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kicad/pcbnew/connectivity_algo.cpp

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/*
* This program source code file is part of KICAD, a free EDA CAD application.
*
* Copyright (C) 2016-2018 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 2
* 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, you may find one here:
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
* or you may search the http://www.gnu.org website for the version 2 license,
* or you may write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <connectivity_algo.h>
#include <widgets/progress_reporter.h>
#include <geometry/geometry_utils.h>
#include <thread>
#include <mutex>
#include <future>
#include <algorithm>
#ifdef PROFILE
#include <profile.h>
#endif
using namespace std::placeholders;
bool operator<( const CN_ANCHOR_PTR& a, const CN_ANCHOR_PTR& b )
{
if( a->Pos().x == b->Pos().x )
return a->Pos().y < b->Pos().y;
else
return a->Pos().x < b->Pos().x;
}
bool CN_ANCHOR::IsDirty() const
{
return m_item->Dirty();
}
CN_CLUSTER::CN_CLUSTER()
{
m_items.reserve( 64 );
m_originPad = nullptr;
m_originNet = -1;
m_conflicting = false;
}
CN_CLUSTER::~CN_CLUSTER()
{
}
wxString CN_CLUSTER::OriginNetName() const
{
if( !m_originPad || !m_originPad->Valid() )
return "<none>";
else
return m_originPad->Parent()->GetNetname();
}
bool CN_CLUSTER::Contains( const CN_ITEM* aItem )
{
return std::find( m_items.begin(), m_items.end(), aItem ) != m_items.end();
}
bool CN_CLUSTER::Contains( const BOARD_CONNECTED_ITEM* aItem )
{
for( auto item : m_items )
{
if( item->Valid() && item->Parent() == aItem )
return true;
}
return false;
}
void CN_ITEM::Dump()
{
printf(" valid: %d, connected: \n", !!Valid());
for( auto i : m_connected )
{
TRACK* t = static_cast<TRACK*>( i->Parent() );
printf( " - %p %d\n", t, t->Type() );
}
}
void CN_CLUSTER::Dump()
{
for( auto item : m_items )
{
wxLogTrace( "CN", " - item : %p bitem : %p type : %d inet %s\n", item, item->Parent(),
item->Parent()->Type(), (const char*) item->Parent()->GetNetname().c_str() );
printf( "- item : %p bitem : %p type : %d inet %s\n", item, item->Parent(),
item->Parent()->Type(), (const char*) item->Parent()->GetNetname().c_str() );
item->Dump();
}
}
void CN_CLUSTER::Add( CN_ITEM* item )
{
m_items.push_back( item );
if( m_originNet < 0 )
{
m_originNet = item->Net();
}
if( item->Parent()->Type() == PCB_PAD_T )
{
if( !m_originPad )
{
m_originPad = item;
m_originNet = item->Net();
}
if( m_originPad && item->Net() != m_originNet )
{
m_conflicting = true;
}
}
}
CN_CONNECTIVITY_ALGO::CN_CONNECTIVITY_ALGO()
{
}
CN_CONNECTIVITY_ALGO::~CN_CONNECTIVITY_ALGO()
{
Clear();
}
bool CN_CONNECTIVITY_ALGO::Remove( BOARD_ITEM* aItem )
{
markItemNetAsDirty( aItem );
switch( aItem->Type() )
{
case PCB_MODULE_T:
for( auto pad : static_cast<MODULE*>( aItem ) -> Pads() )
{
m_itemMap[ static_cast<BOARD_CONNECTED_ITEM*>( pad ) ].MarkItemsAsInvalid();
m_itemMap.erase( static_cast<BOARD_CONNECTED_ITEM*>( pad ) );
