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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2021-2022 KiCad Developers.
*
* 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 <board.h>
#include <board_design_settings.h>
#include <connectivity/connectivity_data.h>
#include <zone.h>
#include <footprint.h>
#include <pad.h>
#include <pcb_track.h>
#include <core/thread_pool.h>
#include <geometry/shape_line_chain.h>
#include <geometry/shape_poly_set.h>
#include <drc/drc_rule.h>
#include <drc/drc_item.h>
#include <drc/drc_test_provider.h>
/*
This loads some rule resolvers for the ZONE_FILLER, and checks that pad thermal relief
connections have at least the required number of spokes.
Errors generated:
- DRCE_STARVED_THERMAL
*/
class DRC_TEST_PROVIDER_ZONE_CONNECTIONS : public DRC_TEST_PROVIDER
{
public:
DRC_TEST_PROVIDER_ZONE_CONNECTIONS()
{
}
virtual ~DRC_TEST_PROVIDER_ZONE_CONNECTIONS()
{
}
virtual bool Run() override;
virtual const wxString GetName() const override
{
return wxT( "zone connections" );
};
virtual const wxString GetDescription() const override
{
return wxT( "Checks thermal reliefs for a sufficient number of connecting spokes" );
}
private:
void testZoneLayer( ZONE* aZone, PCB_LAYER_ID aLayer );
};
void DRC_TEST_PROVIDER_ZONE_CONNECTIONS::testZoneLayer( ZONE* aZone, PCB_LAYER_ID aLayer )
{
BOARD* board = m_drcEngine->GetBoard();
BOARD_DESIGN_SETTINGS& bds = board->GetDesignSettings();
std::shared_ptr<CONNECTIVITY_DATA> connectivity = board->GetConnectivity();
DRC_CONSTRAINT constraint;
wxString msg;
const std::shared_ptr<SHAPE_POLY_SET>& zoneFill = aZone->GetFilledPolysList( aLayer );
ISOLATED_ISLANDS isolatedIslands;
auto zoneIter = board->m_ZoneIsolatedIslandsMap.find( aZone );
if( zoneIter != board->m_ZoneIsolatedIslandsMap.end() )
{
auto layerIter = zoneIter->second.find( aLayer );
if( layerIter != zoneIter->second.end() )
isolatedIslands = layerIter->second;
}
for( FOOTPRINT* footprint : board->Footprints() )
{
for( PAD* pad : footprint->Pads() )
{
if( m_drcEngine->IsErrorLimitExceeded( DRCE_STARVED_THERMAL ) )
return;
if( m_drcEngine->IsCancelled() )
return;
//
// Quick tests for "connected":
//
if( pad->GetNetCode() != aZone->GetNetCode() || pad->GetNetCode() <= 0 )
continue;
BOX2I item_bbox = pad->GetBoundingBox();
if( !item_bbox.Intersects( aZone->GetBoundingBox() ) )
continue;
if( !pad->FlashLayer( aLayer ) )
continue;
//
// If those passed, do a thorough test:
//
constraint = bds.m_DRCEngine->EvalZoneConnection( pad, aZone, aLayer );
ZONE_CONNECTION conn = constraint.m_ZoneConnection;
if( conn != ZONE_CONNECTION::THERMAL )
continue;
constraint = bds.m_DRCEngine->EvalRules( MIN_RESOLVED_SPOKES_CONSTRAINT, pad, aZone,
aLayer );
int minCount = constraint.m_Value.Min();
if( constraint.GetSeverity() == RPT_SEVERITY_IGNORE || minCount <= 0 )
continue;
constraint = bds.m_DRCEngine->EvalRules( THERMAL_RELIEF_GAP_CONSTRAINT, pad, aZone,
aLayer );
int mid_gap = constraint.m_Value.Min() / 2;
SHAPE_POLY_SET padPoly;
pad->TransformShapeToPolygon( padPoly, aLayer, mid_gap, ARC_LOW_DEF, ERROR_OUTSIDE );
SHAPE_LINE_CHAIN& padOutline = padPoly.Outline( 0 );
BOX2I padBBox( item_bbox );
int spokes = 0;
int ignoredSpokes = 0;
VECTOR2I ignoredSpokePos;
for( int jj = 0; jj < zoneFill->OutlineCount(); ++jj )
{
std::vector<SHAPE_LINE_CHAIN::INTERSECTION> intersections;
zoneFill->Outline( jj ).Intersect( padOutline, intersections, true, &padBBox );
// If we connect to an island that only connects to a single item then we *are*
// that item. Thermal spokes to this (otherwise isolated) island don't provide
// electrical connectivity to anything, so we don't count them.
