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" q, u, l. N; V" B! n/ E9 [3 o b
) e/ q. z) F+ L3 W0 j- d _$ d- _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：
" x& w- n; o5 c$ l一、齿轮轮齿渐开渐开线
9 W% E2 H9 Z) L) S) R1 v0 C: _! F- G- ) j9 e! T; j/ }! C1 Z
- (defun c:gear(/)/ e) i, W+ j/ C
- (9 y5 I9 u+ B- }5 _( b1 p! U
- setq0 b% O: `/ r H I7 W1 J
- p0 (getpoint"输入齿轮中心p0: "); e/ Q* p2 L, ] O4 L
- m (getreal"输入齿轮模数M: ")1 ~/ h Z' ]7 r- J
- z (getint"输入齿轮齿数Z: ")% R, J/ B `* ]4 n' J. m1 Z
- ha 1
2 P5 z v5 Z& R& h3 d/ B. z! P - c 0.25
) g: l5 x: J$ U6 ^( |2 P7 S - a (/ pi 9)$ A* Y# U! j8 q. |- G
- ra(/ (* (+ z (+ ha ha)) m) 2)
0 C$ T( M7 I& \ - rf(/ (* (- z (+ (+ ha ha) c)) m) 2)
l g% C9 N; v d$ r& o - r(/ ( * m z) 2)8 J7 l N" ^, X" P& | i6 k8 U+ k
- rb ( * r (cos a))
' b& E0 G |7 X- N - ri rb. E; L6 B8 X8 Q& J- q3 G/ d
- ang 0
K O; j. f& w% Z9 n - g (polar p0 ang rb)4 L, {: j$ S. ]
- )
/ F5 e7 o! Z* {0 q$ s - (command "circle" p0 ra)
, t* V* `1 C( V8 g# A9 Q - (command "circle" p0 rf)" _1 R0 J5 v/ q4 n% z" ^2 y/ T' W, Y
- (command "circle" p0 r)4 H2 B1 Z5 m1 [- v
- (command "line" g)
/ u' |. q, G% b4 Q) C4 S* u9 N% O; H - W% \; h4 b: v5 ~7 R, |# g2 m" ?+ r3 H
- (while (< ri ra)8 A# [! I) Z$ M8 S) w( F
- (setq
7 `# |- K, T- J; T3 x) S: y2 L) G - ang ( + ang(/ pi 360))
$ R# U9 m: m: z$ N7 H+ b - ri ( / rb (cos ang)). i9 W4 M& b9 c
- cta ( - (/ (sin ang) (cos ang)) ang)
7 ^4 C. W. K3 f! |" A. u - g(polar p0 cta ri)
1 L% F& }$ v) t6 h - ), z; F* V e' l1 [/ k0 Q
" u7 J. i( ~) {# X9 m" e- (command g)
; C( t6 Y4 K6 K. L9 k. m4 N1 F9 I - )
. W& K- j8 A8 Q - (command ) 2 B$ E; |9 d7 v: @1 p
- )
8 {* S* P5 h- _* k) I" L( `: B
4 @" B9 f" u; T( Z4 x* \' _/ I) N, v1 P
二、螺旋源程序, X) G; s6 R% v# S+ ?! t
% f; M' y* l+ P9 D4 z- (defun errMsg (s)
6 B2 v4 j% v6 I, q# r+ w - (if (/= s "function cancelled") (princ (strcat ". }5 Z% @% q# X% j& G7 v! i9 [2 a
- Error: " s)))) T/ e3 e0 {' R; \1 k; Z2 V' n
- ; 当命令执行时出现错误9 \& ?/ M( M, H8 D, s
- (setvar "cmdecho" ocmdold) ; 例如用户按下了CTRL + C& J% ~2 j' a+ o- w/ u5 G
- (setvar "osmode" osmold)) h- K. I% o2 n4 Z
- (setq *error* olderr) ; 恢复旧的错误处理% h8 N* B! D9 r$ v# s$ b
- (princ)
( V- T- D* u, t8 S" M/ t$ m2 M - ): }6 U" o/ E" V& ^4 h
8 D/ Z' K* ^ [; m% Y/ j- (defun c:3Dthread (/ radouter threadpitch threadlength threadangle 8 S( l% b. `! x+ w. y. V
- ptStart innerdiafactor radmid radinner ocmdold osmold 4H 5H 6H h6 g6)9 O. V2 ~% V: |4 q. b7 E7 ?
