drc_test_provider_hole_to_hole.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2004-2020 KiCad Developers.
 *
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 * modify it under the terms of the GNU General Public License
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 * of the License, or (at your option) any later version.
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#include <common.h>
#include <board_design_settings.h>
#include <footprint.h>
#include <pad.h>
#include <pcb_track.h>
#include <geometry/shape_segment.h>
#include <geometry/shape_circle.h>
#include <drc/drc_engine.h>
#include <drc/drc_item.h>
#include <drc/drc_rule.h>
#include <drc/drc_test_provider_clearance_base.h>
#include "drc_rtree.h"

/*
 Holes clearance test. Checks pad and via holes for their mechanical clearances.
 Generated errors:
 - DRCE_DRILLED_HOLES_TOO_CLOSE
 - DRCE_DRILLED_HOLES_COLOCATED

 TODO: vias-in-smd-pads check
*/

class DRC_TEST_PROVIDER_HOLE_TO_HOLE : public DRC_TEST_PROVIDER_CLEARANCE_BASE
{
public:
 DRC_TEST_PROVIDER_HOLE_TO_HOLE () :
 DRC_TEST_PROVIDER_CLEARANCE_BASE(),
 m_board( nullptr )
 {
 }

 virtual ~DRC_TEST_PROVIDER_HOLE_TO_HOLE()
 {
 }

 virtual bool Run() override;

 virtual const wxString GetName() const override
 {
 return "hole_to_hole_clearance";
 };

 virtual const wxString GetDescription() const override
 {
 return "Tests hole to hole spacing";
 }

 virtual std::set<DRC_CONSTRAINT_T> GetConstraintTypes() const override;

 int GetNumPhases() const override;

private:
 bool testHoleAgainstHole( BOARD_ITEM* aItem, SHAPE_CIRCLE* aHole, BOARD_ITEM* aOther );

 BOARD* m_board;
 DRC_RTREE m_holeTree;
};


static std::shared_ptr<SHAPE_CIRCLE> getDrilledHoleShape( BOARD_ITEM* aItem )
{
 if( aItem->Type() == PCB_VIA_T )
 {
 PCB_VIA* via = static_cast<PCB_VIA*>( aItem );
 return std::make_shared<SHAPE_CIRCLE>( via->GetCenter(), via->GetDrillValue() / 2 );
 }
 else if( aItem->Type() == PCB_PAD_T )
 {
 PAD* pad = static_cast<PAD*>( aItem );
 return std::make_shared<SHAPE_CIRCLE>( pad->GetPosition(), pad->GetDrillSize().x / 2 );
 }

 return std::make_shared<SHAPE_CIRCLE>( VECTOR2I( 0, 0 ), 0 );
}


bool DRC_TEST_PROVIDER_HOLE_TO_HOLE::Run()
{
 if( m_drcEngine->IsErrorLimitExceeded( DRCE_DRILLED_HOLES_TOO_CLOSE )
 && m_drcEngine->IsErrorLimitExceeded( DRCE_DRILLED_HOLES_COLOCATED ) )
 {
 reportAux( "Hole to hole violations ignored. Tests not run." );
 return true; // continue with other tests
 }

 m_board = m_drcEngine->GetBoard();

 DRC_CONSTRAINT worstClearanceConstraint;

 if( m_drcEngine->QueryWorstConstraint( HOLE_TO_HOLE_CONSTRAINT, worstClearanceConstraint ) )
 {
 m_largestClearance = worstClearanceConstraint.GetValue().Min();
 reportAux( "Worst hole to hole : %d nm", m_largestClearance );
 }
 else
 {
 reportAux( "No hole to hole constraints found. Skipping check." );
 return true; // continue with other tests
 }

 if( !reportPhase( _( "Checking hole to hole clearances..." ) ) )
 return false; // DRC cancelled

 // This is the number of tests between 2 calls to the progress bar
 const size_t delta = 50;
 size_t count = 0;
 size_t ii = 0;

 m_holeTree.clear();

 auto countItems =
 [&]( BOARD_ITEM* item ) -> bool
 {
 if( item->Type() == PCB_PAD_T )
 ++count;
 else if( item->Type() == PCB_VIA_T )
 ++count;

 return true;
 };

 auto addToHoleTree =
 [&]( BOARD_ITEM* item ) -> bool
 {
 if( !reportProgress( ii++, count, delta ) )
 return false;

 if( item->Type() == PCB_PAD_T )
 {
 PAD* pad = static_cast<PAD*>( item );

 // We only care about drilled (ie: round) holes
 if( pad->GetDrillSize().x && pad->GetDrillSize().x == pad->GetDrillSize().y )
 m_holeTree.Insert( item, F_Cu, m_largestClearance );
 }
 else if( item->Type() == PCB_VIA_T )
 {
 PCB_VIA* via = static_cast<PCB_VIA*>( item );

 // We only care about mechanically drilled (ie: non-laser) holes
 if( via->GetViaType() == VIATYPE::THROUGH )
 m_holeTree.Insert( item, F_Cu, m_largestClearance );
 }

 return true;
 };

 forEachGeometryItem( { PCB_PAD_T, PCB_VIA_T }, LSET::AllLayersMask(), countItems );

 count *= 2; // One for adding to tree; one for checking

 forEachGeometryItem( { PCB_PAD_T, PCB_VIA_T }, LSET::AllLayersMask(), addToHoleTree );

 std::map< std::pair<BOARD_ITEM*, BOARD_ITEM*>, int> checkedPairs;

 for( PCB_TRACK* track : m_board->Tracks() )
 {
 if( track->Type() != PCB_VIA_T )
 continue;

