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7 C9 o& v' r& e; O: R5 K6 Z
! T+ M, b. f" Z3 z4 E9 T1 H2 }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：$ U1 s# k4 v+ M6 k( F
一、齿轮轮齿渐开渐开线6 i- g+ A A( [
2 j* {, t$ ~; x5 C. c# r% C- (defun c:gear(/)5 K2 I3 C& w7 _* l0 M/ |2 c" W
- (7 P' V3 H9 H$ z* o! D4 k
- setq
! R1 Q+ q$ t1 X" K' @ - p0 (getpoint"输入齿轮中心p0: ")
% \4 E6 v/ G) F" U- q - m (getreal"输入齿轮模数M: ")
/ f6 h( ?5 U) R( n - z (getint"输入齿轮齿数Z: ")) y& K; \' q8 y, e* s; {) A
- ha 1
( A/ a+ l- c T( m% M7 z - c 0.257 N) _2 T6 ?* O
- a (/ pi 9)
' O& m. y1 J% m, b, S( p - ra(/ (* (+ z (+ ha ha)) m) 2)
1 s2 l9 F+ n) r/ q7 z - rf(/ (* (- z (+ (+ ha ha) c)) m) 2)
+ F0 n6 j }0 F# r% i) `( Z - r(/ ( * m z) 2)9 d5 n2 a8 d- Y- ?; R# v
- rb ( * r (cos a))5 T" ]) T, S, K# }2 j" I! Z S- p
- ri rb% ~8 z6 x- x( E! H: J
- ang 0
[& N8 F2 W" {7 @; e - g (polar p0 ang rb)6 w2 R( T3 a* ?% l' o) R( T
- )# X4 Z" c. M- K- h+ I
- (command "circle" p0 ra)' G* h4 |0 _0 Z+ [ i
- (command "circle" p0 rf)+ c) W7 W6 g6 I* R1 W: G. Y+ I W) u
- (command "circle" p0 r)
/ x/ ^: K" x/ p - (command "line" g)
; C8 B! P0 f* K& V- W2 V - 2 R d+ Z" k1 e+ C
- (while (< ri ra)
: K* ]5 e% C5 c! R9 b - (setq: P: t9 t% E4 ]' U; S* _/ E4 z
- ang ( + ang(/ pi 360))2 m* \& t7 p9 m4 {$ m
- ri ( / rb (cos ang))
1 f- B" n0 b4 h - cta ( - (/ (sin ang) (cos ang)) ang)
s! R5 C2 m4 x- U0 Q5 U! t - g(polar p0 cta ri)" e0 N- q& M( u6 v
- )
( a B! r* V4 ` - 3 U- V+ o$ Q1 Y# ?! I! ?, j
- (command g), O0 O0 U1 I C0 M1 t% O2 B
- )5 M1 A- C% D; D; U8 t ]
- (command ) & {. z4 y( `5 J5 h* O# j
- )
3 U5 ]4 |/ F$ q4 E" G* h
0 e I: W6 A! V& w. N0 X
" z& F& k5 w9 f" g二、螺旋源程序$ E) a2 N0 J9 t: |* K
6 K1 s! i1 D/ U1 F# x+ W+ t+ X- (defun errMsg (s)- r6 W: y) H& s9 h9 h) ]5 e% O
- (if (/= s "function cancelled") (princ (strcat "
/ F) ?, c! n6 b3 ^% V5 y - Error: " s)))4 {* N! V r% u8 q, b
- ; 当命令执行时出现错误
' d/ x6 T9 H' T5 A9 P& F% w! c - (setvar "cmdecho" ocmdold) ; 例如用户按下了CTRL + C
3 R4 V& g L& H# X2 _1 J - (setvar "osmode" osmold)1 o$ M8 u0 T5 b* I6 f/ i
- (setq *error* olderr) ; 恢复旧的错误处理
# K* h$ q) ^/ [5 j - (princ)
9 I3 A% _+ }# E/ ` - )
+ d) H8 R' i% [+ _2 S
1 S8 ]# u& C; J/ D3 J: T- (defun c:3Dthread (/ radouter threadpitch threadlength threadangle ; e' |3 H6 {, w( x7 c
- ptStart innerdiafactor radmid radinner ocmdold osmold 4H 5H 6H h6 g6)
