VIA::VIA( BOARD_ITEM* aParent ) :
    TRACK( aParent, PCB_VIA_T )
{
    SetViaType( VIA_THROUGH );
    m_BottomLayer = LAYER_N_BACK;
    SetDrillDefault();
}
TRACK::TRACK( BOARD_ITEM* aParent, KICAD_T idtype ) :
    BOARD_CONNECTED_ITEM( aParent, idtype )
{
    m_Width = Millimeter2iu( 0.2 );
    m_Shape = S_SEGMENT;
    start   = end = NULL;
    SetDrillDefault();
    m_Param = 0;
}