C++ TRACK::GetNetCode方法代码示例

TRACK* TRACK::GetStartNetCode( int NetCode )
{
    TRACK* Track = this;
    int    ii    = 0;

    if( NetCode == -1 )
        NetCode = GetNetCode();

    while( Track != NULL )
    {
        if( Track->GetNetCode() > NetCode )
            break;

        if( Track->GetNetCode() == NetCode )
        {
            ii++;
            break;
        }

        Track = (TRACK*) Track->Pnext;
    }

    if( ii )
        return Track;
    else
        return NULL;
}

void ROUTER_TOOL::NeighboringSegmentFilter( const VECTOR2I& aPt, GENERAL_COLLECTOR& aCollector )
{
    /*
     * If the collection contains a trivial line corner (two connected segments)
     * or a non-fanout-via (a via with no more than two connected segments), then
     * trim the collection down to a single item (which one won't matter since
     * they're all connected).
     */

    // First make sure we've got something that *might* match.
    int vias = aCollector.CountType( PCB_VIA_T );
    int traces = aCollector.CountType( PCB_TRACE_T );

    if( vias > 1 || traces > 2 || vias + traces < 1 )
        return;

    // Fetch first TRACK (via or trace) as our reference
    TRACK* reference = nullptr;

    for( int i = 0; !reference && i < aCollector.GetCount(); i++ )
        reference = dynamic_cast<TRACK*>( aCollector[i] );

    int refNet = reference->GetNetCode();

    wxPoint refPoint( aPt.x, aPt.y );
    STATUS_FLAGS flags = reference->IsPointOnEnds( refPoint, -1 );

    if( flags & STARTPOINT )
        refPoint = reference->GetStart();
    else if( flags & ENDPOINT )
        refPoint = reference->GetEnd();

    // Check all items to ensure that any TRACKs are co-terminus with the reference and on
    // the same net.
    for( int i = 0; i < aCollector.GetCount(); i++ )
    {
        TRACK* neighbor = dynamic_cast<TRACK*>( aCollector[i] );

        if( neighbor && neighbor != reference )
        {
            if( neighbor->GetNetCode() != refNet )
                return;

            if( neighbor->GetStart() != refPoint && neighbor->GetEnd() != refPoint )
                return;
        }
    }

    // Selection meets criteria; trim it to the reference item.
    aCollector.Empty();
    aCollector.Append( reference );
}

bool TRACKS_CLEANER::remove_duplicates_of_track( const TRACK *aTrack )
{
    bool modified = false;

    TRACK *nextsegment;
    for( TRACK *other = aTrack->Next(); other; other = nextsegment )
    {
        nextsegment = other->Next();

        // New netcode, break out (can't be there any other)
        if( aTrack->GetNetCode() != other->GetNetCode() )
            break;

        // Must be of the same type, on the same layer and the endpoints
        // must be the same (maybe swapped)
        if( (aTrack->Type() != other->Type()) &&
            (aTrack->GetLayer() != other->GetLayer()) )
        {
            if( ((aTrack->GetStart() == other->GetStart()) &&
                 (aTrack->GetEnd() == other->GetEnd())) ||
                ((aTrack->GetStart() == other->GetEnd()) &&
                 (aTrack->GetEnd() == other->GetStart())))
            {
                m_Brd->GetRatsnest()->Remove( other );
                other->ViewRelease();
                other->DeleteStructure();
                modified = true;
            }
        }
    }
    return modified;
}

/*
 * Test all connections of the board,
 * and update subnet variable of pads and tracks
 * TestForActiveLinksInRatsnest must be called after this function
 * to update active/inactive ratsnest items status
 */
void PCB_BASE_FRAME::TestConnections()
{
    // Clear the cluster identifier for all pads
    for( unsigned i = 0;  i< m_Pcb->GetPadCount();  ++i )
    {
        D_PAD* pad = m_Pcb->GetPad(i);

        pad->SetZoneSubNet( 0 );
        pad->SetSubNet( 0 );
    }

    m_Pcb->Test_Connections_To_Copper_Areas();

    // Test existing connections net by net
    // note some nets can have no tracks, and pads intersecting
    // so Build_CurrNet_SubNets_Connections must be called for each net
    CONNECTIONS connections( m_Pcb );

    int last_net_tested = 0;
    int current_net_code = 0;

    for( TRACK* track = m_Pcb->m_Track; track; )
    {
        // At this point, track is the first track of a given net
        current_net_code = track->GetNetCode();

