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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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8 r+ w# `' I7 D& @+ g(defun c:tydf (/ ppp a ab b r h x y z p01 p02 p03 p04 p1 p2 p3 p4 pt11 pt12 pt13. U$ B2 }" n) Y( N! s% a* E
pt21 pt22 pt23 pt0 pt1 k e c ang ang1 ppp1 ppp2 ppp3 ppp4 ss)
# b9 A* @3 h$ j* `2 V (setvar "cmdecho" 0)
1 |3 Z8 A+ S, c (alert "本程序已将UCS设为世界坐标系！")3 P) w$ N6 s2 c4 {! u3 F! D
(command "ucs" "w")
q( Z" c5 j& ?1 N& o$ ?7 i (setq ppp (getpoint "\n请输入地方的中心点"))
6 Y- Y# ~" r* I) H, r3 j$ l8 d) u (setq a (getdist ppp "\n请输入地方的半长度:"))! M! B7 h9 f$ ~, F. j7 o
(setq b (getdist ppp "\n请输入地方的半宽度:"))
, Q( y% Z1 m! ` ]6 F1 L/ R0 l (setq r (getdist ppp "\n请输入天圆的半径:"))
5 b I3 U( R8 D7 C' \( s (setq h (getdist ppp "\n请输入天圆地方的高度:"))3 K: j/ j% K! P; m6 B
(setq ss (ssadd));;;;; I1 t) J# F& Q
(if (< a b)
0 c# U! f/ }% U8 f5 l8 N7 b" k (progn& ^% j- @( Z, s; X# J" o
(setq ab b)
8 P8 A! C, f3 Y- u9 B% _ (setq b a)
& n6 n3 ~/ Z0 k$ e) v! A1 E (setq a ab)9 l9 g& D0 F. F2 p* a% z
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)
1 u8 c1 [, x+ _) r' v4 O (if (< b r)0 t4 w! K1 u$ ]4 `9 I/ f
(progn
$ M1 |3 H8 w/ s9 e2 o7 R$ g0 s8 { (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!")
. Q) t6 g0 v' M: \6 K (exit))
4 u4 P9 |+ Q2 c% N0 } )
# d9 O: L8 |4 t9 @' } (setq oldos (getvar "osmode"))* N3 S# Q w$ n6 v
(setvar "osmode" 0)
( [/ P- Y E' {$ A (setq x (car ppp))$ \9 R& l" L7 _( _) n7 P
(setq y (cadr ppp))
) y& `& z) s3 a, e4 @/ F3 ~1 L (setq z (caddr ppp))
& J' p3 y! O* \7 ^' W" R (setq p01 (list (+ x a) (- y b) z) ;第四象限点: K7 Z; e8 e7 n3 ]" t
p02 (list (+ x a) (+ y b) z) ;第一象限点
5 Y0 W+ K& q: K; S1 A* \, d: t( g p03 (list (- x a) (+ y b) z) ;第二象限点
) P! W" c$ m7 G P04 (List (- x a) (- y b) z)) ;第三象限点
: q( c4 L5 a6 ~. B6 h+ R (command "rectang" p01 p03)3 @' M$ f8 P2 f
(setq aa (atan (/ (- b r) h))) ;angle = Atn((b - d) / (2 * h))) o# F" p+ P. l% D6 q7 {6 P
(setq ang (R->D aa)) ;弧度转化为度: N- t- c# _0 F7 I% j3 |
(setq p12 (list (+ x a) y z))+ {+ ~& A3 `, ~7 g
(setq p23 (list x (+ y b) z))3 @: m9 l- R7 h- {8 K2 J4 h
(setq p34 (list (- x a) y z))
) c( a$ b! @+ d# q. {; f0 [% O. |" o (setq p41 (list x (- y b) z))
. @. u/ \$ ?$ s( k' m' S& @, u (command "extrude" (list (entlast) p23) "" h ang);;;;;;0 p, s E! F) r3 U
(ssadd (entlast) ss);;;;;* B, a& e _+ ~7 L* ] j" X
(setq p1 (list (+ x r) y (+ z h)) ;+X点
& L: L4 F* ?# c% ]- d9 A$ g& Q8 w p2 (list x (+ r y) (+ z h)) ;+Y点, ]4 _ M' r7 k5 Z3 `' @* ~& t0 m
p3 (list (- x r) y (+ z h)) ;-X点* J# y7 j% `% |, P' q
p4 (list x (- y r) (+ z h))) ;-Y点, W9 V$ l) O* c4 J2 Q4 n
(command "slice" (list (entlast) p23) "" p01 p02 p1 p03) ;;;;;) j r$ O* q" q
(command "slice" (list (entlast) p23) "" p03 p04 p3 p01)
, d. Z; s8 J/ j. {- G% u (command "slice" (list (entlast) p23) "" p01 p4 p1 p3)
+ N1 W, Z& |! N0 m" }; i7 L (command "slice" (list (entlast) p23) "" p02 p1 p2 p4)0 x( P8 Q O2 v: \# {8 f1 k
(command "slice" (list (entlast) p23) "" p03 p2 p3 p1)
- _7 @" b) e M! w (command "slice" (list (entlast) p23) "" p04 p3 p4 p2)
% d( g& a4 L9 _2 X$ B (setq pt11 (+ x (* r (cos (atan (/ b a)))))7 f/ }7 ~5 o3 [6 P
pt12 (- y (* r (sin (atan (/ b a)))))8 |; u7 G0 E4 R8 J
pt13 (+ z h))* ]$ I6 _1 z6 Q9 F# y S* Y$ Z8 J+ E
(setq pt1 (list pt11 pt12 pt13)) ;射线交点1' A' A; K' \2 Y; ?$ i' L8 v; w
(setq pt21 (- x (* r (cos (atan (/ b a)))))# r; Z7 h2 H% s" i ?
