Curve to Arc Directly

Can I change Splited Curves of ellipse to Arcs

No need to split (but you can just as well) - Curve.ApproximateWithLineAndArcSegments should work.

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Thank You Sir.
I want to ask some more


This one is first I draw ellipse with detail line and draw Wall by pick line
As you see number of wall is 2


This one is drawn with dynamo by using above ellipse


As you see number of wall is 240
Can I draw with only 2 walls with dynamo like by pick line ?
I have to make walls for Ellipse shape multi-storey and twisted
So I can’t copy. Wall outline must be same as ellipse
Painting to 240 walls isn’t OK and make my PC lag.

And different in Rendering is so big

Once you convert to the Dynamo geometry you lose parts of the curve definition which Revit needs to drive the wall creation. I am 90% sure that those parts can be maintained, but you’ll need to write some custom code for it.

Since you have the ellipses, why not generate form instead? From there you can automate wall (and floor, roof, etc.) creation based on the form. This is more closely aligned to how you’d likely best model the twisting ellipse building in Revit by hand, which usually means better results in the Automation.

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I made ellipses with dynamo and controlled angle rotation and 56 Storey
so please consider some solutions for this if you have time .
Thank you so much for your attention and solutions for me Sir.

My solution would be to take the solids generated by the ellipse and generate a mass. From the mass creating walls becomes quite simple.

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