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1 Q' i+ H A& {+ M; j
; @$ n0 H- \8 B; w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：
* s* Q z# H& T6 B5 [一、齿轮轮齿渐开渐开线0 w) ?& t' i) t4 D, d
+ A# L# [. W* h" g% z- (defun c:gear(/)4 Q5 Y; |6 Q# J1 t! z
- (3 w2 e0 l3 E2 y7 W7 j, z
- setq' U7 }) S M8 E1 `- H
- p0 (getpoint"输入齿轮中心p0: ")
$ K; M# L; S! B+ S. y* E - m (getreal"输入齿轮模数M: ")$ T& i' j9 ~% x, A& F) @
- z (getint"输入齿轮齿数Z: ")
) M) y2 ?+ i8 E9 L' }) S& c - ha 14 ^' W) E+ w7 h+ C
- c 0.25
' w& v: Y6 w, O2 s7 f; D5 G - a (/ pi 9)1 `1 y) b/ ?5 ^: a( ^0 ?( y
- ra(/ (* (+ z (+ ha ha)) m) 2)
/ }0 ]# W0 i# a - rf(/ (* (- z (+ (+ ha ha) c)) m) 2)
) S( Y5 p# S8 Y. ?0 I0 M2 t: u - r(/ ( * m z) 2)/ y0 N o) P/ N4 m- b7 ]% X3 ?* k
- rb ( * r (cos a))
: x- P4 L5 q5 C2 k( G3 W - ri rb5 I& X! R& }; c) K
- ang 0
! t7 \) c; V, F! m, W8 W$ y) _! D - g (polar p0 ang rb)
& u; M9 u' J& d9 H; c( R! F8 z' h2 d - )
g7 X2 `8 L' w) q - (command "circle" p0 ra)
6 B# e+ f7 O) z" L - (command "circle" p0 rf)
2 a* j2 j. Y" S8 F+ T8 J0 M - (command "circle" p0 r)1 o/ \# ^0 D8 z% U9 o- f4 X7 A% N. t
- (command "line" g)
* {5 @/ {) t) m9 `; F6 L& N0 [ -
9 c! D- a8 f8 V) y% f2 o k& V - (while (< ri ra)0 p7 d- @% ^3 y z y: X; D% a" O
- (setq
$ G) j) Y( K( a/ F - ang ( + ang(/ pi 360)), E- b8 A+ i! W5 b
- ri ( / rb (cos ang))0 x6 |0 P8 `* d! G
- cta ( - (/ (sin ang) (cos ang)) ang)
' V+ |; C, d* Q# H; i/ W# x ] - g(polar p0 cta ri)# M7 n1 \: U ?" ^3 K w
- )
, g9 N$ [; _; q% T: e
5 ^8 j' e. C' t+ R% J8 W- (command g)
7 [6 ~8 G' p2 r" I - )- V0 d; L8 E( u$ N0 |7 R
- (command ) 8 n8 I; D2 K) @5 G
- )% Y. u8 w0 S6 D5 @+ X. O
& v8 ~, v0 f5 Z4 Y. G
# T) t4 f' n3 ^( \! D: Q8 N
二、螺旋源程序5 Z, F# x, m7 }$ H( r8 D: K
$ f) D4 c. d5 ^7 h, p8 \1 K
- (defun errMsg (s)3 U0 u8 `/ N: @6 {& O4 p3 o$ i
- (if (/= s "function cancelled") (princ (strcat "7 r+ L8 V: C3 i
- Error: " s)))
; }( e* M' U7 ]% N& Q: W( q" S - ; 当命令执行时出现错误
! _; x% n% W, Y- K. { - (setvar "cmdecho" ocmdold) ; 例如用户按下了CTRL + C9 f) o+ N7 A# S" l4 e6 _9 C
- (setvar "osmode" osmold)
) w% K% s( t* B# o2 O( ]7 l8 u8 j- | - (setq *error* olderr) ; 恢复旧的错误处理
6 n( a ~8 A; D* s O0 W. [ - (princ)
. E( P, Y" l3 O! V - )
, l! V) }* K! |, e
- z% c" p, W& b# k, y- (defun c:3Dthread (/ radouter threadpitch threadlength threadangle
" a- f% o( Y- [5 @ h/ G6 j }# v - ptStart innerdiafactor radmid radinner ocmdold osmold 4H 5H 6H h6 g6)
2 h; b2 f- h$ B/ F - ;-------------------------------------------------------------------
, I: K Q5 J% g& | - ; 获取公制外径大小、螺距总长
