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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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：# `1 Z; g: _/ Q9 p2 @
一、齿轮轮齿渐开渐开线3 [3 y3 H% r$ i# D' k
9 D8 K2 d) h+ h0 L- (defun c:gear(/), }% {( n$ _& \; L% P2 D, ~
- (
* c+ e# Q4 T# L/ I: B8 L( c1 R! v" t - setq
4 U+ b4 {" ?) S2 a# z - p0 (getpoint"输入齿轮中心p0: ")4 k5 T0 i& k3 }/ B) t) S
- m (getreal"输入齿轮模数M: ")
# f; G$ k( V \ l& f% A3 U - z (getint"输入齿轮齿数Z: ")
5 E5 @4 w( l1 R/ g - ha 1
' [7 r/ ~0 J( z - c 0.25 l: m1 a4 y' x2 c3 P" U
- a (/ pi 9)
# `3 D F4 V3 E! Z, ^; i - ra(/ (* (+ z (+ ha ha)) m) 2)
2 ?: e6 Q6 l, g2 X - rf(/ (* (- z (+ (+ ha ha) c)) m) 2)6 `, Z; p% O3 F3 D
- r(/ ( * m z) 2)
1 G+ H0 F4 m: R - rb ( * r (cos a))
* c' K2 ^- H9 x. @: p* a0 e' c - ri rb2 V1 @4 c- r! j, ~& s L- M" V
- ang 0, ^+ Q; @! n0 S l, w
- g (polar p0 ang rb)
0 ?, r" g/ O5 D7 b% n- K0 { - ): x7 T+ t# c* m4 i3 R
- (command "circle" p0 ra)* m$ g. e0 O6 f% X
- (command "circle" p0 rf)
. d+ X0 E |4 c - (command "circle" p0 r)
3 ^$ h$ z, B. \! `" \8 T6 p - (command "line" g)& c7 o# @. Y- Q% R* z2 X
-
" A5 D( [; f3 c7 F! I - (while (< ri ra)
7 c) W" H0 N1 v: u - (setq0 o+ f( u3 r. T1 K
- ang ( + ang(/ pi 360))
H! o; j7 Z/ @ _: X* v) x - ri ( / rb (cos ang))' j ~8 U6 X+ b! r) j
- cta ( - (/ (sin ang) (cos ang)) ang)4 `$ h4 Y- k: {$ q" M1 c& e
- g(polar p0 cta ri)8 f4 e9 h& n, p0 \/ ?' I Z( w& c
- )5 u Z$ }$ W4 W9 z
. W) s2 o: ^, H" w3 A- (command g)
' ^7 _8 X) B0 T - )
- C( W- L3 y/ D - (command ) ' ]5 s6 L" Y9 t4 j& a$ F+ N7 P
- )& B" `9 Q9 L) u0 l5 \% Y
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: t7 ?: d/ w( o# x8 ^: U二、螺旋源程序+ z; e4 ]9 q1 Q( `5 `7 b
( E9 R- k) w4 a9 d
- (defun errMsg (s)' j2 }& S1 Q8 w. }6 @
- (if (/= s "function cancelled") (princ (strcat "
; t$ N3 h! w* W# Z7 Q% L" H1 W) v. j - Error: " s)))! [$ i( |7 z1 w, W, E$ i( I
- ; 当命令执行时出现错误
6 v `- M D' f$ q - (setvar "cmdecho" ocmdold) ; 例如用户按下了CTRL + C
; `' [) D4 _9 K5 `6 V( ]4 y - (setvar "osmode" osmold). y: L5 x8 N4 t/ i( E, C: y
- (setq *error* olderr) ; 恢复旧的错误处理
$ b$ H( |& E. k/ F: v" D. L - (princ)! T | }1 n2 l; _8 z
- )% x) ~7 E; r# R+ T
- X r' l, _( P1 [! F; r( Q1 E- (defun c:3Dthread (/ radouter threadpitch threadlength threadangle
1 {; s# N6 d- J+ S9 _5 _- A$ O - ptStart innerdiafactor radmid radinner ocmdold osmold 4H 5H 6H h6 g6)
8 ~5 V" f3 o9 W7 y' N. Z - ;-------------------------------------------------------------------* ^+ r8 Z: h; F- c3 E9 A ]
- ; 获取公制外径大小、螺距总长& J! m! M- d' F t/ S( Q, j
- ; 然后计算一系列几何点
! h% r2 [ I' Y' n - ; 并且关闭对象捕捉、命令回显
8 z2 ?2 B5 t9 e, n2 x - ;-------------------------------------------------------------------. p6 p8 P) b/ X( |$ R6 ]9 [
