Handle texture

Hello, everyone. For a university project I would like to apply this texture to this handle. I wanted to see if anyone can help me do this with grasshopper, even though I have never used it :'). I attach the 3d file of the handle and as you can see i have drawn the lines of how i would need the texture. At the front and end of the handle, the texture should fade.
thank you very much.
texture.rar (13.1 MB)

this is not easy to do in gh especially with a polysurface like that. I’d pull curves or project the 2d ones to the surface, then build some simple section curves, that you rebuild to either degree 2 or 3, and build the surfaces manually. Attached is a quick and far from perfect attempt to give you an idea.

texture-sg.3dm (1.8 MB)