6 a9 u, P2 h# V7 T - ; 然后计算一系列几何点
; x1 |$ N8 w& p - ; 并且关闭对象捕捉、命令回显* W( [7 o. W5 \0 m* R7 [& L2 r+ _
- ;-------------------------------------------------------------------: {: S5 w- @' A1 [9 i
- (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))
/ n$ l3 x1 ?! {7 ^7 \! F% l- | - (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))
! W1 K$ Y: d9 l4 B! k" @1 w - (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)) " W1 v% h) c3 H2 c, c& W! 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)) % R& H; P7 U7 K5 {* m, B: L
- (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)) F9 P m' B0 b" i8 w8 r
- 4 ?7 N' y/ |* R, Y* f+ X! e$ }3 {9 h
- (setq osmold (getvar "osmode")) ; 保存调用前的osmode系统变量值
2 I, U7 P5 z5 Y) }1 `% C - (setq ocmdold (getvar "cmdecho")) ; 保存调用前的cmdecho系统变量值
& T% b3 j/ f8 i0 v - (setvar "osmode" 0) ; 关闭对象捕捉 $ {0 U' U, J" e" t
- (setvar "cmdecho" 0) ; 关闭命令的回显
8 e: _1 M- E4 S' f
5 T4 e' o6 d7 d" P9 m2 O6 J ?- (setq innerdiafactor 1.5) ; 设置内径系数. _( p! ~8 v- a8 r
- (initget 7) ; radmid 必须非零、非空、非负' E4 G% T( Z. u3 [. s+ ~
- (setq radmid (getdist "6 A, N; w: q D [* O( i+ R6 l2 q) e
- 公制外径: "))
1 ^) K" K! Q9 l8 D - (initget 7) ; threadpitch 必须非零、非空、非负
$ r. g! `- V. Z: t - (setq threadpitch (getreal "
3 q9 j( ?! W7 v7 Q7 y2 |9 @0 @ - 螺距: "))
2 S/ a: K0 i/ C% d' P - (initget 1) ; ptStart 必须非空 M* z( j9 H& o5 F
- (setq ptStart (getpoint ": i6 u* m" N# c9 c3 I7 _4 A
- 起始点: "))' n8 f: k# ]6 ~2 i4 y( G+ S
- (initget 3) ; threadlength 必须非零、非空、非负
! |' n: @& @1 C' \! y( |% _9 ] - (setq threadlength (getdist " N" g! l1 y7 G
- 螺纹总长(Y方向): "))
* S$ {0 b6 k; c& ^ - 8 x5 f& ]) V9 A5 D; Y% p
- ; 对公制外径添加公差6 R+ {) F# b. |1 @8 B% y4 ^
- (if (<= radmid 3) (setq order 0) ; 根据公制外径确定公差带中位置
+ B z, Z3 s+ R. R! u- u# z4 Q5 k - (if (<= radmid 6) (setq order 1)
4 S2 f' ^# h4 z# V; S0 r - (if (<= radmid 10) (setq order 2)! h6 G$ O3 U, o/ g ?9 N
- (if (<= radmid 18) (setq order 3)
# ?8 ~- X! D4 O! i8 U - (if (<= radmid 30) (setq order 4)
, E7 e* N, ~% q2 X& i9 } - (if (<= radmid 50) (setq order 5)
4 [$ ?+ ^' G3 D# K& s - (if (<= radmid 80) (setq order 6). n- S1 L0 S+ t$ @
- (if (<= radmid 120) (setq order 7)* N2 Q+ P' \- |: Y
- (if (<= radmid 180) (setq order 8)9 M$ R: g X4 { n4 p4 O& S
- (if (<= radmid 250) (setq order 9)- a; C( Z" u8 q7 }
- (if (<= radmid 315) (setq order 10)
5 {% j& j: T, _- G4 G - (if (<= radmid 400) (setq order 11)$ r0 h/ N2 }1 ] g2 V
- (if (<= radmid 500) (setq order 12)2 j8 U! z# p* Q# i: u6 C
- )))))))))))))
; s5 o& V; h. L5 |. ?
