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 H# b% ]+ g2 |1 F8 z) X4 m
这一辑是对话框，题材是三维，在三维中和二维有些差异。7 r7 x, @9 Z @
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：" V9 j/ e5 x |$ }& m/ ]- y# `
;;;简易3D法兰绘制
2 n: ~5 E2 { U5 M" |( `$ l7 H;;;使用时必先保证D盘的example文件夹里有flange.dcl和flange.sld
2 U9 j8 N) }2 t6 p! h3 j ~(defun c:flange (). b; P! l1 d1 N
(setq index (load_dialog "d:\\example\\flange.dcl"));加载对话框
- R% B1 O0 D& C) Z) P: g (if (< index 0) (exit))
* `8 `) u0 W. v* @6 _2 } (setq next 2)
: Y/ u% n# [5 {: b1 X (while (>= next 2)
& [( }6 L7 R/ ? x (if (not (new_dialog "flange" index));初始化对话框& E0 V: k+ Z2 l5 r1 ]% \; Q0 J
(exit)5 _7 v1 {9 b# d# d3 n
)
; O$ e8 u$ @+ G0 d) ^5 M4 Z (show "key_image" "d:\\example\\flange.sld")) g. H' G! P0 [1 x9 a$ x) `
(set_tile "key_D"(rtos 100 2 2));初始化控件, g1 r" ~1 [( Z0 j* m
(set_tile "key_M"(rtos 50 2 2))
4 `9 ~- U' N1 T; Q3 T8 e- u (set_tile "key_N"(rtos 25 2 2))
! ~! i# V; {) e4 R$ J (set_tile "key_H"(rtos 50 2 2))4 {- y9 |* v. C' J3 u$ A
(set_tile "key_T"(rtos 20 2 2)); S( ^# _9 g7 ~' y
(action_tile "accept" "(getdata) (done_dialog 1)" );accept动作
+ {$ }& Q0 p+ o a& \0 o (action_tile "cancel" "(done_dialog 0)" );cancel动作
; R9 ^8 f8 y0 ^' ]5 N+ V# { (setq next (start_dialog));显示对话框& D. d' I; z' u" Y- N
(cond( I/ J% X( [7 k5 ^/ h/ [+ v% M
((= next 1)$ n5 U0 f! D" w' c" O
(draw)
( \: {/ b& Q0 ]' G )
" \( X: `0 d h B: `: ~% U ((= next 0). _6 h; n4 X3 c# C4 ^7 u
(prompt "\n取消了法兰绘制")
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);cond3 \% |0 p1 u5 h4 E9 T/ m$ L
);while
" V5 A! C/ u7 m( S- o0 Z (unload_dialog index);卸载对话框4 ?& B, p# P1 b4 w# J
(princ)' A3 N6 x4 c$ q+ o" e/ Z, ^4 }0 l t
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;;draw
, E$ S; T8 ]* [/ {2 e(defun draw();/ 1p 2p p0 p1 p2 p3 p4 p5 s1 s2 s3)( g; Y9 c1 ]2 p- B1 z
(setvar "cmdecho" 0) `4 m% E( P! F! f: Y
(setvar "osmode" 0)
' }" j/ E } x- m$ H (setvar "isolines" 20)
' Z9 w( o. v$ d$ X1 q (command "ucs" "" "");在wcs中工作0 D n$ s p. N2 y5 `1 x8 t P7 _
(setq 1p '(0 0 0)
% w$ l) v# T7 s1 D3 z+ K7 K; Q 2P (list 0 h 0)
3 a9 @% h/ ]- q$ z p0 (polar 1p 0 (* 0.5 n))
6 C/ `" F8 L. b( c; G1 x p1 (polar 1p 0 (* 0.5 d))0 U* G- q+ a e/ l1 M, [, H
p2 (polar p1 (* 0.5 pi) th)
1 m( w8 ]& A1 p p3 (polar p2 pi (* 0.5 (- d m)))+ n2 [; m- l9 z
p5 (polar p0 (* 0.5 pi) h)' f( y4 \% p7 ?9 H
p4 (polar p5 0 (* 0.5 (- m n)))
: `' D2 t, R! `/ ~ 3p (polar 1p 0 (* 0.25 (+ d m)))
, t- [2 J; C: o% W! s2 L% L 4p (polar 3p (* 0.5 pi) th)4 e" c8 p, C( y2 A6 a7 ]" b
