How does the TopoSurface works?

[cheahjunyao1998]

Hi all, I'm new to Revit API. I want to know how the TopoSurface points are connecting to one another. Currently, I'm trying to create a rectangular enclosed solid TopoSurface with a list of points. The points will be forming a rectangular shape just as the wireframe image showed. However, there are some of the points are not connected and the TopoSurface created does not form a rectangular solid. Anyone can help me with this or any advice can be given? Thank you for any help you can offer.

[jeremy_tammik]

Welcome to the Revit API!

The TopographySurface class represents a topographical surface:

https://www.revitapidocs.com/2022/64242f41-69e1-84be-f21b-84783e81364a.htm

So, it is a surface, not a solid.

And, so, it represents topography, not things like a cube:

https://en.wikipedia.org/wiki/Topography

Therefore, I am sorry to say that your question makes little sense to me.