- ;-------------------------------------------------------------------& W3 I$ O6 n& X4 W. B3 F
- ; 获取公制外径大小、螺距总长$ S2 v2 @ x. `% }
- ; 然后计算一系列几何点
7 @" ~5 u6 M) [# |6 t) \ - ; 并且关闭对象捕捉、命令回显5 u K% u: U$ L: w! |5 v1 _0 w8 x& s
- ;-------------------------------------------------------------------$ x( C( ^1 B; \8 @* R0 \+ m# Y
- (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)) 4 q+ e6 }8 S8 l" Z# ?0 c
- (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)) ' f5 \6 c6 z; d; l& c8 c( q' ^
- (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))
g7 S h( [* y k5 f' { - (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))
/ ]6 _4 Q3 @# ]) V. p; H - (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 z8 f" f. p, z9 @ W
0 a8 \ C" `+ Y1 H- (setq osmold (getvar "osmode")) ; 保存调用前的osmode系统变量值 t! V) }4 a' w& }3 p j, h
- (setq ocmdold (getvar "cmdecho")) ; 保存调用前的cmdecho系统变量值
* K, b j1 N/ k' q - (setvar "osmode" 0) ; 关闭对象捕捉 ; z6 x1 w) S# ?1 B
- (setvar "cmdecho" 0) ; 关闭命令的回显6 H0 x0 x& O* ]& c" R$ z- l
- : c! f( L; u* M. `! E
- (setq innerdiafactor 1.5) ; 设置内径系数6 C* c8 E* r6 W' G8 B& q
- (initget 7) ; radmid 必须非零、非空、非负1 `4 l" P" h5 K
- (setq radmid (getdist "
$ u/ o. ?2 e5 c1 p C/ E - 公制外径: "))$ c' y. [. F- Z, L& C" _% y3 _
- (initget 7) ; threadpitch 必须非零、非空、非负8 |3 z6 d; a" F+ S: b
- (setq threadpitch (getreal "
9 ]6 W M3 p. n: }4 e5 u6 H - 螺距: "))- f' H+ b; i/ c% z/ ~0 B
- (initget 1) ; ptStart 必须非空
9 D5 o* E/ l; d2 _/ g - (setq ptStart (getpoint "0 g, i! m2 \ m. i6 s
- 起始点: "))
! o$ z' ]( ?5 V; U4 `# M2 r0 z - (initget 3) ; threadlength 必须非零、非空、非负
" X V( o5 Z2 c- A, M% Q0 _3 z - (setq threadlength (getdist "6 g3 A% n7 x4 q8 r( e6 l3 v
- 螺纹总长(Y方向): "))
: d6 i: {5 z, B- z7 C
0 U/ u6 H6 w& C2 i% y1 C4 P- ; 对公制外径添加公差
* G7 A/ x0 j V4 m - (if (<= radmid 3) (setq order 0) ; 根据公制外径确定公差带中位置
& J- B: _8 [( u1 [" | - (if (<= radmid 6) (setq order 1)1 l1 G) y6 Q; D4 W I* ?& n
- (if (<= radmid 10) (setq order 2); d) x) s- t. N- y
- (if (<= radmid 18) (setq order 3)
" T* {* M2 P$ w - (if (<= radmid 30) (setq order 4)
0 v$ Q6 u0 b4 f - (if (<= radmid 50) (setq order 5)+ d4 V+ Q3 e6 U& }8 k" k
- (if (<= radmid 80) (setq order 6)
+ Z7 Q, W+ r( |* I# F- a( d - (if (<= radmid 120) (setq order 7)! a* a+ N% x( b4 l& Y
- (if (<= radmid 180) (setq order 8)5 k: p' r6 R3 t" {+ ^' \; d
