kicad/pcbnew/graphics_cleaner.cpp

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2004-2018 Jean-Pierre Charras, jp.charras at wanadoo.fr
* Copyright (C) 2011 Wayne Stambaugh <stambaughw@verizon.net>
* Copyright (C) 1992-2023 KiCad Developers, see AUTHORS.txt for contributors.
*
* 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 <reporter.h>
#include <macros.h>
#include <board_commit.h>
#include <cleanup_item.h>
#include <pcb_shape.h>
#include <pad.h>
#include <footprint.h>
#include <graphics_cleaner.h>
#include <board_design_settings.h>
#include <tool/tool_manager.h>
#include <tools/pad_tool.h>
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GRAPHICS_CLEANER::GRAPHICS_CLEANER( DRAWINGS& aDrawings, FOOTPRINT* aParentFootprint,
BOARD_COMMIT& aCommit, TOOL_MANAGER* aToolMgr ) :
m_drawings( aDrawings ),
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m_parentFootprint( aParentFootprint ),
m_commit( aCommit ),
m_toolMgr( aToolMgr ),
m_dryRun( true ),
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m_epsilon( 0 ),
m_itemsList( nullptr )
{
}
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void GRAPHICS_CLEANER::CleanupBoard( bool aDryRun,
std::vector<std::shared_ptr<CLEANUP_ITEM>>* aItemsList,
bool aMergeRects, bool aDeleteRedundant, bool aMergePads )
{
m_dryRun = aDryRun;
m_itemsList = aItemsList;
m_epsilon = m_commit.GetBoard()->GetDesignSettings().m_MaxError;
// Clear the flag used to mark some shapes as deleted, in dry run:
for( BOARD_ITEM* drawing : m_drawings )
drawing->ClearFlags( IS_DELETED );
if( aDeleteRedundant )
cleanupShapes();
if( aMergeRects )
mergeRects();
if( aMergePads )
mergePads();
// Clear the flag used to mark some shapes:
for( BOARD_ITEM* drawing : m_drawings )
drawing->ClearFlags( IS_DELETED );
}
bool equivalent( const VECTOR2I& a, const VECTOR2I& b, int epsilon )
{
return abs( a.x - b.x ) < epsilon && abs( a.y - b.y ) < epsilon;
};
bool GRAPHICS_CLEANER::isNullShape( PCB_SHAPE* aShape )
{
switch( aShape->GetShape() )
{
case SHAPE_T::SEGMENT:
case SHAPE_T::RECT:
case SHAPE_T::ARC:
return equivalent( aShape->GetStart(), aShape->GetEnd(), m_epsilon );
case SHAPE_T::CIRCLE:
return aShape->GetRadius() == 0;
case SHAPE_T::POLY:
return aShape->GetPointCount() == 0;
case SHAPE_T::BEZIER:
aShape->RebuildBezierToSegmentsPointsList( aShape->GetWidth() );
// If the Bezier points list contains 2 points, it is equivalent to a segment
if( aShape->GetBezierPoints().size() == 2 )
return equivalent( aShape->GetStart(), aShape->GetEnd(), m_epsilon );
// If the Bezier points list contains 1 points, it is equivalent to a point
return aShape->GetBezierPoints().size() < 2;
default:
UNIMPLEMENTED_FOR( aShape->SHAPE_T_asString() );
return false;
}
}
bool GRAPHICS_CLEANER::areEquivalent( PCB_SHAPE* aShape1, PCB_SHAPE* aShape2 )
{
if( aShape1->GetShape() != aShape2->GetShape()
|| aShape1->GetLayer() != aShape2->GetLayer()
|| aShape1->GetWidth() != aShape2->GetWidth() )
{
return false;
}
switch( aShape1->GetShape() )
{
case SHAPE_T::SEGMENT:
case SHAPE_T::RECT:
case SHAPE_T::CIRCLE:
return equivalent( aShape1->GetStart(), aShape2->GetStart(), m_epsilon )
&& equivalent( aShape1->GetEnd(), aShape2->GetEnd(), m_epsilon );
case SHAPE_T::ARC:
return equivalent( aShape1->GetCenter(), aShape2->GetCenter(), m_epsilon )
&& equivalent( aShape1->GetStart(), aShape2->GetStart(), m_epsilon )
&& equivalent( aShape1->GetEnd(), aShape2->GetEnd(), m_epsilon );
case SHAPE_T::POLY:
// TODO
return false;
case SHAPE_T::BEZIER:
return equivalent( aShape1->GetStart(), aShape2->GetStart(), m_epsilon )
&& equivalent( aShape1->GetEnd(), aShape2->GetEnd(), m_epsilon )
&& equivalent( aShape1->GetBezierC1(), aShape2->GetBezierC1(), m_epsilon )
&& equivalent( aShape1->GetBezierC2(), aShape2->GetBezierC2(), m_epsilon );
default:
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wxFAIL_MSG( wxT( "GRAPHICS_CLEANER::areEquivalent unimplemented for " )
+ aShape1->SHAPE_T_asString() );
return false;
}
}
void GRAPHICS_CLEANER::cleanupShapes()
{
// Remove duplicate shapes (2 superimposed identical shapes):
for( auto it = m_drawings.begin(); it != m_drawings.end(); it++ )
{
PCB_SHAPE* shape = dynamic_cast<PCB_SHAPE*>( *it );
if( !shape || shape->HasFlag( IS_DELETED ) )
continue;
if( isNullShape( shape ) )
{
std::shared_ptr<CLEANUP_ITEM> item = std::make_shared<CLEANUP_ITEM>( CLEANUP_NULL_GRAPHIC );
item->SetItems( shape );
m_itemsList->push_back( item );
if( !m_dryRun )