        // Get last track of the current net
        TRACK* lastTrack = track->GetEndNetCode( current_net_code );

        if( current_net_code > 0 )  // do not spend time if net code = 0 ( dummy net )
        {
            // Test all previous nets having no tracks
            for( int net = last_net_tested+1; net < current_net_code; net++ )
                connections.Build_CurrNet_SubNets_Connections( NULL, NULL, net );

            connections.Build_CurrNet_SubNets_Connections( track, lastTrack, current_net_code );
            last_net_tested = current_net_code;
        }

        track = lastTrack->Next();    // this is now the first track of the next net
    }

    // Test last nets without tracks, if any
    int netsCount = m_Pcb->GetNetCount();
    for( int net = last_net_tested+1; net < netsCount; net++ )
        connections.Build_CurrNet_SubNets_Connections( NULL, NULL, net );

    Merge_SubNets_Connected_By_CopperAreas( m_Pcb );

    return;
}

TRACK* TRACK::GetBestInsertPoint( BOARD* aPcb )
{
    TRACK* track;

    if( Type() == PCB_ZONE_T )
        track = aPcb->m_Zone;
    else
        track = aPcb->m_Track;

    for( ; track;  track = track->Next() )
    {
        if( GetNetCode() <= track->GetNetCode() )
            return track;
    }

    return NULL;
}

void BOARD::DrawHighLight( EDA_DRAW_PANEL* am_canvas, wxDC* DC, int aNetCode )
{
    GR_DRAWMODE draw_mode;

    if( IsHighLightNetON() )
        draw_mode = GR_HIGHLIGHT | GR_OR;
    else
        draw_mode = GR_AND | GR_HIGHLIGHT;

    // Redraw zones
    for( int ii = 0; ii < GetAreaCount(); ii++ )
    {
        ZONE_CONTAINER* zone = GetArea( ii );

        if( zone->GetNetCode() == aNetCode )
        {
            zone->Draw( am_canvas, DC, draw_mode );
        }
    }

    // Redraw any pads that have aNetCode
    for( MODULE* module = m_Modules; module; module = module->Next() )
    {
        for( D_PAD* pad = module->PadsList(); pad; pad = pad->Next() )
        {
            if( pad->GetNetCode() == aNetCode )
            {
                pad->Draw( am_canvas, DC, draw_mode );
            }
        }
    }

    // Redraw track and vias that have aNetCode
    for( TRACK* seg = m_Track; seg; seg = seg->Next() )
    {
        if( seg->GetNetCode() == aNetCode )
        {
            seg->Draw( am_canvas, DC, draw_mode );
        }
    }
}

void NETINFO_MAPPING::Update()
{
    // Collect all the used nets
    std::set<int> nets;

    // Be sure that the unconnected gets 0 and is mapped as 0
    nets.insert( 0 );

    // Zones
    for( int i = 0; i < m_board->GetAreaCount(); ++i )
        nets.insert( m_board->GetArea( i )->GetNetCode() );

    // Tracks
    for( TRACK* track = m_board->m_Track; track; track = track->Next() )
        nets.insert( track->GetNetCode() );

    // Modules/pads
    for( MODULE* module = m_board->m_Modules; module; module = module->Next() )
    {
        for( D_PAD* pad = module->Pads().GetFirst(); pad; pad = pad->Next() )
        {
            nets.insert( pad->GetNetCode() );
        }
    }

    // Segzones
    for( SEGZONE* zone = m_board->m_Zone; zone; zone = zone->Next() )
        nets.insert( zone->GetNetCode() );

    // Prepare the new mapping
    m_netMapping.clear();

    // Now the nets variable stores all the used net codes (not only for pads) and we are ready to
    // assign new consecutive net numbers
    int newNetCode = 0;
    for( std::set<int>::const_iterator it = nets.begin(), itEnd = nets.end(); it != itEnd; ++it )
        m_netMapping[*it] = newNetCode++;
}

TRACK* TRACK::GetBestInsertPoint( BOARD* aPcb )
{
    TRACK* track;

    // When reading from a file most of the items will already be in the correct order.
    // Searching from the back therefore takes us from n^2 to essentially 0.

    if( Type() == PCB_ZONE_T )  // Deprecated items, only found in very old boards
        track = aPcb->m_SegZoneDeprecated.GetLast();
    else
        track = aPcb->m_Track.GetLast();

    for( ; track;  track = track->Back() )
    {
        if( GetNetCode() >= track->GetNetCode() )
            return track->Next();
    }

    if( Type() == PCB_ZONE_T )  // Deprecated
        return aPcb->m_SegZoneDeprecated.GetFirst();
    else
        return aPcb->m_Track.GetFirst();
}

