lichh_2003 发表于 2006-3-30 09:09:00

求助：怎么样可以在闭和内裁剪出里面的图元？？

<P>求助各位，怎么样可以将一个闭和区域内的所有图元裁剪出来，什么方法都可以，</P>
<P>谢谢。最好能给小弟完整的事例谢谢</P>

wyj7485 发表于 2006-3-30 17:40:00

<P>给一个局部放大程序供参考:</P>
<P>(defun c:FD (/&nbsp;&nbsp;&nbsp; set1 set2 set3 set4&nbsp;cpoint&nbsp;&nbsp; r&nbsp;&nbsp;&nbsp; p&nbsp;&nbsp;&nbsp; k&nbsp; n<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ep&nbsp;&nbsp; ss&nbsp; pt1&nbsp; pt2&nbsp; pt3&nbsp;pt4&nbsp; dh&nbsp;&nbsp; smw1 me&nbsp;&nbsp; me1&nbsp; xb<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; yb&nbsp;&nbsp; pp&nbsp; pn&nbsp;&nbsp; kk&nbsp;&nbsp; me2&nbsp;me3&nbsp; smw2 me4&nbsp; me5&nbsp; x1&nbsp; y1<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; )<BR>&nbsp; (prompt "\n请指定放大区域:\n")<BR>&nbsp; (setq set1 (getvar "osmode"))<BR>&nbsp; (setq set2 (getvar "orthomode"))<BR>&nbsp; (SETQ SET3 (GETVAR "BLIPMODE"))<BR>&nbsp; (SETQ SET4 (GETVAR "CMDECHO"))<BR>&nbsp; (SETVAR "BLIPMODE" 0)<BR>&nbsp; (setvar "osmode" 0)<BR>&nbsp; (setvar "orthomode" 0)<BR>&nbsp; (SETVAR "CMDECHO" 0)<BR>&nbsp; (command "circle" pause pause)<BR>&nbsp; (setq cpoint (cdr (assoc 10 (entget (entlast)))))<BR>&nbsp; (setq r (cdr (assoc 40 (entget (entlast)))))<BR>&nbsp; (setq pt1 (polar cpoint (/ pi 2) (+ 0.01 r)))<BR>&nbsp; (setq pt2 (polar pt1 (* pi 0.75) 10))<BR>&nbsp; (setq pt3 (polar pt2 pi 8))<BR>&nbsp; (setq pt4 (polar pt3 (* pi 0.25) 2))<BR>&nbsp; (command "line" pt1 pt2 pt3 "")<BR>&nbsp; (setq dh (getstring "\n 请输入局部代号:"))<BR>&nbsp; (command "text" pt4 "4" "0" dh)<BR>&nbsp; (setq p (getpoint "\n 请指定放大图放置位置:"))<BR>&nbsp; (setq k (getreal "\n 请指定放大倍数:"))<BR>&nbsp; (command "copy" "cp")<BR>&nbsp; (setq n 0)<BR>&nbsp; (repeat 180<BR>&nbsp;&nbsp;&nbsp; (command (polar cpoint (/ (* 2 n pi) 180) r))<BR>&nbsp;&nbsp;&nbsp; (setq n (1+ n))<BR>&nbsp; )<BR>&nbsp; (command "" "" cpoint p)<BR>&nbsp; (setq n 0)<BR>&nbsp; (setvar "PICKBOX" 5)<BR>&nbsp; (command "ZOOM" "C" P (* 3 r))<BR>&nbsp; (command "circle" p r)<BR>&nbsp; (setq ep (entlast))<BR>&nbsp; (command "TRIM" EP "")(repeat 180(command (polar p (/ (* 2 n pi) 180) (* r 1.1)))(command "f" (polar p (/ (* 2 n pi) 180) (* r 1.1)))(setq n (+ n 1))(command (polar p (/ (* 2 n pi) 180) (* r 1.01)) ""))(command "")<BR>&nbsp; (command "zoom" "p")<BR>&nbsp; (setq&nbsp;ss (ssget "c"<BR>&nbsp;&nbsp;&nbsp; (list (- (car p) r) (- (cadr p) r))<BR>&nbsp;&nbsp;&nbsp; (list (+ (car p) r) (+ (cadr p) r))<BR>&nbsp;&nbsp;&nbsp; )<BR>&nbsp; )<BR>&nbsp; (command "scale" ss "" p k)<BR>&nbsp; (command "erase" ep "")<BR>&nbsp; (setq smw1 (list 0 0 0))<BR>&nbsp; (setq smw2 (polar smw1 0 24))<BR>;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;(command "text" smw1 "4" "0" (strcat dh "部放大" ))<BR>&nbsp; (setq me (entlast))<BR>&nbsp; (setq me1 (entget me))<BR>;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;(command "line" smw1 smw2 "")(setq me2 (entlast))(setq me3 (entget me2));;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;(command "text" smw1 "4" "0" (strcat&nbsp; (rtos k) ":1" ))(setq me4 (entlast))(setq me5 (entget me4));;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;(setq pn T)(princ"\n 请确定说明文字位置:")(while pn(setq pp (grread t))(setq kk (car pp))(setq pp (cadr pp))(setq xb (nth 0 pp))(setq yb (nth 1 pp))(setq x1 (- xb 36))(setq y1 (+ yb 12));;;;;;;;;;;;;;;;;;;;;;;;;;;(setq me1 (subst (list 10 x1 y1)(assoc 10 me1) me1))(entmod me1);;;;;;;;;;;;;;;;;;;;;;;;;;;;;(setq me3 (subst (list 10 (- x1 4) (- y1 2))(assoc 10 me3) me3))(setq me3 (subst (list 11 (+ x1 20) (- y1 2))(assoc 11 me3) me3))(entmod me3);;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;(setq me5 (subst (list 10 (+ x1 4) (- y1 8))(assoc 10 me5) me5))(entmod me5);;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;(if (= kk 3)(setq pn nil));;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;)(command "redraw")(setvar "osmode" set1)(setvar "orthomode" set2)(setvar "blipmode" set3)(setvar "cmdecho" set4)(PRINC))</P>
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<P>)</P>

lichh_2003 发表于 2006-4-7 08:35:00

<P>能不能帮忙，把选择圆该为自定义的任意闭和多边形呢</P>

lichh_2003 发表于 2006-4-14 10:11:00

楼住，来没来啊。帮帮忙啊，我不动LISP

longer1000 发表于 2012-2-8 12:09:36

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