5 {& m7 s. x4 v9 N8 q/ n( h - ;-------------------------------------------------------------------
3 ~9 J3 p6 C3 M. J- G+ ] - ; 获取公制外径大小、螺距总长 d/ Y/ B2 m4 ?" R! B: G
- ; 然后计算一系列几何点5 ?/ ~+ v5 l2 A; N; y8 p
- ; 并且关闭对象捕捉、命令回显
! M0 @$ b3 j6 G3 P; L2 D5 ^ - ;-------------------------------------------------------------------
S0 r5 Y3 ^, B8 t7 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))
; c* J& ?8 ]8 g, w - (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))
* x$ w# y, R& ]; t2 e- c - (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))
5 B4 v- G0 J5 u# _ - (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 q9 `1 m# r! \- Q - (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)) ( c% R5 q! E1 O2 Q, y
- ) _6 v; N0 ]6 i3 k' i
- (setq osmold (getvar "osmode")) ; 保存调用前的osmode系统变量值. `5 ~( K8 X! N) b! d8 I( X& N1 p- }
- (setq ocmdold (getvar "cmdecho")) ; 保存调用前的cmdecho系统变量值
+ d+ S- `( h3 L3 P3 K4 I" m$ y - (setvar "osmode" 0) ; 关闭对象捕捉
/ `; J3 t6 R4 \) h5 A8 J - (setvar "cmdecho" 0) ; 关闭命令的回显. j; ]# q8 N1 J9 ]8 \' E. j
- ( U9 I; n" U* g5 ]0 x# r
- (setq innerdiafactor 1.5) ; 设置内径系数; v% Z* G7 O; p3 n
- (initget 7) ; radmid 必须非零、非空、非负
6 P. c1 J5 L" e& Z- B" f - (setq radmid (getdist ", P$ L% T: V/ z2 ^. S" n
- 公制外径: ")); n8 G( F) b6 _3 H& a
- (initget 7) ; threadpitch 必须非零、非空、非负
0 L. q# F. u; {+ u$ M8 C - (setq threadpitch (getreal "
- a. H' l8 [$ g& U+ P# o# y - 螺距: "))
" s! N& E" o. ]9 _. h& d - (initget 1) ; ptStart 必须非空
% L1 d& q, |" j3 u o - (setq ptStart (getpoint "
, W! }7 M4 P# Y - 起始点: "))
' G; C/ q! p( u - (initget 3) ; threadlength 必须非零、非空、非负; W2 R/ [9 A- S- J: P- e
- (setq threadlength (getdist "" \. K3 O" B! F( k
- 螺纹总长(Y方向): "))
o/ L- ^$ i% j/ y: a- t
4 S8 z" ^2 i; W% ]: ~9 s- ; 对公制外径添加公差
- |. M4 g! j# ?+ n) y: V7 ` - (if (<= radmid 3) (setq order 0) ; 根据公制外径确定公差带中位置
+ _3 f. Q0 M+ m: ?; _8 \% ? - (if (<= radmid 6) (setq order 1)
3 a2 F2 O! {) C$ k0 |) \; I& c - (if (<= radmid 10) (setq order 2)
, Y$ t4 { D3 P/ T- B- |) c) P7 Y - (if (<= radmid 18) (setq order 3)
$ `. w) ~& E6 N7 B - (if (<= radmid 30) (setq order 4)
3 ]8 d! P- A% A7 C0 h3 f - (if (<= radmid 50) (setq order 5)* V1 y) [9 D1 f" T7 ]+ r7 y2 h1 j. b
- (if (<= radmid 80) (setq order 6)
1 L X7 K! w; ]/ h! R3 u$ R# S - (if (<= radmid 120) (setq order 7)/ A, R E1 n5 u( j* M5 L
