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。
! _7 g" g8 R) F; w" |: x这一辑是对话框，题材是三维，在三维中和二维有些差异。
V" n6 c' v" r6 b! j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：8 [0 W* l# C: I9 p
: A/ A" d2 Z, T- e3 ~& E7 b下面还是来看程序代码吧：& B' f; J( e. i0 J
;;;简易3D法兰绘制/ n; [1 f+ {5 S8 Q% H
;;;使用时必先保证D盘的example文件夹里有flange.dcl和flange.sld; B0 v8 ^' c7 v, w3 J& y
(defun c:flange (), a, z" c; B& O# M6 f
(setq index (load_dialog "d:\\example\\flange.dcl"));加载对话框
$ w0 U4 W3 A, {, @8 q. ?4 w (if (< index 0) (exit))
! v" C$ K4 n% P* F (setq next 2)
' m m& G% ?5 A0 n9 T/ h5 y2 Y. k (while (>= next 2)6 R$ `/ Q! {7 D0 Z3 y& b+ \
(if (not (new_dialog "flange" index));初始化对话框
1 I" D. D, B0 }5 J (exit)0 e# ^$ ~9 N. Z8 ?) b- s
)
& x5 @" ~( d; s5 u! y5 }: d( Z (show "key_image" "d:\\example\\flange.sld")& W. f6 |1 r5 u
(set_tile "key_D"(rtos 100 2 2));初始化控件
" K- x& e b# D% h; [) i5 u/ R (set_tile "key_M"(rtos 50 2 2))5 Z3 H1 R% m) H2 u" x
(set_tile "key_N"(rtos 25 2 2))
) c4 q: b3 o, d7 S6 B3 D) y* y (set_tile "key_H"(rtos 50 2 2))
. n( i1 {/ B/ x0 @* H (set_tile "key_T"(rtos 20 2 2))9 b7 @+ R" ?/ X4 ~5 T+ s- ]
(action_tile "accept" "(getdata) (done_dialog 1)" );accept动作7 P: J5 E4 J9 w
(action_tile "cancel" "(done_dialog 0)" );cancel动作( M! h" N! V0 e; R* @
(setq next (start_dialog));显示对话框3 D* m5 {' S5 N \! K% e1 a, l8 _" t* h' t
(cond# P- L( u& F u) y6 z' o s* L
((= next 1)3 y- g+ w! y$ h. J% \
(draw)
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((= next 0)* {' p2 R2 y& O7 e7 }
(prompt "\n取消了法兰绘制")
' c2 h; R! ^5 S9 }% _' h )
}5 _: `" p( M# R8 | );cond
6 e$ U' J7 r; ] h) W5 ]7 B );while4 A+ B A4 S# s4 `! y
(unload_dialog index);卸载对话框
$ b" h7 _$ y- s% B# |) o3 D K (princ)2 b. w- ~' j/ ]+ ^( K0 O
)
2 n3 \0 D' }0 c. @( ^, ?;;draw; u( ]! [0 ` g5 P. p, m1 v/ t1 K! S& n
(defun draw();/ 1p 2p p0 p1 p2 p3 p4 p5 s1 s2 s3)# }) N% C7 d$ N/ S$ X) u' c7 a
(setvar "cmdecho" 0)
I* j6 `" L/ e- [8 C8 T- d2 ~2 m (setvar "osmode" 0)
' _6 n5 o9 A: r- Q* R: Z (setvar "isolines" 20)
, p* J! g/ a/ z (command "ucs" "" "");在wcs中工作2 ?! }5 v; a5 G; h: u: Q
(setq 1p '(0 0 0)
8 i% M) s* }8 U/ A" E 2P (list 0 h 0)5 F: A5 }0 t! _, v7 R( |# ~# l
p0 (polar 1p 0 (* 0.5 n))
8 y" T4 B% m/ v, O1 |' w p1 (polar 1p 0 (* 0.5 d))
3 x' `% }' T3 R$ z; z p2 (polar p1 (* 0.5 pi) th)
5 y1 A5 P# Y2 O3 [ p3 (polar p2 pi (* 0.5 (- d m)))
6 N5 p) }2 ]8 R) n) X+ h p5 (polar p0 (* 0.5 pi) h)3 h& C7 e0 N" k) e" |, A4 Z
p4 (polar p5 0 (* 0.5 (- m n)))5 G4 Y6 c. t3 n( b
3p (polar 1p 0 (* 0.25 (+ d m)))
' ?; |, h% ^1 V 4p (polar 3p (* 0.5 pi) th)
