I want to use Dynamo to create a floor by selecting the surrounding beams. I’ve already extracted the beam center lines, but I don’t know how to create a closed PolyCurve from these center lines (because in the Floor.ByOutlineTypeAndLevel node, the outline must be a polycurve). Please help me creat…

PolyCurve.ByJoinedCurves (node). And a Line is a Curve AFAIK.

But my lines do not form a closed loop as shown in the picture. [buildSlab_2025-11-26_02-20-29]

I can't use node PolyCurve.ByJoinedCurves. Please help me! [1]

[image] hoangdv2304FBFY: But my lines do not form a closed loop as shown in the picture. That’s a different issue. Also it is important that you give all necessary information you can :wink:. I guess you need to create lines (Curves) from and to the points where the lines intersect (first)…

Yes. It will work when it is a closed path. please show me how to create intersection points, then from those intersection points can create a PolyCurves. Please help me!!

[image] [image] sovitek: but many ways it can be done… This is why i like others chip in as well. I didn’t know that node :grinning_face_with_smiling_eyes:. @hoangdv2304FBFY ChatGPT can put you in the right direction if you have trouble finding a topic related to your question on the for…

great node, and if remember, its just build with ootb nodes, so just open the node and see how it can be done…great for learning :wink: :wink:

and another could maybe be intersect the beams solid intersect in a plane and get the inner perimeter curves from that surface the intersect gives

thank you very much. i did it. but when i create a floor, after doing it again in another position the newly created floor disappears and is replaced by a new floor. it doesn’t save the previously created floor.

I want to use Dynamo to create a floor by selecting the beams that surround it! plaese help!

Revit

sovitek November 26, 2025, 7:53am 7

a fast an easy way could be [&] PolyCurve.ClosedLoopsFromCurves from ampersand package, but many ways it can be done…

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I want to use Dynamo to create a floor by selecting the beams that surround it! plaese help!

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