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! v+ t8 t! l7 T0 t) Z6 ^0 o+ L; g
/ [# }8 s4 |6 a, Q7 Z% F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：3 @- c: ?, _$ F2 X! l c
一、齿轮轮齿渐开渐开线4 h3 I3 l3 b9 F3 y3 |% s
- 8 {9 |6 _8 S. c# y! H) i6 B
- (defun c:gear(/) A4 _; X, i+ {$ [7 t) I3 v% v, v
- (7 w! x; Z7 B6 D; g7 ]6 T5 s0 l
- setq
7 W3 q1 M4 k/ x$ g* u1 d - p0 (getpoint"输入齿轮中心p0: ")3 \, A9 Z; E0 z p8 z! K6 Y
- m (getreal"输入齿轮模数M: ")
: C/ N' x R: g( w) M - z (getint"输入齿轮齿数Z: "). i% a r; h; l2 M& T
- ha 1! G7 M8 b' d8 `
- c 0.25' @; l. p, `6 k3 _2 o' o3 C
- a (/ pi 9)1 e; K5 R) x2 P# k; [1 M- b
- ra(/ (* (+ z (+ ha ha)) m) 2)$ m6 @0 W$ \2 n8 y/ e" H
- rf(/ (* (- z (+ (+ ha ha) c)) m) 2)
2 D# P& R2 [4 ` - r(/ ( * m z) 2)/ [* g$ O! J% z( H+ s$ m" M# i
- rb ( * r (cos a))9 P! Y2 F6 T3 q2 M4 S8 f
- ri rb' Y1 x' _6 ?- R. q2 Z
- ang 0
2 _1 A( \" k) p- N, r - g (polar p0 ang rb)
: J1 a! F! n+ b/ x6 ]% @ - )0 `& R5 A* Z; Q& F
- (command "circle" p0 ra)! P; }5 d* X% a$ A F* @1 U# ^
- (command "circle" p0 rf)
4 B# M( L& ^* A - (command "circle" p0 r)
2 X; j3 C' k: g2 i( H0 y - (command "line" g)
% C6 N8 l* `0 B( R8 J0 p -
2 l2 \% u( F/ w, R4 } - (while (< ri ra)
9 L- x8 U: [& W A, x2 y! o& I - (setq
+ u5 Q' ]' {0 @( Q6 R - ang ( + ang(/ pi 360))# U, |# c f! @" e, }/ u& g
- ri ( / rb (cos ang))
; e& S$ P8 u/ ] - cta ( - (/ (sin ang) (cos ang)) ang)+ p0 A' J- P+ u
- g(polar p0 cta ri)3 G- t0 U% H& {- R# r
- )% | M4 ?2 l; |2 d* M" B* y
) |0 n; D5 i6 n) ]( r! x ^- (command g)
7 T* P5 X5 d! y% j. H; F - )
/ ]0 K% M8 k+ L" r7 [! H- W4 l3 P - (command ) , I' G8 ^5 B/ E. }' x2 @7 \$ g
- )
+ x! h V5 @1 L; ]: D& J
& ~7 R8 d) L/ E Y( G1 J2 ~$ ~( f# p$ q6 k
% C C0 r) J2 V' x7 `& ~
二、螺旋源程序
# g9 {5 l4 O" D8 w, D) k6 g
9 l6 A2 l, W/ W- (defun errMsg (s)
& a/ \2 v2 [+ p$ ], H6 ]1 q( B* ? - (if (/= s "function cancelled") (princ (strcat "6 d2 r1 X: i( h$ V+ c3 y! z
- Error: " s)))
8 G+ t9 t' n: _! T- i& k4 C/ c - ; 当命令执行时出现错误! ~$ v& c8 I! d9 L+ O* |" M% Y+ J
- (setvar "cmdecho" ocmdold) ; 例如用户按下了CTRL + C
& o) x+ b7 g) C3 H - (setvar "osmode" osmold)- d0 P, B+ Z! @7 U0 I* P* \ `
- (setq *error* olderr) ; 恢复旧的错误处理, Q6 g! E: S# g6 [
- (princ)
. y/ O7 f+ w7 r8 K' l: E - ); q5 [% ]" ~4 Z9 \& } h) [
- - d0 c! ~# a0 T! b6 f
- (defun c:3Dthread (/ radouter threadpitch threadlength threadangle
