drc_cache_generator.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 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 <common.h>
#include <board_design_settings.h>
#include <footprint.h>
#include <thread_pool.h>
#include <zone.h>
#include <connectivity/connectivity_data.h>
#include <drc/drc_engine.h>
#include <drc/drc_rtree.h>
#include <drc/drc_cache_generator.h>
 
bool DRC_CACHE_GENERATOR::Run()
{
 m_board = m_drcEngine->GetBoard();
 
 int& m_largestClearance = m_board->m_DRCMaxClearance;
 int& m_largestPhysicalClearance = m_board->m_DRCMaxPhysicalClearance;
 DRC_CONSTRAINT worstConstraint;
 LSET boardCopperLayers = LSET::AllCuMask( m_board->GetCopperLayerCount() );
 
 if( m_drcEngine->QueryWorstConstraint( CLEARANCE_CONSTRAINT, worstConstraint ) )
 m_largestClearance = worstConstraint.GetValue().Min();
 
 if( m_drcEngine->QueryWorstConstraint( HOLE_CLEARANCE_CONSTRAINT, worstConstraint ) )
 m_largestClearance = std::max( m_largestClearance, worstConstraint.GetValue().Min() );
 
 if( m_drcEngine->QueryWorstConstraint( PHYSICAL_CLEARANCE_CONSTRAINT, worstConstraint ) )
 m_largestPhysicalClearance = worstConstraint.GetValue().Min();
 
 if( m_drcEngine->QueryWorstConstraint( PHYSICAL_HOLE_CLEARANCE_CONSTRAINT, worstConstraint ) )
 m_largestPhysicalClearance = std::max( m_largestPhysicalClearance, worstConstraint.GetValue().Min() );
 
 std::set<ZONE*> allZones;
 
 for( ZONE* zone : m_board->Zones() )
 {
 allZones.insert( zone );
 
 if( !zone->GetIsRuleArea() )
 {
 m_board->m_DRCZones.push_back( zone );
 
 if( ( zone->GetLayerSet() & boardCopperLayers ).any() )
 {
 m_board->m_DRCCopperZones.push_back( zone );
 m_largestClearance = std::max( m_largestClearance, zone->GetLocalClearance() );
 }
 }
 }
 
 for( FOOTPRINT* footprint : m_board->Footprints() )
 {
 for( PAD* pad : footprint->Pads() )
 m_largestClearance = std::max( m_largestClearance, pad->GetLocalClearance() );
 
 for( ZONE* zone : footprint->Zones() )
 {
 allZones.insert( zone );
 
 if( !zone->GetIsRuleArea() )
 {
 m_board->m_DRCZones.push_back( zone );
 
 if( ( zone->GetLayerSet() & boardCopperLayers ).any() )
 {
 m_board->m_DRCCopperZones.push_back( zone );
 m_largestClearance = std::max( m_largestClearance, zone->GetLocalClearance() );
 }
 }
 }
 }
 
 // This is the number of tests between 2 calls to the progress bar
 size_t progressDelta = 200;
 size_t count = 0;
 size_t ii = 0;
 
 auto countItems =
 [&]( BOARD_ITEM* item ) -> bool
 {
 ++count;
 return true;
 };
 
 auto addToCopperTree =
 [&]( BOARD_ITEM* item ) -> bool
 {
 if( !reportProgress( ii++, count, progressDelta ) )
 return false;
 
 LSET copperLayers = item->GetLayerSet() & boardCopperLayers;
 
 // Special-case pad holes which pierce all the copper layers
 if( item->Type() == PCB_PAD_T )
 {
 PAD* pad = static_cast<PAD*>( item );
 
 if( pad->HasHole() )
 copperLayers = boardCopperLayers;
 }
 
 for( PCB_LAYER_ID layer : copperLayers.Seq() )
 {
 if( IsCopperLayer( layer ) )
 m_board->m_CopperItemRTreeCache->Insert( item, layer, m_largestClearance );
 }
 
 return true;
 };
 
 if( !reportPhase( _( "Gathering copper items..." ) ) )
 return false; // DRC cancelled
 
 static const std::vector<KICAD_T> itemTypes = {
 PCB_TRACE_T, PCB_ARC_T, PCB_VIA_T,
 PCB_PAD_T,
 PCB_SHAPE_T,
 PCB_TEXT_T, PCB_TEXTBOX_T,
 PCB_DIMENSION_T
 };
 
 forEachGeometryItem( itemTypes, LSET::AllCuMask(), countItems );
 
 {
 std::unique_lock<std::mutex> cacheLock( m_board->m_CachesMutex );
 
 if( !m_board->m_CopperItemRTreeCache )
 m_board->m_CopperItemRTreeCache = std::make_shared<DRC_RTREE>();
 
 forEachGeometryItem( itemTypes, LSET::AllCuMask(), addToCopperTree );
 }
 
 if( !reportPhase( _( "Tessellating copper zones..." ) ) )
 return false; // DRC cancelled
 
 // Cache zone bounding boxes, triangulation, copper zone rtrees, and footprint courtyards
 // before we start.
 
 for( FOOTPRINT* footprint : m_board->Footprints() )
 footprint->BuildCourtyardCaches();
 
 thread_pool& tp = GetKiCadThreadPool();
 std::vector<std::future<size_t>> returns;
 std::atomic<size_t> done( 1 );
 
 returns.reserve( allZones.size() );
 
 auto cache_zones =
 [this, &done]( ZONE* aZone ) -> size_t
 {
 if( m_drcEngine->IsCancelled() )
 return 0;
 
 aZone->CacheBoundingBox();
 aZone->CacheTriangulation();
 
 if( !aZone->GetIsRuleArea() && aZone->IsOnCopperLayer() )
 {
 std::unique_ptr<DRC_RTREE> rtree = std::make_unique<DRC_RTREE>();
 
 for( PCB_LAYER_ID layer : aZone->GetLayerSet().Seq() )
 {
 if( IsCopperLayer( layer ) )
 rtree->Insert( aZone, layer );
 }
 
 std::unique_lock<std::mutex> cacheLock( m_board->m_CachesMutex );
 m_board->m_CopperZoneRTreeCache[ aZone ] = std::move( rtree );
 
 done.fetch_add( 1 );
 }
 
 return 1;
 };
 
 for( ZONE* zone : allZones )
 returns.emplace_back( tp.submit( cache_zones, zone ) );
 
 for( const std::future<size_t>& 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 ) / allZones.size() );
 status = ret.wait_for( std::chrono::milliseconds( 250 ) );
 }
 }
 
 m_board->m_ZoneIsolatedIslandsMap.clear();
 
 for( ZONE* zone : m_board->Zones() )
 {
 if( !zone->GetIsRuleArea() && !zone->IsTeardropArea() )
 {
 for( PCB_LAYER_ID layer : zone->GetLayerSet().Seq() )
 m_board->m_ZoneIsolatedIslandsMap[ zone ][ layer ] = ISOLATED_ISLANDS();
 }
 }
 
 std::shared_ptr<CONNECTIVITY_DATA> connectivity = m_board->GetConnectivity();
 
 connectivity->ClearRatsnest();
 connectivity->Build( m_board, m_drcEngine->GetProgressReporter() );
 connectivity->FillIsolatedIslandsMap( m_board->m_ZoneIsolatedIslandsMap, true );
 
 return !m_drcEngine->IsCancelled();
}