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
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, u9 w) T9 j0 W0 X, Q8 X. 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：9 L' e- P, G1 f1 Q4 `1 |0 ]
一、齿轮轮齿渐开渐开线; K& O5 C+ k5 L" r2 \1 h
- 8 j: o8 e, h2 R. h+ v0 H
- (defun c:gear(/)% c6 k3 u* ?( A" W( l( q4 @) {3 Q
- (
) M; N, P4 ~) Q8 e1 n - setq4 V. N: U* Q8 ~/ z+ O7 n
- p0 (getpoint"输入齿轮中心p0: ")
9 Y0 Y) ]6 v% ]! m, k1 g P - m (getreal"输入齿轮模数M: ")' P1 f. \# T5 {" U
- z (getint"输入齿轮齿数Z: ")
4 b+ X% Y) Z7 D! ?' _ - ha 1
" `" G9 j/ Y0 E% ]- V# u; v - c 0.25+ @9 }5 {: K8 z5 A8 _
- a (/ pi 9)6 G% f1 S* q; p" d6 T
- ra(/ (* (+ z (+ ha ha)) m) 2)
# {, n0 @$ @- m3 k P - rf(/ (* (- z (+ (+ ha ha) c)) m) 2)
! h. D5 E: ^ X, q. ]! c& i - r(/ ( * m z) 2)
0 [- X% N* d: I: I4 ~/ s - rb ( * r (cos a))+ e. Q# }3 x- G& B+ g% H! g" g
- ri rb
$ T. k+ F0 c3 L- i9 k8 p) ` r - ang 0
$ Y( c$ G. D3 t' G - g (polar p0 ang rb)
2 {+ u0 O9 o, P" `2 r% E8 T& H - )
- s, @0 @; J4 u4 ]/ D Z) H% i - (command "circle" p0 ra)8 g q- ~# T4 `% b6 t4 g9 S( ]2 }
- (command "circle" p0 rf) I9 h7 E# n2 L9 ~
- (command "circle" p0 r)7 H9 B5 }; t1 z! C; l. C
- (command "line" g)
/ U1 d! Z) E. q3 L7 E - 7 R+ s$ M( w6 k" w k+ @
- (while (< ri ra)
. H9 {/ a# l! z0 r - (setq
' V- \, B# G4 d# c - ang ( + ang(/ pi 360))9 f6 i' G8 V3 q% L/ j' z {4 o& w
- ri ( / rb (cos ang))( \5 K( J' E$ z) z0 @, K5 }2 y
- cta ( - (/ (sin ang) (cos ang)) ang)
/ ~6 \5 O8 ~* A7 o: _ - g(polar p0 cta ri)
0 h0 E" v3 A3 s; T% h - )
9 d- ]6 G$ R) C+ L& T
, i6 t- u9 q1 j$ I- (command g)7 B' Q, k" S5 t* ]8 c, x# V
- )
) J4 G p" q/ o2 a7 U, |7 _6 a - (command ) ! N" t, e: P' }
- )
% i6 `: ]9 e0 q, ]9 K- x5 [/ |
: i/ _3 z ?5 U/ k# U% j+ x7 [, A
* u7 E* T+ Y) c$ Z' S
二、螺旋源程序
! z1 d3 ]3 l4 v" H, a# B2 C' m8 W; n/ S) ~) X7 U! y
- (defun errMsg (s)
9 @7 p& L* V2 }; } - (if (/= s "function cancelled") (princ (strcat "
8 M( Y6 ~' C ]1 V - Error: " s)))
, G% m j0 r ` - ; 当命令执行时出现错误 I! D/ v: a1 l- |. {% a
- (setvar "cmdecho" ocmdold) ; 例如用户按下了CTRL + C
2 i) F( e9 j* G& ] - (setvar "osmode" osmold)
& M! o- s0 R7 K2 ]/ y! u! Y - (setq *error* olderr) ; 恢复旧的错误处理
, }1 K+ R2 c% o* d - (princ)4 { l/ Z- `* j. n9 S: V, R
- ) O6 [1 V5 K+ E' F4 ~
- + C: P( H+ \5 O% \
- (defun c:3Dthread (/ radouter threadpitch threadlength threadangle # t; O% w# l6 \6 C- i2 i% t
- ptStart innerdiafactor radmid radinner ocmdold osmold 4H 5H 6H h6 g6)& X0 A5 M! e9 Y
- ;-------------------------------------------------------------------6 ?. }- z( f+ x5 M. A# {
- ; 获取公制外径大小、螺距总长/ j1 i+ w6 u* B% ~! P/ v# ?