}
m_itemList.SetDirty( true );
break;
case PCB_PAD_T:
m_itemMap[ static_cast<BOARD_CONNECTED_ITEM*>( aItem ) ].MarkItemsAsInvalid();
m_itemMap.erase( static_cast<BOARD_CONNECTED_ITEM*>( aItem ) );
m_itemList.SetDirty( true );
break;
case PCB_TRACE_T:
m_itemMap[ static_cast<BOARD_CONNECTED_ITEM*>( aItem ) ].MarkItemsAsInvalid();
m_itemMap.erase( static_cast<BOARD_CONNECTED_ITEM*>( aItem ) );
m_itemList.SetDirty( true );
break;
case PCB_VIA_T:
m_itemMap[ static_cast<BOARD_CONNECTED_ITEM*>( aItem ) ].MarkItemsAsInvalid();
m_itemMap.erase( static_cast<BOARD_CONNECTED_ITEM*>( aItem ) );
m_itemList.SetDirty( true );
break;
case PCB_ZONE_AREA_T:
{
m_itemMap[ static_cast<BOARD_CONNECTED_ITEM*>( aItem ) ].MarkItemsAsInvalid();
m_itemMap.erase ( static_cast<BOARD_CONNECTED_ITEM*>( aItem ) );
m_itemList.SetDirty( true );
break;
}
case PCB_SEGZONE_T:
default:
return false;
}
// Once we delete an item, it may connect between lists, so mark both as potentially invalid
m_itemList.SetHasInvalid( true );
return true;
}
void CN_CONNECTIVITY_ALGO::markItemNetAsDirty( const BOARD_ITEM* aItem )
{
if( aItem->IsConnected() )
{
auto citem = static_cast<const BOARD_CONNECTED_ITEM*>( aItem );
MarkNetAsDirty( citem->GetNetCode() );
}
else
{
if( aItem->Type() == PCB_MODULE_T )
{
auto mod = static_cast <const MODULE*>( aItem );
for( D_PAD* pad = mod->PadsList(); pad; pad = pad->Next() )
MarkNetAsDirty( pad->GetNetCode() );
}
}
}
bool CN_CONNECTIVITY_ALGO::Add( BOARD_ITEM* aItem )
{
if( !IsCopperLayer( aItem->GetLayer() ) )
return false;
markItemNetAsDirty ( aItem );
switch( aItem->Type() )
{
case PCB_NETINFO_T:
{
MarkNetAsDirty( static_cast<NETINFO_ITEM*>( aItem )->GetNet() );
break;
}
case PCB_MODULE_T:
for( auto pad : static_cast<MODULE*>( aItem ) -> Pads() )
{
if( m_itemMap.find( pad ) != m_itemMap.end() )
return false;
add( m_itemList, pad );
}
break;
case PCB_PAD_T:
if( m_itemMap.find ( static_cast<D_PAD*>( aItem ) ) != m_itemMap.end() )
return false;
add( m_itemList, static_cast<D_PAD*>( aItem ) );
break;
case PCB_TRACE_T:
{
if( m_itemMap.find( static_cast<TRACK*>( aItem ) ) != m_itemMap.end() )
return false;
add( m_itemList, static_cast<TRACK*>( aItem ) );
break;
}
case PCB_VIA_T:
if( m_itemMap.find( static_cast<VIA*>( aItem ) ) != m_itemMap.end() )
return false;
add( m_itemList, static_cast<VIA*>( aItem ) );
break;
case PCB_ZONE_AREA_T:
{
auto zone = static_cast<ZONE_CONTAINER*>( aItem );
if( m_itemMap.find( static_cast<ZONE_CONTAINER*>( aItem ) ) != m_itemMap.end() )
return false;
m_itemMap[zone] = ITEM_MAP_ENTRY();
for( auto zitem : m_itemList.Add( zone ) )
m_itemMap[zone].Link(zitem);
break;
}
//N.B. SEGZONE items are deprecated and not to used for connectivity
case PCB_SEGZONE_T:
default:
return false;
}
return true;
}
void CN_CONNECTIVITY_ALGO::searchConnections()
{
#ifdef CONNECTIVITY_DEBUG
printf("Search start\n");
#endif
#ifdef PROFILE
PROF_COUNTER garbage_collection( "garbage-collection" );
#endif
std::vector<CN_ITEM*> garbage;
