HELP

Hello
I'm a beginner in AutoLISP and need help with a pronlem

; i want to make a selection of lines SEL
(setq SEL (ssget))
; with LEN number of elements
(setq LEN (sslength SEL))
; then how can i give each element in the selection
; different name in a while loop automaticly
(setq i 0)
(while (< i LEN)
(setq ENT (ssname SEL i))
…………
)
; i want the first line of the selection to be ENT1
; the second -> ENT2 and so on
; How to include the counter i in the variable name?

THANKS

 

Hi Petur

I don't know why you wanna bind the entities to variables, there are more
elegant solutions to work with selection sets.

Anyway, you can do it like this:

Code:

(setq SEL (ssget))
; with LEN number of elements
(setq LEN (sslength SEL))
; then how can i give each element in the selection
; different name in a while loop automaticly
(setq i 0)
(repeat LEN
(set (read (strcat "ENT" (itoa i))) (ssname SEL i))
(setq i (1+ i))
)

Cheers

 

I agree with Jürg - and the oft-repeated suggestion to post your code here would
assit folks in helping you. Also, if you want to select _only_ lines, you can
make it easier by using (setq SEL (ssget '((0 . "LINE")))), which will allow you
to pick by crossing window, automagically filtering out everything crossing the
window that isn't a line. Note also that you can refine the selection further
by picking (for instance) only lines that are on a certain layer: (setq SEL
(ssget '((0 . "LINE")(8 . "YourLayerName")))).

 

Thanks
That's exactly what i was looking for
I'm trying to make a program for tubes
Selecting lines it makes fillets and draws 3D tubes
giving the correct length and ability to be manipulated

but i'm not very good in autoLISP so i'm struggling
Anyway
Thank you again

 

There's probably a simpler and more efficient way of accomplishing what you're trying to do. That said, the topic of creating variables on the fly has been covered already. Try, for example:

http://discussion.autodesk.com/thread.jspa?messageID=1162889
http://discussion.autodesk.com/thread.jspa?messageID=1116922
http://discussion.autodesk.com/thread.jspa?messageID=1183846

 

Just sth else
Creating variabble names like that (stcat "ENT" (itoa i))
is there a way to make those variables local?
if i don't know the final value of i