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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。
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(defun c:tydf (/ ppp a ab b r h x y z p01 p02 p03 p04 p1 p2 p3 p4 pt11 pt12 pt13
7 |/ T. ~2 _( [8 }8 _3 c pt21 pt22 pt23 pt0 pt1 k e c ang ang1 ppp1 ppp2 ppp3 ppp4 ss)( _& {! j( O5 q0 x5 T4 |, Z! v
(setvar "cmdecho" 0)' _" Y0 N( s- C0 W# b# U( W
(alert "本程序已将UCS设为世界坐标系！")
& K! j* Y: N' {3 F i (command "ucs" "w")8 [: f3 `3 I- t' Y' R: h" v
(setq ppp (getpoint "\n请输入地方的中心点"))
- \+ M! W0 t) }! N: { (setq a (getdist ppp "\n请输入地方的半长度:")). v# f5 D; O: o- ? S
(setq b (getdist ppp "\n请输入地方的半宽度:"))1 H9 s2 J: _; l' w
(setq r (getdist ppp "\n请输入天圆的半径:"))$ D- [/ [+ J/ \9 `8 l4 ?5 b& F
(setq h (getdist ppp "\n请输入天圆地方的高度:"))
' S! Q0 Q" C. w9 ] (setq ss (ssadd));;;;;
" {9 m: M# k' Q6 l% M8 Y0 D( f (if (< a b); A6 N/ U7 m% ~ K8 K+ n) V6 _
(progn
. q! e+ x Y! x7 i2 t& @) v (setq ab b)! d' b5 Q# j# j; [& A
(setq b a)
6 y1 n ?# O4 a, V" J1 d (setq a ab)- B/ j! U( j% e) v n5 T& \2 V! j
)* q2 F$ `/ W2 Z1 @0 i
)
! A$ ~/ N1 H( }. x, g9 e (if (< b r)- H7 H- \1 A9 B1 ^; Q
(progn! Y" S/ S5 K! N! p1 Y6 _
(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!")
% S! _- ?+ J+ }) W6 }* z (exit)) . w# X# Y6 b4 t& _) N4 i8 s" G6 Z
)
7 k2 R3 k1 g% x' J: O6 p (setq oldos (getvar "osmode")). H% \- }3 q2 K# J' r' M9 W
(setvar "osmode" 0)- @ _# ]* }1 C/ n u3 ^
(setq x (car ppp))3 E. _! f) `- R7 v x& P
(setq y (cadr ppp))
% R5 ?5 T1 Y, v9 ~4 [) p* T (setq z (caddr ppp))1 y: H2 L8 V9 d# y" ]
(setq p01 (list (+ x a) (- y b) z) ;第四象限点+ P( j8 e0 v# [8 R$ s/ L
p02 (list (+ x a) (+ y b) z) ;第一象限点# @/ O) { w9 m1 V
p03 (list (- x a) (+ y b) z) ;第二象限点# G, P6 q: v2 y# m4 t& i( a
P04 (List (- x a) (- y b) z)) ;第三象限点4 o) U% _; p) ]: b( \% Z/ P" n& N
(command "rectang" p01 p03)) R' ?7 m& `8 r
(setq aa (atan (/ (- b r) h))) ;angle = Atn((b - d) / (2 * h))
0 K) Z* D& q0 M4 t' S! l: d; A (setq ang (R->D aa)) ;弧度转化为度+ s) R0 ]- O* u. p1 f7 u
(setq p12 (list (+ x a) y z))
" v+ v) ?. N8 L5 q! l$ F (setq p23 (list x (+ y b) z))
% m5 M$ y+ b) N (setq p34 (list (- x a) y z))
7 \+ p) A1 s( }2 S (setq p41 (list x (- y b) z))
5 I6 O9 q( n& n( w% A (command "extrude" (list (entlast) p23) "" h ang);;;;;;$ e q. {0 W* [8 z$ b. u0 D
(ssadd (entlast) ss);;;;;
8 ?2 e: ^! O- z0 X7 j (setq p1 (list (+ x r) y (+ z h)) ;+X点2 H" O- l4 ^! h. y+ k- Y2 A
p2 (list x (+ r y) (+ z h)) ;+Y点
* S v$ ]* V/ Q) }& X p3 (list (- x r) y (+ z h)) ;-X点! s+ l' J+ V z1 o& J+ A
p4 (list x (- y r) (+ z h))) ;-Y点
( y4 X9 v( U5 y1 O. _$ z (command "slice" (list (entlast) p23) "" p01 p02 p1 p03) ;;;;;; l( Q/ F1 O/ z. F5 n9 p4 I# e
(command "slice" (list (entlast) p23) "" p03 p04 p3 p01)
& ]$ h/ n+ g6 O6 O (command "slice" (list (entlast) p23) "" p01 p4 p1 p3)
5 E# h# j* Q, [; ?: ?& u* q (command "slice" (list (entlast) p23) "" p02 p1 p2 p4)% q' v1 G$ N0 S3 g; H
(command "slice" (list (entlast) p23) "" p03 p2 p3 p1)
) `7 Y, H0 u% U7 b; G (command "slice" (list (entlast) p23) "" p04 p3 p4 p2)! J, J7 {/ h( o( T8 h7 e, N' Y