garbage.reserve( 1024 );
m_itemList.RemoveInvalidItems( garbage );
for( auto item : garbage )
delete item;
#ifdef PROFILE
garbage_collection.Show();
PROF_COUNTER search_basic( "search-basic" );
#endif
std::vector<CN_ITEM*> dirtyItems;
std::copy_if( m_itemList.begin(), m_itemList.end(), std::back_inserter( dirtyItems ),
[] ( CN_ITEM* aItem ) { return aItem->Dirty(); } );
if( m_progressReporter )
{
m_progressReporter->SetMaxProgress( dirtyItems.size() );
m_progressReporter->KeepRefreshing();
}
if( m_itemList.IsDirty() )
{
size_t parallelThreadCount = std::min<size_t>( std::thread::hardware_concurrency(),
( dirtyItems.size() + 7 ) / 8 );
std::atomic<size_t> nextItem( 0 );
std::vector<std::future<size_t>> returns( parallelThreadCount );
auto conn_lambda = [&nextItem, &dirtyItems]
( CN_LIST* aItemList, PROGRESS_REPORTER* aReporter) -> size_t
{
for( size_t i = nextItem++; i < dirtyItems.size(); i = nextItem++ )
{
CN_VISITOR visitor( dirtyItems[i] );
aItemList->FindNearby( dirtyItems[i], visitor );
if( aReporter )
aReporter->AdvanceProgress();
}
return 1;
};
if( parallelThreadCount <= 1 )
conn_lambda( &m_itemList, m_progressReporter );
else
{
for( size_t ii = 0; ii < parallelThreadCount; ++ii )
returns[ii] = std::async( std::launch::async, conn_lambda,
&m_itemList, m_progressReporter );
for( size_t ii = 0; ii < parallelThreadCount; ++ii )
{
// Here we balance returns with a 100ms timeout to allow UI updating
std::future_status status;
do
{
if( m_progressReporter )
m_progressReporter->KeepRefreshing();
status = returns[ii].wait_for( std::chrono::milliseconds( 100 ) );
} while( status != std::future_status::ready );
}
}
if( m_progressReporter )
m_progressReporter->KeepRefreshing();
}
#ifdef PROFILE
search_basic.Show();
#endif
m_itemList.ClearDirtyFlags();
#ifdef CONNECTIVITY_DEBUG
printf("Search end\n");
#endif
}
void CN_ITEM::RemoveInvalidRefs()
{
for( auto it = m_connected.begin(); it != m_connected.end(); )
{
if( !(*it)->Valid() )
it = m_connected.erase( it );
else
++it;
}
}
void CN_LIST::RemoveInvalidItems( std::vector<CN_ITEM*>& aGarbage )
{
if( !m_hasInvalid )
return;
auto lastItem = std::remove_if(m_items.begin(), m_items.end(), [&aGarbage] ( CN_ITEM* item )
{
if( !item->Valid() )
{
aGarbage.push_back ( item );
return true;
}
return false;
} );
m_items.resize( lastItem - m_items.begin() );
// fixme: mem leaks
for( auto item : m_items )
item->RemoveInvalidRefs();
for( auto item : aGarbage )
m_index.Remove( item );
m_hasInvalid = false;
}
bool CN_CONNECTIVITY_ALGO::isDirty() const
{
return m_itemList.IsDirty();
}
const CN_CONNECTIVITY_ALGO::CLUSTERS CN_CONNECTIVITY_ALGO::SearchClusters( CLUSTER_SEARCH_MODE aMode )
{
constexpr KICAD_T types[] = { PCB_TRACE_T, PCB_PAD_T, PCB_VIA_T, PCB_ZONE_AREA_T, PCB_MODULE_T, EOT };
constexpr KICAD_T no_zones[] = { PCB_TRACE_T, PCB_PAD_T, PCB_VIA_T, PCB_MODULE_T, EOT };
if( aMode == CSM_PROPAGATE )
return SearchClusters( aMode, no_zones, -1 );
else
return SearchClusters( aMode, types, -1 );
}