- (if (<= radmid 250) (setq order 9)6 u8 ~( ?! B; t# l
- (if (<= radmid 315) (setq order 10)
. F( p6 @, v4 c8 M* ^ - (if (<= radmid 400) (setq order 11)8 H4 K8 [! [$ G; H
- (if (<= radmid 500) (setq order 12)
_$ |; j/ z8 y- Q, E; Q - )))))))))))))& I8 F. l9 I T" p" L4 t% ?, G4 j
- 7 o7 ~+ T$ V6 u' Z: x n
- (if (< threadpitch 0.25) (setq radmid (+ radmid (nth order 4H))) ; 根据螺距确定公差带1 U5 {9 ]. v, X) I/ w
- (if (< threadpitch 0.35) (setq radmid (+ radmid (nth order 5H)))) }) {1 a. r# u8 G$ R1 r
- (if (>= threadpitch 0.35) (setq radmid (+ radmid (nth order 6H)))
4 l& t j8 Y3 n) [4 d x T0 U0 m' c - )))
J: u5 ~; F6 p D6 Q# j% ? - + G q* i3 Q7 U3 ]# N' U4 u+ a
- (setq h (* 0.866025 threadpitch)) ; 计算齿高& \' P. j4 m5 t- G2 f
- (setq radouter (+ radmid (/ h 4))) ; 计算外径
% `/ N3 V0 @! n# |$ z - (setq radinner (- radouter (* h innerdiafactor))) ; 计算内径- r7 ^5 n( [0 Z' V; |) M4 v
- (setq threadangle (+ 30 0)) ; 计算齿顶角$ S% [# [1 k6 o3 Y" _( g
- 1 ?3 N$ o+ p x
- (auxithread radouter radmid radinner threadpitch threadlength threadangle ptStart) ; 调用绘制三维螺纹的子函数
! g5 \7 c! Q' U9 Y - 7 ]2 C" \, I+ ]# g: i9 B* X
- (princ ". h% i4 T3 T! w1 L$ b
- 三维螺纹创建完成")/ m+ G1 f' F: Z" M" v
- (setvar "osmode" osmold) ; 恢复调用前的osmode系统变量值7 D2 P8 q6 S; j& Z" |. q
- (setvar "cmdecho" ocmdold) ; 恢复调用前的cmdecho系统变量值- A) ]& n I4 {3 L8 u
- (princ)
- ~& y0 L, w# W( o$ @; |' ] - )" B/ q* {+ r9 h) @% r" |
- , o) C- p' k# x5 v3 W2 e" g* F3 z3 F
- (defun auxithread (radouter radmid radinner threadpitch threadlength threadangle ptStart / ttal pt1z ang pt1a
" {: y3 Y7 P. }! a) J$ G - pt1az pt3a pt1b pt1bz pt3b pttmp1 pttmp2 pttmp3 pttmp4 pttmp5 pttmp6 pttmp7 pttmp8 pttmp9 pttmp10 pttmp11 pttmp12 tstmp startcone endcone)
- `- _2 |# d% e$ q+ E3 k, H - ; D8 |# A/ D0 Z) c |# v* R
- ;(command "undo" "begin") ; 开始undo步骤
9 z. M) d; v* L" Z+ F, Q( _
{) b1 _" N K- (setq ttal (+ (fix (/ (abs threadlength) threadpitch)) 3)
$ | L$ [. {. l/ P - pttmp1 (list (- (car ptStart) (/ radouter 2.0)) (cadr ptStart) (caddr ptStart))
. B6 Z) o, I8 z0 ] - pt1z (list (- (car ptStart) (/ radouter 2.0)) (cadr ptStart) (+ (caddr pttmp1) 1.0))# V) D) e7 x6 L* r* [' r9 }
- pttmp2 (polar pttmp1 (/ (* threadangle pi) 180.0) 1)0 m4 G3 G- }. G3 E: @
- pttmp3 (list (+ (car pttmp1) radouter) (+ (cadr pttmp1) (/ threadpitch 2.0)) (caddr ptStart))
