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, w/ C4 H) \0 ^8 |) M' W' \' B; a
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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：
# a2 C1 H/ H! P5 u- L/ J一、齿轮轮齿渐开渐开线6 T! u0 y9 X9 F' a+ @0 k3 s0 x* A
* l4 D, T: k% w' B+ u# I% Y- (defun c:gear(/)
9 e, M, |9 C* j+ B# c# N) F/ B - (
1 |' x, Y( t1 V6 i$ C9 @3 Z. R - setq5 {) }5 G! ?2 x
- p0 (getpoint"输入齿轮中心p0: ")) W y& f h! e( p2 C% \
- m (getreal"输入齿轮模数M: ")
# g( q5 k% [0 r - z (getint"输入齿轮齿数Z: ")
i, H; `( J9 M% q) J Y - ha 1
S J/ m- q+ i0 W; A$ D* k - c 0.25
9 Z0 f$ x, J1 q1 \ - a (/ pi 9)& q2 x& J4 x( S L; Y! }$ R- b
- ra(/ (* (+ z (+ ha ha)) m) 2)
' h6 x6 n2 T# L4 i - rf(/ (* (- z (+ (+ ha ha) c)) m) 2)
! Q3 I/ g6 I: i! r# V4 Y& N - r(/ ( * m z) 2)" n4 B1 J- y! e
- rb ( * r (cos a))/ ~7 Q6 K6 w; L/ |) m
- ri rb2 L- r0 C: I! @* q- O+ ^3 i( ^+ u
- ang 0 n6 v+ ?2 S* ^* o1 K6 w
- g (polar p0 ang rb)% `4 B0 n1 e" l" T- ^6 H
- )2 m* _! M# j r) o( L+ ^5 F: \
- (command "circle" p0 ra)
6 I, u2 e8 A2 e5 m/ n: j - (command "circle" p0 rf)
; A% h& m) T/ Z4 a/ g8 P; g7 s0 J - (command "circle" p0 r)
8 S. o" ]8 @" ]& S1 l - (command "line" g)
3 U- _' Z2 [! o: t, Q9 v6 \ -
( x# R4 i0 F$ u! _ R: B - (while (< ri ra)7 V% E/ K& h4 a: d6 [% o# w& s
- (setq
+ p* V) \& I2 L5 o- [9 }2 R - ang ( + ang(/ pi 360))9 R- Z' w0 i* J' N1 K/ S
- ri ( / rb (cos ang))6 c0 b6 g+ N: y* V/ x) m; Y- u
- cta ( - (/ (sin ang) (cos ang)) ang)% |. `$ u$ L& A3 E
- g(polar p0 cta ri): o2 `/ C/ ^- ~& R# j+ l: _& w4 r h
- )9 o9 n1 ?0 O, U5 v g# H
# p' Y8 g0 s. V' n0 ?- (command g)2 ~) }; X' J. w& v& f+ I% l6 O2 C
- )
0 b5 I! w: z& ]7 \% Q0 Z# o - (command )
: R1 q2 c7 s2 m# Y8 o0 D1 A2 a - )
' l0 s7 i# `4 j8 h7 X% B, ]
7 }; m! l' B% H, I+ @3 C7 [7 J$ }7 y) N+ A' U: B q
2 C& h/ s+ [5 A1 r2 F$ A+ |
二、螺旋源程序6 M& d( y0 @: k, J& w. \$ l
- J; }, _4 O: I( Y: d
- (defun errMsg (s)1 x+ B G0 j5 Z
- (if (/= s "function cancelled") (princ (strcat "( d& o N1 I b0 ]
- Error: " s)))* r7 `5 c/ @( w
- ; 当命令执行时出现错误( N( t6 Y4 z! w/ I
- (setvar "cmdecho" ocmdold) ; 例如用户按下了CTRL + C5 E9 ^" c. Z0 ]5 R: H2 B1 X6 i/ \3 \
- (setvar "osmode" osmold)- Q$ A. V7 w7 I0 ^) L
- (setq *error* olderr) ; 恢复旧的错误处理* w" d8 M( C2 V# d6 K9 z' ^
- (princ)' p1 D+ ~6 L- |6 c M
- )
* E9 l0 s# F" w4 q" U
