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
% B# ^( h$ `! _3 ^8 ^! H0 J. O0 Z, V8 [% q: P0 o5 k
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:: u/ q% r) Z9 Z! q8 i% ] f
一、齿轮轮齿渐开渐开线9 k( |2 r8 E: a$ h
- & I' a4 H' c. d0 X3 B
- (defun c:gear(/): t. m* X! D W7 }
- (6 q. t# y% F7 e/ r/ r( w6 f. R1 b
- setq
4 l# [( v' X0 K7 t - p0 (getpoint"输入齿轮中心p0: ")
. m o, ^4 d) h! H$ W3 C) k - m (getreal"输入齿轮模数M: ")
4 `+ j# x- O- G$ c$ t6 a# e - z (getint"输入齿轮齿数Z: ")' p( K9 n1 h! F# d
- ha 1
$ z# N K% i- n8 w6 n- ?, W# o - c 0.25
% O0 o- w$ t' {# V! s - a (/ pi 9)
" O5 L! v: S1 f - ra(/ (* (+ z (+ ha ha)) m) 2)
8 |7 P( f+ L- ^& u9 r, M! {3 W$ I - rf(/ (* (- z (+ (+ ha ha) c)) m) 2)
& }; k' D t* h0 o& B - r(/ ( * m z) 2)9 q, E& q! o7 c+ c# f" U
- rb ( * r (cos a))" T& g4 m1 A( u" }
- ri rb
% d% X( v; P0 T7 q1 K - ang 0
0 f4 s6 ~ p5 u+ C4 l - g (polar p0 ang rb)
; r* i2 L) n7 M - )0 P, [# _0 f2 U' ~* Z) u
- (command "circle" p0 ra)
; e8 I) E/ M# D+ j. p% m - (command "circle" p0 rf)
5 r+ ~' F" Y$ L* s, u; l - (command "circle" p0 r), |6 n+ r8 J5 k \, L/ h
- (command "line" g)
( r$ [: k2 g4 Z3 T# L, K - Z/ Q' A, h" x$ f' T$ q- [
- (while (< ri ra)
0 y4 ~& g' |, o* F! V2 Z% ?) d - (setq
x! x/ ] Y# Y* u5 I" k - ang ( + ang(/ pi 360))
0 s! X: H7 c' s1 |- D( ~ - ri ( / rb (cos ang))0 `' e- W5 P* L- z4 k: G
- cta ( - (/ (sin ang) (cos ang)) ang)* E" i8 s, K7 M7 X+ S, G
- g(polar p0 cta ri). q3 v$ L- L) \8 M) W- S! x; x/ |: l
- )/ I' q8 q( l2 A% M# L6 Q( H
- , @( k9 q; ] ~% g
- (command g)% o; N- l4 \5 c3 ]
- )' e p0 n9 {+ l9 Y
- (command ) 4 j4 I6 R$ N* ^; k. f5 q+ N8 D2 ^
- )
: B5 @% l- V% ~/ h
复制代码
( ^: O8 \; g5 I& m( m E+ R1 L: i, o9 f; K$ E( f
) e; G' R- ^0 i
二、螺旋源程序
( F1 R' o+ a( U7 q- y" I& ~, |$ C- O5 b+ j( G; {3 I' G
- (defun errMsg (s)
2 e0 r9 C! Z; ?$ D7 {7 }3 i - (if (/= s "function cancelled") (princ (strcat "
. f {) n' b6 W/ K - Error: " s)))9 L# d: P4 W; r3 t m, {( Y) I4 R6 I
- ; 当命令执行时出现错误' y1 T& q9 q$ x; ~. Q/ A- x) @
- (setvar "cmdecho" ocmdold) ; 例如用户按下了CTRL + C
" X* A* a9 O: i) z$ u( C6 ? - (setvar "osmode" osmold)9 H, e2 _# h1 p8 w# U# J
- (setq *error* olderr) ; 恢复旧的错误处理3 ]# {. V+ u) i0 f$ ]* _0 N1 Q
- (princ)
+ k4 I; Z5 i) t8 C+ ]) U - )7 Q- u8 Z4 _; R6 ]$ W* l* ~; P
- - V$ y& }& t. Q, i5 \1 O' n
- (defun c:3Dthread (/ radouter threadpitch threadlength threadangle
$ L& z& H4 ? q8 X5 c - ptStart innerdiafactor radmid radinner ocmdold osmold 4H 5H 6H h6 g6)9 X5 R2 N9 G+ A. T4 f) s$ p