% e- e1 v+ o1 D4 @) {2 ]; \! L' A - ang (angle pttmp1 pttmp3)
; I0 Y% B5 b( m - pt1a (polar pttmp1 (+ ang (/ pi 2.0)) threadpitch)
. N" H! x$ T( ^+ y - pt1az (list (car pt1a) (cadr pt1a) (+ (caddr pt1a) 1.0))
3 G0 l+ w: t+ X+ o' G7 L - pt3a (polar pt1a ang radouter)
U" {4 @3 _6 J6 E. H - pt1b (polar pttmp1 (- ang (/ pi 2.0)) threadpitch); v3 V) d9 F! _4 ?: v/ ~; E2 W
- pt1bz (list (car pt1b) (cadr pt1b) (+ (caddr pt1b) 1.0))
# J6 n4 W# H! }% { - pt3b (polar pt1b ang radouter)2 p6 K2 @* ]" E# }* _/ g. g
- pttmp4 (polar pttmp3 (/ (* (- 180 threadangle) pi) 180.0) 1)2 R3 e( g8 {( o/ W! s0 S0 \
- pttmp5 (inters pttmp1 pttmp2 pttmp3 pttmp4 nil)
" S' k- G/ `0 k! ~4 h( {) C - pttmp6 (list (car pttmp5) (cadr ptStart) (caddr ptStart))
# Y! X* r. ?$ \! l, z8 F' q - pttmp7 (polar pttmp1 (/ (* (- 360 threadangle) pi) 180.0) 1)) T& n0 O# m+ [! [
- pttmp8 (polar pttmp3 (/ (* (+ 180 threadangle) pi) 180.0) 1)) q1 e' {' y( W* { E/ }% |' b
- pttmp9 (inters pttmp1 pttmp7 pttmp3 pttmp8 nil); K l5 d. |. b8 _
- pttmp10 (list (car pttmp9) (cadr pttmp3) (caddr pttmp3))
5 D8 y; Z/ E+ s) J& Z8 b - pttmp11 (polar ptStart (/ pi 2.0) threadpitch)& f, I& j R# B8 Y
- pttmp12 (polar pttmp11 (/ pi 2.0) (abs threadlength))* ]8 q% R& {* m2 K& R1 i
- )) r# Q- s$ ?4 t1 J. T+ q( o, U
5 t! A/ g0 r& x* V4 B& }6 i- ;-------------------------------------------------------------------. A3 ^8 S# D4 T: A$ m2 [
- ; 绘制两个倒置的并偏移1/2螺距的圆锥
0 i) ], O( O4 s - ; 这两个圆锥都以中剖面剖分
" K: [! v H) [9 S, g: K* t8 m - ; 进行并集运算
" j: a* I" B8 x! i2 O/ N! C - ;-------------------------------------------------------------------
7 h* Z5 z' C# W" K' c - ( w7 _1 \: u6 ?9 }8 M
- (SETQ startcone "order")4 V. v) i9 s) d% X% _5 \7 `( A5 ]
- (SETQ endcone "Y")# J$ Y; i7 A" F- y- b2 q3 B8 m
- (command "zoom" "w" (list (car pt1a) (+ (cadr pt1a) (abs threadlength)) (caddr pt1a)) pt3b)
" k: e9 N2 A; R - W) z7 L4 z1 E* R/ [% G+ c
- (princ "8 J, ]* @! a; A
- 正在绘制三维螺纹，请等待")
0 x' h: ~) H* V - (command "pline" pttmp1 pttmp5 pttmp6 "c")! u5 G$ c t1 x: N& T# @
- (command "revolve" "l" "" pttmp5 pttmp6 "")
( F% z+ a8 _& l3 |- m( U$ X! m" w - (command "slice" "l" "" pttmp1 pttmp3 pt1z pttmp5)
! d. I! E3 u6 b; F+ s1 h% W$ c - (command "slice" "l" "" pt1a pt3a pt1az pttmp3)* o6 C+ V% n3 j
- (setq tstmp (ssadd (entlast)))/ B. V) _$ ?7 h/ T: [. p3 E+ u