1 B: S% o! \# J - ptStart innerdiafactor radmid radinner ocmdold osmold 4H 5H 6H h6 g6)
$ a1 L, H' N: y) v5 A2 ^5 X - ;-------------------------------------------------------------------! g( i% R9 Q% _: \% I
- ; 获取公制外径大小、螺距总长
" [9 \: J' }# M1 \ - ; 然后计算一系列几何点
6 A" }+ p# L E8 { - ; 并且关闭对象捕捉、命令回显
, h- I: E6 V; |) W% ~; H - ;-------------------------------------------------------------------3 G" ] ?7 t s1 A4 s
- (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))
K0 |4 v9 P& r' ?( ? - (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)) 0 x3 \$ H& p2 M5 O
- (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)) ; M/ G! r9 |1 ?$ C- D- Q5 O
- (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))
, c" w# G( [ y. p; H, W& p+ o! L9 \ - (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 p3 Y8 f! H, }* u1 p
- % Y3 k4 C' ?' [% k( \% N
- (setq osmold (getvar "osmode")) ; 保存调用前的osmode系统变量值
; n- d1 T) ]: M* c) ]3 A - (setq ocmdold (getvar "cmdecho")) ; 保存调用前的cmdecho系统变量值
/ w# @" \/ b- B8 s* {/ k8 q - (setvar "osmode" 0) ; 关闭对象捕捉
0 b; \' P& a6 K9 V - (setvar "cmdecho" 0) ; 关闭命令的回显 v! j- H: [$ e/ {4 g. p
- . R! \) @8 l5 S R, {1 F
- (setq innerdiafactor 1.5) ; 设置内径系数" j I; ^6 L9 \( s, ]1 T+ J
- (initget 7) ; radmid 必须非零、非空、非负0 I4 P0 x, f x7 G
- (setq radmid (getdist "2 o u% g" Q) Z; ?
- 公制外径: "))% D, D) Z+ D4 ^
- (initget 7) ; threadpitch 必须非零、非空、非负
( _: h6 r* Q1 H( h! f; p - (setq threadpitch (getreal "
V- a; a. z# g$ i - 螺距: "))9 z' `; f" l: }4 k; x
- (initget 1) ; ptStart 必须非空
. I5 y# ^( _+ _4 c - (setq ptStart (getpoint "
3 H+ t: L1 _, u! l5 ?. I - 起始点: "))2 P- C/ R" ~: ~' F) K9 D
- (initget 3) ; threadlength 必须非零、非空、非负
# y, |& X8 Y& N) o - (setq threadlength (getdist "
0 v, n/ j: A) }% u/ G) c7 I6 P) ~$ H - 螺纹总长(Y方向): "))
5 }+ q1 e, X+ u8 ~3 [9 B# l1 { - i H- I2 x4 Y$ ~0 A7 l7 @
- ; 对公制外径添加公差
( W2 S, D. ~; G) L" B - (if (<= radmid 3) (setq order 0) ; 根据公制外径确定公差带中位置
( |6 }- c2 S9 W - (if (<= radmid 6) (setq order 1)! R1 g* E5 h0 C; @: ^
- (if (<= radmid 10) (setq order 2)
) y4 f- h: w/ [" v0 D8 a( q* n' D- ~ - (if (<= radmid 18) (setq order 3)
7 p" Z& U, j0 Q3 E+ M5 j* ~ - (if (<= radmid 30) (setq order 4)1 U& s; j, m/ Y
- (if (<= radmid 50) (setq order 5)
& U; t# o+ B5 F& X8 F H - (if (<= radmid 80) (setq order 6): f2 M5 Y& M7 \, n$ h$ n/ x
- (if (<= radmid 120) (setq order 7)
