Hello!
My goal is to have a line tracing a landscape to show a route through a terrain.
Here is where I am at: https://imgur.com/NrHxUBf
That setup shows a spline with a sweep nurbs that has a dirt shader applied to it so it's intersection with the landscape makes a glowing line. This is ALMOST exactly what I want, but on the tight bends in the spline make the dirt shader start affecting other parts of the swept rectangle object besides just the intersection.
Here is my material setup: https://imgur.com/WEcZ9GH
I tried to use a Boole, but there is too much geometry and this is just a test for an even larger example so procedural/material based is ideal.
Any advice for how to do accomplish this?