drc_test_provider_courtyard_clearance.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2004-2022 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:
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 * 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.,
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 */
 
#include <geometry/shape_poly_set.h>
#include <drc/drc_engine.h>
#include <drc/drc_item.h>
#include <drc/drc_rule.h>
#include <pad.h>
#include <geometry/shape_segment.h>
#include <drc/drc_test_provider_clearance_base.h>
#include <footprint.h>
 
/*
 Couartyard clearance. Tests for malformed component courtyards and overlapping footprints.
 Generated errors:
 - DRCE_OVERLAPPING_FOOTPRINTS
 - DRCE_MISSING_COURTYARD
 - DRCE_MALFORMED_COURTYARD
 - DRCE_PTH_IN_COURTYARD,
 - DRCE_NPTH_IN_COURTYARD,
*/
 
class DRC_TEST_PROVIDER_COURTYARD_CLEARANCE : public DRC_TEST_PROVIDER_CLEARANCE_BASE
{
public:
 DRC_TEST_PROVIDER_COURTYARD_CLEARANCE () :
 DRC_TEST_PROVIDER_CLEARANCE_BASE(),
 m_largestCourtyardClearance( 0 )
 {
 m_isRuleDriven = false;
 }
 
 virtual ~DRC_TEST_PROVIDER_COURTYARD_CLEARANCE ()
 {
 }
 
 virtual bool Run() override;
 
 virtual const wxString GetName() const override
 {
 return wxT( "courtyard_clearance" );
 }
 
 virtual const wxString GetDescription() const override
 {
 return wxT( "Tests footprints' courtyard clearance" );
 }
 
private:
 bool testFootprintCourtyardDefinitions();
 
 bool testCourtyardClearances();
 
private:
 int m_largestCourtyardClearance;
};
 
 
bool DRC_TEST_PROVIDER_COURTYARD_CLEARANCE::testFootprintCourtyardDefinitions()
{
 // Detects missing (or malformed) footprint courtyards
 if( !m_drcEngine->IsErrorLimitExceeded( DRCE_MALFORMED_COURTYARD)
 || !m_drcEngine->IsErrorLimitExceeded( DRCE_MISSING_COURTYARD) )
 {
 if( !reportPhase( _( "Checking footprint courtyard definitions..." ) ) )
 return false; // DRC cancelled
 }
 else if( !m_drcEngine->IsErrorLimitExceeded( DRCE_OVERLAPPING_FOOTPRINTS) )
 {
 if( !reportPhase( _( "Gathering footprint courtyards..." ) ) )
 return false; // DRC cancelled
 }
 else
 {
 reportAux( wxT( "All courtyard violations ignored. Tests not run." ) );
 return true; // continue with other tests
 }
 
 const int progressDelta = 500;
 int ii = 0;
 
 for( FOOTPRINT* footprint : m_board->Footprints() )
 {
 if( !reportProgress( ii++, m_board->Footprints().size(), progressDelta ) )
 return false; // DRC cancelled
 
 if( ( footprint->GetFlags() & MALFORMED_COURTYARDS ) != 0 )
 {
 if( m_drcEngine->IsErrorLimitExceeded( DRCE_MALFORMED_COURTYARD) )
 continue;
 
 OUTLINE_ERROR_HANDLER errorHandler =
 [&]( const wxString& msg, BOARD_ITEM*, BOARD_ITEM*, const VECTOR2I& pt )
 {
 std::shared_ptr<DRC_ITEM> drcItem = DRC_ITEM::Create( DRCE_MALFORMED_COURTYARD );
 drcItem->SetErrorMessage( drcItem->GetErrorText() + wxS( " " ) + msg );
 drcItem->SetItems( footprint );
 reportViolation( drcItem, pt, UNDEFINED_LAYER );
 };
 
 // Re-run courtyard tests to generate DRC_ITEMs
 footprint->BuildCourtyardCaches( &errorHandler );
 }
 else if( footprint->GetCourtyard( F_CrtYd ).OutlineCount() == 0
 && footprint->GetCourtyard( B_CrtYd ).OutlineCount() == 0 )
 {
 if( m_drcEngine->IsErrorLimitExceeded( DRCE_MISSING_COURTYARD ) )
 continue;
 
 if( footprint->GetAttributes() & FP_ALLOW_MISSING_COURTYARD )
 continue;
 
 std::shared_ptr<DRC_ITEM> drcItem = DRC_ITEM::Create( DRCE_MISSING_COURTYARD );
 drcItem->SetItems( footprint );
 reportViolation( drcItem, footprint->GetPosition(), UNDEFINED_LAYER );
 }
 else
 {
 footprint->GetCourtyard( F_CrtYd ).BuildBBoxCaches();
 footprint->GetCourtyard( B_CrtYd ).BuildBBoxCaches();
 }
 }
 
