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& n9 m. H% f! o/ j( k6 i( z
( J6 o1 g# G( i# A, H+ W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：
2 K1 a. @- m4 j/ O( z3 F0 j一、齿轮轮齿渐开渐开线9 r! {+ D2 j$ _- k% a
- ; V" S: w. _& Z2 K2 `7 z2 X/ k
- (defun c:gear(/): a, U! l/ c4 v% ~) W, v
- () ^$ K6 Y" T# ?9 ^( }4 h3 |; n+ w
- setq
4 S" _% ^ Y- |6 v/ J7 N. M - p0 (getpoint"输入齿轮中心p0: ")
6 Q5 t9 u: |3 X: W* R6 l$ { - m (getreal"输入齿轮模数M: ")2 y j- A. g1 R' \: L
- z (getint"输入齿轮齿数Z: ")
# X& ^6 [% I1 c1 a! ^- x - ha 1
6 w5 Q8 G$ G7 d! m' @& ?% M( u9 H; x - c 0.25& Z- p8 |; \+ u f) b% t- s
- a (/ pi 9)
- \" i1 S* }1 ~" t" E - ra(/ (* (+ z (+ ha ha)) m) 2). X* f" y4 e' |1 N v
- rf(/ (* (- z (+ (+ ha ha) c)) m) 2)
3 T* t5 T) `$ R# l - r(/ ( * m z) 2)
, G5 |! z& \) i* {6 V1 [( f4 B - rb ( * r (cos a))% n5 C3 n3 s! O) U7 L; ~2 W7 h
- ri rb
1 V3 X: R$ c# j9 Q$ w2 ? - ang 0
7 [" ]2 A8 @# b - g (polar p0 ang rb)
0 o( I1 n/ g. ^' o- ]8 T - )1 v/ ]8 ]3 P& W- \$ [9 k% s! @/ ~
- (command "circle" p0 ra)
9 S2 L$ O8 ~2 ^# F+ b1 k2 | - (command "circle" p0 rf)/ e; z: e0 h+ n
- (command "circle" p0 r)
* r+ m3 v" [4 i7 v) N - (command "line" g)" Z1 y& O8 m9 u+ Q4 J6 J( \
- r5 e" h* q6 ]+ G( m# v, w0 `( g
- (while (< ri ra)
( h1 I! r! V+ e. j - (setq
8 H7 F" h( m- [: Y% `0 E- e# ~ - ang ( + ang(/ pi 360))
: B$ J- `, Q+ r - ri ( / rb (cos ang)): F7 |" h8 L% J! D6 S
- cta ( - (/ (sin ang) (cos ang)) ang)
# ^+ a+ r6 ^5 z# H - g(polar p0 cta ri)
1 ^/ W c6 H( p/ z! w - )
$ A* Z- S9 K) L; W5 ] S
2 a4 k" j' ?# R0 S) T# r- (command g)
; P4 w, M. o: S# Y% m, O4 y - ). G5 }* M8 o, O7 x4 Y
- (command )
0 Q# k$ i3 U; ^3 L7 [ - )
1 Q3 ^- A2 r6 u) p5 X: H5 Q
; [2 A" U. x" h! e3 f% Q6 U2 X+ l. @/ _- v
二、螺旋源程序
8 r3 C, L% G1 n8 f: |' d. p+ P/ Y% N) R% i
- (defun errMsg (s)1 `3 P0 Y1 l% @* N: f- {
- (if (/= s "function cancelled") (princ (strcat "
+ ^; T8 y9 m" e, g7 v4 k - Error: " s)))- @: z$ g+ J/ P7 p" I; I
- ; 当命令执行时出现错误* O& l Q! y9 h& M/ d9 a# ~; i
- (setvar "cmdecho" ocmdold) ; 例如用户按下了CTRL + C! f# a9 a" |+ w1 {
- (setvar "osmode" osmold)$ _. T R4 d: l1 k9 ?, {
- (setq *error* olderr) ; 恢复旧的错误处理
; g" M1 X, o) P3 \* \* B% T2 R - (princ)& R. u) \9 g9 n; A
- )
! y& H/ G' t4 [6 d
( F; z! }% C4 W- (defun c:3Dthread (/ radouter threadpitch threadlength threadangle % K; z/ D2 H& z& K2 A5 p