: ~ n# Z& |" v2 X# P$ h )
1 T; T* B: L1 P9 L c o: M2 w (command "pline" p0 p1 p2 p3 p4 p5 "c")# d* r1 K" Z1 O" L$ \8 P0 ?- o: O
(command "revolve" (entlast) "" "y" 360);(entlast)获取最后生成的图元
, P9 ?4 X; B6 Y$ N9 u (setq s1 (entlast));做三维，常常需要把一些后面用到的对象保存起来
$ ?; @$ Q% e$ y (command "ucs" "n" "x" "");ucs绕x轴旋转90度: J8 l& |' u5 m; m, ~+ H
(setq 2p (trans 2p 0 1));;点从wcs转到ucs，这是三维重点
! b" I4 N% ]7 {4 A' d* U (setq 3p (trans 3p 0 1))) j, h& K! o7 c, x: W
(setq 4p (trans 4p 0 1))3 Q4 u7 o# N Q7 w* J8 C
(command "cylinder" 3p (* 0.0625 (- d m)) (- th))- Y r/ ]% U5 m1 x
(setq s2 (entlast))
* g4 P6 a( e) B" \. ?1 W (command "cylinder" 4p (* 0.125 (- d m)) (* 0.2 th)); W8 q& f2 g- t' I- W3 _
(command "union" s2 (entlast) "")
/ F& S0 i# o3 l* G) d5 b1 Y (setq s2 (entlast))/ s. h+ C1 L ?% S0 T
(command "copy" s2 "" 3p (polar 1p (* 0.5 pi) (distance 1p 3p)))
. u0 ], m$ U$ J" T; k6 M6 c' ?" X: E0 ^ (setq s3 (entlast))
/ Y( @1 U* E) v3 ?" R (command "copy" s2 "" 3p (polar 1p pi (distance 1p 3p)))6 C1 }2 h, o: Z6 o8 k* O
(setq s4 (entlast))
. \2 [1 e( i" K; Z. ` (command "copy" s2 "" 3p (polar 1p (* 1.5 pi) (distance 1p 3p)))1 L% }) s& W6 N( {1 t- r g- f
(command "subtract" s1 "" s2 s3 s4 (entlast)"")
! Y5 {8 W0 [/ y2 P) Z (command "VPOINT" '(1 1 1))
U1 n m: c: i7 U+ C/ X (command "shade")
& y P! p/ s1 f# B' D# |( H' X1 j (command "zoom" "e")1 L* J5 D4 ?$ F. J
(setvar "cmdecho" 1)) U6 S T) {5 z
(setvar "osmode" 4133)
9 a, Y* P9 X% J (princ)
; f! ^9 b) }7 Y0 W6 A- c; D)# d5 C, u! d+ V5 h5 G0 Z7 U
;;show函数将file_name幻灯片显示到image_name控件中
: a* x8 r! A5 N# b# @: I(defun show(image_name file_name / x y)
( ^8 s8 p+ Z8 e6 ^$ ?' y% H3 K/ M4 G (setq x (dimx_tile image_name));取得image的宽高 ?% I# V; r. m9 t
(setq y (dimy_tile image_name)) j) q: x9 `0 a
(start_image image_name);幻灯片处理开始0 _5 l5 ?! J" s. ^/ O
(slide_image -10 -25 x y file_name);幻灯片处理，(-10 -25)为左上角点8 Z; A8 ]& A9 c2 C
(end_image);幻灯片处理结束! V4 d$ I9 B1 G! M; D2 |
) ! a9 E U5 @4 i! F* _. S6 L% H o
;;getdata获取编辑控件的值
6 K& B3 c6 e2 ~6 g" |5 y(defun getdata()
; i6 n) u( E: `! z7 Q! L6 G (setq d (atof (get_tile "key_D")))- i( ~2 o A) y N& f% w$ g. n6 S/ d# Y
(setq m (atof (get_tile "key_M"))). a- X6 M2 s* a! F) g# x. N
(setq n (atof (get_tile "key_N")))3 a; R& _& H4 g7 V' M2 o1 q& q. C
(setq h (atof (get_tile "key_H"))): \( I) q2 y- c* ~2 R S
(setq th (atof (get_tile "key_T")))
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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& o d: s7 E2 m! G( u) \
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发表于 2008-10-30 15:39