 return !m_drcEngine->IsCancelled();
}
 
 
bool DRC_TEST_PROVIDER_COURTYARD_CLEARANCE::testCourtyardClearances()
{
 if( !reportPhase( _( "Checking footprints for overlapping courtyards..." ) ) )
 return false; // DRC cancelled
 
 const int progressDelta = 100;
 int ii = 0;
 
 for( auto itA = m_board->Footprints().begin(); itA != m_board->Footprints().end(); itA++ )
 {
 if( !reportProgress( ii++, m_board->Footprints().size(), progressDelta ) )
 return false; // DRC cancelled
 
 if( m_drcEngine->IsErrorLimitExceeded( DRCE_OVERLAPPING_FOOTPRINTS)
 && m_drcEngine->IsErrorLimitExceeded( DRCE_PTH_IN_COURTYARD )
 && m_drcEngine->IsErrorLimitExceeded( DRCE_NPTH_IN_COURTYARD ) )
 {
 return true; // continue with other tests
 }
 
 FOOTPRINT* fpA = *itA;
 const SHAPE_POLY_SET& frontA = fpA->GetCourtyard( F_CrtYd );
 const SHAPE_POLY_SET& backA = fpA->GetCourtyard( B_CrtYd );
 
 if( frontA.OutlineCount() == 0 && backA.OutlineCount() == 0
 && m_drcEngine->IsErrorLimitExceeded( DRCE_PTH_IN_COURTYARD )
 && m_drcEngine->IsErrorLimitExceeded( DRCE_NPTH_IN_COURTYARD ) )
 {
 // No courtyards defined and no hole testing against other footprint's courtyards
 continue;
 }
 
 BOX2I frontA_worstCaseBBox = frontA.BBoxFromCaches();
 BOX2I backA_worstCaseBBox = backA.BBoxFromCaches();
 
 frontA_worstCaseBBox.Inflate( m_largestCourtyardClearance );
 backA_worstCaseBBox.Inflate( m_largestCourtyardClearance );
 
 BOX2I fpA_bbox = fpA->GetBoundingBox();
 
 for( auto itB = itA + 1; itB != m_board->Footprints().end(); itB++ )
 {
 FOOTPRINT* fpB = *itB;
 const SHAPE_POLY_SET& frontB = fpB->GetCourtyard( F_CrtYd );
 const SHAPE_POLY_SET& backB = fpB->GetCourtyard( B_CrtYd );
 
 if( frontB.OutlineCount() == 0 && backB.OutlineCount() == 0
 && m_drcEngine->IsErrorLimitExceeded( DRCE_PTH_IN_COURTYARD )
 && m_drcEngine->IsErrorLimitExceeded( DRCE_NPTH_IN_COURTYARD ) )
 {
 // No courtyards defined and no hole testing against other footprint's courtyards
 continue;
 }
 
 BOX2I frontB_worstCaseBBox = frontB.BBoxFromCaches();
 BOX2I backB_worstCaseBBox = backB.BBoxFromCaches();
 
 frontB_worstCaseBBox.Inflate( m_largestCourtyardClearance );
 backB_worstCaseBBox.Inflate( m_largestCourtyardClearance );
 
 BOX2I fpB_bbox = fpB->GetBoundingBox();
 DRC_CONSTRAINT constraint;
 int clearance;
 int actual;
 VECTOR2I pos;
 
 //
 // Check courtyard-to-courtyard collisions on front of board.
 //
 
 if( frontA.OutlineCount() > 0 && frontB.OutlineCount() > 0
 && frontA_worstCaseBBox.Intersects( frontB.BBoxFromCaches() ) )
 {
 constraint = m_drcEngine->EvalRules( COURTYARD_CLEARANCE_CONSTRAINT, fpA, fpB, F_Cu );
 clearance = constraint.GetValue().Min();
 
 if( constraint.GetSeverity() != RPT_SEVERITY_IGNORE && clearance >= 0 )
 {
 if( frontA.Collide( &frontB, clearance, &actual, &pos ) )
 {
 auto drce = DRC_ITEM::Create( DRCE_OVERLAPPING_FOOTPRINTS );
 
 if( clearance > 0 )
 {
 wxString msg = formatMsg( _( "(%s clearance %s; actual %s)" ),
 constraint.GetName(),
 clearance,
 actual );
 
 drce->SetErrorMessage( drce->GetErrorText() + wxS( " " ) + msg );
 }
 
 drce->SetViolatingRule( constraint.GetParentRule() );
 drce->SetItems( fpA, fpB );
 reportViolation( drce, pos, F_CrtYd );
 }
 }
 }
 
