3 p6 y- A+ t$ m' t - (princ)
' r4 i6 U+ U' c9 a6 E v! O: h
% U0 b# [* p" h$ p: E
5 c% @& Q) T( C3 X$ R, U
三、弹簧源程序' d Z7 M) `) A5 u) b6 q
- (defun errMsg (s) ; 当命令执行时出现错误
5 U# G5 i @6 k$ K$ ~ - ; 例如用户按下了CTRL + C
( m3 L3 |! r$ {7 L* F: f1 S: T - (if (/= s "Function cancelled")
) P( w8 \0 k% |. {+ }- w, | - (princ (strcat "
, p7 a6 @0 b# C3 h- y, h+ }& O - Error: " s)). n& w2 I# U9 Z% Z1 t4 \* }# D! A9 \
- )
& A9 |5 a* V9 P+ p/ t - (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值2 z% W- G( m9 s* n
- (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值' r- r. m; T, @" g) w/ O& M
- (setq *error* olderror) ; 恢复旧的错误处理
: T0 R- t! u' p2 o; H P6 _1 r - (princ)" I. ]& B5 E6 ~! w( Z6 V" l6 l
- ). n. a, G3 }' I# ~+ N, p
' M* ]4 J6 Z- B% Z) r- (defun spring (nRepeat cntPoint bhfac lr strad bvfac6 t" T. G: s) d) U+ I6 z! V, t' P: j
- / angle distnc tp aGrw dhGrw dvGrw Pi2 dv)& h+ i L( N p n+ X a2 M
% B% [% V, e1 F' t3 x- (setvar "blipmode" 0) ; 关闭 blipmode % K& B% x0 b3 f( L! w3 |* L
- (setvar "cmdecho" 0) ; 关闭 cmdecho
/ L T( g; w6 h8 ^$ A - (setq Pi2 (* 3.14159265 2))
8 i/ m j' D8 V u - (setq aGrw (/ Pi2 lr))$ E3 \. n. D: B: Y0 M5 Q
- (setq dhGrw (/ bhfac lr))5 b4 l% O. h6 o% m
- (if bvfac (setq dvGrw (/ bvfac lr)))
6 G( E" V+ u: y, | - (setq angle 0.0)) ]" c" }4 ?8 B% d* G+ J$ r
- (if bvfac
2 g6 Q8 w9 _0 t% U; f. H) h6 D - (setq distnc strad dv 0.0)
$ l E: w2 f2 h, S" K - (setq distnc 0.0)
) C4 a# `4 q; i- s) B: l+ Y - )
7 f7 e8 l5 F+ H; K/ Q9 t3 o9 |6 {: F - (if bvfac
2 q# Z. L* D1 a& { - (command "3dpoly") ; 开始绘制弹簧
+ q% y; N' g8 g7 k% t0 i - (command "pline" cntPoint) ; 从基点开始绘制弹簧
2 A& |; c5 s: A+ x4 X9 G& M - )
/ _% j; s9 Q7 G0 x8 n* ] - (repeat nRepeat
7 ]) l5 K3 ~. ^: s7 L9 a - (repeat lr % j5 e0 q7 `& w6 }+ c5 \
- (setq tp (polar cntPoint (setq angle (+ angle aGrw)); j' ?- m8 X$ g
- (setq distnc (+ distnc dhGrw))
3 T, |' R& {% [% I - )
# M7 i0 X) K! @2 g1 S - )5 Z! B2 h1 d# \0 S0 e
- (if bvfac6 |- r; m( W) ?' E# P
- (setq tp (list (car tp) (cadr tp) (+ dv (caddr tp)))3 g/ l% K* [1 M/ a3 k8 P3 n3 {
- dv (+ dv dvGrw)
/ L7 z9 x" v8 P - )
$ h9 L% _0 v; l1 _$ q4 n v$ p - )/ D9 N) t' Z) z# r# {
- (command tp) ; 继续输入下一点6 f6 ^. b9 ^. ?. U H1 D
