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发表于 2008-7-2 23:08:45
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来自： 中国河南郑州
为照顾老版CAD用户，上传正天圆地方插件（网上找的LSP）一个，经过试验，抽壳做法不行，可以通过复制、差集。。。。。的办法。' C- G& E5 J/ n9 D$ e/ H, M7 [
" W) ]/ | Q0 V, |, Y! }(defun c:tydf (/ ppp a ab b r h x y z p01 p02 p03 p04 p1 p2 p3 p4 pt11 pt12 pt13
% `- J! J- k' S5 F* M5 t+ u pt21 pt22 pt23 pt0 pt1 k e c ang ang1 ppp1 ppp2 ppp3 ppp4 ss)# c$ u# d9 p3 X8 G" ?2 m, d* F& @. k$ I
(setvar "cmdecho" 0)$ }% d% ]1 P7 o2 O2 }
(alert "本程序已将UCS设为世界坐标系！")9 ^5 L% a4 U* @) j! T; C9 M6 a
(command "ucs" "w")
' y9 J. E& J7 S' S4 { (setq ppp (getpoint "\n请输入地方的中心点"))
7 o0 s# k/ K0 r- t" p (setq a (getdist ppp "\n请输入地方的半长度:"))) s. c o7 v( o ~" A n1 C2 R, t
(setq b (getdist ppp "\n请输入地方的半宽度:"))
9 o2 O8 }8 t; V. W+ @; t; { (setq r (getdist ppp "\n请输入天圆的半径:")). O. v+ [# |0 M+ y8 @% O
(setq h (getdist ppp "\n请输入天圆地方的高度:"))
4 u5 P$ @% E/ X" I/ ^) S! ] (setq ss (ssadd));;;;;/ e9 G5 S" T: g& H! q
(if (< a b)% _4 U' o- a; j) y4 s
(progn; V& z z9 `/ [% m9 `8 p
(setq ab b)0 n3 u' g( |; I3 Z
(setq b a)7 g% |& f' K) x/ j/ q9 N% ?0 }1 t) F
(setq a ab)/ b8 ~& R- D: e$ U
)
2 b+ m: L* }" n3 c% t ): V- O: n4 x7 {$ i5 G7 x) Y! P
(if (< b r)
% N1 {$ ^* Z- u1 P+ L (progn
8 Z9 } A: N3 ^' i0 \3 t (alert"您要画的是天圆地方，圆的直径不能大于“地方”的宽度和长度!")2 X" \6 y( Q3 d) Q6 @1 Y$ E
(exit))
( L4 j" L* T- ?. M. V )1 k. ]' S; O: E; b3 f5 q; q0 p3 C
(setq oldos (getvar "osmode"))( L9 _' t" b5 i8 ?/ J C6 J' L
(setvar "osmode" 0)
$ T! v! R! w& n* P (setq x (car ppp))) d$ i& S4 z# ]# f$ l
(setq y (cadr ppp)). f' L0 V" j" }: @7 r3 C
(setq z (caddr ppp))
( K6 X: T* G# ?: X* m% U (setq p01 (list (+ x a) (- y b) z) ;第四象限点
! X# h. ?$ y7 \$ @+ C: v4 X z. v) Q p02 (list (+ x a) (+ y b) z) ;第一象限点
& V) q- S( K' U) e3 V4 L/ n p03 (list (- x a) (+ y b) z) ;第二象限点) w5 H; I9 w7 Z* W4 u P
P04 (List (- x a) (- y b) z)) ;第三象限点
5 q" x) b# T3 D$ S& b (command "rectang" p01 p03)4 d: E% u% P: [0 Z
(setq aa (atan (/ (- b r) h))) ;angle = Atn((b - d) / (2 * h))
0 Z( M& j6 v6 h8 x' X (setq ang (R->D aa)) ;弧度转化为度6 r& Z7 j( c. v% Y
(setq p12 (list (+ x a) y z))
$ F6 P! Q( X- q. X; W/ J$ g/ o9 c (setq p23 (list x (+ y b) z))
/ K; w8 A7 `9 Q( M& J5 \* V (setq p34 (list (- x a) y z))
* R; H6 ~- H0 q (setq p41 (list x (- y b) z))6 }- Q! k% y6 g: B: u+ V
(command "extrude" (list (entlast) p23) "" h ang);;;;;;
( t% Y6 q, V2 z6 S P8 a9 c# g (ssadd (entlast) ss);;;;;
1 D7 `& u: I" n+ `' I9 R. K9 {- t7 d (setq p1 (list (+ x r) y (+ z h)) ;+X点& [, ?' s) M& D0 y, L( J: _( t# s8 {
p2 (list x (+ r y) (+ z h)) ;+Y点
* A/ Z+ K& T! R p3 (list (- x r) y (+ z h)) ;-X点
4 A+ l% d& m* L2 e8 M$ z" j) I: b+ y p4 (list x (- y r) (+ z h))) ;-Y点
' I( a9 O+ I+ I* A/ ]. |9 l (command "slice" (list (entlast) p23) "" p01 p02 p1 p03) ;;;;;; b- J/ y3 r9 S
(command "slice" (list (entlast) p23) "" p03 p04 p3 p01)7 v; s& Y* i: p+ J" ]/ a/ h# [; ^% l1 {
(command "slice" (list (entlast) p23) "" p01 p4 p1 p3). w/ m0 X6 s# ?. d9 b% ]
(command "slice" (list (entlast) p23) "" p02 p1 p2 p4)
) M9 D7 [. ^ f) Z (command "slice" (list (entlast) p23) "" p03 p2 p3 p1)