6 M! n+ T! `2 I! u- (if (< threadpitch 0.25) (setq radmid (+ radmid (nth order 4H))) ; 根据螺距确定公差带
9 h1 X( [, b$ h- y$ r7 n2 D - (if (< threadpitch 0.35) (setq radmid (+ radmid (nth order 5H)))& |* l Y2 c) k+ x
- (if (>= threadpitch 0.35) (setq radmid (+ radmid (nth order 6H)))
/ v+ |& V; M4 g. k: X - )))
+ O* _5 E0 @. q -
* |2 t7 A; L3 e. ` - (setq h (* 0.866025 threadpitch)) ; 计算齿高
3 ]1 l& l8 ]5 z& [2 m; E - (setq radouter (+ radmid (/ h 4))) ; 计算外径
" W: f; s% X X2 P# k( m - (setq radinner (- radouter (* h innerdiafactor))) ; 计算内径
6 I s! ?- t) I0 D, d - (setq threadangle (+ 30 0)) ; 计算齿顶角
3 E1 @" @7 [9 L
5 V6 O: |8 H/ j$ e9 q- (auxithread radouter radmid radinner threadpitch threadlength threadangle ptStart) ; 调用绘制三维螺纹的子函数
; O, B' v, w' o* Y x$ T - $ a$ B. Y `. M
- (princ "2 K, f" O9 H3 { [9 S- _' [
- 三维螺纹创建完成")
+ c, b0 a6 W. W1 }. U' ^+ c* o - (setvar "osmode" osmold) ; 恢复调用前的osmode系统变量值8 G. W; \# f; h z
- (setvar "cmdecho" ocmdold) ; 恢复调用前的cmdecho系统变量值# G% _/ d3 q2 h% M h
- (princ)5 z6 A( E3 y! y
- )( C' [" ^" S0 }; Q& @* d$ i4 Z: V
- + S8 c) _6 g6 t. r: w
- (defun auxithread (radouter radmid radinner threadpitch threadlength threadangle ptStart / ttal pt1z ang pt1a
2 E x1 j/ I4 H1 W* v! i - pt1az pt3a pt1b pt1bz pt3b pttmp1 pttmp2 pttmp3 pttmp4 pttmp5 pttmp6 pttmp7 pttmp8 pttmp9 pttmp10 pttmp11 pttmp12 tstmp startcone endcone)
* t3 @4 Q7 y) [ - ; p4 Z0 t% v) r
- ;(command "undo" "begin") ; 开始undo步骤
" b e H1 T/ a( X1 D) A3 @2 b - 1 @+ N c V0 Z% \3 ^* O
- (setq ttal (+ (fix (/ (abs threadlength) threadpitch)) 3)
" |$ p" v2 T5 A+ V - pttmp1 (list (- (car ptStart) (/ radouter 2.0)) (cadr ptStart) (caddr ptStart))
, \6 V, P2 f: a: Z7 J - pt1z (list (- (car ptStart) (/ radouter 2.0)) (cadr ptStart) (+ (caddr pttmp1) 1.0))4 V0 p; ]( k1 t2 V! }; ^
- pttmp2 (polar pttmp1 (/ (* threadangle pi) 180.0) 1)
! G1 v/ N) z. [. X/ P0 K - pttmp3 (list (+ (car pttmp1) radouter) (+ (cadr pttmp1) (/ threadpitch 2.0)) (caddr ptStart))
' L% Q6 q8 [ Y# z- [ @/ K0 p6 d - ang (angle pttmp1 pttmp3)
+ ~2 w) M1 b5 P) F" H6 l* _/ i1 | - pt1a (polar pttmp1 (+ ang (/ pi 2.0)) threadpitch) {5 K/ B! [% M& c( ?