- ptStart innerdiafactor radmid radinner ocmdold osmold 4H 5H 6H h6 g6)) u P9 K4 {3 ~! e5 L: b
- ;-------------------------------------------------------------------
8 ?3 {2 _; x1 [2 K - ; 获取公制外径大小、螺距总长
' |8 ^+ ]8 H. {# [& o/ H - ; 然后计算一系列几何点& \3 S4 \7 Z! k4 B
- ; 并且关闭对象捕捉、命令回显
/ {7 z4 [; C) ]0 Z" n3 D9 R* V - ;-------------------------------------------------------------------
2 x! y- L/ C. W5 ?# Z3 j. r - (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))
$ p' k) T3 H; O m" O - (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))
$ [% r9 t- X& 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)) n! j3 P8 |) @8 A; |8 `
- (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)) : `: t* Q* ^( L+ L: z, D9 O- G
- (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))
) [" w% G0 [$ u1 G% T) i - . A5 g! [4 K! B# M: ?* e5 J
- (setq osmold (getvar "osmode")) ; 保存调用前的osmode系统变量值: |; ~( m( p7 P4 B1 s2 J
- (setq ocmdold (getvar "cmdecho")) ; 保存调用前的cmdecho系统变量值
2 V% `2 ], ~4 V- u9 F - (setvar "osmode" 0) ; 关闭对象捕捉 7 Z, ^3 g" N# `1 E9 |$ v
- (setvar "cmdecho" 0) ; 关闭命令的回显
d, o V4 F, j" {; [& a1 V
. M3 f% M- k% g* L- (setq innerdiafactor 1.5) ; 设置内径系数+ l7 h4 L0 i& A
- (initget 7) ; radmid 必须非零、非空、非负- T5 ?' Z& d" E) K
- (setq radmid (getdist "9 {$ }0 c: o& |2 y8 e; j/ [
- 公制外径: "))
! @2 r6 V: e0 r5 x3 i - (initget 7) ; threadpitch 必须非零、非空、非负
8 `9 |, l/ @& n6 c, k& p - (setq threadpitch (getreal "3 K( f. _* ?5 ?- T$ w; L6 O
- 螺距: "))" F8 H) j2 W( L5 O/ z: x
- (initget 1) ; ptStart 必须非空
% y- a' s. i; c- m3 i) L - (setq ptStart (getpoint "! M) t6 ~0 C+ G7 V$ t
- 起始点: "))
3 r5 ^0 Z3 b b; [# W5 r - (initget 3) ; threadlength 必须非零、非空、非负
- ~5 z& c+ T' }, B - (setq threadlength (getdist "( \0 Q' O7 ]3 b0 {- q9 d0 r f
- 螺纹总长(Y方向): "))
9 ?. q2 \, @, c* [4 { - 3 a4 q+ Z" y- [* W1 ?1 U
- ; 对公制外径添加公差' g! U1 W O! ~
- (if (<= radmid 3) (setq order 0) ; 根据公制外径确定公差带中位置5 j% D3 l& Z% e% ?) a, n
- (if (<= radmid 6) (setq order 1)
" I9 g7 D% T. Q - (if (<= radmid 10) (setq order 2)
' ^( K1 c" m+ R - (if (<= radmid 18) (setq order 3)
' U; ^( N% ?+ O( c7 D0 t - (if (<= radmid 30) (setq order 4)
2 F1 _0 G) u! o2 B - (if (<= radmid 50) (setq order 5)
1 I( Y. T ^( T" c - (if (<= radmid 80) (setq order 6)& Y X* `+ g4 `7 k
- (if (<= radmid 120) (setq order 7)
, q: E1 A i8 W- _# Q" ?: b: s - (if (<= radmid 180) (setq order 8)6 w# W- ?$ F6 g' g3 @) Y$ j1 H( b