- (command "pline" pttmp3 pttmp9 pttmp10 "c")% ^$ X' c+ z0 A7 F" i% `; {, u
- (command "revolve" "l" "" pttmp9 pttmp10 "")! f6 ^8 x2 v6 P: V- _8 U8 I
- (command "slice" "l" "" pttmp1 pttmp3 pt1z pttmp9)! o4 v1 [7 I8 J$ g
- (command "slice" "l" "" pt1b pt3b pt1bz pttmp3)
! D) `1 M( O9 Y( u5 \* o" y - (setq tstmp (ssadd (entlast) tstmp))
1 d* k/ N$ j1 c6 |3 W - (command "union" tstmp "")2 ^& M/ d+ m M7 g/ T' Q* ^
- # p3 F( y$ q- b' E( p
- ;-------------------------------------------------------------------
/ v, h4 u( G9 @ - ; 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4 h; c$ P! [# S7 _
- ; 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3 N# W p- l( ?' I4 a3 _3 E% M
- ; 在最后一步被切除
& l$ h* d: e) h6 ]# t/ u0 U - ;-------------------------------------------------------------------
& a0 G+ w" y5 j& o - & `" e7 P. `) U# O4 v$ R6 g
- (command "slice" tstmp "" "xy" ptStart "b")2 a7 h, J2 o% C, r
- (setq tstmp (ssadd (entlast) tstmp))
0 `7 C u' l" w3 ~4 @0 H - (command "mirror" "l" "" pttmp1 "@10<0" "y")
\. T8 t- j0 J h9 F - (command "union" tstmp "")
5 i; x1 K1 Y/ g- Y; g2 t- H
) n6 f" P: m, Q- ;-------------------------------------------------------------------
& D5 K0 T' F% C' T& Y! s; c - ; 螺旋进行阵列操作，然后再作并集（可能会耗费一定时间）
+ i6 Q; [$ d# [' l! w' f - ; 得到的实体再切除到指定的螺旋高度/ I: j( M( A" S$ [* Z5 B0 v
- ;-------------------------------------------------------------------
" f3 V1 j/ ], Q* K- |
( T# j4 C: W$ ]# }- (setq e (entlast))
0 K$ b) n" v" x' g1 I( ~6 j& @$ K - (command "array" tstmp "" "r" ttal 1 threadpitch)
1 f8 l" A% A- v, i9 L' @ u - (repeat (1- ttal)& z" P0 y8 t: q: f! o" @
- (setq e (entnext e)/ k4 w* ~% h! o4 R, H
- tstmp (ssadd e tstmp)1 h3 |! _' T( u! H5 Z
- )$ F8 R2 x/ e. y, Y( C
- )
0 b5 D4 V% C6 {" h. A; M - (command "union" tstmp "")" K! O* b$ d( }! k! F. `* C5 [
% ?& K7 B$ A9 ~# x5 M3 j- ; 若开始创建45度的圆锥5 T" z: _/ ?9 f5 M6 y
- (if (/= startcone "order")
2 u: Q3 T# _5 `% X* n& g% H7 V# {: h - (progn (setq e (entlast))
& H; G5 E j. { U - (command "cone" (list (car ptStart) (+ (cadr ptStart) threadpitch) (caddr ptStart)) "d" radmid "a" (list (car ptStart) (+ (+ (cadr ptStart) (/ radmid 2)) threadpitch) (caddr ptStart)))
$ z5 h7 F$ h+ E' Z+ U [ - (command "union" "l" e "")
+ {+ I- S0 j- q6 N1 J" N% q! R7 m - )8 ] p8 G4 F6 j/ D- ~0 L2 K
