1546 lines
42 KiB
C++
1546 lines
42 KiB
C++
/*
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* KiRouter - a push-and-(sometimes-)shove PCB router
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*
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* Copyright (C) 2013-2014 CERN
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* Copyright (C) 2016-2023 KiCad Developers, see AUTHORS.txt for contributors.
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* Author: Tomasz Wlostowski <tomasz.wlostowski@cern.ch>
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*
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* This program is free software: you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation, either version 3 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <geometry/shape_line_chain.h>
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#include <geometry/shape_rect.h>
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#include <geometry/shape_simple.h>
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#include <cmath>
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#include "pns_arc.h"
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#include "pns_line.h"
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#include "pns_diff_pair.h"
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#include "pns_node.h"
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#include "pns_solid.h"
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#include "pns_optimizer.h"
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#include "pns_utils.h"
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#include "pns_router.h"
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#include "pns_debug_decorator.h"
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namespace PNS {
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int COST_ESTIMATOR::CornerCost( const SEG& aA, const SEG& aB )
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{
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DIRECTION_45 dir_a( aA ), dir_b( aB );
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switch( dir_a.Angle( dir_b ) )
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{
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case DIRECTION_45::ANG_OBTUSE: return 10;
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case DIRECTION_45::ANG_STRAIGHT: return 5;
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case DIRECTION_45::ANG_ACUTE: return 50;
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case DIRECTION_45::ANG_RIGHT: return 30;
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case DIRECTION_45::ANG_HALF_FULL: return 60;
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default: return 100;
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}
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}
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int COST_ESTIMATOR::CornerCost( const SHAPE_LINE_CHAIN& aLine )
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{
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int total = 0;
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for( int i = 0; i < aLine.SegmentCount() - 1; ++i )
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total += CornerCost( aLine.CSegment( i ), aLine.CSegment( i + 1 ) );
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return total;
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}
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int COST_ESTIMATOR::CornerCost( const LINE& aLine )
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{
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return CornerCost( aLine.CLine() );
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}
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void COST_ESTIMATOR::Add( const LINE& aLine )
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{
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m_lengthCost += aLine.CLine().Length();
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m_cornerCost += CornerCost( aLine );
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}
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void COST_ESTIMATOR::Remove( const LINE& aLine )
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{
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m_lengthCost -= aLine.CLine().Length();
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m_cornerCost -= CornerCost( aLine );
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}
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void COST_ESTIMATOR::Replace( const LINE& aOldLine, const LINE& aNewLine )
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{
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m_lengthCost -= aOldLine.CLine().Length();
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m_cornerCost -= CornerCost( aOldLine );
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m_lengthCost += aNewLine.CLine().Length();
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m_cornerCost += CornerCost( aNewLine );
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}
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bool COST_ESTIMATOR::IsBetter( const COST_ESTIMATOR& aOther, double aLengthTolerance,
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double aCornerTolerance ) const
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{
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if( aOther.m_cornerCost < m_cornerCost && aOther.m_lengthCost < m_lengthCost )
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return true;
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else if( aOther.m_cornerCost < m_cornerCost * aCornerTolerance &&
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aOther.m_lengthCost < m_lengthCost * aLengthTolerance )
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return true;
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return false;
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}
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OPTIMIZER::OPTIMIZER( NODE* aWorld ) :
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m_world( aWorld ),
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m_collisionKindMask( ITEM::ANY_T ),
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m_effortLevel( MERGE_SEGMENTS ),
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m_restrictAreaIsStrict( false )
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{
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}
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OPTIMIZER::~OPTIMIZER()
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{
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for( OPT_CONSTRAINT* c : m_constraints )
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delete c;
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m_constraints.clear();
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}
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struct OPTIMIZER::CACHE_VISITOR
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{
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CACHE_VISITOR( const ITEM* aOurItem, NODE* aNode, int aMask ) :
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m_ourItem( aOurItem ),
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m_collidingItem( nullptr ),
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m_node( aNode ),
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m_mask( aMask )
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{}
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bool operator()( ITEM* aOtherItem )
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{
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if( !( m_mask & aOtherItem->Kind() ) )
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return true;
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if( !aOtherItem->Collide( m_ourItem, m_node ) )
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return true;
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m_collidingItem = aOtherItem;
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return false;
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}
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const ITEM* m_ourItem;
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ITEM* m_collidingItem;
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NODE* m_node;
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int m_mask;
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};
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void OPTIMIZER::cacheAdd( ITEM* aItem, bool aIsStatic = false )
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{
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if( m_cacheTags.find( aItem ) != m_cacheTags.end() )
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return;
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m_cache.Add( aItem );
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m_cacheTags[aItem].m_hits = 1;
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m_cacheTags[aItem].m_isStatic = aIsStatic;
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}
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void OPTIMIZER::removeCachedSegments( LINE* aLine, int aStartVertex, int aEndVertex )
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{
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if( !aLine->IsLinked() )
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return;
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auto links = aLine->Links();
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if( aEndVertex < 0 )
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aEndVertex += aLine->PointCount();
