I have a DXF file which is a 2D file (all lines are on one layer), and I have a 3D terrain model.
I'd like to cast these lines on terrain (to keep X,Y axis, and stretch with Z axis automatically). I can't find any fast way to do it. I know I can adjust every vertex manually, but It is almost impossible with few thousands hektares.
I attach 2 images to show my problem