- ;-------------------------------------------------------------------4 g& [) K; U& R8 s- D
- ; 获取公制外径大小、螺距总长
% L. B& N* u" R2 A) Q - ; 然后计算一系列几何点
! w/ W# Q+ K9 z( l5 s - ; 并且关闭对象捕捉、命令回显! O0 n+ w6 W" @, o H) c
- ;-------------------------------------------------------------------
$ @: d7 z/ `9 h - (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))
- V& L* n9 F! ?& Q1 {! p" H - (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))
. g* {1 a- h n& x2 A* p# T - (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)) - [; U6 Q; A" q6 |; u% n
- (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)) 5 R1 p6 c: o8 ]! s# e
- (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))
9 r9 b$ r( w0 Y0 C! x - + r' s% D- I3 ?5 [( x6 ~
- (setq osmold (getvar "osmode")) ; 保存调用前的osmode系统变量值
. s: i N* I/ H7 E - (setq ocmdold (getvar "cmdecho")) ; 保存调用前的cmdecho系统变量值
5 q6 i: m. J+ G9 u& O7 O - (setvar "osmode" 0) ; 关闭对象捕捉 ; v$ E9 z% L1 x# k, h9 [0 r$ u- Z
- (setvar "cmdecho" 0) ; 关闭命令的回显
- Z. U4 \2 v- i6 w
' k/ m% a V6 j. T: |- (setq innerdiafactor 1.5) ; 设置内径系数
( V1 B1 C3 X/ x- ]' ?$ J' K) J - (initget 7) ; radmid 必须非零、非空、非负, `$ b: g) V! [) x* t
- (setq radmid (getdist "
' V. x: y* V) G8 w, T - 公制外径: "))
8 ^8 _, d) I' x0 \- V3 C% L - (initget 7) ; threadpitch 必须非零、非空、非负4 ~# z5 D8 G& Y+ [( n. P8 j; F
- (setq threadpitch (getreal "
9 ~; H' ^+ e* C- g/ t+ O+ E. m - 螺距: ")) J3 F' C; B% r- H
- (initget 1) ; ptStart 必须非空
" r( q- p1 `2 |1 I% I - (setq ptStart (getpoint "1 W' d, V. e* F: q+ c# w! ?" o3 [
- 起始点: "))# h" O9 e @ |5 O& t1 X% }2 O
- (initget 3) ; threadlength 必须非零、非空、非负( M+ \) ^9 f1 H* t4 d4 N& K- u
- (setq threadlength (getdist "' Y( Q/ _: g5 g9 h' M6 l1 P
- 螺纹总长(Y方向): "))
% m" E5 M; N6 Q5 e5 N
* j0 x( x2 N& ^# v- ; 对公制外径添加公差/ q, a0 Y4 _7 f
- (if (<= radmid 3) (setq order 0) ; 根据公制外径确定公差带中位置
& \/ j7 B0 L/ k, C2 w - (if (<= radmid 6) (setq order 1)
( C* a/ H F9 i5 X7 \ - (if (<= radmid 10) (setq order 2)
+ s: r# c% @7 ?; w6 ` - (if (<= radmid 18) (setq order 3)
2 j( P+ ?4 Z( @! T" b& R - (if (<= radmid 30) (setq order 4)
1 S# Z. b6 C& o, ^+ d7 w; T0 L5 E - (if (<= radmid 50) (setq order 5)) U. w/ {7 R' r5 m2 g" z
- (if (<= radmid 80) (setq order 6)
/ U# t6 c- g9 w, w - (if (<= radmid 120) (setq order 7)
" S9 }, K5 [/ A- l - (if (<= radmid 180) (setq order 8), y$ v9 I: o% \1 Y
- (if (<= radmid 250) (setq order 9)
" A' K) l' k. n" p - (if (<= radmid 315) (setq order 10)) g \+ Q. B! K& k! X- w# a
