到这一辑为止，我就把LISP编程的各种技术向大家展示了一遍，如果自己下去琢磨，一到七辑都能看懂，也能自己编写出一些小程序，我就很高兴了。6 j, d& k3 W) A0 A
这一辑是对话框，题材是三维，在三维中和二维有些差异。
, G* o `! k) Z' ]7 A对话框大家都熟悉，是VB的强项，LISP和C++是通过驱动DCL语言定义的对话框文件来实现的，Auto里有base.dcl和acad.dcl，事先都定义好了，稍改一下属性，按需组合各控件就能做出来，善于模仿的人并不觉得它难，而关键是如何来驱动对话框，这就需要掌握对话框操作函数，下面的流程对理解对话框很重要：
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下面还是来看程序代码吧：; o" F$ Q6 }" v) D
;;;简易3D法兰绘制
1 j% ~# [" T) r! l; Z;;;使用时必先保证D盘的example文件夹里有flange.dcl和flange.sld
$ O% m7 a9 Y- G9 _, T/ I7 f(defun c:flange (), i& h" f S. b
(setq index (load_dialog "d:\\example\\flange.dcl"));加载对话框* v. u. X' ?: t. A
(if (< index 0) (exit))
) ?' k8 R3 g- X. \3 y/ Q& ] (setq next 2)# ?1 T8 u' S% N+ n5 I
(while (>= next 2)
D6 y1 J0 E# e1 g/ Y7 D; ` (if (not (new_dialog "flange" index));初始化对话框6 f- P" w; q% d9 F
(exit)
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0 h. }! y0 v" g" l, A# Z (show "key_image" "d:\\example\\flange.sld")
7 n Z- y6 P1 c3 P m( R# s3 W7 ? (set_tile "key_D"(rtos 100 2 2));初始化控件
. T0 S% P: h) l& w1 m5 Q' M (set_tile "key_M"(rtos 50 2 2))$ [6 X8 I' [" f8 u& G. l
(set_tile "key_N"(rtos 25 2 2))6 L$ k4 @; N' v8 c; e8 @
(set_tile "key_H"(rtos 50 2 2))
$ H: W+ Y! j( [* _2 ` (set_tile "key_T"(rtos 20 2 2))
+ P3 C3 i% [' Y7 k) Y6 x (action_tile "accept" "(getdata) (done_dialog 1)" );accept动作
5 [; d$ V) l1 d9 s" ]* m# d (action_tile "cancel" "(done_dialog 0)" );cancel动作8 x4 u2 ^# C' I$ |; x
(setq next (start_dialog));显示对话框
g7 t! ]5 b' Q7 x+ f (cond$ s+ L1 R, D5 E" M) b _9 P) `* d, W
((= next 1)' y# G- z5 Z5 _8 Z- D8 E& |# P/ K2 F
(draw)& I3 D' e# e& D3 `2 c
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((= next 0)
/ ` @- K+ s% h: K9 @- O (prompt "\n取消了法兰绘制")9 y: Z5 {* n5 ?; T
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);cond3 J+ x; k0 w7 Z8 A
);while# a& v0 V! R. _0 e, t
(unload_dialog index);卸载对话框4 ^) c; a/ l: E, B
(princ)
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;;draw$ P6 \" T. Y [( W
(defun draw();/ 1p 2p p0 p1 p2 p3 p4 p5 s1 s2 s3)
; ?' t* R% z* G8 @1 y2 v7 L (setvar "cmdecho" 0)
9 {7 h" R& p3 O0 v (setvar "osmode" 0)
3 }& N9 f( y; ]( g7 {* F8 } (setvar "isolines" 20)
% @8 h2 ?4 D5 |: R/ U (command "ucs" "" "");在wcs中工作5 z6 r3 E9 R4 k4 T$ G0 ?) [) C
(setq 1p '(0 0 0)
* M' i# m& F7 q- x. M0 {- j 2P (list 0 h 0)- ?# P, i. i+ z- v" m( P
p0 (polar 1p 0 (* 0.5 n))) q: o7 k2 c: B8 M7 ~: |5 L
p1 (polar 1p 0 (* 0.5 d))
1 E. a3 N- \0 L8 E p2 (polar p1 (* 0.5 pi) th)
, s6 F: e, x4 N5 M2 g p3 (polar p2 pi (* 0.5 (- d m)))
, N) I7 z/ z1 |. P1 k* q p5 (polar p0 (* 0.5 pi) h)
' L: e! v! d8 l* a7 {- J p4 (polar p5 0 (* 0.5 (- m n)))' R; K( \9 S! \8 ^6 G( r# @$ d