2 g0 H0 z% k8 u3 C/ W' C- (defun c:3Dthread (/ radouter threadpitch threadlength threadangle
( D C/ Q( Z3 T: a - ptStart innerdiafactor radmid radinner ocmdold osmold 4H 5H 6H h6 g6)
+ h7 I! ?9 C5 c$ E ~* d - ;-------------------------------------------------------------------
) r, }+ v" Z& ~( h+ j+ W - ; 获取公制外径大小、螺距总长
' J( r) Y! w3 [$ p7 P - ; 然后计算一系列几何点0 k4 m- f- @. A$ U9 {
- ; 并且关闭对象捕捉、命令回显# w5 p0 |4 y; V8 A6 s% B
- ;-------------------------------------------------------------------
, ^1 E K! R8 x% ?( Y0 k - (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))
, j F# a8 _2 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)) # l$ y' v' S$ 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))
* f! H% r8 s/ S7 h3 \ - (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))
+ i3 T) W. f9 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)) 4 K) j* W0 H2 `0 \
8 V9 w$ Q, V* i: P- M- (setq osmold (getvar "osmode")) ; 保存调用前的osmode系统变量值
. k0 q7 `% b: P8 \+ h, R9 o6 v3 x - (setq ocmdold (getvar "cmdecho")) ; 保存调用前的cmdecho系统变量值
# r# R/ r2 O1 c. f- i/ j- q - (setvar "osmode" 0) ; 关闭对象捕捉 ' K, E" H$ z8 ]" J8 i/ J
- (setvar "cmdecho" 0) ; 关闭命令的回显" e0 D. d& N5 Z9 s, \ y
- 1 }* k& [5 m4 v( G% a
- (setq innerdiafactor 1.5) ; 设置内径系数* @# H& r7 W/ M) W. \: x N
- (initget 7) ; radmid 必须非零、非空、非负, E( D7 [$ w6 R" D
- (setq radmid (getdist "9 F, y7 {. k! J, \# N# W
- 公制外径: "))& w* b( B) S+ j; X' Q# e, T
- (initget 7) ; threadpitch 必须非零、非空、非负
2 K/ e% Y7 Y, _2 n/ G% F - (setq threadpitch (getreal "4 F- g% R% B2 r( e* v, E1 K
- 螺距: "))
9 `! c: j0 n, ]2 t - (initget 1) ; ptStart 必须非空
9 ~" G9 b. L# I! ?1 L - (setq ptStart (getpoint ") ~1 |. H8 X2 Z) S! M( y3 r
- 起始点: "))
7 I5 m: v6 v. E, x* C: B - (initget 3) ; threadlength 必须非零、非空、非负
% Y! C% F. N% ]3 @- {1 B3 h - (setq threadlength (getdist "
( ~7 n& \( k# N' W! M; K, s" u - 螺纹总长(Y方向): "))+ j$ m0 w9 r: z e2 ~0 r& l+ S" x
- - I" Y6 ]0 V; Y& ]5 W: N& b
- ; 对公制外径添加公差' `/ `) J/ S% P6 y7 E6 T F x* q
- (if (<= radmid 3) (setq order 0) ; 根据公制外径确定公差带中位置6 d2 Q, z& ^1 {7 E7 M" K9 \
- (if (<= radmid 6) (setq order 1)/ O7 D$ _5 g5 Y; U, W
- (if (<= radmid 10) (setq order 2)( z7 L- c! L: `/ [5 g
- (if (<= radmid 18) (setq order 3)& \0 t% r3 @$ u5 E
- (if (<= radmid 30) (setq order 4)
0 K& _$ d: T( j - (if (<= radmid 50) (setq order 5), h4 n6 E5 }9 c& c