- (if (<= radmid 180) (setq order 8)
9 I/ \. t" O( ?3 Y" V: w - (if (<= radmid 250) (setq order 9)
" E+ |. x7 e& i - (if (<= radmid 315) (setq order 10)
- ]- K2 T( H) l8 J# j# x. ^ - (if (<= radmid 400) (setq order 11)
$ z6 D0 I- U' |3 B7 u- Q O - (if (<= radmid 500) (setq order 12)- y$ A$ r2 |9 G
- )))))))))))))
# l0 z( N# x! H7 T
2 n1 i# Q! ~. V$ b: B8 n$ E! _0 \- (if (< threadpitch 0.25) (setq radmid (+ radmid (nth order 4H))) ; 根据螺距确定公差带/ o; k) x1 y, d+ h3 [% X$ d
- (if (< threadpitch 0.35) (setq radmid (+ radmid (nth order 5H)))
4 w- M, Z) O6 N6 z, W - (if (>= threadpitch 0.35) (setq radmid (+ radmid (nth order 6H)))
/ Q% P0 p* r9 c: f3 } - )))- w, A, W) [9 I4 v/ `: V) O* r
-
/ p. o! y+ j/ R2 S" E - (setq h (* 0.866025 threadpitch)) ; 计算齿高1 ]" {1 X0 Q$ B" }" y+ q8 T* ]0 z& Y |( W
- (setq radouter (+ radmid (/ h 4))) ; 计算外径
+ n( Y, N- o; K" C3 M I- i* z, V q - (setq radinner (- radouter (* h innerdiafactor))) ; 计算内径
, f$ c V: O! N/ e0 | - (setq threadangle (+ 30 0)) ; 计算齿顶角
+ A3 |; R3 B4 F L& g
/ m, J: v3 C: D. s6 _- h( s! ]' T- (auxithread radouter radmid radinner threadpitch threadlength threadangle ptStart) ; 调用绘制三维螺纹的子函数
1 c2 K$ \/ c4 B - 4 `9 q. B$ N5 M' j/ u- V
- (princ "1 q$ {) F; G! q4 H+ |
- 三维螺纹创建完成")
# `1 u( r6 A+ S* Y' I - (setvar "osmode" osmold) ; 恢复调用前的osmode系统变量值" J3 y7 r J2 \+ _/ P; j
- (setvar "cmdecho" ocmdold) ; 恢复调用前的cmdecho系统变量值
v4 i+ \; u2 K, f! m0 B1 O - (princ)2 n- I/ D ~' G1 N
- )+ V% f0 j. W* [2 B) V
- / E+ V& I) q i2 e7 S* ~ G; ~
- (defun auxithread (radouter radmid radinner threadpitch threadlength threadangle ptStart / ttal pt1z ang pt1a
$ T6 \; p5 |- G& H' Z; q1 U - pt1az pt3a pt1b pt1bz pt3b pttmp1 pttmp2 pttmp3 pttmp4 pttmp5 pttmp6 pttmp7 pttmp8 pttmp9 pttmp10 pttmp11 pttmp12 tstmp startcone endcone)4 K: Y0 q1 p4 V
/ y b: p# g0 P% D- ;(command "undo" "begin") ; 开始undo步骤
) @7 v3 s% h% e$ z$ |' G
* F# `$ X1 C0 l# e* Q- M) r: n- (setq ttal (+ (fix (/ (abs threadlength) threadpitch)) 3)
/ o2 i- X5 \( W+ P, k - pttmp1 (list (- (car ptStart) (/ radouter 2.0)) (cadr ptStart) (caddr ptStart))9 |9 ?& {; O$ X( m7 G
- pt1z (list (- (car ptStart) (/ radouter 2.0)) (cadr ptStart) (+ (caddr pttmp1) 1.0))- }* E( A+ |- `% ^
- pttmp2 (polar pttmp1 (/ (* threadangle pi) 180.0) 1)
