请问大家快速选择首尾相连的所有线段，如何用lisp实现啊
请问大家快速选择首尾相连的所有线段，如何用lisp实现啊？需要选择任何一条线段，都可以吧整个N条线段全部选择
lisp如何编写？
拜托大家帮我编写一个lsp！！
ET工具有一个
FASTSEL.LSP
;;; Created 7/21/97 by Randy Kintzley
;;; Copyright ?1999 by Autodesk, Inc.
;;;
;;; Your use of this software is governed by the terms and conditions of the
;;; License Agreement you accepted prior to installation of this software.
;;; Please note that pursuant to the License Agreement for this software,
;;; "opying of this computer program or its documentation except as
;;; permitted by this License is copyright infringement under the laws of
;;; your country.If you copy this computer program without permission of
;;; Autodesk, you are violating the law."
;;;
;;; AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
;;; AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
;;; MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE.AUTODESK, INC.
;;; DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
;;; UNINTERRUPTED OR ERROR FREE.
;;;
;;; Use, duplication, or disclosure by the U.S. Government is subject to
;;; restrictions set forth in FAR 52.227-19 (Commercial Computer
;;; Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
;;; (Rights in Technical Data and Computer Software), as applicable.
;;;
;;;----------------------------------------------------------------
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defun c:fastsel ( / old_err ss ss2 n na )
(setq old_err *error*)
(defun *error* ( a / )
(princ a)
(setq *error* old_err)
(princ)
);defun
(fsmode_init)
(princ "\n使用 'FSMODE 以控制链选择。")
(princ (strcat "\nFSMODE = " #fsmode))
(setq ss2 (fs_get_current_sel)
ss (fastsel)
);setq
(if (and ss
(princ (strcat (itoa (sslength ss))
" 个对象被找到。"
)
)
(not (equal (getvar "cmdnames") ""))
);and
(command ss);then pass in the selection set
(progn
(if (and ss
(equal 1 (getvar "pickfirst"))
);and
(progn
(if (not ss2)
(setq ss2 ss)
(progn
(setq n 0)
(repeat (sslength ss)
(setq na (ssname ss n));setq
(if (not (ssmemb na ss2))
(setq ss2 (ssadd na ss2))
);if
(setq n (+ n 1));setq
);repeat
);progn then combine the previously gripped stuff with
;the selection set returned from fastsel
);if
(sssetfirst ss2 ss2)
);progn else just set a grip-ed selection set.
(princ "\n没有找到")
);if
);progn else
);if
(setq *error* old_err)
(princ "\n现存的快速选择")
(princ)
);defun c:fastsel
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defun c:fs ()
(c:fastsel)
);defun c:fs
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defun c:fsmode ( / old_err fsmode )
(setq old_err *error*)
(defun *error* ( a / )
(princ a)
(setq *error* old_err)
(princ)
);defun
(fsmode_init)
(initget "ON OFf")
(if (setq fsmode (getkword (strcat "\nFASTSEL链选择 <" #fsmode ">: ")));setq
(progn
(setq #fsmode (xstrcase fsmode))
(setenv "BNS_FSMODE" #fsmode)
);progn then
);if
(setq *error* old_err)
(princ)
);defun c:fsmode
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defun fsmode_init ()
(if (not #fsmode)
(setq #fsmode (getenv "BNS_FSMODE"))
);if
(if (and (not (equal "ON" #fsmode))
(not (equal "OFF" #fsmode))
);and
(progn
(setq #fsmode "OFF");setq
(setenv "BNS_FSMODE" #fsmode)
);progn then
);if
);defun fsmode_init
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defun fastsel ( / flt na fsmode lst2 ss px px2 z j lst a b lst3 lst4
n c d ss2 ss4 ss5
)
(setq flt '(