- (if (<= radmid 80) (setq order 6)2 c/ T. B( C* o& b/ _& s! m g% S; l% R
- (if (<= radmid 120) (setq order 7)" G+ Z% C5 Y# z! y) M& E0 t+ f
- (if (<= radmid 180) (setq order 8)+ V3 ~( @+ n4 ^) Q& o( A: }
- (if (<= radmid 250) (setq order 9)9 u1 T5 \& v1 J" h& ~- g. J4 J7 C9 D
- (if (<= radmid 315) (setq order 10)- }0 |0 U+ _ ^( T
- (if (<= radmid 400) (setq order 11)
& D6 H1 L/ k% R! O$ f4 H - (if (<= radmid 500) (setq order 12)% }( d1 R: ^' K) M* U k6 N7 G9 A
- )))))))))))))5 S0 c5 \* j# _! K, ^
" |; z' Z4 q) @ t9 ~: j; x% u- (if (< threadpitch 0.25) (setq radmid (+ radmid (nth order 4H))) ; 根据螺距确定公差带
2 S# Q( T; E8 _& X5 J: p - (if (< threadpitch 0.35) (setq radmid (+ radmid (nth order 5H)))
0 X5 T3 C3 I- b1 j* \! j - (if (>= threadpitch 0.35) (setq radmid (+ radmid (nth order 6H)))
) r0 J' y, _$ v! `. s# q7 b - )))3 ^1 s' x5 W# G& B5 b F
-
& }( K) I2 `6 K6 y( q& ?, j - (setq h (* 0.866025 threadpitch)) ; 计算齿高) o9 m9 m7 R1 i- ~
- (setq radouter (+ radmid (/ h 4))) ; 计算外径- Q0 X% c% B; x5 ^/ P
- (setq radinner (- radouter (* h innerdiafactor))) ; 计算内径
) _4 q! a1 L2 w - (setq threadangle (+ 30 0)) ; 计算齿顶角
. F" r. Y8 T1 @) g3 S6 U* z - 5 P$ Y' r( M' V, D8 {# V) S
- (auxithread radouter radmid radinner threadpitch threadlength threadangle ptStart) ; 调用绘制三维螺纹的子函数& ?6 H/ x+ }0 e9 U
, V3 W" Y w0 ~- (princ "
$ C- r' j, p- \: D& c - 三维螺纹创建完成")
, A0 R: C( ?# E, e# t - (setvar "osmode" osmold) ; 恢复调用前的osmode系统变量值( W0 n0 R) G5 h; {# B
- (setvar "cmdecho" ocmdold) ; 恢复调用前的cmdecho系统变量值
9 o. }& K* ?6 y+ @ q" R$ E9 B - (princ)
* K3 m- c& l2 C. ?* v - )2 d3 }* Y" @+ X! F: x1 @! E) J
% @/ X0 D' c2 {& R$ E- (defun auxithread (radouter radmid radinner threadpitch threadlength threadangle ptStart / ttal pt1z ang pt1a# J% E& ~$ _" O
- pt1az pt3a pt1b pt1bz pt3b pttmp1 pttmp2 pttmp3 pttmp4 pttmp5 pttmp6 pttmp7 pttmp8 pttmp9 pttmp10 pttmp11 pttmp12 tstmp startcone endcone). V7 K/ F6 l. Y- e, r
4 w3 ^* {8 d6 x! c- ;(command "undo" "begin") ; 开始undo步骤
; Q, s. v/ X4 Z - 8 q+ Z$ p( r7 G! _- Y/ q
- (setq ttal (+ (fix (/ (abs threadlength) threadpitch)) 3)9 F+ A4 ?( }! z! ?+ y$ |8 _' J1 z
- pttmp1 (list (- (car ptStart) (/ radouter 2.0)) (cadr ptStart) (caddr ptStart))8 w" v+ c; C9 a& E3 ]/ U
- pt1z (list (- (car ptStart) (/ radouter 2.0)) (cadr ptStart) (+ (caddr pttmp1) 1.0))3 Q. k" F7 e) I6 v3 D) ?
