plastica.py

from mathutils import Vector, Euler

def sv_main(verts=[], indices=[], translate=[]):

    in_sockets = [
        ['v', 'verts', verts],
        ['s', 'indices', indices],
        ['v', 'translate', translate]]

    out_sockets = [
        ['v', 'Verts', [verts]]
    ]
    
    if not verts:
        return in_sockets, out_sockets

    # yes, ugly..
    if indices and translate:
        if indices[0] and len(indices[0][0]) > 0:
            if translate[0] and len(translate[0][0]) > 0:
                indices = indices[0][0]
                translate = translate[0][0]
        else:
            return in_sockets, out_sockets

    # reaches here only if conditions are met.
    v_out = []
    for idx, v in enumerate(verts[0]):
        print(idx)
        if idx in indices:
            print('in indices')
            v = Vector(v) + Vector(translate)
            v = v[:]
        v_out.append(v)

    out_sockets[0][2] = [v_out]
    return in_sockets, out_sockets