- (if (<= radmid 400) (setq order 11)
2 N. \# q: f9 Y& I7 Z2 p4 E - (if (<= radmid 500) (setq order 12)
( }# x$ C2 A' \: y - )))))))))))))
: R: z* ?0 U+ @# Q2 h1 J. P H
% K; c! ~4 g- Q6 g- M; B: `- (if (< threadpitch 0.25) (setq radmid (+ radmid (nth order 4H))) ; 根据螺距确定公差带
B. q" K/ M, B8 \1 x - (if (< threadpitch 0.35) (setq radmid (+ radmid (nth order 5H)))
4 e" M$ @4 }/ H6 ? - (if (>= threadpitch 0.35) (setq radmid (+ radmid (nth order 6H))); N: l* p" x' l! |2 p
- )))3 c' O2 o: \: D$ i
-
4 J u: |+ j( t J& ?: @ - (setq h (* 0.866025 threadpitch)) ; 计算齿高
* q! \# @! @% q/ a - (setq radouter (+ radmid (/ h 4))) ; 计算外径- l6 I0 B9 \0 T K$ p( v8 U
- (setq radinner (- radouter (* h innerdiafactor))) ; 计算内径* U, h8 b3 f7 _+ R1 [9 e
- (setq threadangle (+ 30 0)) ; 计算齿顶角$ Z" m- |5 O7 V5 c
- : k4 L! P" X. ~: s7 I
- (auxithread radouter radmid radinner threadpitch threadlength threadangle ptStart) ; 调用绘制三维螺纹的子函数2 v+ `$ q, e _( m1 k
$ d2 z" s, g2 S) s( o- (princ "
" e6 V# q- |. F$ U - 三维螺纹创建完成")
( [2 i8 O% M4 Z- x - (setvar "osmode" osmold) ; 恢复调用前的osmode系统变量值" ^2 W- c2 `: Q$ O' K6 @( o3 u* d5 m
- (setvar "cmdecho" ocmdold) ; 恢复调用前的cmdecho系统变量值
/ {0 {0 _& J+ G8 M" \6 _2 R7 z - (princ)7 ^' b% J6 c: p
- )2 w; N7 r2 v; d; c* Y8 X
* t9 [3 Q" \& }. V- (defun auxithread (radouter radmid radinner threadpitch threadlength threadangle ptStart / ttal pt1z ang pt1a: ? u2 c1 H3 h+ |: j8 D4 J
- pt1az pt3a pt1b pt1bz pt3b pttmp1 pttmp2 pttmp3 pttmp4 pttmp5 pttmp6 pttmp7 pttmp8 pttmp9 pttmp10 pttmp11 pttmp12 tstmp startcone endcone)+ K" j9 y% h$ J% f
- * p9 E. C X5 O, C2 ~0 \9 n
- ;(command "undo" "begin") ; 开始undo步骤
: {/ U; G% H8 I% F8 E% Q( @ - & k( E5 P1 z" a
- (setq ttal (+ (fix (/ (abs threadlength) threadpitch)) 3)$ W. `4 V% x! }- r( g+ n5 H
- pttmp1 (list (- (car ptStart) (/ radouter 2.0)) (cadr ptStart) (caddr ptStart))
- R8 h3 l8 S0 [ - pt1z (list (- (car ptStart) (/ radouter 2.0)) (cadr ptStart) (+ (caddr pttmp1) 1.0))
! P) h5 s( J0 Y2 T9 _ - pttmp2 (polar pttmp1 (/ (* threadangle pi) 180.0) 1)
- C" g) u) r, F8 o8 j% x - pttmp3 (list (+ (car pttmp1) radouter) (+ (cadr pttmp1) (/ threadpitch 2.0)) (caddr ptStart))
6 S' G$ z, w0 K. ?4 G u5 v - ang (angle pttmp1 pttmp3)
) J% J& H# b: k0 {* M9 V2 Z- y - pt1a (polar pttmp1 (+ ang (/ pi 2.0)) threadpitch)7 u8 ]4 A6 A8 x/ R3 Q0 m0 X- a
- pt1az (list (car pt1a) (cadr pt1a) (+ (caddr pt1a) 1.0))
) N$ F R: F7 g) Y - pt3a (polar pt1a ang radouter)& E4 t; {2 m* A+ _+ @- C