- (if (<= radmid 250) (setq order 9); o4 m( O1 N- P! u8 O. |
- (if (<= radmid 315) (setq order 10)
0 u q$ e2 z3 W" E - (if (<= radmid 400) (setq order 11)2 @2 @+ ?7 w2 f! t- j. K& J n; A
- (if (<= radmid 500) (setq order 12); {7 ~- k7 j( `
- )))))))))))))
/ x2 `! L! P4 {3 Q - 4 f, f5 f, o# _9 ^8 v
- (if (< threadpitch 0.25) (setq radmid (+ radmid (nth order 4H))) ; 根据螺距确定公差带
1 v6 {4 @$ @6 Y, u7 ~- R, ~. g - (if (< threadpitch 0.35) (setq radmid (+ radmid (nth order 5H)))5 {$ b" A4 k& y1 Y# s. W9 n
- (if (>= threadpitch 0.35) (setq radmid (+ radmid (nth order 6H)))
1 J% P5 j8 O' L# z0 |" q, Z# j B - )))
; U, N5 Q) ?1 v - ! `9 _9 n& H% H% s3 k, N
- (setq h (* 0.866025 threadpitch)) ; 计算齿高
8 C9 X# J, h. N3 [ - (setq radouter (+ radmid (/ h 4))) ; 计算外径6 n7 x/ E' i' J0 f5 }' Z8 ^
- (setq radinner (- radouter (* h innerdiafactor))) ; 计算内径
. W) x/ e/ v. H3 t5 t+ X - (setq threadangle (+ 30 0)) ; 计算齿顶角
) D2 ^3 \( H1 W- R; y* }3 W8 { - 5 O% b2 A. y2 J1 v6 D) z
- (auxithread radouter radmid radinner threadpitch threadlength threadangle ptStart) ; 调用绘制三维螺纹的子函数
; u& o! R! Y1 [1 m5 Y0 _2 E- p
# j, X; w) t& H+ h- (princ "
) s6 R* i' J% ]9 J5 V. S! f7 D - 三维螺纹创建完成")
& ]5 j# x7 n$ ?6 A6 g - (setvar "osmode" osmold) ; 恢复调用前的osmode系统变量值
. L0 }5 ], Z1 P; p) R& t - (setvar "cmdecho" ocmdold) ; 恢复调用前的cmdecho系统变量值* t* r: ^4 h4 c' u, N7 C. Y5 a
- (princ)& c& M; c6 t% f' b
- )
- w+ F2 m6 | R0 I% g* o5 _+ M& ] - ' c9 W a2 b1 J* y3 k( I( l% J
- (defun auxithread (radouter radmid radinner threadpitch threadlength threadangle ptStart / ttal pt1z ang pt1a
" K' l& K- p2 { - pt1az pt3a pt1b pt1bz pt3b pttmp1 pttmp2 pttmp3 pttmp4 pttmp5 pttmp6 pttmp7 pttmp8 pttmp9 pttmp10 pttmp11 pttmp12 tstmp startcone endcone)
! n) K1 C; G7 K4 P* s( Q2 ? - # f2 V% @' v3 L9 w |8 J8 t7 D4 M
- ;(command "undo" "begin") ; 开始undo步骤
& ]/ f8 O5 _+ O - / B! T2 ?# s) v* K
- (setq ttal (+ (fix (/ (abs threadlength) threadpitch)) 3)
( T8 g2 S/ f1 q4 R. L2 r - pttmp1 (list (- (car ptStart) (/ radouter 2.0)) (cadr ptStart) (caddr ptStart))
5 n% F8 j Z4 g" D. u( J2 Z$ ], j - pt1z (list (- (car ptStart) (/ radouter 2.0)) (cadr ptStart) (+ (caddr pttmp1) 1.0))
- _* a! u. C1 h% A0 D! u* A - pttmp2 (polar pttmp1 (/ (* threadangle pi) 180.0) 1)
* a$ v, O! n9 S2 H# C# F8 f7 d# ? - pttmp3 (list (+ (car pttmp1) radouter) (+ (cadr pttmp1) (/ threadpitch 2.0)) (caddr ptStart))