- pt1az (list (car pt1a) (cadr pt1a) (+ (caddr pt1a) 1.0))% I# V2 i) Y9 ~2 |2 K( e( R4 d) n6 {
- pt3a (polar pt1a ang radouter)
1 z3 x) E+ g# C9 P - pt1b (polar pttmp1 (- ang (/ pi 2.0)) threadpitch)1 D! ^0 O; |5 A5 s* U. R
- pt1bz (list (car pt1b) (cadr pt1b) (+ (caddr pt1b) 1.0))' _0 a6 [& i, Q( V6 R. S4 Q9 O% b
- pt3b (polar pt1b ang radouter)
; X, a/ C6 p0 ^+ d - pttmp4 (polar pttmp3 (/ (* (- 180 threadangle) pi) 180.0) 1)
3 `$ Y. E; z, a/ G* s - pttmp5 (inters pttmp1 pttmp2 pttmp3 pttmp4 nil)
/ U" w( x( a. w! ]5 s3 m1 p - pttmp6 (list (car pttmp5) (cadr ptStart) (caddr ptStart))) g8 i6 n0 k% s$ K: G
- pttmp7 (polar pttmp1 (/ (* (- 360 threadangle) pi) 180.0) 1)
7 Q/ R6 `1 c& b, H; V; M( y0 C3 b" f - pttmp8 (polar pttmp3 (/ (* (+ 180 threadangle) pi) 180.0) 1)
8 c* \: x: q1 }( y+ T - pttmp9 (inters pttmp1 pttmp7 pttmp3 pttmp8 nil)( K2 ?# \) M/ @" J
- pttmp10 (list (car pttmp9) (cadr pttmp3) (caddr pttmp3)): d# M, D; e h) c; B
- pttmp11 (polar ptStart (/ pi 2.0) threadpitch) ]! c x {7 ]9 C
- pttmp12 (polar pttmp11 (/ pi 2.0) (abs threadlength))! Y. }) u7 r3 t' e! J& C
- )4 R d( s5 B& q8 v6 L
k' v/ n; I: P6 E- ^( L" D- ;------------------------------------------------------------------- o6 ? |# v1 d5 `- A
- ; 绘制两个倒置的并偏移1/2螺距的圆锥5 O8 ]$ F( o9 b1 ?$ d
- ; 这两个圆锥都以中剖面剖分
- Z" b: A' A! x j9 r: r3 Z - ; 进行并集运算# J# s U1 X$ k- s4 _ y4 J$ n3 m, ?
- ;-------------------------------------------------------------------+ D7 Y9 H7 I2 J+ u" R
- + i9 ?) x8 k& u- _ \4 {5 e( i
- (SETQ startcone "order")7 C. a. H+ B6 m T& T0 P. f5 T
- (SETQ endcone "Y")8 H$ ~* b3 A- P" R3 A3 y
- (command "zoom" "w" (list (car pt1a) (+ (cadr pt1a) (abs threadlength)) (caddr pt1a)) pt3b)& I/ ^7 [: @3 l# j8 M
" h: D7 a6 d+ x8 x3 d% }- (princ "6 \ e) ]( X0 M3 [
- 正在绘制三维螺纹，请等待")
( { V2 n: Y" e6 K3 O - (command "pline" pttmp1 pttmp5 pttmp6 "c")
" U) O- c( @! F w3 [, H8 F% V* s - (command "revolve" "l" "" pttmp5 pttmp6 "")4 |# y( K4 Q4 B1 S* ?/ ^