0 s" a# V3 }( X - (if (<= radmid 180) (setq order 8) i" z: `0 {8 F4 ?' V
- (if (<= radmid 250) (setq order 9)- l! x2 Y5 K' I) V% ^2 D& `1 }+ [; r
- (if (<= radmid 315) (setq order 10)
4 W5 L2 f/ p. O' F$ W& D& `2 N' q# I - (if (<= radmid 400) (setq order 11)
( V' {9 L% m0 }# i - (if (<= radmid 500) (setq order 12)
- s; ?! L; ^* ~0 G3 r) u6 F2 L - )))))))))))))& c# S! Z9 H1 Y4 Z( r9 e- j# L$ Z
- ! d: T+ |* j8 R, |. h. D
- (if (< threadpitch 0.25) (setq radmid (+ radmid (nth order 4H))) ; 根据螺距确定公差带
0 q" I. o, u- v' [1 k% l# @/ v - (if (< threadpitch 0.35) (setq radmid (+ radmid (nth order 5H))). p) x0 u% h+ O6 v) g
- (if (>= threadpitch 0.35) (setq radmid (+ radmid (nth order 6H)))3 J1 F, F4 z$ }) j4 \# j
- ))) \1 V4 q0 n/ j, c% G- m) S# t
- $ u/ l( `* B7 z0 [# @- o
- (setq h (* 0.866025 threadpitch)) ; 计算齿高
% I, b* q: g; }. Z, y* F: R - (setq radouter (+ radmid (/ h 4))) ; 计算外径% O7 Y) |6 y+ Y; D# }; q2 ~
- (setq radinner (- radouter (* h innerdiafactor))) ; 计算内径
x+ U' A: r$ t; P" t6 r - (setq threadangle (+ 30 0)) ; 计算齿顶角1 Z+ n. I* r/ J% A
- 0 ?$ ?& h- g5 y5 J. e/ @0 T
- (auxithread radouter radmid radinner threadpitch threadlength threadangle ptStart) ; 调用绘制三维螺纹的子函数* y# g5 y) d- l' T* ?) e9 @! u
- 9 A& d0 b( Q( {* O+ y: C1 i. q
- (princ "5 q6 _' k+ o$ e& o. _
- 三维螺纹创建完成")3 e5 m/ w( r1 x8 A( o
- (setvar "osmode" osmold) ; 恢复调用前的osmode系统变量值5 ?4 q( U9 [9 m0 Y' s# Z
- (setvar "cmdecho" ocmdold) ; 恢复调用前的cmdecho系统变量值
" R# b3 R8 Z; L3 J+ Y* i0 n - (princ)
2 x- s" j& v/ J0 T8 w - )
4 V. N1 m6 Q3 C1 o' S
3 N+ Q9 E8 F3 l4 s- (defun auxithread (radouter radmid radinner threadpitch threadlength threadangle ptStart / ttal pt1z ang pt1a$ U: w; y- B; b- O1 P
- pt1az pt3a pt1b pt1bz pt3b pttmp1 pttmp2 pttmp3 pttmp4 pttmp5 pttmp6 pttmp7 pttmp8 pttmp9 pttmp10 pttmp11 pttmp12 tstmp startcone endcone)
|4 w& \. W' G0 X. V+ G$ \
, K1 r' |* B# K) W- ;(command "undo" "begin") ; 开始undo步骤
e' Z4 F9 g: }. k8 N - + Z$ x# m* x- l0 F9 T7 Z
- (setq ttal (+ (fix (/ (abs threadlength) threadpitch)) 3)
' [+ O0 t0 s+ t - pttmp1 (list (- (car ptStart) (/ radouter 2.0)) (cadr ptStart) (caddr ptStart))
6 r+ r6 `8 m% {. c - pt1z (list (- (car ptStart) (/ radouter 2.0)) (cadr ptStart) (+ (caddr pttmp1) 1.0))% v, W) Q$ q9 i
- pttmp2 (polar pttmp1 (/ (* threadangle pi) 180.0) 1)
