Trim then join polylines LISP?!! Help.

[fourty9ers4life]

I've been looking to download a lisp that can trim (TR) and the (PE, join) polylines. two at a time or multiple... I've tried writing the lisp routine but I cannot do it correctly.. Anyone out there know of a good lisp routine? Also, if there's one to trim & fillet w/a radius.. Hopefully there's two different routines but if there's one then even better...

[Kent1Cooper]

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@fourty9ers4life wrote:

I've been looking to download a lisp that can trim (TR) and the (PE, join) polylines. two at a time or multiple... I've tried writing the lisp routine but I cannot do it correctly.. Anyone out there know of a good lisp routine? Also, if there's one to trim & fillet w/a radius.. Hopefully there's two different routines but if there's one then even better...

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If I understand what you're trying to do, doesn't ordinary Fillet do that?  [It may be version-dependent.]  If you're not talking about trimming Polylines using each other as cutting boundaries, and then joining the results, an image or drawing showing before and after conditions would help.

[fourty9ers4life]

Yes, I guess I'm actually looking for fillet plus "unlimited trim then join"... I use fillet it a lot, but instead of doing 10 times for a shape, I would like to use one command to fillet & join multiple lines/pl's/arcs etc....

[3wood]

You can also quickly create a new polyline inside with BPOLY and erase old lines/arcs

[Kent1Cooper]

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@fourty9ers4life wrote:

Yes, I guess I'm actually looking for fillet plus "unlimited trim then join"... I use fillet it a lot, but instead of doing 10 times for a shape, I would like to use one command to fillet & join multiple lines/pl's/arcs etc....

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Ahhh, Arcs....  That's going to kill the option of doing it with Fillet, anyway, since unfortunately you can't Fillet a Polyline with an Arc, nor until recent versions a Polyline arc segment with a Line or other Polyline.

[Kent1Cooper]

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@fourty9ers4life wrote:

...I'm actually looking for fillet plus "unlimited trim then join"... I use fillet it a lot, but instead of doing 10 times for a shape, I would like to use one command to fillet & join multiple lines/pl's/arcs etc....

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If all the component parts always extend beyond their intersections with other components, without also crossing something else outside the desired shape, I can imagine a way to do it --  select objects, make a list of all their start and end points, use Trim with all of them as the cutting boundaries and all of those start and end points as what-to-trim-off points, and then Pedit to join them all together.  If not [e.g. some components may already meet at their ends and not need Trimming], I think it it would get a lot more complicated, but might still be possible.

[fourty9ers4life]

I use Bpoly a lot as well... There's just a lot of times where this lisp would come in handy..