 //
 // Check courtyard-to-courtyard collisions on back of board.
 //
 
 if( backA.OutlineCount() > 0 && backB.OutlineCount() > 0
 && backA_worstCaseBBox.Intersects( backB.BBoxFromCaches() ) )
 {
 constraint = m_drcEngine->EvalRules( COURTYARD_CLEARANCE_CONSTRAINT, fpA, fpB, B_Cu );
 clearance = constraint.GetValue().Min();
 
 if( constraint.GetSeverity() != RPT_SEVERITY_IGNORE && clearance >= 0 )
 {
 if( backA.Collide( &backB, clearance, &actual, &pos ) )
 {
 auto drce = DRC_ITEM::Create( DRCE_OVERLAPPING_FOOTPRINTS );
 
 if( clearance > 0 )
 {
 wxString msg = formatMsg( _( "(%s clearance %s; actual %s)" ),
 constraint.GetName(),
 clearance,
 actual );
 
 drce->SetErrorMessage( drce->GetErrorText() + wxS( " " ) + msg );
 }
 
 drce->SetViolatingRule( constraint.GetParentRule() );
 drce->SetItems( fpA, fpB );
 reportViolation( drce, pos, B_CrtYd );
 }
 }
 }
 
 //
 // Check pad-hole-to-courtyard collisions on front and back of board.
 //
 // NB: via holes are not checked. There is a presumption that a physical object goes
 // through a pad hole, which is not the case for via holes.
 //
 
 auto testPadAgainstCourtyards =
 [&]( const PAD* pad, const FOOTPRINT* fp )
 {
 int errorCode = 0;
 
 if( pad->GetAttribute() == PAD_ATTRIB::PTH )
 errorCode = DRCE_PTH_IN_COURTYARD;
 else if( pad->GetAttribute() == PAD_ATTRIB::NPTH )
 errorCode = DRCE_NPTH_IN_COURTYARD;
 else
 return;
 
 if( m_drcEngine->IsErrorLimitExceeded( errorCode ) )
 return;
 
 if( pad->HasHole() )
 {
 std::shared_ptr<SHAPE_SEGMENT> hole = pad->GetEffectiveHoleShape();
 const SHAPE_POLY_SET& front = fp->GetCourtyard( F_CrtYd );
 const SHAPE_POLY_SET& back = fp->GetCourtyard( B_CrtYd );
 
 if( front.OutlineCount() > 0 && front.Collide( hole.get(), 0 ) )
 {
 std::shared_ptr<DRC_ITEM> drce = DRC_ITEM::Create( errorCode );
 drce->SetItems( pad, fp );
 reportViolation( drce, pad->GetPosition(), F_CrtYd );
 }
 else if( back.OutlineCount() > 0 && back.Collide( hole.get(), 0 ) )
 {
 std::shared_ptr<DRC_ITEM> drce = DRC_ITEM::Create( errorCode );
 drce->SetItems( pad, fp );
 reportViolation( drce, pad->GetPosition(), B_CrtYd );
 }
 }
 };
 
 if( ( frontA.OutlineCount() > 0 && frontA_worstCaseBBox.Intersects( fpB_bbox ) )
 || ( backA.OutlineCount() > 0 && backA_worstCaseBBox.Intersects( fpB_bbox ) ) )
 {
 for( const PAD* padB : fpB->Pads() )
 testPadAgainstCourtyards( padB, fpA );
 }
 
 if( ( frontB.OutlineCount() > 0 && frontB.BBoxFromCaches().Intersects( fpA_bbox ) )
 || ( backB.OutlineCount() > 0 && backB.BBoxFromCaches().Intersects( fpA_bbox ) ) )
 {
 for( const PAD* padA : fpA->Pads() )
 testPadAgainstCourtyards( padA, fpB );
 }
 
 if( m_drcEngine->IsCancelled() )
 return false;
 }
 }
 
 return !m_drcEngine->IsCancelled();
}
 
 
bool DRC_TEST_PROVIDER_COURTYARD_CLEARANCE::Run()
{
 m_board = m_drcEngine->GetBoard();
 DRC_CONSTRAINT constraint;
 
 if( m_drcEngine->QueryWorstConstraint( COURTYARD_CLEARANCE_CONSTRAINT, constraint ) )
 m_largestCourtyardClearance = constraint.GetValue().Min();
 
 reportAux( wxT( "Worst courtyard clearance : %d nm" ), m_largestCourtyardClearance );
 
 if( !testFootprintCourtyardDefinitions() )
 return false;
 
 if( !testCourtyardClearances() )
 return false;
 
 return true;
}
 
 
namespace detail
{
 static DRC_REGISTER_TEST_PROVIDER<DRC_TEST_PROVIDER_COURTYARD_CLEARANCE> dummy;
}