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。$ P# j3 u8 s! f: u+ \ k
这一辑是对话框，题材是三维，在三维中和二维有些差异。# i' T( c$ R( e8 {; ?6 l- {
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：: N5 ]8 T2 d. N5 u1 U
. H8 }* \1 d% Q4 F下面还是来看程序代码吧：
& R8 `; I0 U# };;;简易3D法兰绘制
9 J2 Z5 o6 K1 G( n* O;;;使用时必先保证D盘的example文件夹里有flange.dcl和flange.sld
9 x* {* l, u) a T+ g, ^(defun c:flange ()
$ J8 @4 ~% N/ M2 M" n2 f Q (setq index (load_dialog "d:\\example\\flange.dcl"));加载对话框
8 [' m& I1 I' |) [; m9 T (if (< index 0) (exit))
1 K4 D5 S2 J- a$ h1 o8 w (setq next 2)8 h+ ~/ R( G# D) i8 |8 o
(while (>= next 2)
% A% l1 u {/ L! w- K (if (not (new_dialog "flange" index));初始化对话框
8 P4 T) [- A* q! g G# W- { (exit)! X) S% a& p( S8 V8 |3 V2 ]
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(show "key_image" "d:\\example\\flange.sld")
1 r6 S9 j( v6 [' J- ?* O (set_tile "key_D"(rtos 100 2 2));初始化控件
) g, Q, G$ B1 b7 E2 I (set_tile "key_M"(rtos 50 2 2)). H. C- }3 m: @/ ~, y7 `
(set_tile "key_N"(rtos 25 2 2))
0 O% T( x! o' |4 }( z6 ?; F (set_tile "key_H"(rtos 50 2 2))6 r, ~" m3 o. [8 W
(set_tile "key_T"(rtos 20 2 2))
8 {: x8 a7 g' x r: p; L+ `( E (action_tile "accept" "(getdata) (done_dialog 1)" );accept动作( g9 H1 Z3 T9 P4 e5 a( C! Q
(action_tile "cancel" "(done_dialog 0)" );cancel动作7 ]' m# {* H+ L2 i4 s
(setq next (start_dialog));显示对话框$ ]6 d: h8 [( \8 ]. p8 B
(cond
# k9 s) W% i4 b ((= next 1)7 m- l$ w5 p; N4 `) O
(draw)7 S5 B* |# v L1 o- J+ O7 n. f2 U
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((= next 0)5 A% Q& r+ m k3 O9 G( F& R
(prompt "\n取消了法兰绘制")
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);cond" G6 y, w- M0 p
);while
9 t4 @5 e+ A( [2 y (unload_dialog index);卸载对话框
( |' \$ _' Q$ T& ^ (princ)
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;;draw
8 ]# [( h$ q9 s7 Q(defun draw();/ 1p 2p p0 p1 p2 p3 p4 p5 s1 s2 s3)2 c' o( {& ?7 H6 k& G9 w
(setvar "cmdecho" 0)
7 j6 w9 ~' _+ q% r Y9 v5 r (setvar "osmode" 0)
) h; z S' [/ ]& M" ]% o( S (setvar "isolines" 20)& n L( N `: |5 X
(command "ucs" "" "");在wcs中工作; B/ M8 R4 [6 q0 H, [* D- P% X
(setq 1p '(0 0 0)* {5 K# V0 F3 \( ]
2P (list 0 h 0)
5 V* n( F; `$ C! h4 M' G0 N p0 (polar 1p 0 (* 0.5 n))
2 V( `4 A) p( m n. d; k9 j' U6 v p1 (polar 1p 0 (* 0.5 d))3 O8 ~$ X! l3 z3 v4 o
p2 (polar p1 (* 0.5 pi) th)
% m( \+ A3 @! M$ f' W p3 (polar p2 pi (* 0.5 (- d m)))
! [, c1 |8 r+ \" A, u2 G( t p5 (polar p0 (* 0.5 pi) h): J- D0 |5 o2 p) f0 y" N7 }
p4 (polar p5 0 (* 0.5 (- m n)))2 W& V# x, Z: ^
3p (polar 1p 0 (* 0.25 (+ d m)))
