C++ PNS_LINE::CLine方法代码示例

bool PNS_TOPOLOGY::followTrivialPath( PNS_LINE* aLine, bool aLeft, PNS_ITEMSET& aSet, std::set<PNS_ITEM*>& aVisited )
{
    VECTOR2I anchor = aLeft ? aLine->CPoint( 0 ) : aLine->CPoint( -1 );
    PNS_SEGMENT* last = aLeft ? aLine->LinkedSegments()->front() : aLine->LinkedSegments()->back();
    PNS_JOINT* jt = m_world->FindJoint( anchor, aLine );

    assert( jt != NULL );

    aVisited.insert( last );

    if( jt->IsNonFanoutVia() || jt->IsTraceWidthChange() )
    {
        PNS_ITEM* via = NULL;
        PNS_SEGMENT* next_seg = NULL;

        for( PNS_ITEM* link : jt->Links().Items() )
        {
            if( link->OfKind( PNS_ITEM::VIA ) )
                via = link;
            else if( aVisited.find( link ) == aVisited.end() )
                next_seg = static_cast<PNS_SEGMENT*>( link );
        }

        if( !next_seg )
            return false;

        PNS_LINE l = m_world->AssembleLine( next_seg );

        VECTOR2I nextAnchor = ( aLeft ? l.CLine().CPoint( -1 ) : l.CLine().CPoint( 0 ) );

        if( nextAnchor != anchor )
        {
            l.Reverse();
        }

        if( aLeft )
        {
            if( via )
                aSet.Prepend( via );

            aSet.Prepend( l );
        }
        else
        {
            if( via )
                aSet.Add( via );

            aSet.Add( l );
        }

        return followTrivialPath( &l, aLeft, aSet, aVisited );
    }

    return false;
}

void PNS_LINE_PLACER::removeLoops( PNS_NODE* aNode, PNS_LINE& aLatest )
{
    if( !aLatest.SegmentCount() )
        return;

    if( aLatest.CLine().CPoint( 0 ) == aLatest.CLine().CPoint( -1 ) )
        return;

    std::set<PNS_SEGMENT *> toErase;
    aNode->Add( &aLatest, true );

    for( int s = 0; s < aLatest.LinkCount(); s++ )
    {
        PNS_SEGMENT* seg = ( *aLatest.LinkedSegments() )[s];
        PNS_LINE ourLine = aNode->AssembleLine( seg );
        PNS_JOINT a, b;
        std::vector<PNS_LINE> lines;

        aNode->FindLineEnds( ourLine, a, b );

        if( a == b )
        {
            aNode->FindLineEnds( aLatest, a, b );
        }

        aNode->FindLinesBetweenJoints( a, b, lines );

        int removedCount = 0;
        int total = 0;

        for( PNS_LINE& line : lines )
        {
            total++;

            if( !( line.ContainsSegment( seg ) ) && line.SegmentCount() )
            {
                for( PNS_SEGMENT *ss : *line.LinkedSegments() )
                    toErase.insert( ss );

                removedCount++;
            }
        }

        TRACE( 0, "total segs removed: %d/%d\n", removedCount % total );
    }

    for( PNS_SEGMENT *s : toErase )
        aNode->Remove( s );

    aNode->Remove( &aLatest );
}

void PNS_LINE_PLACER::simplifyNewLine( PNS_NODE* aNode, PNS_SEGMENT* aLatest )
{
    PNS_LINE l = aNode->AssembleLine( aLatest );
    SHAPE_LINE_CHAIN simplified( l.CLine() );

    simplified.Simplify();

    if( simplified.PointCount() != l.PointCount() )
    {
        PNS_LINE lnew( l );
        aNode->Remove( &l );
        lnew.SetShape( simplified );
        aNode->Add( &lnew );
    }
}

bool PNS_TOPOLOGY::SimplifyLine( PNS_LINE* aLine )
{
    if( !aLine->LinkedSegments() || !aLine->SegmentCount() )
        return false;

