C++ TRACK::Next方法代码示例

// Delete null length segments, and intermediate points ..
bool TRACKS_CLEANER::clean_segments()
{
    bool modified = false;

    // Easy things first
    modified |= delete_null_segments();

    // Delete redundant segments, i.e. segments having the same end points and layers
    for( TRACK *segment = m_Brd->m_Track; segment; segment = segment->Next() )
        modified |= remove_duplicates_of_track( segment );

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

        if( segment->Type() == PCB_TRACE_T )
        {
            bool merged_this = merge_collinear_of_track( segment );
            modified |= merged_this;

            if( merged_this ) // The current segment was modified, retry to merge it again
                nextsegment = segment->Next();
        }
    }

    return modified;
}

/* Creates the section "$TRACKS"
 *  This sections give the list of widths (tools) used in tracks and vias
 *  format:
 *  $TRACK
 *  TRACK <name> <width>
 *  $ENDTRACK
 *
 *  Each tool name is build like this: "TRACK" + track width.
 *  For instance for a width = 120 : name = "TRACK120".
 */
static void CreateTracksInfoData( FILE* aFile, BOARD* aPcb )
{
    TRACK* track;
    int    last_width = -1;

    // Find thickness used for traces
    // XXX could use the same sorting approach used for pads

    std::vector <int> trackinfo;

    unsigned          ii;

    for( track = aPcb->m_Track; track; track = track->Next() )
    {
        if( last_width != track->GetWidth() ) // Find a thickness already used.
        {
            for( ii = 0; ii < trackinfo.size(); ii++ )
            {
                if( trackinfo[ii] == track->GetWidth() )
                    break;
            }

            if( ii == trackinfo.size() )    // not found
                trackinfo.push_back( track->GetWidth() );

            last_width = track->GetWidth();
        }
    }

    for( track = aPcb->m_Zone; track; track = track->Next() )
    {
        if( last_width != track->GetWidth() ) // Find a thickness already used.
        {
            for( ii = 0; ii < trackinfo.size(); ii++ )
            {
                if( trackinfo[ii] == track->GetWidth() )
                    break;
            }

            if( ii == trackinfo.size() )    // not found
                trackinfo.push_back( track->GetWidth() );

            last_width = track->GetWidth();
        }
    }

    // Write data
    fputs( "$TRACKS\n", aFile );

    for( ii = 0; ii < trackinfo.size(); ii++ )
    {
        fprintf( aFile, "TRACK TRACK%d %g\n", trackinfo[ii],
                 trackinfo[ii] / SCALE_FACTOR );
    }

    fputs( "$ENDTRACKS\n\n", aFile );
}

void DRC::testTracks( wxWindow *aActiveWindow, bool aShowProgressBar )
{
    wxProgressDialog * progressDialog = NULL;
    const int delta = 500;  // This is the number of tests between 2 calls to the
                            // progress bar
    int count = 0;
    for( TRACK* segm = m_pcb->m_Track; segm && segm->Next(); segm = segm->Next() )
        count++;

    int deltamax = count/delta;

    if( aShowProgressBar && deltamax > 3 )
    {
        progressDialog = new wxProgressDialog( _( "Track clearances" ), wxEmptyString,
                                               deltamax, aActiveWindow,
                                               wxPD_AUTO_HIDE | wxPD_CAN_ABORT |
                                               wxPD_APP_MODAL | wxPD_ELAPSED_TIME );
        progressDialog->Update( 0, wxEmptyString );
    }

    int ii = 0;
    count = 0;

    for( TRACK* segm = m_pcb->m_Track; segm && segm->Next(); segm = segm->Next() )
    {
        if ( ii++ > delta )
        {
            ii = 0;
            count++;

            if( progressDialog )
            {
                if( !progressDialog->Update( count, wxEmptyString ) )
                    break;  // Aborted by user
#ifdef __WXMAC__
                // Work around a dialog z-order issue on OS X
                if( count == deltamax )
                    aActiveWindow->Raise();
#endif
            }
        }

        if( !doTrackDrc( segm, segm->Next(), true ) )
        {
            wxASSERT( m_currentMarker );
            m_pcb->Add( m_currentMarker );
            m_mainWindow->GetGalCanvas()->GetView()->Add( m_currentMarker );
            m_currentMarker = 0;
        }
    }