- )5 N8 Y: B; I% i8 p. \6 ~
- ) e; [, C# B: Z9 D7 Q
- (command "slice" "l" "" "zx" pttmp11 pttmp12)
: ^4 h! J K0 _! [& U; _: n - (command "slice" "l" "" "zx" pttmp12 pttmp11)
5 D4 F5 r* `7 r: }0 ?2 s - (command "move" "l" "" ptStart (list (car ptStart) (- (cadr ptStart) threadpitch) (caddr ptStart))) ' M$ I6 U* U, D! P2 y) v" l
- ( N( w3 B: t4 F/ v2 W2 C
- ; 创建最小直径的圆柱体，然后与螺旋作交集
" _- G! P- k" O% B0 h0 G - (setq e (entlast))* W7 t; D5 a; U5 y- W
- (command "cylinder" ptStart "d" radinner "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart)))4 p2 J7 v% F0 i1 b4 I/ N
- (command "union" "l" e "")' \3 S3 b5 z4 Z+ _" W
- (setq tstmp (entlast))
: }8 r4 x& e6 p$ j
! d) p. o: S) `) }# L; M- ; 创建中空的圆柱体1 N6 B* u3 ^. g8 c+ B, ~; o
- (command "cylinder" ptStart "d" radmid "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart))) ; minor dia5 p) a/ T+ w8 }' G1 V) D$ W A2 ~' J
- (setq e (entlast))' I) `/ ^0 Y, ?( ]) y
- / j# X2 j7 z/ P" p/ j9 S* E
- ; 若最后创建45度的圆锥
7 R* E7 E/ l0 [( {9 y3 y! i3 f - (if (/= endcone "order")$ t& l2 @& u( n" z
- (progn (command "move" "l" "" ptStart (list (car ptStart) (- (cadr ptStart) (/ (- radmid radinner) 2)) (caddr ptStart))) 0 f/ Y% G" S% [6 [4 X) e" j# ?
- (command "cone" ptStart "d" radmid "a" (list (car ptStart) (+ (cadr ptStart) (/ radmid 2)) (caddr ptStart))) 1 w( J: J" ^ i! `
- (command "move" "l" "" ptStart (list (car ptStart) (- (+ (cadr ptStart) (abs threadlength)) (/ (- radmid radinner) 2)) (caddr ptStart)))
6 s5 Q% R; @; ~. H - (command "union" "l" e "") , z, {1 b# E$ t# P8 Q# s
- (setq e (entlast))/ r) Y8 a. C1 l0 w+ Q9 B- T; Z
- )! y8 B3 U5 T- t7 H$ O D
- )
7 X# s! p0 F( M
( N0 y1 [1 V0 Z6 |9 \# M- ; 从大圆柱中减去小直径圆柱% O+ V' L+ y$ H7 K3 M
- (command "cylinder" ptStart "d" (* radmid 1.5) "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart)))
* z. K n% |/ B s+ @$ K5 F - (command "subtract" "l" "" e "")
2 Y3 Q" O4 J7 @! Z! r. A - (setq e (entlast))$ }0 b% p& [4 Y% f! c7 ?! d
" u) B1 a E3 j) K: ~- ; 从螺旋中减去圆柱. \/ ^1 C9 I& \/ \' Z3 A/ w
- (command "subtract" tstmp "" e "")
1 j q" Z) |1 f9 F) d
1 b1 W$ `( A2 a |1 A5 I- ; 如果螺旋长度为负然后镜像
) ^3 _/ n ]4 n - (setq e (entlast))3 N" f. y5 B$ {4 u2 q
- (if (< threadlength 0) (mirror3d e "zx" ptStart "y"))
+ H. v1 M L9 g
% L$ z2 o# ]0 |) o6 A- (command "zoom" "p")