3p (polar 1p 0 (* 0.25 (+ d m)))7 y; c V# E8 \" U2 t9 j
4p (polar 3p (* 0.5 pi) th)
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(command "pline" p0 p1 p2 p3 p4 p5 "c")
5 r i* s* V5 M, z" V9 K& c. W3 g (command "revolve" (entlast) "" "y" 360);(entlast)获取最后生成的图元
1 X" i, _; d1 X( z6 _ (setq s1 (entlast));做三维，常常需要把一些后面用到的对象保存起来
* @/ L0 `! Z: s, ^3 t. c (command "ucs" "n" "x" "");ucs绕x轴旋转90度
$ T' g+ O# S% f (setq 2p (trans 2p 0 1));;点从wcs转到ucs，这是三维重点
/ n: P! b# |# _ k7 M3 R (setq 3p (trans 3p 0 1))
9 ?" S7 R3 @/ h1 N+ B (setq 4p (trans 4p 0 1))$ N% N& e( o. X$ ~% h, G
(command "cylinder" 3p (* 0.0625 (- d m)) (- th))5 l$ }4 {( o# s" z5 S* F* ]
(setq s2 (entlast))
8 C; }. j" i7 W2 l6 l+ \/ h (command "cylinder" 4p (* 0.125 (- d m)) (* 0.2 th))0 ] I. M6 O* t
(command "union" s2 (entlast) "")& D* S) n, W8 C) H6 d! N) e3 ^9 J
(setq s2 (entlast))
9 h: d0 g) O$ m( R (command "copy" s2 "" 3p (polar 1p (* 0.5 pi) (distance 1p 3p)))
. j$ b: u8 b6 j$ s: X! I (setq s3 (entlast)). A; z4 {$ Y- O8 l6 X% s M
(command "copy" s2 "" 3p (polar 1p pi (distance 1p 3p)))2 y: ?: w2 b) G0 z0 z/ Q
(setq s4 (entlast)). D% ~1 b/ J" ^2 V/ U
(command "copy" s2 "" 3p (polar 1p (* 1.5 pi) (distance 1p 3p)))
/ o0 R& g) q2 A' G# H. q, ` (command "subtract" s1 "" s2 s3 s4 (entlast)"")
! A1 N) @9 Y, n8 j/ J: S. Z (command "VPOINT" '(1 1 1))& ^( V7 d3 {1 w+ |% E
(command "shade")* B Q3 [' K' ~; ?# _$ v- z
(command "zoom" "e")
' e F0 T& a2 L/ Y5 L, l# a (setvar "cmdecho" 1)" v% q' T9 }2 @- }! f
(setvar "osmode" 4133)' I; D4 q3 |! W1 M( x9 u
(princ)
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;;show函数将file_name幻灯片显示到image_name控件中
; X# s8 ?7 z# [(defun show(image_name file_name / x y)
4 V' m6 ^, E5 R' n% a (setq x (dimx_tile image_name));取得image的宽高2 E/ C. p* W% g' D5 n
(setq y (dimy_tile image_name))+ d3 G W( [- X: [
(start_image image_name);幻灯片处理开始
- V9 J6 w- W* U: D( Q (slide_image -10 -25 x y file_name);幻灯片处理，(-10 -25)为左上角点
9 I8 Q' n: W+ t (end_image);幻灯片处理结束1 n/ L$ a( k$ y$ [ q6 t+ q0 ]% P6 Y
)
" f& R' X9 e; K$ N; A7 F8 u# Q. J;;getdata获取编辑控件的值
. H( I7 K( P1 g2 a! p( @* W(defun getdata()
4 W9 O) a, N. U (setq d (atof (get_tile "key_D")))' h% ^5 g- ~. c+ t, Q
(setq m (atof (get_tile "key_M"))) |2 T/ h$ Y7 ?+ t
(setq n (atof (get_tile "key_N")))/ C* H1 m& X C7 M, o
(setq h (atof (get_tile "key_H")))
7 A% z% m3 L/ W6 G (setq th (atof (get_tile "key_T")))
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使用该程序时要有example文件夹，放在D盘根目录下，附在下面压缩包里; M& Y$ C: g8 ?+ l
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发表于 2008-10-30 15:39