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for( int i = aStartVertex; i < aEndVertex - 1; i++ )
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{
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LINKED_ITEM* s = links[i];
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m_cacheTags.erase( s );
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m_cache.Remove( s );
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}
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}
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void OPTIMIZER::CacheRemove( ITEM* aItem )
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{
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if( aItem->Kind() == ITEM::LINE_T )
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removeCachedSegments( static_cast<LINE*>( aItem ) );
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}
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void OPTIMIZER::ClearCache( bool aStaticOnly )
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{
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if( !aStaticOnly )
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{
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m_cacheTags.clear();
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m_cache.Clear();
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return;
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}
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for( auto i = m_cacheTags.begin(); i!= m_cacheTags.end(); ++i )
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{
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if( i->second.m_isStatic )
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{
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m_cache.Remove( i->first );
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m_cacheTags.erase( i->first );
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}
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}
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}
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bool AREA_CONSTRAINT::Check( int aVertex1, int aVertex2, const LINE* aOriginLine,
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const SHAPE_LINE_CHAIN& aCurrentPath,
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const SHAPE_LINE_CHAIN& aReplacement )
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{
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const VECTOR2I& p1 = aOriginLine->CPoint( aVertex1 );
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const VECTOR2I& p2 = aOriginLine->CPoint( aVertex2 );
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bool p1_in = m_allowedArea.Contains( p1 );
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bool p2_in = m_allowedArea.Contains( p2 );
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if( m_allowedAreaStrict ) // strict restriction? both points must be inside the restricted area
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return p1_in && p2_in;
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else // loose restriction
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return p1_in || p2_in;
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}
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bool PRESERVE_VERTEX_CONSTRAINT::Check( int aVertex1, int aVertex2, const LINE* aOriginLine,
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const SHAPE_LINE_CHAIN& aCurrentPath,
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const SHAPE_LINE_CHAIN& aReplacement )
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{
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bool cv = false;
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for( int i = aVertex1; i < aVertex2; i++ )
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{
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SEG::ecoord dist = aCurrentPath.CSegment(i).SquaredDistance( m_v );
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if ( dist <= 1 )
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{
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cv = true;
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break;
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}
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}
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if( !cv )
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return true;
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for( int i = 0; i < aReplacement.SegmentCount(); i++ )
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{
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SEG::ecoord dist = aReplacement.CSegment(i).SquaredDistance( m_v );
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if ( dist <= 1 )
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return true;
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}
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return false;
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}
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bool RESTRICT_VERTEX_RANGE_CONSTRAINT::Check( int aVertex1, int aVertex2, const LINE* aOriginLine,
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const SHAPE_LINE_CHAIN& aCurrentPath,
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const SHAPE_LINE_CHAIN& aReplacement )
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{
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return true;
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}
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bool CORNER_COUNT_LIMIT_CONSTRAINT::Check( int aVertex1, int aVertex2, const LINE* aOriginLine,
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const SHAPE_LINE_CHAIN& aCurrentPath,
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const SHAPE_LINE_CHAIN& aReplacement )
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{
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LINE newPath( *aOriginLine, aCurrentPath );
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newPath.Line().Replace( aVertex1, aVertex2, aReplacement );
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newPath.Line().Simplify();
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int cc = newPath.CountCorners( m_angleMask );
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if( cc >= m_minCorners )
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return true;
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// fixme: something fishy with the max corneriness limit
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// (cc <= m_maxCorners)
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return false;
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}
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/**
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* Determine if a point is located within a given polygon
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*
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* @todo fixme: integrate into SHAPE_LINE_CHAIN, check corner cases against current PointInside
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* implementation
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*
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* @param aL Polygon
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* @param aP Point to check for location within the polygon
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*
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* @return false if point is not polygon boundary aL, true if within or on the polygon boundary
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*/
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static bool pointInside2( const SHAPE_LINE_CHAIN& aL, const VECTOR2I& aP )
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{
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if( !aL.IsClosed() || aL.SegmentCount() < 3 )
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return false;
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int result = 0;
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size_t cnt = aL.PointCount();
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VECTOR2I ip = aL.CPoint( 0 );
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for( size_t i = 1; i <= cnt; ++i )
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{
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VECTOR2I ipNext = ( i == cnt ? aL.CPoint( 0 ) : aL.CPoint( i ) );
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if( ipNext.y == aP.y )
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{
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if( ( ipNext.x == aP.x )
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|| ( ip.y == aP.y && ( ( ipNext.x > aP.x ) == ( ip.x < aP.x ) ) ) )
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return true; // pt on polyground boundary
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}
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if( ( ip.y < aP.y ) != ( ipNext.y < aP.y ) )
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{
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if( ip.x >=aP.x )
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{
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if( ipNext.x >aP.x )
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{
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result = 1 - result;
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}
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else
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{
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double d = static_cast<double>( ip.x - aP.x ) *
