drc_test_provider_edge_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:
 * 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 <pcb_shape.h>
#include <footprint.h>
#include <geometry/seg.h>
#include <geometry/shape_segment.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"
 
/*
 Board edge clearance test. Checks all items for their mechanical clearances against the board
 edge.
 Errors generated:
 - DRCE_EDGE_CLEARANCE
 - DRCE_SILK_EDGE_CLEARANCE
 
 TODO:
 - separate holes to edge check
 - tester only looks for edge crossings. it doesn't check if items are inside/outside the board
 area.
 - pad test missing!
*/
 
class DRC_TEST_PROVIDER_EDGE_CLEARANCE : public DRC_TEST_PROVIDER_CLEARANCE_BASE
{
public:
 DRC_TEST_PROVIDER_EDGE_CLEARANCE () :
 DRC_TEST_PROVIDER_CLEARANCE_BASE(),
 m_largestEdgeClearance( 0 )
 {
 }
 
 virtual ~DRC_TEST_PROVIDER_EDGE_CLEARANCE()
 {
 }
 
 virtual bool Run() override;
 
 virtual const wxString GetName() const override
 {
 return wxT( "edge_clearance" );
 }
 
 virtual const wxString GetDescription() const override
 {
 return wxT( "Tests items vs board edge clearance" );
 }
 
private:
 bool testAgainstEdge( BOARD_ITEM* item, SHAPE* itemShape, BOARD_ITEM* other,
 DRC_CONSTRAINT_T aConstraintType, PCB_DRC_CODE aErrorCode );
 
private:
 std::vector<PAD*> m_castellatedPads;
 int m_largestEdgeClearance;
};
 
 
bool DRC_TEST_PROVIDER_EDGE_CLEARANCE::testAgainstEdge( BOARD_ITEM* item, SHAPE* itemShape,
 BOARD_ITEM* edge,
 DRC_CONSTRAINT_T aConstraintType,
 PCB_DRC_CODE aErrorCode )
{
 std::shared_ptr<SHAPE> shape;
 
 if( edge->Type() == PCB_PAD_T )
 shape = edge->GetEffectiveHoleShape();
 else
 shape = edge->GetEffectiveShape( Edge_Cuts );
 
 auto constraint = m_drcEngine->EvalRules( aConstraintType, edge, item, UNDEFINED_LAYER );
 int minClearance = constraint.GetValue().Min();
 int actual;
 VECTOR2I pos;
 
 if( constraint.GetSeverity() != RPT_SEVERITY_IGNORE && minClearance >= 0 )
 {
 if( itemShape->Collide( shape.get(), minClearance, &actual, &pos ) )
 {
 // Exact clearance is allowed
 if( minClearance > 0 && actual == minClearance )
 return true;
 
 if( item->Type() == PCB_TRACE_T || item->Type() == PCB_ARC_T )
 {
 // Edge collisions are allowed inside the holes of castellated pads
 for( PAD* castellatedPad : m_castellatedPads )
 {
 if( castellatedPad->GetEffectiveHoleShape()->Collide( pos ) )
 return true;
 }
 }
 
 std::shared_ptr<DRC_ITEM> drce = DRC_ITEM::Create( aErrorCode );
 
 // Only report clearance info if there is any; otherwise it's just a straight collision
 if( minClearance > 0 )
 {
 wxString msg = formatMsg( _( "(%s clearance %s; actual %s)" ),
 constraint.GetName(),
 minClearance,
 actual );
 
 drce->SetErrorMessage( drce->GetErrorText() + wxS( " " ) + msg );
 }
 
 drce->SetItems( edge->m_Uuid, item->m_Uuid );
 drce->SetViolatingRule( constraint.GetParentRule() );
 
 reportViolation( drce, pos, Edge_Cuts );
 return false; // don't report violations with multiple edges; one is enough
 }
 }
 
 return true;
}
 
 
bool DRC_TEST_PROVIDER_EDGE_CLEARANCE::Run()
{
 if( !m_drcEngine->IsErrorLimitExceeded( DRCE_EDGE_CLEARANCE ) )
 {
 if( !reportPhase( _( "Checking copper to board edge clearances..." ) ) )
 return false; // DRC cancelled
 }
 else if( m_drcEngine->IsErrorLimitExceeded( DRCE_SILK_EDGE_CLEARANCE ) )
 {
 if( !reportPhase( _( "Checking silk to board edge clearances..." ) ) )
 return false; // DRC cancelled
 }
 else
 {
 reportAux( wxT( "Edge clearance violations ignored. Tests not run." ) );
 return true; // continue with other tests
 }
 
 m_board = m_drcEngine->GetBoard();
 m_castellatedPads.clear();
 
