drc_test_provider_silk_to_mask.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.
 *
 * 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.,
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 */

#include <common.h>
#include <board.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/drc_rtree.h>

/*
 Silk to pads clearance test. Check all pads against silkscreen (mask opening in the pad vs silkscreen)
 Errors generated:
 - DRCE_SILK_MASK_CLEARANCE
*/

class DRC_TEST_PROVIDER_SILK_TO_MASK : public ::DRC_TEST_PROVIDER
{
public:
 DRC_TEST_PROVIDER_SILK_TO_MASK ():
 m_board( nullptr ),
 m_largestClearance( 0 )
 {
 }

 virtual ~DRC_TEST_PROVIDER_SILK_TO_MASK()
 {
 }

 virtual bool Run() override;

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

 virtual const wxString GetDescription() const override
 {
 return "Tests for silkscreen being clipped by solder mask";
 }

 virtual int GetNumPhases() const override
 {
 return 1;
 }

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

private:

 BOARD* m_board;
 int m_largestClearance;
};


bool DRC_TEST_PROVIDER_SILK_TO_MASK::Run()
{
 m_board = m_drcEngine->GetBoard();

 if( m_drcEngine->IsErrorLimitExceeded( DRCE_SILK_MASK_CLEARANCE ) )
 {
 reportAux( "Silkscreen clipping violations ignored. Tests not run." );
 return true; // continue with other tests
 }

 DRC_CONSTRAINT worstClearanceConstraint;
 m_largestClearance = 0;

 if( m_drcEngine->QueryWorstConstraint( SILK_CLEARANCE_CONSTRAINT, worstClearanceConstraint ) )
 m_largestClearance = worstClearanceConstraint.m_Value.Min();

 reportAux( "Worst clearance : %d nm", m_largestClearance );

 if( !reportPhase( _( "Checking silkscreen for potential soldermask clipping..." ) ) )
 return false; // DRC cancelled

 DRC_RTREE maskTree, silkTree;

 auto addMaskToTree =
 [&maskTree]( BOARD_ITEM *item ) -> bool
 {
 for( PCB_LAYER_ID layer : { F_Mask, B_Mask } )
 {
 if( item->IsOnLayer( layer ) )
 maskTree.Insert( item, layer );
 }

 return true;
 };

 auto addSilkToTree =
 [&silkTree]( BOARD_ITEM *item ) -> bool
 {
 for( PCB_LAYER_ID layer : { F_SilkS, B_SilkS } )
 {
 if( item->IsOnLayer( layer ) )
 silkTree.Insert( item, layer );
 }

 return true;
 };

 auto checkClearance =
 [&]( const DRC_RTREE::LAYER_PAIR& aLayers, DRC_RTREE::ITEM_WITH_SHAPE* aRefItem,
 DRC_RTREE::ITEM_WITH_SHAPE* aTestItem, bool* aCollisionDetected ) -> bool
 {
 if( m_drcEngine->IsErrorLimitExceeded( DRCE_SILK_MASK_CLEARANCE ) )
 return false;

 if( isInvisibleText( aRefItem->parent ) )
 return true;

 if( isInvisibleText( aTestItem->parent ) )
 return true;

 auto constraint = m_drcEngine->EvalRules( SILK_CLEARANCE_CONSTRAINT,
 aRefItem->parent, aTestItem->parent,
 aLayers.first );

 int minClearance = constraint.GetValue().Min();

 if( minClearance < 0 )
 return true;

 int actual;
 VECTOR2I pos;

 if( aRefItem->shape->Collide( aTestItem->shape, minClearance, &actual, &pos ) )
 {
 std::shared_ptr<DRC_ITEM> drce = DRC_ITEM::Create( DRCE_SILK_MASK_CLEARANCE );

 if( minClearance > 0 )
 {
 m_msg.Printf( _( "(%s clearance %s; actual %s)" ),
 constraint.GetName(),
 MessageTextFromValue( userUnits(), minClearance ),
 MessageTextFromValue( userUnits(), actual ) );

 drce->SetErrorMessage( drce->GetErrorText() + wxS( " " ) + m_msg );
 }

 drce->SetItems( aRefItem->parent, aTestItem->parent );
 drce->SetViolatingRule( constraint.GetParentRule() );

 reportViolation( drce, (wxPoint) pos );

 *aCollisionDetected = true;
 }

 return true;
 };

 int numMask = forEachGeometryItem( s_allBasicItems, LSET( 2, F_Mask, B_Mask ), addMaskToTree );
 int numSilk = forEachGeometryItem( s_allBasicItems, LSET( 2, F_SilkS, B_SilkS ), addSilkToTree );

 reportAux( _("Testing %d mask apertures against %d silkscreen features."), numMask, numSilk );

 const std::vector<DRC_RTREE::LAYER_PAIR> layerPairs =
 {
 DRC_RTREE::LAYER_PAIR( F_SilkS, F_Mask ),
 DRC_RTREE::LAYER_PAIR( B_SilkS, B_Mask )
 };

 // This is the number of tests between 2 calls to the progress bar
 const int delta = 250;

 maskTree.QueryCollidingPairs( &silkTree, layerPairs, checkClearance, m_largestClearance,
 [&]( int aCount, int aSize ) -> bool
 {
 return reportProgress( aCount, aSize, delta );
 } );

 reportRuleStatistics();

 return true;
}


std::set<DRC_CONSTRAINT_T> DRC_TEST_PROVIDER_SILK_TO_MASK::GetConstraintTypes() const
{
 return { SILK_CLEARANCE_CONSTRAINT };
}


namespace detail
{
 static DRC_REGISTER_TEST_PROVIDER<DRC_TEST_PROVIDER_SILK_TO_MASK> dummy;
}