pt22 (+ y (* r (sin (atan (/ b a)))))
# k9 ?7 e# _' W& Z) V pt23 (+ z h))5 T: v, s( x0 u/ d! M! V# L4 ? A
(setq pt2 (list pt21 pt22 pt23)) ;射线交点2+ _5 v% M/ j/ S0 {4 c5 |
(setq d01 (distance p01 pt1)# C/ y D: p* k& T
d02 (distance p01 pt2)+ J( u- d! d9 v9 o
d12 (distance pt1 pt2))
1 u/ @- k2 C1 a8 v) Y (setq c (/ d01 d02))
4 y& Z$ F0 U2 {4 z: t6 [ (setq pt01 (/ (+ pt11 (* c pt21))(+ 1 c)))
5 F9 n- y. t; B5 W7 i (setq pt02 (/ (+ pt12 (* c pt22))(+ 1 c)))
5 U; v6 B, g' A7 } (setq pt03 (+ z h))' w# g% i8 R7 W) ~2 r" L+ R/ B: O
(setq pt0 (list pt01 pt02 pt03)) ;椭圆锥圆心- i. x U% [' R3 u* X' @
(setq k (angle pt0 pt1))2 u. N8 ^( k$ Z. H, X
(setq aa (sqrt (* (distance pt0 pt1) (distance pt0 pt2))))
: z0 S% S3 H1 K5 ]3 I (setq e (/ (- (+ (* d01 d01) (* d02 d02)) (* d12 d12))
" K3 d s! ?# q4 H, q+ h; i, z% J (* 2 d01 d02)))0 ^( O. Y$ g% K, i
(setq ang1 (+ (atan (/ (- 0 e) (sqrt (- 1 (* e e))))) (* 2 (atan 1))))* ]( O. h, g( ~1 R, u( c9 y
(setq bb (/ (* (sin (/ ang1 2)) (distance p01 pt0)) (cos (/ ang1 2))))
0 n( v9 Q' I- b' n# i (command "ucs" "za" pt0 p01)2 \& }+ F% L. ~ V
(setq pp1 (list aa 0 0))7 C2 g- R1 Z4 C9 D5 A* f" N
(setq pp2 (list (- 0 aa) 0 0))+ M& i+ V3 D( [6 g- I) N, Y
(setq pp3 (list 0 0 (distance pt0 p01)))
9 o% E- Y5 X- F4 D (command "cone" "e" "c" "" pp1 bb "a" pp3)
, ^4 X( w% J7 N0 z (command "ucs" "p")
2 t. Q" b6 j2 Y5 w5 ^2 L" Y (command "slice" "l" "" p1 p2 p3 p01)
& `' z/ e# v# y, |0 W (setq ppp1 (list (+ x (/ r (sqrt 2)))(- y (/ r (sqrt 2)))(+ z h)))
" x, X* C S8 V! _* z; ` (setq ppp2 (list (+ x (/ r (sqrt 2)))(+ x (/ r (sqrt 2)))(+ z h)))' `0 p: W/ ]0 x& c3 k7 d3 V# N
(setq ppp3 (list (- x (/ r (sqrt 2)))(+ x (/ r (sqrt 2)))(+ z h)))2 V! j! ]! F: O0 {8 @: n
(setq ppp4 (list (- x (/ r (sqrt 2)))(- y (/ r (sqrt 2)))(+ z h)))
, S- s6 ~0 \ Z( e3 f (command "slice" "l" "" p1 p4 p01 (list (+ x a) (- y b) (+ z h))): I1 k3 [8 T$ C7 e! F
(ssadd (entlast) ss);;;;;;
g v- x3 k- }1 p# ` (command "mirror" "l" "" p23 p41 "n") K3 l. I, `4 v) c2 t
(ssadd (entlast) ss);;;;;;
) a, W$ z9 l a. x0 l" F (command "mirror" "l" "" p12 p34 "n")$ K6 n% B5 ^/ g8 M g. ]; i
(ssadd (entlast) ss);;;;;;
% P6 m- I$ S/ p% I0 s r (command "mirror" "l" "" p23 p41 "n")
h; Z4 L' ^2 N! o) U/ L (ssadd (entlast) ss);;;;;
" I; {3 ^& S+ h (command "union" ss "")3 C/ T6 ]) e5 f V# E* Z) ~
(setvar "osmode" oldos)
6 a7 v% Z) k% s* Q: P/ l (princ) . w$ V# R* D. s7 Z7 O9 h
)" o+ M/ |, i1 T8 j* a2 n
(defun R->D (number)
9 {1 S6 l5 n( i7 y1 W/ p1 f5 E8 T (* 180 (/ number pi))
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3 ` W0 T% N& H' y- O2 c6 t6 t; V9 Z2 s
[ 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