I am very new to Rhino and this is my first time drawing curves on a 3D mesh in Rhino. I have a 3D mesh model, 2D transportation road, and 2D river in different layers.
My question is how can I project those 2D lines to the 3D mesh model? (I had tried the “project” command but it doesn’t work.)
Are there any ways to draw those curves (road and river) on the 3D mesh easily? or maybe do it in Grasshopper?