( ~& H" H) `$ T/ k2 H - ang (angle pttmp1 pttmp3)& {2 C2 g5 I) a7 Z3 \# G: v
- pt1a (polar pttmp1 (+ ang (/ pi 2.0)) threadpitch)
4 b/ [4 Z1 j7 q/ h- g$ k+ y4 u - pt1az (list (car pt1a) (cadr pt1a) (+ (caddr pt1a) 1.0))
+ Y% f7 p2 v s - pt3a (polar pt1a ang radouter)
: h' E$ S) B% p - pt1b (polar pttmp1 (- ang (/ pi 2.0)) threadpitch)
6 @# w6 N O7 m4 P - pt1bz (list (car pt1b) (cadr pt1b) (+ (caddr pt1b) 1.0))
& L7 z$ j I* e! w - pt3b (polar pt1b ang radouter), ^) G0 F3 N2 u x4 [: h6 R3 O5 G
- pttmp4 (polar pttmp3 (/ (* (- 180 threadangle) pi) 180.0) 1). g( ?: F7 L" F" H7 c6 G, f
- pttmp5 (inters pttmp1 pttmp2 pttmp3 pttmp4 nil)2 y& [. G& m+ h( }! _
- pttmp6 (list (car pttmp5) (cadr ptStart) (caddr ptStart))0 W i' ~1 b1 j
- pttmp7 (polar pttmp1 (/ (* (- 360 threadangle) pi) 180.0) 1)# I# Q7 X; j6 ~& r
- pttmp8 (polar pttmp3 (/ (* (+ 180 threadangle) pi) 180.0) 1). W, `$ u' x6 u7 O1 r: G
- pttmp9 (inters pttmp1 pttmp7 pttmp3 pttmp8 nil)
: o) R# O+ P& {. @ p' c/ ^2 ] - pttmp10 (list (car pttmp9) (cadr pttmp3) (caddr pttmp3))
5 ^# e) J3 q7 q% p; l) n - pttmp11 (polar ptStart (/ pi 2.0) threadpitch)
# W) O2 D/ Z1 a! | - pttmp12 (polar pttmp11 (/ pi 2.0) (abs threadlength))" `5 w, n. H( ?4 t& l4 y
- )
( S/ V6 y+ A3 u- P/ u
" Y) z5 B& t# O1 ]: z( C' T4 K- ;-------------------------------------------------------------------! L+ r) @ _9 Z: Z% z7 l. i
- ; 绘制两个倒置的并偏移1/2螺距的圆锥
, j3 S+ y) Y4 L! w - ; 这两个圆锥都以中剖面剖分
; {% l: @3 T& a3 Q& g7 g8 u: i+ l - ; 进行并集运算4 z; c6 y+ a7 k
- ;-------------------------------------------------------------------- l; P9 i# a3 `/ x. x& d8 J
- : L# A& V& U, J M! R8 @2 I
- (SETQ startcone "order")/ T% T/ C+ p z8 o( m
- (SETQ endcone "Y")
) V. Z& w# g% d5 m8 i8 l# S - (command "zoom" "w" (list (car pt1a) (+ (cadr pt1a) (abs threadlength)) (caddr pt1a)) pt3b)4 ]: z4 [3 K2 {! U$ O$ s
- / ^8 ~' L- c; H% k! g. e7 a% H
- (princ "6 X& @% n' A" w1 h
- 正在绘制三维螺纹，请等待")
* G( m! `" B3 B7 y' J5 o; K3 G - (command "pline" pttmp1 pttmp5 pttmp6 "c")2 e) z, G6 ? E) p( E z
- (command "revolve" "l" "" pttmp5 pttmp6 "")
) y4 q7 M- Q+ V - (command "slice" "l" "" pttmp1 pttmp3 pt1z pttmp5)
! W' T8 j/ @/ e) G# H: X! o - (command "slice" "l" "" pt1a pt3a pt1az pttmp3)
6 p* z/ b) Q$ g. ]# D' ?. b* I - (setq tstmp (ssadd (entlast)))