- pt1b (polar pttmp1 (- ang (/ pi 2.0)) threadpitch)
" \* e8 _# W& z( A$ s# t: H - pt1bz (list (car pt1b) (cadr pt1b) (+ (caddr pt1b) 1.0)) `1 a% ^- m0 ?6 g0 f- t% G0 P
- pt3b (polar pt1b ang radouter)
- J4 ], R' A5 x$ V5 S. b" g; h - pttmp4 (polar pttmp3 (/ (* (- 180 threadangle) pi) 180.0) 1)
2 K1 t7 f8 } J% C1 Z2 S - pttmp5 (inters pttmp1 pttmp2 pttmp3 pttmp4 nil)
* N5 H1 {7 a1 }- f+ F1 W - pttmp6 (list (car pttmp5) (cadr ptStart) (caddr ptStart))
8 x$ [* E8 S/ E. L+ r' h - pttmp7 (polar pttmp1 (/ (* (- 360 threadangle) pi) 180.0) 1)
9 R J- W4 E6 i; J1 r5 y1 S* n; R - pttmp8 (polar pttmp3 (/ (* (+ 180 threadangle) pi) 180.0) 1)
+ G/ M9 p4 ?8 ~* q- j3 @ - pttmp9 (inters pttmp1 pttmp7 pttmp3 pttmp8 nil)4 }9 y" Y. E" ^
- pttmp10 (list (car pttmp9) (cadr pttmp3) (caddr pttmp3))
4 s& D; ?* J8 S# R9 F7 [ - pttmp11 (polar ptStart (/ pi 2.0) threadpitch)
/ Z$ Z8 o2 K1 o1 W - pttmp12 (polar pttmp11 (/ pi 2.0) (abs threadlength))
" k) q; D }2 R; O2 ~% X - )
1 S# _$ G: ?( p, L! n: n% R9 ~/ ?
( B" C7 n& c |" q a5 B. E- ;-------------------------------------------------------------------. G* @0 z0 \* S" A/ Q" e0 L
- ; 绘制两个倒置的并偏移1/2螺距的圆锥
7 f' v- ^( S& ]0 C - ; 这两个圆锥都以中剖面剖分- w; M+ ~( g- m# N; H
- ; 进行并集运算
! j; Q1 ~2 M. e& m9 e - ;-------------------------------------------------------------------$ W$ |. U& P: E( }$ u
- ! v, `- e# g) c" L. ^- G3 V
- (SETQ startcone "order")1 H9 d0 E. u& L( k
- (SETQ endcone "Y")5 }+ y" H. @9 ?, D& T5 a
- (command "zoom" "w" (list (car pt1a) (+ (cadr pt1a) (abs threadlength)) (caddr pt1a)) pt3b)" ~) ^/ s* l$ W% n* {7 i
, e9 x" X- p5 ]' Z4 U' V* A- (princ "1 p( Y0 ]9 \' _8 D! u( H
- 正在绘制三维螺纹,请等待")
% L8 k' H7 _$ }( ]- I - (command "pline" pttmp1 pttmp5 pttmp6 "c")) |3 m7 e8 I' E( n m' @/ T% E
- (command "revolve" "l" "" pttmp5 pttmp6 "")
& o2 c* c+ d) Z0 Z K9 L7 }: E7 Y+ E4 W - (command "slice" "l" "" pttmp1 pttmp3 pt1z pttmp5)) S8 f- t* U2 [! V* W
- (command "slice" "l" "" pt1a pt3a pt1az pttmp3)2 }# b) ~1 ~! y+ y) N" t2 Z
- (setq tstmp (ssadd (entlast)))
. D0 n% L- A0 w' ~! r. c - (command "pline" pttmp3 pttmp9 pttmp10 "c"); B% s$ }7 a# f% m& ^1 |
- (command "revolve" "l" "" pttmp9 pttmp10 "")
% e2 ]" Q* E7 c - (command "slice" "l" "" pttmp1 pttmp3 pt1z pttmp9); i6 I+ L i- Z
- (command "slice" "l" "" pt1b pt3b pt1bz pttmp3)6 Y; W9 }$ x6 f0 _- g
- (setq tstmp (ssadd (entlast) tstmp))" M) T \ g' T: `; @5 m* p& O
- (command "union" tstmp ""): Z" \; W/ z7 [. I( |: ?