- (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)) ! F" O# M3 h# W" H9 f! v+ c+ G
- (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)) . h- s. j) Z" d
- (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)) 1 t8 U5 f" [- \- s4 z
- (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)) # W- z+ c4 }/ l: t& i! z" S6 y
- (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))
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- (setq osmold (getvar "osmode")) ; 保存调用前的osmode系统变量值( q! ^9 ]8 x9 i; v9 U9 R
- (setq ocmdold (getvar "cmdecho")) ; 保存调用前的cmdecho系统变量值
2 M' J7 T0 q, I0 {: e# f: i - (setvar "osmode" 0) ; 关闭对象捕捉
) b+ d. c& s* ~$ O1 r0 }7 g - (setvar "cmdecho" 0) ; 关闭命令的回显( \6 a5 h1 D& e/ W: f
. E0 H8 S# x/ g2 j6 v7 n- (setq innerdiafactor 1.5) ; 设置内径系数
2 n# L0 o c6 }* P. x. w* s - (initget 7) ; radmid 必须非零、非空、非负
! K6 j! C' e; S) F+ M3 G - (setq radmid (getdist ". H3 A; z! V% w, S3 u
- 公制外径: "))
( H. l+ M- z" |: f/ }; u - (initget 7) ; threadpitch 必须非零、非空、非负7 c: e+ U- ]3 h* D% ~
- (setq threadpitch (getreal "
( a( n" \7 F! U& J7 m; G - 螺距: "))$ k% l* |& _* V3 }
- (initget 1) ; ptStart 必须非空
0 ^5 p6 x+ i3 O: t+ C. x - (setq ptStart (getpoint ": }! L: J0 t- q& @) ], J
- 起始点: "))# q7 `. S( U/ J6 _7 s3 J" G
- (initget 3) ; threadlength 必须非零、非空、非负+ Y E& g/ p1 V9 f% h
- (setq threadlength (getdist "1 C- f/ H3 K" b- b, a* L2 f
- 螺纹总长(Y方向): "))4 g+ O( R r: v7 G
- . `( M9 g( [$ k8 C
- ; 对公制外径添加公差
+ {0 y3 t) j4 r - (if (<= radmid 3) (setq order 0) ; 根据公制外径确定公差带中位置4 ^5 g# s8 b+ N9 Q3 i' X
- (if (<= radmid 6) (setq order 1)4 E4 |+ K% z* }( I8 o2 d F0 V! H
- (if (<= radmid 10) (setq order 2)- V+ ~# [4 r/ @# C7 V, J
- (if (<= radmid 18) (setq order 3)- q, A) f+ ~5 O, ]2 _
- (if (<= radmid 30) (setq order 4), J( c3 Z' Q) u# q3 a( Z# M _. C
- (if (<= radmid 50) (setq order 5)# w2 Z O2 L- R+ _0 \
- (if (<= radmid 80) (setq order 6)
a. }$ ]! H. B- s5 I: t" v - (if (<= radmid 120) (setq order 7)' U% b8 i; g* [, D. a3 s
- (if (<= radmid 180) (setq order 8)
; [: v: J: [ {" Q6 w: f; q: ~ - (if (<= radmid 250) (setq order 9) a( ]. w3 n6 P8 T# {& a
- (if (<= radmid 315) (setq order 10)
" r3 ?1 S3 T5 t2 J - (if (<= radmid 400) (setq order 11)3 A( {! l7 h$ R
- (if (<= radmid 500) (setq order 12)0 _0 A4 _: P. ~
- )))))))))))))) e" _4 }# O0 j9 j3 c: J5 ]
. }- V, {1 u" o9 I/ [- (if (< threadpitch 0.25) (setq radmid (+ radmid (nth order 4H))) ; 根据螺距确定公差带
& u B( T4 K' |% l& `- r0 n - (if (< threadpitch 0.35) (setq radmid (+ radmid (nth order 5H))). c/ X0 K6 n: S: W$ E7 X# U0 ^
- (if (>= threadpitch 0.35) (setq radmid (+ radmid (nth order 6H)))) ]3 g1 d- a$ ~; I1 y) g
- )))
' e4 Y! ^. G3 M7 g' z: V - 8 X/ n- J9 ]; q Q, @' x$ ?
