arrow_as_script_node.py

def sv_main(height=1.0, tail_len=0.5, tail_width=0.2, head_len=1.0):

    in_sockets = [
        ['s', 'height', height],
        ['s', 'tail_len', tail_len],
        ['s', 'tail_width', tail_width],
        ['s', 'head_len', head_len]]

    a = head_len
    b = height/2
    c = tail_width/2
    d = tail_len
   
    verts = []
    add_vert = lambda x, y: verts.append((x, y, 0))

    full_arrow = [
        [a,0],[0,b],[0,c],[-d,c],[-d,-c],[0,-c],[0,-b]]

    if 0.0 in (tail_width, tail_len):
        full_arrow = [[a,0],[0,b],[0,-b]]
        faces = [[0,1,2]]
    else:
        faces = [[0,6,1],[2,3,4,5]]        
    
    for xy in full_arrow:
        add_vert(*xy)        

    out_sockets = [
        ['v', 'Verts', [verts]],
        ['s', 'Faces', [faces]]
    ]

    return in_sockets, out_sockets

Another great example. Elegant Python and Sverchok code.

Thanks so much Zeffii!

Wishlist:

1. Arrow Segment
2. Arrow Generation Variations, via List