* u, r. [; U7 @0 J1 Z - pttmp3 (list (+ (car pttmp1) radouter) (+ (cadr pttmp1) (/ threadpitch 2.0)) (caddr ptStart))2 A4 H' a |. i7 {% I: Z' Q
- ang (angle pttmp1 pttmp3)
. Q" y* d. L: O. _; _ - pt1a (polar pttmp1 (+ ang (/ pi 2.0)) threadpitch)( ?9 V J4 Q( t) b
- pt1az (list (car pt1a) (cadr pt1a) (+ (caddr pt1a) 1.0))
4 F3 f8 f4 j9 i5 m1 g - pt3a (polar pt1a ang radouter)7 m f- s* {# M# i
- pt1b (polar pttmp1 (- ang (/ pi 2.0)) threadpitch)
) ]! y) H, e& J4 |" a& E! `9 Z - pt1bz (list (car pt1b) (cadr pt1b) (+ (caddr pt1b) 1.0))$ F" m4 g8 [* D
- pt3b (polar pt1b ang radouter)
8 o. Q5 q6 {9 W8 T8 M# h; c - pttmp4 (polar pttmp3 (/ (* (- 180 threadangle) pi) 180.0) 1)% J; t( U: v5 |$ q3 Q% \7 A, s m
- pttmp5 (inters pttmp1 pttmp2 pttmp3 pttmp4 nil)
. a0 {% t" \; ` - pttmp6 (list (car pttmp5) (cadr ptStart) (caddr ptStart))8 b, W+ z7 h6 |1 }( r2 P
- pttmp7 (polar pttmp1 (/ (* (- 360 threadangle) pi) 180.0) 1)1 u/ X; _- O0 w# A( U) r' n
- pttmp8 (polar pttmp3 (/ (* (+ 180 threadangle) pi) 180.0) 1)% N# o& q h7 b! i2 j6 J; o
- pttmp9 (inters pttmp1 pttmp7 pttmp3 pttmp8 nil)5 b7 J% h6 T! r( c% C. Z! ]- p- ?5 B
- pttmp10 (list (car pttmp9) (cadr pttmp3) (caddr pttmp3))
1 X. A6 D/ Q ^3 l - pttmp11 (polar ptStart (/ pi 2.0) threadpitch)
b' l+ ]" y+ y0 @ - pttmp12 (polar pttmp11 (/ pi 2.0) (abs threadlength))- c7 \) d/ u) x0 t/ N" d9 a1 I8 B
- )- i# |* z# X) a! W
- ( J* j: l. J2 F* z& u5 ~# w
- ;-------------------------------------------------------------------
- T& Z/ i2 B- Y K: k; q8 G9 P - ; 绘制两个倒置的并偏移1/2螺距的圆锥
; i9 ^( t6 D2 c3 Y6 @/ S - ; 这两个圆锥都以中剖面剖分
+ z; y0 X4 k/ R" G% N - ; 进行并集运算
\2 \3 l! h: E+ ]& _ - ;-------------------------------------------------------------------$ o* {) \$ _ u
- & k) _4 S8 |8 V/ M
- (SETQ startcone "order")4 x( ?5 L2 S& p. I P: f
- (SETQ endcone "Y")3 h9 ?5 P- e, F6 r
- (command "zoom" "w" (list (car pt1a) (+ (cadr pt1a) (abs threadlength)) (caddr pt1a)) pt3b)
7 d. p$ B' E6 @ - 9 ]- n# q. q( ^
- (princ "
3 u: o! l7 [# Y" \9 V5 m0 O - 正在绘制三维螺纹，请等待")
% d" x; t# ?7 q, S) g: T7 _( F - (command "pline" pttmp1 pttmp5 pttmp6 "c")1 i ?: R T5 f* f
- (command "revolve" "l" "" pttmp5 pttmp6 "")3 H+ E* n3 S6 A1 S
- (command "slice" "l" "" pttmp1 pttmp3 pt1z pttmp5), f- a' I& q0 z6 @
- (command "slice" "l" "" pt1a pt3a pt1az pttmp3)