    if( progressDialog )
        progressDialog->Destroy();
}

void DRC::testTracks( bool aShowProgressBar )
{
    wxProgressDialog * progressDialog = NULL;
    const int delta = 500;  // This is the number of tests between 2 calls to the
                            // progress bar
    int count = 0;
    for( TRACK* segm = m_pcb->m_Track; segm && segm->Next(); segm = segm->Next() )
        count++;

    int deltamax = count/delta;

    if( aShowProgressBar && deltamax > 3 )
    {
        progressDialog = new wxProgressDialog( _( "Track clearances" ), wxEmptyString,
                                               deltamax, m_mainWindow,
                                               wxPD_AUTO_HIDE | wxPD_CAN_ABORT );
        progressDialog->Update( 0, wxEmptyString );
    }

    int ii = 0;
    count = 0;

    for( TRACK* segm = m_pcb->m_Track; segm && segm->Next(); segm = segm->Next() )
    {
        if ( ii++ > delta )
        {
            ii = 0;
            count++;

            if( progressDialog )
            {
                if( !progressDialog->Update( count, wxEmptyString ) )
                    break;  // Aborted by user
            }
        }

        if( !doTrackDrc( segm, segm->Next(), true ) )
        {
            wxASSERT( m_currentMarker );
            m_pcb->Add( m_currentMarker );
            m_mainWindow->GetGalCanvas()->GetView()->Add( m_currentMarker );
            m_currentMarker = 0;
        }
    }

    if( progressDialog )
        progressDialog->Destroy();
}

TRACK* GetTrack( TRACK* aStartTrace, const TRACK* aEndTrace,
        const wxPoint& aPosition, LSET aLayerMask )
{
    for( TRACK* seg = aStartTrace;  seg;  seg = seg->Next() )
    {
        if( seg->GetState( IS_DELETED | BUSY ) == 0 )
        {
            if( aPosition == seg->GetStart() )
            {
                if( ( aLayerMask & seg->GetLayerSet() ).any() )
                    return seg;
            }

            if( aPosition == seg->GetEnd() )
            {
                if( ( aLayerMask & seg->GetLayerSet() ).any() )
                    return seg;
            }
        }

        if( seg == aEndTrace )
            break;
    }

    return NULL;
}

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;
}

int SELECTION_TOOL::selectConnection( const TOOL_EVENT& aEvent )
{
    BOARD_CONNECTED_ITEM* item = m_selection.Item<BOARD_CONNECTED_ITEM>( 0 );
    int segmentCount;

    if( item->Type() != PCB_TRACE_T && item->Type() != PCB_VIA_T )
        return 0;

    clearSelection();
    TRACK* trackList = getModel<BOARD>()->MarkTrace( static_cast<TRACK*>( item ), &segmentCount,
                                                        NULL, NULL, true );

    if( segmentCount == 0 )
        return 0;

    for( int i = 0; i < segmentCount; ++i )
    {
        select( trackList );
        trackList = trackList->Next();
    }

    // Inform other potentially interested tools
    TOOL_EVENT selectEvent( SelectedEvent );
    m_toolMgr->ProcessEvent( selectEvent );

    return 0;
}

TRACK* GetTrack( TRACK* aStartTrace, const TRACK* aEndTrace,
        const wxPoint& aPosition, LAYER_MSK aLayerMask )
{
    for( TRACK *PtSegm = aStartTrace; PtSegm != NULL; PtSegm = PtSegm->Next() )
    {
        if( PtSegm->GetState( IS_DELETED | BUSY ) == 0 )
        {
            if( aPosition == PtSegm->GetStart() )
            {
                if( aLayerMask & PtSegm->GetLayerMask() )
                    return PtSegm;
            }

            if( aPosition == PtSegm->GetEnd() )
            {
                if( aLayerMask & PtSegm->GetLayerMask() )
                    return PtSegm;
            }
        }

        if( PtSegm == aEndTrace )
            break;
    }

    return NULL;
}

static void Show_MoveTrack(WinEDA_DrawPanel * panel, wxDC * DC, bool erase)
/*************************************************************************/
/* redessin du contour de la piste lors des deplacements de la souris */
{
int ii, dx, dy;
TRACK * Track;
BASE_SCREEN * screen = panel->GetScreen();
int track_fill_copy = DisplayOpt.DisplayPcbTrackFill;