+ b/ ~ {+ v7 Z0 v1 \: v, j h 4p (polar 3p (* 0.5 pi) th)* a. B7 G& A" P! T: Z
)
5 ~1 p m2 k. { (command "pline" p0 p1 p2 p3 p4 p5 "c") S2 _. ?( E* z$ s7 j- l& z5 u
(command "revolve" (entlast) "" "y" 360);(entlast)获取最后生成的图元
* P X& N' ]: A2 j( ]4 l, R" y (setq s1 (entlast));做三维，常常需要把一些后面用到的对象保存起来
4 ~* R( V* ?6 l8 }* e (command "ucs" "n" "x" "");ucs绕x轴旋转90度
- b9 z6 v/ R4 l+ n9 ?, J# e' q (setq 2p (trans 2p 0 1));;点从wcs转到ucs，这是三维重点7 D1 w2 E9 I7 {+ b
(setq 3p (trans 3p 0 1))
5 D" t9 _* p- Q (setq 4p (trans 4p 0 1))4 F, j; _" h" U, \* V
(command "cylinder" 3p (* 0.0625 (- d m)) (- th))* G! y5 G9 @! S4 {6 h
(setq s2 (entlast))2 y; f/ b* V4 M8 @
(command "cylinder" 4p (* 0.125 (- d m)) (* 0.2 th)); T0 I- S& ^# _$ ], m" X
(command "union" s2 (entlast) "")
$ }' l6 g- ?; i6 [7 g3 Z- }( L5 Y (setq s2 (entlast))/ O9 ~- z7 _4 _- T% X1 J
(command "copy" s2 "" 3p (polar 1p (* 0.5 pi) (distance 1p 3p))); Y% |" D! |7 l8 M% j; \% C
(setq s3 (entlast))7 z$ }, d9 d; _ u+ t5 c, I. b7 c
(command "copy" s2 "" 3p (polar 1p pi (distance 1p 3p)))" ^4 F5 ~" }% H4 T$ Z
(setq s4 (entlast))
0 \* h; ]+ v2 v (command "copy" s2 "" 3p (polar 1p (* 1.5 pi) (distance 1p 3p)))" z1 e. Q$ \3 F. e5 i
(command "subtract" s1 "" s2 s3 s4 (entlast)""). y/ L9 ^ O1 q
(command "VPOINT" '(1 1 1))
+ f* K i% u3 D' q (command "shade")
" c' {( p8 S& X# {. m (command "zoom" "e")
: c, P4 x" |4 }: m$ p X1 x p& N (setvar "cmdecho" 1)
4 C# T* i: {% W. k/ Z3 Y& ?& [+ c (setvar "osmode" 4133)
% V( P+ Y$ t6 ?1 o T (princ)6 g0 L, w1 ?% Q$ s7 c9 P* ^+ O: T
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;;show函数将file_name幻灯片显示到image_name控件中
6 n4 P3 b- {9 B& g6 m3 U(defun show(image_name file_name / x y)4 g6 h: W0 @& f {- m- p8 c1 M
(setq x (dimx_tile image_name));取得image的宽高+ O9 k4 q' v- z2 F" Q( C: J
(setq y (dimy_tile image_name))
5 f6 x( F% q, n6 K) T, \- T8 N (start_image image_name);幻灯片处理开始
5 J! k/ a& m1 g% N' j# B6 g: s (slide_image -10 -25 x y file_name);幻灯片处理，(-10 -25)为左上角点 b8 Z; W/ s& n' }1 Y- {9 n
(end_image);幻灯片处理结束
& j4 a9 [" j! C) 7 ?% s$ m: _: Z! b& k- I8 E
;;getdata获取编辑控件的值. m$ T e9 c! |! _0 w+ M
(defun getdata()
# k S6 P3 M6 X! m; T/ @ (setq d (atof (get_tile "key_D")))
i3 U- y5 `8 l/ q (setq m (atof (get_tile "key_M")))
, `& h/ r3 D+ G- t$ ?& U (setq n (atof (get_tile "key_N")))
+ q* D+ C, X! O9 [% y% v (setq h (atof (get_tile "key_H")))
7 x6 ^+ |' Q. p0 A (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5 T! J" \! b, B; n
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发表于 2008-10-30 15:39