. C/ w- f9 X/ s2 q5 Y6 J - pttmp3 (list (+ (car pttmp1) radouter) (+ (cadr pttmp1) (/ threadpitch 2.0)) (caddr ptStart))5 ]: t- I- `$ c: }6 K
- ang (angle pttmp1 pttmp3)4 i' A% _/ E# q$ ~$ S# {: p
- pt1a (polar pttmp1 (+ ang (/ pi 2.0)) threadpitch)
; T0 O' p) m2 B+ k) x | - pt1az (list (car pt1a) (cadr pt1a) (+ (caddr pt1a) 1.0))& H# P" h/ P' r1 U" i
- pt3a (polar pt1a ang radouter)9 S8 A4 _1 Y! L* j+ c0 y
- pt1b (polar pttmp1 (- ang (/ pi 2.0)) threadpitch)' e: {# F+ O' K7 ~" g- d" n
- pt1bz (list (car pt1b) (cadr pt1b) (+ (caddr pt1b) 1.0))/ l4 @3 a: f# S5 A( ? x. ~
- pt3b (polar pt1b ang radouter)0 S3 J- T) r$ X. S5 Q
- pttmp4 (polar pttmp3 (/ (* (- 180 threadangle) pi) 180.0) 1)
0 w4 z! E$ C' V, x( T - pttmp5 (inters pttmp1 pttmp2 pttmp3 pttmp4 nil)
1 F, W% h0 [- j - pttmp6 (list (car pttmp5) (cadr ptStart) (caddr ptStart))
1 }5 k! V# F) \ - pttmp7 (polar pttmp1 (/ (* (- 360 threadangle) pi) 180.0) 1)
8 Z# P* g) b7 A9 h" x% a - pttmp8 (polar pttmp3 (/ (* (+ 180 threadangle) pi) 180.0) 1)
" h3 z. w6 ]) {' k# W# Q - pttmp9 (inters pttmp1 pttmp7 pttmp3 pttmp8 nil)
( q0 Z, k+ O* q4 ` - pttmp10 (list (car pttmp9) (cadr pttmp3) (caddr pttmp3))' G6 ~- r7 N9 d
- pttmp11 (polar ptStart (/ pi 2.0) threadpitch)
% v7 n8 z- R% g" c - pttmp12 (polar pttmp11 (/ pi 2.0) (abs threadlength))
4 m% g) i9 h5 M; {; \9 j' |6 n1 b - )
# {' s; N5 d- F" H; {% b/ O; X/ \ - G' F, H0 N, D8 X9 F ^
- ;-------------------------------------------------------------------
5 E2 x/ p4 X: l3 k: J - ; 绘制两个倒置的并偏移1/2螺距的圆锥8 G" m9 h+ t; K$ V7 ^0 _
- ; 这两个圆锥都以中剖面剖分
4 ~3 k/ `% S2 D- B! V - ; 进行并集运算
0 P! i6 d! g7 C) U - ;-------------------------------------------------------------------" E0 t, n# @* w9 n& d% W; p; \2 S
- 3 d, s4 W2 I: K
- (SETQ startcone "order")- v) l7 r" T4 b, E& \
- (SETQ endcone "Y")
8 c2 a! l9 N L$ q2 t9 a - (command "zoom" "w" (list (car pt1a) (+ (cadr pt1a) (abs threadlength)) (caddr pt1a)) pt3b)! ]/ p, H) c% L4 d
5 o6 M2 c8 o8 B1 J2 J- (princ "( r+ K1 E- R0 A$ u' ^
- 正在绘制三维螺纹，请等待")5 U) R4 }' J* ?6 G7 i' W) t
- (command "pline" pttmp1 pttmp5 pttmp6 "c")- Z; f( M! e/ b0 [; ~3 t, i/ W
- (command "revolve" "l" "" pttmp5 pttmp6 "")% ]1 [; H5 E! I2 Y( Y5 ^. `& @4 N
- (command "slice" "l" "" pttmp1 pttmp3 pt1z pttmp5)6 q2 G& k8 l; g
- (command "slice" "l" "" pt1a pt3a pt1az pttmp3)
