Point's X and Y coordinates are on a surface?

Civil3D
1

Are there any nodes which can tell you if a point’s x and y coordinates are shared by a surface?
I’m copying a surface spot elevation to a grid based on the surface’s max/min x and y coordinates, but I would like to remove the points that are not over the surface:

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2

You could use Surface.ElevationByXY, which would give a null if a point is off the surface. Then you could use List.FilterByBoolMask or List.Clean from there.

3 Likes
3

Actually ended up using the IsNull node, and a bool filter. Worked like a charm. Thank you!