__init__.py

bl_info = {
    "name": "Extrude and Inset",
    "author": "Alfonso Annarumam",
    "version": (0, 2),
    "blender": (4, 0, 0),
    "location": "View3D > Menu -> Face",
    "description": "Inset and Extrude with more option ",
    "warning": "",
    "wiki_url": "",
    "category": "Mesh",
}

import bpy
import bmesh
from bpy.props import IntProperty, FloatProperty
from mathutils import Vector


def main(context, thickness, extrude, loop, thick_loop):
    obj = bpy.context.edit_object
    me = obj.data
    faces = []
    normals = []
    verts = []
    # Get a BMesh representation
    bm = bmesh.from_edit_mesh(me)
    for f in bm.faces:
        if f.select:
            faces.append(f)

    # face = bm.faces.active

    if thickness > 0.0:
        for tl in range(0, thick_loop + 1):
            bmesh.ops.inset_region(bm, faces=faces, thickness=(thickness / (thick_loop + 1)), depth=0,
                                   use_even_offset=True)
    if abs(extrude) > 0.0:

        # verts.append(v for f in face for v in f.verts)
        for l in range(0, loop + 1):
            bmesh.ops.inset_region(bm, faces=faces, thickness=0, depth=0, use_even_offset=True)
            for f in faces:
                if f.select:
                    normals.append(f.normal)
                    for v in f.verts:
                        if v not in verts:
                            verts.append(v)
            normal = sum(normals, Vector()) / len(normals)

            bmesh.ops.translate(bm, verts=verts, vec=normal * (extrude / (loop + 1)))
            verts = []
            # print(geom)
    # Show the updates in the viewport
    # and recalculate n-gon tessellation.
    bmesh.update_edit_mesh(me, loop_triangles=True, destructive=True)


class Mesh_OT_Extrude_Inset(bpy.types.Operator):
    """Tooltip"""
    bl_idname = "mesh.extrude_inset"
    bl_label = "Extrude and Inset"
    bl_options = {'REGISTER', 'UNDO'}

    thickness: FloatProperty(name="Inset", default=0.0)
    thick_loop: IntProperty(name="Inset Loops", default=0, min=0)
    extrude: FloatProperty(name="Extrude", default=0.0)
    loop: IntProperty(name="Extrude Loops", default=0, min=0)

    @classmethod
    def poll(cls, context):
        return context.active_object is not None

    def execute(self, context):
        # print("esegui")
        main(context, self.thickness, self.extrude, self.loop, self.thick_loop)
        return {'FINISHED'}


def menu_func(self, context):
    layout = self.layout
    layout.operator("mesh.extrude_inset")


def register():
    bpy.utils.register_class(Mesh_OT_Extrude_Inset)
    bpy.types.VIEW3D_MT_edit_mesh_faces.append(menu_func)


def unregister():
    bpy.utils.unregister_class(Mesh_OT_Extrude_Inset)
    bpy.types.VIEW3D_MT_edit_mesh_faces.remove(menu_func)


if __name__ == "__main__":
    register()