    PNS_SEGMENT* root = ( *aLine->LinkedSegments() )[0];
    PNS_LINE l = m_world->AssembleLine( root );
    SHAPE_LINE_CHAIN simplified( l.CLine() );

    simplified.Simplify();

    if( simplified.PointCount() != l.PointCount() )
    {
        PNS_LINE lnew( l );
        m_world->Remove( &l );
        lnew.SetShape( simplified );
        m_world->Add( &lnew );
        return true;
    }

    return false;
}

bool PNS_LINE_PLACER::Move( const VECTOR2I& aP, PNS_ITEM* aEndItem )
{
    PNS_LINE current;
    VECTOR2I p = aP;
    int eiDepth = -1;

    if( aEndItem && aEndItem->Owner() )
        eiDepth = aEndItem->Owner()->Depth();

    if( m_lastNode )
    {
        delete m_lastNode;
        m_lastNode = NULL;
    }

    route( p );

    current = Trace();

    if( !current.PointCount() )
        m_currentEnd = m_p_start;
    else
        m_currentEnd = current.CLine().CPoint( -1 );

    PNS_NODE* latestNode = m_currentNode;
    m_lastNode = latestNode->Branch();

    if( eiDepth >= 0 && aEndItem && latestNode->Depth() > eiDepth &&
            current.SegmentCount() )
    {
        splitAdjacentSegments( m_lastNode, aEndItem, current.CPoint( -1 ) );

        if( Settings().RemoveLoops() )
            removeLoops( m_lastNode, &current );
    }

    updateLeadingRatLine();
    return true;
}

bool PNS_LINE_PLACER::FixRoute( const VECTOR2I& aP, PNS_ITEM* aEndItem )
{
    bool realEnd = false;
    int lastV;

    PNS_LINE pl = Trace();

    if( m_currentMode == RM_MarkObstacles &&
        !Settings().CanViolateDRC() &&
        m_world->CheckColliding( &pl ) )
            return false;

    const SHAPE_LINE_CHAIN& l = pl.CLine();

    if( !l.SegmentCount() )
    {
        if( pl.EndsWithVia() )
        {
            m_lastNode->Add( pl.Via().Clone() );
            Router()->CommitRouting( m_lastNode );

            m_lastNode = NULL;
            m_currentNode = NULL;

            m_idle = true;
        }

        return true;
    }

    VECTOR2I p_pre_last = l.CPoint( -1 );
    const VECTOR2I p_last = l.CPoint( -1 );
    DIRECTION_45 d_last( l.CSegment( -1 ) );

    if( l.PointCount() > 2 )
        p_pre_last = l.CPoint( -2 );

    if( aEndItem && m_currentNet >= 0 && m_currentNet == aEndItem->Net() )
        realEnd = true;

    if( realEnd || m_placingVia )
        lastV = l.SegmentCount();
    else
        lastV = std::max( 1, l.SegmentCount() - 1 );

    PNS_SEGMENT* lastSeg = NULL;

    for( int i = 0; i < lastV; i++ )
    {
        const SEG& s = pl.CSegment( i );
        PNS_SEGMENT* seg = new PNS_SEGMENT( s, m_currentNet );
        seg->SetWidth( pl.Width() );
        seg->SetLayer( m_currentLayer );
        m_lastNode->Add( seg );
        lastSeg = seg;
    }

    if( pl.EndsWithVia() )
        m_lastNode->Add( pl.Via().Clone() );

    if( realEnd )
        simplifyNewLine( m_lastNode, lastSeg );

