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。
5 \' }. p$ ~ o这一辑是对话框，题材是三维，在三维中和二维有些差异。) i7 P7 ?: V7 f( r. R, }* F; q! u
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：
$ x( t' B9 a/ H( g0 r;;;简易3D法兰绘制- P) S" a5 D, q' K1 u' g/ d
;;;使用时必先保证D盘的example文件夹里有flange.dcl和flange.sld- T3 Y9 Y# o1 D
(defun c:flange ()$ z8 U1 ?2 ^$ g, y8 X1 X- ]* q w0 B4 [
(setq index (load_dialog "d:\\example\\flange.dcl"));加载对话框( x; H2 C* m; U, w
(if (< index 0) (exit)). Y6 s. c1 e3 N
(setq next 2); J) H8 u0 ]1 d
(while (>= next 2)
9 y. R) ?: w3 Z l% q9 b/ o (if (not (new_dialog "flange" index));初始化对话框
4 F" r& m& R* A (exit), E: Z" r; j' K |$ d- l- u
)+ V, ~( z+ A) V0 e9 W* \0 A; X
(show "key_image" "d:\\example\\flange.sld")* j9 F. l$ D$ B8 n {
(set_tile "key_D"(rtos 100 2 2));初始化控件
& V" D6 U) Q# D0 i6 l; @8 s7 Z (set_tile "key_M"(rtos 50 2 2))
, _6 o% t7 V5 c8 A; F. F2 F (set_tile "key_N"(rtos 25 2 2))/ ` R! ]9 m: P8 c5 n9 o. Z
(set_tile "key_H"(rtos 50 2 2))
' [; x$ o, l; f% c" [8 s (set_tile "key_T"(rtos 20 2 2))) d! P0 x% \# m! Y6 A% R
(action_tile "accept" "(getdata) (done_dialog 1)" );accept动作4 _7 U2 x$ V8 b+ K7 `. f q; G
(action_tile "cancel" "(done_dialog 0)" );cancel动作+ |: ^3 l5 I6 N. H$ O, [
(setq next (start_dialog));显示对话框8 R( n; ~: Q& y
(cond
) F# R: X: A$ i+ `1 M ((= next 1)
6 j4 m1 Y3 ]6 e (draw)
9 k- s8 R# J% T9 s )
- y+ Q) H% {2 w2 K ((= next 0)
9 \/ ~. U6 b/ a' p7 t- { (prompt "\n取消了法兰绘制"). y. Y, T4 u: _
)& P( a3 K& g8 p
);cond: e# C4 [' q! d( s. R2 T \, m6 ^
);while1 h$ U2 I; ]1 p& C
(unload_dialog index);卸载对话框
, P. j+ |( k! `' ^+ D (princ)9 Y. H' R) C- {9 y2 v6 {" h6 F% K% |
)
- t$ P- T" H j) E% G6 E1 M4 \4 P. W;;draw, G* p- F2 ^; t0 P% H2 H- [( I
(defun draw();/ 1p 2p p0 p1 p2 p3 p4 p5 s1 s2 s3)) {6 b& c4 X. }5 }2 ]
(setvar "cmdecho" 0)
0 Y: ^9 Y1 l' a2 [7 v (setvar "osmode" 0)
) j8 o( a- E9 s7 E* b( u' z (setvar "isolines" 20)
3 k: B! Q- b+ W9 m2 f (command "ucs" "" "");在wcs中工作
1 v7 Y; n; m( b% }0 y- a (setq 1p '(0 0 0)
8 A* E4 s! C7 `# Q; K 2P (list 0 h 0)/ H( j% F7 H5 A" M' u
p0 (polar 1p 0 (* 0.5 n))9 `. M- O" N7 S7 u# f$ U
p1 (polar 1p 0 (* 0.5 d))
u, D3 d! ~- \6 u* L3 `) K7 i p2 (polar p1 (* 0.5 pi) th)
( K& H9 ^# f, X% C* G p3 (polar p2 pi (* 0.5 (- d m)))+ f3 v1 k% T( b" t4 v+ W% V e
p5 (polar p0 (* 0.5 pi) h)
# |9 b9 l( C' u1 E. ^ p4 (polar p5 0 (* 0.5 (- m n)))/ `! v' Q9 e* m3 w# K
3p (polar 1p 0 (* 0.25 (+ d m)))
: ~: a, q) O; ~& S; q( h2 @, [2 S; B 4p (polar 3p (* 0.5 pi) th)