7 k, j1 q+ n+ z- L - (setq tstmp (ssadd (entlast))), V! k9 {) U6 w4 g' B8 r n- b% r
- (command "pline" pttmp3 pttmp9 pttmp10 "c")4 Q9 W' y" Q8 u& Y
- (command "revolve" "l" "" pttmp9 pttmp10 "")8 h7 a; n. ~+ y" v
- (command "slice" "l" "" pttmp1 pttmp3 pt1z pttmp9)
8 Q8 i/ N8 f! `4 m" U - (command "slice" "l" "" pt1b pt3b pt1bz pttmp3)! k5 S. [3 H. l! Z
- (setq tstmp (ssadd (entlast) tstmp))- z( {& p6 B; p$ }
- (command "union" tstmp "") x- t$ Y# u! d! x
% h) A' d4 [& I4 s- ;-------------------------------------------------------------------
9 v% V' u5 d$ q/ O - ; 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+ x2 m" ?0 U6 Q+ P9 U0 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
, S; u5 T; R1 O7 p8 s P# ^ - ; 在最后一步被切除5 x9 K/ n0 ?9 g2 I
- ;-------------------------------------------------------------------
: i" t# _" Z2 ] Y- w: `
$ c9 D7 m1 N) e/ `- (command "slice" tstmp "" "xy" ptStart "b")# D) C6 W$ T8 s
- (setq tstmp (ssadd (entlast) tstmp))
+ t* y+ _( |, @8 ~' E" K3 Z9 _ - (command "mirror" "l" "" pttmp1 "@10<0" "y")
, X t3 p& ?9 e! B- g" T- a1 u: @ - (command "union" tstmp "")/ s8 |$ d* [3 M3 b
4 h2 U5 w6 M7 \2 Q3 F- ;-------------------------------------------------------------------
- I+ ] G) M. l9 l, W6 F5 Q4 R - ; 螺旋进行阵列操作，然后再作并集（可能会耗费一定时间）
6 k9 ]$ p1 r. I - ; 得到的实体再切除到指定的螺旋高度* Y+ I4 m& L2 l M7 P/ k8 x
- ;-------------------------------------------------------------------
- D# L2 }$ N. ? - . H V8 a- [# W
- (setq e (entlast))" i/ I1 y- a0 C6 c
- (command "array" tstmp "" "r" ttal 1 threadpitch)
: E$ |0 f( e. U% j) k! Y - (repeat (1- ttal)4 k! a7 `0 l! b
- (setq e (entnext e) l. ^3 H7 X2 Y6 G m$ r7 V
- tstmp (ssadd e tstmp)
9 Q) o1 x! `' B: J7 \# ]! {( I - )) X/ l! V- F: z. ], _
- )
2 }* h2 Z* b3 n u: | - (command "union" tstmp ""). z7 j% U. Y0 f! ^# K- V* x
( i: N c- q, h# q9 }5 E- C- ; 若开始创建45度的圆锥- ?+ G3 s; A6 N7 P) y( l
- (if (/= startcone "order")/ _: M1 y6 q( p0 h, F
- (progn (setq e (entlast)). H R" k! i e' p- |5 x
- (command "cone" (list (car ptStart) (+ (cadr ptStart) threadpitch) (caddr ptStart)) "d" radmid "a" (list (car ptStart) (+ (+ (cadr ptStart) (/ radmid 2)) threadpitch) (caddr ptStart)))$ O a7 }. C/ ~: V" E; f
- (command "union" "l" e "")
' ]7 \. d$ e$ X! o - )+ D l$ m8 f, o
- )
- y; v& z F; A+ o; ?+ z0 x - , q2 x6 o, }8 j# A0 Y- {3 P2 H4 I4 b