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static_cast<double>( ipNext.y - aP.y ) -
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static_cast<double>( ipNext.x - aP.x ) *
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static_cast<double>( ip.y - aP.y );
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if( !d )
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return true; // pt on polyground boundary
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if( ( d > 0 ) == ( ipNext.y > ip.y ) )
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result = 1 - result;
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}
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}
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else
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{
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if( ipNext.x >aP.x )
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{
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double d = ( (double) ip.x - aP.x ) * ( (double) ipNext.y - aP.y )
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- ( (double) ipNext.x - aP.x ) * ( (double) ip.y - aP.y );
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if( !d )
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return true; // pt on polyground boundary
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if( ( d > 0 ) == ( ipNext.y > ip.y ) )
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result = 1 - result;
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}
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}
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}
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ip = ipNext;
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}
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return result > 0;
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}
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bool KEEP_TOPOLOGY_CONSTRAINT::Check( int aVertex1, int aVertex2, const LINE* aOriginLine,
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const SHAPE_LINE_CHAIN& aCurrentPath,
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const SHAPE_LINE_CHAIN& aReplacement )
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{
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SHAPE_LINE_CHAIN encPoly = aOriginLine->CLine().Slice( aVertex1, aVertex2 );
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// fixme: this is a remarkably shitty implementation...
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encPoly.Append( aReplacement.Reverse() );
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encPoly.SetClosed( true );
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BOX2I bb = encPoly.BBox();
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std::vector<JOINT*> joints;
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int cnt = m_world->QueryJoints( bb, joints, aOriginLine->Layers(), ITEM::SOLID_T );
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if( !cnt )
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return true;
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for( JOINT* j : joints )
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{
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if( j->Net() == aOriginLine->Net() )
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continue;
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if( pointInside2( encPoly, j->Pos() ) )
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{
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bool falsePositive = false;
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for( int k = 0; k < encPoly.PointCount(); k++ )
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{
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if( encPoly.CPoint(k) == j->Pos() )
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{
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falsePositive = true;
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break;
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}
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}
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if( !falsePositive )
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{
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//dbg->AddPoint(j->Pos(), 5);
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return false;
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}
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}
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}
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return true;
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}
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bool OPTIMIZER::checkColliding( ITEM* aItem, bool aUpdateCache )
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{
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CACHE_VISITOR v( aItem, m_world, m_collisionKindMask );
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return static_cast<bool>( m_world->CheckColliding( aItem ) );
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}
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void OPTIMIZER::addConstraint ( OPT_CONSTRAINT *aConstraint )
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{
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m_constraints.push_back( aConstraint );
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}
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bool OPTIMIZER::checkConstraints( int aVertex1, int aVertex2, LINE* aOriginLine,
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const SHAPE_LINE_CHAIN& aCurrentPath,
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const SHAPE_LINE_CHAIN& aReplacement )
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{
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for( OPT_CONSTRAINT* c : m_constraints )
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{
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if( !c->Check( aVertex1, aVertex2, aOriginLine, aCurrentPath, aReplacement ) )
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return false;
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}
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return true;
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}
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bool OPTIMIZER::checkColliding( LINE* aLine, const SHAPE_LINE_CHAIN& aOptPath )
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{
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LINE tmp( *aLine, aOptPath );
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return checkColliding( &tmp );
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}
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bool OPTIMIZER::mergeObtuse( LINE* aLine )
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{
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SHAPE_LINE_CHAIN& line = aLine->Line();
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int step = line.PointCount() - 3;
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int iter = 0;
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int segs_pre = line.SegmentCount();
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if( step < 0 )
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return false;
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SHAPE_LINE_CHAIN current_path( line );
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while( 1 )
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{
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iter++;
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int n_segs = current_path.SegmentCount();
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int max_step = n_segs - 2;
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if( step > max_step )
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step = max_step;
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if( step < 2 )
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{
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line = current_path;
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return current_path.SegmentCount() < segs_pre;
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}
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bool found_anything = false;
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for( int n = 0; n < n_segs - step; n++ )
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{
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const SEG s1 = current_path.CSegment( n );
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const SEG s2 = current_path.CSegment( n + step );
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SEG s1opt, s2opt;
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if( DIRECTION_45( s1 ).IsObtuse( DIRECTION_45( s2 ) ) )
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{
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VECTOR2I ip = *s1.IntersectLines( s2 );
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s1opt = SEG( s1.A, ip );
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s2opt = SEG( ip, s2.B );
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if( DIRECTION_45( s1opt ).IsObtuse( DIRECTION_45( s2opt ) ) )
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{
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SHAPE_LINE_CHAIN opt_path;
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opt_path.Append( s1opt.A );
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opt_path.Append( s1opt.B );
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opt_path.Append( s2opt.B );
