utils.py

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import bpy

def simple_to_mesh(ob):
    hide = False
    if ob.hide_viewport:
        hide = True
        ob.hide_viewport = False
    dg = bpy.context.evaluated_depsgraph_get()
    ob_eval = ob.evaluated_get(dg)
    me = bpy.data.meshes.new_from_object(ob_eval, preserve_all_data_layers=True, depsgraph=dg)
    me.calc_normals()
    ob.hide_viewport = hide
    return me