(0 . "LINE") (0 . "POLYLINE") (0 . "LWPOLYLINE") (0 . "CIRCLE")
(0 . "ARC") (0 . "ATTDEF") (0 . "TEXT") (0 . "MTEXT")
(0 . "ELLIPSE") (0 . "IMAGE") (0 . "SPLINE") (0 . "POINT")
(0 . "INSERT") (0 . "3DFACE") (0 . "TRACE") (0 . "SOLID")
)
na (bns_fast_sel "\n选择接触的对象: " flt)
flt (append '((-4 . "<OR")) flt '((-4 . "OR>")))
fsmode "ON"
);setq
(if na
(progn
(setqlst2 (list na)
ss (ssadd na (ssadd))
px (acet-geom-pixel-unit)
px2 (* px 0.75)
z 0
j 0
);setq
(while (and (< j (length lst2))
(equal fsmode "ON")
);and
(setq fsmode #fsmode)
(setq na (nth j lst2));setq
(setqlst (acet-list-remove-adjacent-dups (acet-geom-object-point-list na (/ px 2.0)))
a (car lst)
b (cadr lst)
);setq
(if b
(setq lst3 (list (polar a (+ (angle b a) (/ pi 2.0)) px2));list
lst4 (list (polar a (- (angle b a) (/ pi 2.0)) px2));list
);setq then
);if
(setq n 0)
(repeat (max 0 (- (length lst) 1))
(setq a (nth n lst)
b (nth (+ n 1) lst)
c (polar b (- (angle a b) (/ pi 2.0)) px2)
d (polar b (+ (angle a b) (/ pi 2.0)) px2)
);setq
(if (not (equal c (last lst3) 0.00001))
(setq lst3 (append lst3 (list c)));setq then
);if
(if (not (equal d (last lst4) 0.00001))
(setq lst4 (append lst4 (list d)));setq then
);if
(setq n (+ n 1));setq
);repeat
(setq ss2 (f_on_screen lst flt))
(setq ss4 (f_on_screen lst3 flt))
(setq ss5 (f_on_screen lst4 flt))
(if ss2
(progn
(setq n 0)
(repeat (sslength ss2)
(setq na (ssname ss2 n))
(if (not (member na lst2))
(setq lst2 (append lst2 (list na))
ss (ssadd na ss)
);setq
);if
(setq n (+ n 1));setq
);repeat
);progn
);if
(if ss4
(progn
(setq n 0)
(repeat (sslength ss4)
(setq na (ssname ss4 n))
(if (not (member na lst2))
(progn
(setq lst2 (append lst2 (list na))
ss (ssadd na ss)
);setq
);progn then
);if
(setq n (+ n 1));setq
);repeat
);progn
);if
(if ss5
(progn
(setq n 0)
(repeat (sslength ss5)
(setq na (ssname ss5 n))
(if (not (member na lst2))
(progn
(setq lst2 (append lst2 (list na))
ss (ssadd na ss)
);setq
);progn then
);if
(setq n (+ n 1));setq
);repeat
);progn
);if
(setq j (+ j 1))
);while
);progn then
);if
ss
);defun fastsel
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;select the seed ent.
(defun bns_fast_sel ( msg flt / filter_check na)
;local function
(defun filter_check ( na flt / e1 a n flag)
(cond
((not na) (setq flag nil))
((not flt) (setq flag T))
(T
(setq e1 (entget na));setq
(setq n 0)
(while (and (not flag)
(< n (length flt))
);and
(setq a (nth n flt));setq
(if (member a e1)
(setq flag T);setq then got a match for the filter
);if
(setq n (+ n 1));setq
);while
)
);cond close
flag
);defun filter_check
(if (not (equal (substr msg 1 1) "\n"))
(setq msg (strcat "\n" msg))
);if
(while (not na)
(setvar "errno" 0)
(while (or (and (not (setq na (car (entsel msg))))
(equal 7 (getvar "errno"))
);and
(and na
(not (filter_check na flt))
);and
);or
(if (equal 7 (getvar "errno"))
(princ "\n0 found")
(progn
(if na
(princ (strcat "\n*无效* 必须选择 "
"直线、多段线、圆、圆弧、属性定义、文字、"
"多行文字、椭圆、椭圆弧、或图像对象。\n"
);strcat
);princ
);if
);progn
);if
(setvar "errno" 0)
);while
(cond
((equal (getvar "errno") 52) ;enter
(setq na 99);
)
);cond close
);while
(if (equal na 99) (setq na nil))
na
);defun bns_fast_sel
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defun fs_get_current_sel ( / ss)
(if (and (equal 1 (getvar "pickfirst"))
(cadr (ssgetfirst))
);and
(setq ss (cadr (ssgetfirst)));then something is already selected so get it.
