If I draw a Arrow3, it does not really look 3D-ish because the line is not shaded like a cylinder. How do I change this? Probably drawing the cylinder and arrow head manually together? How?
Here is a MWE that shows the arrow that does not yet have a cylinder part:
size(700); import solids; import texcolors; import three; currentprojection=orthographic ( camera=(8,4,4), up=(0,0,1), target=(2,2,2), zoom=0.8 ); // save predefined 2D orientation vectors pair NN=N; pair SS=S; pair EE=E; pair WW=W; draw((1.3094,0,2.26599)--(3.3094,0,4.26599),(7bp)+green,Arrow3(size=30bp));