- pttmp2 (polar pttmp1 (/ (* threadangle pi) 180.0) 1): S: [4 f8 I8 K$ ?: L4 f
- pttmp3 (list (+ (car pttmp1) radouter) (+ (cadr pttmp1) (/ threadpitch 2.0)) (caddr ptStart))
6 E& d, b& k( {6 n - ang (angle pttmp1 pttmp3)0 v7 O4 ^1 Q6 s- f' L
- pt1a (polar pttmp1 (+ ang (/ pi 2.0)) threadpitch)
, X) o* i. ]! U& v/ D' ]" m D - pt1az (list (car pt1a) (cadr pt1a) (+ (caddr pt1a) 1.0))' z( N! d }' |" {2 H* G, V1 k
- pt3a (polar pt1a ang radouter)
" J" m, R' f0 G: [! @ - pt1b (polar pttmp1 (- ang (/ pi 2.0)) threadpitch)1 U2 q3 E* @, p; y
- pt1bz (list (car pt1b) (cadr pt1b) (+ (caddr pt1b) 1.0))
! w9 v( r1 J: `. ]4 ?) @! p - pt3b (polar pt1b ang radouter)
/ h9 v5 D0 C) n7 A - pttmp4 (polar pttmp3 (/ (* (- 180 threadangle) pi) 180.0) 1)2 A3 M9 E) p- f
- pttmp5 (inters pttmp1 pttmp2 pttmp3 pttmp4 nil)
. [$ }! J; D# {1 j R' o% @6 Z2 k - pttmp6 (list (car pttmp5) (cadr ptStart) (caddr ptStart))9 a+ s% B9 C! b( x, u) W
- pttmp7 (polar pttmp1 (/ (* (- 360 threadangle) pi) 180.0) 1)1 T. J' h y: `, x. y
- pttmp8 (polar pttmp3 (/ (* (+ 180 threadangle) pi) 180.0) 1)5 t+ Q* a% ~8 J) L6 D3 `2 [
- pttmp9 (inters pttmp1 pttmp7 pttmp3 pttmp8 nil)
" z( ^, `; G- T5 g: K; P# S W - pttmp10 (list (car pttmp9) (cadr pttmp3) (caddr pttmp3))
4 g* D+ X0 k3 l' }8 {" [$ A - pttmp11 (polar ptStart (/ pi 2.0) threadpitch); q& B3 {8 o: O- W
- pttmp12 (polar pttmp11 (/ pi 2.0) (abs threadlength)). I, D6 M# C: w, ?5 |* l
- )) A5 h* q9 D }) T$ a' }0 U; V$ V
/ i3 \8 E/ s4 C8 O5 G- ;-------------------------------------------------------------------
+ b4 _' y3 x7 w. N6 A - ; 绘制两个倒置的并偏移1/2螺距的圆锥
& F$ r q: P# E0 J9 T - ; 这两个圆锥都以中剖面剖分
2 J6 \& v" n( e) J, X - ; 进行并集运算
+ m9 b7 v c7 d8 M4 I" U2 ? [ - ;-------------------------------------------------------------------
w( D/ f5 D0 d: H8 v4 \& v - 1 f' R, h" b7 N& q
- (SETQ startcone "order")
; Z8 H; R) L0 Y- B' V - (SETQ endcone "Y")
4 c7 K7 ?3 { K2 @ - (command "zoom" "w" (list (car pt1a) (+ (cadr pt1a) (abs threadlength)) (caddr pt1a)) pt3b)
5 ^) [1 V! K s9 D
6 }+ B# V3 L3 s. o- D1 S! _0 \" d- (princ " f9 V7 _& K- k; |. e
- 正在绘制三维螺纹，请等待")3 `7 J7 N$ C: F
- (command "pline" pttmp1 pttmp5 pttmp6 "c")9 I) y# e3 z* v! f; s4 d
- (command "revolve" "l" "" pttmp5 pttmp6 "")3 m7 j. r4 {& u- }
- (command "slice" "l" "" pttmp1 pttmp3 pt1z pttmp5)
. w. k% E$ p/ ^: m# v9 ?0 S* G. o - (command "slice" "l" "" pt1a pt3a pt1az pttmp3)
& f1 \) A! e5 w% L1 `8 @8 C) `$ O - (setq tstmp (ssadd (entlast)))
8 \% m8 }& f" W" N! s - (command "pline" pttmp3 pttmp9 pttmp10 "c")" s$ I9 [, y# K$ d E
- (command "revolve" "l" "" pttmp9 pttmp10 "")