0 B, F, p$ H6 n+ v( W8 {% i9 j1 h - (command "pline" pttmp3 pttmp9 pttmp10 "c")
$ T$ C/ ~7 l( N6 a! W# \! n - (command "revolve" "l" "" pttmp9 pttmp10 "")( ?5 _4 g/ a. |+ e4 [1 q1 m* T$ F
- (command "slice" "l" "" pttmp1 pttmp3 pt1z pttmp9)/ C. q0 ^1 h2 ~1 w
- (command "slice" "l" "" pt1b pt3b pt1bz pttmp3)8 M- J8 p0 w3 G* S* w" x; R0 C( k) J' k
- (setq tstmp (ssadd (entlast) tstmp))
/ S; Y/ K3 H1 z$ @ - (command "union" tstmp "")
5 o3 e' A+ D$ f9 j
/ B5 O2 |4 D7 A( L- ;-------------------------------------------------------------------: ~) G: G5 A$ N7 w+ x) i0 u
- ; 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# n$ H- }$ s% V) T; z t
- ; 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; q3 M+ \: D# `' Q5 y
- ; 在最后一步被切除
[( `- o) n6 M4 Z6 n/ q - ;-------------------------------------------------------------------- j# y9 f2 I$ y& C
- 8 X# h8 O! K3 B9 Q v: g8 n
- (command "slice" tstmp "" "xy" ptStart "b")/ j; w0 Y) N0 U( ^+ ~$ b9 L7 s
- (setq tstmp (ssadd (entlast) tstmp))- J4 ^- e: }0 n* O8 a k
- (command "mirror" "l" "" pttmp1 "@10<0" "y")
6 @! L3 L1 |5 _- `2 W - (command "union" tstmp "")
. z" b# a, E. _8 h - $ ^! W; }- |9 R8 ^% E. \
- ;-------------------------------------------------------------------
" N3 n# Z, f! B/ W' n2 u - ; 螺旋进行阵列操作，然后再作并集（可能会耗费一定时间）) F3 a4 F5 M. i6 O
- ; 得到的实体再切除到指定的螺旋高度
) q! F4 U& z7 U# }7 H - ;-------------------------------------------------------------------
9 P" O; h1 N% f" S+ t# \' Q - v1 g3 D- W/ h' a
- (setq e (entlast))- | A% H9 ^% V& q& t
- (command "array" tstmp "" "r" ttal 1 threadpitch)
8 t5 y3 K$ o; W6 x - (repeat (1- ttal)5 }- s9 ~8 w0 r. M/ }& j; b
- (setq e (entnext e)
( P# {. Y I8 D0 {8 q - tstmp (ssadd e tstmp)3 v/ E4 S# Q# d+ q
- )% z5 @. |$ }) n( a$ j; f4 ~ J' u
- ) } T6 x2 p8 M4 O
- (command "union" tstmp "")
6 `3 r& z3 z/ D/ d2 ]2 q/ B - 2 r7 P: z" q; a7 B" u! t
- ; 若开始创建45度的圆锥
- b" ~! [& ]8 b% y( H7 J' ? - (if (/= startcone "order")
8 H3 w; w2 l( |2 ` - (progn (setq e (entlast))
8 E. o- L+ \7 K( K: ]- e - (command "cone" (list (car ptStart) (+ (cadr ptStart) threadpitch) (caddr ptStart)) "d" radmid "a" (list (car ptStart) (+ (+ (cadr ptStart) (/ radmid 2)) threadpitch) (caddr ptStart)))2 q6 M; f( H) c+ Z4 B4 J) M9 g
- (command "union" "l" e "")" h7 O% l2 R) U# R* k! `, z( j5 H9 t
- )
' ~9 R3 O" Z, V' u- E - )3 D; t9 X1 g: f F! \& q
- 0 k$ {7 D. m' A# A! _0 c
