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/*
* KiRouter - a push-and-(sometimes-)shove PCB router
*
* Copyright (C) 2013-2015 CERN
* Author: Tomasz Wlostowski <tomasz.wlostowski@cern.ch>
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation, either version 3 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <boost/foreach.hpp>
#include <base_units.h> // God forgive me doing this...
#include <colors.h>
#include "trace.h"
#include "pns_node.h"
#include "pns_itemset.h"
#include "pns_topology.h"
#include "pns_meander_skew_placer.h"
#include "pns_router.h"
PNS_MEANDER_SKEW_PLACER::PNS_MEANDER_SKEW_PLACER ( PNS_ROUTER* aRouter ) :
PNS_MEANDER_PLACER ( aRouter )
{
// Init temporary variables (do not leave uninitialized members)
m_coupledLength = 0;
}
PNS_MEANDER_SKEW_PLACER::~PNS_MEANDER_SKEW_PLACER( )
{
}
bool PNS_MEANDER_SKEW_PLACER::Start( const VECTOR2I& aP, PNS_ITEM* aStartItem )
{
VECTOR2I p;
if( !aStartItem || !aStartItem->OfKind( PNS_ITEM::SEGMENT ) )
{
Router()->SetFailureReason( _( "Please select a differential pair trace you want to tune." ) );
return false;
}
m_initialSegment = static_cast<PNS_SEGMENT*>( aStartItem );
p = m_initialSegment->Seg().NearestPoint( aP );
m_currentNode = NULL;
m_currentStart = p;
m_world = Router()->GetWorld( )->Branch();
m_originLine = m_world->AssembleLine( m_initialSegment );
PNS_TOPOLOGY topo( m_world );
m_tunedPath = topo.AssembleTrivialPath( m_initialSegment );
if( !topo.AssembleDiffPair ( m_initialSegment, m_originPair ) )
{
Router()->SetFailureReason( _( "Unable to find complementary differential pair "
"net for skew tuning. Make sure the names of the nets belonging "
"to a differential pair end with either _N/_P or +/-." ) );
return false;
}
if( m_originPair.Gap() < 0 )
m_originPair.SetGap( Router()->Sizes().DiffPairGap() );
if( !m_originPair.PLine().SegmentCount() ||
!m_originPair.NLine().SegmentCount() )
return false;
m_tunedPathP = topo.AssembleTrivialPath( m_originPair.PLine().GetLink( 0 ) );
m_tunedPathN = topo.AssembleTrivialPath( m_originPair.NLine().GetLink( 0 ) );
m_world->Remove( &m_originLine );
m_currentWidth = m_originLine.Width();
m_currentEnd = VECTOR2I( 0, 0 );
if ( m_originPair.PLine().Net() == m_originLine.Net() )
m_coupledLength = itemsetLength( m_tunedPathN );
else
m_coupledLength = itemsetLength( m_tunedPathP );
return true;
}
int PNS_MEANDER_SKEW_PLACER::origPathLength( ) const
{
return itemsetLength ( m_tunedPath );
}
int PNS_MEANDER_SKEW_PLACER::itemsetLength( const PNS_ITEMSET& aSet ) const
{
int total = 0;
BOOST_FOREACH( const PNS_ITEM* item, aSet.CItems() )
{
if( const PNS_LINE* l = dyn_cast<const PNS_LINE*>( item ) )
{
total += l->CLine().Length();
}
}
return total;
}
int PNS_MEANDER_SKEW_PLACER::currentSkew() const
{
return m_lastLength - m_coupledLength;
}
bool PNS_MEANDER_SKEW_PLACER::Move( const VECTOR2I& aP, PNS_ITEM* aEndItem )
{
BOOST_FOREACH( const PNS_ITEM* item, m_tunedPathP.CItems() )
{
if( const PNS_LINE* l = dyn_cast<const PNS_LINE*>( item ) )
Router()->DisplayDebugLine( l->CLine(), 5, 10000 );
}
BOOST_FOREACH( const PNS_ITEM* item, m_tunedPathN.CItems() )
{
if( const PNS_LINE* l = dyn_cast<const PNS_LINE*>( item ) )
Router()->DisplayDebugLine( l->CLine(), 4, 10000 );
}
return doMove( aP, aEndItem, m_coupledLength + m_settings.m_targetSkew );
}
const wxString PNS_MEANDER_SKEW_PLACER::TuningInfo() const
{
wxString status;
switch( m_lastStatus )
{
case TOO_LONG:
status = _( "Too long: skew " );
break;
case TOO_SHORT:
status = _( "Too short: skew " );
break;
case TUNED:
status = _( "Tuned: skew " );
break;
default:
return _( "?" );
}
status += LengthDoubleToString( (double) m_lastLength - m_coupledLength, false );
status += "/";
status += LengthDoubleToString( (double) m_settings.m_targetSkew, false );
return status;
}
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