- ; 然后计算一系列几何点3 J1 h8 Q& u( A2 P5 }+ l
- ; 并且关闭对象捕捉、命令回显
$ v+ [+ O) H9 Z& I - ;-------------------------------------------------------------------6 Q1 p% `! Z* ^, ?: ?, L. V
- (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))
) ^6 g* P- U3 b2 `9 T - (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))
& D" F+ o5 t3 i5 P, o" p7 v - (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)) t: |" ?& ^9 \5 y% r6 v
- (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)) 5 B' F* A4 X) S' C) ~! ~
- (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))
N k$ V& W* \, O! A0 r$ z
3 z ] _! s! [. }( Q( ^% G# l- (setq osmold (getvar "osmode")) ; 保存调用前的osmode系统变量值
8 a6 ?: H% Y5 X5 T* Z - (setq ocmdold (getvar "cmdecho")) ; 保存调用前的cmdecho系统变量值& v) R( {* E5 b. y7 Z! I
- (setvar "osmode" 0) ; 关闭对象捕捉 % g) F9 n- W1 s9 |* u1 j$ V
- (setvar "cmdecho" 0) ; 关闭命令的回显 I+ p6 j, @0 G
- 8 V2 P4 M8 h, q% n
- (setq innerdiafactor 1.5) ; 设置内径系数
& [; P6 \" X, D' b. A" e: M8 P. B - (initget 7) ; radmid 必须非零、非空、非负
6 X* ~* k) P) I2 f% M - (setq radmid (getdist "
3 W5 g( P3 J% C: E$ B! Q - 公制外径: ")), X) K3 @+ m# T+ ?+ L
- (initget 7) ; threadpitch 必须非零、非空、非负
0 |7 b' P& q5 u& ]- Z - (setq threadpitch (getreal "
( \2 @" k# ?9 L - 螺距: "))
, r( s, F' B2 ^ - (initget 1) ; ptStart 必须非空
8 ^" k9 @: n! y0 ]2 j2 s$ L - (setq ptStart (getpoint "! x/ _/ J1 Q3 U3 `9 q* C- s% M5 z3 b
- 起始点: "))
+ u8 s! R4 v1 y0 V" Z+ t - (initget 3) ; threadlength 必须非零、非空、非负- K& f7 f, ?. V B' L$ I8 [
- (setq threadlength (getdist "
% G9 ^! I4 y% F; m; i - 螺纹总长(Y方向): "))
0 p5 J3 l A* x. c5 N9 b9 A - 5 c* k) g. z% S1 k0 F6 t/ E& v& a
- ; 对公制外径添加公差
- \0 J& D: g5 v& l - (if (<= radmid 3) (setq order 0) ; 根据公制外径确定公差带中位置
) @; E" I: N/ E$ w* x# ~ - (if (<= radmid 6) (setq order 1)+ c( F0 n9 \0 r( i7 d
- (if (<= radmid 10) (setq order 2)0 v+ J$ _) f, m6 F" S7 n
- (if (<= radmid 18) (setq order 3)+ t$ c2 F) h" C$ _0 Y
- (if (<= radmid 30) (setq order 4)8 r6 E# y* p8 x { D3 w
- (if (<= radmid 50) (setq order 5)
- N1 b$ N! x' l7 D/ e$ y - (if (<= radmid 80) (setq order 6)
2 j% D8 m, f: g$ @, o- V% M3 m - (if (<= radmid 120) (setq order 7): l: s& p! N$ {& `0 n, o
- (if (<= radmid 180) (setq order 8)
+ q1 N$ p4 S- ^4 A& _* P! s - (if (<= radmid 250) (setq order 9)8 e: ?/ z& v6 c" p) G/ R9 w
- (if (<= radmid 315) (setq order 10)
/ _( u9 \) a, ^) \1 S - (if (<= radmid 400) (setq order 11)4 p+ O9 n4 N4 r5 D# R
- (if (<= radmid 500) (setq order 12)
7 H3 g# T9 d% N9 S9 H - )))))))))))))3 @) J/ ?0 X9 u4 A4 t( L
8 Y6 l% n! Y' { H2 v- (if (< threadpitch 0.25) (setq radmid (+ radmid (nth order 4H))) ; 根据螺距确定公差带" j5 q9 p8 B4 T& w: n
- (if (< threadpitch 0.35) (setq radmid (+ radmid (nth order 5H)))& G! {; R) X' g) D: ~ F