- (command "slice" "l" "" "zx" pttmp11 pttmp12)0 c0 v2 _/ `, B* z* G
- (command "slice" "l" "" "zx" pttmp12 pttmp11)) `( S& _; e2 n9 u# J% s3 p1 e
- (command "move" "l" "" ptStart (list (car ptStart) (- (cadr ptStart) threadpitch) (caddr ptStart)))
$ Y1 K9 [7 U: t' x( R0 u+ P/ D - 5 w' q' W; ^& W. n" ?5 T9 B8 h
- ; 创建最小直径的圆柱体，然后与螺旋作交集
- g6 N5 R% d% a# N+ F3 d2 u - (setq e (entlast))+ S) l4 f8 L- \* v2 \( l
- (command "cylinder" ptStart "d" radinner "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart))): x; M$ L% Q+ C3 R
- (command "union" "l" e "")! ` Y0 a1 Y8 d; _( T% H
- (setq tstmp (entlast))
! M7 R( b; ~0 ]8 w - ; B1 V& _2 e( V4 c
- ; 创建中空的圆柱体' U$ \ c' E' H# C5 [
- (command "cylinder" ptStart "d" radmid "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart))) ; minor dia
2 G3 H+ e* ^! L: f' a! \ - (setq e (entlast))
$ S2 `! ]- C8 ~
" N4 p9 e, ?+ U- ; 若最后创建45度的圆锥
* J# n3 \! T8 h$ n+ S - (if (/= endcone "order")
$ b3 r2 A2 d) V - (progn (command "move" "l" "" ptStart (list (car ptStart) (- (cadr ptStart) (/ (- radmid radinner) 2)) (caddr ptStart)))
+ V. ~2 m7 C, N0 a2 O1 {7 f' q - (command "cone" ptStart "d" radmid "a" (list (car ptStart) (+ (cadr ptStart) (/ radmid 2)) (caddr ptStart)))
7 Y! w5 S0 O6 z0 _, m( \0 U - (command "move" "l" "" ptStart (list (car ptStart) (- (+ (cadr ptStart) (abs threadlength)) (/ (- radmid radinner) 2)) (caddr ptStart)))3 M) R [3 |" \( a& R f
- (command "union" "l" e "") A5 Q" o: x; D+ y( m! K
- (setq e (entlast))
. r( v* E( @" f' ^0 H9 c- O - )
! [* U, L) _& D% w - )/ Z9 d$ R! G4 g' p
- 2 k% L+ S7 D& J, s# o
- ; 从大圆柱中减去小直径圆柱4 G; c/ V) F4 a- b# u3 p
- (command "cylinder" ptStart "d" (* radmid 1.5) "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart))), S7 K/ L+ ~0 b `) y
- (command "subtract" "l" "" e "")5 ` s/ f9 o6 ^ ^0 F5 ^
- (setq e (entlast))
* B5 h0 f7 v& G3 ^7 E2 K - 0 |! {& u# P! a2 E3 V
- ; 从螺旋中减去圆柱" e5 S/ a4 T Q+ v! X
- (command "subtract" tstmp "" e "")
' M4 S3 R( O: j* c% C4 n4 _) z4 y
1 y5 Z; w% H9 G; K! W0 c- ; 如果螺旋长度为负然后镜像" O1 a$ E, B$ o; b
- (setq e (entlast))- P. p# d' g1 ]. u4 I# z+ M
- (if (< threadlength 0) (mirror3d e "zx" ptStart "y"))
# S" G( @( B' X- k6 C( o4 W - * K) F- I8 a) k3 ]+ o" v `
- (command "zoom" "p")
7 }& |9 u# J6 H - ; (command "undo" "end") ; 结束undo步骤5 r" v" ^( @# N4 _; j) b/ ^
- )
" D- o3 _* u9 `% J/ V# T9 m% l