- (setq h (* 0.866025 threadpitch)) ; 计算齿高
5 t6 c& ?5 ?" ^- ~; o3 C0 x" Q - (setq radouter (+ radmid (/ h 4))) ; 计算外径
( H) J7 B8 T! g) D0 k7 o, a - (setq radinner (- radouter (* h innerdiafactor))) ; 计算内径" O3 b& S O( g8 K0 p5 v
- (setq threadangle (+ 30 0)) ; 计算齿顶角
`/ |9 d; Y1 Y9 R2 e' q- s# I - ) O1 I; _9 T% O" b
- (auxithread radouter radmid radinner threadpitch threadlength threadangle ptStart) ; 调用绘制三维螺纹的子函数
3 |. e- X; Z$ N! r! G( P$ m - 6 @5 p4 L: o; X) H, o- K
- (princ "
* J6 q1 x) `; E8 Y7 C! K" A- Q - 三维螺纹创建完成")
; i, u+ D2 J0 C/ ~4 h4 K% l/ J$ @ - (setvar "osmode" osmold) ; 恢复调用前的osmode系统变量值
8 V( F- w$ ~2 R# w# b- B& Y. N/ m - (setvar "cmdecho" ocmdold) ; 恢复调用前的cmdecho系统变量值
" [* r: G& D) W5 m( q. Q3 k - (princ)! K; L& ]1 z: n, ?- P+ u
- )0 ^ ^1 C( J+ H: f) d. @3 {
- 9 x- g/ I( ~7 b: }( ~, U2 a
- (defun auxithread (radouter radmid radinner threadpitch threadlength threadangle ptStart / ttal pt1z ang pt1a
8 Z4 D+ ~% ~8 X+ G9 `, ~ - pt1az pt3a pt1b pt1bz pt3b pttmp1 pttmp2 pttmp3 pttmp4 pttmp5 pttmp6 pttmp7 pttmp8 pttmp9 pttmp10 pttmp11 pttmp12 tstmp startcone endcone)
/ ]6 ^; u* M" ?: f. a - 2 {( X' I# ?5 ?, w' O
- ;(command "undo" "begin") ; 开始undo步骤
* ~) Y# `3 v/ F& b, }. T8 s3 K - 3 ?+ } W6 C+ W" F$ J: h0 u+ [1 ~
- (setq ttal (+ (fix (/ (abs threadlength) threadpitch)) 3)7 {4 Z' i [' ]9 K* Y; u" u
- pttmp1 (list (- (car ptStart) (/ radouter 2.0)) (cadr ptStart) (caddr ptStart))
5 J) r5 L! x+ o - pt1z (list (- (car ptStart) (/ radouter 2.0)) (cadr ptStart) (+ (caddr pttmp1) 1.0))
7 X) Z( Y" g& m6 j; T0 N - pttmp2 (polar pttmp1 (/ (* threadangle pi) 180.0) 1). F! `4 }4 F9 H; }* }( s6 ]: h8 X3 P
- pttmp3 (list (+ (car pttmp1) radouter) (+ (cadr pttmp1) (/ threadpitch 2.0)) (caddr ptStart))( {; S3 o" m+ d, _: B3 P
- ang (angle pttmp1 pttmp3)
o3 K( {+ p. w- c" O - pt1a (polar pttmp1 (+ ang (/ pi 2.0)) threadpitch)! I* ~( S( g, G9 [2 q' O
- pt1az (list (car pt1a) (cadr pt1a) (+ (caddr pt1a) 1.0))8 H8 J. V7 T7 f
- pt3a (polar pt1a ang radouter)
2 p$ o$ @* ~3 e0 Y9 P - pt1b (polar pttmp1 (- ang (/ pi 2.0)) threadpitch). [; x1 G3 k& s" W3 h! P
- pt1bz (list (car pt1b) (cadr pt1b) (+ (caddr pt1b) 1.0))
6 R# {0 x6 a) |( Z8 V/ `2 v - pt3b (polar pt1b ang radouter). X0 X& z5 I+ m# w2 B