$ X- t, ?8 c6 \ - (setq tstmp (ssadd (entlast)))
8 P; w U; \8 S: ?1 d5 b/ g- C ] - (command "pline" pttmp3 pttmp9 pttmp10 "c")
0 }# B1 _. l: l, P7 E: z. k - (command "revolve" "l" "" pttmp9 pttmp10 "")
$ J r# t0 j3 m1 S - (command "slice" "l" "" pttmp1 pttmp3 pt1z pttmp9)! b- u! T# D; x) o
- (command "slice" "l" "" pt1b pt3b pt1bz pttmp3)* S6 Y1 g o1 M+ @' g& B5 p: a2 y
- (setq tstmp (ssadd (entlast) tstmp))7 k- x& ]( X) X7 h& A/ i
- (command "union" tstmp "")& w7 |* D" k1 e
- 8 f8 P! z" o2 z" ]& |( s8 q7 q
- ;-------------------------------------------------------------------
1 ^7 P& L3 T% x! ]4 i - ; 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) v7 k% G" C1 f6 _+ ^
- ; 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
7 }& I e1 L/ {! ~6 y3 J. E - ; 在最后一步被切除% F; R6 ~, q3 t! A% i( c
- ;-------------------------------------------------------------------
- b" L; Y, E4 P3 R) }% _
! p1 f, C) [* \1 \; [- (command "slice" tstmp "" "xy" ptStart "b")8 ?4 \/ i* i1 p6 ^7 P8 u
- (setq tstmp (ssadd (entlast) tstmp))) A6 ]: V- B/ X4 I7 [
- (command "mirror" "l" "" pttmp1 "@10<0" "y")4 h' q2 k4 N# ~" G& O' D, t" t F
- (command "union" tstmp "")+ D8 u! v; l+ E( b& q. d/ M
" H1 k( u5 S3 |& N- ;-------------------------------------------------------------------0 w% U& P0 O+ _# g
- ; 螺旋进行阵列操作，然后再作并集（可能会耗费一定时间）
% i5 f, A9 F- e3 h( I3 |- l. i - ; 得到的实体再切除到指定的螺旋高度
, W: z2 }2 ]3 u6 \* g9 H4 @ - ;-------------------------------------------------------------------: ^, G$ Q$ b1 p, z
- ; Y( l5 n. \* p* i6 R
- (setq e (entlast))
8 I% @. C- {" Y! V1 f) C8 A - (command "array" tstmp "" "r" ttal 1 threadpitch)
0 s/ E' Q0 ~/ \) D" F - (repeat (1- ttal)
' ]; V' j' o% u. U8 O2 R- M& L- x - (setq e (entnext e)5 D9 V7 c c% d* ]# J5 ]5 q
- tstmp (ssadd e tstmp)
: n6 J0 Y) f0 l$ D0 ?. r - )# {+ i( l' U7 p
- )
( e; U6 F H9 |1 h& R - (command "union" tstmp "")
. _+ T0 y a r8 U9 d' H - / R9 |4 S, V5 l' q
- ; 若开始创建45度的圆锥& Q% ]$ ?# |$ Z% X9 T9 r% C* n
- (if (/= startcone "order"); a& j& Q# D: v; I2 v* z j
- (progn (setq e (entlast))1 f- G) {3 O2 d7 v1 F/ ^
- (command "cone" (list (car ptStart) (+ (cadr ptStart) threadpitch) (caddr ptStart)) "d" radmid "a" (list (car ptStart) (+ (+ (cadr ptStart) (/ radmid 2)) threadpitch) (caddr ptStart)))
- g- d0 u8 ?) e: \9 D - (command "union" "l" e "")" @% C9 Q) z0 c: ^: U% _. L- ?
