bool PCB_EDIT_FRAME::Other_Layer_Route( TRACK* aTrack, wxDC* DC )
{
    unsigned    itmp;

    if( aTrack == NULL )
    {
        if( getActiveLayer() != ((PCB_SCREEN*)GetScreen())->m_Route_Layer_TOP )
            setActiveLayer( ((PCB_SCREEN*)GetScreen())->m_Route_Layer_TOP );
        else
            setActiveLayer(((PCB_SCREEN*)GetScreen())->m_Route_Layer_BOTTOM );

        UpdateStatusBar();
        return true;
    }

    // Avoid more than one via on the current location:
    if( GetBoard()->GetViaByPosition( g_CurrentTrackSegment->GetEnd(),
                                      g_CurrentTrackSegment->GetLayer() ) )
        return false;

    for( TRACK* segm = g_FirstTrackSegment;  segm;  segm = segm->Next() )
    {
        if( segm->Type() == PCB_VIA_T && g_CurrentTrackSegment->GetEnd() == segm->GetStart() )
            return false;
    }

    // Is the current segment Ok (no DRC error) ?
    if( g_Drc_On )
    {
        if( BAD_DRC==m_drc->Drc( g_CurrentTrackSegment, GetBoard()->m_Track ) )
            // DRC error, the change layer is not made
            return false;

        // Handle 2 segments.
        if( g_TwoSegmentTrackBuild && g_CurrentTrackSegment->Back() )
        {
            if( BAD_DRC == m_drc->Drc( g_CurrentTrackSegment->Back(), GetBoard()->m_Track ) )
                return false;
        }
    }

    /* Save current state before placing a via.
     * If the via cannot be placed this current state will be reused
     */
    itmp = g_CurrentTrackList.GetCount();
    Begin_Route( g_CurrentTrackSegment, DC );

    m_canvas->CallMouseCapture( DC, wxDefaultPosition, false );

    // create the via
    SEGVIA* via    = new SEGVIA( GetBoard() );
    via->SetFlags( IS_NEW );
    via->SetShape( GetDesignSettings().m_CurrentViaType );
    via->SetWidth( GetBoard()->GetCurrentViaSize());
    via->SetNet( GetBoard()->GetHighLightNetCode() );
    via->SetEnd( g_CurrentTrackSegment->GetEnd() );
    via->SetStart( g_CurrentTrackSegment->GetEnd() );

    // Usual via is from copper to component.
    // layer pair is LAYER_N_BACK and LAYER_N_FRONT.
    via->SetLayerPair( LAYER_N_BACK, LAYER_N_FRONT );
    via->SetDrill( GetBoard()->GetCurrentViaDrill() );

    LAYER_NUM first_layer = getActiveLayer();
    LAYER_NUM last_layer;

    // prepare switch to new active layer:
    if( first_layer != GetScreen()->m_Route_Layer_TOP )
        last_layer = GetScreen()->m_Route_Layer_TOP;
    else
        last_layer = GetScreen()->m_Route_Layer_BOTTOM;

    // Adjust the actual via layer pair
    switch ( via->GetShape() )
    {
        case VIA_BLIND_BURIED:
            via->SetLayerPair( first_layer, last_layer );
            break;

        case VIA_MICROVIA:  // from external to the near neighbor inner layer
        {
            LAYER_NUM last_inner_layer = FIRST_LAYER + (GetBoard()->GetCopperLayerCount() - 2);
            if ( first_layer == LAYER_N_BACK )
                last_layer = LAYER_N_2;
            else if ( first_layer == LAYER_N_FRONT )
                last_layer = last_inner_layer;
            else if ( first_layer == LAYER_N_2 )
                last_layer = LAYER_N_BACK;
            else if ( first_layer == last_inner_layer )
                last_layer = LAYER_N_FRONT;

            // else error: will be removed later
            via->SetLayerPair( first_layer, last_layer );
            {
                NETINFO_ITEM* net = GetBoard()->FindNet( via->GetNet() );
                via->SetWidth( net->GetMicroViaSize() );
            }
        }
            break;

        default:
            break;
    }

    if( g_Drc_On && BAD_DRC == m_drc->Drc( via, GetBoard()->m_Track ) )
    {
        // DRC fault: the Via cannot be placed here ...
        delete via;

        m_canvas->CallMouseCapture( DC, wxDefaultPosition, false );

        // delete the track(s) added in Begin_Route()
        while( g_CurrentTrackList.GetCount() > itmp )
        {
            Delete_Segment( DC, g_CurrentTrackSegment );
        }

         SetCurItem( g_CurrentTrackSegment, false );

        // Refresh DRC diag, erased by previous calls
        if( m_drc->GetCurrentMarker() )
            SetMsgPanel( m_drc->GetCurrentMarker() );

        return false;
    }

    setActiveLayer( last_layer );

    TRACK*  lastNonVia = g_CurrentTrackSegment;

    /* A new via was created. It was Ok.
     */
    g_CurrentTrackList.PushBack( via );

    /* The via is now in linked list and we need a new track segment
     * after the via, starting at via location.
     * it will become the new current segment (from via to the mouse cursor)
     */

    TRACK* track = (TRACK*)lastNonVia->Clone();

    /* the above creates a new segment from the last entered segment, with the
     * current width, flags, netcode, etc... values.
     * layer, start and end point are not correct,
     * and will be modified next
     */

    // set the layer to the new value
    track->SetLayer( getActiveLayer() );