 DRC_CONSTRAINT worstClearanceConstraint;
 
 if( m_drcEngine->QueryWorstConstraint( EDGE_CLEARANCE_CONSTRAINT, worstClearanceConstraint ) )
 m_largestEdgeClearance = worstClearanceConstraint.GetValue().Min();
 
 reportAux( wxT( "Worst clearance : %d nm" ), m_largestEdgeClearance );
 
 /*
 * Build an RTree of the various edges (including NPTH holes) and margins found on the board.
 */
 std::vector<std::unique_ptr<PCB_SHAPE>> edges;
 DRC_RTREE edgesTree;
 
 forEachGeometryItem( { PCB_SHAPE_T }, LSET( 2, Edge_Cuts, Margin ),
 [&]( BOARD_ITEM *item ) -> bool
 {
 PCB_SHAPE* shape = static_cast<PCB_SHAPE*>( item );
 STROKE_PARAMS stroke = shape->GetStroke();
 
 if( item->IsOnLayer( Edge_Cuts ) )
 stroke.SetWidth( 0 );
 
 if( shape->GetShape() == SHAPE_T::RECTANGLE && !shape->IsFilled() )
 {
 // A single rectangle for the board would make the RTree useless, so convert
 // to 4 edges
 edges.emplace_back( static_cast<PCB_SHAPE*>( shape->Clone() ) );
 edges.back()->SetShape( SHAPE_T::SEGMENT );
 edges.back()->SetEndX( shape->GetStartX() );
 edges.back()->SetStroke( stroke );
 edges.back()->SetParentGroup( nullptr );
 edges.emplace_back( static_cast<PCB_SHAPE*>( shape->Clone() ) );
 edges.back()->SetShape( SHAPE_T::SEGMENT );
 edges.back()->SetEndY( shape->GetStartY() );
 edges.back()->SetStroke( stroke );
 edges.back()->SetParentGroup( nullptr );
 edges.emplace_back( static_cast<PCB_SHAPE*>( shape->Clone() ) );
 edges.back()->SetShape( SHAPE_T::SEGMENT );
 edges.back()->SetStartX( shape->GetEndX() );
 edges.back()->SetStroke( stroke );
 edges.back()->SetParentGroup( nullptr );
 edges.emplace_back( static_cast<PCB_SHAPE*>( shape->Clone() ) );
 edges.back()->SetShape( SHAPE_T::SEGMENT );
 edges.back()->SetStartY( shape->GetEndY() );
 edges.back()->SetStroke( stroke );
 edges.back()->SetParentGroup( nullptr );
 }
 else if( shape->GetShape() == SHAPE_T::POLY && !shape->IsFilled() )
 {
 // A single polygon for the board would make the RTree useless, so convert
 // to n edges.
 SHAPE_LINE_CHAIN poly = shape->GetPolyShape().Outline( 0 );
 
 for( size_t ii = 0; ii < poly.GetSegmentCount(); ++ii )
 {
 SEG seg = poly.CSegment( ii );
 edges.emplace_back( static_cast<PCB_SHAPE*>( shape->Clone() ) );
 edges.back()->SetShape( SHAPE_T::SEGMENT );
 edges.back()->SetStart( seg.A );
 edges.back()->SetEnd( seg.B );
 edges.back()->SetStroke( stroke );
 edges.back()->SetParentGroup( nullptr );
 }
 }
 else
 {
 edges.emplace_back( static_cast<PCB_SHAPE*>( shape->Clone() ) );
 edges.back()->SetStroke( stroke );
 edges.back()->SetParentGroup( nullptr );
 }
 
