bmesh_lathe_example.py

import mathutils
from mathutils import Vector
import bmesh
 
import sv_bmesh_utils
from sv_bmesh_utils import bmesh_from_pydata
 
def sv_main(verts=[[]], edges=[[]], cent=[[]], axis=[[]], dvec=[[]], space=[[]], angle=2.0, steps=20):
 
    in_sockets = [
        ['v', 'verts', verts],
        ['s', 'edges', edges],
        ['v', 'cent', cent],
        ['v', 'axis', axis],
        ['v', 'dvec', dvec],
        ['m', 'matrix', space],
        ['s', 'angle', angle],
        ['s', 'steps', steps]
    ] 
 
    out_sockets = [ ['v', 'Vecs', []], ['s', 'Polys', []]  ]
 
    if not verts or not verts[0]:
        return in_sockets, out_sockets
 
    # defend against div by zero
    use_duplicate = False
    steps = max(steps, 1)
       
    cent = Vector(cent[0][0]) if (cent and cent[0]) else Vector()
    axis = Vector(axis[0][0]) if (axis and axis[0]) else Vector((0,0,1))
    dvec = Vector(dvec[0][0]) if (dvec and dvec[0]) else Vector()
    space = Matrix(space[0]) if (space and space[0]) else Matrix()
    
    bm = bmesh_from_pydata(verts[0], edges[0], [])
    geom = bm.verts[:] + bm.edges[:]
    
    bmesh.ops.spin(bm, 
        geom=geom, cent=cent, axis=axis, dvec=dvec, angle=angle, 
        space=space, steps=steps, use_duplicate=use_duplicate)
    
    v = [v.co[:] for v in bm.verts]
    p = [[i.index for i in p.verts] for p in bm.faces[:]]
 
    bm.free()
    out_sockets[0][2] = v
    out_sockets[1][2] = p
    return in_sockets, out_sockets