- (if (>= threadpitch 0.35) (setq radmid (+ radmid (nth order 6H)))
* l! M8 s7 v: ^/ U$ O0 u: b- U - )))$ A+ R0 p* q B# i
- 0 m% I# L: |# m9 q
- (setq h (* 0.866025 threadpitch)) ; 计算齿高1 c# s* T$ n0 n. K1 L
- (setq radouter (+ radmid (/ h 4))) ; 计算外径
$ S& |. r1 Y2 t" y0 M) _ - (setq radinner (- radouter (* h innerdiafactor))) ; 计算内径5 D) u: E& ]$ S+ H- C G R- o. n
- (setq threadangle (+ 30 0)) ; 计算齿顶角7 W( L" s5 C9 d
) N& M2 h9 N1 x8 I- (auxithread radouter radmid radinner threadpitch threadlength threadangle ptStart) ; 调用绘制三维螺纹的子函数; r( P ^1 P- }
- 1 C4 h% O: ?8 M R4 j( F
- (princ "8 d* Y s8 A- m/ S; G' V i7 H3 t! P
- 三维螺纹创建完成")8 }! _- @+ F7 d* b6 q
- (setvar "osmode" osmold) ; 恢复调用前的osmode系统变量值
9 B; j! l: q& p4 U8 e - (setvar "cmdecho" ocmdold) ; 恢复调用前的cmdecho系统变量值
/ Q' o/ b: t: ? o - (princ); b6 V+ E0 W% S6 F
- )* j, z& N, B' `1 `/ s& \( V2 `
8 {7 C4 K) R- p& W( i! u3 ^- (defun auxithread (radouter radmid radinner threadpitch threadlength threadangle ptStart / ttal pt1z ang pt1a( x' ~* z. b: @+ O
- pt1az pt3a pt1b pt1bz pt3b pttmp1 pttmp2 pttmp3 pttmp4 pttmp5 pttmp6 pttmp7 pttmp8 pttmp9 pttmp10 pttmp11 pttmp12 tstmp startcone endcone)( b+ `: v4 g0 r# k1 c+ A
- , f' O4 @7 ?; r' S5 }
- ;(command "undo" "begin") ; 开始undo步骤" N" O7 s. Z$ _5 z1 g Z( G; w
- # s! J. X2 S2 Y" z# m c8 R
- (setq ttal (+ (fix (/ (abs threadlength) threadpitch)) 3)
2 n/ O( e$ U% Y) \& x/ N3 Y% { - pttmp1 (list (- (car ptStart) (/ radouter 2.0)) (cadr ptStart) (caddr ptStart))
+ Y9 R1 A; Z- T( b4 j - pt1z (list (- (car ptStart) (/ radouter 2.0)) (cadr ptStart) (+ (caddr pttmp1) 1.0))
2 \" ~ T+ |# W- ~; o& D8 Z, l/ H0 G - pttmp2 (polar pttmp1 (/ (* threadangle pi) 180.0) 1). F! e, q, `( F* u: \
- pttmp3 (list (+ (car pttmp1) radouter) (+ (cadr pttmp1) (/ threadpitch 2.0)) (caddr ptStart))2 B3 N9 C& z/ |. r) z
- ang (angle pttmp1 pttmp3)$ f, @2 e: w+ f9 ~ x$ ~2 d
- pt1a (polar pttmp1 (+ ang (/ pi 2.0)) threadpitch)
4 z) Z) Q" G( c( k$ D3 p - pt1az (list (car pt1a) (cadr pt1a) (+ (caddr pt1a) 1.0))
8 B" l& O! r3 h0 z0 O6 o6 a; Y4 H - pt3a (polar pt1a ang radouter)
' q0 E" h8 D( ?% m! W' A, Q9 _ - pt1b (polar pttmp1 (- ang (/ pi 2.0)) threadpitch)
1 V' h% q/ [8 F; |% r" V - pt1bz (list (car pt1b) (cadr pt1b) (+ (caddr pt1b) 1.0))
) z- J3 j* _. G - pt3b (polar pt1b ang radouter)( T% q7 L6 U- ~$ b4 V$ O/ r2 ]* l
- pttmp4 (polar pttmp3 (/ (* (- 180 threadangle) pi) 180.0) 1)8 W R' B2 ^& X, p' g5 T; ], }- j
- pttmp5 (inters pttmp1 pttmp2 pttmp3 pttmp4 nil)
8 S3 k( F$ n, \& q/ I& u* X - pttmp6 (list (car pttmp5) (cadr ptStart) (caddr ptStart))0 A+ J% P" A; V; E
- pttmp7 (polar pttmp1 (/ (* (- 360 threadangle) pi) 180.0) 1)
