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。' i' R1 B' {9 ]+ D- j: j8 o; L7 i
这一辑是对话框，题材是三维，在三维中和二维有些差异。
4 o) ]% {9 S/ Y, H/ `0 i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：, ~9 s) h/ C6 |. g% K9 O4 i
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下面还是来看程序代码吧：* G b; c7 ?# U- Z3 g1 y
;;;简易3D法兰绘制/ k, Y6 c' f: u4 Z- X9 @; C
;;;使用时必先保证D盘的example文件夹里有flange.dcl和flange.sld
5 K- B0 A1 K/ u* j, x6 K1 \8 |% X(defun c:flange ()0 p! w8 y" X7 ?* e1 F2 \
(setq index (load_dialog "d:\\example\\flange.dcl"));加载对话框7 _1 y! \4 [/ T: [& w( l+ K
(if (< index 0) (exit))
6 l6 H7 }; f/ N6 E* b0 b: r0 `6 M (setq next 2)# @0 P6 G. k8 k4 V
(while (>= next 2)+ |$ P5 m/ Z; o1 j5 q* U& G
(if (not (new_dialog "flange" index));初始化对话框
' b& J1 _ _# V# @5 P (exit)
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(show "key_image" "d:\\example\\flange.sld")
9 O+ E* G5 P7 T; e) p( c (set_tile "key_D"(rtos 100 2 2));初始化控件( v q J6 I4 a5 l, h
(set_tile "key_M"(rtos 50 2 2))& E+ F4 I n) ?+ Y8 d
(set_tile "key_N"(rtos 25 2 2))3 H) l. `; S6 M/ D$ e1 X
(set_tile "key_H"(rtos 50 2 2))
5 F9 ^/ v5 C$ N3 t1 |4 R6 @ e! I (set_tile "key_T"(rtos 20 2 2))
% {) J, T1 ~% _9 i9 @1 k4 k (action_tile "accept" "(getdata) (done_dialog 1)" );accept动作 {5 A. G A, Q4 z! a& Z: i' }
(action_tile "cancel" "(done_dialog 0)" );cancel动作. E/ D f3 m" B) p
(setq next (start_dialog));显示对话框
# F1 \& [+ F+ U9 _9 d (cond
" O- ?: E9 i+ i ((= next 1)5 D8 L$ @1 b, k6 b" {* m, N
(draw)0 x. f' [, a. F1 g5 ]7 L
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((= next 0)& {3 y" M1 l: v6 j
(prompt "\n取消了法兰绘制")
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);cond
8 Z; c0 ]: G! Y- k6 I, Z# o/ w );while
- E2 I }8 Z+ N* T- e* c2 Y2 a' R (unload_dialog index);卸载对话框4 [: H1 U# }& H6 R j! J
(princ)
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# m5 S2 g0 I* `/ z" V;;draw1 H2 C$ n8 q7 p
(defun draw();/ 1p 2p p0 p1 p2 p3 p4 p5 s1 s2 s3)& d& Y+ M! d& ^
(setvar "cmdecho" 0)
; l# V! K- r" n. p3 ? (setvar "osmode" 0)
# {, d+ ]8 b" p$ J9 T2 t (setvar "isolines" 20)6 M, |! |& _: d5 j4 ^5 U( M
(command "ucs" "" "");在wcs中工作4 }5 Q4 v% O# t+ ^9 L% N
(setq 1p '(0 0 0)2 R" ~6 C; y! `; p) W
2P (list 0 h 0)
1 \/ {* f8 v0 q' M# w. G- I p0 (polar 1p 0 (* 0.5 n))
8 `. |/ \5 W9 P6 n p1 (polar 1p 0 (* 0.5 d))6 A7 c# s% I, V; Q3 {
p2 (polar p1 (* 0.5 pi) th)
( {/ n1 J6 u! _0 g3 w+ z p3 (polar p2 pi (* 0.5 (- d m)))% {' O. i( G$ w) @9 `# F
p5 (polar p0 (* 0.5 pi) h)
6 t8 q$ s: K0 A( Z; Y p4 (polar p5 0 (* 0.5 (- m n)))! ~2 ^4 a3 r+ O; f' O$ C
3p (polar 1p 0 (* 0.25 (+ d m)))9 \- Z1 Q9 I. {7 C/ Y+ f