    Router()->CommitRouting( m_lastNode );

    m_lastNode = NULL;
    m_currentNode = NULL;

    if( !realEnd )
    {
        setInitialDirection( d_last );
        m_currentStart = m_placingVia ? p_last : p_pre_last;
        m_startItem = NULL;
        m_placingVia = false;
        m_chainedPlacement = !pl.EndsWithVia();
        m_splitSeg = false;
        initPlacement();
    }
    else
    {
        m_idle = true;
    }

    return realEnd;
}

bool PNS_LINE_PLACER::optimizeTailHeadTransition()
{
    PNS_LINE tmp = Trace();

    if( PNS_OPTIMIZER::Optimize( &tmp, PNS_OPTIMIZER::FANOUT_CLEANUP, m_currentNode ) )
    {
        if( tmp.SegmentCount() < 1 )
            return false;

        m_head = tmp;
        m_p_start = tmp.CLine().CPoint( 0 );
        m_direction = DIRECTION_45( tmp.CSegment( 0 ) );
        m_tail.Line().Clear();

        return true;
    }

    SHAPE_LINE_CHAIN& head = m_head.Line();
    SHAPE_LINE_CHAIN& tail = m_tail.Line();

    int tailLookbackSegments = 3;

    //if(m_currentMode() == RM_Walkaround)
    //    tailLookbackSegments = 10000;

    int threshold = std::min( tail.PointCount(), tailLookbackSegments + 1 );

    if( tail.SegmentCount() < 3 )
        return false;

    // assemble TailLookbackSegments tail segments with the current head
    SHAPE_LINE_CHAIN opt_line = tail.Slice( -threshold, -1 );

    int end = std::min(2, head.PointCount() - 1 );

    opt_line.Append( head.Slice( 0, end ) );

    PNS_LINE new_head( m_tail, opt_line );

    // and see if it could be made simpler by merging obtuse/collnear segments.
    // If so, replace the (threshold) last tail points and the head with
    // the optimized line

    if( PNS_OPTIMIZER::Optimize( &new_head, PNS_OPTIMIZER::MERGE_OBTUSE, m_currentNode ) )
    {
        PNS_LINE tmp( m_tail, opt_line );

        TRACE( 0, "Placer: optimize tail-head [%d]", threshold );

        head.Clear();
        tail.Replace( -threshold, -1, new_head.CLine() );
        tail.Simplify();

        m_p_start = new_head.CLine().CPoint( -1 );
        m_direction = DIRECTION_45( new_head.CSegment( -1 ) );

        return true;
    }

    return false;
}

PNS_WALKAROUND::WALKAROUND_STATUS PNS_WALKAROUND::Route( const PNS_LINE& aInitialPath,
        PNS_LINE& aWalkPath, bool aOptimize )
{
    PNS_LINE path_cw( aInitialPath ), path_ccw( aInitialPath );
    WALKAROUND_STATUS s_cw = IN_PROGRESS, s_ccw = IN_PROGRESS;
    SHAPE_LINE_CHAIN best_path;

    start( aInitialPath );

    m_currentObstacle[0] = m_currentObstacle[1] = nearestObstacle( aInitialPath );
    m_recursiveBlockageCount = 0;

    aWalkPath = aInitialPath;

    if( m_forceWinding )
    {
        s_cw = m_forceCw ? IN_PROGRESS : STUCK;
        s_ccw = m_forceCw ? STUCK : IN_PROGRESS;
        m_forceSingleDirection = true;
    } else {
        m_forceSingleDirection = false;
    }

    while( m_iteration < m_iterationLimit )
    {
        if( s_cw != STUCK )
            s_cw = singleStep( path_cw, true );

        if( s_ccw != STUCK )
            s_ccw = singleStep( path_ccw, false );

        if( ( s_cw == DONE && s_ccw == DONE ) || ( s_cw == STUCK && s_ccw == STUCK ) )
        {
            int len_cw  = path_cw.CLine().Length();
            int len_ccw = path_ccw.CLine().Length();

            if( m_forceLongerPath )
                aWalkPath = ( len_cw > len_ccw ? path_cw : path_ccw );
            else
                aWalkPath = ( len_cw < len_ccw ? path_cw : path_ccw );

            break;
        }
        else if( s_cw == DONE && !m_forceLongerPath )
        {
            aWalkPath = path_cw;
            break;
        }
        else if( s_ccw == DONE && !m_forceLongerPath )
        {
            aWalkPath = path_ccw;
            break;
        }

        m_iteration++;
    }

    if( m_iteration == m_iterationLimit )
    {
        int len_cw  = path_cw.CLine().Length();
        int len_ccw = path_ccw.CLine().Length();

        if( m_forceLongerPath )
            aWalkPath = ( len_cw > len_ccw ? path_cw : path_ccw );
        else
            aWalkPath = ( len_cw < len_ccw ? path_cw : path_ccw );
    }

    if( m_cursorApproachMode )
    {
        // int len_cw = path_cw.GetCLine().Length();
        // int len_ccw = path_ccw.GetCLine().Length();
        bool found = false;