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LINE opt_track( *aLine, opt_path );
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if( !checkColliding( &opt_track ) )
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{
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current_path.Replace( s1.Index() + 1, s2.Index(), ip );
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// removeCachedSegments(aLine, s1.Index(), s2.Index());
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n_segs = current_path.SegmentCount();
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found_anything = true;
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break;
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}
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}
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}
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}
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if( !found_anything )
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{
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if( step <= 2 )
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{
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line = current_path;
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return line.SegmentCount() < segs_pre;
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}
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step--;
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}
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}
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return line.SegmentCount() < segs_pre;
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}
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bool OPTIMIZER::mergeFull( LINE* aLine )
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{
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SHAPE_LINE_CHAIN& line = aLine->Line();
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int step = line.SegmentCount() - 1;
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int segs_pre = line.SegmentCount();
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line.Simplify();
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if( step < 0 )
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return false;
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SHAPE_LINE_CHAIN current_path( line );
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while( 1 )
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{
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int n_segs = current_path.SegmentCount();
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int max_step = n_segs - 2;
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if( step > max_step )
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step = max_step;
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if( step < 1 )
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break;
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bool found_anything = mergeStep( aLine, current_path, step );
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if( !found_anything )
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step--;
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if( !step )
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break;
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}
|
|
|
|
aLine->SetShape( current_path );
|
|
|
|
return current_path.SegmentCount() < segs_pre;
|
|
}
|
|
|
|
|
|
bool OPTIMIZER::mergeColinear( LINE* aLine )
|
|
{
|
|
SHAPE_LINE_CHAIN& line = aLine->Line();
|
|
|
|
int nSegs = line.SegmentCount();
|
|
|
|
for( int segIdx = 0; segIdx < line.SegmentCount() - 1; ++segIdx )
|
|
{
|
|
SEG s1 = line.CSegment( segIdx );
|
|
SEG s2 = line.CSegment( segIdx + 1 );
|
|
|
|
// Skip zero-length segs caused by abutting arcs
|
|
if( s1.SquaredLength() == 0 || s2.SquaredLength() == 0 )
|
|
continue;
|
|
|
|
if( s1.Collinear( s2 ) && !line.IsPtOnArc( segIdx + 1 ) )
|
|
{
|
|
line.Remove( segIdx + 1 );
|
|
}
|
|
}
|
|
|
|
return line.SegmentCount() < nSegs;
|
|
}
|
|
|
|
|
|
bool OPTIMIZER::Optimize( LINE* aLine, LINE* aResult, LINE* aRoot )
|
|
{
|
|
DEBUG_DECORATOR* dbg = ROUTER::GetInstance()->GetInterface()->GetDebugDecorator();
|
|
|
|
if( aRoot )
|
|
{
|
|
PNS_DBG( dbg, AddItem, aRoot, BLUE, 100000, wxT( "root-line" ) );
|
|
}
|
|
|
|
|
|
if( !aResult )
|
|
{
|
|
aResult = aLine;
|
|
}
|
|
else
|
|
{
|
|
*aResult = *aLine;
|
|
aResult->ClearLinks();
|
|
}
|
|
|
|
bool hasArcs = aLine->ArcCount();
|
|
bool rv = false;
|
|
|
|
if( (m_effortLevel & LIMIT_CORNER_COUNT) && aRoot )
|
|
{
|
|
const int angleMask = DIRECTION_45::ANG_OBTUSE;
|
|
int rootObtuseCorners = aRoot->CountCorners( angleMask );
|
|
auto c = new CORNER_COUNT_LIMIT_CONSTRAINT( m_world, rootObtuseCorners,
|
|
aLine->SegmentCount(), angleMask );
|
|
PNS_DBG( dbg, Message,
|
|
wxString::Format( "opt limit-corner-count root %d maxc %d mask %x",
|
|
rootObtuseCorners, aLine->SegmentCount(), angleMask ) );
|
|
|
|
addConstraint( c );
|
|
}
|
|
|
|
if( m_effortLevel & PRESERVE_VERTEX )
|
|
{
|
|
auto c = new PRESERVE_VERTEX_CONSTRAINT( m_world, m_preservedVertex );
|
|
addConstraint( c );
|
|
}
|
|
|
|
if( m_effortLevel & RESTRICT_VERTEX_RANGE )
|
|
{
|
|
auto c = new RESTRICT_VERTEX_RANGE_CONSTRAINT( m_world, m_restrictedVertexRange.first,
|
|
m_restrictedVertexRange.second );
|
|
addConstraint( c );
|
|
}
|
|
|
|
if( m_effortLevel & RESTRICT_AREA )
|
|
{
|
|
auto c = new AREA_CONSTRAINT( m_world, m_restrictArea, m_restrictAreaIsStrict );
|
|
SHAPE_RECT r( m_restrictArea );
|
|
PNS_DBG( dbg, AddShape, &r, YELLOW, 0, wxT( "area-constraint" ) );
|
|
addConstraint( c );
|
|
}
|
|
|
|
if( m_effortLevel & KEEP_TOPOLOGY )
|
|
{
|
|
auto c = new KEEP_TOPOLOGY_CONSTRAINT( m_world );
|
|
addConstraint( c );
|
|
}
|
|
|
|
// TODO: Fix for arcs
|
|
if( !hasArcs && m_effortLevel & MERGE_SEGMENTS )
|
|
rv |= mergeFull( aResult );
|
|
|
|
// TODO: Fix for arcs
|
|
if( !hasArcs && m_effortLevel & MERGE_OBTUSE )
|
|
rv |= mergeObtuse( aResult );
|
|
|
|
if( m_effortLevel & MERGE_COLINEAR )
|
|
rv |= mergeColinear( aResult );
|
|
|
|
// TODO: Fix for arcs
|
|
if( !hasArcs && m_effortLevel & SMART_PADS )
|
|
rv |= runSmartPads( aResult );
|
|
|
|
// TODO: Fix for arcs
|
|
if( !hasArcs && m_effortLevel & FANOUT_CLEANUP )
|
|
rv |= fanoutCleanup( aResult );
|
|
|
|
return rv;
|
|
}
|
|
|
|
|
|
bool OPTIMIZER::mergeStep( LINE* aLine, SHAPE_LINE_CHAIN& aCurrentPath, int step )
|
|
{
|
|
int n_segs = aCurrentPath.SegmentCount();
|
|
|
|
int cost_orig = COST_ESTIMATOR::CornerCost( aCurrentPath );
|
|
|
|
if( aLine->SegmentCount() < 2 )
|
|
return false;
|
|
|
|
DIRECTION_45::CORNER_MODE cornerMode = ROUTER::GetInstance()->Settings().GetCornerMode();
|
|
bool is90mode = cornerMode == DIRECTION_45::MITERED_90 || cornerMode == DIRECTION_45::ROUNDED_90;
|
|
|
|
DIRECTION_45 orig_start( aLine->CSegment( 0 ), is90mode );
|
|
DIRECTION_45 orig_end( aLine->CSegment( -1 ), is90mode );
|
|
|
|
|
|
for( int n = 0; n < n_segs - step; n++ )
|
|
{
|
|
// Do not attempt to merge false segments that are part of an arc
|
|
if( aCurrentPath.IsArcSegment( n )
|
|
|| aCurrentPath.IsArcSegment( static_cast<std::size_t>( n ) + step ) )
|
|
{
|
|
continue;
|
|
}
|
|
|
|
const SEG s1 = aCurrentPath.CSegment( n );
|
|
const SEG s2 = aCurrentPath.CSegment( n + step );
|
|
|
|
SHAPE_LINE_CHAIN path[2];
|
|
SHAPE_LINE_CHAIN* picked = nullptr;
|
|
int cost[2];
|
|
|
|
for( int i = 0; i < 2; i++ )
|
|
{
|
|
SHAPE_LINE_CHAIN bypass = DIRECTION_45().BuildInitialTrace( s1.A, s2.B, i, cornerMode );
|
|
cost[i] = INT_MAX;
|
|
|
|
bool ok = false;
|
|
|
|
if( !checkColliding( aLine, bypass ) )
|
|
{
|
|
ok = checkConstraints ( n, n + step + 1, aLine, aCurrentPath, bypass );
|
|
}
|
|
|
|
if( ok )
|
|
{
|
|
path[i] = aCurrentPath;
|
|
path[i].Replace( s1.Index(), s2.Index(), bypass );
|
|
path[i].Simplify();
|
|
cost[i] = COST_ESTIMATOR::CornerCost( path[i] );
|
|
}
|
|
}
|
|
|
|
if( cost[0] < cost_orig && cost[0] < cost[1] )
|
|
picked = &path[0];
|
|
else if( cost[1] < cost_orig )
|
|
picked = &path[1];
|
|
|
|
if( picked )
|
|
{
|
|
n_segs = aCurrentPath.SegmentCount();
|
|
aCurrentPath = *picked;
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
|
|
OPTIMIZER::BREAKOUT_LIST OPTIMIZER::circleBreakouts( int aWidth, const SHAPE* aShape,
|
|
bool aPermitDiagonal ) const
|
|
{
|
|
BREAKOUT_LIST breakouts;
|
|
|
|
for( EDA_ANGLE angle = ANGLE_0; angle < ANGLE_360; angle += ANGLE_45 )
|
|
{
|
|
const SHAPE_CIRCLE* cir = static_cast<const SHAPE_CIRCLE*>( aShape );
|
|
SHAPE_LINE_CHAIN l;
|
|
VECTOR2I p0 = cir->GetCenter();
|
|
VECTOR2I v0( cir->GetRadius() * M_SQRT2, 0 );
|
|
|
|
RotatePoint( v0, -angle );
|
|
|
|
l.Append( p0 );
|
|
l.Append( p0 + v0 );
|
|
breakouts.push_back( l );
|
|
}
|
|
|
|
return breakouts;
|
|
}
|
|
|
|
|
|
OPTIMIZER::BREAKOUT_LIST OPTIMIZER::customBreakouts( int aWidth, const ITEM* aItem,
|
|
bool aPermitDiagonal ) const
|
|
{
|
|
BREAKOUT_LIST breakouts;
|
|
const SHAPE_SIMPLE* convex = static_cast<const SHAPE_SIMPLE*>( aItem->Shape() );
|
|
|
|
BOX2I bbox = convex->BBox( 0 );
|
|
VECTOR2I p0 = static_cast<const SOLID*>( aItem )->Pos();
|
|
// must be large enough to guarantee intersecting the convex polygon
|
|
int length = std::max( bbox.GetWidth(), bbox.GetHeight() ) / 2 + 5;
|
|
EDA_ANGLE increment = ( aPermitDiagonal ? ANGLE_45 : ANGLE_90 );
|
|
|
|
for( EDA_ANGLE angle = ANGLE_0; angle < ANGLE_360; angle += increment )
|
|
{
|
|
SHAPE_LINE_CHAIN l;
|
|
VECTOR2I v0( p0 + VECTOR2I( length, 0 ) );
|
|
RotatePoint( v0, p0, -angle );
|
|
|
|
SHAPE_LINE_CHAIN::INTERSECTIONS intersections;
|
|
int n = convex->Vertices().Intersect( SEG( p0, v0 ), intersections );
|
|
|
|
// if n == 1 intersected a segment
|
|
// if n == 2 intersected the common point of 2 segments
|
|
// n == 0 can not happen I think, but...