);if
ss
);defun fs_get_current_sel
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;returns a list of points on screen if the first two lists do not
;contain segments that intersect each other.
;
(defun f_on_screen ( lst flt / vd p1 p2 p3 p4 lst2 lst3 n a b c d
x1 x2 x3 x4 pnt j ss ss2 na pnt2 dst dlst
)
(setqvd (trans (getvar "viewdir") 1 0 T)
p1 (acet-geom-m-trans (acet-geom-view-points) 1 vd) ;variables p1, p2, p3, andp4 are corner points
p3 (cadr p1) ; of the current view
p1 (car p1)
p2 (list (car p3) (cadr p1));list
p4 (list (car p1) (cadr p3));list
dst (distance (getvar "extmin") (getvar "extmax"))
lst (acet-geom-m-trans lst 1 vd)
a (car lst) ;the first point in lst expressed in view coords.
c (list (car a) (cadr a))
);setq
(if (and (<= (car c) (car p3)) ;if the first point is on screen then add it to lst2
(<= (cadr c) (cadr p3))
(>= (car c) (car p1))
(>= (cadr c) (cadr p1))
);and
(setq lst2 (list a));setq
);if
(setq n 0)
(repeat (max (- (length lst) 1)
0
)
(setqa (nth n lst) ;the first point
c (list (car a) (cadr a)) ;the same point without the z
b (nth (+ n 1) lst) ;the second point
d (list (car b) (cadr b)) ;ditto with no z
x1 (inters p1 p2 c d) ;check for intersections
x2 (inters p2 p3 c d)
x3 (inters p3 p4 c d)
x4 (inters p4 p1 c d)
);setq
(if (or x1 x2 x3 x4)
(progn ;then intersection(s) were found
(setq dlst nil) ;Now build a list of sublist containing the
;the distance from the intersecting point to point 'a'
; and 'a' the point it's self.
(if x1
(setq dlst (append dlst (list (list (distance x1 c) x1))));setq
);if
(if x2
(setq dlst (append dlst (list (list (distance x2 c) x2))));setq
);if
(if x3
(setq dlst (append dlst (list (list (distance x3 c) x3))));setq
);if
(if x4
(setq dlst (append dlst (list (list (distance x4 c) x4))));setq
);if
(setq dlst (acet-list-isort dlst 0)) ;sort the list of sublists based on distance from 'a'
(setq j 0)
(repeat (length dlst) ;then add them one at a time to lst2
(setq pnt (nth j dlst) ;the sub-list (dist, point)
pnt (cadr pnt) ;the point
pnt (list (car pnt) (cadr pnt) (* -1.0 dst));now get ready to create a segment
pnt2 (list (car pnt) (cadr pnt) dst) ;that is normal to the view and very long
pnt (inters a b pnt pnt2 nil) ;check for 3d intersect to get true
;location
);setq
(if (and pnt
(not (equal pnt (last lst2)))
);and
(setq lst2 (append lst2 (list pnt)));setq
);if
(setq j (+ j 1));setq
);repeat
);progn then find the intersection closest to a