	DisplayOpt.DisplayPcbTrackFill = SKETCH ;

erase = TRUE;

	/* efface ancienne position si elle a ete deja dessinee */
	if( erase )
	{
		if ( NewTrack ) Trace_Une_Piste(panel, DC, NewTrack,NbPtNewTrack,GR_XOR) ;
	}

	/* mise a jour des coordonnees des segments de la piste */
	wxPoint Pos = screen->m_Curseur;
	dx = Pos.x - LastPos.x;
	dy = Pos.y - LastPos.y;
	LastPos = Pos;
	ii = NbPtNewTrack, Track = NewTrack;
	for( ; ii > 0; ii--, Track = Track->Next() )
	{
		if( Track->m_Flags & STARTPOINT)
		{
			Track->m_Start.x += dx; Track->m_Start.y += dy;
		}
		if( Track->m_Flags & ENDPOINT)
		{
			Track->m_End.x += dx; Track->m_End.y += dy;
		}
	}

	/* dessin de la nouvelle piste */
	Trace_Une_Piste(panel, DC, NewTrack,NbPtNewTrack,GR_XOR) ;

	/* Tracage des segments dragges */
	DRAG_SEGM * pt_drag = g_DragSegmentList;
	for( ; pt_drag != NULL; pt_drag = pt_drag->Pnext)
	{
		Track = pt_drag->m_Segm;
		if ( erase ) Track->Draw(panel, DC, GR_XOR);
		if( Track->m_Flags & STARTPOINT)
		{
			Track->m_Start.x += dx; Track->m_Start.y += dy;
		}
		if( Track->m_Flags & ENDPOINT)
		{
			Track->m_End.x += dx; Track->m_End.y += dy;
		}
		Track->Draw(panel, DC, GR_XOR);
	}
	DisplayOpt.DisplayPcbTrackFill = track_fill_copy ;
}

void DrawTraces( EDA_DRAW_PANEL* panel, wxDC* DC, TRACK* aTrackList, int nbsegment,
                 GR_DRAWMODE draw_mode )
{
    // preserve the start of the list for debugging.
    for( TRACK* track = aTrackList; nbsegment > 0 && track; nbsegment--, track = track->Next() )
    {
        track->Draw( panel, DC, draw_mode );
    }
}

void PCB_EDIT_FRAME::Swap_Layers( wxCommandEvent& event )
{
    PCB_LAYER_ID new_layer[PCB_LAYER_ID_COUNT];

    DIALOG_SWAP_LAYERS dlg( this, new_layer );

    if( dlg.ShowModal() != wxID_OK )
        return;

    BOARD_COMMIT commit( this );
    bool hasChanges = false;

    // Change tracks.
    for( TRACK* segm = GetBoard()->m_Track;  segm;  segm = segm->Next() )
    {
        if( segm->Type() == PCB_VIA_T )
        {
            VIA*         via = (VIA*) segm;
            PCB_LAYER_ID top_layer, bottom_layer;

            if( via->GetViaType() == VIA_THROUGH )
                continue;

            via->LayerPair( &top_layer, &bottom_layer );

            if( new_layer[bottom_layer] != bottom_layer || new_layer[top_layer] != top_layer )
            {
                commit.Modify( via );
                via->SetLayerPair( new_layer[top_layer], new_layer[bottom_layer] );
                GetGalCanvas()->GetView()->Update( via, KIGFX::GEOMETRY );
                hasChanges = true;
            }
        }
        else
        {
            hasChanges |= processBoardItem( this, commit, segm, new_layer );
        }
    }

    for( BOARD_ITEM* zone : GetBoard()->Zones() )
    {
        hasChanges |= processBoardItem( this, commit, zone, new_layer );
    }

    for( BOARD_ITEM* drawing : GetBoard()->Drawings() )
    {
        hasChanges |= processBoardItem( this, commit, drawing, new_layer );
    }

    if( hasChanges )
    {
        OnModify();
        commit.Push( "Layers moved" );
        GetCanvas()->Refresh();
    }
}

static void export_vrml_tracks( BOARD* pcb ) //{{{
{
    for( TRACK* track = pcb->m_Track; track != NULL; track = track->Next() )
    {
        if( track->Type() == PCB_VIA_T )
            export_vrml_via( pcb, (SEGVIA*) track );
        else
            export_vrml_line( track->GetLayer(), track->GetStart().x, track->GetStart().y,
                              track->GetEnd().x, track->GetEnd().y, track->GetWidth(), 4 );
    }
}

void PCB_DRAW_PANEL_GAL::DisplayBoard( const BOARD* aBoard )
{
    m_view->Clear();