% E! A* _, N& X& \2 n - (command "slice" "l" "" pttmp1 pttmp3 pt1z pttmp9)! Y/ b; p6 N# {3 `5 R
- (command "slice" "l" "" pt1b pt3b pt1bz pttmp3)
) v9 J- d. A/ Y* r$ ? - (setq tstmp (ssadd (entlast) tstmp))6 V6 Q; ` ~: x) y
- (command "union" tstmp "")- N- s- B& F* D( |8 V
0 H3 s$ v" c' k4 E) @# s- ;-------------------------------------------------------------------4 y& j1 [2 K# o) t
- ; 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 G0 y/ N) m- \- Q$ r
- ; 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
2 t/ n/ l' B7 O7 M0 R( Q' P - ; 在最后一步被切除
$ u6 W) W4 a( a) q F8 N+ H5 Q# h - ;-------------------------------------------------------------------
" l& t- Y" [* j0 X5 u - 7 e5 ]0 X+ z) L- b& c4 w* A' Z5 |
- (command "slice" tstmp "" "xy" ptStart "b"). O3 |1 Y9 W7 |
- (setq tstmp (ssadd (entlast) tstmp))
8 R7 r/ R9 n. E& H! z - (command "mirror" "l" "" pttmp1 "@10<0" "y")
3 w0 }9 S8 {7 `& T- C, q - (command "union" tstmp "")% y @9 [ o6 w* Q. z4 I
- 9 H5 |$ }: x7 a! U6 g# R
- ;-------------------------------------------------------------------- o7 C0 _8 w/ p9 | \
- ; 螺旋进行阵列操作，然后再作并集（可能会耗费一定时间）6 G! g! B% K% ?! h
- ; 得到的实体再切除到指定的螺旋高度
; l4 j) A1 b+ q; @% J. O - ;-------------------------------------------------------------------
- m* U7 p3 C/ _ L) X$ N$ b# Y4 I
8 o$ G6 v+ M0 d3 b( e- (setq e (entlast))
; c( s4 |- ]+ g& t: `0 C - (command "array" tstmp "" "r" ttal 1 threadpitch)
8 ~% l' `9 q; J% R- A - (repeat (1- ttal)+ Z* L7 w/ S6 X$ G/ U7 _
- (setq e (entnext e)
5 `& k, ~ M. E - tstmp (ssadd e tstmp)' M% C: Q& Z6 D! K6 f
- )
& T0 V: u8 d S# O - )
2 b/ d6 X2 K4 [& N - (command "union" tstmp "")
7 u" `, ?2 Q Y2 s* Q
- t, V, H9 k& x3 c1 Q. u- g6 \# \- ; 若开始创建45度的圆锥1 R& F8 o% R2 d- P( R I
- (if (/= startcone "order")
# i+ K- w) Y7 e" I9 M - (progn (setq e (entlast))
' j" a; ?1 c$ P0 e# D! ] {) W - (command "cone" (list (car ptStart) (+ (cadr ptStart) threadpitch) (caddr ptStart)) "d" radmid "a" (list (car ptStart) (+ (+ (cadr ptStart) (/ radmid 2)) threadpitch) (caddr ptStart)))/ h: k' L9 D! Z( d1 y1 O
- (command "union" "l" e "")
; Z3 e# p, t/ k, ^ - )
# S. ^2 E4 P' w - )
+ i. o% b, R5 O3 l; s5 \( Z/ o
. i4 A" e1 H( v7 k+ G7 e' y- (command "slice" "l" "" "zx" pttmp11 pttmp12); Z! J% D. [& A) M3 ?% Q" x
- (command "slice" "l" "" "zx" pttmp12 pttmp11)
2 h: b) ^) n; y, n% x6 K - (command "move" "l" "" ptStart (list (car ptStart) (- (cadr ptStart) threadpitch) (caddr ptStart))) - {+ g+ ]" F$ L/ |
- 7 e) i$ L; N8 u( h$ B
- ; 创建最小直径的圆柱体，然后与螺旋作交集' A, \. B' T4 ?9 t: A. x3 ]
- (setq e (entlast))
; v2 x4 x$ s2 L2 N - (command "cylinder" ptStart "d" radinner "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart)))