- pttmp4 (polar pttmp3 (/ (* (- 180 threadangle) pi) 180.0) 1)
! r7 F" l6 {2 F& F - pttmp5 (inters pttmp1 pttmp2 pttmp3 pttmp4 nil)
# \( B$ d2 Q4 s# E- n - pttmp6 (list (car pttmp5) (cadr ptStart) (caddr ptStart))( a: y- }/ [8 F. }
- pttmp7 (polar pttmp1 (/ (* (- 360 threadangle) pi) 180.0) 1)
' V8 G. @0 \* j6 _8 M, R- j% f - pttmp8 (polar pttmp3 (/ (* (+ 180 threadangle) pi) 180.0) 1)
$ f/ H: R( d$ U1 X$ r - pttmp9 (inters pttmp1 pttmp7 pttmp3 pttmp8 nil)
0 e: V D5 c" q* N. V8 K4 D - pttmp10 (list (car pttmp9) (cadr pttmp3) (caddr pttmp3))
* B0 G. v) r x) Y - pttmp11 (polar ptStart (/ pi 2.0) threadpitch)
, p9 F2 W5 [5 Z- _- \: W - pttmp12 (polar pttmp11 (/ pi 2.0) (abs threadlength)) J' z9 F( w8 w3 _
- )
2 m) T6 g Z! T$ [# w$ R+ V - ; |) N4 B6 O& }' I6 D$ y
- ;-------------------------------------------------------------------
/ R" \) \) \% r2 q% s3 \$ s - ; 绘制两个倒置的并偏移1/2螺距的圆锥: S/ `, O2 J1 I h; F5 ?3 S
- ; 这两个圆锥都以中剖面剖分
9 r. {9 y) M5 Y9 g) M: p - ; 进行并集运算& {) h% w# N2 [% M
- ;-------------------------------------------------------------------
* H& R- o( t# q! a t6 m, P L
% a4 s) H8 t1 `+ X3 v- (SETQ startcone "order")( j: R( M: A( ?3 C: _1 e2 z! `
- (SETQ endcone "Y")
8 N1 v+ U3 @* A, a3 _5 [ - (command "zoom" "w" (list (car pt1a) (+ (cadr pt1a) (abs threadlength)) (caddr pt1a)) pt3b)& m6 h' A/ _! f9 n
9 _5 v/ {6 O0 A8 e8 V' b- (princ "
8 Y1 _ B4 `6 Y" p E+ o! F' M - 正在绘制三维螺纹，请等待")1 q1 s% b$ F9 b% K0 v! C
- (command "pline" pttmp1 pttmp5 pttmp6 "c")! I9 }) Z5 S. I. C) F
- (command "revolve" "l" "" pttmp5 pttmp6 "")2 N9 B2 _. F' Q2 p, K3 }
- (command "slice" "l" "" pttmp1 pttmp3 pt1z pttmp5)
7 i1 \6 o9 d1 `+ q3 D) { - (command "slice" "l" "" pt1a pt3a pt1az pttmp3)
2 l7 }; @ l, K. D# ] i; R - (setq tstmp (ssadd (entlast)))
' q& J( |5 J4 b+ C- ` - (command "pline" pttmp3 pttmp9 pttmp10 "c")
- ^3 ]3 c' X/ l, }+ a - (command "revolve" "l" "" pttmp9 pttmp10 "")
* O! Y. Q) h* T8 B% }1 @1 o - (command "slice" "l" "" pttmp1 pttmp3 pt1z pttmp9)* G5 P! s' l+ ~
- (command "slice" "l" "" pt1b pt3b pt1bz pttmp3)0 Z, K- \1 q2 C
- (setq tstmp (ssadd (entlast) tstmp))1 }8 e7 e9 `/ z
- (command "union" tstmp ""); j( c6 Y, I! ]& l/ ~
- 5 I6 b0 K8 ]% [+ e
