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

import bpy
from numpy import (sum, dot, inf, log, sin, cos, pi,
                   arccos, arctan2, floor, sqrt, trunc,
                   )
from mathutils import Vector, Matrix
import bmesh
from bpy import context

PHI = (1 + sqrt(5)) / 2 # golden ratio

batFINGER

bl_info = {
    "name": "Mercator Project",
    "author": "batFINGER",
    "version": (1, 0),
    "blender": (2, 79, 0),
    "location": "View3D > Mesh > UV UnWrap > Mercator Project",
    "description": "UV Mercator Projection",
    "warning": "",
    "wiki_url": "",
    "category": "UV",