9 n+ ?. l6 o- D- ;-------------------------------------------------------------------7 }- Y% I4 S3 L
- ; 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; ]& c4 ]' G0 h B3 \
- ; 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
8 u: ~, o$ D6 y' C/ t - ; 在最后一步被切除
7 I) N) ~" P, ~8 ~9 F* Z7 d+ ~ - ;-------------------------------------------------------------------
0 y+ H4 t- i p+ J8 |5 ]
`% t1 G6 g5 r$ V7 h V- (command "slice" tstmp "" "xy" ptStart "b")
" {# Y- g: l$ f s& h' o# P4 w1 } - (setq tstmp (ssadd (entlast) tstmp))
$ s4 {% V7 R/ }: z( k3 ~ - (command "mirror" "l" "" pttmp1 "@10<0" "y")
3 T7 ?8 i8 B0 F% ?- U3 ? - (command "union" tstmp "")9 q! {' {1 b, `
: E$ D- L/ D! ?, o' t$ K- ;-------------------------------------------------------------------
; y4 D5 p' E8 Z& P2 z - ; 螺旋进行阵列操作,然后再作并集(可能会耗费一定时间)* X! {; q5 }, s* F: r, h
- ; 得到的实体再切除到指定的螺旋高度) M. h9 A% H( G0 K. D) c; s o* p
- ;-------------------------------------------------------------------
0 Z2 _( G9 V8 C( n% { - / G9 Q1 r% j* X X, c# T+ {
- (setq e (entlast))2 N0 x/ E' L7 O( p9 t# l9 \
- (command "array" tstmp "" "r" ttal 1 threadpitch)7 m$ O' ^$ j5 w `
- (repeat (1- ttal)& I: V7 n7 s/ r
- (setq e (entnext e)
4 N' T7 Z- s; \& D. [ - tstmp (ssadd e tstmp)! V) `. z8 l$ l1 o* m8 @( l
- )
`! D( P* j3 ~" D) {0 T+ f9 s' N( d - )" X; Y* K# d( E% Y( `
- (command "union" tstmp "")
/ F9 R: R0 G% G5 Z) a - 3 q- b" Z" `3 t/ Q3 H! V$ q
- ; 若开始创建45度的圆锥
6 E$ d# R4 K) E" K9 y - (if (/= startcone "order")
2 n# E) L- r5 l: \; n$ |0 B' J - (progn (setq e (entlast))
8 i3 K, C* L0 V, H3 c - (command "cone" (list (car ptStart) (+ (cadr ptStart) threadpitch) (caddr ptStart)) "d" radmid "a" (list (car ptStart) (+ (+ (cadr ptStart) (/ radmid 2)) threadpitch) (caddr ptStart)))
4 z. W; F$ b: w# I& E4 h: g - (command "union" "l" e "")9 Z0 Q# x" o4 Z) @) L
- )$ D, O3 p, ^7 }# J$ M( p. {
- )
9 l' z# i% b0 A' \3 x - ! c* s! M, e R3 A0 z
- (command "slice" "l" "" "zx" pttmp11 pttmp12)
3 G: H5 \( B g. K- n+ h - (command "slice" "l" "" "zx" pttmp12 pttmp11)
5 h7 @1 A9 W; x7 x4 O - (command "move" "l" "" ptStart (list (car ptStart) (- (cadr ptStart) threadpitch) (caddr ptStart))) ' I+ |, t8 J/ N; k' R
- , m2 g; X- X4 q/ ?