- ): r- O* O+ q4 x7 r
- ) , n- z) r& _) v+ o" h
- (command "") ; 输入结束
& v2 B, t0 A7 T: v9 y B - (princ)+ n7 G3 r4 O+ p- a1 r4 ]
- )
& z/ z! Z7 R, Z' ]0 Y - 7 E4 b! f( u+ F% z* f
- ;;;, F" b4 F/ B* q1 k
- ;;; 生成三维弹簧函数调用接口
5 }+ j% n6 b& P5 O% l - ;;;
' g5 P" T! o$ Z7 [7 } - 8 |3 k. g% {( |9 y
- (defun C:3DSPRING (/ olderror cmdch blpmd cntPt RottCnt horiGrw vertGrw bgnRdtn ptCntPerCircle)
' s% S" y* z2 m( {$ i- g0 S - (setq cmdch (getvar "cmdecho")) ; 获取cmdecho值，以便调用结束后恢复
* ?1 s8 R& y4 P4 S8 } - (setq blpmd (getvar "blipmode")) ; 获取blipmode值，以便调用结束后恢复
# ~8 _5 J5 D% a; ^! g+ @7 M - (setvar "cmdecho" 0) ; 关闭 cmdecho
9 b+ I$ S- {4 Y! ?$ | ~4 S - (initget 1) ; cntPt 必须非空 C- V3 ^7 G. P: f9 @
- (setq cntPt (getpoint "9 S7 b0 H" Z, I' Z# }; Y Q: W' N
- 请输入底部中心点: "))
" D O# A0 _8 R6 g# U - (initget 7) ; RottCnt 必须非零、非空,不可忽略, X) ` t) W. k4 Y. n1 ]* G" H3 X
- (setq RottCnt (getint "0 D8 p; a& N" j/ J6 N0 J8 x
- 旋转的圈数: "))
8 b1 @, F- L0 F - (initget 7) ; bgnRdtn 必须非零、非空,不可忽略
4 o' I0 U- F- g3 L! B - (setq bgnRdtn (getdist cntPt "- X$ U: [3 ?+ Y( N, I- P2 G
- 起始半径: "))
/ o" J% X- }3 `! B) d) U d - (initget 1) ; cf 必须非零、非空8 f: W* ^4 t3 a% N' G+ O: Q, N/ ~
- (setq horiGrw (getdist "0 M( [# S0 y/ I7 D* a0 v; w
- 每一圈的水平增长距离: "))
+ |# V; y, E2 x! R% ~, ` - (initget 3) ; cf 必须非零、非空* U( @9 m* B y2 P
- (setq vertGrw (getdist "
! s" l, ?: K/ b+ `, j4 l6 Z6 \ v - 每一圈的垂直增长距离: ")); r5 a9 A$ a7 l4 e3 _3 Y: \
- (initget 6) ; ptCntPerCircle 必须非零、不可忽略
- X+ i! d3 q: {5 U& }7 p5 S; b& x. h - (setq ptCntPerCircle (getint "+ `+ p _* f3 B
- 每一圈的插值点数<35>: "))
# p J/ [1 {4 v$ \6 }$ T2 x - (cond ((null ptCntPerCircle) (setq ptCntPerCircle 35)))
; l$ Z# N7 n/ h. d% _/ C - (spring RottCnt cntPt horiGrw ptCntPerCircle bgnRdtn vertGrw)- F9 x! g2 P) O# F1 k/ G/ V7 I0 M
- (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值
9 @3 P" r& K# `: N: ` - (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值
# t0 D) v7 W; [( w6 E; r' h) }; Z - (setq *error* olderror) ; Restore old *error* handler
" c* I* Z& N. D O) p - (princ)
" b) Y9 U! t/ i% ` - 1 ^, E. W" L$ D
- )
: {! y& I/ [% I! H3 Y- D
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发表于 2006-4-14 13:10
发表于 2006-5-5 10:43
