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6 v( s4 U- i6 Y7 D; x# v
+ L8 k0 a! `3 e6 Q" L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:
5 C& v- d# t- E- y2 y3 d一、齿轮轮齿渐开渐开线; I( T8 ~5 M& u' a4 \! M
- 9 n$ [% w; Q& e( i0 S! S& v
- (defun c:gear(/)3 Z0 C$ ^) z+ ` C; \
- (! {& ^: b* k; p4 Z7 I9 o$ b
- setq
. M( @+ \' k0 M. C* P% b" f3 Q - p0 (getpoint"输入齿轮中心p0: ")
7 g3 P/ W k- }* h$ h. Z8 P1 A - m (getreal"输入齿轮模数M: "): v# k. i+ }% C! }1 M
- z (getint"输入齿轮齿数Z: ")7 e8 A! J ]- {5 Y, C6 c' R0 e5 {9 G
- ha 1+ p4 N4 ~! y% P9 @8 t
- c 0.25
! z; t0 ]8 [: u% i% W6 {. b* z, S5 q - a (/ pi 9)8 C' ~: H8 k3 K0 Z! X5 T
- ra(/ (* (+ z (+ ha ha)) m) 2)
) h9 U, ]' y' D4 u8 p" F% C - rf(/ (* (- z (+ (+ ha ha) c)) m) 2)# W+ z2 Y- \7 x! e+ d5 ^0 `& f
- r(/ ( * m z) 2)! y7 o, D3 @/ B8 x) m2 N
- rb ( * r (cos a))+ m; e: ?0 e0 j
- ri rb( Y. J9 V; o9 Z& p3 q% z
- ang 0
5 ^) @1 ?& J8 M1 Q# t& L - g (polar p0 ang rb)
% k5 {. U4 }& a3 ^ - )
8 g/ W7 G# L u# }+ H8 N% d7 o* q8 q - (command "circle" p0 ra)
" X! d% M: b5 J3 n - (command "circle" p0 rf). q+ ]/ j# ^8 u* ^
- (command "circle" p0 r)* l5 [+ u* x) x3 i, i
- (command "line" g)
4 y' C& M& F1 `1 p+ t! f- }( K -
, F6 }# i# L5 M0 k/ w - (while (< ri ra)! J( G& r; X! m+ `
- (setq
, r; f4 t; @2 u) o8 a - ang ( + ang(/ pi 360))
+ b8 }3 O: h; w: X - ri ( / rb (cos ang))
! K1 t+ k) n- Q. B - cta ( - (/ (sin ang) (cos ang)) ang). L" e+ z5 G% _9 ?' u
- g(polar p0 cta ri). P* ]0 F" X* u8 l5 L- P4 F8 {! |
- ) D+ l$ \& r# J+ s1 `+ @* E' `
+ ^, O* R/ B3 q. S- (command g)1 E& n: h* t9 J( R) c+ k+ o1 J
- )4 T) { r9 J/ f, u
- (command )
9 l& U# b; ?! R$ u% A - )/ L2 A9 F3 |+ @+ m# r; P
复制代码
6 ]3 L0 `" v, O2 e: `" Q k- @( ?+ e b$ p! w% ]/ O) j, R
3 f6 I, |! \2 O ]6 j二、螺旋源程序
$ ~. B! F; u2 }' R
2 N8 U( u- }2 t) ?- (defun errMsg (s)" `- ~3 b. R$ |1 @
- (if (/= s "function cancelled") (princ (strcat ", F% z2 d0 G% ^4 S
- Error: " s)))9 t) v& a. c" V5 I
- ; 当命令执行时出现错误
) X3 N" d, `% ^: T: I$ i - (setvar "cmdecho" ocmdold) ; 例如用户按下了CTRL + C
2 h: L0 |) f& G3 |* ]5 O/ F - (setvar "osmode" osmold)
+ Y0 i3 f; ~* H7 s - (setq *error* olderr) ; 恢复旧的错误处理- o* c" m6 Q) C$ X
- (princ)
6 T; ?; W2 v6 E' w' m; O - )
+ F8 i% |+ h6 v; `! ]+ E
$ @' {; T. b& v0 q& T- (defun c:3Dthread (/ radouter threadpitch threadlength threadangle
! u& d) V) A' V7 u6 B. r8 f p7 J" U - ptStart innerdiafactor radmid radinner ocmdold osmold 4H 5H 6H h6 g6)