9 p b5 u. S8 _ - (command "union" "l" e "")
$ v( O* e9 a/ l( t" O8 R - (setq tstmp (entlast))4 ?' ^5 l( l8 E
- - v8 Z/ I" v" S1 C
- ; 创建中空的圆柱体
8 q, g$ F( W, Y0 T+ t" R - (command "cylinder" ptStart "d" radmid "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart))) ; minor dia
$ Z1 {) T7 r% h4 m5 u" P+ v - (setq e (entlast))
D% ?1 p; X' ^- _
; T( i- W u0 t# A& |; \- ; 若最后创建45度的圆锥
" i h% n( K: Q - (if (/= endcone "order")
7 Z; U4 q* w( q* k6 k/ h+ o* h3 R - (progn (command "move" "l" "" ptStart (list (car ptStart) (- (cadr ptStart) (/ (- radmid radinner) 2)) (caddr ptStart)))
% w! |' p4 ]& c9 v: ?9 G- [% l - (command "cone" ptStart "d" radmid "a" (list (car ptStart) (+ (cadr ptStart) (/ radmid 2)) (caddr ptStart))) 5 l7 @8 d7 m3 g2 s, l( n6 J' V8 [+ N
- (command "move" "l" "" ptStart (list (car ptStart) (- (+ (cadr ptStart) (abs threadlength)) (/ (- radmid radinner) 2)) (caddr ptStart)))
0 R# G+ h, I7 D# B* v a0 s - (command "union" "l" e "") : p, T7 z4 N1 N9 K5 T# }, |- e
- (setq e (entlast))( h5 l3 P- A0 U9 R+ ^
- )
9 M3 Y" k9 Z0 {# q, G D# j - ). ~! e' g0 l9 L( z h [- j
' v, T y3 f+ [0 u+ [/ J- ; 从大圆柱中减去小直径圆柱
t. j$ ~- L2 J8 V! P$ D - (command "cylinder" ptStart "d" (* radmid 1.5) "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart)))8 }9 E- ~$ h% r" l
- (command "subtract" "l" "" e "")
- o0 w. e% m1 f" D- x - (setq e (entlast))
8 w% R+ R9 b: x* z3 j6 x* u$ w
3 X/ P# _. S. G" v6 U- ; 从螺旋中减去圆柱: x3 `* z1 W3 `7 `2 h
- (command "subtract" tstmp "" e ""): o/ k7 B V) y& k3 X0 X
- 9 C; ?0 U) I \. v) [" ?7 R0 l; i% E- O
- ; 如果螺旋长度为负然后镜像
$ C' e' v' T: P" Q2 V - (setq e (entlast))
8 E# u L2 I5 w0 C4 l - (if (< threadlength 0) (mirror3d e "zx" ptStart "y"))' z9 }0 F' Z9 A7 J
1 V# z& ]9 v1 Z+ t# f- (command "zoom" "p")" z5 a2 P2 D, S) L
- ; (command "undo" "end") ; 结束undo步骤
+ O; F$ O" E6 S; Z9 Z - ), V" j! L+ F9 M. N3 x
- . d: J! x! M [3 h( g
- ;;;---------------------------------------------------------------------------------------------------------------------;
' f( o2 j: @1 Z3 l7 u - (arxload "geom3d" nil)# D' q2 R9 }' V# h5 I; X, L, G
- (princ "7 r% H% Q9 c* h( Q, Z [
- 3DThread 已加载。 ")( @! s) ?8 z5 O6 l# L/ O
- (princ), w' A/ m, f; _) J2 [' F
; h: X2 I3 s9 T) y) B
I$ V( T1 d1 o- X+ d三、弹簧源程序" B) K+ g& @1 ^0 T; f% |. x
- (defun errMsg (s) ; 当命令执行时出现错误 Q$ L; |* r8 w6 G) a/ W
- ; 例如用户按下了CTRL + C: P, l7 o% U5 V7 x6 i4 T
- (if (/= s "Function cancelled")1 a7 l. J! S$ Y- Y' ^
- (princ (strcat "; |- \9 i0 a7 ]+ X, F4 n$ l$ v
- Error: " s))/ R: m( [1 B5 x' \5 T
- ); A, t. Q3 b7 p# A2 R, c, F# D6 ?