- (command "slice" "l" "" pttmp1 pttmp3 pt1z pttmp5). I. u3 J( Z6 }) y0 d8 O
- (command "slice" "l" "" pt1a pt3a pt1az pttmp3) I! T2 k9 e! b+ ~- A
- (setq tstmp (ssadd (entlast)))
* A" e8 c$ Y% { - (command "pline" pttmp3 pttmp9 pttmp10 "c")/ X t% P% U a
- (command "revolve" "l" "" pttmp9 pttmp10 "")9 i& R F0 v: A& P" V6 V
- (command "slice" "l" "" pttmp1 pttmp3 pt1z pttmp9)! }5 x* J3 l* Y! e$ U
- (command "slice" "l" "" pt1b pt3b pt1bz pttmp3)
; q4 Q3 y. W t - (setq tstmp (ssadd (entlast) tstmp))% N6 L8 U. z- t4 w1 E8 d. Z2 c9 n
- (command "union" tstmp "")
, o% {1 q+ y7 h6 }3 v/ F+ C - / Y2 {3 P8 i) N! ?( M g* C# C
- ;-------------------------------------------------------------------
+ V0 t5 F: Y4 N# \' ~ - ; 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
) v& C9 k( a$ m$ d# P - ; 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# |1 g+ U2 @3 T+ B* P, Z
- ; 在最后一步被切除9 I' R! u% V! J* O) o4 J" m
- ;-------------------------------------------------------------------
- w: j7 w$ o4 U* ~9 o% Y2 }* y - & Z! e/ B0 g u* M9 k, u
- (command "slice" tstmp "" "xy" ptStart "b")* F5 ^: E: j% h7 R& \2 m+ a
- (setq tstmp (ssadd (entlast) tstmp))2 L$ O8 p8 F e/ j8 }
- (command "mirror" "l" "" pttmp1 "@10<0" "y")
* G% c) r0 ?3 Y* |# O: S9 d - (command "union" tstmp "")* Z9 e! M6 C0 u- t0 P6 @ _; p
- 7 E& q2 |2 z) B+ K/ a c; n8 @
- ;-------------------------------------------------------------------0 _2 }( F/ H) D& B% L0 L1 X# a( I
- ; 螺旋进行阵列操作，然后再作并集（可能会耗费一定时间）; P! D! t' [$ D0 s o2 ~- ?% I
- ; 得到的实体再切除到指定的螺旋高度
" [1 E: t4 `5 _; r - ;-------------------------------------------------------------------! q) U1 s: A( B3 ^7 I2 z* _
- 3 F7 |9 v, l9 ?7 q: i3 R) D
- (setq e (entlast))! W' ~4 c1 V8 L
- (command "array" tstmp "" "r" ttal 1 threadpitch)6 o* }0 `$ S0 n$ R" ]; }
- (repeat (1- ttal)
. I1 y6 x/ O: ~; h, R, a y. F; P - (setq e (entnext e)
7 Q1 Z8 y" R9 L% T4 C - tstmp (ssadd e tstmp)
7 q& s+ e7 u8 V7 I% n6 k. `! G - )
