C++ TRACK::SetZoneSubNet方法代码示例

/* search connections between tracks and pads and propagate pad net codes to the track
 * segments.
 * Pads netcodes are assumed to be up to date.
 */
void PCB_BASE_FRAME::RecalculateAllTracksNetcode()
{
    // Build the net info list
    GetBoard()->BuildListOfNets();

    // Reset variables and flags used in computation
    for( TRACK* t = m_Pcb->m_Track;  t;  t = t->Next() )
    {
        t->m_TracksConnected.clear();
        t->m_PadsConnected.clear();
        t->start = NULL;
        t->end = NULL;
        t->SetState( BUSY | IN_EDIT | BEGIN_ONPAD | END_ONPAD, false );
        t->SetZoneSubNet( 0 );
        t->SetNetCode( NETINFO_LIST::UNCONNECTED );
    }

    // If no pad, reset pointers and netcode, and do nothing else
    if( m_Pcb->GetPadCount() == 0 )
        return;

    CONNECTIONS connections( m_Pcb );
    connections.BuildPadsList();
    connections.BuildTracksCandidatesList(m_Pcb->m_Track);

    // First pass: build connections between track segments and pads.
    connections.SearchTracksConnectedToPads();

    // For tracks connected to at least one pad,
    // set the track net code to the pad netcode
    for( TRACK* t = m_Pcb->m_Track;  t;  t = t->Next() )
    {
        if( t->m_PadsConnected.size() )
            t->SetNetCode( t->m_PadsConnected[0]->GetNetCode() );
    }

    // Pass 2: build connections between track ends
    for( TRACK* t = m_Pcb->m_Track;  t;  t = t->Next() )
    {
        connections.SearchConnectedTracks( t );
        connections.GetConnectedTracks( t );
    }

    // Propagate net codes from a segment to other connected segments
    bool new_pass_request = true;   // set to true if a track has its netcode changed from 0
                                    // to a known netcode to re-evaluate netcodes
                                    // of connected items
    while( new_pass_request )
    {
        new_pass_request = false;

        for( TRACK* t = m_Pcb->m_Track;  t;  t = t->Next() )
        {
            int netcode = t->GetNetCode();

            if( netcode == 0 )
            {
                // try to find a connected item having a netcode
                for( unsigned kk = 0; kk < t->m_TracksConnected.size(); kk++ )
                {
                    int altnetcode = t->m_TracksConnected[kk]->GetNetCode();
                    if( altnetcode )
                    {
                        new_pass_request = true;
                        netcode = altnetcode;
                        t->SetNetCode(netcode);
                        break;
                    }
                }
            }

            if( netcode )    // this track has a netcode
            {
                // propagate this netcode to connected tracks having no netcode
                for( unsigned kk = 0; kk < t->m_TracksConnected.size(); kk++ )
                {
                    int altnetcode = t->m_TracksConnected[kk]->GetNetCode();
                    if( altnetcode == 0 )
                    {
                        t->m_TracksConnected[kk]->SetNetCode(netcode);
                        new_pass_request = true;
                    }
                }
            }
        }
    }

    // Sort the track list by net codes:
    RebuildTrackChain( m_Pcb );
}

/**
 * Function Test_Connection_To_Copper_Areas
 * init .m_ZoneSubnet parameter in tracks and pads according to the connections to areas found
 * @param aNetcode = netcode to analyse. if -1, analyse all nets
 */
void BOARD::Test_Connections_To_Copper_Areas( int aNetcode )
{
    // list of pads and tracks candidates on this layer and on this net.
    // It is static to avoid multiple memory realloc.
    static std::vector <BOARD_CONNECTED_ITEM*> candidates;

    // clear .m_ZoneSubnet parameter for pads
    for( MODULE* module = m_Modules;  module;  module = module->Next() )
    {
        for( D_PAD* pad = module->Pads();  pad;  pad = pad->Next() )
            if( aNetcode < 0 || aNetcode == pad->GetNetCode() )
                pad->SetZoneSubNet( 0 );
    }

    // clear .m_ZoneSubnet parameter for tracks and vias
    for( TRACK* track = m_Track;  track;  track = track->Next() )
    {
        if( aNetcode < 0 || aNetcode == track->GetNetCode() )
            track->SetZoneSubNet( 0 );
    }

    // examine all zones, net by net:
    int subnet = 0;

    // Build zones candidates list
    std::vector<ZONE_CONTAINER*> zones_candidates;

    zones_candidates.reserve( GetAreaCount() );

    for( int index = 0; index < GetAreaCount(); index++ )
    {
        ZONE_CONTAINER* zone = GetArea( index );

        if( !zone->IsOnCopperLayer() )
            continue;

        if( aNetcode >= 0 &&  aNetcode != zone->GetNetCode() )
            continue;

        if( zone->GetFilledPolysList().GetCornersCount() == 0 )
            continue;

        zones_candidates.push_back( zone );
    }

    // sort them by netcode then vertices count.
    // For a given net, examine the smaller zones first slightly speed up calculation
    // (25% faster)
    // this is only noticeable with very large boards and depends on board zones topology
    // This is due to the fact some items are connected by small zones ares,
    // before examining large zones areas and these items are not tested after a connection is found
    sort( zones_candidates.begin(), zones_candidates.end(), sort_areas );

    int oldnetcode = -1;
    for( unsigned idx = 0; idx < zones_candidates.size(); idx++ )
    {
        ZONE_CONTAINER* zone = zones_candidates[idx];

        int netcode = zone->GetNetCode();

        // Build a list of candidates connected to the net:
        // At this point, layers are not considered, because areas on different layers can
        // be connected by a via or a pad.
        // (because zones are sorted by netcode, there is made only once per net)
        NETINFO_ITEM* net = FindNet( netcode );

        wxASSERT( net );
        if( net == NULL )
            continue;

        if( oldnetcode != netcode )
        {
            oldnetcode = netcode;
            candidates.clear();

            // Build the list of pads candidates connected to the net:
            candidates.reserve( net->m_PadInNetList.size() );

            for( unsigned ii = 0; ii < net->m_PadInNetList.size(); ii++ )
                candidates.push_back( net->m_PadInNetList[ii] );

            // Build the list of track candidates connected to the net:
            TRACK* track = m_Track.GetFirst()->GetStartNetCode( netcode );

            for( ; track; track = track->Next() )
            {
                if( track->GetNetCode() != netcode )
                    break;

                candidates.push_back( track );
            }
        }

        // test if a candidate is inside a filled area of this zone
        unsigned indexstart = 0, indexend;
//.........这里部分代码省略.........