- (command "slice" "l" "" "zx" pttmp11 pttmp12)
+ |# W' A% {: R4 B$ x7 O1 I0 P - (command "slice" "l" "" "zx" pttmp12 pttmp11)
3 r! j8 F i. `, ?/ X - (command "move" "l" "" ptStart (list (car ptStart) (- (cadr ptStart) threadpitch) (caddr ptStart))) , `" A. w. M- v( [
* ?& W5 P0 B7 T+ ~- ; 创建最小直径的圆柱体，然后与螺旋作交集
3 g1 ?2 E* k' Y1 m9 a- B! Q - (setq e (entlast))
0 Y6 d. N6 J: X2 n - (command "cylinder" ptStart "d" radinner "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart)))3 b/ r5 ^7 E5 w) s3 K m) ^$ k
- (command "union" "l" e "")7 f# e1 t( S0 }; U. o0 J3 b
- (setq tstmp (entlast))0 ]" y, q% b) X! q! ]5 w
- ; P; l. T# {' V- U
- ; 创建中空的圆柱体
! j& [2 M* _' T u& J& Y7 {3 X8 k - (command "cylinder" ptStart "d" radmid "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart))) ; minor dia: H2 B/ F9 d; W q) H m! d
- (setq e (entlast))5 ?+ U- T! _* V- ~
- 0 H. t. M* Y U; _
- ; 若最后创建45度的圆锥$ H1 m0 Z0 A* A {; k8 ^$ A
- (if (/= endcone "order")
# j9 }3 S$ v. s" p1 Q( t - (progn (command "move" "l" "" ptStart (list (car ptStart) (- (cadr ptStart) (/ (- radmid radinner) 2)) (caddr ptStart)))
s T7 `& a9 C% C - (command "cone" ptStart "d" radmid "a" (list (car ptStart) (+ (cadr ptStart) (/ radmid 2)) (caddr ptStart)))
# k$ B2 B+ t; Y+ v$ u - (command "move" "l" "" ptStart (list (car ptStart) (- (+ (cadr ptStart) (abs threadlength)) (/ (- radmid radinner) 2)) (caddr ptStart)))! t; h, P" Z9 p& Y9 _
- (command "union" "l" e "") " D5 P3 W# f9 i
- (setq e (entlast))
6 ~: r9 w# g. Z) R; h - ): ^( ] x$ H! q$ w$ D
- )
0 w. [' \; h" T2 `" B6 `) N7 ^
' {( h: f, b1 d5 y- ; 从大圆柱中减去小直径圆柱
- U" t/ l4 {' ]* S5 r0 V - (command "cylinder" ptStart "d" (* radmid 1.5) "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart)))% L+ B$ @) U9 O. d8 Q; Q; t
- (command "subtract" "l" "" e "")1 ?) {" v* L1 M$ _: _4 C' l9 ^
- (setq e (entlast))
+ G; p+ W2 D/ ]4 A! s - ; i F' g- \" G8 e, J" D* h
- ; 从螺旋中减去圆柱
. `1 x+ f3 Q6 h - (command "subtract" tstmp "" e "")$ T- y6 E* g/ A- {
' Z% k# C8 P( _9 U- c( D* }' n* [4 ?- {- d- ; 如果螺旋长度为负然后镜像
4 n! Q6 G$ k/ |- `& X - (setq e (entlast))5 t; @: ?/ S% l& _4 r" X' V3 M
- (if (< threadlength 0) (mirror3d e "zx" ptStart "y"))
/ x/ w5 y; y4 V2 y, `, ~$ q
, c* m% ^) u2 V5 b+ @ P6 _1 ]- (command "zoom" "p")
5 H- C$ g# G3 B/ h* V5 w - ; (command "undo" "end") ; 结束undo步骤, c. K8 G. z) v) ~' L s" F% j4 g* u3 S
