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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。" [3 i* u- m: ]8 O, c0 A/ C
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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
. o z% B! }: D" V, [9 ?' o4 z pt21 pt22 pt23 pt0 pt1 k e c ang ang1 ppp1 ppp2 ppp3 ppp4 ss)1 `/ B2 _* O: |" b( n, I' ~
(setvar "cmdecho" 0)& E) g5 a( p8 L% H- u- K- E
(alert "本程序已将UCS设为世界坐标系！")# \% h1 @% Z1 {: \% A
(command "ucs" "w")
6 T! Q9 Y2 s5 y0 O$ M, k (setq ppp (getpoint "\n请输入地方的中心点"))* ^; e$ v- f* q* `
(setq a (getdist ppp "\n请输入地方的半长度:"))- T3 Q9 Y8 |3 B9 v, Z/ h: I
(setq b (getdist ppp "\n请输入地方的半宽度:"))/ {7 Q) E4 D1 H8 }
(setq r (getdist ppp "\n请输入天圆的半径:"))" q; Y. X7 K9 R9 I9 o5 y2 h: Y. l2 p
(setq h (getdist ppp "\n请输入天圆地方的高度:"))
! F ^6 f* X& G B! r) L (setq ss (ssadd));;;;;
% @" E( G" Q1 p( h (if (< a b)
% [- a" |1 V! A, Q& q (progn5 |8 T( h$ |0 F9 y0 t; v. c+ ~
(setq ab b)/ Y- P4 d1 L0 V' @1 L
(setq b a)
( i* k0 A9 z3 a, V/ B# ^ (setq a ab)7 {% r! I# o: V, C
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)
; P3 D5 W0 S0 Z! [+ c. N (if (< b r)1 ^4 g" T; C3 C q
(progn
( f& A# O& @5 O9 L4 V6 S3 \1 [ (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!")
6 |8 ~2 z# b% }* o (exit)) & P) U- z/ b5 r$ D) b* y3 A
)
; Y3 d' L. t& D3 Z (setq oldos (getvar "osmode"))
+ c7 ?% d( c; V: X) W( ? (setvar "osmode" 0)1 |6 N/ J. _2 B' {4 l, S
(setq x (car ppp))5 a' p! ^, {; L7 ?, e* F
(setq y (cadr ppp))
3 A) \$ {" R* ^6 _4 v (setq z (caddr ppp))
3 X, M6 W6 S. o) D! d2 h (setq p01 (list (+ x a) (- y b) z) ;第四象限点+ i% k0 l0 Z6 B' B) Q7 I
p02 (list (+ x a) (+ y b) z) ;第一象限点
! t. i: _ I: b7 v p03 (list (- x a) (+ y b) z) ;第二象限点# w. j$ e5 `2 k
P04 (List (- x a) (- y b) z)) ;第三象限点3 i: s$ B. x% W5 C% A
(command "rectang" p01 p03)
/ i3 b) `, w8 w0 \5 j r6 b (setq aa (atan (/ (- b r) h))) ;angle = Atn((b - d) / (2 * h))* Q3 c! \: W# F& w% V: j- d1 ]
(setq ang (R->D aa)) ;弧度转化为度
3 X$ z& Y& I5 ^2 j4 [ (setq p12 (list (+ x a) y z))
) w+ s- K+ J/ w (setq p23 (list x (+ y b) z))
0 m% U* ~" d. }" M7 i (setq p34 (list (- x a) y z))
v# Z6 I7 S5 D$ ]& A (setq p41 (list x (- y b) z))
& z/ A+ x5 \; F" A v* z (command "extrude" (list (entlast) p23) "" h ang);;;;;;6 z# `* U- |& p" K7 Z7 B
(ssadd (entlast) ss);;;;;
# i+ ?* ?- P* V (setq p1 (list (+ x r) y (+ z h)) ;+X点" E: n& `: N( u* O2 g( p. X2 \
p2 (list x (+ r y) (+ z h)) ;+Y点8 V2 G! L& q& h5 Y* U
p3 (list (- x r) y (+ z h)) ;-X点' l. J& p0 `9 { p
p4 (list x (- y r) (+ z h))) ;-Y点
* ]0 t+ K, o% H" g( h" H (command "slice" (list (entlast) p23) "" p01 p02 p1 p03) ;;;;;% K3 h/ |) p! Y; D, _
(command "slice" (list (entlast) p23) "" p03 p04 p3 p01) F- F0 n! _8 x' `( W9 n, l. q
(command "slice" (list (entlast) p23) "" p01 p4 p1 p3): n9 g9 G: L" x2 E. f
(command "slice" (list (entlast) p23) "" p02 p1 p2 p4)
/ N S+ G- ?+ L; D' W1 _, R' v (command "slice" (list (entlast) p23) "" p03 p2 p3 p1), V- f5 O0 E6 b
(command "slice" (list (entlast) p23) "" p04 p3 p4 p2)
& e1 O2 \. S9 j- k (setq pt11 (+ x (* r (cos (atan (/ b a)))))