- ; 创建最小直径的圆柱体,然后与螺旋作交集
# k; f. u5 @2 E - (setq e (entlast))
5 ~7 S+ v: n6 h( ]( [ - (command "cylinder" ptStart "d" radinner "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart)))4 Q( M' {8 p _/ r8 X) V
- (command "union" "l" e "")* n2 `6 p* |2 W7 b$ H7 N8 K% \
- (setq tstmp (entlast))/ o" |8 ~- u8 ]
$ x; l9 E9 [8 e/ S) M4 Q& g; H- ; 创建中空的圆柱体( x2 q: Q- i& M9 C% R- _# R* Q
- (command "cylinder" ptStart "d" radmid "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart))) ; minor dia, i! I A1 W/ [0 W9 v% z
- (setq e (entlast))! h6 ~, M, B0 @/ k& H3 E* _
- 7 k: M4 h5 ^3 f3 M' `+ O
- ; 若最后创建45度的圆锥& K, H- k" ^+ u6 a8 z) w
- (if (/= endcone "order")
) a5 k Z/ N. A# u5 p9 | - (progn (command "move" "l" "" ptStart (list (car ptStart) (- (cadr ptStart) (/ (- radmid radinner) 2)) (caddr ptStart))) & e0 N+ j* o- n
- (command "cone" ptStart "d" radmid "a" (list (car ptStart) (+ (cadr ptStart) (/ radmid 2)) (caddr ptStart)))
. `0 P, ~) R! G4 x - (command "move" "l" "" ptStart (list (car ptStart) (- (+ (cadr ptStart) (abs threadlength)) (/ (- radmid radinner) 2)) (caddr ptStart)))& X& p" {0 d% S. b: f
- (command "union" "l" e "")
7 _; Z& Z1 \6 {+ X. `* Y - (setq e (entlast))- v2 s, e" R4 J+ m1 n6 ~
- )7 O' \6 g) ~ T) E+ c- z
- )
2 t y6 I, G9 G# A! o
5 l- \1 ~+ y; l* y: t/ k- ; 从大圆柱中减去小直径圆柱) I& s& q c. r
- (command "cylinder" ptStart "d" (* radmid 1.5) "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart))), X( c8 J1 j2 D1 Z- U* i: }
- (command "subtract" "l" "" e "")
/ C3 N3 a3 c! K% N$ s( R - (setq e (entlast))
9 y. {( O6 d3 c - 1 p& y6 g6 |, ]% f# s1 K
- ; 从螺旋中减去圆柱
/ [* f( W8 q5 k: C6 G% b - (command "subtract" tstmp "" e "")' [% U8 M* E9 _( P- |
, i$ c, H% b8 Y6 W+ k( `- ; 如果螺旋长度为负然后镜像
. C6 f1 q0 F: f9 } - (setq e (entlast))
y1 ]$ a4 l; d0 I$ w5 Y3 u, f: J - (if (< threadlength 0) (mirror3d e "zx" ptStart "y"))
1 b5 B$ _" C8 G! q5 O' \" s - ' N6 K" j! z7 ?$ b X$ \. s# Y" z
- (command "zoom" "p")
9 O1 T6 z4 K7 K6 n3 F7 G - ; (command "undo" "end") ; 结束undo步骤
9 j- L# h! V+ D/ q0 J6 g! K - )# m: v1 E) A8 [% L+ y
- : Z8 _8 O+ t2 S8 i4 Q- V
- ;;;---------------------------------------------------------------------------------------------------------------------;