    // Load zones
    for( int i = 0; i < aBoard->GetAreaCount(); ++i )
        m_view->Add( (KIGFX::VIEW_ITEM*) ( aBoard->GetArea( i ) ) );

    // Load drawings
    for( BOARD_ITEM* drawing = aBoard->m_Drawings; drawing; drawing = drawing->Next() )
        m_view->Add( drawing );

    // Load tracks
    for( TRACK* track = aBoard->m_Track; track; track = track->Next() )
        m_view->Add( track );

    // Load modules and its additional elements
    for( MODULE* module = aBoard->m_Modules; module; module = module->Next() )
    {
        module->RunOnChildren( boost::bind( &KIGFX::VIEW::Add, m_view, _1 ) );
        m_view->Add( module );
    }

    // Segzones (equivalent of ZONE_CONTAINER for legacy boards)
    for( SEGZONE* zone = aBoard->m_Zone; zone; zone = zone->Next() )
        m_view->Add( zone );

    // Ratsnest
    if( m_ratsnest )
    {
        m_view->Remove( m_ratsnest );
        delete m_ratsnest;
    }

    m_ratsnest = new KIGFX::RATSNEST_VIEWITEM( aBoard->GetRatsnest() );
    m_view->Add( m_ratsnest );

    // Display settings
    UseColorScheme( aBoard->GetColorsSettings() );

    PCB_BASE_FRAME* frame = dynamic_cast<PCB_BASE_FRAME*>( GetParent() );

    if( frame )
    {
        SetTopLayer( frame->GetActiveLayer() );
        DISPLAY_OPTIONS* displ_opts = (DISPLAY_OPTIONS*) frame->GetDisplayOptions();
        static_cast<KIGFX::PCB_RENDER_SETTINGS*>(
            m_view->GetPainter()->GetSettings() )->LoadDisplayOptions( displ_opts );
    }

    m_view->RecacheAllItems( true );
}

/*
 * 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;
}

void DRC::testKeepoutAreas()
{
    // Test keepout areas for vias, tracks and pads inside keepout areas
    for( int ii = 0; ii < m_pcb->GetAreaCount(); ii++ )
    {
        ZONE_CONTAINER* area = m_pcb->GetArea( ii );

        if( !area->GetIsKeepout() )
            continue;

        for( TRACK* segm = m_pcb->m_Track; segm != NULL; segm = segm->Next() )
        {
            if( segm->Type() == PCB_TRACE_T )
            {
                if( ! area->GetDoNotAllowTracks()  )
                    continue;

                if( segm->GetLayer() != area->GetLayer() )
                    continue;

                if( area->Outline()->Distance( segm->GetStart(), segm->GetEnd(),
                                               segm->GetWidth() ) == 0 )
                {
                    m_currentMarker = fillMarker( segm, NULL,
                                                  DRCE_TRACK_INSIDE_KEEPOUT, m_currentMarker );
                    m_pcb->Add( m_currentMarker );
                    m_mainWindow->GetGalCanvas()->GetView()->Add( m_currentMarker );
                    m_currentMarker = 0;
                }
            }
            else if( segm->Type() == PCB_VIA_T )
            {
                if( ! area->GetDoNotAllowVias()  )
                    continue;

                if( ! ((VIA*)segm)->IsOnLayer( area->GetLayer() ) )
                    continue;

                if( area->Outline()->Distance( segm->GetPosition() ) < segm->GetWidth()/2 )
                {
                    m_currentMarker = fillMarker( segm, NULL,
                                                  DRCE_VIA_INSIDE_KEEPOUT, m_currentMarker );
                    m_pcb->Add( m_currentMarker );
                    m_mainWindow->GetGalCanvas()->GetView()->Add( m_currentMarker );
                    m_currentMarker = 0;
                }
            }
        }
        // Test pads: TODO
    }
}