|
|
if( n > 0 )
|
|
{
|
|
l.Append( p0 );
|
|
|
|
// for a breakout distance relative to the distance between
|
|
// center and polygon edge
|
|
//l.Append( intersections[0].p + (v0 - p0).Resize( (intersections[0].p - p0).EuclideanNorm() * 0.4 ) );
|
|
|
|
// for an absolute breakout distance, e.g. 0.1 mm
|
|
//l.Append( intersections[0].p + (v0 - p0).Resize( 100000 ) );
|
|
|
|
// for the breakout right on the polygon edge
|
|
l.Append( intersections[0].p );
|
|
|
|
breakouts.push_back( l );
|
|
}
|
|
}
|
|
|
|
return breakouts;
|
|
}
|
|
|
|
|
|
OPTIMIZER::BREAKOUT_LIST OPTIMIZER::rectBreakouts( int aWidth, const SHAPE* aShape,
|
|
bool aPermitDiagonal ) const
|
|
{
|
|
const SHAPE_RECT* rect = static_cast<const SHAPE_RECT*>(aShape);
|
|
VECTOR2I s = rect->GetSize();
|
|
VECTOR2I c = rect->GetPosition() + VECTOR2I( s.x / 2, s.y / 2 );
|
|
|
|
BREAKOUT_LIST breakouts;
|
|
breakouts.reserve( 12 );
|
|
|
|
VECTOR2I d_offset;
|
|
|
|
d_offset.x = ( s.x > s.y ) ? ( s.x - s.y ) / 2 : 0;
|
|
d_offset.y = ( s.x < s.y ) ? ( s.y - s.x ) / 2 : 0;
|
|
|
|
VECTOR2I d_vert = VECTOR2I( 0, s.y / 2 + aWidth );
|
|
VECTOR2I d_horiz = VECTOR2I( s.x / 2 + aWidth, 0 );
|
|
|
|
breakouts.emplace_back( SHAPE_LINE_CHAIN( { c, c + d_horiz } ) );
|
|
breakouts.emplace_back( SHAPE_LINE_CHAIN( { c, c - d_horiz } ) );
|
|
breakouts.emplace_back( SHAPE_LINE_CHAIN( { c, c + d_vert } ) );
|
|
breakouts.emplace_back( SHAPE_LINE_CHAIN( { c, c - d_vert } ) );
|
|
|
|
if( aPermitDiagonal )
|
|
{
|
|
int l = aWidth + std::min( s.x, s.y ) / 2;
|
|
VECTOR2I d_diag;
|
|
|
|
if( s.x >= s.y )
|
|
{
|
|
breakouts.emplace_back(
|
|
SHAPE_LINE_CHAIN( { c, c + d_offset, c + d_offset + VECTOR2I( l, l ) } ) );
|
|
breakouts.emplace_back(
|
|
SHAPE_LINE_CHAIN( { c, c + d_offset, c + d_offset - VECTOR2I( -l, l ) } ) );
|
|
breakouts.emplace_back(
|
|
SHAPE_LINE_CHAIN( { c, c - d_offset, c - d_offset + VECTOR2I( -l, l ) } ) );
|
|
breakouts.emplace_back(
|
|
SHAPE_LINE_CHAIN( { c, c - d_offset, c - d_offset - VECTOR2I( l, l ) } ) );
|
|
}
|
|
else
|
|
{
|
|
// fixme: this could be done more efficiently
|
|
breakouts.emplace_back(
|
|
SHAPE_LINE_CHAIN( { c, c + d_offset, c + d_offset + VECTOR2I( l, l ) } ) );
|
|
breakouts.emplace_back(
|
|
SHAPE_LINE_CHAIN( { c, c - d_offset, c - d_offset - VECTOR2I( -l, l ) } ) );
|
|
breakouts.emplace_back(
|
|
SHAPE_LINE_CHAIN( { c, c + d_offset, c + d_offset + VECTOR2I( -l, l ) } ) );
|
|
breakouts.emplace_back(
|
|
SHAPE_LINE_CHAIN( { c, c - d_offset, c - d_offset - VECTOR2I( l, l ) } ) );
|
|
}
|
|
}
|
|
|
|
return breakouts;
|
|
}
|
|
|
|
|
|
OPTIMIZER::BREAKOUT_LIST OPTIMIZER::computeBreakouts( int aWidth, const ITEM* aItem,
|
|
bool aPermitDiagonal ) const
|
|
{
|
|
switch( aItem->Kind() )
|
|
{
|
|
case ITEM::VIA_T:
|
|
{
|
|
const VIA* via = static_cast<const VIA*>( aItem );
|
|
return circleBreakouts( aWidth, via->Shape(), aPermitDiagonal );
|
|
}
|
|
|
|
case ITEM::SOLID_T:
|
|
{
|
|
const SHAPE* shape = aItem->Shape();
|
|
|
|
switch( shape->Type() )
|
|
{
|
|
case SH_RECT:
|
|
return rectBreakouts( aWidth, shape, aPermitDiagonal );
|
|
|
|
case SH_SEGMENT:
|
|
{
|
|
const SHAPE_SEGMENT* seg = static_cast<const SHAPE_SEGMENT*> (shape);
|
|
const SHAPE_RECT rect = ApproximateSegmentAsRect ( *seg );
|
|
return rectBreakouts( aWidth, &rect, aPermitDiagonal );
|
|
}
|
|
|
|
case SH_CIRCLE:
|
|
return circleBreakouts( aWidth, shape, aPermitDiagonal );
|
|
|
|
case SH_SIMPLE:
|
|
return customBreakouts( aWidth, aItem, aPermitDiagonal );
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return BREAKOUT_LIST();
|
|
}
|
|
|
|
|
|
ITEM* OPTIMIZER::findPadOrVia( int aLayer, NET_HANDLE aNet, const VECTOR2I& aP ) const
|
|
{
|
|
const JOINT* jt = m_world->FindJoint( aP, aLayer, aNet );
|
|
|
|
if( !jt )
|
|
return nullptr;
|
|
|
|
for( ITEM* item : jt->LinkList() )
|
|
{
|
|
if( item->OfKind( ITEM::VIA_T | ITEM::SOLID_T ) )
|
|
return item;
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
|
|
int OPTIMIZER::smartPadsSingle( LINE* aLine, ITEM* aPad, bool aEnd, int aEndVertex )
|
|
{
|
|
DIRECTION_45 dir;
|
|
|
|
const int ForbiddenAngles = DIRECTION_45::ANG_ACUTE | DIRECTION_45::ANG_RIGHT |
|
|
DIRECTION_45::ANG_HALF_FULL | DIRECTION_45::ANG_UNDEFINED;
|
|
|
|
typedef std::tuple<int, long long int, SHAPE_LINE_CHAIN> RtVariant;
|
|
std::vector<RtVariant> variants;
|
|
|
|
SOLID* solid = dyn_cast<SOLID*>( aPad );
|
|
|
|
// don't do optimized connections for offset pads
|
|
if( solid && solid->Offset() != VECTOR2I( 0, 0 ) )
|
|
return -1;
|
|
|
|
// don't do optimization on vias, they are always round at the moment and the optimizer
|
|
// will possibly mess up an intended via exit posture
|
|
if( aPad->Kind() == ITEM::VIA_T )
|
|
return -1;
|
|
|
|
BREAKOUT_LIST breakouts = computeBreakouts( aLine->Width(), aPad, true );
|
|
SHAPE_LINE_CHAIN line = ( aEnd ? aLine->CLine().Reverse() : aLine->CLine() );
|
|
int p_end = std::min( aEndVertex, std::min( 3, line.PointCount() - 1 ) );
|
|
|
|
// Start at 1 to find a potentially better breakout (0 is the pad connection)
|
|
for( int p = 1; p <= p_end; p++ )
|
|
{
|
|
// If the line is contained inside the pad, don't optimize
|
|
if( solid && solid->Shape() && !solid->Shape()->Collide(
|
|
SEG( line.CPoint( 0 ), line.CPoint( p ) ), aLine->Width() / 2 ) )
|
|
{
|
|
continue;
|
|
}
|
|
|
|
for( SHAPE_LINE_CHAIN & breakout : breakouts )
|
|
{
|
|
for( int diag = 0; diag < 2; diag++ )
|
|
{
|
|
SHAPE_LINE_CHAIN v;
|
|
SHAPE_LINE_CHAIN connect = dir.BuildInitialTrace(
|
|
breakout.CPoint( -1 ), line.CPoint( p ), diag == 0 );
|
|
|
|
DIRECTION_45 dir_bkout( breakout.CSegment( -1 ) );
|
|
|
|
if( !connect.SegmentCount() )
|
|
continue;
|
|
|
|
int ang1 = dir_bkout.Angle( DIRECTION_45( connect.CSegment( 0 ) ) );
|
|
|
|
if( ang1 & ForbiddenAngles )
|
|
continue;
|
|
|
|
if( breakout.Length() > line.Length() )
|
|
continue;
|
|
|
|
v = breakout;
|
|
v.Append( connect );
|
|
|
|
for( int i = p + 1; i < line.PointCount(); i++ )
|
|
v.Append( line.CPoint( i ) );
|
|
|
|
LINE tmp( *aLine, v );
|
|
int cc = tmp.CountCorners( ForbiddenAngles );
|
|
|
|
if( cc == 0 )
|
|
{
|
|
RtVariant vp;
|
|
std::get<0>( vp ) = p;
|
|
std::get<1>( vp ) = breakout.Length();
|
|
std::get<2>( vp ) = aEnd ? v.Reverse() : v;
|
|
std::get<2>( vp ).Simplify();
|
|
variants.push_back( vp );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// We attempt to minimize the corner cost (minimizes the segments and types of corners)
|
|
// but given two, equally valid costs, we want to pick the longer pad exit. The logic
|
|
// here is that if the pad is oblong, the track should not exit the shorter side and parallel
|
|
// the pad but should follow the pad's preferential direction before exiting.