+ J! E- e% C) y; @- ;;;---------------------------------------------------------------------------------------------------------------------;! @# L" d4 j3 Y) q9 x; [6 r
- (arxload "geom3d" nil)
/ T; b" n+ o/ P# D; y - (princ "
4 E. u" n* U x, B4 u1 x+ n - 3DThread 已加载。 ")
' d0 I2 s% K, A5 A& k! T - (princ)3 V. `0 Y: f$ @. S* Z5 Y
! b* V& L, }0 P' h) B8 L! z9 z
7 F7 a6 E3 {/ U/ U' b% F5 u三、弹簧源程序
1 K8 a- Q6 A; C0 k" a2 o: H& |. n- (defun errMsg (s) ; 当命令执行时出现错误
) H" v: p h/ t - ; 例如用户按下了CTRL + C2 A9 i' t' r; ^8 g0 _
- (if (/= s "Function cancelled")
& c" n6 e6 E. \7 y5 @6 B! M/ b - (princ (strcat "6 o; ]/ q1 e# V# ~& Y, ]* s
- Error: " s))4 E0 D# r: d5 ?0 \
- )
6 p8 L9 u* }4 B- H - (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值" p% [1 r# k8 l" w
- (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值
" U. {% e" j% D4 O - (setq *error* olderror) ; 恢复旧的错误处理- A' x# B4 Z% F: {' j& Q
- (princ)
) v/ W# K( G/ r! G: P8 j3 g- E1 K - ). J- e: A$ ]/ K5 w6 k' c7 V
- 3 T ` y( g ]: C5 \# c t
- (defun spring (nRepeat cntPoint bhfac lr strad bvfac
) v& D; f1 d( s s! J- ] - / angle distnc tp aGrw dhGrw dvGrw Pi2 dv)$ l! c+ s( w$ ?+ ^% P% `. v# g
9 [) O! x3 J' F o- (setvar "blipmode" 0) ; 关闭 blipmode ! @1 q7 {/ j+ a7 `& [ t8 w5 P
- (setvar "cmdecho" 0) ; 关闭 cmdecho
0 _+ l" M" V5 H& \- | - (setq Pi2 (* 3.14159265 2)). a6 g8 k" U6 @
- (setq aGrw (/ Pi2 lr))
9 `, R' {* l7 c) s J p - (setq dhGrw (/ bhfac lr)). n! L' p# i- W5 p B# Z
- (if bvfac (setq dvGrw (/ bvfac lr)))
5 U; O5 s1 I x, ~ v% B - (setq angle 0.0)
) f' c% s) H, V' b C' u - (if bvfac j" t5 q: t6 w* D, O' U
- (setq distnc strad dv 0.0)( ^* Y+ X7 o# K: t. U7 a3 D1 H1 v
- (setq distnc 0.0)7 x. L' C% H6 Y' ], i5 [
- )8 I5 a Y) u5 g! y$ ~; k1 n$ L
- (if bvfac * ~6 e+ u9 S( i8 H7 Q8 p
- (command "3dpoly") ; 开始绘制弹簧% K. g0 k/ o! i3 e2 r, N
- (command "pline" cntPoint) ; 从基点开始绘制弹簧
, E( J4 e( S6 B, {( O - )
5 D) X" V, m5 y, b' r8 W2 ?; k! M/ N5 G- j' x - (repeat nRepeat
8 r( Q( I# _* ]: P, `/ a2 A - (repeat lr
* H+ ?2 w' I, ^6 p2 ~1 I& N - (setq tp (polar cntPoint (setq angle (+ angle aGrw))" f: a2 V/ G/ p+ y+ O
- (setq distnc (+ distnc dhGrw))1 N) v, K% O* u6 s/ d
- )
6 z2 ?( f; E9 N6 r$ V, h0 U - )
6 u2 N" Z: u1 D ^6 }$ m% c - (if bvfac
2 o; `. v( t) }7 s P' U - (setq tp (list (car tp) (cadr tp) (+ dv (caddr tp)))( E$ N6 w n9 y