TRACK* TRACK::GetTrack( TRACK* aStartTrace, TRACK* aEndTrace, ENDPOINT_T aEndPoint,
        bool aSameNetOnly, bool aSequential )
{
    const wxPoint &position = GetEndPoint( aEndPoint );
    LAYER_MSK refLayers = GetLayerMask();
    TRACK *previousSegment;
    TRACK *nextSegment;

    if( aSequential )
    {
        // Simple sequential search: from aStartTrace forward to aEndTrace
        previousSegment = NULL;
        nextSegment = aStartTrace;
    }
    else
    {
        /* Local bidirectional search: from this backward to aStartTrace
         * AND forward to aEndTrace. The idea is that nearest segments
         * are found (on average) faster in this way. In fact same-net
         * segments are almost guaranteed to be found faster, in a global
         * search, since they are grouped together in the track list */
        previousSegment = this;
        nextSegment = this;
    }

    while( nextSegment || previousSegment )
    {
        // Terminate the search in the direction if the netcode mismatches
        if( aSameNetOnly )
        {
            if( nextSegment && (nextSegment->GetNetCode() != GetNetCode()) )
                nextSegment = NULL;
            if( previousSegment && (previousSegment->GetNetCode() != GetNetCode()) )
                previousSegment = NULL;
        }

        if( nextSegment )
        {
            if ( (nextSegment != this) &&
                 !nextSegment->GetState( BUSY | IS_DELETED ) &&
                 (refLayers & nextSegment->GetLayerMask()) )
            {
                if( (position == nextSegment->m_Start) ||
                    (position == nextSegment->m_End) )
                    return nextSegment;
            }

            // Keep looking forward
            if( nextSegment == aEndTrace )
                nextSegment = NULL;
            else
                nextSegment = nextSegment->Next();
        }

        // Same as above, looking back. During sequential search this branch is inactive
        if( previousSegment )
        {
            if ( (previousSegment != this) &&
                 !previousSegment->GetState( BUSY | IS_DELETED ) &&
                 (refLayers & previousSegment->GetLayerMask()) )
            {
                if( (position == previousSegment->m_Start) ||
                    (position == previousSegment->m_End) )
                    return previousSegment;
            }

            if( previousSegment == aStartTrace )
                previousSegment = NULL;
            else
                previousSegment = previousSegment->Back();
        }
    }

    return NULL;
}

//.........这里部分代码省略.........
        break;

    case ID_POPUP_PCB_END_LINE:
        m_canvas->MoveCursorToCrossHair();

        //  EndSegment(&dc);
        break;

    case ID_POPUP_PCB_EDIT_TRACK:
        if( GetCurItem() == NULL )
            break;
        Edit_Track_Width( &dc, (TRACK*) GetCurItem() );
        m_canvas->MoveCursorToCrossHair();
        OnModify();
        break;

    case ID_POPUP_PCB_EDIT_TRACKSEG:
        if( GetCurItem() == NULL )
            break;
        Edit_TrackSegm_Width( &dc, (TRACK*) GetCurItem() );
        m_canvas->MoveCursorToCrossHair();
        OnModify();
        break;

    case ID_POPUP_PCB_EDIT_ALL_VIAS_AND_TRACK_SIZE:
        if( GetCurItem() == NULL )
            break;
        {
        int type = GetCurItem()->Type();

        if( type == PCB_TRACE_T || type == PCB_VIA_T )
        {
            BOARD_CONNECTED_ITEM*item = (BOARD_CONNECTED_ITEM*) GetCurItem();
            DIALOG_GLOBAL_EDIT_TRACKS_AND_VIAS dlg( this, item->GetNetCode() );
            dlg.ShowModal();
        }

        }
        m_canvas->MoveCursorToCrossHair();
        break;

    case ID_POPUP_PCB_BEGIN_TRACK:
        m_canvas->MoveCursorToCrossHair();
        OnHotkeyBeginRoute( &dc );
        break;

    case ID_POPUP_PCB_END_TRACK:
        m_canvas->MoveCursorToCrossHair();
        End_Route( (TRACK*) GetCurItem(), &dc );
        break;

    case ID_POPUP_PCB_PLACE_MOVED_TRACK_NODE:
        m_canvas->MoveCursorToCrossHair();

        if( GetCurItem()->IsDragging() )
        {
            PlaceDraggedOrMovedTrackSegment( (TRACK*) GetCurItem(), &dc );
        }

        break;

    case ID_POPUP_PCB_SWITCH_TRACK_POSTURE:
        /* change the position of initial segment when creating new tracks
         * switch from _/  to -\ .
         * If a track is in progress, it will be redrawn
        */