|
|
// The baseline guess is to start with the existing line the user has drawn.
|
|
int min_cost = COST_ESTIMATOR::CornerCost( *aLine );
|
|
long long int max_length = 0;
|
|
bool found = false;
|
|
int p_best = -1;
|
|
SHAPE_LINE_CHAIN l_best;
|
|
|
|
for( RtVariant& vp : variants )
|
|
{
|
|
LINE tmp( *aLine, std::get<2>( vp ) );
|
|
int cost = COST_ESTIMATOR::CornerCost( std::get<2>( vp ) );
|
|
long long int len = std::get<1>( vp );
|
|
|
|
if( !checkColliding( &tmp ) )
|
|
{
|
|
if( cost < min_cost || ( cost == min_cost && len > max_length ) )
|
|
{
|
|
l_best = std::get<2>( vp );
|
|
p_best = std::get<0>( vp );
|
|
found = true;
|
|
|
|
if( cost <= min_cost )
|
|
max_length = std::max<int>( len, max_length );
|
|
|
|
min_cost = std::min( cost, min_cost );
|
|
}
|
|
}
|
|
}
|
|
|
|
if( found )
|
|
{
|
|
aLine->SetShape( l_best );
|
|
return p_best;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
|
|
bool OPTIMIZER::runSmartPads( LINE* aLine )
|
|
{
|
|
SHAPE_LINE_CHAIN& line = aLine->Line();
|
|
|
|
if( line.PointCount() < 3 )
|
|
return false;
|
|
|
|
VECTOR2I p_start = line.CPoint( 0 ), p_end = line.CPoint( -1 );
|
|
|
|
ITEM* startPad = findPadOrVia( aLine->Layer(), aLine->Net(), p_start );
|
|
ITEM* endPad = findPadOrVia( aLine->Layer(), aLine->Net(), p_end );
|
|
|
|
int vtx = -1;
|
|
|
|
if( startPad )
|
|
vtx = smartPadsSingle( aLine, startPad, false, 3 );
|
|
|
|
if( endPad )
|
|
smartPadsSingle( aLine, endPad, true,
|
|
vtx < 0 ? line.PointCount() - 1 : line.PointCount() - 1 - vtx );
|
|
|
|
aLine->Line().Simplify();
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
bool OPTIMIZER::Optimize( LINE* aLine, int aEffortLevel, NODE* aWorld, const VECTOR2I& aV )
|
|
{
|
|
OPTIMIZER opt( aWorld );
|
|
|
|
opt.SetEffortLevel( aEffortLevel );
|
|
opt.SetCollisionMask( -1 );
|
|
|
|
if( aEffortLevel & OPTIMIZER::PRESERVE_VERTEX )
|
|
opt.SetPreserveVertex( aV );
|
|
|
|
return opt.Optimize( aLine );
|
|
}
|
|
|
|
|
|
bool OPTIMIZER::fanoutCleanup( LINE* aLine )
|
|
{
|
|
if( aLine->PointCount() < 3 )
|
|
return false;
|
|
|
|
DIRECTION_45::CORNER_MODE cornerMode = ROUTER::GetInstance()->Settings().GetCornerMode();
|
|
|
|
VECTOR2I p_start = aLine->CPoint( 0 ), p_end = aLine->CPoint( -1 );
|
|
|
|
ITEM* startPad = findPadOrVia( aLine->Layer(), aLine->Net(), p_start );
|
|
ITEM* endPad = findPadOrVia( aLine->Layer(), aLine->Net(), p_end );
|
|
|
|
int thr = aLine->Width() * 10;
|
|
int len = aLine->CLine().Length();
|
|
|
|
if( !startPad )
|
|
return false;
|
|
|
|
bool startMatch = startPad->OfKind( ITEM::VIA_T | ITEM::SOLID_T );
|
|
bool endMatch = false;
|
|
|
|
if(endPad)
|
|
{
|
|
endMatch = endPad->OfKind( ITEM::VIA_T | ITEM::SOLID_T );
|
|
}
|
|
else
|
|
{
|
|
endMatch = aLine->EndsWithVia();
|
|
}
|
|
|
|
if( startMatch && endMatch && len < thr )
|
|
{
|
|
for( int i = 0; i < 2; i++ )
|
|
{
|
|
SHAPE_LINE_CHAIN l2 = DIRECTION_45().BuildInitialTrace( p_start, p_end, i, cornerMode );
|
|
LINE repl;
|
|
repl = LINE( *aLine, l2 );
|
|
|
|
if( !m_world->CheckColliding( &repl ) )
|
|
{
|
|
aLine->SetShape( repl.CLine() );
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
|
|
int findCoupledVertices( const VECTOR2I& aVertex, const SEG& aOrigSeg,
|
|
const SHAPE_LINE_CHAIN& aCoupled, DIFF_PAIR* aPair, int* aIndices )
|
|
{
|
|
int count = 0;
|
|
|
|
for ( int i = 0; i < aCoupled.SegmentCount(); i++ )
|
|
{
|
|
SEG s = aCoupled.CSegment( i );
|
|
VECTOR2I projOverCoupled = s.LineProject ( aVertex );
|
|
|
|
if( s.ApproxParallel( aOrigSeg ) )
|
|
{
|
|
int64_t dist =
|
|
int64_t{ ( ( projOverCoupled - aVertex ).EuclideanNorm() ) } - aPair->Width();
|
|
|
|
if( aPair->GapConstraint().Matches( dist ) )
|
|
{
|
|
*aIndices++ = i;
|
|
count++;
|
|
}
|
|
}
|
|
}
|
|
|
|
return count;
|
|
}
|
|
|
|
|
|
bool verifyDpBypass( NODE* aNode, DIFF_PAIR* aPair, bool aRefIsP, const SHAPE_LINE_CHAIN& aNewRef,
|
|
const SHAPE_LINE_CHAIN& aNewCoupled )
|
|
{
|
|
LINE refLine ( aRefIsP ? aPair->PLine() : aPair->NLine(), aNewRef );
|
|
LINE coupledLine ( aRefIsP ? aPair->NLine() : aPair->PLine(), aNewCoupled );
|
|
|
|
if( refLine.Collide( &coupledLine, aNode ) )
|
|
return false;
|
|
|
|
if( aNode->CheckColliding ( &refLine ) )
|
|
return false;
|
|
|
|
if( aNode->CheckColliding ( &coupledLine ) )