        SHAPE_LINE_CHAIN l = aWalkPath.CLine();

        for( int i = 0; i < l.SegmentCount(); i++ )
        {
            const SEG s = l.Segment( i );

            VECTOR2I nearest = s.NearestPoint( m_cursorPos );
            VECTOR2I::extended_type dist_a = ( s.A - m_cursorPos ).SquaredEuclideanNorm();
            VECTOR2I::extended_type dist_b = ( s.B - m_cursorPos ).SquaredEuclideanNorm();
            VECTOR2I::extended_type dist_n = ( nearest - m_cursorPos ).SquaredEuclideanNorm();

            if( dist_n <= dist_a && dist_n < dist_b )
            {
                l.Remove( i + 1, -1 );
                l.Append( nearest );
                l.Simplify();
                found = true;
                break;
            }
        }

        if( found )
        {
            aWalkPath = aInitialPath;
            aWalkPath.SetShape( l );
        }
//.........这里部分代码省略.........

bool PNS_DIFF_PAIR_PLACER::attemptWalk( PNS_NODE* aNode, PNS_DIFF_PAIR* aCurrent,
        PNS_DIFF_PAIR& aWalk, bool aPFirst, bool aWindCw, bool aSolidsOnly )
{
    PNS_WALKAROUND walkaround( aNode, Router() );
    PNS_WALKAROUND::WALKAROUND_STATUS wf1;

    Router()->GetRuleResolver()->OverrideClearance( true,
            aCurrent->NetP(), aCurrent->NetN(), aCurrent->Gap() );

    walkaround.SetSolidsOnly( aSolidsOnly );
    walkaround.SetIterationLimit( Settings().WalkaroundIterationLimit() );

    PNS_SHOVE shove( aNode, Router() );
    PNS_LINE walkP, walkN;

    aWalk = *aCurrent;

    int iter = 0;

    PNS_DIFF_PAIR cur( *aCurrent );

    bool currentIsP = aPFirst;

    int mask = aSolidsOnly ? PNS_ITEM::SOLID : PNS_ITEM::ANY;

    do
    {
        PNS_LINE preWalk = ( currentIsP ? cur.PLine() : cur.NLine() );
        PNS_LINE preShove = ( currentIsP ? cur.NLine() : cur.PLine() );
        PNS_LINE postWalk;

        if( !aNode->CheckColliding ( &preWalk, mask ) )
        {
            currentIsP = !currentIsP;

            if( !aNode->CheckColliding( &preShove, mask ) )
                break;
            else
                continue;
        }

        wf1 = walkaround.Route( preWalk, postWalk, false );

        if( wf1 != PNS_WALKAROUND::DONE )
            return false;

        PNS_LINE postShove( preShove );

        shove.ForceClearance( true, cur.Gap() - 2 * PNS_HULL_MARGIN );

        PNS_SHOVE::SHOVE_STATUS sh1;

        sh1 = shove.ProcessSingleLine( postWalk, preShove, postShove );

        if( sh1 != PNS_SHOVE::SH_OK )
            return false;

        postWalk.Line().Simplify();
        postShove.Line().Simplify();

        cur.SetShape( postWalk.CLine(), postShove.CLine(), !currentIsP );

        currentIsP = !currentIsP;

        if( !aNode->CheckColliding( &postShove, mask ) )
            break;

        iter++;
    }
    while( iter < 3 );

    if( iter == 3 )
        return false;

    aWalk.SetShape( cur.CP(), cur.CN() );
    Router()->GetRuleResolver()->OverrideClearance( false );

    return true;
}