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。+ B) r6 H9 L. w* t' [
这一辑是对话框，题材是三维，在三维中和二维有些差异。+ b! c1 x5 |$ ?6 b- x2 k8 @( a+ c
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：, Z& a9 d* I7 A5 I- Z2 h, V# t
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下面还是来看程序代码吧：
# r6 e+ n+ q% t3 l8 C;;;简易3D法兰绘制
9 u# C5 d6 y9 O7 F8 o;;;使用时必先保证D盘的example文件夹里有flange.dcl和flange.sld
, P1 l1 n6 b7 k* d2 K3 R(defun c:flange ()
4 b p/ [0 s9 D# r' H* r/ Q (setq index (load_dialog "d:\\example\\flange.dcl"));加载对话框
9 I9 o }/ H; v- C* r; E) c (if (< index 0) (exit))3 b+ h- H8 @1 M8 ^. m/ `: c9 N
(setq next 2)
2 L% m( d. I- L4 R1 d& V& |) o$ Y! U (while (>= next 2)
9 u- D! S) k" M8 ]7 R, G$ T1 r (if (not (new_dialog "flange" index));初始化对话框1 f8 R) R; g; l+ }" V# ?# w9 b
(exit)9 u9 |/ B7 e0 L. v- `- d/ ~
)
2 d+ @, Y- J1 c (show "key_image" "d:\\example\\flange.sld")
" z f: q* D: ]7 V1 X& } (set_tile "key_D"(rtos 100 2 2));初始化控件7 Q, F1 t! g1 y/ z2 r- m t; N% Q
(set_tile "key_M"(rtos 50 2 2))
: E4 e' p( G9 n (set_tile "key_N"(rtos 25 2 2)); G! N9 s h+ `: m& M8 O
(set_tile "key_H"(rtos 50 2 2))1 R+ {9 H6 T* J
(set_tile "key_T"(rtos 20 2 2))% ?8 J7 U6 m3 ]& @8 O3 `
(action_tile "accept" "(getdata) (done_dialog 1)" );accept动作6 q4 A5 ?- d E4 {% E
(action_tile "cancel" "(done_dialog 0)" );cancel动作
4 p9 G( R* Q3 b/ Y+ u# @ (setq next (start_dialog));显示对话框
# k# B- H* [7 C (cond
/ B' U1 Q% z. ] `3 G @) b ((= next 1)
5 h; g( n8 H9 Z6 S. o3 I' S# d (draw)
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((= next 0) y/ t( n1 l" T% f
(prompt "\n取消了法兰绘制")
& F% i: [1 g# P4 B! ] m )
" z& k# }. H( b ]! {4 X: K7 T );cond2 j V" e+ h( ^1 Q
);while2 K8 C: W; a- v8 _3 ?+ {, s
(unload_dialog index);卸载对话框. |# d; y/ Q( |. }
(princ)
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;;draw% y# K1 R' G% D9 b
(defun draw();/ 1p 2p p0 p1 p2 p3 p4 p5 s1 s2 s3)
0 g) L% Z. _/ i (setvar "cmdecho" 0)
* m$ s0 O* E7 ?5 i6 p (setvar "osmode" 0) a. w" {/ u3 A. y/ F# U
(setvar "isolines" 20)
1 z- u7 W- O8 ?# \" C (command "ucs" "" "");在wcs中工作
+ i/ ~0 v0 n& E7 e4 h (setq 1p '(0 0 0)9 v6 b# o6 u% P' V% S
2P (list 0 h 0)" L, i1 z! e3 s+ d( ?