0 d! S+ H% s' b& ]% D7 g - ; (command "undo" "end") ; 结束undo步骤
b) ]$ u8 J% l5 h# T& ~- a - )
8 s N6 y4 t8 \1 r3 C
- C' T& R& {) B7 D9 W/ Y% ?+ T- ;;;---------------------------------------------------------------------------------------------------------------------;9 g& }! ]* x3 u8 Q- e, W
- (arxload "geom3d" nil)' r5 n( c- j! Q& f
- (princ ": C3 o/ X1 P ]: E3 I' g
- 3DThread 已加载。 ")& `( O: c' m7 U3 O; N
- (princ)3 [1 g5 ?2 [; d& w7 X
1 l: Y' q7 L5 m; j; L; h4 V" i, {& f
三、弹簧源程序
. _0 Q4 C8 A1 P5 d4 Y( q- (defun errMsg (s) ; 当命令执行时出现错误 6 T, D; j- b+ m/ K& N3 I$ z" q
- ; 例如用户按下了CTRL + C# H- x: b( z9 u k7 G/ c+ w, j
- (if (/= s "Function cancelled")
9 g% N5 L+ x5 m0 q8 O: k: j - (princ (strcat "
: O2 }+ k/ z1 b- o7 i' M& F - Error: " s))
2 s8 X0 Y6 A, F - )
7 O- y# j L B - (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值
R; ~7 i, q. a- [9 ?0 Q - (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值
5 N, x/ G& H% r) T - (setq *error* olderror) ; 恢复旧的错误处理
$ m |. K, S8 e; |* ^& C4 q - (princ)) [; U# B' G) I8 ?/ t
- )
+ ?* M0 }! ^+ R3 w: {5 J% L) E
1 H% I V% n5 X. F- (defun spring (nRepeat cntPoint bhfac lr strad bvfac1 l7 S% h7 d6 J- ]- @/ f
- / angle distnc tp aGrw dhGrw dvGrw Pi2 dv)
6 ?0 |) P$ W; l& F+ Y5 s, s - * f7 ^, s6 i5 y) \0 c% Q+ [7 H
- (setvar "blipmode" 0) ; 关闭 blipmode , G$ r& R0 l6 M0 @/ n! I
- (setvar "cmdecho" 0) ; 关闭 cmdecho/ }) c9 A: e+ T5 L6 O
- (setq Pi2 (* 3.14159265 2))5 j: Q: H9 ]1 [' p# u, u4 V7 `' u! G' m
- (setq aGrw (/ Pi2 lr))
7 V9 M) g6 p5 G; S - (setq dhGrw (/ bhfac lr))3 h( H4 Z* u" d
- (if bvfac (setq dvGrw (/ bvfac lr)))% z" U- R4 P; e7 \
- (setq angle 0.0)
" O5 L3 U9 V6 m( z. j - (if bvfac
' V* p% j8 |# D - (setq distnc strad dv 0.0)
$ g. P" M9 E4 W9 a& K - (setq distnc 0.0)8 ?2 V. L: V- }8 [3 E
- )
( l0 K1 n/ J3 U, c3 }* y - (if bvfac l( L- s, y' j' t! C# f$ d
- (command "3dpoly") ; 开始绘制弹簧
7 G9 t8 K7 J$ Z. Y3 k - (command "pline" cntPoint) ; 从基点开始绘制弹簧: _& `8 q. \9 @" w4 Y
- )+ Z2 F2 d9 ]4 F( ~7 {
- (repeat nRepeat 9 K: ]2 k& o) x" J1 F: v/ O
- (repeat lr 9 Z- m9 \+ N. B' ~6 a! C) j) ^8 L
- (setq tp (polar cntPoint (setq angle (+ angle aGrw))
7 C) S. V- U8 L$ @, I- h8 f4 h - (setq distnc (+ distnc dhGrw))' X2 F( Q% |) T+ F( W# T' V* h
- )
1 I3 o! r( i# z$ l* K - )
7 i! j1 I; Y5 n" a2 y5 e J; H - (if bvfac