- )
7 \- w3 D. E. D( P/ \3 O7 _ - )
$ T7 Y0 y( W. V- ]/ B% ~- r
) X/ @7 ~5 D% D3 z% K- E# I- (command "slice" "l" "" "zx" pttmp11 pttmp12)
7 `0 \6 p. w; N6 M - (command "slice" "l" "" "zx" pttmp12 pttmp11)
6 O9 E7 Q; C! H( ~( [ - (command "move" "l" "" ptStart (list (car ptStart) (- (cadr ptStart) threadpitch) (caddr ptStart))) 8 F: x$ o/ X9 s" P! y+ O! d; U: `3 U
- + U1 N$ A" t* D4 g' g* p
- ; 创建最小直径的圆柱体，然后与螺旋作交集$ i. ?' A* U: g9 r4 ^: i6 G4 X
- (setq e (entlast))
% U$ Z# \+ Y( L" A% P - (command "cylinder" ptStart "d" radinner "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart)))8 D. o. k( a8 Q' n8 |% W6 K# K
- (command "union" "l" e "")
) y8 e% z/ ?; r b - (setq tstmp (entlast))
' Y: I& M' N4 ]" Q, q0 A5 a D
* X9 x2 ]2 f$ g8 B- ; 创建中空的圆柱体
% G- O: r/ o9 z - (command "cylinder" ptStart "d" radmid "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart))) ; minor dia
4 O, Z2 X# P1 l1 }' B2 X$ Y# a - (setq e (entlast))
+ E. v9 w- g) q - 8 \4 @- F, [* @, g
- ; 若最后创建45度的圆锥& `: I1 L6 i( g0 x1 h
- (if (/= endcone "order")
6 ?7 Y8 @. D: l8 N - (progn (command "move" "l" "" ptStart (list (car ptStart) (- (cadr ptStart) (/ (- radmid radinner) 2)) (caddr ptStart)))
- E& d/ \+ D! j - (command "cone" ptStart "d" radmid "a" (list (car ptStart) (+ (cadr ptStart) (/ radmid 2)) (caddr ptStart))) ) L W0 u) q3 C5 }. P( m9 c
- (command "move" "l" "" ptStart (list (car ptStart) (- (+ (cadr ptStart) (abs threadlength)) (/ (- radmid radinner) 2)) (caddr ptStart)))
5 X T" ]5 F1 l, d' i8 ^( H - (command "union" "l" e "") : J. \7 D- k( d: d) P' ~ p' N
- (setq e (entlast))" ~2 B O' b2 e8 e
- )
* ^( R# h, k; f5 Q - )0 h+ I! d0 k4 n% M' h
- / c' W2 i1 k r
- ; 从大圆柱中减去小直径圆柱) n, h4 m( g9 s* D+ @
- (command "cylinder" ptStart "d" (* radmid 1.5) "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart)))
9 F/ \- [( m0 O, `# q - (command "subtract" "l" "" e "")7 v: H6 D$ g3 z6 e2 |8 b% P7 S+ x! M
- (setq e (entlast))
- g0 _9 Y! F* T1 b - 1 a8 l# I+ S( T
- ; 从螺旋中减去圆柱8 w9 h8 @: j& j
- (command "subtract" tstmp "" e "")
6 [/ I6 A( o2 o
0 q- n' i- i# V/ V ^" N6 {- R- ; 如果螺旋长度为负然后镜像
$ a+ s3 X) A5 `4 _+ } - (setq e (entlast)). |/ @2 h7 k+ b: |
- (if (< threadlength 0) (mirror3d e "zx" ptStart "y"))& i8 E& J0 u$ ] j) f
- - C3 F+ ?( x$ F5 _+ ]- \
- (command "zoom" "p")
R* f. ^4 B% U, m: |0 _9 A" y - ; (command "undo" "end") ; 结束undo步骤