& l2 Z9 h4 e0 `& L& S - ;-------------------------------------------------------------------6 S2 o7 U6 ]; E% f6 N1 J" Z* a
- ; 获取公制外径大小、螺距总长
2 V5 s3 q' h* q - ; 然后计算一系列几何点' e9 U& k' A+ y D
- ; 并且关闭对象捕捉、命令回显
) d" t0 N; G% F1 o2 l% q3 n - ;-------------------------------------------------------------------
* M( Z& H( ^7 r. F) m: h; 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)) 2 o R" F' q. m/ V# f$ S7 E/ 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)) 8 d, ]# @0 ]& t7 P
- (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)) : `& k) ]. x# |. t
- (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)) * o5 U6 ^# [8 F2 M; t& ?$ J8 W
- (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)) & x- e: I. @1 E. M$ O. i
# E' v" P6 P) a1 r; O6 \7 N: U8 _# }! N- (setq osmold (getvar "osmode")) ; 保存调用前的osmode系统变量值
4 ^. n/ g7 |: ^7 o3 D9 q8 q- U - (setq ocmdold (getvar "cmdecho")) ; 保存调用前的cmdecho系统变量值, K7 K. z# M. `3 L
- (setvar "osmode" 0) ; 关闭对象捕捉 ( m6 B \( q, I3 H4 N6 k$ P
- (setvar "cmdecho" 0) ; 关闭命令的回显
! T/ l. F! M! ~6 t4 \1 c6 ]& f
; S9 F4 x ?$ z o( t- (setq innerdiafactor 1.5) ; 设置内径系数
' y( U& B. a0 [, g - (initget 7) ; radmid 必须非零、非空、非负
: f, [8 b+ |9 F- t9 i - (setq radmid (getdist "0 q: d5 k- G, U& U" {" ]3 v
- 公制外径: "))
( f% d, y* C, ?/ l1 p ^# X - (initget 7) ; threadpitch 必须非零、非空、非负, l6 p. a/ S1 o3 Y& }5 w
- (setq threadpitch (getreal "
2 h6 X4 ~' D9 x* ? X6 j4 p; c2 e - 螺距: "))7 R; i6 E% k7 A9 ~% } ? p
- (initget 1) ; ptStart 必须非空
0 W2 e+ o. ~2 l a% U9 o - (setq ptStart (getpoint "8 A( g$ c# h/ z
- 起始点: "))
1 `& T% A, b8 K6 I" Q* e% q5 Q - (initget 3) ; threadlength 必须非零、非空、非负( q( J! P' y( \3 j9 g8 {" B
- (setq threadlength (getdist "
( _0 \: f5 ~6 Y: s - 螺纹总长(Y方向): "))! _: q* \; S, [; X
- * h ~" J. ]0 H% ^
- ; 对公制外径添加公差' u! w7 |- S* i! N! C M3 b6 i1 o4 C
- (if (<= radmid 3) (setq order 0) ; 根据公制外径确定公差带中位置8 C6 R( x% e2 j8 q/ P# y
- (if (<= radmid 6) (setq order 1)9 @1 K6 E6 y @' Z& [- m- T
- (if (<= radmid 10) (setq order 2)
0 M3 ^4 }- @% h7 i7 L6 e - (if (<= radmid 18) (setq order 3)& z( i- d$ ~7 K( v6 c% N
- (if (<= radmid 30) (setq order 4)6 V. j7 U( O* Q0 k
- (if (<= radmid 50) (setq order 5)' f) \7 ^, W6 Z, s/ S
- (if (<= radmid 80) (setq order 6)
) S5 G0 x u5 ^9 j. e. ^ - (if (<= radmid 120) (setq order 7)$ Q6 X' \, _3 e S