6 G& p2 ~. F4 ?) M9 M, p T5 s6 x - )& ~# F/ R$ Q1 d5 a; ?
- (command "union" tstmp "")
9 ~: G/ A3 Y! J% ~
1 L# P7 m7 m6 f' r: ^- l5 ^( J! b- ; 若开始创建45度的圆锥. y; A) a; U% j, P
- (if (/= startcone "order")/ t9 |$ p: @* W. W6 x% m
- (progn (setq e (entlast))
/ p' a7 |! C6 A9 T - (command "cone" (list (car ptStart) (+ (cadr ptStart) threadpitch) (caddr ptStart)) "d" radmid "a" (list (car ptStart) (+ (+ (cadr ptStart) (/ radmid 2)) threadpitch) (caddr ptStart)))5 U' k" n7 Z) y0 r/ r2 [9 N# a q
- (command "union" "l" e "")
6 s! R) I' ?6 z' c - )
3 d5 N% o, |1 {' I - )
2 b, {% W& l: E3 W1 w
& L% y- u) q* n9 o$ I( x) T% {- (command "slice" "l" "" "zx" pttmp11 pttmp12)
5 d0 }: n9 j2 C9 l2 D8 G1 Z7 h - (command "slice" "l" "" "zx" pttmp12 pttmp11)( k& S" b: s1 k$ i6 o( a. b& k
- (command "move" "l" "" ptStart (list (car ptStart) (- (cadr ptStart) threadpitch) (caddr ptStart))) 8 H, H; P9 R5 e. P
- ' D8 `! E+ f2 F7 k4 G) @
- ; 创建最小直径的圆柱体，然后与螺旋作交集% T: Q1 J6 [- S5 W f. s
- (setq e (entlast))
& p( _. I. a: ~4 G! j0 _ - (command "cylinder" ptStart "d" radinner "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart)))
; g8 a. z" m6 ^ y5 w# t3 F" i - (command "union" "l" e "")
4 \' q% j- Q! l - (setq tstmp (entlast))9 Y9 o V$ R7 h! z5 m) S
- 6 }( T* D( b% c5 _1 v
- ; 创建中空的圆柱体
2 o0 O3 \9 T7 M& w) ~5 f5 N - (command "cylinder" ptStart "d" radmid "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart))) ; minor dia' Y2 o1 G- C, r0 d0 y
- (setq e (entlast))& P1 s) G7 t6 E: X
- / A( k C6 i5 }2 {: Q2 O
- ; 若最后创建45度的圆锥6 n, q- G0 H8 q( W, k0 ]+ S# Q4 Q
- (if (/= endcone "order")$ o: N; p$ r( U3 p
- (progn (command "move" "l" "" ptStart (list (car ptStart) (- (cadr ptStart) (/ (- radmid radinner) 2)) (caddr ptStart)))
, I2 o2 ?, u2 m+ l9 A - (command "cone" ptStart "d" radmid "a" (list (car ptStart) (+ (cadr ptStart) (/ radmid 2)) (caddr ptStart)))
9 c9 D- f* y4 t% [ t( X! i; H - (command "move" "l" "" ptStart (list (car ptStart) (- (+ (cadr ptStart) (abs threadlength)) (/ (- radmid radinner) 2)) (caddr ptStart)))
2 x2 T6 g# r% ^3 J - (command "union" "l" e "") 0 G) m: p! y2 R( ^; |
- (setq e (entlast))0 ^ I. g& p, e5 Z, O/ \9 V5 s% @
- )
/ }' c; n9 S! n1 S9 b - )
9 |3 [& _, j9 n
0 P8 R; y5 U8 k6 ]& \- ; 从大圆柱中减去小直径圆柱$ e7 J% O* h! a( l3 [
- (command "cylinder" ptStart "d" (* radmid 1.5) "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart)))) D4 V; x+ R( J" l9 n
- (command "subtract" "l" "" e "")4 \- T+ v, D0 n
- (setq e (entlast))
- C4 l$ i ]' }! g5 i) k2 |- K
. k9 o: ^& C4 L) a& U- a# S- ; 从螺旋中减去圆柱
