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  • '''
    BEGIN GPL LICENSE BLOCK
    
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License
    as published by the Free Software Foundation; either version 2
    of the License, or (at your option) any later version.
    
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.    See the
    GNU General Public License for more details.
    
    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software Foundation,
    Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
    
    END GPL LICENCE BLOCK
    '''
    
    import bpy
    import bmesh
    from mathutils import geometry
    
    
    def add_vertex_to_intersection():
    
        obj = bpy.context.object
        me = obj.data
        bm = bmesh.from_edit_mesh(me)
    
        edges = [e for e in bm.edges if e.select]
    
        if len(edges) == 2:
            [[v1, v2], [v3, v4]] = [[v.co for v in e.verts] for e in edges]
    
            iv = geometry.intersect_line_line(v1, v2, v3, v4)
            iv = (iv[0] + iv[1]) / 2
            bm.verts.new(iv)
            bm.verts[-1].select = True
            bmesh.update_edit_mesh(me)
    
    
    class Vert2Intersection(bpy.types.Operator):
    
        bl_idname = 'mesh.vertintersect'
        bl_label = 'v2x vertex to intersection'
        bl_options = {'REGISTER', 'UNDO'}
    
        @classmethod
        def poll(self, context):
            obj = context.active_object
            return obj is not None and obj.type == 'MESH' and obj.mode == 'EDIT'
    
        def execute(self, context):
            add_vertex_to_intersection()
            return {'FINISHED'}