- (if (<= radmid 180) (setq order 8)9 s: A( m& ]1 V& k3 }% P
- (if (<= radmid 250) (setq order 9)& _. y8 m8 A ]* Z# f5 K& u
- (if (<= radmid 315) (setq order 10)
- e- d0 T0 f% q: m' n* q - (if (<= radmid 400) (setq order 11)/ i% M; t# y3 H x+ w& m4 V$ T
- (if (<= radmid 500) (setq order 12)) r" Z) ^% O1 s) N3 d5 K9 B. r
- )))))))))))))2 e( U7 r& g: i$ p0 N! o5 v
- ' D' {8 l9 b, U z# Y: C
- (if (< threadpitch 0.25) (setq radmid (+ radmid (nth order 4H))) ; 根据螺距确定公差带% n& K% D$ S0 w5 Z
- (if (< threadpitch 0.35) (setq radmid (+ radmid (nth order 5H)))
, q" `! v4 t9 h% m - (if (>= threadpitch 0.35) (setq radmid (+ radmid (nth order 6H)))) [: |% |. J3 y9 U P5 \
- )))0 ?3 F. C: O" V, G6 E$ z6 T4 L
- " I' J$ q+ f C) F
- (setq h (* 0.866025 threadpitch)) ; 计算齿高0 Q! d$ C$ O2 }' Q- D6 O, `) p
- (setq radouter (+ radmid (/ h 4))) ; 计算外径6 r$ c- X8 K1 @9 C! L8 _
- (setq radinner (- radouter (* h innerdiafactor))) ; 计算内径
! u& _8 b: B- z6 C - (setq threadangle (+ 30 0)) ; 计算齿顶角
" V# |$ q) r4 j0 { - 7 h( R) [ ? S. j
- (auxithread radouter radmid radinner threadpitch threadlength threadangle ptStart) ; 调用绘制三维螺纹的子函数, P4 k! d' @( U* g) a* j7 b
1 n e# D# {! u! v* R8 P- (princ "
- x B. m# k$ c4 B" S# K& y - 三维螺纹创建完成")% m' ~+ Z2 T: B& P( u
- (setvar "osmode" osmold) ; 恢复调用前的osmode系统变量值
, f4 B9 h6 B; n1 J: X+ f) H - (setvar "cmdecho" ocmdold) ; 恢复调用前的cmdecho系统变量值
6 {4 e% t, Z* G# G1 F3 o% }: ` - (princ)
, X. ~& e' N% R; I: ~$ e - )* h- {* Q) r. C' w# ~
- 9 F7 Z% j& d7 m [) S" n# b _9 ]
- (defun auxithread (radouter radmid radinner threadpitch threadlength threadangle ptStart / ttal pt1z ang pt1a5 h8 ~! c1 q2 W- L& X! C
- pt1az pt3a pt1b pt1bz pt3b pttmp1 pttmp2 pttmp3 pttmp4 pttmp5 pttmp6 pttmp7 pttmp8 pttmp9 pttmp10 pttmp11 pttmp12 tstmp startcone endcone)
6 y4 A6 C# ~; A# {. S - + J) |, `2 k) P N! O- w
- ;(command "undo" "begin") ; 开始undo步骤3 D# e# @$ ?$ a- _4 N9 C/ W
7 D& G: a5 p5 F" L! e9 F# y- (setq ttal (+ (fix (/ (abs threadlength) threadpitch)) 3)
& ]( ~+ {9 `& h+ \; s! b1 x) Z: s( X - pttmp1 (list (- (car ptStart) (/ radouter 2.0)) (cadr ptStart) (caddr ptStart))
0 f9 n! N B; A - pt1z (list (- (car ptStart) (/ radouter 2.0)) (cadr ptStart) (+ (caddr pttmp1) 1.0))
* f6 \1 v1 @, r$ A; y1 ]* u. A5 F - pttmp2 (polar pttmp1 (/ (* threadangle pi) 180.0) 1)/ J8 S2 E$ c( S& {% Y6 M0 w