(setq pt11 (+ x (* r (cos (atan (/ b a)))))
. I( x3 G6 e2 z9 N; V6 b pt12 (- y (* r (sin (atan (/ b a))))), ^( z6 a$ m q9 j _4 Z
pt13 (+ z h))
h( w' }$ T0 {- t N (setq pt1 (list pt11 pt12 pt13)) ;射线交点1
$ k& S6 l4 Z6 Y3 B' x" T2 a' | (setq pt21 (- x (* r (cos (atan (/ b a)))))
! Y! G' k M" } D/ D1 ?% f pt22 (+ y (* r (sin (atan (/ b a)))))7 [. [# b/ ~' O: M; |6 ? I- m
pt23 (+ z h))
" E5 G, ]; T' V! E2 r (setq pt2 (list pt21 pt22 pt23)) ;射线交点2& S0 `. P6 W4 Y4 [
(setq d01 (distance p01 pt1)" \, E9 A% x! P; a' y9 y
d02 (distance p01 pt2)# v3 T) e0 u4 }
d12 (distance pt1 pt2))/ b9 ? b; t x& r! K2 R4 S9 m
(setq c (/ d01 d02))5 p+ ]1 S8 `6 |1 {0 S8 \ A: |
(setq pt01 (/ (+ pt11 (* c pt21))(+ 1 c)))% s( m a1 H; Y, J2 A
(setq pt02 (/ (+ pt12 (* c pt22))(+ 1 c)))
; ]7 A" i* A" g (setq pt03 (+ z h))
3 j, ?- w' Y1 t1 J' S t) b" k' z (setq pt0 (list pt01 pt02 pt03)) ;椭圆锥圆心1 N3 x8 T2 S, R. W0 j$ R% H
(setq k (angle pt0 pt1))
9 L$ G5 q7 C! X& v. o (setq aa (sqrt (* (distance pt0 pt1) (distance pt0 pt2))))
R9 R. T0 ^% N4 @ (setq e (/ (- (+ (* d01 d01) (* d02 d02)) (* d12 d12))
4 K3 Z B2 l$ ~- `: l (* 2 d01 d02)))
/ v; S9 C, R4 s, G# ~6 g (setq ang1 (+ (atan (/ (- 0 e) (sqrt (- 1 (* e e))))) (* 2 (atan 1))))/ L# o/ k0 [5 Z3 \ B
(setq bb (/ (* (sin (/ ang1 2)) (distance p01 pt0)) (cos (/ ang1 2))))
; J6 `8 x' G4 n* f5 i (command "ucs" "za" pt0 p01)
; h5 M* e& ^7 T5 l( P, H (setq pp1 (list aa 0 0))
+ w) x' o4 U2 V: \3 I5 Z (setq pp2 (list (- 0 aa) 0 0))
: A# a* z( O- @$ X (setq pp3 (list 0 0 (distance pt0 p01)))
5 P" ~# M: W' a, y3 ~ (command "cone" "e" "c" "" pp1 bb "a" pp3)
y9 R% f0 W, U (command "ucs" "p")5 u' K" q2 G$ l% n+ L
(command "slice" "l" "" p1 p2 p3 p01)* V- M$ C% P: p; M
(setq ppp1 (list (+ x (/ r (sqrt 2)))(- y (/ r (sqrt 2)))(+ z h)))
7 P: ^9 V# E1 U8 L, V h, q (setq ppp2 (list (+ x (/ r (sqrt 2)))(+ x (/ r (sqrt 2)))(+ z h)))
+ x! S# f+ W; G ` (setq ppp3 (list (- x (/ r (sqrt 2)))(+ x (/ r (sqrt 2)))(+ z h)))3 c, l* d4 q" N
(setq ppp4 (list (- x (/ r (sqrt 2)))(- y (/ r (sqrt 2)))(+ z h))) @6 M2 X9 v$ r$ z
(command "slice" "l" "" p1 p4 p01 (list (+ x a) (- y b) (+ z h)))2 m/ ?; X% R+ H. J4 d$ k+ R
(ssadd (entlast) ss);;;;;;# I' d0 s5 }$ @1 d0 Y
(command "mirror" "l" "" p23 p41 "n")7 t% h; n ^, J9 S5 u p( T3 h
(ssadd (entlast) ss);;;;;; A8 A, s& ?/ s Q+ O
(command "mirror" "l" "" p12 p34 "n")5 y1 F; x/ H& V5 Y7 A4 f
(ssadd (entlast) ss);;;;;;* R7 O3 [# u* r' U$ ~; ~ D
(command "mirror" "l" "" p23 p41 "n")
* H+ W# ~( H) K3 }! g1 J (ssadd (entlast) ss);;;;;; o5 N4 K/ l0 g3 x1 X' |
(command "union" ss "")
6 X+ j& Q+ s. M# R7 }; V (setvar "osmode" oldos)
* A7 @) V& e6 S# |6 y (princ)
* B+ A& }' j! \$ G. p; n% T)
; n: _+ X C) s1 s- k4 K) `; x* Q(defun R->D (number)
z5 d( X+ A( b (* 180 (/ number pi))
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' S3 X* q4 ~" Z' X[ 本帖最后由 woaishuijia 于 2008-7-3 17:24 编辑 ] |
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楼主
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发表于 2008-7-2 17:13:25