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
bool coupledBypass( NODE* aNode, DIFF_PAIR* aPair, bool aRefIsP, const SHAPE_LINE_CHAIN& aRef,
|
|
const SHAPE_LINE_CHAIN& aRefBypass, const SHAPE_LINE_CHAIN& aCoupled,
|
|
SHAPE_LINE_CHAIN& aNewCoupled )
|
|
{
|
|
int vStartIdx[1024]; // fixme: possible overflow
|
|
int nStarts = findCoupledVertices( aRefBypass.CPoint( 0 ),
|
|
aRefBypass.CSegment( 0 ),
|
|
aCoupled, aPair, vStartIdx );
|
|
DIRECTION_45 dir( aRefBypass.CSegment( 0 ) );
|
|
|
|
int64_t bestLength = -1;
|
|
bool found = false;
|
|
SHAPE_LINE_CHAIN bestBypass;
|
|
int si, ei;
|
|
|
|
for( int i=0; i< nStarts; i++ )
|
|
{
|
|
for( int j = 1; j < aCoupled.PointCount() - 1; j++ )
|
|
{
|
|
int delta = std::abs ( vStartIdx[i] - j );
|
|
|
|
if( delta > 1 )
|
|
{
|
|
const VECTOR2I& vs = aCoupled.CPoint( vStartIdx[i] );
|
|
SHAPE_LINE_CHAIN bypass = dir.BuildInitialTrace( vs, aCoupled.CPoint(j),
|
|
dir.IsDiagonal() );
|
|
|
|
int64_t coupledLength = aPair->CoupledLength( aRef, bypass );
|
|
|
|
SHAPE_LINE_CHAIN newCoupled = aCoupled;
|
|
|
|
si = vStartIdx[i];
|
|
ei = j;
|
|
|
|
if(si < ei)
|
|
newCoupled.Replace( si, ei, bypass );
|
|
else
|
|
newCoupled.Replace( ei, si, bypass.Reverse() );
|
|
|
|
if( coupledLength > bestLength && verifyDpBypass( aNode, aPair, aRefIsP, aRef,
|
|
newCoupled) )
|
|
{
|
|
bestBypass = newCoupled;
|
|
bestLength = coupledLength;
|
|
found = true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if( found )
|
|
aNewCoupled = bestBypass;
|
|
|
|
return found;
|
|
}
|
|
|
|
|
|
bool checkDpColliding( NODE* aNode, DIFF_PAIR* aPair, bool aIsP, const SHAPE_LINE_CHAIN& aPath )
|
|
{
|
|
LINE tmp ( aIsP ? aPair->PLine() : aPair->NLine(), aPath );
|
|
|
|
return static_cast<bool>( aNode->CheckColliding( &tmp ) );
|
|
}
|
|
|
|
|
|
bool OPTIMIZER::mergeDpStep( DIFF_PAIR* aPair, bool aTryP, int step )
|
|
{
|
|
int n = 1;
|
|
|
|
SHAPE_LINE_CHAIN currentPath = aTryP ? aPair->CP() : aPair->CN();
|
|
SHAPE_LINE_CHAIN coupledPath = aTryP ? aPair->CN() : aPair->CP();
|
|
|
|
int n_segs = currentPath.SegmentCount() - 1;
|
|
|
|
int64_t clenPre = aPair->CoupledLength( currentPath, coupledPath );
|
|
int64_t budget = clenPre / 10; // fixme: come up with something more intelligent here...
|
|
|
|
while( n < n_segs - step )
|
|
{
|
|
const SEG s1 = currentPath.CSegment( n );
|
|
const SEG s2 = currentPath.CSegment( n + step );
|
|
|
|
DIRECTION_45 dir1( s1 );
|
|
DIRECTION_45 dir2( s2 );
|
|
|
|
if( dir1.IsObtuse( dir2 ) )
|
|
{
|
|
SHAPE_LINE_CHAIN bypass = DIRECTION_45().BuildInitialTrace( s1.A, s2.B,
|
|
dir1.IsDiagonal() );
|
|
SHAPE_LINE_CHAIN newRef;
|
|
SHAPE_LINE_CHAIN newCoup;
|
|
int64_t deltaCoupled = -1, deltaUni = -1;
|
|
|
|
newRef = currentPath;
|
|
newRef.Replace( s1.Index(), s2.Index(), bypass );
|
|
|
|
deltaUni = aPair->CoupledLength ( newRef, coupledPath ) - clenPre + budget;
|
|
|
|
if( coupledBypass( m_world, aPair, aTryP, newRef, bypass, coupledPath, newCoup ) )
|
|
{
|
|
deltaCoupled = aPair->CoupledLength( newRef, newCoup ) - clenPre + budget;
|
|
|
|
if( deltaCoupled >= 0 )
|
|
{
|
|
newRef.Simplify();
|
|
newCoup.Simplify();
|
|
|
|
aPair->SetShape( newRef, newCoup, !aTryP );
|
|
return true;
|
|
}
|
|
}
|
|
else if( deltaUni >= 0 && verifyDpBypass( m_world, aPair, aTryP, newRef, coupledPath ) )
|
|
{
|
|
newRef.Simplify();
|
|
coupledPath.Simplify();
|
|
|
|
aPair->SetShape( newRef, coupledPath, !aTryP );
|
|
return true;
|
|
}
|
|
}
|
|
|
|
n++;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
|
|
bool OPTIMIZER::mergeDpSegments( DIFF_PAIR* aPair )
|
|
{
|
|
int step_p = aPair->CP().SegmentCount() - 2;
|
|
int step_n = aPair->CN().SegmentCount() - 2;
|
|
|
|
while( 1 )
|
|
{
|
|
int n_segs_p = aPair->CP().SegmentCount();
|
|
int n_segs_n = aPair->CN().SegmentCount();
|
|
|
|
int max_step_p = n_segs_p - 2;
|
|
int max_step_n = n_segs_n - 2;
|
|
|
|
if( step_p > max_step_p )
|
|
step_p = max_step_p;
|
|
|
|
if( step_n > max_step_n )
|
|
step_n = max_step_n;
|
|
|
|
if( step_p < 1 && step_n < 1 )
|
|
break;
|
|
|
|
bool found_anything_p = false;
|
|
bool found_anything_n = false;
|
|
|
|
if( step_p > 1 )
|
|
found_anything_p = mergeDpStep( aPair, true, step_p );
|
|
|
|
if( step_n > 1 )
|
|
found_anything_n = mergeDpStep( aPair, false, step_n );
|
|
|
|
