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;
}