Position along Curve of Point?

Is there any way to get the Position a Point is along a Curve?

Especially when the Curve is converted to a Mesh

Field at Index node.

EDIT
Whoops I mean like this

image

Hope that helps

hum, what you mean exactly ?

for position the position node will give you the position in 3D space regardless if it’s from a curve or a mesh, but it’s probably not what you want…

The spline parameter node / length or factor will give you were that point is on the curve , if it’s near the start or the end if you like, but while it’s a positional information it’s not exactly a position.
This is probably what you’re looking for, but … once the curve is converted to a mesh that information is lost, that’s why you might need to use a capture attribute node , or store named attribute when the curve is still a curve,

Hope that helps, feel free to ask further questions if that 's not enough…

As an example of the sort of thing I’m trying to do is to have one curve follow another with an offset so it’s not occupying the same space but a distance from it, like in the image. However for every curve on any points (mesh or not) will do the same.

Screenshot 2023-11-25 210101