// Delete null length segments, and intermediate points ..
bool TRACKS_CLEANER::clean_segments()
{
    bool modified = false;
    TRACK*          segment, * nextsegment;
    TRACK*          other;
    int             flag, no_inc;


    // Delete null segments
    for( segment = m_Brd->m_Track; segment; segment = nextsegment )
    {
        nextsegment = segment->Next();

        if( segment->IsNull() )     // Length segment = 0; delete it
            segment->DeleteStructure();
    }

    // Delete redundant segments, i.e. segments having the same end points
    // and layers
    for( segment  = m_Brd->m_Track; segment; segment = segment->Next() )
    {
        for( other = segment->Next(); other; other = nextsegment )
        {
            nextsegment = other->Next();
            bool erase = false;

            if( segment->Type() != other->Type() )
                continue;

            if( segment->GetLayer() != other->GetLayer() )
                continue;

            if( segment->GetNetCode() != other->GetNetCode() )
                break;

            if( ( segment->GetStart() == other->GetStart() ) &&
                ( segment->GetEnd() == other->GetEnd() ) )
                erase = true;

            if( ( segment->GetStart() == other->GetEnd() ) &&
                ( segment->GetEnd() == other->GetStart() ) )
                erase = true;

            // Delete redundant point
            if( erase )
            {
                other->DeleteStructure();
                modified = true;
            }
        }
    }

    // merge collinear segments:
    for( segment = m_Brd->m_Track; segment; segment = nextsegment )
    {
        TRACK*  segStart;
        TRACK*  segEnd;
        TRACK*  segDelete;

        nextsegment = segment->Next();

        if( segment->Type() != PCB_TRACE_T )
            continue;

        flag = no_inc = 0;

        // search for a possible point connected to the START point of the current segment
        for( segStart = segment->Next(); ; )
        {
            segStart = segment->GetTrace( segStart, NULL, FLG_START );

            if( segStart )
            {
                // the two segments must have the same width
                if( segment->GetWidth() != segStart->GetWidth() )
                    break;

                // it cannot be a via
                if( segStart->Type() != PCB_TRACE_T )
                    break;

                // We must have only one segment connected
                segStart->SetState( BUSY, true );
                other = segment->GetTrace( m_Brd->m_Track, NULL, FLG_START );
                segStart->SetState( BUSY, false );

                if( other == NULL )
                    flag = 1;           // OK

                break;
            }
            break;
        }

        if( flag )   // We have the starting point of the segment is connected to an other segment
        {
            segDelete = mergeCollinearSegmentIfPossible( segment, segStart, FLG_START );

            if( segDelete )
//.........这里部分代码省略.........

void ZONE_CONTAINER::buildFeatureHoleList( BOARD* aPcb, SHAPE_POLY_SET& aFeatures )
{
    int segsPerCircle;
    double correctionFactor;

    // Set the number of segments in arc approximations
    if( m_ArcToSegmentsCount == ARC_APPROX_SEGMENTS_COUNT_HIGHT_DEF  )
        segsPerCircle = ARC_APPROX_SEGMENTS_COUNT_HIGHT_DEF;
    else
        segsPerCircle = ARC_APPROX_SEGMENTS_COUNT_LOW_DEF;

    /* calculates the coeff to compensate radius reduction of holes clearance
     * due to the segment approx.
     * For a circle the min radius is radius * cos( 2PI / s_CircleToSegmentsCount / 2)
     * s_Correction is 1 /cos( PI/s_CircleToSegmentsCount  )
     */
    correctionFactor = 1.0 / cos( M_PI / (double) segsPerCircle );

    aFeatures.RemoveAllContours();

    int outline_half_thickness = m_ZoneMinThickness / 2;

    int zone_clearance = std::max( m_ZoneClearance, GetClearance() );
    zone_clearance += outline_half_thickness;

    /* store holes (i.e. tracks and pads areas as polygons outlines)
     * in a polygon list
     */