const CN_CONNECTIVITY_ALGO::CLUSTERS CN_CONNECTIVITY_ALGO::SearchClusters( CLUSTER_SEARCH_MODE aMode,
const KICAD_T aTypes[], int aSingleNet )
{
bool withinAnyNet = ( aMode != CSM_PROPAGATE );
std::deque<CN_ITEM*> Q;
CN_ITEM* head = nullptr;
CLUSTERS clusters;
if( isDirty() )
searchConnections();
auto addToSearchList = [&head, withinAnyNet, aSingleNet, aTypes] ( CN_ITEM *aItem )
{
if( withinAnyNet && aItem->Net() <= 0 )
return;
if( !aItem->Valid() )
return;
if( aSingleNet >=0 && aItem->Net() != aSingleNet )
return;
bool found = false;
for( int i = 0; aTypes[i] != EOT; i++ )
{
if( aItem->Parent()->Type() == aTypes[i] )
{
found = true;
break;
}
}
if( !found )
return;
aItem->ListClear();
aItem->SetVisited( false );
if( !head )
head = aItem;
else
head->ListInsert( aItem );
};
std::for_each( m_itemList.begin(), m_itemList.end(), addToSearchList );
while( head )
{
CN_CLUSTER_PTR cluster ( new CN_CLUSTER() );
Q.clear();
CN_ITEM* root = head;
root->SetVisited ( true );
head = root->ListRemove();
Q.push_back( root );
while( Q.size() )
{
CN_ITEM* current = Q.front();
Q.pop_front();
cluster->Add( current );
for( auto n : current->ConnectedItems() )
{
if( withinAnyNet && n->Net() != root->Net() )
continue;
if( !n->Visited() && n->Valid() )
{
n->SetVisited( true );
Q.push_back( n );
head = n->ListRemove();
}
}
}
clusters.push_back( cluster );
}
std::sort( clusters.begin(), clusters.end(), []( CN_CLUSTER_PTR a, CN_CLUSTER_PTR b ) {
return a->OriginNet() < b->OriginNet();
} );
#ifdef CONNECTIVITY_DEBUG
printf("Active clusters: %d\n", clusters.size() );
for( auto cl : clusters )
{
printf( "Net %d\n", cl->OriginNet() );
cl->Dump();
}
#endif
return clusters;
}
void CN_CONNECTIVITY_ALGO::Build( BOARD* aBoard )
{
for( int i = 0; i<aBoard->GetAreaCount(); i++ )
{
auto zone = aBoard->GetArea( i );
Add( zone );
}
for( auto tv : aBoard->Tracks() )
Add( tv );
for( auto mod : aBoard->Modules() )
{
for( auto pad : mod->Pads() )
Add( pad );
}
/*wxLogTrace( "CN", "zones : %lu, pads : %lu vias : %lu tracks : %lu\n",
m_zoneList.Size(), m_padList.Size(),
m_viaList.Size(), m_trackList.Size() );*/
}
void CN_CONNECTIVITY_ALGO::Build( const std::vector<BOARD_ITEM*>& aItems )
{
for( auto item : aItems )
{
switch( item->Type() )
{
case PCB_TRACE_T:
case PCB_VIA_T:
case PCB_PAD_T:
Add( item );
break;
case PCB_MODULE_T:
{
for( auto pad : static_cast<MODULE*>( item )->Pads() )
{
Add( pad );
}
break;
}
//N.B. SEGZONE items are deprecated and not to used for connectivity
case PCB_SEGZONE_T:
default:
break;
}
}
}
void CN_CONNECTIVITY_ALGO::propagateConnections()
{
for( const auto& cluster : m_connClusters )
{
if( cluster->IsConflicting() )
{
wxLogTrace( "CN", "Conflicting nets in cluster %p\n", cluster.get() );
}
else if( cluster->IsOrphaned() )
{
wxLogTrace( "CN", "Skipping orphaned cluster %p [net: %s]\n", cluster.get(),
(const char*) cluster->OriginNetName().c_str() );
}
else if( cluster->HasValidNet() )
{
// normal cluster: just propagate from the pads
int n_changed = 0;
for( auto item : *cluster )