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(command "pline" p0 p1 p2 p3 p4 p5 "c")
( K2 z$ w$ `4 F (command "revolve" (entlast) "" "y" 360);(entlast)获取最后生成的图元" D3 z0 K: t* w+ K+ M) \
(setq s1 (entlast));做三维，常常需要把一些后面用到的对象保存起来; z h% ~ D4 n* \) Y' r' L, b
(command "ucs" "n" "x" "");ucs绕x轴旋转90度
# z; a/ y& a+ {0 t (setq 2p (trans 2p 0 1));;点从wcs转到ucs，这是三维重点
1 y# H3 [/ Z5 J- T7 }* b$ k& m (setq 3p (trans 3p 0 1))$ ?4 A% S( r# h8 H3 ^( |
(setq 4p (trans 4p 0 1))
6 W- `% o3 Q& G& s) A+ X3 x (command "cylinder" 3p (* 0.0625 (- d m)) (- th))
: y( y0 O( Z. }% @( W- H, | (setq s2 (entlast))
. y. u! @ j' I3 ~" K (command "cylinder" 4p (* 0.125 (- d m)) (* 0.2 th))
; n( G! n: B4 N6 h: H0 @8 N (command "union" s2 (entlast) ""), m. \7 `& @, G) q. [+ ~" {
(setq s2 (entlast))
8 ~/ F' U) g+ H2 T (command "copy" s2 "" 3p (polar 1p (* 0.5 pi) (distance 1p 3p)))# R, B( \: b+ P
(setq s3 (entlast))
: }9 r0 z8 P- T- O0 h (command "copy" s2 "" 3p (polar 1p pi (distance 1p 3p)))9 T4 |7 }0 Q8 V2 s# B
(setq s4 (entlast))
& I! R, C( v6 v" w& Q (command "copy" s2 "" 3p (polar 1p (* 1.5 pi) (distance 1p 3p)))
' q- e2 A$ Z. @2 s! N1 Z# m. K (command "subtract" s1 "" s2 s3 s4 (entlast)"")" N# n6 h/ U' {# L
(command "VPOINT" '(1 1 1))3 I3 W2 d1 M! T/ Z2 k! L+ S
(command "shade")
! E# M; V+ C3 N4 S4 D! h (command "zoom" "e")6 n6 e6 Y4 ]# S# |4 O
(setvar "cmdecho" 1)8 y! m$ M# G2 I. ]
(setvar "osmode" 4133)! s$ ~" ^( i( k/ b* K
(princ)6 c: W+ P7 s, ~5 ~! G# b- g
)! q H: d4 N5 G2 L
;;show函数将file_name幻灯片显示到image_name控件中9 x/ \) F9 J4 c6 ^7 f6 o ^5 Z5 Z3 C
(defun show(image_name file_name / x y)2 t; E! r: q9 {
(setq x (dimx_tile image_name));取得image的宽高
: i1 T3 ~: W" c (setq y (dimy_tile image_name))1 G0 V9 H( V, O3 I/ w" V a' j. @
(start_image image_name);幻灯片处理开始
0 ^) O- B. G7 H (slide_image -10 -25 x y file_name);幻灯片处理，(-10 -25)为左上角点9 x% C) Z2 W1 ]+ T- ]
(end_image);幻灯片处理结束: Z! Z+ }6 x- y4 n( {8 S- r
)
$ X1 Z8 ~/ N1 _' i;;getdata获取编辑控件的值
. z5 n1 b0 V1 }8 V1 D2 b, { N(defun getdata()
) V# l! Q- t ?9 S# \1 G4 Y: Y( ]% ^0 i (setq d (atof (get_tile "key_D")))
' P1 v; T' ~! m+ T% i% C0 U W (setq m (atof (get_tile "key_M")))
; O1 F5 I1 L6 m( T& W (setq n (atof (get_tile "key_N")))
B$ @: P' D, `+ Z (setq h (atof (get_tile "key_H")))2 \! Y, ~0 g- z
(setq th (atof (get_tile "key_T")))9 A: ~# H- X/ A! [9 b3 ?
)
1 `5 N z! C- h$ D3 n# y$ u% c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2 Q% S8 X- C0 ]6 m% |# N5 ]. j
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发表于 2008-10-30 15:39