 return true;
 } );
 
 for( const std::unique_ptr<PCB_SHAPE>& edge : edges )
 {
 for( PCB_LAYER_ID layer : { Edge_Cuts, Margin } )
 {
 if( edge->IsOnLayer( layer ) )
 edgesTree.Insert( edge.get(), layer, m_largestEdgeClearance );
 }
 }
 
 for( FOOTPRINT* footprint : m_board->Footprints() )
 {
 for( PAD* pad : footprint->Pads() )
 {
 if( pad->GetAttribute() == PAD_ATTRIB::NPTH && pad->HasHole() )
 {
 // edge-clearances are for milling tolerances (drilling tolerances are handled
 // by hole-clearances)
 if( pad->GetDrillSizeX() != pad->GetDrillSizeY() )
 edgesTree.Insert( pad, Edge_Cuts, m_largestEdgeClearance );
 }
 
 if( pad->GetProperty() == PAD_PROP::CASTELLATED )
 m_castellatedPads.push_back( pad );
 }
 }
 
 /*
 * Test copper and silk items against the set of edges.
 */
 const int progressDelta = 200;
 int count = 0;
 int ii = 0;
 
 forEachGeometryItem( s_allBasicItemsButZones, LSET::AllLayersMask(),
 [&]( BOARD_ITEM *item ) -> bool
 {
 count++;
 return true;
 } );
 
 forEachGeometryItem( s_allBasicItemsButZones, LSET::AllLayersMask(),
 [&]( BOARD_ITEM *item ) -> bool
 {
 bool testCopper = !m_drcEngine->IsErrorLimitExceeded( DRCE_EDGE_CLEARANCE );
 bool testSilk = !m_drcEngine->IsErrorLimitExceeded( DRCE_SILK_EDGE_CLEARANCE );
 
 if( !testCopper && !testSilk )
 return false; // All limits exceeded; we're done
 
 if( !reportProgress( ii++, count, progressDelta ) )
 return false; // DRC cancelled; we're done
 
 if( isInvisibleText( item ) )
 return true; // Continue with other items
 
 if( item->Type() == PCB_PAD_T )
 {
 PAD* pad = static_cast<PAD*>( item );
 
 if( pad->GetProperty() == PAD_PROP::CASTELLATED
 || pad->GetAttribute() == PAD_ATTRIB::CONN )
 {
 return true; // Continue with other items
 }
 }
 
 const std::shared_ptr<SHAPE>& itemShape = item->GetEffectiveShape();
 
 for( PCB_LAYER_ID testLayer : { Edge_Cuts, Margin } )
 {
 if( testCopper && item->IsOnCopperLayer() )
 {
 edgesTree.QueryColliding( item, UNDEFINED_LAYER, testLayer, nullptr,
 [&]( BOARD_ITEM* edge ) -> bool
 {
 return testAgainstEdge( item, itemShape.get(), edge,
 EDGE_CLEARANCE_CONSTRAINT,
 DRCE_EDGE_CLEARANCE );
 },
 m_largestEdgeClearance );
 }
 
 if( testSilk && ( item->IsOnLayer( F_SilkS ) || item->IsOnLayer( B_SilkS ) ) )
 {
 if( edgesTree.QueryColliding( item, UNDEFINED_LAYER, testLayer, nullptr,
 [&]( BOARD_ITEM* edge ) -> bool
 {
 return testAgainstEdge( item, itemShape.get(), edge,
 SILK_CLEARANCE_CONSTRAINT,
 DRCE_SILK_EDGE_CLEARANCE );
 },
 m_largestEdgeClearance ) )
 {
 // violations reported during QueryColliding
 }
 else
 {
 // TODO: check postion being outside board boundary
 }
 }
 }
 
 return true;
 } );
 
 reportRuleStatistics();
 
 return !m_drcEngine->IsCancelled();
}
 
 
namespace detail
{
 static DRC_REGISTER_TEST_PROVIDER<DRC_TEST_PROVIDER_EDGE_CLEARANCE> dummy;
}