help! select lines with the same start (or end) point)

I need some help with this.

I have a list of lines that forms triangles and i want to create a reciprocal structure with telescopic pipes but as you see in the pictures two segments starts at the same point. Mi cuestion is How can i flip or rotate one of the two segments to have a reciprocal triangle? I'll appreciate any help Thanks!

What i have now

What i want

Attachments:

trianfular.gh, 12 KB

Replies to This Discussion

Permalink Reply by ng5 Alex on January 26, 2016 at 8:40am

Hello Hugo,

one way could be to arrange the three points according to a incircle curve of the triangle. that way you can have sequentially your points. Components to use InCircle, found in tab curves/primitive and SortAlongCurve found in tab Vector/point.

best

alex

Permalink Reply by ng5 Alex on January 26, 2016 at 8:47am

Rereading my post, i thought i might add, that with the suggested method, you don't need to check which curves need flip, because with the order points your polylines segments will have same "direction".

Permalink Reply by Hugo on January 26, 2016 at 9:15am

Thanks alex for your ideas i finally resolved with daniel's method, i had all the vertices in a flatten list so i couldn't use incircle.

In any case, Thank you very much. Hugo

Permalink Reply by Daniel González Abalde on January 26, 2016 at 8:52am

I think that it should be sufficient with:
> Join the lines in a polyline/triangle,
> Extract points of triangle,
> Create a new polyline with those points,
> Explode new polyline into three segments.

Permalink Reply by Hugo on January 26, 2016 at 9:09am

Hi daniel!

Your method works! thank you very much! Sometimes easiest problems are the worst to solve.

Permalink Reply by Joseph Oster on January 26, 2016 at 9:11am