- )
. I: t: B. Y5 g) _ - $ i0 V7 `2 }, V8 K2 o. t. `% z
- ;;;---------------------------------------------------------------------------------------------------------------------;
% u$ s O: a# `! [ - (arxload "geom3d" nil)' w! \) z9 x! y" m
- (princ "$ |2 `2 @& [: h3 n8 d2 x# f$ m6 n
- 3DThread 已加载。 ")
* k7 E/ C1 x3 o1 | - (princ)
* x, F6 O. {" U) f
3 b8 k+ @' h# ^5 p
0 Z% k6 K/ S7 M3 ^. G
三、弹簧源程序
3 m! Z' ^6 | K) U e, b% b, D- (defun errMsg (s) ; 当命令执行时出现错误
1 G+ B0 Q' P* L! k) E - ; 例如用户按下了CTRL + C" L2 ^3 f! f/ h! K: b: b# ^
- (if (/= s "Function cancelled")" a3 P9 J( c5 p$ ?8 V( M9 K
- (princ (strcat "
9 E* o5 n/ o y3 r. Z7 h - Error: " s)) M0 x+ m2 C4 _% ]2 |: e
- )
( X$ p4 n, q8 V6 d+ F, C4 |3 T - (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值
$ P! j: f7 V3 x4 s* `+ r - (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值5 Q( \- e! w" m" b5 N$ M3 z# N
- (setq *error* olderror) ; 恢复旧的错误处理
0 {! }8 e" [$ ^ - (princ)6 I+ X7 p4 L( k6 X/ K' [( g
- )- E! p4 @/ Z, g: [1 ^
- * b/ F* M: G1 c) Z; o0 v
- (defun spring (nRepeat cntPoint bhfac lr strad bvfac
9 c" b3 M* y! l2 Y+ F* j - / angle distnc tp aGrw dhGrw dvGrw Pi2 dv)
" Y0 I8 @! H3 h2 X6 t8 F2 M# _7 L - : ~; t S3 f- j4 \- }% R
- (setvar "blipmode" 0) ; 关闭 blipmode
; t0 q5 P- V7 f& @& e - (setvar "cmdecho" 0) ; 关闭 cmdecho
: K3 a5 e/ v) d! b - (setq Pi2 (* 3.14159265 2))
, M! v( S5 w7 k) ]2 ~2 y - (setq aGrw (/ Pi2 lr))
" Z, H- U9 r8 b( S5 x* s( l - (setq dhGrw (/ bhfac lr))
6 Q+ h8 S0 {1 ?$ E6 s4 J# W - (if bvfac (setq dvGrw (/ bvfac lr)))
$ t9 f3 k& n! x9 {5 X - (setq angle 0.0)9 ]# i- n1 @1 C8 E8 H* f) @
- (if bvfac1 j* ~, t _2 Z, A2 b7 |
- (setq distnc strad dv 0.0)* q) G; ^3 d0 m
- (setq distnc 0.0)
' j I& m' Y# x - )+ N$ _& |- X. s9 I" `, ]! L
- (if bvfac Z& U% j3 @# ~) w2 m( Y
- (command "3dpoly") ; 开始绘制弹簧
3 j% C4 _% A7 J, R6 }" @7 w - (command "pline" cntPoint) ; 从基点开始绘制弹簧9 P" g$ G+ c) f5 d% R
- )2 I% v6 `* d# A
- (repeat nRepeat 3 P# B1 H& R5 z7 h7 Q |
- (repeat lr
" k( _. w6 x$ a t7 p2 K* R - (setq tp (polar cntPoint (setq angle (+ angle aGrw))' [- X, j2 c: A
- (setq distnc (+ distnc dhGrw))6 O6 w a6 b0 j8 O7 `6 v- i* I
- )2 L/ u- p7 C+ | C
- )# F0 f" z- S: G
- (if bvfac
( w: U# z* l1 p ^ ?& }8 a% r1 E - (setq tp (list (car tp) (cadr tp) (+ dv (caddr tp)))
