When creating cogo points, use a specific surface to assign the elevation

[doni49]

NEVER MIND.  I just found that it's currently already possible -- just not using the method I was expecting.

When creating new cogo points, there is an option to assign elevations manually (type the elevation for each point), automatically (using the same pre-specified elevation for each point) or not at all (no elevation assigned).  I'd like the option to choose a source surface to automatically assign the elevation.

[joantopo]

There are a lot of things in Civil 3D that should have an "active" or "current" value just how layers works (current layer...).

This concept is very extended in OpenRoads. They have the active surface, active style....... so when you call a command that it needs an elevation from a surface you are safe and calm about from which surface will it be taken.

This is one of the reasons why I like ORD.  In the task bar, you see the name of the "active" element.

[TodoTerrenoCad]

"Hi doni49. I saw you found the native 'Elevations from Surface' tool for points. That definitely helps!

Just wanted to add a quick tip: Most of the time, we need those elevated points just so we can snap to them and draw 3D linework (like boundaries, paths, or breaklines). Doing that point-by-point is still pretty slow.

If your end goal is actually getting 3D linework mapped to that surface, I developed a native tool that skips the point-creation step entirely. It’s a command called TTC_POLY-ON-SURFACE. You just draw a normal flat 2D polyline where you need it, and the tool instantly drapes the entire line onto the surface, automatically extracting the exact elevations for every vertex.

I published it inside the Todo Terreno CAD Suite on the Autodesk App Store. It has a 1-month free trial, so you can check it out if you want to skip creating dummy points and go straight to 3D linework. Cheers!"