if( intersections.size() >= 2 )
{
if( alg::contains( isolatedIslands.m_SingleConnectionOutlines, jj ) )
{
ignoredSpokes += (int) intersections.size() / 2;
ignoredSpokePos = ( intersections[0].p + intersections[1].p ) / 2;
}
else
{
spokes += (int) intersections.size() / 2;
}
}
}
if( spokes == 0 && ignoredSpokes == 0 ) // Not connected at all
continue;
if( spokes >= minCount ) // We already have enough
continue;
//
// See if there are any other manual spokes added:
//
for( PCB_TRACK* track : connectivity->GetConnectedTracks( pad ) )
{
if( padOutline.PointInside( track->GetStart() ) )
{
if( aZone->GetFilledPolysList( aLayer )->Collide( track->GetEnd() ) )
spokes++;
}
else if( padOutline.PointInside( track->GetEnd() ) )
{
if( aZone->GetFilledPolysList( aLayer )->Collide( track->GetStart() ) )
spokes++;
}
}
//
// And finally report it if there aren't enough:
//
if( spokes < minCount )
{
std::shared_ptr<DRC_ITEM> drce = DRC_ITEM::Create( DRCE_STARVED_THERMAL );
VECTOR2I pos;
if( ignoredSpokes )
{
msg = wxString::Format( _( "(layer %s; %d spokes connected to isolated island)" ),
board->GetLayerName( aLayer ),
ignoredSpokes );
pos = ignoredSpokePos;
}
else
{
msg = wxString::Format( _( "(layer %s; %s min spoke count %d; actual %d)" ),
board->GetLayerName( aLayer ),
constraint.GetName(),
minCount,
spokes );
pos = pad->GetPosition();
}
drce->SetErrorMessage( drce->GetErrorText() + wxS( " " ) + msg );
drce->SetItems( aZone, pad );
drce->SetViolatingRule( constraint.GetParentRule() );
reportViolation( drce, pos, aLayer );
}
}
}
}
bool DRC_TEST_PROVIDER_ZONE_CONNECTIONS::Run()
{
BOARD* board = m_drcEngine->GetBoard();
std::shared_ptr<CONNECTIVITY_DATA> connectivity = board->GetConnectivity();
DRC_CONSTRAINT constraint;
if( !reportPhase( _( "Checking thermal reliefs..." ) ) )
return false; // DRC cancelled
std::vector< std::pair<ZONE*, PCB_LAYER_ID> > zoneLayers;
std::atomic<size_t> done( 1 );
size_t total_effort = 0;
for( ZONE* zone : board->m_DRCCopperZones )
{
if( !zone->IsTeardropArea() )
{
for( PCB_LAYER_ID layer : zone->GetLayerSet().Seq() )
{
zoneLayers.push_back( { zone, layer } );
total_effort += zone->GetFilledPolysList( layer )->FullPointCount();
}
}
}
total_effort = std::max( (size_t) 1, total_effort );
thread_pool& tp = GetKiCadThreadPool();
std::vector<std::future<int>> returns;
returns.reserve( zoneLayers.size() );
for( const std::pair<ZONE*, PCB_LAYER_ID>& zonelayer : zoneLayers )
{
returns.emplace_back( tp.submit(
[&]( ZONE* aZone, PCB_LAYER_ID aLayer ) -> int
{
if( !m_drcEngine->IsCancelled() )
{
testZoneLayer( aZone, aLayer );
done.fetch_add( aZone->GetFilledPolysList( aLayer )->FullPointCount() );
}
return 0;
},
zonelayer.first, zonelayer.second ) );
}
for( const std::future<int>& ret : returns )
{
std::future_status status = ret.wait_for( std::chrono::milliseconds( 250 ) );
while( status != std::future_status::ready )
{
m_drcEngine->ReportProgress( static_cast<double>( done ) / total_effort );
status = ret.wait_for( std::chrono::milliseconds( 250 ) );
}
}
return !m_drcEngine->IsCancelled();
}
namespace detail
{
static DRC_REGISTER_TEST_PROVIDER<DRC_TEST_PROVIDER_ZONE_CONNECTIONS> dummy;
}
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