- pttmp3 (list (+ (car pttmp1) radouter) (+ (cadr pttmp1) (/ threadpitch 2.0)) (caddr ptStart))$ x8 E; T( Y! z( J
- ang (angle pttmp1 pttmp3)
+ j4 F+ v! j1 z; X" f- K: c% s$ H - pt1a (polar pttmp1 (+ ang (/ pi 2.0)) threadpitch)
$ { A/ u& F* _( v - pt1az (list (car pt1a) (cadr pt1a) (+ (caddr pt1a) 1.0))$ e8 x# X# q- \7 [+ h, Y- Y8 M
- pt3a (polar pt1a ang radouter)
3 }, S7 V6 V9 }) e$ t - pt1b (polar pttmp1 (- ang (/ pi 2.0)) threadpitch)9 b! P2 |2 j- j# ^5 M3 g' h$ m
- pt1bz (list (car pt1b) (cadr pt1b) (+ (caddr pt1b) 1.0))
& l3 b, v9 e, S5 c - pt3b (polar pt1b ang radouter)' P$ |/ W, C, W' O+ W3 j, L
- pttmp4 (polar pttmp3 (/ (* (- 180 threadangle) pi) 180.0) 1)& V6 R6 o1 Z+ t T
- pttmp5 (inters pttmp1 pttmp2 pttmp3 pttmp4 nil)/ S! Z( U5 D+ h( k
- pttmp6 (list (car pttmp5) (cadr ptStart) (caddr ptStart)); d$ V2 H# f! h: f9 R: T
- pttmp7 (polar pttmp1 (/ (* (- 360 threadangle) pi) 180.0) 1), Y2 u& O% L, D2 `, z
- pttmp8 (polar pttmp3 (/ (* (+ 180 threadangle) pi) 180.0) 1)
3 l( C: m+ s/ W) B i/ x$ p - pttmp9 (inters pttmp1 pttmp7 pttmp3 pttmp8 nil)
9 O; }* u3 v/ g! w& |+ U8 u - pttmp10 (list (car pttmp9) (cadr pttmp3) (caddr pttmp3))5 ?2 Y! R& P# Z7 S- z8 S! S0 B
- pttmp11 (polar ptStart (/ pi 2.0) threadpitch)
& ?* y( D$ E! a* \9 L - pttmp12 (polar pttmp11 (/ pi 2.0) (abs threadlength)). T$ c' `9 b% O5 Z0 B. ?. w
- )$ O( B w+ q3 K8 k- }; U
- # \( ?4 p+ |' X
- ;-------------------------------------------------------------------
! r+ U( p3 ?3 @ - ; 绘制两个倒置的并偏移1/2螺距的圆锥9 j3 T' R' K! W) v$ e! m e
- ; 这两个圆锥都以中剖面剖分
) \/ J4 ^3 O! [& d4 T$ i - ; 进行并集运算# L8 C$ D1 ~# X5 Y
- ;-------------------------------------------------------------------
6 E& P6 s4 g' O5 b4 M+ q - K; [) x# U4 Q
- (SETQ startcone "order")9 i; m* H9 Q) l& W. k& a/ u
- (SETQ endcone "Y")
- j" y; P% t {. L% k% \# A4 M, N - (command "zoom" "w" (list (car pt1a) (+ (cadr pt1a) (abs threadlength)) (caddr pt1a)) pt3b)7 h1 v9 W0 h* C: t5 m
/ V' A$ K4 y; p s+ @- (princ "
2 W) D8 t1 f% }6 B; c+ u8 I - 正在绘制三维螺纹,请等待")
3 Z% L* }4 p* r) w - (command "pline" pttmp1 pttmp5 pttmp6 "c")
u+ ~# t7 S5 z- `; Y+ z - (command "revolve" "l" "" pttmp5 pttmp6 ""); O3 T3 D: K0 ^* t; l3 [$ D: P
- (command "slice" "l" "" pttmp1 pttmp3 pt1z pttmp5)
; ~3 ]+ L) C& q0 |6 |1 M - (command "slice" "l" "" pt1a pt3a pt1az pttmp3); C/ b# i2 p! Z, @$ m$ S$ H1 T