7 b/ n4 ?4 o C7 u pt12 (- y (* r (sin (atan (/ b a)))))/ e7 q8 _, R/ }& P' a1 o
pt13 (+ z h))
* s, T4 {" Y: j) o% t. U9 O2 }, S (setq pt1 (list pt11 pt12 pt13)) ;射线交点1/ _, Z8 t: z/ Y0 t
(setq pt21 (- x (* r (cos (atan (/ b a)))))
$ b# m5 r Q2 r/ K$ m) E% C; D pt22 (+ y (* r (sin (atan (/ b a)))))
" S, x* O, g( f) J' T/ e* L pt23 (+ z h))
/ b5 Z* a* H! H1 ` (setq pt2 (list pt21 pt22 pt23)) ;射线交点2 [; t: q+ Y0 Y9 N
(setq d01 (distance p01 pt1)9 ?/ U3 i3 Z8 I/ |8 j% ^6 U
d02 (distance p01 pt2)4 c% z) l: }# }2 H% [% e1 J( w
d12 (distance pt1 pt2))
! ^: \. D7 U/ w# H9 U- C (setq c (/ d01 d02))
7 y* }& n8 l# {# @/ G$ a (setq pt01 (/ (+ pt11 (* c pt21))(+ 1 c))). N! @& N5 D- J% U2 p7 U' t( ~0 N
(setq pt02 (/ (+ pt12 (* c pt22))(+ 1 c)))0 t6 P8 f* a# ^4 D* L) A3 ]. {: g5 z
(setq pt03 (+ z h))
: l% ^. H2 \& a' t6 [ (setq pt0 (list pt01 pt02 pt03)) ;椭圆锥圆心0 ~( n# M' S$ R1 I! ~+ q' e0 N7 X
(setq k (angle pt0 pt1))" ]5 a( c% O1 R
(setq aa (sqrt (* (distance pt0 pt1) (distance pt0 pt2))))
- N6 e' _. V u (setq e (/ (- (+ (* d01 d01) (* d02 d02)) (* d12 d12))" `9 I& |0 Y; G* _& c
(* 2 d01 d02)))1 u4 j+ s! _9 o3 r' Y
(setq ang1 (+ (atan (/ (- 0 e) (sqrt (- 1 (* e e))))) (* 2 (atan 1))))9 \" y, K) y# k A5 r- \
(setq bb (/ (* (sin (/ ang1 2)) (distance p01 pt0)) (cos (/ ang1 2))))' h! @) L. _$ [& l* m+ _ D# O; \8 u
(command "ucs" "za" pt0 p01)
/ c4 T' O( z+ Q J0 c2 Y* D (setq pp1 (list aa 0 0))& y0 h1 B$ W) m4 R+ B% I' p1 Z
(setq pp2 (list (- 0 aa) 0 0))* X8 P2 c9 {! }9 e
(setq pp3 (list 0 0 (distance pt0 p01)))- y, J. Z% \ C3 s- ~& }5 G q0 p
(command "cone" "e" "c" "" pp1 bb "a" pp3); A) V: s9 k) e7 f2 }( P. L
(command "ucs" "p")
; |" ?4 g6 ]) [1 P0 B5 t: W (command "slice" "l" "" p1 p2 p3 p01)+ D- e0 [7 O, @# U2 ^' Z+ @
(setq ppp1 (list (+ x (/ r (sqrt 2)))(- y (/ r (sqrt 2)))(+ z h)))
! J- {* P! j& E9 j1 W (setq ppp2 (list (+ x (/ r (sqrt 2)))(+ x (/ r (sqrt 2)))(+ z h)))! I8 W( b2 L0 F5 O2 k5 ^1 A
(setq ppp3 (list (- x (/ r (sqrt 2)))(+ x (/ r (sqrt 2)))(+ z h)))4 I0 L/ g# T: f9 s$ u
(setq ppp4 (list (- x (/ r (sqrt 2)))(- y (/ r (sqrt 2)))(+ z h)))
* G# T4 z) b1 j (command "slice" "l" "" p1 p4 p01 (list (+ x a) (- y b) (+ z h)))" e8 L5 H' H3 _! O: H, o
(ssadd (entlast) ss);;;;;;7 c7 T _# N/ A& u$ _$ |' Q# W5 \6 M
(command "mirror" "l" "" p23 p41 "n"); V7 g2 s: x; e- Z. F' F0 g: f( t
(ssadd (entlast) ss);;;;;;$ o& Y, l" m" a* n6 Y: @6 F
(command "mirror" "l" "" p12 p34 "n")
3 Y5 r' T4 Z/ ?, j+ o: }) Y: Z (ssadd (entlast) ss);;;;;;/ J/ R N, Y* g% ` ?' I% O
(command "mirror" "l" "" p23 p41 "n")
* S4 ?" K! R: f. X6 @' V (ssadd (entlast) ss);;;;;( X% n$ e% X$ B6 E! S
(command "union" ss "") E6 \; C! z$ Z' b+ k
(setvar "osmode" oldos)
/ z( H, ^* o# ? G8 e# C' P (princ)
8 `; z6 L; L' R7 h# m, ?& ~ q)
2 a$ j* J& C. \. z! o$ Z1 g(defun R->D (number)
- i9 A$ g4 w/ \/ c (* 180 (/ number pi))6 r9 @; } W* ]3 I+ x- o4 k% H
)
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[ 本帖最后由 woaishuijia 于 2008-7-3 17:24 编辑 ] |
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楼主
发表于 2008-7-2 17:13:25