/ V! J: U/ c5 W0 _, p, V* E - pttmp8 (polar pttmp3 (/ (* (+ 180 threadangle) pi) 180.0) 1)6 X- g/ n. }) n/ A8 J y
- pttmp9 (inters pttmp1 pttmp7 pttmp3 pttmp8 nil)/ P# S2 G$ _" u9 Z" L
- pttmp10 (list (car pttmp9) (cadr pttmp3) (caddr pttmp3))
/ d& c' K1 X& v6 V1 n1 V - pttmp11 (polar ptStart (/ pi 2.0) threadpitch)( Z( R3 I: D- B; r f9 V# G0 K
- pttmp12 (polar pttmp11 (/ pi 2.0) (abs threadlength))
) G4 U( @& ]0 M/ b' r2 g - )5 T- ]' [- h3 p# R5 T7 Y7 v( {
1 \4 y) Y4 z( d5 j6 a- s7 ?" Y- ;-------------------------------------------------------------------
# L, e3 r' e" B7 O; V - ; 绘制两个倒置的并偏移1/2螺距的圆锥
% ^1 e2 n4 s9 B% }5 N - ; 这两个圆锥都以中剖面剖分: o ~! z+ c9 T" }* p6 h
- ; 进行并集运算: C: w6 p1 A E% x* B6 v9 y0 H% h6 l
- ;-------------------------------------------------------------------' N/ o+ t( j( w) l( G) a. ^
- 7 v2 R( ^% b! `4 ~
- (SETQ startcone "order")
$ M( ]/ q) o% G- A% ^5 ]* S - (SETQ endcone "Y")
* a( x0 i) h/ \5 V8 B0 [5 t Q - (command "zoom" "w" (list (car pt1a) (+ (cadr pt1a) (abs threadlength)) (caddr pt1a)) pt3b)
}# C) Z1 E8 y, f& o/ M! _ - 0 z+ Z- I" @$ q; J. n; \. a! ?" {/ i
- (princ "( k. Z8 C1 z4 M7 x7 K
- 正在绘制三维螺纹，请等待")
" d. _$ e- C- m - (command "pline" pttmp1 pttmp5 pttmp6 "c"): i4 z/ O) _% |/ z, ~: f
- (command "revolve" "l" "" pttmp5 pttmp6 "")
6 l5 M& P4 }( \ - (command "slice" "l" "" pttmp1 pttmp3 pt1z pttmp5)
- S9 a1 W% x; g# Y1 V - (command "slice" "l" "" pt1a pt3a pt1az pttmp3)* y& M. {/ N0 g
- (setq tstmp (ssadd (entlast)))" a, O' I/ i5 D1 O7 h* b
- (command "pline" pttmp3 pttmp9 pttmp10 "c")
L2 A: D' d D - (command "revolve" "l" "" pttmp9 pttmp10 "")
( }) g$ v, C# M* m - (command "slice" "l" "" pttmp1 pttmp3 pt1z pttmp9)) S9 `, k' w" f4 @: O; ^
- (command "slice" "l" "" pt1b pt3b pt1bz pttmp3)
: {( `" h A5 s) o9 w - (setq tstmp (ssadd (entlast) tstmp))$ O1 ?' C1 ^( {: R. \
- (command "union" tstmp "")
* k' ?4 J7 t7 H
7 y4 |( g, Z( l- ;------------------------------------------------------------------- Z; L* g3 l0 `9 q
- ; 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3 M% T- g2 Z$ p4 O1 ^
- ; 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 ]" H/ \5 u7 r! J/ |" T
- ; 在最后一步被切除( F% h$ u% G! r
- ;-------------------------------------------------------------------
. {) p" _/ T0 U! [1 p1 K - , u0 a2 n) E( J9 d7 m
- (command "slice" tstmp "" "xy" ptStart "b")2 L; t0 q p3 Y" V
- (setq tstmp (ssadd (entlast) tstmp))
@( z+ X* D0 R; X - (command "mirror" "l" "" pttmp1 "@10<0" "y") p, @* f! i2 h+ k6 E
- (command "union" tstmp "")9 U! p- V( T% e
- : j5 s& f. i/ z0 k; d0 ^) P
- ;-------------------------------------------------------------------