: I2 Z6 n( @/ T+ ]; Y (command "slice" (list (entlast) p23) "" p04 p3 p4 p2)
' O2 ?' C: j3 T5 | (setq pt11 (+ x (* r (cos (atan (/ b a)))))# E/ p: K% l" t) {* X9 v
pt12 (- y (* r (sin (atan (/ b a))))), f# t: ?* F- |9 Q X3 `$ a4 P
pt13 (+ z h))
2 y, S& C- `) f6 o; Z8 n* O+ f (setq pt1 (list pt11 pt12 pt13)) ;射线交点1% z9 o9 J. o) Y( N& a1 W
(setq pt21 (- x (* r (cos (atan (/ b a)))))
+ d* I; C; k8 T pt22 (+ y (* r (sin (atan (/ b a)))))2 y4 A3 |7 e; i; n( d" C
pt23 (+ z h))
6 l+ E) W$ ?: ^" O& \ (setq pt2 (list pt21 pt22 pt23)) ;射线交点23 Q, { z: G+ F4 d8 Q
(setq d01 (distance p01 pt1)- J2 a+ @& ^% |& I
d02 (distance p01 pt2)" l& z: j, i! X- x% q$ W4 \) ~
d12 (distance pt1 pt2))0 O! |% a h' o, }' T% b) w* p+ G
(setq c (/ d01 d02))
5 Y( {: r$ v$ z% Z (setq pt01 (/ (+ pt11 (* c pt21))(+ 1 c)))
/ d* C3 Y- w7 P0 u: U (setq pt02 (/ (+ pt12 (* c pt22))(+ 1 c)))- N. n% \6 L, p0 t
(setq pt03 (+ z h))
2 r6 R2 B* _7 f7 P, s) k* K6 R (setq pt0 (list pt01 pt02 pt03)) ;椭圆锥圆心
. m% n; K/ N# `& d5 u( ]/ J' V. b (setq k (angle pt0 pt1)), C+ P. }8 t V
(setq aa (sqrt (* (distance pt0 pt1) (distance pt0 pt2))))
4 s" P' z0 }4 m (setq e (/ (- (+ (* d01 d01) (* d02 d02)) (* d12 d12))
% y% L I3 G3 D4 ?4 p: v (* 2 d01 d02)))$ S0 _7 {, Q" e6 l
(setq ang1 (+ (atan (/ (- 0 e) (sqrt (- 1 (* e e))))) (* 2 (atan 1))))
6 |( X2 k- H8 v, y9 w2 G (setq bb (/ (* (sin (/ ang1 2)) (distance p01 pt0)) (cos (/ ang1 2))))
1 D6 {/ d5 g$ V- \ A- c& Y (command "ucs" "za" pt0 p01)
# j6 \0 P5 I% ^3 y# K (setq pp1 (list aa 0 0))2 ~* L7 c% d! m; \" r$ [
(setq pp2 (list (- 0 aa) 0 0))
, P4 s/ n7 W) D7 {9 L9 d0 C7 ? (setq pp3 (list 0 0 (distance pt0 p01))); W7 b% O7 ^: V! \2 n6 I3 N
(command "cone" "e" "c" "" pp1 bb "a" pp3)
1 k4 |4 U$ i1 Y: X' j (command "ucs" "p")
; H. q1 Z+ n# \8 }* M/ V (command "slice" "l" "" p1 p2 p3 p01)/ A0 a/ p* u/ m6 n' l! M
(setq ppp1 (list (+ x (/ r (sqrt 2)))(- y (/ r (sqrt 2)))(+ z h)))
/ M5 Y7 h" {/ z$ w+ e h (setq ppp2 (list (+ x (/ r (sqrt 2)))(+ x (/ r (sqrt 2)))(+ z h))): I4 o" ]' _! A; {2 B5 Q% m, k
(setq ppp3 (list (- x (/ r (sqrt 2)))(+ x (/ r (sqrt 2)))(+ z h))); R- a3 I7 T# J' b" U' n0 O- D
(setq ppp4 (list (- x (/ r (sqrt 2)))(- y (/ r (sqrt 2)))(+ z h)))
+ U# C5 f1 L+ m (command "slice" "l" "" p1 p4 p01 (list (+ x a) (- y b) (+ z h)))0 J4 V6 r& o6 B6 [" u* k! \
(ssadd (entlast) ss);;;;;;
- \9 v& |" U, R/ V" e% U j+ } (command "mirror" "l" "" p23 p41 "n")( ]% N$ e* k* d ]9 u/ R& P
(ssadd (entlast) ss);;;;;;0 Z/ ]# {! K& C: C5 b" d
(command "mirror" "l" "" p12 p34 "n")
% j( t& g& A0 {3 y (ssadd (entlast) ss);;;;;;
y3 u1 p% ~9 K. M' ~; }8 W (command "mirror" "l" "" p23 p41 "n")
1 [' W' Y( S% d5 Z+ J* s2 T (ssadd (entlast) ss);;;;;
8 S& N& E9 Q3 z7 s (command "union" ss "")1 l$ n |! K/ B7 a
(setvar "osmode" oldos), v; G) X- j& l
(princ)
( w" A) g; L- o/ o- l5 c)
# t+ v q! s) l* j' p(defun R->D (number)9 @6 a- d6 I1 k6 m# S8 D5 y6 J
(* 180 (/ number pi))% c! L6 ?) _* E3 V: A- j
)
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[ 本帖最后由 woaishuijia 于 2008-7-3 17:24 编辑 ] |
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发表于 2008-7-2 17:13:25