用lisp写的计算线长的程式
本帖最后由 作者 于 2006-4-26 19:48:20 编辑 <br /><br /> 明经通道的计算线长程式一次只能选一条线,极不方便,这是我用lisp写的计算线长的程式,非常好用<BR> <BR> (defun c:abk ()<BR> (setvar "cmdecho" 0)<BR> (command "layer" "S" "0" "")<BR> (setq p (/ pi 2.0)<BR> g (+ pi p))<BR> (setq aa (ssget))<BR> (setq i 0)<BR> (setq ab (ssadd))<BR> (repeat (sslength aa)<BR> (setq aab (ssname aa i))<BR> (setq bb (cdr (assoc 0 (entget aab))))<BR> (cond ((= bb "LINE")<BR> (setq pd (list aab (cdr (assoc 10 (entget aab)))))<BR> ))<BR> (cond ((= bb "CIRCLE")<BR> (setq pd (list aab (cdr (assoc 10 (entget aab)))))<BR> ))<BR> (cond ((= bb "ARC")<BR> (setq pd (list aab (cdr (assoc 10 (entget aab)))))<BR> )) <BR> (cond ((= i 0)<BR> (setq j 0)<BR> (cond ((= j 0)<BR> (cond ((/= bb "LINE")<BR> (setq aad 0)))<BR> (cond ((/= bb "CIRCLE")<BR> (setq bad 0)))<BR> (cond ((/= bb "ARC")<BR> (setq cad 0)))))))<BR> (setq j (+ j 1))<BR> (cond ((= bb "LINE")<BR> (setq st (cdr (assoc 11 (entget aab))))<BR> (setq qed (cdr (assoc 10 (entget aab))))<BR> (setq ad (distance st qed))<BR> (cond ((= i 0)<BR> (setq aad ad)))<BR> (cond ((>= i 1)<BR> (setq aad (+ ad aad))))<BR> )) <BR> (cond ((= bb "CIRCLE")<BR> (setq aeed (cdr (assoc 40 (entget aab))))<BR> (setq ad (* aeed pi 2.0))<BR> (cond ((= i 0)<BR> (setq bad ad)))<BR> (cond ((>= i 1)<BR> (setq bad (+ ad bad))))<BR> ))<BR> (cond ((= bb "ARC")<BR> (setq ast (cdr (assoc 50 (entget aab))))<BR> (setq sst (cdr (assoc 51 (entget aab))))<BR> (setq beed (cdr (assoc 40 (entget aab))))<BR> (cond ((>= ast 0)<BR> (cond ((< ast p)<BR> (cond ((> ast sst)<BR> (cond ((>= (* pi 2.0))<BR> (setq xb (- ast sst))))<BR> (cond ((> sst 0)<BR> (setq xb1 (- p ast))<BR> (setq xb (+ g xb1 sst))))))<BR> (cond ((< ast sst)<BR> (cond ((>= sst 0)<BR> (setq xb1 (- p ast))<BR> (setq xb (+ pi xb1 sst))))<BR> (cond ((< sst (* pi 2.0))<BR> (cond ((< sst p)<BR> (setq xb (- sst ast))))<BR> (cond ((< sst pi)<BR> (setq xb1 (- p ast))<BR> (setq xb2 (- sst p))<BR> (setq xb (+ xb1 xb2))))<BR> (cond ((< sst g)<BR> (setq xb1 (- p ast))<BR> (setq xb2 (- sst pi))<BR> (setq xb (+ xb1 xb2 p))))<BR> (cond ((< sst (* pi 2.0))<BR> (setq xb1 (- p ast))<BR> (setq xb2 (- sst g))<BR> (setq xb (+ xb1 xb2 pi))))<BR> ))<BR> ))<BR> ))))<BR> (cond ((>= ast p)<BR> (cond ((< ast pi)<BR> (cond ((> ast sst)<BR> (cond ((<= sst p)<BR> (setq xb1 (- ast p))<BR> (setq xb2 (- p sst))<BR> (setq xb (- (* pi 2.0)xb1 xb2))))<BR> (cond ((> sst p)<BR> (setq xb (- (* pi 2.0)(- ast sst)))))))<BR> (cond ((< ast sst)<BR> (setq xb (- sst ast))))<BR> ))))<BR> <BR> <BR> (cond ((>= ast pi)<BR> (cond ((< ast g)<BR> (cond ((> ast sst)<BR> (cond ((> sst 0)<BR> (setq xb2 sst)<BR> (setq xb1 (- g ast))<BR> (setq xb (+ xb1 xb2 p))))<BR> (cond ((>= sst p)<BR> (setq xb1 (- ast pi))<BR> (setq xb2 (- pi sst))<BR> (setq xb (- (* pi 2.0) xb1 xb2))))<BR> (cond ((>= sst pi)<BR> (setq xb1 (- g ast))<BR> (setq xb2 (- sst pi))<BR> (setq xb (+ g xb1 xb2))))<BR> (cond ((> sst g)<BR> (setq xb1 (- sst pi))<BR> (setq xb2 (- g ast))<BR> (setq xb (+ xb1 xb2 g))))<BR> ))<BR> (cond ((< ast sst)<BR> (setq xb (- sst ast))))<BR> ))))<BR> (cond ((>= ast g)<BR> (cond ((< ast (* pi 2.0))<BR> (cond ((> ast sst)<BR> (cond ((>= sst g)<BR> (setq xb1 sst)<BR> (setq xb2 (- (* pi 2.0)ast))<BR> (setq xb (+ xb1 xb2))))<BR> (cond ((< sst g)<BR> (setq xb1 (- sst g))<BR> (setq xb2 (- (* pi 2.0)ast))<BR> (setq xb (+ g xb1 xb2))))<BR> ))<BR> (cond ((< ast sst)<BR> (setq xb (- sst ast))))<BR> ))))<BR> (setq ad (* beed xb))<BR> (cond ((= i 0)<BR> (setq cad ad)))<BR> (cond ((>= i 1)<BR> (setq cad (+ ad cad))))<BR> ))<BR> (setq i (+ 1 i)))<BR> (setq aaad (+ aad bad cad))<BR> (setq ai aaad)<BR> (setq aai (rtos ai 2 4))<BR> (setq abi "<")<BR> (setq aci ">")<BR> (setq adi "线段总长为:")<BR> (princ (strcat adi abi aai aci))<BR> (command "pickbox" 3)<BR> (princ)<BR> )<BR> <BR> <BR> <BR> <BR> 回帖是一种美德!感谢楼主的无私分享 谢谢我需要意见!
如果这个程式好的话,请大家给我留一下言,不好就请大家给我提一下意见,好让我有所改进,如果大家都看不提意见,我会很失望的,从某些方面讲,明经就是需要大家的意见,这样网站才会有人气,才会兴望,只有不断的交流,大家的知识才会进步,不错,全部用ALISP写,而没有用到VLISP的函数
但不是对所有的线有效,如样条曲线、多段线、优化多段线等。这里有一个贴子你看看吧:
http://www.mjtd.com/bbs/dispbbs.asp?boardID=3&RootID=16564&ID=16564
是计算任意曲线的长度,刚好可以补充实用函数栏目中所缺少的内容。