    /* the start point is the via position and the end point is the cursor
     * which also is on the via (will change when moving mouse)
     */
    track->SetEnd( via->GetStart() );
    track->SetStart( via->GetStart() ); 

    g_CurrentTrackList.PushBack( track );

    if( g_TwoSegmentTrackBuild )
    {
        // Create a second segment (we must have 2 track segments to adjust)
        g_CurrentTrackList.PushBack( (TRACK*)g_CurrentTrackSegment->Clone() );
    }

    m_canvas->CallMouseCapture( DC, wxDefaultPosition, false );
    SetMsgPanel( via );
    UpdateStatusBar();

    return true;
}
Example #2
0
/*
 *  Delete dangling tracks
 *  Vias:
 *  If a via is only connected to a dangling track, it also will be removed
 */
bool TRACKS_CLEANER::deleteUnconnectedTracks()
{
    if( m_Brd->m_Track == NULL )
        return false;

    bool modified = false;
    bool item_erased = true;
    while( item_erased )    // Iterate when at least one track is deleted
    {
        item_erased = false;
        TRACK* next_track;
        for( TRACK * track = m_Brd->m_Track; track ; track = next_track )
        {
            next_track = track->Next();

            int flag_erase = 0; //Not connected indicator
            int type_end = 0;

            if( track->GetState( START_ON_PAD ) )
                type_end |= START_ON_PAD;

            if( track->GetState( END_ON_PAD ) )
                type_end |= END_ON_PAD;

            // if the track start point is not connected to a pad,
            // test if this track start point is connected to another track
            // For via test, an enhancement could be to test if connected
            // to 2 items on different layers.
            // Currently a via must be connected to 2 items, that can be on the same layer
            LAYER_NUM top_layer, bottom_layer;
            ZONE_CONTAINER* zone;

            if( (type_end & START_ON_PAD ) == 0 )
            {
                TRACK* other = track->GetTrace( m_Brd->m_Track, NULL, FLG_START );

                if( other == NULL )     // Test a connection to zones
                {
                    if( track->Type() != PCB_VIA_T )
                    {
                        zone = m_Brd->HitTestForAnyFilledArea( track->GetStart(),
                                                               track->GetLayer(),
                                                               track->GetLayer(),
                                                               track->GetNet() );
                    }
                    else
                    {
                        ((SEGVIA*)track)->ReturnLayerPair( &top_layer, &bottom_layer );
                        zone = m_Brd->HitTestForAnyFilledArea( track->GetStart(),
                                                               top_layer, bottom_layer,
                                                               track->GetNet() );
                    }
                }

                if( (other == NULL) && (zone == NULL) )
                {
                    flag_erase |= 1;
                }
                else    // segment, via or zone connected to this end
                {
                    track->start = other;
                    // If a via is connected to this end,
                    // test if this via has a second item connected.
                    // If no, remove it with the current segment

                    if( other && other->Type() == PCB_VIA_T )
                    {
                        // search for another segment following the via
                        track->SetState( BUSY, true );

                        SEGVIA* via = (SEGVIA*) other;
                        other = via->GetTrace( m_Brd->m_Track, NULL, FLG_START );

                        if( other == NULL )
                        {
                            via->ReturnLayerPair( &top_layer, &bottom_layer );
                            zone = m_Brd->HitTestForAnyFilledArea( via->GetStart(),
                                                                   bottom_layer,
                                                                   top_layer,
                                                                   via->GetNet() );
                        }

                        if( (other == NULL) && (zone == NULL) )
                            flag_erase |= 2;

                        track->SetState( BUSY, false );
                    }
                }
            }

            // if track end point is not connected to a pad,
            // test if this track end point is connected to an other track
            if( (type_end & END_ON_PAD ) == 0 )
            {
                TRACK* other = track->GetTrace( m_Brd->m_Track, NULL, FLG_END );

                if( other == NULL )     // Test a connection to zones
                {
                    if( track->Type() != PCB_VIA_T )
                    {
                        zone = m_Brd->HitTestForAnyFilledArea( track->GetEnd(),
                                                               track->GetLayer(),
                                                               track->GetLayer(),
                                                               track->GetNet() );
                    }
                    else
                    {
                        ((SEGVIA*)track)->ReturnLayerPair( &top_layer, &bottom_layer );
                        zone = m_Brd->HitTestForAnyFilledArea( track->GetEnd(),
                                                               top_layer, bottom_layer,
                                                               track->GetNet() );
                    }
                }

                if ( (other == NULL) && (zone == NULL) )
                {
                    flag_erase |= 0x10;
                }
                else     // segment, via or zone connected to this end
                {
                    track->end = other;

                    // If a via is connected to this end, test if this via has a second item connected
                    // if no, remove it with the current segment

                    if( other && other->Type() == PCB_VIA_T )
                    {
                        // search for another segment following the via

                        track->SetState( BUSY, true );

                        SEGVIA* via = (SEGVIA*) other;
                        other = via->GetTrace( m_Brd->m_Track, NULL, FLG_END );

                        if( other == NULL )
                        {
                            via->ReturnLayerPair( &top_layer, &bottom_layer );
                            zone = m_Brd->HitTestForAnyFilledArea( via->GetEnd(),
                                                                   bottom_layer, top_layer,
                                                                   via->GetNet() );
                        }

                        if( (other == NULL) && (zone == NULL) )
                            flag_erase |= 0x20;

                        track->SetState( BUSY, false );
                    }
                }
            }

            if( flag_erase )
            {
                // remove segment from board
                track->DeleteStructure();
                // iterate, because a track connected to the deleted track
                // is now perhaps now not connected and should be deleted
                item_erased = true;
                modified = true;
            }
        }
    }

    return modified;
}