1 A/ ?/ b0 G' k" |& Y - ): n( `. T" y( T$ Z1 l2 m p2 @: i
- 2 g/ u1 f6 ?% j
- ;;;---------------------------------------------------------------------------------------------------------------------;: H) ^0 g2 f- B! ?" h9 W
- (arxload "geom3d" nil) j; O( I! o, c t: B! \8 N; X
- (princ ". H: A J# u" ^8 ?4 z
- 3DThread 已加载。 ")
. D) M6 y3 |/ {4 i2 a+ _ - (princ)
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/ `0 M" I6 C1 `5 H# i! \% w4 p9 A三、弹簧源程序 l* n; i% ~" s* \9 v3 G% v
- (defun errMsg (s) ; 当命令执行时出现错误 ( p" c4 f3 W, E" @4 E c3 n
- ; 例如用户按下了CTRL + C% p" \2 W" N" ~& q1 u) e' ]# Z2 o8 O
- (if (/= s "Function cancelled"); b- ]$ T9 A$ K z8 b ~9 W5 K
- (princ (strcat "
4 |. U; y1 k+ t( F. h# C& T - Error: " s))* _% v. L% i* v: L
- ); J' u! ?, w) m0 g- j/ Y+ [7 W% m" z0 @
- (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值
, T' N( @% P+ ?( b+ g6 Z2 \ - (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值& Y1 C1 q# G1 j/ [& W2 s! m
- (setq *error* olderror) ; 恢复旧的错误处理1 o9 V: V& q) I0 z* x. g! ]+ l
- (princ)
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- (defun spring (nRepeat cntPoint bhfac lr strad bvfac- ~6 L, }- }- v- }
- / angle distnc tp aGrw dhGrw dvGrw Pi2 dv)0 \1 X; @, r( m G. K
: w3 C4 N3 u- q: r) p- (setvar "blipmode" 0) ; 关闭 blipmode * e- b" }- g; f) ?, o2 e5 o
- (setvar "cmdecho" 0) ; 关闭 cmdecho$ R( y( f' L! Z+ n9 N3 x" f
- (setq Pi2 (* 3.14159265 2))+ |' ~; f7 ~6 A3 C1 s3 `1 l0 K
- (setq aGrw (/ Pi2 lr))
8 X* o! i) T& N! o5 k - (setq dhGrw (/ bhfac lr))' V! X7 C j( l' C5 ]& N4 ~3 K
- (if bvfac (setq dvGrw (/ bvfac lr)))9 r2 l8 U. n+ |4 s0 s: \
- (setq angle 0.0)
4 h( N7 [# m$ G8 G% |+ t - (if bvfac
% g0 ~# c- H: W9 t3 }( c8 h - (setq distnc strad dv 0.0)' A+ n1 A/ M- r) {
- (setq distnc 0.0)
) @# r+ b. w, z- Z' d* a# ] - )
' W! k. x5 U# K" K9 k! R - (if bvfac
8 }; i2 w& T% l - (command "3dpoly") ; 开始绘制弹簧
" w. L3 V; X& h7 |) m - (command "pline" cntPoint) ; 从基点开始绘制弹簧; A; T! |4 T' x* A' `, S$ |' U* B
- )
/ @2 X* c9 o& C w( F; j - (repeat nRepeat
4 q" c; F& X6 R6 e7 ^' X# M% v - (repeat lr ( @0 V1 c9 s- o, V/ d( t
- (setq tp (polar cntPoint (setq angle (+ angle aGrw))4 h; e" Q& D* v6 b" T8 o/ |" q3 @
- (setq distnc (+ distnc dhGrw))4 Z9 Y# p8 u# g5 }- O1 ?8 t: E7 B
- )" x, l/ j, P, H& [# a4 O
- )4 P' P4 l* j! p; s5 x0 h5 O
- (if bvfac
! I- i/ O* X% ]5 R& X* v; P - (setq tp (list (car tp) (cadr tp) (+ dv (caddr tp)))9 U0 m7 E4 {9 H7 u
