void EDIT_TOOL::updateRatsnest( bool aRedraw )
{
    const SELECTION& selection = m_selectionTool->GetSelection();
    RN_DATA* ratsnest = getModel<BOARD>()->GetRatsnest();

    ratsnest->ClearSimple();
    for( unsigned int i = 0; i < selection.items.GetCount(); ++i )
    {
        BOARD_ITEM* item = selection.Item<BOARD_ITEM>( i );

        ratsnest->Update( item );

        if( aRedraw )
            ratsnest->AddSimple( item );
    }
}
int PCB_EDITOR_CONTROL::UpdateSelectionRatsnest( const TOOL_EVENT& aEvent )
{
    SELECTION_TOOL* selTool = m_toolMgr->GetTool<SELECTION_TOOL>();
    const SELECTION& selection = selTool->GetSelection();
    RN_DATA* ratsnest = getModel<BOARD>()->GetRatsnest();

    // Update "simple" ratsnest, computed for currently modified items
    ratsnest->ClearSimple();

    for( auto item : selection )
    {
        ratsnest->Update( static_cast<BOARD_ITEM*>( item ) );
        ratsnest->AddSimple( static_cast<BOARD_ITEM*>( item ) );
    }

    return 0;
}