- (setq tstmp (ssadd (entlast))). D7 J7 | p5 e5 P* h9 V' w7 P% p
- (command "pline" pttmp3 pttmp9 pttmp10 "c")
, H, J8 { |% d# [ - (command "revolve" "l" "" pttmp9 pttmp10 "")
' d2 n& [/ }! k" ^4 n' | - (command "slice" "l" "" pttmp1 pttmp3 pt1z pttmp9)
$ C# k! z1 V/ S" c3 q - (command "slice" "l" "" pt1b pt3b pt1bz pttmp3)4 m7 s! c r) P3 h3 {
- (setq tstmp (ssadd (entlast) tstmp))2 e1 o! u) ^7 J4 Y; K
- (command "union" tstmp "")# z+ b, I! Z0 Y! [- F4 \! y
- ! l$ e j3 N' y( {$ I
- ;-------------------------------------------------------------------
: t4 ~- H2 k) \, H( 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
! U4 l: m* {- X+ E; I8 h* G6 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
* e4 D8 S5 O C9 X! V! V+ K$ f: N - ; 在最后一步被切除! q8 {' c- Q$ J. P& C6 D
- ;-------------------------------------------------------------------
4 r& Z' [8 a' k0 p; E
/ X2 n, ]" i( D3 z2 H- g- (command "slice" tstmp "" "xy" ptStart "b"). h1 |4 ^) ~5 r; @& E
- (setq tstmp (ssadd (entlast) tstmp))' W2 B2 D% k X' M
- (command "mirror" "l" "" pttmp1 "@10<0" "y")) F9 v7 g" r! g
- (command "union" tstmp "")+ b" u& m5 Y+ |" w
; G2 h1 d! A$ ]+ U; D, A: ^7 p- ;-------------------------------------------------------------------
+ }6 I6 w7 Q9 Y" K3 t: @* y1 Q - ; 螺旋进行阵列操作,然后再作并集(可能会耗费一定时间)
. o2 M1 F* s" B - ; 得到的实体再切除到指定的螺旋高度
3 B2 v7 f. ~% ^: o! ^7 U2 K5 P - ;-------------------------------------------------------------------
! j5 s* h. [3 U" j4 T. D) L
2 [5 R. b7 D: o0 g( p5 ?5 F- (setq e (entlast))4 S! r; [2 H& w% W X
- (command "array" tstmp "" "r" ttal 1 threadpitch)
( t7 { d% y# A - (repeat (1- ttal)1 f! \% V) V# g( y( g7 D) s% a
- (setq e (entnext e)
* x' [& u- C2 q - tstmp (ssadd e tstmp)/ ^. R8 b& s0 x5 n% s! B) M
- )
6 @* O' I1 H. Z - )
3 H" O& V1 \) d - (command "union" tstmp "")
; t& K5 C3 G6 u& c* x& k7 r - 9 }: d+ M0 U$ @/ l
- ; 若开始创建45度的圆锥
, P- I3 I: @4 {' x& l - (if (/= startcone "order")
- ?, y8 {& p* ? - (progn (setq e (entlast))
) @7 e: n3 u. {+ Y: a4 \ - (command "cone" (list (car ptStart) (+ (cadr ptStart) threadpitch) (caddr ptStart)) "d" radmid "a" (list (car ptStart) (+ (+ (cadr ptStart) (/ radmid 2)) threadpitch) (caddr ptStart)))
* A( y3 c4 w I9 @# ~ - (command "union" "l" e "")
8 w# l, o! O! M - )" C1 @1 f2 h- ^7 J' e0 J
- )
/ M) W4 B. ]* }* O2 L7 N( ^, N0 w! u: a