' ^) Z) U% Y, Z3 r s5 O - (arxload "geom3d" nil)
' z$ N1 N H( R. q6 r' |8 ?$ F - (princ ", `! T+ b; c8 t6 N# x/ Z8 I
- 3DThread 已加载。 ")0 u4 \' s3 i* M# h4 g9 o8 @/ V% w9 w6 Z
- (princ)
/ m, K9 z* u. T1 M( [
复制代码 9 [& K6 P- r* w
+ f$ {8 } x2 N3 F- L/ Q5 O- |, ^1 i' b; N$ v
三、弹簧源程序
9 F# r) G% P4 c! g3 ~) }+ }- (defun errMsg (s) ; 当命令执行时出现错误
4 a. y# `/ l; Z4 N/ ~# V7 t, I - ; 例如用户按下了CTRL + C
% G0 [0 h0 ^7 V' ? - (if (/= s "Function cancelled")
8 l/ F! f. Z1 `8 v2 C - (princ (strcat "4 f2 S6 @0 C6 V# t& @
- Error: " s))7 l$ y* U3 f; C6 a1 y1 z8 w# H: T
- )* v$ T; _% U j3 o
- (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值7 a( f+ \- D! i0 {( A4 w3 b
- (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值
$ N+ k2 P0 s/ W+ z* K! h7 ?7 Q: Z) _ - (setq *error* olderror) ; 恢复旧的错误处理
& s- x$ A) [2 @ r - (princ)
# p' F! P/ q# z! l" k - )" @% S3 F: `; y
/ q; q0 G& r4 i% G% U9 }: P, }- (defun spring (nRepeat cntPoint bhfac lr strad bvfac
- g2 v% [; Z, I8 L% ~ - / angle distnc tp aGrw dhGrw dvGrw Pi2 dv), D, p* n6 P1 _5 N1 a
- ; g- T5 r$ Q# {
- (setvar "blipmode" 0) ; 关闭 blipmode & f0 W0 I( Q. n: V1 q: s8 i" e
- (setvar "cmdecho" 0) ; 关闭 cmdecho4 X! O$ t+ Q+ I' O4 |2 x
- (setq Pi2 (* 3.14159265 2))
+ `) ]: Q$ o1 B0 s3 w5 h0 d - (setq aGrw (/ Pi2 lr)): G7 t, D" a4 P. Y! S) s' t7 K
- (setq dhGrw (/ bhfac lr))
0 F" q! `/ m% p7 c - (if bvfac (setq dvGrw (/ bvfac lr))): Y+ `7 I0 c0 n6 q d4 J3 l3 g
- (setq angle 0.0)+ Y6 V/ V" S0 Z7 l2 v$ R. h
- (if bvfac4 O9 v& {* I" A* b8 |: k
- (setq distnc strad dv 0.0)
; O$ s7 y1 E) ~ - (setq distnc 0.0)4 J4 w" a5 |, b5 I
- )2 t1 p$ j. }/ N: U% q0 R
- (if bvfac % I1 ? J# [% g% J" e1 s( `* i
- (command "3dpoly") ; 开始绘制弹簧
& C# h& j) n2 [2 i9 k - (command "pline" cntPoint) ; 从基点开始绘制弹簧5 n5 v" t) V- N: @0 c5 o: ^4 F! M" Z6 f
- )
( |9 w! S) p' r - (repeat nRepeat 9 W( [, p) Q( B: S" r, k
- (repeat lr ; H/ \. A" h4 _4 A' [
- (setq tp (polar cntPoint (setq angle (+ angle aGrw))
$ n w" K& L! { - (setq distnc (+ distnc dhGrw)). l l' b; z6 k8 V0 [3 l* C! r
- )" f; l# A4 O7 H6 E# s
- )% }$ R# m, Q2 l& e
- (if bvfac
( y' f& r+ r, K; p) s/ ^ - (setq tp (list (car tp) (cadr tp) (+ dv (caddr tp)))* h$ B/ {6 S; H4 a