- (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值
" t8 J5 d- @$ S4 v8 F9 W d) Z - (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值, k( ]' g- | c$ c, F: h3 v4 N5 m9 c) v
- (setq *error* olderror) ; 恢复旧的错误处理
5 F u M/ i& {9 y A& L - (princ)
3 P/ @7 ?0 k7 R/ y0 e) F' @9 q - )+ i! B2 f% [* p; P; O
- & A9 {! J; M; R9 ?5 i
- (defun spring (nRepeat cntPoint bhfac lr strad bvfac
M9 ?7 \* C( R4 ^0 D; p - / angle distnc tp aGrw dhGrw dvGrw Pi2 dv)/ W8 [) l' N3 \5 q. N
9 C/ ?1 q. v | a. c% d s( K- (setvar "blipmode" 0) ; 关闭 blipmode
6 Z0 a! ^ t \+ d% f" i5 a) X4 o - (setvar "cmdecho" 0) ; 关闭 cmdecho
7 H3 F0 C, r. ~2 _2 k, _) R - (setq Pi2 (* 3.14159265 2))3 B3 P0 h* F/ @$ l0 i' K# y
- (setq aGrw (/ Pi2 lr))+ C8 }/ x$ v }' J# w1 o* V
- (setq dhGrw (/ bhfac lr))
0 t# Q! ^+ ^' ^: a - (if bvfac (setq dvGrw (/ bvfac lr))) i% W+ K% F3 J2 F: m( P* Z+ n! g: T
- (setq angle 0.0)3 g5 R+ G9 ~5 ?. X" O0 L7 f
- (if bvfac
8 ?# j) _0 Y# q0 e( F4 w2 H& R+ M$ i, P - (setq distnc strad dv 0.0)8 {6 c5 r; k4 U
- (setq distnc 0.0)
6 I& Z4 F- c. `, H- r - )5 q0 G3 q% _! N4 w& x+ Q& G
- (if bvfac
- L, Y* q5 T/ j& x" \ - (command "3dpoly") ; 开始绘制弹簧
7 W! F+ d2 p' C7 _# N, Y - (command "pline" cntPoint) ; 从基点开始绘制弹簧 e4 G1 h; n8 p# O( d; {' X
- )
; c' V* K. i& e: v6 R - (repeat nRepeat , `: L9 H9 _! M
- (repeat lr ; l# X0 K- c% c( L* x( Y
- (setq tp (polar cntPoint (setq angle (+ angle aGrw))$ d4 H+ [: a- M6 n2 h" [5 X# y' J
- (setq distnc (+ distnc dhGrw))
* n$ k9 b' c: q8 o' l1 {* M0 r - )
1 n, ?$ q7 V2 ]. z+ V - )
! G/ k% c! {5 i7 I8 C4 {3 U - (if bvfac( ~) v6 B2 _# s8 \0 _9 G
- (setq tp (list (car tp) (cadr tp) (+ dv (caddr tp))). |" g* f% W1 F# F" d, p
- dv (+ dv dvGrw)
% V9 O2 v. Q+ f! S% @$ Z - )! c& z( |" q' ?! Q5 J" M; ~3 b
- )
- d) `% f9 \/ b8 J" x& O - (command tp) ; 继续输入下一点
/ b: W3 x1 a# M% a7 `6 @ - )
$ E4 |+ i* x% w+ s - ) ; L8 {) }- s/ o& T X
- (command "") ; 输入结束
9 k+ ~/ V$ ]2 { - (princ)
0 Y# R: f! Z4 ]* {' Q, k - )