0 n T2 @2 b; f6 D' q/ X7 F' o - ; 螺旋进行阵列操作，然后再作并集（可能会耗费一定时间）1 O9 C7 E: h4 H
- ; 得到的实体再切除到指定的螺旋高度6 o& \7 P r( X) K3 [; Q8 r( K2 R3 k
- ;-------------------------------------------------------------------: n, L0 h% \$ ]* Z$ R3 n
- 7 [" D2 ]& }2 s. N8 ?' g' \: G
- (setq e (entlast)), M$ r6 Q1 }5 ^* i5 r+ e$ R
- (command "array" tstmp "" "r" ttal 1 threadpitch)
% x& I& e! W7 D1 }" ^* y( Q3 m - (repeat (1- ttal)! J9 W& l7 C4 }# r
- (setq e (entnext e)
/ V$ X5 L v1 p$ f - tstmp (ssadd e tstmp)
9 m) R- ~: R$ C1 m5 d" x. I - ): }8 C" C+ l I; d
- )4 _" [9 k2 a7 {# ?# ?! z4 v
- (command "union" tstmp "")- F5 j- a2 h; `) _3 g1 U
- 1 \4 {2 Y( w K3 _; j4 d
- ; 若开始创建45度的圆锥
/ p" ^) g4 q; ^& T; g, L% H- g - (if (/= startcone "order")
) L! e! q1 w$ B9 Z& e0 w - (progn (setq e (entlast))
4 H+ Q2 V0 A7 y$ @7 f" a - (command "cone" (list (car ptStart) (+ (cadr ptStart) threadpitch) (caddr ptStart)) "d" radmid "a" (list (car ptStart) (+ (+ (cadr ptStart) (/ radmid 2)) threadpitch) (caddr ptStart)))* X" h4 r' ` V5 r# \1 C
- (command "union" "l" e ""). w Q5 N$ b8 q4 o2 `
- )/ v9 w O' G, u8 F7 v% Q! }! l+ y" P
- )# W0 p! _& I1 H# Y' T7 z8 j" I
- 3 V5 p3 w. S7 f
- (command "slice" "l" "" "zx" pttmp11 pttmp12)* _/ L1 p0 r, j V
- (command "slice" "l" "" "zx" pttmp12 pttmp11)
$ Z- F+ L, F* P) P - (command "move" "l" "" ptStart (list (car ptStart) (- (cadr ptStart) threadpitch) (caddr ptStart))) + H8 i6 f+ G4 A" {8 R
- , r" _# T: u$ i) _* I i. H
- ; 创建最小直径的圆柱体，然后与螺旋作交集* }1 I! k0 E' T: t# H7 C8 E
- (setq e (entlast))
5 O3 b% P" o( {4 l& V - (command "cylinder" ptStart "d" radinner "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart)))
4 [: p9 ?) y7 W6 ~& a - (command "union" "l" e ""); @$ H5 |0 O: N6 y; W
- (setq tstmp (entlast))
$ T1 Q) [- z. O0 k
0 E4 W3 L' M4 ~( Y* e$ |$ Y1 L- ; 创建中空的圆柱体% k7 ]2 _1 Q0 l5 I- O
- (command "cylinder" ptStart "d" radmid "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart))) ; minor dia( i" t: P- E+ P1 h% F1 s5 ]
- (setq e (entlast))& `* E- t/ |/ s
- # O" j+ J& [/ r/ [$ t+ }
- ; 若最后创建45度的圆锥
4 o: n& b: X' w: F7 N& m - (if (/= endcone "order")8 |- P5 _: B3 k* l1 e
- (progn (command "move" "l" "" ptStart (list (car ptStart) (- (cadr ptStart) (/ (- radmid radinner) 2)) (caddr ptStart))) # _7 K% ]1 }. m: z" v. S6 [% J8 u
- (command "cone" ptStart "d" radmid "a" (list (car ptStart) (+ (cadr ptStart) (/ radmid 2)) (caddr ptStart))) % j" x8 l! f' D0 l9 F- ?$ x `
- (command "move" "l" "" ptStart (list (car ptStart) (- (+ (cadr ptStart) (abs threadlength)) (/ (- radmid radinner) 2)) (caddr ptStart)))" C0 `; y8 M x: b' |* v
- (command "union" "l" e "")
8 J4 [. a4 E1 x1 ~% B - (setq e (entlast))
* s9 u+ ~- g+ W! h3 W - ). H- p5 c* L3 {7 g; u
