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。
. P8 k# R- v+ C1 }; @/ [这一辑是对话框，题材是三维，在三维中和二维有些差异。
: X' F# [; G: G v W+ b' T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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( a7 a4 o \9 W3 q3 D下面还是来看程序代码吧：) c- w, N; X+ }- R* G, c0 `+ U
;;;简易3D法兰绘制5 ]) Y6 U- j% d# A& u
;;;使用时必先保证D盘的example文件夹里有flange.dcl和flange.sld
& n( N4 T0 T8 P1 Z9 v8 k& v' z(defun c:flange ()# J/ n" ]! `: k5 r
(setq index (load_dialog "d:\\example\\flange.dcl"));加载对话框' Q8 x1 q/ \" n
(if (< index 0) (exit))
* B, W# G2 O) G8 T (setq next 2)
t) Y; U3 e+ j" E2 |8 G0 Z (while (>= next 2)
0 z; \0 L" S: }9 T& m (if (not (new_dialog "flange" index));初始化对话框
" [$ e0 S2 c$ J9 d, Y+ S (exit)+ n7 b& G/ M5 V5 Q2 w% v3 I
)
2 s1 G7 [: J1 Y8 u (show "key_image" "d:\\example\\flange.sld")
6 I3 v, Y8 L \+ H (set_tile "key_D"(rtos 100 2 2));初始化控件
: [5 S+ h+ Z" F (set_tile "key_M"(rtos 50 2 2))
* G- {3 q6 ?% B. F (set_tile "key_N"(rtos 25 2 2)): M) w8 A; A: y7 Y7 O! A- ]% X
(set_tile "key_H"(rtos 50 2 2))
4 L. q) g7 _) a0 q5 g8 { (set_tile "key_T"(rtos 20 2 2))- H* @9 m5 u1 Q) M
(action_tile "accept" "(getdata) (done_dialog 1)" );accept动作7 ?( K; ^2 C9 Z; F- V
(action_tile "cancel" "(done_dialog 0)" );cancel动作
7 E4 W' C0 U3 J# U. ]7 `# P' C) n (setq next (start_dialog));显示对话框7 q8 C6 ?! c$ g3 S
(cond3 E, y8 G: q8 U, c5 c
((= next 1)
/ b1 J6 E& ?; q% p (draw) {7 e4 b9 C& q. O6 w: b8 e) s/ x
)
( a% O5 Q. J& ]9 ^5 E/ }: L9 r ((= next 0)
; \4 v" h; ^0 O (prompt "\n取消了法兰绘制")
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F* J# H2 G, A' ?3 y0 g );cond( X: H$ ]( U: m& V
);while3 r1 f- j+ D9 n6 N) O
(unload_dialog index);卸载对话框
) a7 [7 \: w& c1 J (princ)9 Z2 O, h# K5 F% Z! R$ T/ J
)
& b! i4 K1 F4 M9 h;;draw
# X5 \0 g0 h0 D(defun draw();/ 1p 2p p0 p1 p2 p3 p4 p5 s1 s2 s3)
( ]! L: T# a" X+ i c9 L6 H (setvar "cmdecho" 0)
$ F+ C, Z- f/ i- t& g F; R (setvar "osmode" 0)
1 E) ?1 @. u# n3 f) z I3 A (setvar "isolines" 20)
$ x& ^3 [& D+ A) B! ] (command "ucs" "" "");在wcs中工作
" W- D5 b, Y2 Z (setq 1p '(0 0 0)3 J9 A ], L0 e2 i( f/ b
2P (list 0 h 0)
$ D9 e$ J @: x3 R! j6 t p0 (polar 1p 0 (* 0.5 n))
/ G( q# v2 z' K9 P5 n/ V p1 (polar 1p 0 (* 0.5 d))
z% A) x0 l$ W6 s- Z8 c p2 (polar p1 (* 0.5 pi) th)
1 A% W/ N' d- U7 [' {2 y p3 (polar p2 pi (* 0.5 (- d m)))7 s( e. @* v" U! p Y: `
p5 (polar p0 (* 0.5 pi) h)
9 t+ o5 S$ r3 s4 K+ i: A. g' }0 ^ p4 (polar p5 0 (* 0.5 (- m n)))
, Q# ?6 @; E6 \- G 3p (polar 1p 0 (* 0.25 (+ d m)))* c3 [- _$ E8 E4 T' x# z
4p (polar 3p (* 0.5 pi) th)