# w r! [" g: [' J0 O% _1 d - % Q& z1 k$ X6 _. O8 J9 P2 X3 J
- ;;;
" ]( y$ T" X# r2 E, k - ;;; 生成三维弹簧函数调用接口
5 p7 ]9 A5 x0 L1 w - ;;;
! u) S# v7 x K
9 w6 s, O- {$ ?) e, L- (defun C:3DSPRING (/ olderror cmdch blpmd cntPt RottCnt horiGrw vertGrw bgnRdtn ptCntPerCircle)
; ]9 y \4 X. s% r( H - (setq cmdch (getvar "cmdecho")) ; 获取cmdecho值，以便调用结束后恢复: C. W! l( g, a4 F) _' G2 t2 K
- (setq blpmd (getvar "blipmode")) ; 获取blipmode值，以便调用结束后恢复
9 R, {! w) P# n% |" V: W' E. N+ i# {7 P - (setvar "cmdecho" 0) ; 关闭 cmdecho * w l* y; d. V" B
- (initget 1) ; cntPt 必须非空
: w; E) r6 k S - (setq cntPt (getpoint "
; C; W# ^2 ~8 K& T% c8 J5 S - 请输入底部中心点: "))
- d$ \' j6 L8 p" w) R" a - (initget 7) ; RottCnt 必须非零、非空,不可忽略6 v3 ~2 E2 h) j" ^( }
- (setq RottCnt (getint "
# b. j& Z. I) X6 Y1 O! G# ], G# l - 旋转的圈数: "))
6 v: u" C! _* M7 |; \+ b* ? - (initget 7) ; bgnRdtn 必须非零、非空,不可忽略8 x1 c" l& m/ U8 Q, ]! H
- (setq bgnRdtn (getdist cntPt "
4 s# h0 A# K4 i) S - 起始半径: "))
$ C5 w0 A4 D, u( Q" M% N$ v! m - (initget 1) ; cf 必须非零、非空
! L. E' O8 m2 P8 o - (setq horiGrw (getdist "
+ y7 _* |3 f, @4 B - 每一圈的水平增长距离: "))
6 P# _+ F+ \5 W* {5 | - (initget 3) ; cf 必须非零、非空 w* N- S# n/ d# P; N1 m& O
- (setq vertGrw (getdist "
: ?+ w3 ]4 \& s. `6 y - 每一圈的垂直增长距离: "))' r, M X% f' R9 v0 d* ]9 U' F% a( ]* W
- (initget 6) ; ptCntPerCircle 必须非零、不可忽略7 o0 k% n* c: k
- (setq ptCntPerCircle (getint "
; f* o- e0 D9 r% c) K - 每一圈的插值点数<35>: "))
0 A; E: v) t7 k* @. N' d - (cond ((null ptCntPerCircle) (setq ptCntPerCircle 35))) ! v9 |( R; m, p! B2 L" r9 b" P
- (spring RottCnt cntPt horiGrw ptCntPerCircle bgnRdtn vertGrw)
- g+ B* D( K1 q - (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值: d, k2 b- `/ V
- (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值# z# c0 `1 H% o; F5 B
- (setq *error* olderror) ; Restore old *error* handler
! ?3 \# {( o5 B4 Y# c7 h% m - (princ)6 q* Y7 ]2 v) b
- + d P @8 ] c$ v8 o3 @
- )
& V1 Q7 R& b% ~8 V
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发表于 2006-4-14 13:10
发表于 2006-5-5 10:43