- ;-------------------------------------------------------------------
: t. a. r' t+ K, [8 e8 { - ; 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
8 J5 s+ F" D: Y1 ^ m4 y - ; 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' r& J- z' J2 B5 U7 Q
- ; 在最后一步被切除
/ _0 _0 G/ U- [8 E- z - ;-------------------------------------------------------------------% K9 _' Z& h; k) C$ a% ]
4 k0 u- C- A; a3 A2 W4 ?! g$ _- (command "slice" tstmp "" "xy" ptStart "b")
! o9 L3 M8 w: S, y7 H! c - (setq tstmp (ssadd (entlast) tstmp))
, G# Z) s8 U Y! q9 j+ i% z U. e - (command "mirror" "l" "" pttmp1 "@10<0" "y")
) S0 J& E7 G. y9 { z, I: _7 o - (command "union" tstmp ""), k& Y% s: {' A3 n5 |
- $ Z2 W8 k6 c( L0 c: ]' Y
- ;-------------------------------------------------------------------" b) A& i: H+ x- |& M8 {! P) j0 m
- ; 螺旋进行阵列操作，然后再作并集（可能会耗费一定时间）3 T- g3 ?+ L7 k! x2 _' f( J
- ; 得到的实体再切除到指定的螺旋高度9 x4 y! Y1 X' Q2 u! i
- ;-------------------------------------------------------------------
" S3 g' h2 c2 f/ u. O6 E0 N7 j - + s8 v: L3 ^4 B
- (setq e (entlast))9 P a$ N X6 K: k: A( d
- (command "array" tstmp "" "r" ttal 1 threadpitch)
) ~, b/ |& o' Y% v5 N, k1 { - (repeat (1- ttal)
. q. ?/ v f: l: @9 E' f - (setq e (entnext e)
9 A. Z; I( E3 l& N. S - tstmp (ssadd e tstmp)
) R0 s* z- I5 F/ r# P; N - )
$ B4 m& d0 `" U- m4 u& n. }$ O - )6 Q( n$ h! p: a. r/ l9 l
- (command "union" tstmp "")! p9 j' f X. P( c2 K
- 2 |5 G# z5 _+ T( U5 ?0 ]: u
- ; 若开始创建45度的圆锥
1 i# R9 Y k! t- S2 N+ u4 z) b: g9 h - (if (/= startcone "order")
1 C# T# h, b9 B r - (progn (setq e (entlast))
7 m/ `7 {$ n: Y$ ^5 v" ^ - (command "cone" (list (car ptStart) (+ (cadr ptStart) threadpitch) (caddr ptStart)) "d" radmid "a" (list (car ptStart) (+ (+ (cadr ptStart) (/ radmid 2)) threadpitch) (caddr ptStart)))- N9 b3 ?5 ?' E: N$ [
- (command "union" "l" e "")
. E& ^ m! [% ?) h5 k - )
/ i3 T8 K7 r5 h2 t6 N& i4 Y - )
6 f: Q4 Q' S6 ]$ o
0 v5 E/ B* @8 j: s- (command "slice" "l" "" "zx" pttmp11 pttmp12)0 @+ M& G0 s! O8 a( {
- (command "slice" "l" "" "zx" pttmp12 pttmp11)
2 c& U7 _1 _+ V. b" r& H: u; t - (command "move" "l" "" ptStart (list (car ptStart) (- (cadr ptStart) threadpitch) (caddr ptStart))) , E$ z) @9 {) G0 y: o
- # F. P8 C7 ^0 O
- ; 创建最小直径的圆柱体，然后与螺旋作交集