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(command "pline" p0 p1 p2 p3 p4 p5 "c") T. @$ M& ]" w8 h* f6 u
(command "revolve" (entlast) "" "y" 360);(entlast)获取最后生成的图元
" H( r$ u. q% T$ M! D: ` X2 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
8 h/ W7 ^4 Y2 R! C3 r (command "ucs" "n" "x" "");ucs绕x轴旋转90度
$ S# k6 I' t: p6 |( \ (setq 2p (trans 2p 0 1));;点从wcs转到ucs，这是三维重点
/ r6 e+ ~$ f7 X; l& i% G8 X I) u' l (setq 3p (trans 3p 0 1))4 M2 b+ }# r/ e7 W1 M2 t
(setq 4p (trans 4p 0 1))8 Q% [5 O5 e! o% O) `# k; C) t
(command "cylinder" 3p (* 0.0625 (- d m)) (- th))' G$ f( @% b) l" i$ [3 f
(setq s2 (entlast))# z4 A# Y% C+ R8 E
(command "cylinder" 4p (* 0.125 (- d m)) (* 0.2 th))
! s/ c k$ z n0 O( F1 } E6 N (command "union" s2 (entlast) "")
7 H7 I/ R0 L. G1 } (setq s2 (entlast))- N* K8 D- Z$ Q
(command "copy" s2 "" 3p (polar 1p (* 0.5 pi) (distance 1p 3p)))
/ ^ l% C$ ^) [2 J2 Q! f+ E2 x3 X* d) g (setq s3 (entlast))* [- Z) j5 H0 M5 }
(command "copy" s2 "" 3p (polar 1p pi (distance 1p 3p))): q% j$ ]# N, E
(setq s4 (entlast))' W6 s+ f, F. N6 c
(command "copy" s2 "" 3p (polar 1p (* 1.5 pi) (distance 1p 3p)))! `; w8 ^. [- s9 s
(command "subtract" s1 "" s2 s3 s4 (entlast)"")
. K% o* D) w4 j2 z+ k3 u (command "VPOINT" '(1 1 1))
$ g' m4 O, F7 Z+ P5 A/ w (command "shade")! I/ Z% O! C0 | G/ [+ H; p
(command "zoom" "e")
$ J) [8 N9 O! x% J K7 M$ s( n! G9 ]( \ (setvar "cmdecho" 1)
, a4 z, [4 x5 f (setvar "osmode" 4133)
8 q& P2 O+ k6 c. Q* l1 [6 [ (princ)
3 p. o, ~& w% ?& p)
$ n" N. l+ s6 P, B# I4 E' j. D& S;;show函数将file_name幻灯片显示到image_name控件中& Q% a- X. J) G4 T
(defun show(image_name file_name / x y)
' ?* Z" K s5 o8 I' ~ (setq x (dimx_tile image_name));取得image的宽高
) Y4 [* m; O( X4 k3 B7 m2 b (setq y (dimy_tile image_name))
+ W7 B8 n5 H( `- a8 Z1 w8 e (start_image image_name);幻灯片处理开始
2 }; c6 x. l* E: R2 | (slide_image -10 -25 x y file_name);幻灯片处理，(-10 -25)为左上角点
( K( ~3 N* l z4 K+ R (end_image);幻灯片处理结束2 Y6 w# w6 W" e, |2 C
)
6 X4 {7 o# U/ d3 X ^8 H$ f# s; Z;;getdata获取编辑控件的值
6 a" { U& p; I, y3 ~7 ]# B! I+ k(defun getdata()
6 F x; [- ^" T; ~8 Y (setq d (atof (get_tile "key_D")))/ [8 y% S; W, X+ S
(setq m (atof (get_tile "key_M")))4 _/ \3 z2 a0 U5 B
(setq n (atof (get_tile "key_N")))) @$ H; O. X/ P, ?3 A4 z3 y4 O
(setq h (atof (get_tile "key_H")))
7 c3 [; Y9 q, q3 V1 n (setq th (atof (get_tile "key_T")))9 A% ]) e1 y+ N4 _
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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/ V, m. F' E8 ~
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发表于 2008-10-30 15:39