if( !found_anything_n && !found_anything_p )
|
|
{
|
|
step_n--;
|
|
step_p--;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
|
|
bool OPTIMIZER::Optimize( DIFF_PAIR* aPair )
|
|
{
|
|
return mergeDpSegments( aPair );
|
|
}
|
|
|
|
|
|
static int64_t shovedArea( const SHAPE_LINE_CHAIN& aOld, const SHAPE_LINE_CHAIN& aNew )
|
|
{
|
|
int64_t area = 0;
|
|
const int oc = aOld.PointCount();
|
|
const int nc = aNew.PointCount();
|
|
const int total = oc + nc;
|
|
|
|
for(int i = 0; i < total; i++)
|
|
{
|
|
int i_next = (i + 1 == total ? 0 : i + 1);
|
|
|
|
const VECTOR2I &v0 = i < oc ? aOld.CPoint(i)
|
|
: aNew.CPoint( nc - 1 - (i - oc) );
|
|
const VECTOR2I &v1 = i_next < oc ? aOld.CPoint ( i_next )
|
|
: aNew.CPoint( nc - 1 - (i_next - oc) );
|
|
area += -(int64_t) v0.y * v1.x + (int64_t) v0.x * v1.y;
|
|
}
|
|
|
|
return std::abs( area / 2 );
|
|
}
|
|
|
|
|
|
bool tightenSegment( bool dir, NODE *aNode, const LINE& cur, const SHAPE_LINE_CHAIN& in,
|
|
SHAPE_LINE_CHAIN& out )
|
|
{
|
|
SEG a = in.CSegment(0);
|
|
SEG center = in.CSegment(1);
|
|
SEG b = in.CSegment(2);
|
|
|
|
DIRECTION_45 dirA ( a );
|
|
DIRECTION_45 dirCenter ( center );
|
|
DIRECTION_45 dirB ( b );
|
|
|
|
if (!dirA.IsObtuse( dirCenter) || !dirCenter.IsObtuse(dirB))
|
|
return false;
|
|
|
|
//VECTOR2I perp = (center.B - center.A).Perpendicular();
|
|
VECTOR2I guideA, guideB ;
|
|
|
|
SEG guide;
|
|
int initial;
|
|
|
|
//auto dbg = ROUTER::GetInstance()->GetInterface()->GetDebugDecorator();
|
|
if ( dirA.Angle ( dirB ) != DIRECTION_45::ANG_RIGHT )
|
|
return false;
|
|
|
|
{
|
|
/*
|
|
auto rC = *a.IntersectLines( b );
|
|
dbg->AddSegment ( SEG( center.A, rC ), 1 );
|
|
dbg->AddSegment ( SEG( center.B, rC ), 2 );
|
|
auto perp = dirCenter.Left().Left();
|
|
|
|
SEG sperp ( center.A, center.A + perp.ToVector() );
|
|
|
|
auto vpc = sperp.LineProject( rC );
|
|
auto vpa = sperp.LineProject( a.A );
|
|
auto vpb = sperp.LineProject( b.B );
|
|
|
|
auto da = (vpc - vpa).EuclideanNorm();
|
|
auto db = (vpc - vpb).EuclideanNorm();
|
|
|
|
auto vp = (da < db) ? vpa : vpb;
|
|
dbg->AddSegment ( SEG( vpc, vp ), 5 );
|
|
|
|
|
|
guide = SEG ( vpc, vp );
|
|
*/
|
|
}
|
|
|
|
int da = a.Length();
|
|
int db = b.Length();
|
|
|
|
if( da < db )
|
|
guide = a;
|
|
else
|
|
guide = b;
|
|
|
|
initial = guide.Length();
|
|
|
|
int step = initial;
|
|
int current = step;
|
|
SHAPE_LINE_CHAIN snew;
|
|
|
|
while( step > 1 )
|
|
{
|
|
LINE l( cur );
|
|
|
|
snew.Clear();
|
|
snew.Append( a.A );
|
|
snew.Append( a.B + ( a.A - a.B ).Resize( current ) );
|
|
snew.Append( b.A + ( b.B - b.A ).Resize( current ) );
|
|
snew.Append( b.B );
|
|
|
|
step /= 2;
|
|
|
|
l.SetShape(snew);
|
|
|
|
if( aNode->CheckColliding(&l) )
|
|
current -= step;
|
|
else if ( current + step >= initial )
|
|
current = initial;
|
|
else
|
|
current += step;
|
|
|
|
//dbg->AddSegment ( SEG( center.A , a.LineProject( center.A + gr ) ), 3 );
|
|
//dbg->AddSegment ( SEG( center.A , center.A + guideA ), 3 );
|
|
//dbg->AddSegment ( SEG( center.B , center.B + guideB ), 4 );
|
|
|
|
if ( current == initial )
|
|
break;
|
|
|
|
|
|
}
|
|
|
|
out = snew;
|
|
|
|
//dbg->AddLine ( snew, 3, 100000 );
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
void Tighten( NODE *aNode, const SHAPE_LINE_CHAIN& aOldLine, const LINE& aNewLine,
|
|
LINE& aOptimized )
|
|
{
|
|
LINE tmp;
|
|
|
|
if( aNewLine.SegmentCount() < 3 )
|
|
return;
|
|
|
|
SHAPE_LINE_CHAIN current ( aNewLine.CLine() );
|
|
|
|
for( int step = 0; step < 3; step++ )
|
|
{
|
|
current.Simplify();
|
|
|
|
for( int i = 0; i <= current.SegmentCount() - 3; i++ )
|
|
{
|
|
SHAPE_LINE_CHAIN l_in, l_out;
|
|
|
|
l_in = current.Slice( i, i + 3 );
|
|
|
|
for( int dir = 0; dir <= 1; dir++ )
|
|
{
|
|
if( tightenSegment( dir ? true : false, aNode, aNewLine, l_in, l_out ) )
|
|
{
|
|
SHAPE_LINE_CHAIN opt = current;
|
|
opt.Replace( i, i + 3, l_out );
|
|
auto optArea = std::abs( shovedArea( aOldLine, opt ) );
|
|
auto prevArea = std::abs( shovedArea( aOldLine, current ) );
|
|
|
|
if( optArea < prevArea )
|
|
current = opt;
|
|
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
aOptimized = LINE( aNewLine, current );
|
|
|
|
//auto dbg = ROUTER::GetInstance()->GetInterface()->GetDebugDecorator();
|
|
//dbg->AddLine ( current, 4, 100000 );
|
|
}
|
|
|
|
}
|