 PCB_VIA* via = static_cast<PCB_VIA*>( track );

 if( !reportProgress( ii++, count, delta ) )
 return false; // DRC cancelled

 // We only care about mechanically drilled (ie: non-laser) holes
 if( via->GetViaType() == VIATYPE::THROUGH )
 {
 std::shared_ptr<SHAPE_CIRCLE> holeShape = getDrilledHoleShape( via );

 m_holeTree.QueryColliding( via, F_Cu, F_Cu,
 // Filter:
 [&]( BOARD_ITEM* other ) -> bool
 {
 BOARD_ITEM* a = via;
 BOARD_ITEM* b = other;

 // store canonical order so we don't collide in both directions
 // (a:b and b:a)
 if( static_cast<void*>( a ) > static_cast<void*>( b ) )
 std::swap( a, b );

 if( checkedPairs.count( { a, b } ) )
 {
 return false;
 }
 else
 {
  checkedPairs[ { a, b } ] = 1;
 return true;
 }
 },
 // Visitor:
 [&]( BOARD_ITEM* other ) -> bool
 {
 return testHoleAgainstHole( via, holeShape.get(), other );
 },
 m_largestClearance );
 }
 }

 checkedPairs.clear();

 for( FOOTPRINT* footprint : m_board->Footprints() )
 {
 for( PAD* pad : footprint->Pads() )
 {
 if( !reportProgress( ii++, count, delta ) )
 return false; // DRC cancelled

 // We only care about drilled (ie: round) holes
 if( pad->GetDrillSize().x && pad->GetDrillSize().x == pad->GetDrillSize().y )
 {
 std::shared_ptr<SHAPE_CIRCLE> holeShape = getDrilledHoleShape( pad );

 m_holeTree.QueryColliding( pad, F_Cu, F_Cu,
 // Filter:
 [&]( BOARD_ITEM* other ) -> bool
 {
 BOARD_ITEM* a = pad;
 BOARD_ITEM* b = other;

 // store canonical order so we don't collide in both directions
 // (a:b and b:a)
 if( static_cast<void*>( a ) > static_cast<void*>( b ) )
 std::swap( a, b );

 if( checkedPairs.count( { a, b } ) )
 {
 return false;
 }
 else
 {
 checkedPairs[ { a, b } ] = 1;
 return true;
 }
 },
 // Visitor:
 [&]( BOARD_ITEM* other ) -> bool
 {
 return testHoleAgainstHole( pad, holeShape.get(), other );
 },
 m_largestClearance );
 }
 }
 }

 reportRuleStatistics();

 return true;
}


bool DRC_TEST_PROVIDER_HOLE_TO_HOLE::testHoleAgainstHole( BOARD_ITEM* aItem, SHAPE_CIRCLE* aHole,
 BOARD_ITEM* aOther )
{
 bool reportCoLocation = !m_drcEngine->IsErrorLimitExceeded( DRCE_DRILLED_HOLES_COLOCATED );
 bool reportHole2Hole = !m_drcEngine->IsErrorLimitExceeded( DRCE_DRILLED_HOLES_TOO_CLOSE );

 if( !reportCoLocation && !reportHole2Hole )
 return false;

 std::shared_ptr<SHAPE_CIRCLE> otherHole = getDrilledHoleShape( aOther );
 int epsilon = m_board->GetDesignSettings().GetDRCEpsilon();
 SEG::ecoord epsilon_sq = SEG::Square( epsilon );

 // Holes at same location generate a separate violation
 if( ( aHole->GetCenter() - otherHole->GetCenter() ).SquaredEuclideanNorm() < epsilon_sq )
 {
 if( reportCoLocation )
 {
 std::shared_ptr<DRC_ITEM> drce = DRC_ITEM::Create( DRCE_DRILLED_HOLES_COLOCATED );
 drce->SetItems( aItem, aOther );
 reportViolation( drce, (wxPoint) aHole->GetCenter() );
 }
 }
 else if( reportHole2Hole )
 {
 int actual = ( aHole->GetCenter() - otherHole->GetCenter() ).EuclideanNorm();
 actual = std::max( 0, actual - aHole->GetRadius() - otherHole->GetRadius() );

 auto constraint = m_drcEngine->EvalRules( HOLE_TO_HOLE_CONSTRAINT, aItem, aOther,
 UNDEFINED_LAYER /* holes pierce all layers */ );
 int minClearance = constraint.GetValue().Min() - epsilon;

 if( minClearance >= 0 && actual < minClearance )
 {
 std::shared_ptr<DRC_ITEM> drce = DRC_ITEM::Create( DRCE_DRILLED_HOLES_TOO_CLOSE );

 m_msg.Printf( _( "(%s min %s; actual %s)" ),
 constraint.GetName(),
 MessageTextFromValue( userUnits(), minClearance ),
  MessageTextFromValue( userUnits(), actual ) );

 drce->SetErrorMessage( drce->GetErrorText() + wxS( " " ) + m_msg );
 drce->SetItems( aItem, aOther );
 drce->SetViolatingRule( constraint.GetParentRule() );

 reportViolation( drce, (wxPoint) aHole->GetCenter() );
 }
 }

 return true;
}


int DRC_TEST_PROVIDER_HOLE_TO_HOLE::GetNumPhases() const
{
 return 1;
}


std::set<DRC_CONSTRAINT_T> DRC_TEST_PROVIDER_HOLE_TO_HOLE::GetConstraintTypes() const
{
 return { HOLE_TO_HOLE_CONSTRAINT };
}


namespace detail
{
 static DRC_REGISTER_TEST_PROVIDER<DRC_TEST_PROVIDER_HOLE_TO_HOLE> dummy;
}