{
if( item->CanChangeNet() )
{
if( item->Valid() && item->Parent()->GetNetCode() != cluster->OriginNet() )
{
MarkNetAsDirty( item->Parent()->GetNetCode() );
MarkNetAsDirty( cluster->OriginNet() );
item->Parent()->SetNetCode( cluster->OriginNet() );
n_changed++;
}
}
}
if( n_changed )
wxLogTrace( "CN", "Cluster %p : net : %d %s\n", cluster.get(),
cluster->OriginNet(), (const char*) cluster->OriginNetName().c_str() );
else
wxLogTrace( "CN", "Cluster %p : nothing to propagate\n", cluster.get() );
}
else
{
wxLogTrace( "CN", "Cluster %p : connected to unused net\n", cluster.get() );
}
}
}
void CN_CONNECTIVITY_ALGO::PropagateNets()
{
m_connClusters = SearchClusters( CSM_PROPAGATE );
propagateConnections();
}
void CN_CONNECTIVITY_ALGO::FindIsolatedCopperIslands( ZONE_CONTAINER* aZone, std::vector<int>& aIslands )
{
if( aZone->GetFilledPolysList().IsEmpty() )
return;
aIslands.clear();
Remove( aZone );
Add( aZone );
m_connClusters = SearchClusters( CSM_CONNECTIVITY_CHECK );
for( const auto& cluster : m_connClusters )
{
if( cluster->Contains( aZone ) && cluster->IsOrphaned() )
{
for( auto z : *cluster )
{
if( z->Parent() == aZone )
{
aIslands.push_back( static_cast<CN_ZONE*>(z)->SubpolyIndex() );
}
}
}
}
wxLogTrace( "CN", "Found %u isolated islands\n", (unsigned)aIslands.size() );
}
void CN_CONNECTIVITY_ALGO::FindIsolatedCopperIslands( std::vector<CN_ZONE_ISOLATED_ISLAND_LIST>& aZones )
{
for ( auto& z : aZones )
Remove( z.m_zone );
for ( auto& z : aZones )
{
if( !z.m_zone->GetFilledPolysList().IsEmpty() )
Add( z.m_zone );
}
m_connClusters = SearchClusters( CSM_CONNECTIVITY_CHECK );
for ( auto& zone : aZones )
{
if( zone.m_zone->GetFilledPolysList().IsEmpty() )
continue;
for( const auto& cluster : m_connClusters )
{
if( cluster->Contains( zone.m_zone ) && cluster->IsOrphaned() )
{
for( auto z : *cluster )
{
if( z->Parent() == zone.m_zone )
{
zone.m_islands.push_back( static_cast<CN_ZONE*>(z)->SubpolyIndex() );
}
}
}
}
}
}
const CN_CONNECTIVITY_ALGO::CLUSTERS& CN_CONNECTIVITY_ALGO::GetClusters()
{
m_ratsnestClusters = SearchClusters( CSM_RATSNEST );
return m_ratsnestClusters;
}
void CN_CONNECTIVITY_ALGO::MarkNetAsDirty( int aNet )
{
if( aNet < 0 )
return;
if( (int) m_dirtyNets.size() <= aNet )
{
int lastNet = m_dirtyNets.size() - 1;
if( lastNet < 0 )
lastNet = 0;
m_dirtyNets.resize( aNet + 1 );
for( int i = lastNet; i < aNet + 1; i++ )
m_dirtyNets[i] = true;
}
m_dirtyNets[aNet] = true;
}
void CN_VISITOR::checkZoneItemConnection( CN_ZONE* aZone, CN_ITEM* aItem )
{
auto zoneItem = static_cast<CN_ZONE*> ( aZone );
if( zoneItem->Net() != aItem->Net() && !aItem->CanChangeNet() )
return;
if( zoneItem->ContainsPoint( aItem->GetAnchor( 0 ) ) ||
( aItem->Parent()->Type() == PCB_TRACE_T &&
zoneItem->ContainsPoint( aItem->GetAnchor( 1 ) ) ) )
{
zoneItem->Connect( aItem );
aItem->Connect( zoneItem );
}
}
void CN_VISITOR::checkZoneZoneConnection( CN_ZONE* aZoneA, CN_ZONE* aZoneB )
{
const auto refParent = static_cast<const ZONE_CONTAINER*>( aZoneA->Parent() );
