Retrieve topo contour lines and smooth curves

Revit
1

Hello community,

We would like to be able to smooth topography contour lines, similar to the smooth modifier we can find on any modelling software.

We have seen a couple of workflows like the ones in the links below.

[https://landarchbim.com/2016/01/20/toposurface-to-nurbssurface/]
https://www.youtube.com/watch?v=yxSCRXmN9hM

Is it possible to retrieve topo contour lines without creating the physical intersection with a number of planes, just read these curves?

Then once we get the curves and create nurbs, is it possible to divide a nurb curve?

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2

You can access lines drawn by Revit trough API - see https://www.revitapidocs.com/2020/d8a55a5b-2a69-d5ab-3e1f-6cf1ee43c8ec.htm. There’s no need to create slices.

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You can divide Nurbs:
https://dictionary.dynamobim.com/#/Geometry/Curve/Action/PointAtParameter

1 Like
3

Thanks guys,

Contour lines can be retrieved using Element.Geometry

Then we can smooth curves using PolyCurve.Fillet

4

Hello,

Could You please post a screenshot of the node pipeline You used?

Thank You in advance!