4p (polar 3p (* 0.5 pi) th)2 j& \2 A* B$ e; _4 i( R. x
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(command "pline" p0 p1 p2 p3 p4 p5 "c")
" _7 N* I2 g3 {: N2 V% \5 G (command "revolve" (entlast) "" "y" 360);(entlast)获取最后生成的图元1 c# ^0 n8 n9 S; v( u7 ]
(setq s1 (entlast));做三维，常常需要把一些后面用到的对象保存起来5 o) m& P) d& g
(command "ucs" "n" "x" "");ucs绕x轴旋转90度, a: v( o0 ~7 R( O
(setq 2p (trans 2p 0 1));;点从wcs转到ucs，这是三维重点; P, T( c+ d5 V
(setq 3p (trans 3p 0 1))
$ }* y' e& n; z% h9 d6 @ (setq 4p (trans 4p 0 1))
# e% ^( |9 E2 S4 J: p. n (command "cylinder" 3p (* 0.0625 (- d m)) (- th))
7 }2 y6 O) H9 x& \4 u a (setq s2 (entlast))
) h5 Z) s; T" a$ E: M8 Z (command "cylinder" 4p (* 0.125 (- d m)) (* 0.2 th))" D# A K) q; P4 n3 G" _. ?
(command "union" s2 (entlast) "")
# M" F v) G( x s (setq s2 (entlast))" j7 z; u6 w( g7 t u
(command "copy" s2 "" 3p (polar 1p (* 0.5 pi) (distance 1p 3p)))5 {. c% R- P F/ n6 R
(setq s3 (entlast))
" u P) M7 `; t: ` (command "copy" s2 "" 3p (polar 1p pi (distance 1p 3p)))6 g3 o6 h3 C; Z$ @* j% b, y
(setq s4 (entlast))5 z5 E5 d! U# c5 q" A" I+ j7 d
(command "copy" s2 "" 3p (polar 1p (* 1.5 pi) (distance 1p 3p)))
) \) j5 K6 N7 M* N (command "subtract" s1 "" s2 s3 s4 (entlast)"")- B1 N. l5 w# o. b2 [
(command "VPOINT" '(1 1 1))
" n/ N3 X; Z4 c( F* N (command "shade")
) s7 a. q9 U+ I (command "zoom" "e")$ E4 u" {! U2 c
(setvar "cmdecho" 1)5 G- F1 P5 \- E: u# N) l0 Q8 a
(setvar "osmode" 4133)
9 Y4 U2 Y5 e; y (princ)5 }5 Q: u. K! H: i
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;;show函数将file_name幻灯片显示到image_name控件中
* z; K" D& M2 [2 Z ~" \% q8 H5 y(defun show(image_name file_name / x y)
+ o% v" M% t. G+ t2 E# b* K (setq x (dimx_tile image_name));取得image的宽高
4 h: v" T2 I& j+ Y (setq y (dimy_tile image_name))
( n$ o0 a5 O. N, g: } (start_image image_name);幻灯片处理开始
5 M9 U! f# R5 v! {/ Q3 N& N! ?2 M (slide_image -10 -25 x y file_name);幻灯片处理，(-10 -25)为左上角点
5 D8 w0 |, e: k, A* g3 c (end_image);幻灯片处理结束
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;;getdata获取编辑控件的值
; A4 J3 N7 \6 d* U$ A(defun getdata()- p, Y* G' B6 p/ G
(setq d (atof (get_tile "key_D")))
# w0 V# j/ f! Y9 J, N7 e (setq m (atof (get_tile "key_M")))
( ^8 X7 A$ e& I0 h6 D (setq n (atof (get_tile "key_N")))
! ~9 N' w3 |# X (setq h (atof (get_tile "key_H")))
" s8 M* [( E' y" P; G. r (setq th (atof (get_tile "key_T")))* h8 L# q; K+ R4 N
)
' l; u# N4 d) a, W: A; y6 Q- w$ B' ]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& a! c" h1 J) ]2 E' G U( E' M
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发表于 2008-10-30 15:39