const auto testedParent = static_cast<const ZONE_CONTAINER*>( aZoneB->Parent() );
if( testedParent->Type () != PCB_ZONE_AREA_T )
return;
if( aZoneB == aZoneA || refParent == testedParent )
return;
if( aZoneB->Net() != aZoneA->Net() )
return; // we only test zones belonging to the same net
const auto& outline = refParent->GetFilledPolysList().COutline( aZoneA->SubpolyIndex() );
for( int i = 0; i < outline.PointCount(); i++ )
{
if( aZoneB->ContainsPoint( outline.CPoint( i ) ) )
{
aZoneA->Connect( aZoneB );
aZoneB->Connect( aZoneA );
return;
}
}
const auto& outline2 = testedParent->GetFilledPolysList().COutline( aZoneB->SubpolyIndex() );
for( int i = 0; i < outline2.PointCount(); i++ )
{
if( aZoneA->ContainsPoint( outline2.CPoint( i ) ) )
{
aZoneA->Connect( aZoneB );
aZoneB->Connect( aZoneA );
return;
}
}
}
bool CN_VISITOR::operator()( CN_ITEM* aCandidate )
{
const auto parentA = aCandidate->Parent();
const auto parentB = m_item->Parent();
if( !aCandidate->Valid() || !m_item->Valid() )
return true;
if( parentA == parentB )
return true;
if( !( parentA->GetLayerSet() & parentB->GetLayerSet() ).any() )
return true;
// If both m_item and aCandidate are marked dirty, they will both be searched
// Since we are reciprocal in our connection, we arbitrarily pick one of the connections
// to conduct the expensive search
if( aCandidate->Dirty() && aCandidate < m_item )
return true;
// We should handle zone-zone connection separately
if ( parentA->Type() == PCB_ZONE_AREA_T && parentB->Type() == PCB_ZONE_AREA_T )
{
checkZoneZoneConnection( static_cast<CN_ZONE*>( m_item ),
static_cast<CN_ZONE*>( aCandidate ) );
return true;
}
if( parentA->Type() == PCB_ZONE_AREA_T )
{
checkZoneItemConnection( static_cast<CN_ZONE*>( aCandidate ), m_item );
return true;
}
if( parentB->Type() == PCB_ZONE_AREA_T )
{
checkZoneItemConnection( static_cast<CN_ZONE*>( m_item ), aCandidate );
return true;
}
// Items do not necessarily have reciprocity as we only check for anchors
// therefore, we check HitTest both directions A->B & B->A
// TODO: Check for collision geometry on extended features
wxPoint ptA1( aCandidate->GetAnchor( 0 ).x, aCandidate->GetAnchor( 0 ).y );
wxPoint ptA2( aCandidate->GetAnchor( 1 ).x, aCandidate->GetAnchor( 1 ).y );
wxPoint ptB1( m_item->GetAnchor( 0 ).x, m_item->GetAnchor( 0 ).y );
wxPoint ptB2( m_item->GetAnchor( 1 ).x, m_item->GetAnchor( 1 ).y );
if( parentA->HitTest( ptB1 ) || parentB->HitTest( ptA1 ) ||
( parentA->Type() == PCB_TRACE_T && parentB->HitTest( ptA2 ) ) ||
( parentB->Type() == PCB_TRACE_T && parentA->HitTest( ptB2 ) ) )
{
m_item->Connect( aCandidate );
aCandidate->Connect( m_item );
}
return true;
};
int CN_ITEM::AnchorCount() const
{
if( !m_valid )
return 0;
return m_parent->Type() == PCB_TRACE_T ? 2 : 1;
}
const VECTOR2I CN_ITEM::GetAnchor( int n ) const
{
if( !m_valid )
return VECTOR2I();
switch( m_parent->Type() )
{
case PCB_PAD_T:
return static_cast<const D_PAD*>( m_parent )->ShapePos();
break;
case PCB_TRACE_T:
{