( B, r# ?# k% d4 Z! ~! E- (command "slice" "l" "" "zx" pttmp11 pttmp12)# S# E$ E) _$ k& P
- (command "slice" "l" "" "zx" pttmp12 pttmp11)) S! W. y7 F8 r: I# W) [
- (command "move" "l" "" ptStart (list (car ptStart) (- (cadr ptStart) threadpitch) (caddr ptStart)))
/ z8 p1 N% s% ^+ q - 3 `+ |. M. L: [# M
- ; 创建最小直径的圆柱体,然后与螺旋作交集
R& ~5 L" {" f# N5 X - (setq e (entlast))& \* m2 i8 m5 Z8 s6 ?+ `
- (command "cylinder" ptStart "d" radinner "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart)))
/ J1 o& J1 c' d, t6 J" ] - (command "union" "l" e "")& b9 D- M7 O" ^4 ]/ E9 P
- (setq tstmp (entlast))! K# K# T8 }& X1 Z! |" C* x
- ' Y, z& Q& S* Q( i; A$ v; f( F* P
- ; 创建中空的圆柱体
* v$ N8 C4 E$ R/ |1 \3 K - (command "cylinder" ptStart "d" radmid "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart))) ; minor dia
& e. R3 Z; b7 y0 H - (setq e (entlast))
3 f& C# R6 i. l2 c! }) Z& x - , t4 |- W# u7 p& Y* W$ a1 H/ A
- ; 若最后创建45度的圆锥/ Q, r$ s; b2 m$ ?6 ^
- (if (/= endcone "order")
" J0 d+ j* e3 b X' m# J, ] - (progn (command "move" "l" "" ptStart (list (car ptStart) (- (cadr ptStart) (/ (- radmid radinner) 2)) (caddr ptStart))) / a+ D( J' d3 {
- (command "cone" ptStart "d" radmid "a" (list (car ptStart) (+ (cadr ptStart) (/ radmid 2)) (caddr ptStart)))
; i& I* Y. b" } - (command "move" "l" "" ptStart (list (car ptStart) (- (+ (cadr ptStart) (abs threadlength)) (/ (- radmid radinner) 2)) (caddr ptStart)))8 ?# f/ M. A. ~; t
- (command "union" "l" e "")
* |3 Y8 x. H- R5 @' D: E - (setq e (entlast))
8 Y* |" S' _: ?: {) a- Y! Q - )8 l3 m5 H4 E- J/ n' o( y% w
- )' Y5 U# O6 Z; Y5 v5 l/ P7 D& c
' @+ D2 p9 s6 H4 U1 N- ; 从大圆柱中减去小直径圆柱" W3 z' w: k8 x8 ]. |7 c$ C
- (command "cylinder" ptStart "d" (* radmid 1.5) "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart)))
' R; i7 J- F q* c, k1 ^1 t$ C - (command "subtract" "l" "" e "")
/ O @1 m1 M! m `) @ - (setq e (entlast))3 W6 W4 Y. y: l) L
- 8 X' K. N: `2 B* f# t
- ; 从螺旋中减去圆柱& l( A4 e/ {8 n' _
- (command "subtract" tstmp "" e "")
- L( K1 E" E( E4 A- U- D - 5 t, n6 q' p4 z. k ^, O' u
- ; 如果螺旋长度为负然后镜像
3 K3 P6 b" H: k& C) k- Q! |+ B# o - (setq e (entlast))& l$ _" v0 ]6 R2 k6 p7 M* m/ A5 M7 O) o
- (if (< threadlength 0) (mirror3d e "zx" ptStart "y"))
$ ^2 z' D c' z8 l
- j- h; I# {% h, p5 h- (command "zoom" "p")
- A: w# D# J) M; r- a2 i7 g0 ] - ; (command "undo" "end") ; 结束undo步骤8 I2 i0 u# i' N2 `5 ^, n( s