& z1 J# P! w% R' p! ?2 i2 d6 ~ - (setq e (entlast))
/ i" }! a P+ o7 s) j - (command "cylinder" ptStart "d" radinner "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart))): z& R3 A; z# n, e( [! O
- (command "union" "l" e "")1 @0 G+ I6 s" R) O" h: Y+ C! D
- (setq tstmp (entlast))
v! Z3 [8 T, o' Q6 |3 P
" y( N' {0 l8 S( h5 h- ; 创建中空的圆柱体
3 B& C; y/ N* A - (command "cylinder" ptStart "d" radmid "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart))) ; minor dia
! n6 ?2 Z Q+ U7 X6 F$ _1 v: T - (setq e (entlast))' t& }( h2 ?8 g/ f/ O9 A7 |
' P) E2 n' s6 l- ; 若最后创建45度的圆锥" f2 I6 Q; D5 ]
- (if (/= endcone "order")
( w, o+ o7 ^" D& m - (progn (command "move" "l" "" ptStart (list (car ptStart) (- (cadr ptStart) (/ (- radmid radinner) 2)) (caddr ptStart)))
2 e4 c$ p$ A; ~& ? - (command "cone" ptStart "d" radmid "a" (list (car ptStart) (+ (cadr ptStart) (/ radmid 2)) (caddr ptStart))) $ n* v& X, r9 P" }+ l
- (command "move" "l" "" ptStart (list (car ptStart) (- (+ (cadr ptStart) (abs threadlength)) (/ (- radmid radinner) 2)) (caddr ptStart)))
) S: c1 L. {; S4 D! Y, k. z - (command "union" "l" e "") - t- W8 M+ x2 \) q5 m7 C6 i
- (setq e (entlast))
$ H- S' F: V9 l# ?2 v - )$ K/ m" M9 k$ L- n4 F& `, V0 o
- )( h7 ]8 z9 e) d2 e/ H6 }, T
- [$ |- F$ x' m! l1 G: U- ; 从大圆柱中减去小直径圆柱
" H3 C9 [ U5 ]0 G3 G& ] - (command "cylinder" ptStart "d" (* radmid 1.5) "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart)))
' A; q4 j/ H! V( X4 d t0 b0 d' H - (command "subtract" "l" "" e "")1 J- ^$ [- f/ S: r- f2 h, q; q
- (setq e (entlast))( G) H; s( v5 j3 F9 a, j6 H+ t
( \' b5 ^' V1 R5 X' L) H% |: J8 M- ; 从螺旋中减去圆柱
! ^/ h9 ^, S. S" R$ c. {0 }+ [ - (command "subtract" tstmp "" e "")+ h/ ^' E, i. J
/ Q0 H. V( A8 C' g: O% t6 X+ a- ; 如果螺旋长度为负然后镜像
$ ~+ B- P. i9 I. n: ^5 p, ? - (setq e (entlast))( J- v( e% Q: w/ w1 O
- (if (< threadlength 0) (mirror3d e "zx" ptStart "y"))8 }6 @* X- ]% @% s7 Z
/ V f3 ^4 K7 @, M* k. t8 S- (command "zoom" "p"). a& q3 m8 ]1 r. @ }: W: f1 W
- ; (command "undo" "end") ; 结束undo步骤" P+ n& p. h% Q" u: w
- )" g4 {, f+ K5 e1 g( Z! f: a, @
0 V. o, ]8 ^4 [8 x- ;;;---------------------------------------------------------------------------------------------------------------------;/ B5 V) m5 u6 }) V) u7 b; {