- dv (+ dv dvGrw)1 v: `, a% T8 U- H+ O# ]% k4 L
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- )
% S1 u$ O8 ?! [/ v - (command tp) ; 继续输入下一点! U6 M: Q5 r+ w2 L* p+ D/ V! x a% T# T
- )
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- (command "") ; 输入结束: ~1 l5 Y$ J: Z! f. f, ?7 P, b" t
- (princ)
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9 X' S s, g) G2 P0 w& D- ;;;
, j; t, M$ F- B; e - ;;; 生成三维弹簧函数调用接口
7 K3 T- W* u, ?& V" b o( x - ;;;
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! G7 e- q: T \; Y( v2 u* X- (defun C:3DSPRING (/ olderror cmdch blpmd cntPt RottCnt horiGrw vertGrw bgnRdtn ptCntPerCircle) 1 I. ^$ Z. e, N( R! x# z( t7 z
- (setq cmdch (getvar "cmdecho")) ; 获取cmdecho值，以便调用结束后恢复2 [3 `$ w7 r. q: T* C
- (setq blpmd (getvar "blipmode")) ; 获取blipmode值，以便调用结束后恢复
( ~, g+ Z9 w; z0 ?7 D - (setvar "cmdecho" 0) ; 关闭 cmdecho
+ N* e7 Q( G2 L6 ~/ U. x/ G" ^1 h - (initget 1) ; cntPt 必须非空# O1 O! r+ w ~3 B4 p2 ?' Y
- (setq cntPt (getpoint "
; V2 i* u9 H6 n$ e* O - 请输入底部中心点: "))
, u) q, A6 H3 c& L+ [2 x - (initget 7) ; RottCnt 必须非零、非空,不可忽略
2 H& I' s5 Y; J, y3 q( n' @ - (setq RottCnt (getint "
8 ?9 P0 d( T! H! { - 旋转的圈数: ")): b8 I* a4 a! ?% e2 Y
- (initget 7) ; bgnRdtn 必须非零、非空,不可忽略2 u7 F( p) `: @- d7 J! F
- (setq bgnRdtn (getdist cntPt "& i% W5 |- z- k! r
- 起始半径: "))
/ r5 {- w9 a9 a8 R0 ~, o - (initget 1) ; cf 必须非零、非空' u1 J3 c. F. e: q( u
- (setq horiGrw (getdist "' H' a$ X! F# x: u$ A1 g
- 每一圈的水平增长距离: "))
$ G2 V9 K8 ]) Z2 p - (initget 3) ; cf 必须非零、非空: S6 @( p0 B, k) @1 g, g2 N1 h( N# N
- (setq vertGrw (getdist "
. V, H; g2 g% w* ]8 u. F - 每一圈的垂直增长距离: "))- D7 q7 m, o: S, j6 a! {6 u
- (initget 6) ; ptCntPerCircle 必须非零、不可忽略1 G/ M4 O. D3 y" s9 q3 X
- (setq ptCntPerCircle (getint "
- M+ E# H. ^( r/ K" |( f; u1 t - 每一圈的插值点数<35>: "))! ^' R% e( O: u$ }/ l
- (cond ((null ptCntPerCircle) (setq ptCntPerCircle 35))) 7 G- h! `) z( R: Y6 x
- (spring RottCnt cntPt horiGrw ptCntPerCircle bgnRdtn vertGrw)' {( a& a- S" { ]) @
- (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值& Y8 B/ S, E9 N9 {6 O8 G2 N: M
- (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值
Q2 r! ~ X( Y/ e; J - (setq *error* olderror) ; Restore old *error* handler7 A4 X3 { V2 W) }( B2 |8 T' F% }6 o
- (princ)
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发表于 2006-4-14 13:10
发表于 2006-5-5 10:43