    /* items ouside the zone bounding box are skipped
     * the bounding box is the zone bounding box + the biggest clearance found in Netclass list
     */
    EDA_RECT item_boundingbox;
    EDA_RECT zone_boundingbox  = GetBoundingBox();
    int      biggest_clearance = aPcb->GetDesignSettings().GetBiggestClearanceValue();
    biggest_clearance = std::max( biggest_clearance, zone_clearance );
    zone_boundingbox.Inflate( biggest_clearance );

    /*
     * First : Add pads. Note: pads having the same net as zone are left in zone.
     * Thermal shapes will be created later if necessary
     */
    int item_clearance;

    /* Use a dummy pad to calculate hole clerance when a pad is not on all copper layers
     * and this pad has a hole
     * This dummy pad has the size and shape of the hole
    * Therefore, this dummy pad is a circle or an oval.
     * A pad must have a parent because some functions expect a non null parent
     * to find the parent board, and some other data
     */
    MODULE dummymodule( aPcb );    // Creates a dummy parent
    D_PAD dummypad( &dummymodule );

    for( MODULE* module = aPcb->m_Modules;  module;  module = module->Next() )
    {
        D_PAD* nextpad;

        for( D_PAD* pad = module->Pads(); pad != NULL; pad = nextpad )
        {
            nextpad = pad->Next();  // pad pointer can be modified by next code, so
                                    // calculate the next pad here

            if( !pad->IsOnLayer( GetLayer() ) )
            {
                /* Test for pads that are on top or bottom only and have a hole.
                 * There are curious pads but they can be used for some components that are
                 * inside the board (in fact inside the hole. Some photo diodes and Leds are
                 * like this)
                 */
                if( pad->GetDrillSize().x == 0 && pad->GetDrillSize().y == 0 )
                    continue;

                // Use a dummy pad to calculate a hole shape that have the same dimension as
                // the pad hole
                dummypad.SetSize( pad->GetDrillSize() );
                dummypad.SetOrientation( pad->GetOrientation() );
                dummypad.SetShape( pad->GetDrillShape() == PAD_DRILL_SHAPE_OBLONG ?
                                   PAD_SHAPE_OVAL : PAD_SHAPE_CIRCLE );
                dummypad.SetPosition( pad->GetPosition() );

                pad = &dummypad;
            }

            // Note: netcode <=0 means not connected item
            if( ( pad->GetNetCode() != GetNetCode() ) || ( pad->GetNetCode() <= 0 ) )
            {
                item_clearance   = pad->GetClearance() + outline_half_thickness;
                item_boundingbox = pad->GetBoundingBox();
                item_boundingbox.Inflate( item_clearance );

                if( item_boundingbox.Intersects( zone_boundingbox ) )
                {
                    int clearance = std::max( zone_clearance, item_clearance );
                    pad->TransformShapeWithClearanceToPolygon( aFeatures,
                                                               clearance,
                                                               segsPerCircle,
                                                               correctionFactor );
                }

//.........这里部分代码省略.........

/**
 * 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.........

/**
 * Function Merge_SubNets_Connected_By_CopperAreas(BOARD* aPcb, int aNetcode)
 * Used after connections by tracks calculations
 * Merge subnets, in tracks ans pads when they are connected by a filled copper area
 * for pads, this is the .m_physical_connexion member which is tested and modified
 * for tracks, this is the .m_Subnet member which is tested and modified
 * these members are block numbers (or cluster numbers) for a given net,
 * calculated by Build_Pads_Info_Connections_By_Tracks()
 * The result is merging 2 blocks (or subnets)
 * @param aPcb = the current board
 * @param aNetcode = netcode to consider
 */
void Merge_SubNets_Connected_By_CopperAreas( BOARD* aPcb, int aNetcode )
{
    // Ensure a zone with the given netcode exists: examine all zones:
    bool found = false;

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

        if( aNetcode == zone->GetNetCode() )
        {
            found = true;
            break;
        }
    }

    if( !found )  // No zone with this netcode, therefore no connection by zone
        return;

    // list of pads and tracks candidates to test:
    // It is static to avoid multiple memory realloc.
    static std::vector <BOARD_CONNECTED_ITEM*> Candidates;
    Candidates.clear();

    // Build the list of pads candidates connected to the net:
    NETINFO_ITEM* net = aPcb->FindNet( aNetcode );
    wxASSERT( 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;
    track = aPcb->m_Track.GetFirst()->GetStartNetCode( aNetcode );
    for( ; track; track = track->Next() )
    {
        if( track->GetNetCode() != aNetcode )
            break;
        Candidates.push_back( track );
    }

    if( Candidates.size() == 0 )
        return;

    int next_subnet_free_number = 0;
    for( unsigned ii = 0; ii < Candidates.size(); ii++ )
    {
        int subnet = Candidates[ii]->GetSubNet();
        next_subnet_free_number = std::max( next_subnet_free_number, subnet );
    }

    next_subnet_free_number++;     // This is a subnet we can use with not connected items
                                   // by tracks, but connected by zone.