( J1 H! r6 Z7 N1 k. @ - dv (+ dv dvGrw)8 _" b" e5 y' B6 Q
- )4 b0 [! ]" b9 l# m! R. e9 ~3 l
- )
( |$ Y$ m: E( p4 E1 u6 t - (command tp) ; 继续输入下一点+ ^; g" K; n; n
- )# D2 {& n3 c/ T; ~* r2 D S% g% f
- ) 9 ~1 w# A: m3 h( g7 C4 s5 Q5 A6 g
- (command "") ; 输入结束! s/ Q* d; Z, L4 s
- (princ)% A) V+ _9 g; M) X
- )
9 y1 I. @5 E5 Q8 ^6 C5 {5 @+ |
2 @8 e- y: C# }" _( ]" I- ;;;
3 n [% l" c1 D( x& j/ ~) i - ;;; 生成三维弹簧函数调用接口
' N" W; ~$ N* K' }" _+ q1 I0 z - ;;;, B6 x* Z2 ~1 M& p: K0 ?) N
# u3 n6 d' @+ `- ^ [- (defun C:3DSPRING (/ olderror cmdch blpmd cntPt RottCnt horiGrw vertGrw bgnRdtn ptCntPerCircle) 5 }( R- R3 q0 ]& @& A. D, |: m5 B N2 w
- (setq cmdch (getvar "cmdecho")) ; 获取cmdecho值，以便调用结束后恢复6 w4 Z+ Q5 b& w& h3 ^4 R
- (setq blpmd (getvar "blipmode")) ; 获取blipmode值，以便调用结束后恢复
1 @0 f b- B" n6 B5 }# i" { L* i3 F - (setvar "cmdecho" 0) ; 关闭 cmdecho
; V# l& P# v0 P0 ?" w - (initget 1) ; cntPt 必须非空% P0 L; a7 _6 d" F! i2 s
- (setq cntPt (getpoint "
0 E- o/ R" _6 X! j5 T% V - 请输入底部中心点: "))
4 q- s% v9 l# |2 m; t! C - (initget 7) ; RottCnt 必须非零、非空,不可忽略
7 f9 ^9 w6 ?8 Q0 _9 ] - (setq RottCnt (getint "
$ N9 G7 R( Y: _5 D- _* ^% O - 旋转的圈数: "))
* N; W) s1 \1 F+ P+ [5 Z - (initget 7) ; bgnRdtn 必须非零、非空,不可忽略% P% }+ l# q7 ?: [4 `
- (setq bgnRdtn (getdist cntPt ". _- g% q" D% P+ w
- 起始半径: "))+ E m, B Z9 |/ Z' R8 F
- (initget 1) ; cf 必须非零、非空1 }7 a" A! _2 l" B$ J
- (setq horiGrw (getdist "
, u$ l7 D# R6 n: A$ J - 每一圈的水平增长距离: "))( ]- J. }* w Q7 o! j% U
- (initget 3) ; cf 必须非零、非空
, B: g3 v/ }5 \% K, e( s6 Q - (setq vertGrw (getdist "
* v. {! t& d5 B2 {7 g! F% n3 j - 每一圈的垂直增长距离: "))0 z4 T' [" E( t2 R* O4 }" W6 P
- (initget 6) ; ptCntPerCircle 必须非零、不可忽略: U' S! p8 @- x# a* o
- (setq ptCntPerCircle (getint ": k3 f2 Y7 ]2 |5 S4 H* ]
- 每一圈的插值点数<35>: "))
' | ?# k* @7 | - (cond ((null ptCntPerCircle) (setq ptCntPerCircle 35)))
! o4 W) N$ R, ^1 D) x' X4 K1 ] - (spring RottCnt cntPt horiGrw ptCntPerCircle bgnRdtn vertGrw)& _& l) }# G8 U9 D# }( m" H
- (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值, ?7 G) m& y, `9 P" I) p( i
- (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值
& @! D J- B1 L1 C$ {5 E - (setq *error* olderror) ; Restore old *error* handler
1 J0 k J2 T- m - (princ)( j |4 B, U6 z0 S2 a
- . k) C6 f" T) N1 M( I
- ) . Z3 R3 @& d: B" l0 N) x
|
发表于 2006-4-14 13:10
发表于 2006-5-5 10:43