- )
. A: S- h0 w8 i- L6 T! z - 6 i) H) z! i; n, V) o; p. q1 L4 C2 m
- ;;;---------------------------------------------------------------------------------------------------------------------;" E7 q2 }4 [5 q; h: U1 T
- (arxload "geom3d" nil)9 ]. h2 z, `/ I+ |
- (princ ", u% b2 T B" l* r
- 3DThread 已加载。 ")
0 q, Y$ @( O. n5 I - (princ)2 u# `0 \) P" a( a( @/ M7 O
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三、弹簧源程序
# M( ~! f9 d y+ J3 K0 A: Z- (defun errMsg (s) ; 当命令执行时出现错误 : Z8 I4 M; {- t b: @$ d7 H
- ; 例如用户按下了CTRL + C1 L: T1 j1 y# h" M8 }8 d* s
- (if (/= s "Function cancelled")
6 _; K! K O: y7 d4 y7 t& t - (princ (strcat "
% {6 n" c; S3 G0 ~8 t - Error: " s))
! d m' L1 B3 r i% }# Z! | - )
! S, t# F- {6 L0 `$ O3 \4 k - (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值: U! Y" [# J( H% `( t
- (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值
2 P1 y) O2 ?; x - (setq *error* olderror) ; 恢复旧的错误处理( r% p' E' J( K7 N r* I( K
- (princ)% ^: O( \3 z# B P7 U5 N+ U
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- (defun spring (nRepeat cntPoint bhfac lr strad bvfac% M; }! |0 o1 A) t' K. C: I4 K0 o
- / angle distnc tp aGrw dhGrw dvGrw Pi2 dv)- }2 l& X' u7 G# B1 s
( c1 X* ~1 m( e% ~; N4 J- (setvar "blipmode" 0) ; 关闭 blipmode : T* I& g8 g3 a$ P
- (setvar "cmdecho" 0) ; 关闭 cmdecho
" T3 t$ E# h$ S$ B9 b! o1 W - (setq Pi2 (* 3.14159265 2))4 c0 b N# j9 b
- (setq aGrw (/ Pi2 lr))/ T. t) r! y* v3 ?
- (setq dhGrw (/ bhfac lr))$ _& |1 L7 D; k4 t% j0 Z/ h
- (if bvfac (setq dvGrw (/ bvfac lr)))
8 u$ e6 m0 N5 S/ d, X - (setq angle 0.0)+ p' }& X. v# d: L' p
- (if bvfac3 ?, R9 w4 ]: X5 C# g: S
- (setq distnc strad dv 0.0)
0 n, N7 _( w0 ^ - (setq distnc 0.0)( y6 x& w* h' l, v: @/ G
- )
( n' u, ]1 K6 I2 t1 r: P - (if bvfac
6 |+ E# t, C% C* z# b) S - (command "3dpoly") ; 开始绘制弹簧
1 e {- m$ r+ N7 V% s1 M& P' r - (command "pline" cntPoint) ; 从基点开始绘制弹簧
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7 h) s* u2 q; R/ ]7 D! D9 C - (repeat nRepeat p! L# L4 Q# }) H
- (repeat lr
, r& v- w. X6 @6 J' S - (setq tp (polar cntPoint (setq angle (+ angle aGrw))
( U: Y& X! u6 J7 m! _$ B - (setq distnc (+ distnc dhGrw))8 e) m' m8 ~2 |' b; b* e2 e
- )6 x) Y/ `6 |# V3 Z& s& X( G$ G7 q9 V
- )
! O9 q X. T3 O& H: \4 i - (if bvfac
: J$ e" {6 Y& a. d) i - (setq tp (list (car tp) (cadr tp) (+ dv (caddr tp)))