8 V" t8 M3 u0 F: Q; ]1 } - (setq tp (list (car tp) (cadr tp) (+ dv (caddr tp)))
: D! G* V- t' S- c- L& ` - dv (+ dv dvGrw)) o, y2 f) g2 p' P* }. R
- ) f9 \; i* L9 e) L- d
- )0 u/ n# V3 b, H, N- M
- (command tp) ; 继续输入下一点4 I5 |7 V: l' @( B# r
- )6 n$ ~" N- V" J* D
- )
3 L, V% x6 U, E. C0 p - (command "") ; 输入结束 D: ^4 Y( k) {5 l4 u
- (princ)
# R" i5 a4 B% S: O( a2 m - )
' o! `9 K- ^: @
, C$ A% R6 j5 n4 E/ I6 ~4 n- ;;;
W4 E$ _! R9 q2 n - ;;; 生成三维弹簧函数调用接口
1 g5 K3 l9 k; ?6 x' c4 T - ;;;, b; K$ A: T \9 Z# f# ]
7 n# }/ R. ]& m+ ]9 B* ^, \- (defun C:3DSPRING (/ olderror cmdch blpmd cntPt RottCnt horiGrw vertGrw bgnRdtn ptCntPerCircle)
1 C, }; q' Z+ I: v; ` - (setq cmdch (getvar "cmdecho")) ; 获取cmdecho值，以便调用结束后恢复8 W% H5 L) M, O3 @& N1 m
- (setq blpmd (getvar "blipmode")) ; 获取blipmode值，以便调用结束后恢复/ m" J2 t- s. x; P. I5 d: v6 y
- (setvar "cmdecho" 0) ; 关闭 cmdecho
8 N! _0 J6 ` N- @" ]! _ - (initget 1) ; cntPt 必须非空
r4 E7 y& C" U# a5 D5 T - (setq cntPt (getpoint "
0 n* n1 m9 m. d3 m- h+ `0 i - 请输入底部中心点: "))$ \5 \/ N! I+ W3 C: A
- (initget 7) ; RottCnt 必须非零、非空,不可忽略
' R; G" J9 r" K9 H) d- f5 L - (setq RottCnt (getint "
7 U6 W, Z; X4 d - 旋转的圈数: "))
5 K* ~! }- k/ s5 i - (initget 7) ; bgnRdtn 必须非零、非空,不可忽略6 H$ B s, U) [0 P/ Z
- (setq bgnRdtn (getdist cntPt "
4 V5 {$ h5 c9 u' r - 起始半径: "))( ~: C" N" ~+ f' v4 j h7 T
- (initget 1) ; cf 必须非零、非空
0 N' n) d) k6 ?! [" G3 x) n$ ]- H/ @9 s - (setq horiGrw (getdist "
1 f: v- D8 N8 C - 每一圈的水平增长距离: "))
. q. _/ j d- ]0 }2 @ - (initget 3) ; cf 必须非零、非空
9 V" h4 j$ M, m; _, z' C5 J - (setq vertGrw (getdist "" H! u8 S9 s1 e( I* z
- 每一圈的垂直增长距离: "))
+ R; G3 G5 R. D6 L% |4 y - (initget 6) ; ptCntPerCircle 必须非零、不可忽略, l& a& M; W% N
- (setq ptCntPerCircle (getint "# i: e5 \2 V2 l9 z6 i
- 每一圈的插值点数<35>: "))
* {$ n5 A- k2 J) J+ X5 Y - (cond ((null ptCntPerCircle) (setq ptCntPerCircle 35)))
9 _& p& U2 R# e9 j- D - (spring RottCnt cntPt horiGrw ptCntPerCircle bgnRdtn vertGrw)
0 s9 t6 E, Z* l+ ^' s/ |9 q - (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值8 F" \; q7 x/ H
- (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值
# ~1 F7 e, X- ~' V4 W - (setq *error* olderror) ; Restore old *error* handler
/ v0 v5 X$ A9 W4 \2 ?. _ - (princ)
$ o2 s$ N! B$ n' B - o" ^' o" |- C
- )
. G6 n/ H$ A9 g$ i
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发表于 2006-4-14 13:10
发表于 2006-5-5 10:43