auto tr = static_cast<const TRACK*>( m_parent );
return ( n == 0 ? tr->GetStart() : tr->GetEnd() );
break;
}
case PCB_VIA_T:
return static_cast<const VIA*>( m_parent )->GetStart();
default:
assert( false );
return VECTOR2I();
}
}
int CN_ZONE::AnchorCount() const
{
if( !Valid() )
return 0;
const auto zone = static_cast<const ZONE_CONTAINER*>( Parent() );
const auto& outline = zone->GetFilledPolysList().COutline( m_subpolyIndex );
return outline.PointCount() ? 1 : 0;
}
const VECTOR2I CN_ZONE::GetAnchor( int n ) const
{
if( !Valid() )
return VECTOR2I();
const auto zone = static_cast<const ZONE_CONTAINER*> ( Parent() );
const auto& outline = zone->GetFilledPolysList().COutline( m_subpolyIndex );
return outline.CPoint( 0 );
}
int CN_ITEM::Net() const
{
if( !m_parent || !m_valid )
return -1;
return m_parent->GetNetCode();
}
BOARD_CONNECTED_ITEM* CN_ANCHOR::Parent() const
{
assert( m_item->Valid() );
return m_item->Parent();
}
bool CN_ANCHOR::Valid() const
{
if( !m_item )
return false;
return m_item->Valid();
}
void CN_CONNECTIVITY_ALGO::Clear()
{
m_ratsnestClusters.clear();
m_connClusters.clear();
m_itemMap.clear();
m_itemList.Clear();
}
void CN_CONNECTIVITY_ALGO::ForEachItem( const std::function<void( CN_ITEM& )>& aFunc )
{
for( auto item : m_itemList )
aFunc( *item );
}
void CN_CONNECTIVITY_ALGO::ForEachAnchor( const std::function<void( CN_ANCHOR& )>& aFunc )
{
ForEachItem( [aFunc] ( CN_ITEM& item ) {
for( const auto& anchor : item.Anchors() )
aFunc( *anchor );
}
);
}
bool CN_ANCHOR::IsDangling() const
{
if( !m_cluster )
return true;
// Calculate the item count connected to this anchor.
// m_cluster groups all items connected, but they are not necessary connected
// at this coordinate point (they are only candidates)
BOARD_CONNECTED_ITEM* item_ref = Parent();
LSET layers = item_ref->GetLayerSet() & LSET::AllCuMask();
// the number of items connected to item_ref at ths anchor point
int connected_items_count = 0;
// the minimal number of items connected to item_ref
// at this anchor point to decide the anchor is *not* dangling
int minimal_count = 1;
// a via can be removed if connected to only one other item.
// the minimal_count is therefore 2
if( item_ref->Type() == PCB_VIA_T )
minimal_count = 2;
for( CN_ITEM* item : *m_cluster )
{
if( !item->Valid() )
continue;
BOARD_CONNECTED_ITEM* brd_item = item->Parent();
if( brd_item == item_ref )
continue;
// count only items on the same layer at this coordinate (especially for zones)
if( !( brd_item->GetLayerSet() & layers ).any() )
continue;
if( brd_item->Type() == PCB_ZONE_AREA_T )
{
ZONE_CONTAINER* zone = static_cast<ZONE_CONTAINER*>( brd_item );
if( zone->HitTestInsideZone( wxPoint( Pos() ) ) )
connected_items_count++;
}
else if( brd_item->HitTest( wxPoint( Pos() ) ) )
connected_items_count++;
}
return connected_items_count < minimal_count;
}
void CN_CONNECTIVITY_ALGO::SetProgressReporter( PROGRESS_REPORTER* aReporter )
{
m_progressReporter = aReporter;
}
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