- dv (+ dv dvGrw)
4 ?* V; X6 {+ z; { - )2 r9 ^! ]9 _; {5 d0 l# v4 N' ]
- )& d+ e0 q4 H' \, s2 P! r
- (command tp) ; 继续输入下一点
5 y+ z3 y2 t0 F/ f* M3 ] - )' q1 ] R! n$ z
- ) 9 e+ R* m) n& w9 }. n3 w3 G
- (command "") ; 输入结束
8 L( V/ l! {- x, ?8 n4 u- a - (princ)
1 H% j2 \. G- k& }! U - ) # J/ r) y% x' b. P! g4 x3 y
- # p+ V* \7 g% V7 {0 U. O/ v
- ;;;
% Q; Q$ m+ f; s. L+ S s* G - ;;; 生成三维弹簧函数调用接口
3 ? [' U o1 ~( V - ;;;
: |6 V1 b- j$ ^; ]' W5 C
3 M- ?' S' R$ R1 M: f- (defun C:3DSPRING (/ olderror cmdch blpmd cntPt RottCnt horiGrw vertGrw bgnRdtn ptCntPerCircle)
: b/ l9 a. ~& ?: @; U - (setq cmdch (getvar "cmdecho")) ; 获取cmdecho值,以便调用结束后恢复
h3 w- q* N; @. Q S9 V2 G% ~ - (setq blpmd (getvar "blipmode")) ; 获取blipmode值,以便调用结束后恢复2 L+ E9 e8 x- ^% {
- (setvar "cmdecho" 0) ; 关闭 cmdecho
5 \: T% R# P" p' d, f% V0 r% | - (initget 1) ; cntPt 必须非空
2 x* i( m" E7 G L' p' F- o - (setq cntPt (getpoint "% @: A6 l8 P' {- O) T% y E1 X
- 请输入底部中心点: "))
$ d2 Z; \% B% y. \7 K - (initget 7) ; RottCnt 必须非零、非空,不可忽略! h" d2 \; b: T
- (setq RottCnt (getint "
: i/ }9 ]1 e, ~* u - 旋转的圈数: "))
. A; I8 A, Q3 f0 E5 v: z, ~1 Z - (initget 7) ; bgnRdtn 必须非零、非空,不可忽略
& u; O1 ?" \4 O* ~ - (setq bgnRdtn (getdist cntPt "* b% I! @( d( m
- 起始半径: "))
$ j3 n+ P% M0 R1 V - (initget 1) ; cf 必须非零、非空 @, ^) @; G8 M
- (setq horiGrw (getdist "( g3 j$ y ^$ l$ @1 N9 g# r* R
- 每一圈的水平增长距离: "))- |1 `9 T/ P2 `& G
- (initget 3) ; cf 必须非零、非空
& w0 m0 T W& E7 a$ @2 }* i - (setq vertGrw (getdist "
+ v5 z( A( m3 M! H - 每一圈的垂直增长距离: "))
, p- t @6 }/ v, i - (initget 6) ; ptCntPerCircle 必须非零、不可忽略# C' e9 I, ^: T: |( D
- (setq ptCntPerCircle (getint "
, U* U7 P1 M. h* Y! j - 每一圈的插值点数<35>: "))
7 F7 [' d# C( h! z5 l2 P0 z3 e - (cond ((null ptCntPerCircle) (setq ptCntPerCircle 35))) & m$ ^9 E7 r. _
- (spring RottCnt cntPt horiGrw ptCntPerCircle bgnRdtn vertGrw)
( p$ d2 Y" r5 }% L - (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值. |; m X$ U! a
- (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值+ H3 Y6 E% [! f+ L! L3 e
- (setq *error* olderror) ; Restore old *error* handler
: C) Q2 I( C# I" W - (princ)
8 H5 Z! n5 v' Z6 g) s3 K8 N. X - % q; X& m( E; r+ O, \
- ) $ o3 b" M) M& t- \
复制代码 |