(setq dlst nil);else no intersections
);if
(if (and (<= (car d) (car p3))
(<= (cadr d) (cadr p3))
(>= (car d) (car p1))
(>= (cadr d) (cadr p1))
(not (equal b (last lst2)))
);and
(setq lst2 (append lst2 (list b)));setq then
);if
(if dlst
(progn
(setq lst2 (acet-geom-m-trans lst2 vd 1)
lst3 (append lst3 (list lst2))
lst2 nil
);setq
(if (and (<= (car d) (car p3))
(<= (cadr d) (cadr p3))
(>= (car d) (car p1))
(>= (cadr d) (cadr p1))
(not (equal b (last lst2)))
);and
(setq lst2 (append lst2 (list b)));setq then
);if
);progn then
);if
(setq n (+ n 1));setq
);repeat
(if (and lst2
(setq lst2 (acet-geom-m-trans lst2 vd 1))
(not (member lst2 lst3))
);and
(setq lst3 (append lst3 (list lst2)));setq then
);if
(setq ss2 (ssadd))
(setq n 0)
(repeat (length lst3)
(if (and (> (length (nth n lst3)) 1)
(setq ss (ssget "_f" (nth n lst3) flt));setq
);and
(progn
(setq j 0)
(repeat (sslength ss)
(setq na (ssname ss j))
(if (not (ssmemb na ss2))
(setq ss2 (ssadd na ss2));setq then
);if
(setq j (+ j 1));setq
);repeat
);progn
);if
(setq n (+ n 1));setq
);repeat
ss2
);defun f_on_screen
(princ)
谢谢楼上大哥！！请问如何使用，我的意思是点选一条直线，与它相连（和相连后的直线的的相连直线）所有直线全部选择上。就是递归相连的所有直线。不知我这样解释明白不？ crazylsp 发表于 2013-10-22 17:10 static/image/common/back.gif
ET工具有一个
FASTSEL.LSP
;;; Created 7/21/97 by Randy Kintzley
谢谢楼上大哥！！请问如何使用，我的意思是点选一条直线，与它相连（和相连后的直线的的相连直线）所有直线全部选择上。就是递归相连的所有直线。不知我这样解释明白不？ 本帖最后由 crazylsp 于 2013-10-22 17:41 编辑
就是你的意思，拾取一个获取相连的所有直线。加载所有fas文件，加载fastsel.lsp文件，都是ET里面的工具，我只是把这个提出来了。 crazylsp 发表于 2013-10-22 17:39 static/image/common/back.gif
就是你的意思，拾取一个获取相连的所有直线。加载所有fas文件，加载fastsel.lsp文件，都是ET里面的工具，我 ...
大哥谢谢了，我下载了试下，只能选首尾相连的两条，不能递归选下去啊。我的意思是选了1后可以自动选上2345678的
如果真的是首尾相连的直线，多段线，用命令pe 选择一条线，转为多段线后，输入j 接着输入all就能全选所有线，直接连接。
edata 发表于 2013-10-22 20:51 static/image/common/back.gif
如果真的是首尾相连的直线，多段线，用命令pe 选择一条线，转为多段线后，输入j 接着输入all就能全选所有线 ...
不行的，这样只能用1选时只能选到234567，选不到8的，有分支是选不到的 chwnin 发表于 2013-10-22 20:57 static/image/common/back.gif
不行的，这样只能用1选时只能选到234567，选不到8的，有分支是选不到的
8算不上首尾相连了。只能算有同一点，你最好将你要实现的功能图解，提供源dwg，对于你说的8，如果是pl线，是要画两次的。 edata 发表于 2013-10-22 21:35 static/image/common/back.gif
8算不上首尾相连了。只能算有同一点，你最好将你要实现的功能图解，提供源dwg，对于你说的8，如果是pl线， ...
当选择PL线1时，PL线2、3、4、5、6、7能同时选择到。因为我导出的图有几百条多段线，一条条选相连的线太麻烦了，所以要找个快捷的方法，就象这个GIF一样，不过是要多段线 。大哥有办法吗？
http://bbs.mjtd.com/forum.php?mod=attachment&aid=NTg4ODh8ZGRjOGRkYTR8MTM4MjQ1MDI3N3w0MjQ1MzJ8ODY5MTc%3D&noupdate=yes
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