8 F6 a9 h; T( Y; Q" B' P/ N - (command "subtract" tstmp "" e "")- _: [9 F6 N4 J9 q$ L
- " v* }: E. p( v0 I( v& a
- ; 如果螺旋长度为负然后镜像
% g# i5 M; Q* {, K4 H - (setq e (entlast))
. ^1 O+ D0 Z: m/ Q+ J' `4 b+ D - (if (< threadlength 0) (mirror3d e "zx" ptStart "y"))" ]2 v6 ^3 t9 G2 D6 _: S1 n s" Z& C3 s
N) h) P4 E/ _% _. M2 w( ]* {- (command "zoom" "p")
: B' V" E4 w6 t9 p9 a& I4 E$ \ - ; (command "undo" "end") ; 结束undo步骤
# `1 @8 u0 G- l& L; w - ), _2 b- K, }' S- e
- 6 z& a/ R# A1 z' Z: e5 ^
- ;;;---------------------------------------------------------------------------------------------------------------------;6 j9 h6 ^8 s7 Q; p0 U+ O2 J) M
- (arxload "geom3d" nil)$ j) a" U; g7 N+ {' N
- (princ "( h( ]( N4 G( T8 x
- 3DThread 已加载。 ")4 X7 p8 E- e# ~# i W ^
- (princ)
; ^# E. N" U1 l
2 P+ L4 T. g9 I/ r* p |' }
3 R# N1 V) \; v/ y: J' @* Y' ?* c8 x1 @+ o+ x. ?# B3 O. u
三、弹簧源程序7 U8 I4 ^( p0 k, M# i' s9 y, Y
- (defun errMsg (s) ; 当命令执行时出现错误 + r( i4 J7 V, G, a3 a5 D
- ; 例如用户按下了CTRL + C
E9 Z/ M) K$ F" ] - (if (/= s "Function cancelled")% o, a8 A) K, }
- (princ (strcat "4 w( Z2 j* s, r+ ~2 a
- Error: " s))
" H' y# u! ^( }" ~$ A q! S' V - )
" q" w9 i0 o4 `6 M2 \4 b$ x6 ] - (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值) c. i4 [7 s* K9 @; h3 x' l; ]
- (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值$ X4 n: O+ r1 c( I! h1 G7 Z+ X
- (setq *error* olderror) ; 恢复旧的错误处理
2 \" v8 [5 I4 J; I! i$ A5 S - (princ)6 X' q6 O# Z( P5 \1 Q
- ); r% f- e) V. n+ P# [4 d
- , Z5 Y- C' l# x# A4 D4 ]2 K. \
- (defun spring (nRepeat cntPoint bhfac lr strad bvfac& M+ Z7 m' L' a0 o$ \+ z
- / angle distnc tp aGrw dhGrw dvGrw Pi2 dv)
! S1 W5 p9 x: {7 g4 [ - 0 @/ M: L5 m) p8 ]. r
- (setvar "blipmode" 0) ; 关闭 blipmode , ]% e$ c4 G _
- (setvar "cmdecho" 0) ; 关闭 cmdecho
* b8 x; N! _( p. k5 P( o0 z - (setq Pi2 (* 3.14159265 2))
# U1 u* O5 m, }. {: D- E" i0 X - (setq aGrw (/ Pi2 lr))) T+ I* g4 ^1 a# w
- (setq dhGrw (/ bhfac lr))0 G2 @; U+ E L0 A
- (if bvfac (setq dvGrw (/ bvfac lr)))
6 M% ^) Y8 e) D( {/ {8 U - (setq angle 0.0)* q2 | d( d C3 ]* |3 n% B1 ?( ]
- (if bvfac K2 u" i: c4 k$ B8 x
- (setq distnc strad dv 0.0)
1 Y4 F, z8 V3 F' o - (setq distnc 0.0)
. J4 i9 x9 s* V& k4 u - )
% \, u. @+ d& n2 n! P - (if bvfac
1 v$ r4 ]+ u5 N+ E3 a$ ^4 l! Q - (command "3dpoly") ; 开始绘制弹簧
1 E% ^/ v" c P- J - (command "pline" cntPoint) ; 从基点开始绘制弹簧
5 d$ U. T+ l! N - )
: o$ x' ]7 ^0 L# w! Z! l! ^ x - (repeat nRepeat ( w, k. I( z- p6 X, P9 Q# K N$ o4 v% D
- (repeat lr
% W0 t0 D4 _# x) R% w1 K - (setq tp (polar cntPoint (setq angle (+ angle aGrw))+ U0 o# O$ U* N! B- w
