test

stellar.py

def mesh_append_face( obj, bm, vertex_list, uv_list, texture_name ):
    # add vertices and uvs before creating the new face
    for vert in vertex_list:
        bm.verts.new((*vert))

    bm.faces.new( ( bm.verts[i] for i in range( -len( vertex_list ), 0)) )

    # add uvs to the new face
    uv_layer = bm.loops.layers.uv.verify()
    bm.faces.layers.tex.verify()

    face = bm.faces[-1]
    for i, loop in enumerate(face.loops):
        loop[uv_layer].uv = uv_list[i]

    # assign material
    try:
        material_names = [ m.name for m in obj.data.materials ]
        material_id = material_names.index(texture_name)
    except ValueError:
        obj.data.materials.append(bpy.data.materials[texture_name])
        material_id = len(obj.data.materials) - 1

    face.material_index = material_id