- dv (+ dv dvGrw)( ], L+ d2 c2 H' {$ |
- )' G2 U( p0 h( D6 j
- )) j/ n3 @: r! L/ y" j- O2 A# R
- (command tp) ; 继续输入下一点
0 {+ |0 j8 T8 Y( r2 m) v& a) } - )
7 U3 h3 C+ g: D5 t - ) 7 i7 m& ^+ ?* N J' l$ W( b6 M4 s
- (command "") ; 输入结束
0 R) t% u" o$ E5 E - (princ)
) D5 `) z! Z: B M! a5 F6 ~3 o7 V - ) ( B# {5 R* @0 \* q0 i* w
, L) O+ K8 u4 J6 K: M: ^+ t- ;;;2 K+ b& c+ m' z, @& L
- ;;; 生成三维弹簧函数调用接口
. m/ n, o/ P+ k( ?# G) K - ;;;
$ R: j5 r5 ^ d9 z; L. Z0 d9 y$ h% } - : F* t. }' C7 x- Q( k$ \
- (defun C:3DSPRING (/ olderror cmdch blpmd cntPt RottCnt horiGrw vertGrw bgnRdtn ptCntPerCircle) 4 O# b0 g5 b6 {7 J& U* R
- (setq cmdch (getvar "cmdecho")) ; 获取cmdecho值，以便调用结束后恢复; q: l s% F& \( j, }: T/ u
- (setq blpmd (getvar "blipmode")) ; 获取blipmode值，以便调用结束后恢复
+ Q& }1 L+ H/ x W' o - (setvar "cmdecho" 0) ; 关闭 cmdecho
! l5 u& p" T( P1 F; R' Q% j8 Y - (initget 1) ; cntPt 必须非空6 ?9 }' n3 p. e$ h9 j
- (setq cntPt (getpoint "9 c& }3 j! @7 b% Q
- 请输入底部中心点: "))
' y9 H) A% ]# G& ^9 x5 ] - (initget 7) ; RottCnt 必须非零、非空,不可忽略
% t, Y( x+ I6 A - (setq RottCnt (getint "& n" D: i0 z, ]3 {% a4 x: Q8 _
- 旋转的圈数: "))6 c) r, S0 G5 e: O& v
- (initget 7) ; bgnRdtn 必须非零、非空,不可忽略
3 o: w& o$ C1 G) f8 b2 }$ k - (setq bgnRdtn (getdist cntPt "% o/ _0 J" ~# n: _( K! s: g8 b" |
- 起始半径: "))
# b2 G; n6 v% u; C" X9 ? - (initget 1) ; cf 必须非零、非空! _5 N- ?* n; j5 o) u0 Q
- (setq horiGrw (getdist "
, G# k4 `' A2 l& J9 Y- r6 w - 每一圈的水平增长距离: "))+ v9 L; f$ V: F' @: g$ A. E
- (initget 3) ; cf 必须非零、非空1 x' H; N% _( M. q |6 p
- (setq vertGrw (getdist "' M: q' o6 J; D$ }2 n$ ~- r+ o
- 每一圈的垂直增长距离: "))4 U$ J* [" b; W! W5 \: B$ E( E5 ]
- (initget 6) ; ptCntPerCircle 必须非零、不可忽略; d& t6 ?. P; h8 q
- (setq ptCntPerCircle (getint "4 v4 h& \3 F. {/ a. }
- 每一圈的插值点数<35>: "))
- B" C, C x# N - (cond ((null ptCntPerCircle) (setq ptCntPerCircle 35))) * h3 I1 i9 u* p
- (spring RottCnt cntPt horiGrw ptCntPerCircle bgnRdtn vertGrw)
, I& G/ y8 J! d& _# F; a$ | - (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值
, I- x W+ g! J3 \2 o5 M' Q0 f - (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值
x3 V8 l- ^4 Y8 J - (setq *error* olderror) ; Restore old *error* handler
4 S8 W2 q o: Z3 b) Q/ m - (princ); Q" _4 W% q& x6 \& _- N3 I6 T M
% L- }* [4 E# G" \( @* |- )
F* f4 A5 m6 C! G
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发表于 2006-4-14 13:10
发表于 2006-5-5 10:43