- )
- j8 d I& m5 i% \; H
; X9 {1 M6 c. r" ?* m- ; 从大圆柱中减去小直径圆柱7 d3 N, a i0 H8 P1 x2 s
- (command "cylinder" ptStart "d" (* radmid 1.5) "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart)))2 P6 G4 P( ^: r' ?) f$ G9 @
- (command "subtract" "l" "" e "")
3 A! ]: c/ K, T# r - (setq e (entlast))7 W9 b2 H" v% j- U+ K+ y0 A
- 1 |! B% L$ l* u6 r: \0 _ {- \: q
- ; 从螺旋中减去圆柱
, s: A, y' w9 T8 F0 }: n - (command "subtract" tstmp "" e "")8 w, h" [, t( g3 A
- ; W; x2 O8 l) \/ U3 c
- ; 如果螺旋长度为负然后镜像
- e) f Q2 V7 n2 Z+ J# ] - (setq e (entlast))0 l8 h5 `3 d; F) b/ p4 O
- (if (< threadlength 0) (mirror3d e "zx" ptStart "y"))3 U `0 y0 `3 b5 L$ R
* `5 I8 v; y) u$ s5 O9 G5 B5 C% P- (command "zoom" "p")
7 x1 h- i( l" ]* f- I$ V - ; (command "undo" "end") ; 结束undo步骤
% ^2 s: u: l' p6 I$ T& w - )
. K$ f/ B$ D6 l; h - ! \. P! q. o, v
- ;;;---------------------------------------------------------------------------------------------------------------------;
) \+ R& l& C5 [7 v - (arxload "geom3d" nil). \' v9 c- a. V$ w# P+ E8 P
- (princ "3 n" a) r5 [9 K- ?7 D
- 3DThread 已加载。 ")
; v ~$ L9 i; j: U6 ] - (princ)
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三、弹簧源程序
; I$ ?+ Z! u. b2 ?! a. F- (defun errMsg (s) ; 当命令执行时出现错误 / c; O- N. r) L5 \
- ; 例如用户按下了CTRL + C5 z ^: q; @/ M( l( j" l
- (if (/= s "Function cancelled")
' i4 {" f% [1 z* s6 t" w! @* { - (princ (strcat "
9 ?+ A9 j- `# l, X5 j! ^0 v2 y, P6 E - Error: " s))
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- (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值
; l4 ~# h9 p0 d - (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值. j3 d' ^: O4 E2 A) J
- (setq *error* olderror) ; 恢复旧的错误处理/ E3 a% H8 k9 a. ?. F
- (princ)
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- (defun spring (nRepeat cntPoint bhfac lr strad bvfac0 {1 `: Q2 ^" E" y# |6 ]( t& @8 a
- / angle distnc tp aGrw dhGrw dvGrw Pi2 dv)
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- (setvar "blipmode" 0) ; 关闭 blipmode
; h0 D2 d1 G- l( e - (setvar "cmdecho" 0) ; 关闭 cmdecho8 z# B1 p9 k8 p# w! }6 h
- (setq Pi2 (* 3.14159265 2))
, w2 O- s: W; g) H! i - (setq aGrw (/ Pi2 lr))
& M( A0 E. D) l" M# _ - (setq dhGrw (/ bhfac lr))
) ~0 t1 k6 c$ k/ n* s - (if bvfac (setq dvGrw (/ bvfac lr)))- w) m$ _% L7 Q4 u6 _# f5 s
- (setq angle 0.0)1 Z" U6 ^5 l$ m% R, i
- (if bvfac
" i% V$ v% W1 p7 t0 B% m - (setq distnc strad dv 0.0)
& I, Y9 }, B' g& B5 b4 u6 u - (setq distnc 0.0)
- }7 T' H8 N; C: n6 Z - )
# Y( |" u# i* J* h. L' M - (if bvfac
3 l: Y0 x7 O; }0 g0 o2 ` - (command "3dpoly") ; 开始绘制弹簧
" }) R! \1 @0 B6 L- P' C1 H - (command "pline" cntPoint) ; 从基点开始绘制弹簧
