batFINGER

import bpy
from bpy import context
from mathutils import Vector
import bmesh

up = Vector((0, 0, 1)) # z axis
north = Vector((0, 1, 0)) # y axis

def stroke(bm, v, n, w):
    v1 = bm.verts.new(v + w / 2 * n)

batFINGER

bl_info = {
    "name": "Set mesh origin to selected geometry",
    "author": "batFINGER",
    "version": (1, 0),
    "blender": (2, 80, 0),
    "description": "Set mesh origin to selected geometry",
    "warning": "",
    "wiki_url": "",
    "category": "Add Mesh",
}

batFINGER

bl_info = {
    "name": "Spiral Mesh",
    "author": "batFINGER",
    "version": (1, 0),
    "blender": (2, 80, 0),
    "location": "View3D > Add > Mesh > Spiral Mesh",
    "description": "Adds a Spiral Thingy",
    "warning": "",
    "wiki_url": "",
    "category": "Add Mesh",