- (setq distnc (+ distnc dhGrw))
/ G' z7 _/ \- r3 c$ r' Y1 ` - )# E6 [$ |) F) A* G: n9 m
- )) p5 g4 d7 `. U/ B# |. j
- (if bvfac7 b6 F! o+ n+ M2 p, h! l
- (setq tp (list (car tp) (cadr tp) (+ dv (caddr tp)))
" c( p, X. X# G* `. w$ n! b" Y - dv (+ dv dvGrw)
7 v/ b5 H* h- c4 F% F - )
4 r$ ?9 J' T g* A; w0 I% O* D - ): W& X9 b! f1 p }% m z
- (command tp) ; 继续输入下一点
* G- i7 `) I) c9 w# m - ), x8 o0 j* L2 k3 {
- )
- X7 ?4 P4 w! {; g - (command "") ; 输入结束
! R2 {2 Q& D5 w$ \: u - (princ): i" Y6 |9 j% w, [
- ) . ]) G5 s M) |2 r0 u
- # A B2 ]. ^; _0 I, x5 {
- ;;;
9 J% D3 V7 R2 O - ;;; 生成三维弹簧函数调用接口
9 K2 t& `: L1 f" M9 X9 ~/ r; f - ;;;
5 _* M5 f+ P7 _
4 G4 `0 R. S$ U i- (defun C:3DSPRING (/ olderror cmdch blpmd cntPt RottCnt horiGrw vertGrw bgnRdtn ptCntPerCircle)
5 z2 d# `5 Z# r5 S' X2 e - (setq cmdch (getvar "cmdecho")) ; 获取cmdecho值，以便调用结束后恢复
% i9 R# b, B% f - (setq blpmd (getvar "blipmode")) ; 获取blipmode值，以便调用结束后恢复
9 T3 V% |4 V% T9 y0 B4 ^. U" x - (setvar "cmdecho" 0) ; 关闭 cmdecho / C; H! v$ o u, Y1 E2 I
- (initget 1) ; cntPt 必须非空
3 j* E) y7 R' \* @0 {: `# o - (setq cntPt (getpoint "
( I; O5 x$ e- r. U. {- Z& |" R$ [, O - 请输入底部中心点: "))
7 B+ Z9 y& B; A/ l8 o- g S - (initget 7) ; RottCnt 必须非零、非空,不可忽略
/ ?( E, O7 x8 H1 l- l/ M" E/ S - (setq RottCnt (getint "
, o# x) _6 h3 ? - 旋转的圈数: "))3 M1 G# p! L4 }3 o- |7 j% p
- (initget 7) ; bgnRdtn 必须非零、非空,不可忽略
1 f) O: l* U$ N - (setq bgnRdtn (getdist cntPt "
5 w/ [0 O, d b3 D - 起始半径: "))
: w4 O' C: u2 ?% a+ b& W' u - (initget 1) ; cf 必须非零、非空9 }9 W; Z$ g Q
- (setq horiGrw (getdist "9 E* ~- F; q- a3 i! U5 u
- 每一圈的水平增长距离: "))
! h* m1 u+ H0 U5 w4 e - (initget 3) ; cf 必须非零、非空
$ `: N% g1 J9 |2 n- \ - (setq vertGrw (getdist "7 V" \- P( q0 b, J2 H! A/ n# _5 V
- 每一圈的垂直增长距离: "))
% C9 F/ ^1 `" Q- F( t9 T - (initget 6) ; ptCntPerCircle 必须非零、不可忽略
7 {1 b1 t) {7 z7 U8 |, n - (setq ptCntPerCircle (getint "
7 u; x; C$ _; O' ? - 每一圈的插值点数<35>: "))
( z7 W: _: X8 N/ r/ {; J0 Y! a3 ] - (cond ((null ptCntPerCircle) (setq ptCntPerCircle 35))) 5 H7 x' g4 o6 h( g3 X0 @ V
- (spring RottCnt cntPt horiGrw ptCntPerCircle bgnRdtn vertGrw)& M6 h8 {) g% v/ c1 j
- (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值
$ K, j2 k2 g+ Q0 w/ D! N% {9 S: U B7 B - (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值5 l Y) n1 Q/ t) o/ n, e
- (setq *error* olderror) ; Restore old *error* handler
3 S# |5 t; x% n - (princ)6 H' u$ Q+ B! J$ J9 X% H! _0 q5 {+ J
- 3 ]1 c& k/ k) ^* ~- \1 B
- ) # O7 Q+ n7 \! l5 x5 S6 l% g9 N
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发表于 2006-4-14 13:10
发表于 2006-5-5 10:43
