Blenderで二本のエッジの交点に点を追加する（Python） 2.79,2.8両対応

import bmesh
import bpy
from mathutils import geometry

# get cross point of 2 edges
def calc_cross_coordinate(edge2):


    if len(edge2) == 2:
        [[v1, v2], [v3, v4]] = [[v.co for v in e.verts] for e in edge2]

        iv = geometry.intersect_line_line(v1, v2, v3, v4)
        iv = (iv[0] + iv[1]) / 2
        return iv
    
# subdivide 2 edges and move the points to cross point
def subdivide_selects(edge2, moveto):
    obj = bpy.context.object
    me = obj.data
    bm = bmesh.from_edit_mesh(me)

    ret = bmesh.ops.subdivide_edges(bm,
        edges=edge2,
        use_grid_fill=True,
        cuts=1)
    bmesh.update_edit_mesh(me)

    for i in ret['geom_split']:
        if type(i) == bmesh.types.BMVert:
            i.co=moveto

def cross_subdivide():
    obj = bpy.context.object
    me = obj.data
    bm = bmesh.from_edit_mesh(me)

    edge2 = [e for e in bm.edges if e.select]
    if len(edge2) == 2:
        pos = calc_cross_coordinate(edge2)
        subdivide_selects(edge2,pos)
    
cross_subdivide()