- (arxload "geom3d" nil)
+ K3 ^( b. }! `* v- z& X: b - (princ "
8 W/ H# H o* b! ^9 } - 3DThread 已加载。 ")$ h4 O' P* A1 Y, l# H, k) _8 [
- (princ)
/ I6 U; p8 m6 H9 N; G3 x( @! ~
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0 ?5 Y. M" F5 [7 e C. \ K1 F( c
三、弹簧源程序8 U! {- y1 y* z8 c
- (defun errMsg (s) ; 当命令执行时出现错误 2 X% @& t G9 ^9 L- m. h" m
- ; 例如用户按下了CTRL + C
% |/ x8 s" T n - (if (/= s "Function cancelled")3 M. r/ R6 O5 ^- @9 e) `; F$ t
- (princ (strcat "
3 s! C% V+ T9 ^" T5 Z/ u! T I - Error: " s))
% d c2 Z" q; g% Y& t8 ^0 B- n - )
& @: W C, ?+ W - (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值
& O \& R9 h E j7 N - (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值: a+ I! S: l: {3 d* k4 N6 ^
- (setq *error* olderror) ; 恢复旧的错误处理
7 J4 v. E% c8 E( x' I- w2 { - (princ)0 o; U- ?1 }; h" z7 e
- )
+ O$ y5 \' {2 U( d1 }
6 k8 h3 X" x/ l( {- (defun spring (nRepeat cntPoint bhfac lr strad bvfac- T9 N% G' E+ w9 ?& P
- / angle distnc tp aGrw dhGrw dvGrw Pi2 dv)
9 H8 D4 Q j) ^' a4 m4 X
2 G. B2 H m6 c% n4 C- (setvar "blipmode" 0) ; 关闭 blipmode 2 b# Z4 `; M% \, @ A: n/ O9 H2 z
- (setvar "cmdecho" 0) ; 关闭 cmdecho* Y9 x$ z# I3 ^) E
- (setq Pi2 (* 3.14159265 2))" Q0 x: Q4 s( |; p. u+ v9 L7 T! X
- (setq aGrw (/ Pi2 lr))3 M( h) q- @; O! C0 E) z1 ?
- (setq dhGrw (/ bhfac lr))( a7 B! E" ~0 u3 `
- (if bvfac (setq dvGrw (/ bvfac lr)))$ Z$ \6 T; m! E$ `3 x8 r" x. W
- (setq angle 0.0)
+ |$ K) i+ z7 e. v! ? - (if bvfac% s6 M5 G; q( @3 k z5 v9 W3 B
- (setq distnc strad dv 0.0)& x5 x) G' t) _7 _% f
- (setq distnc 0.0); f" B0 ^6 ~9 U2 a- b
- )% n* a9 P' M8 q: G" ^
- (if bvfac : U7 Z" ^8 o3 Z% H( Q0 w! _; \& C
- (command "3dpoly") ; 开始绘制弹簧) k, R! q1 p# v) K2 G1 m) m
- (command "pline" cntPoint) ; 从基点开始绘制弹簧. N0 R* o# f% j2 v6 Y: s
- )
4 _' X. |6 e2 @9 |) m) x/ r - (repeat nRepeat
% j' d% V, r; Q# Y+ ] - (repeat lr
5 J/ M3 _+ ~! w2 Z2 `2 p8 R. g" U - (setq tp (polar cntPoint (setq angle (+ angle aGrw))+ H3 i; f# `7 h8 B+ {" L% m
- (setq distnc (+ distnc dhGrw))
& d1 t* l# s3 y9 Q& \ - )+ p1 m* K5 c$ o [
- ) b8 U( }1 W+ n6 K# s. q- d+ L
- (if bvfac) I4 c d: Q4 \! d. `7 t5 d5 U
- (setq tp (list (car tp) (cadr tp) (+ dv (caddr tp)))
- w9 }+ u1 ], G+ h, x7 ~2 \ - dv (+ dv dvGrw)" Q& M, p8 r) q1 M" b