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2 F9 ~+ {; n6 Z0 p9 v' e- `/ E e - (repeat nRepeat
9 }& b. V0 n9 Y O$ y$ g6 W" q% I - (repeat lr 9 ^$ k) w- {- C& `7 ~: Q$ d
- (setq tp (polar cntPoint (setq angle (+ angle aGrw))1 m6 |+ Z# ?" e$ ~! U
- (setq distnc (+ distnc dhGrw))$ y8 q: l% h6 l* j( V: }
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- )! j3 h# W! d* x' e2 d) o
- (if bvfac& L- Y$ N& y/ q+ M# n! E& ?! X
- (setq tp (list (car tp) (cadr tp) (+ dv (caddr tp)))
! ]8 C: e' C& P/ U" q - dv (+ dv dvGrw)
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- (command tp) ; 继续输入下一点
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- (command "") ; 输入结束
8 E5 l. [6 |0 D9 H+ @. g - (princ)
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- ;;;5 x3 H8 \& G1 ^7 m8 O
- ;;; 生成三维弹簧函数调用接口
4 \0 G4 [& X0 I& q% g$ N - ;;;
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R" @' z8 A" R* L, z- (defun C:3DSPRING (/ olderror cmdch blpmd cntPt RottCnt horiGrw vertGrw bgnRdtn ptCntPerCircle)
" n. _9 {2 q0 B. E, ?% F; D/ Y$ W: a$ [ - (setq cmdch (getvar "cmdecho")) ; 获取cmdecho值，以便调用结束后恢复
! N1 q. z% C" {& c1 V& O1 {/ s- A - (setq blpmd (getvar "blipmode")) ; 获取blipmode值，以便调用结束后恢复
6 R7 q2 a/ Z. E; u% L1 g - (setvar "cmdecho" 0) ; 关闭 cmdecho
8 D4 ` z4 P* H& ]( Y$ _5 h - (initget 1) ; cntPt 必须非空
" Y2 }7 ~6 U& j - (setq cntPt (getpoint "4 l& }7 M) o" U
- 请输入底部中心点: "))
4 h3 \- @/ ~+ ]6 R8 { - (initget 7) ; RottCnt 必须非零、非空,不可忽略 f. Q4 a6 z8 W5 ?/ \! v9 F
- (setq RottCnt (getint "
( q% ^# P! O. `' E - 旋转的圈数: "))
. [3 r" `8 G# F- {5 U$ V$ D: u+ n - (initget 7) ; bgnRdtn 必须非零、非空,不可忽略
% u4 O( C* }% C4 p- g, A- H - (setq bgnRdtn (getdist cntPt ") R" E# X4 z( I2 x+ A& b3 W3 y
- 起始半径: "))
2 Q, T' V& I) ?# C - (initget 1) ; cf 必须非零、非空7 H6 J1 e" K8 ], k+ I7 V
- (setq horiGrw (getdist "
& i% A, X h. M r - 每一圈的水平增长距离: "))
( s/ W w6 C8 _ C, X# f - (initget 3) ; cf 必须非零、非空
; r, j: A7 M* q5 e- } - (setq vertGrw (getdist "; `6 S; r/ b0 V4 m* U: M
- 每一圈的垂直增长距离: "))2 |+ `1 Q. A" ]+ O" ^
- (initget 6) ; ptCntPerCircle 必须非零、不可忽略6 K; N, Q+ x6 r: Z) ]; S) ^
- (setq ptCntPerCircle (getint "/ C( {* d7 C+ P+ T! {8 P; F5 [ S
- 每一圈的插值点数<35>: "))- m5 d) h) x4 V8 ?- @: H
- (cond ((null ptCntPerCircle) (setq ptCntPerCircle 35)))
- ]9 }* x& S( d8 T - (spring RottCnt cntPt horiGrw ptCntPerCircle bgnRdtn vertGrw)
. M6 N9 v8 u3 H - (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值
& b* R. d. u. o% D7 N7 y: ~ - (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值/ v$ e* g n" ^; h5 {
- (setq *error* olderror) ; Restore old *error* handler
8 w8 e, ^+ D3 } q( \ - (princ)
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发表于 2006-4-14 13:10
发表于 2006-5-5 10:43
