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#===========================================================================
# * set_pivot_center_bottom()
# * 
# * Purpose: 
#===========================================================================                           
def set_pivot_center_bottom(input_sm:unreal.StaticMesh,outline_actor:unreal.Actor):
    if outline_actor==None:
        return
    
    stdio.printf('set_pivot_center_bottom() -- Start')
            
    asset_options = unreal.GeometryScriptCopyMeshFromAssetOptions()
    requested_lod = unreal.GeometryScriptMeshReadLOD()
    dm = unreal.DynamicMesh()
    unreal.GeometryScript_AssetUtils.copy_mesh_from_static_mesh(input_sm,dm,asset_options,requested_lod)
                
    mesh_bounds = input_sm.get_bounds()
    
    center = mesh_bounds.origin         # we need to keep this somewhere as we lose world positions when pivot is bottom center.
    extent = mesh_bounds.box_extent
    
    bottom_center = unreal.Vector(center.x, center.y, center.z )#- extent.z)    

    stdio.printf(f'DynamicMesh = {dm}','[SPCB]')
    stdio.printf(f'Location = {center}','[SPCB]')
    stdio.printf(f'Extent = {extent}','[SPCB]')
    stdio.printf(f'Bottom Center = {bottom_center}','[SPCB]')

    dm.translate_pivot_to_location(bottom_center)

    

    outline_actor.set_actor_location(center,False,False)

    options = unreal.GeometryScriptCopyMeshToAssetOptions()

    target_lod = unreal.GeometryScriptMeshWriteLOD()
    unreal.GeometryScript_AssetUtils.copy_mesh_to_static_mesh(dm,input_sm,options,target_lod)
    #unreal.EditorAssetLibrary.save_asset(input_sm)

    stdio.printf('set_pivot_center_bottom() -- End')