    // Sort by zone_subnet:
    sort( Candidates.begin(), Candidates.end(), CmpZoneSubnetValue );

    // Some items can be not connected, but they can be connected to a filled area:
    // give them a subnet common to these items connected only by the area,
    // and not already used.
    // a value like next_subnet_free_number+zone_subnet is right
    for( unsigned jj = 0; jj < Candidates.size(); jj++ )
    {
        BOARD_CONNECTED_ITEM* item = Candidates[jj];
        if ( item->GetSubNet() == 0 && (item->GetZoneSubNet() > 0) )
        {
            item->SetSubNet( next_subnet_free_number + item->GetZoneSubNet() );
        }
    }

    // Now, for each zone subnet, we search for 2 items with different subnets.
    // if found, the 2 subnet are merged in the whole candidate list.
    int old_subnet      = 0;
    int old_zone_subnet = 0;
    for( unsigned ii = 0; ii < Candidates.size(); ii++ )
    {
        BOARD_CONNECTED_ITEM* item = Candidates[ii];
        int zone_subnet = item->GetZoneSubNet();

        if( zone_subnet == 0 )  // Not connected by a filled area, skip it
            continue;

        int subnet = item->GetSubNet();

        if( zone_subnet != old_zone_subnet )  // a new zone subnet is found
        {
            old_subnet = subnet;
            old_zone_subnet = zone_subnet;
//.........这里部分代码省略.........

//.........这里部分代码省略.........
    D_PAD dummypad( &dummymodule );

    for( MODULE* module = aPcb->m_Modules;  module;  module = module->Next() )
    {
        D_PAD* nextpad;

        for( D_PAD* pad = module->Pads(); pad != NULL; pad = nextpad )
        {
            nextpad = pad->Next();  // pad pointer can be modified by next code, so
                                    // calculate the next pad here

            if( !pad->IsOnLayer( GetLayer() ) )
            {
                /* Test for pads that are on top or bottom only and have a hole.
                 * There are curious pads but they can be used for some components that are
                 * inside the board (in fact inside the hole. Some photo diodes and Leds are
                 * like this)
                 */
                if( pad->GetDrillSize().x == 0 && pad->GetDrillSize().y == 0 )
                    continue;

                // Use a dummy pad to calculate a hole shape that have the same dimension as
                // the pad hole
                dummypad.SetSize( pad->GetDrillSize() );
                dummypad.SetOrientation( pad->GetOrientation() );
                dummypad.SetShape( pad->GetDrillShape() == PAD_DRILL_OBLONG ?
                                   PAD_OVAL : PAD_CIRCLE );
                dummypad.SetPosition( pad->GetPosition() );

                pad = &dummypad;
            }

            // Note: netcode <=0 means not connected item
            if( ( pad->GetNetCode() != GetNetCode() ) || ( pad->GetNetCode() <= 0 ) )
            {
                item_clearance   = pad->GetClearance() + margin;
                item_boundingbox = pad->GetBoundingBox();
                item_boundingbox.Inflate( item_clearance );

                if( item_boundingbox.Intersects( zone_boundingbox ) )
                {
                    int clearance = std::max( zone_clearance, item_clearance );
                    pad->TransformShapeWithClearanceToPolygon( cornerBufferPolysToSubstract,
                                                               clearance,
                                                               s_CircleToSegmentsCount,
                                                               s_Correction );
                }

                continue;
            }

            if( ( GetPadConnection( pad ) == PAD_NOT_IN_ZONE )
                || ( pad->GetShape() == PAD_TRAPEZOID ) )

            // PAD_TRAPEZOID shapes are not in zones because they are used in microwave apps
            // and i think it is good that shapes are not changed by thermal pads or others
            {
                int gap = zone_clearance;
                int thermalGap = GetThermalReliefGap( pad );
                gap = std::max( gap, thermalGap );
                item_boundingbox = pad->GetBoundingBox();

                if( item_boundingbox.Intersects( zone_boundingbox ) )
                {
                    pad->TransformShapeWithClearanceToPolygon( cornerBufferPolysToSubstract,
                                                               gap,