- )
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- (command tp) ; 继续输入下一点, U6 }6 E+ I1 I' I
- )
B+ e6 D, m. s0 t; J, W8 W* D - )
/ l; ^. O* a! f8 r' @) D( ?5 t- V - (command "") ; 输入结束" s3 y# O+ W) C9 k
- (princ)! w( v9 m0 C, f( w; n/ o8 w) l
- )
5 e1 K8 D6 i/ v. h! _ - ' w% W. _5 Q- o
- ;;;
+ \* M X' {# g. o - ;;; 生成三维弹簧函数调用接口
! f9 R7 j7 ^; d* k ~8 S! h - ;;;& D& a' D- D5 u/ c- X1 j
- ( C( S7 m( p1 I0 v( l" y
- (defun C:3DSPRING (/ olderror cmdch blpmd cntPt RottCnt horiGrw vertGrw bgnRdtn ptCntPerCircle)
* q" j' }" i+ X; j# ~$ H7 o - (setq cmdch (getvar "cmdecho")) ; 获取cmdecho值，以便调用结束后恢复
# x0 b. V" \+ Y- k - (setq blpmd (getvar "blipmode")) ; 获取blipmode值，以便调用结束后恢复) R. f) k0 U5 b7 R
- (setvar "cmdecho" 0) ; 关闭 cmdecho
. L+ P* r2 }( A! R' I' u% E - (initget 1) ; cntPt 必须非空" t; Q% R7 G& ^6 s. G( N$ Q
- (setq cntPt (getpoint "
2 i& N( z+ [. W$ h. e! W - 请输入底部中心点: "))$ w. P: _& }3 h& s
- (initget 7) ; RottCnt 必须非零、非空,不可忽略
0 h4 G' y! F* F* { - (setq RottCnt (getint "
2 x3 O) _4 H! s# l - 旋转的圈数: "))
' K# C* _+ |. C - (initget 7) ; bgnRdtn 必须非零、非空,不可忽略! ~+ \; X, f1 C$ J
- (setq bgnRdtn (getdist cntPt ". C9 k$ i$ m/ Z U k3 V
- 起始半径: "))
% n% F/ V) u+ u5 S - (initget 1) ; cf 必须非零、非空3 f6 R$ |7 G# M" P% R
- (setq horiGrw (getdist "* [! n, e% \. a4 [2 \
- 每一圈的水平增长距离: "))0 u# ?2 M4 w- {' n
- (initget 3) ; cf 必须非零、非空 g m5 r+ S( q. `% \
- (setq vertGrw (getdist "
# e4 z R/ n' I: v* F$ T$ h. ~ - 每一圈的垂直增长距离: "))
{) R8 V0 c; {9 C s: h' T - (initget 6) ; ptCntPerCircle 必须非零、不可忽略
; e, j+ C; e; j) y7 p3 F2 l - (setq ptCntPerCircle (getint ") v( p3 ^% l- R* o$ y# S: D
- 每一圈的插值点数<35>: "))' F- K Z5 p/ ]) K. {5 v6 v
- (cond ((null ptCntPerCircle) (setq ptCntPerCircle 35)))
+ m6 C. p1 [0 D% |& K4 _4 m7 v1 W - (spring RottCnt cntPt horiGrw ptCntPerCircle bgnRdtn vertGrw)8 {9 N; y1 J, U9 Y) X. O
- (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值) w8 E: C0 b W
- (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值
- V9 H& h. v1 |8 x5 H2 ]9 C - (setq *error* olderror) ; Restore old *error* handler/ d7 ~+ d, v0 A' x9 i2 p
- (princ), K9 J' u5 m3 V3 U# N
- $ v! N, R: K! Z% _! m. q5 i
- )
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发表于 2006-4-14 13:10
发表于 2006-5-5 10:43