* M; C# C: d( Q1 U - dv (+ dv dvGrw), B( z7 I% x. W/ h: ?( A, o
- )
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2 x# C8 S0 d1 v n4 m - (command tp) ; 继续输入下一点! S. X) A( A, {' C4 p$ ~- C8 @4 D$ a
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- ) % K/ s! U P! c* q
- (command "") ; 输入结束
# U L, l# [+ W) _5 [- s( Z f - (princ)3 Y9 ^( o% E( B" g. h, N L
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% S) r( `+ S5 A- ;;;
7 a0 m# @+ }$ L! d4 M - ;;; 生成三维弹簧函数调用接口
1 j# y: D; W4 P# e - ;;;. b& }- |$ V+ X. Z
- n0 A: E2 J' H7 X7 S- (defun C:3DSPRING (/ olderror cmdch blpmd cntPt RottCnt horiGrw vertGrw bgnRdtn ptCntPerCircle) ! N9 H1 ?+ r6 n' @4 r! U
- (setq cmdch (getvar "cmdecho")) ; 获取cmdecho值,以便调用结束后恢复
' g( a% d- _- O1 i! W4 A; t - (setq blpmd (getvar "blipmode")) ; 获取blipmode值,以便调用结束后恢复5 c6 @: n' y5 T7 `; y$ w/ K+ X5 t |
- (setvar "cmdecho" 0) ; 关闭 cmdecho 9 A7 C( U5 Y1 x' ~/ I* l6 B
- (initget 1) ; cntPt 必须非空
x9 {6 p0 n2 |$ ]* r* J - (setq cntPt (getpoint "- C r) `! O% H/ |5 j7 H
- 请输入底部中心点: "))
A. ?( ~& v7 j - (initget 7) ; RottCnt 必须非零、非空,不可忽略
; A# y" r( I# T# {) m+ ]) U - (setq RottCnt (getint "& E5 S* l, i. l$ |5 }- {( c
- 旋转的圈数: "))2 c6 I' a- o; s P% T
- (initget 7) ; bgnRdtn 必须非零、非空,不可忽略
( j5 P& V" k2 h4 C3 [1 {; j# b6 V - (setq bgnRdtn (getdist cntPt "5 L M" R2 r; e
- 起始半径: "))- J* z: i/ z# A9 t( A' _% l
- (initget 1) ; cf 必须非零、非空
9 C& [5 i: s& ?9 [- K5 i - (setq horiGrw (getdist "' V8 F, A: F+ Z6 C* o
- 每一圈的水平增长距离: "))3 \" l6 z) I2 l8 `$ f- m; \
- (initget 3) ; cf 必须非零、非空
3 m% C, f$ J, A) s5 _. T - (setq vertGrw (getdist "
( X: |/ S- s! c1 B5 M5 \ - 每一圈的垂直增长距离: ")). ?4 s; k, l8 y S$ T7 @
- (initget 6) ; ptCntPerCircle 必须非零、不可忽略
3 _* V/ A T( f9 v - (setq ptCntPerCircle (getint "
9 ^8 r' O2 ?+ e1 \- {7 j! ?2 H! @ - 每一圈的插值点数<35>: "))
2 v. `( D8 g% d( D2 l - (cond ((null ptCntPerCircle) (setq ptCntPerCircle 35)))
2 \7 j9 L) v5 b) V& T& l7 Q - (spring RottCnt cntPt horiGrw ptCntPerCircle bgnRdtn vertGrw)
) q n5 q Y' `3 H5 E - (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值0 M, t2 f6 e. j/ w$ w: L* t2 |
- (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值
1 F+ Q, v( i2 o4 z1 w9 Q& b7 w& t - (setq *error* olderror) ; Restore old *error* handler. y6 Z8 F6 }1 }: l" z
- (princ); l/ E5 T) P, C0 j( i: I
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