)
2 W" q& S2 x8 ` (command "pline" p0 p1 p2 p3 p4 p5 "c")
& h q/ I9 |9 ^6 R$ W0 Z (command "revolve" (entlast) "" "y" 360);(entlast)获取最后生成的图元
: c- D" I0 @# W% r; f( f3 n (setq s1 (entlast));做三维，常常需要把一些后面用到的对象保存起来
& d. D0 V: L# o2 n (command "ucs" "n" "x" "");ucs绕x轴旋转90度3 q- \$ L' O+ Z' F
(setq 2p (trans 2p 0 1));;点从wcs转到ucs，这是三维重点3 A7 n' W. [4 M: w
(setq 3p (trans 3p 0 1))
' S; x9 V/ ]4 F (setq 4p (trans 4p 0 1))
; U+ x. K8 B6 | (command "cylinder" 3p (* 0.0625 (- d m)) (- th)). F& I, n s: m4 W: i( p
(setq s2 (entlast))2 x- g$ m' \* ?- r6 Q+ I
(command "cylinder" 4p (* 0.125 (- d m)) (* 0.2 th))8 M/ p1 G8 G5 D. ?2 h* V
(command "union" s2 (entlast) "")5 U, m" C' Z+ l+ C! U) t
(setq s2 (entlast))
6 g1 a3 d- C5 Y; x% O (command "copy" s2 "" 3p (polar 1p (* 0.5 pi) (distance 1p 3p)))
* k+ l+ [4 `6 }; u5 {& m* h) { (setq s3 (entlast))0 s" T4 _$ J+ p* F% ?6 Q
(command "copy" s2 "" 3p (polar 1p pi (distance 1p 3p)))3 J' f G2 t* k( @
(setq s4 (entlast))
+ T4 V3 Y ~* j6 S (command "copy" s2 "" 3p (polar 1p (* 1.5 pi) (distance 1p 3p)))
+ h. i$ x( q- E9 m+ {+ r S (command "subtract" s1 "" s2 s3 s4 (entlast)""): e- F/ l5 ]* z0 `+ T
(command "VPOINT" '(1 1 1))% r; V' L* L6 }' d+ H
(command "shade")
r: Q; D) g" L8 O, r (command "zoom" "e")
* L+ J# r% D1 i. \- j% ]" e9 d (setvar "cmdecho" 1); f) B& e3 p* B9 j K7 b
(setvar "osmode" 4133)+ W/ \$ p+ B$ @ l- u
(princ)
' I, {5 u3 f4 P. Y$ i)
. h: S! h% Y3 Z& k T, ~;;show函数将file_name幻灯片显示到image_name控件中4 a1 C& y7 w# O0 c
(defun show(image_name file_name / x y)
+ @, J( r( P8 }9 ~7 Z (setq x (dimx_tile image_name));取得image的宽高
" b! B! r7 i3 D9 \& d7 S (setq y (dimy_tile image_name))$ K5 T: [+ N* W) E7 A* V
(start_image image_name);幻灯片处理开始& H2 [$ |( Z- i3 S
(slide_image -10 -25 x y file_name);幻灯片处理，(-10 -25)为左上角点
4 B5 p8 F$ W7 q: b) Q7 ] (end_image);幻灯片处理结束
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2 ~" y/ v- A6 Y" ^' [& g;;getdata获取编辑控件的值* m- ~% \. `' G, p" U$ [$ a
(defun getdata()
' C# m' o4 e5 U4 v+ E (setq d (atof (get_tile "key_D")))
. n) [4 {/ [- B# |6 D (setq m (atof (get_tile "key_M")))( R7 V" _2 l8 u1 x q
(setq n (atof (get_tile "key_N")))- H9 F; P' l% M9 s1 j1 E0 n
(setq h (atof (get_tile "key_H")))
0 {( |* E! a: R. x: Y0 Y. [ (setq th (atof (get_tile "key_T")))8 H8 M: D) G9 r8 w+ o# V' M4 C
) + w0 z8 \( O6 A* _' ?3 d
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0 x' R1 \( k7 T4 k9 h
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发表于 2008-10-30 15:39