p0 (polar 1p 0 (* 0.5 n)), p7 a9 S. Y( l( j
p1 (polar 1p 0 (* 0.5 d))
, z& c0 J: B9 ^/ t p2 (polar p1 (* 0.5 pi) th)
, T* O6 H. g; `' v p3 (polar p2 pi (* 0.5 (- d m)))
7 M9 u2 v& W" ^$ |& n# t+ R5 C% W p5 (polar p0 (* 0.5 pi) h)% b" B" r$ o5 ~. u/ ^) J4 q' `: C$ M7 \
p4 (polar p5 0 (* 0.5 (- m n)))4 ]& V; Y9 r6 z9 e. E4 \3 b
3p (polar 1p 0 (* 0.25 (+ d m)))
3 b; A0 n; D* _! s; [, u 4p (polar 3p (* 0.5 pi) th)
B2 r6 X4 a+ R- V' I/ e; c$ K )
9 N& P$ A0 Y# C' I" n (command "pline" p0 p1 p2 p3 p4 p5 "c")
. d$ M/ N9 _& P5 g (command "revolve" (entlast) "" "y" 360);(entlast)获取最后生成的图元' j8 |2 ?5 E2 k+ h" X0 s
(setq s1 (entlast));做三维，常常需要把一些后面用到的对象保存起来
7 d; e& m+ B/ T ] a (command "ucs" "n" "x" "");ucs绕x轴旋转90度
+ ~! w- ~% |+ s (setq 2p (trans 2p 0 1));;点从wcs转到ucs，这是三维重点7 D, q. J, g8 H; D, }( i6 K, x
(setq 3p (trans 3p 0 1))0 T# [/ k( e+ ?1 T
(setq 4p (trans 4p 0 1))
$ h5 K8 r; h- m- Q (command "cylinder" 3p (* 0.0625 (- d m)) (- th))
8 j. ~: b+ ~" q, \! \7 X: s (setq s2 (entlast))5 B7 s$ A' }2 C( }* E" n
(command "cylinder" 4p (* 0.125 (- d m)) (* 0.2 th))
# l% N9 p3 h9 I2 R7 e( A (command "union" s2 (entlast) "")
- |8 f' j% o% p7 M* y' { (setq s2 (entlast))7 Q$ B" k, `4 _
(command "copy" s2 "" 3p (polar 1p (* 0.5 pi) (distance 1p 3p)))
# L5 ? Q; `+ d" i# T (setq s3 (entlast))
+ F. T3 u# _- c( }9 Y, \- c+ ], I (command "copy" s2 "" 3p (polar 1p pi (distance 1p 3p)))# V# a' ~0 m: b3 X. C
(setq s4 (entlast)); D) M) X0 u9 H% `/ @8 P
(command "copy" s2 "" 3p (polar 1p (* 1.5 pi) (distance 1p 3p)))
& K, v2 }6 J7 @$ g/ _: f) W (command "subtract" s1 "" s2 s3 s4 (entlast)"")
# P4 X2 b4 ^( f) P (command "VPOINT" '(1 1 1))
. F7 @* n5 D& T. w4 |+ q (command "shade")- f8 Y8 Q, D0 i$ j7 n3 u% n
(command "zoom" "e")
5 X! A G0 O: Q+ ]4 z (setvar "cmdecho" 1)
/ o( g$ |5 }( W: \7 @$ ^* R$ g (setvar "osmode" 4133)! o; r/ J5 G( g+ ?. t! `
(princ)
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;;show函数将file_name幻灯片显示到image_name控件中- g' ~+ y& [# p! f/ z3 P
(defun show(image_name file_name / x y)
! e8 u: M9 |7 e+ q (setq x (dimx_tile image_name));取得image的宽高. b' i3 v2 `9 k2 h- H, J
(setq y (dimy_tile image_name))
0 [0 z( F% G; J" w; Q! b (start_image image_name);幻灯片处理开始
/ T+ P; A+ L9 z" ` (slide_image -10 -25 x y file_name);幻灯片处理，(-10 -25)为左上角点( P; n8 | X8 d1 m4 @' y4 X
(end_image);幻灯片处理结束& E! T) F y; ?" v% Y( S
) * x8 \- X( h: ~# z2 I4 f# r. ~
;;getdata获取编辑控件的值
2 x/ q+ \( n( z! ` S+ f& B! J(defun getdata()
' ]# l* m% `! T: g (setq d (atof (get_tile "key_D")))
- n' h T9 i1 t# @$ h3 X* L S (setq m (atof (get_tile "key_M")))4 P' O: C1 K7 m* o
(setq n (atof (get_tile "key_N")))
* O' c3 d+ l; E: _4 n9 B (setq h (atof (get_tile "key_H")))
) e" u7 S7 h2 n7 }. _# r (setq th (atof (get_tile "key_T")))
s" X: X% i, w. R3 H% A0 g)
2 j* y; o$ q" W& j7 W! w! N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/ [% o6 u& T3 k' t5 Q5 a: W, C
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发表于 2008-10-30 15:39