m_commit.Remove( shape );
continue;
}
for( auto it2 = it + 1; it2 != m_drawings.end(); it2++ )
{
PCB_SHAPE* shape2 = dynamic_cast<PCB_SHAPE*>( *it2 );
if( !shape2 || shape2->HasFlag( IS_DELETED ) )
continue;
if( areEquivalent( shape, shape2 ) )
{
std::shared_ptr<CLEANUP_ITEM> item = std::make_shared<CLEANUP_ITEM>( CLEANUP_DUPLICATE_GRAPHIC );
item->SetItems( shape2 );
m_itemsList->push_back( item );
shape2->SetFlags(IS_DELETED );
if( !m_dryRun )
m_commit.Remove( shape2 );
}
}
}
}
void GRAPHICS_CLEANER::mergeRects()
{
struct SIDE_CANDIDATE
{
SIDE_CANDIDATE( PCB_SHAPE* aShape ) :
start( aShape->GetStart() ),
end( aShape->GetEnd() ),
shape( aShape )
{
if( start.x > end.x || start.y > end.y )
std::swap( start, end );
}
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VECTOR2I start;
VECTOR2I end;
PCB_SHAPE* shape;
};
std::vector<SIDE_CANDIDATE*> sides;
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std::map<VECTOR2I, std::vector<SIDE_CANDIDATE*>> ptMap;
// First load all the candidates into the side vector and layer maps
for( BOARD_ITEM* item : m_drawings )
{
PCB_SHAPE* shape = dynamic_cast<PCB_SHAPE*>( item );
if( !shape || isNullShape( shape ) || shape->GetShape() != SHAPE_T::SEGMENT )
continue;
if( shape->GetStart().x == shape->GetEnd().x || shape->GetStart().y == shape->GetEnd().y )
{
sides.emplace_back( new SIDE_CANDIDATE( shape ) );
ptMap[ sides.back()->start ].push_back( sides.back() );
}
}
// Now go through the sides and try and match lines into rectangles
for( SIDE_CANDIDATE* side : sides )
{
if( side->shape->HasFlag( IS_DELETED ) )
continue;
SIDE_CANDIDATE* left = nullptr;
SIDE_CANDIDATE* top = nullptr;
SIDE_CANDIDATE* right = nullptr;
SIDE_CANDIDATE* bottom = nullptr;
auto viable = [&]( SIDE_CANDIDATE* aCandidate ) -> bool
{
return aCandidate->shape->GetLayer() == side->shape->GetLayer()
&& aCandidate->shape->GetWidth() == side->shape->GetWidth()
&& !aCandidate->shape->HasFlag( IS_DELETED );
};
if( side->start.x == side->end.x )
{
// We've found a possible left; see if we have a top
//
left = side;
for( SIDE_CANDIDATE* candidate : ptMap[ left->start ] )
{
if( candidate != left && viable( candidate ) )
{
top = candidate;
break;
}
}
}
else if( side->start.y == side->end.y )
{
// We've found a possible top; see if we have a left
//
top = side;
for( SIDE_CANDIDATE* candidate : ptMap[ top->start ] )
{
if( candidate != top && viable( candidate ) )
{
left = candidate;
break;
}
}
}
if( top && left )
{
// See if we can fill in the other two sides
//
for( SIDE_CANDIDATE* candidate : ptMap[ top->end ] )
{
if( candidate != top && candidate != left && viable( candidate ) )
{
right = candidate;
break;
}
}
for( SIDE_CANDIDATE* candidate : ptMap[ left->end ] )
{
if( candidate != top && candidate != left && viable( candidate ) )
{
bottom = candidate;
break;
}
}
if( right && bottom && right->end == bottom->end )
{
left->shape->SetFlags( IS_DELETED );
top->shape->SetFlags( IS_DELETED );
right->shape->SetFlags( IS_DELETED );
bottom->shape->SetFlags( IS_DELETED );
std::shared_ptr<CLEANUP_ITEM> item = std::make_shared<CLEANUP_ITEM>( CLEANUP_LINES_TO_RECT );
item->SetItems( left->shape, top->shape, right->shape, bottom->shape );
m_itemsList->push_back( item );
if( !m_dryRun )
{
PCB_SHAPE* rect = new PCB_SHAPE( m_parentFootprint );
rect->SetShape( SHAPE_T::RECT );
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rect->SetFilled( false );
rect->SetStart( top->start );
rect->SetEnd( bottom->end );
rect->SetLayer( top->shape->GetLayer() );
rect->SetStroke( top->shape->GetStroke() );
m_commit.Add( rect );
m_commit.Remove( left->shape );
m_commit.Remove( top->shape );
m_commit.Remove( right->shape );
m_commit.Remove( bottom->shape );
}
}
}
}
for( SIDE_CANDIDATE* side : sides )
delete side;
}
void GRAPHICS_CLEANER::mergePads()
{
wxCHECK_MSG( m_parentFootprint, /*void*/, wxT( "mergePads() is FootprintEditor only" ) );
PAD_TOOL* padTool = m_toolMgr->GetTool<PAD_TOOL>();
std::map<wxString, int> padToNetTieGroupMap = m_parentFootprint->MapPadNumbersToNetTieGroups();
for( PAD* pad : m_parentFootprint->Pads() )
{
// Don't merge a pad that's in a net-tie pad group. (We don't care which group.)
if( padToNetTieGroupMap[ pad->GetNumber() ] >= 0 )
continue;
std::vector<PCB_SHAPE*> shapes = padTool->RecombinePad( pad, m_dryRun, m_commit );
if( !shapes.empty() )
{
std::shared_ptr<CLEANUP_ITEM> item = std::make_shared<CLEANUP_ITEM>( CLEANUP_MERGE_PAD );
for( PCB_SHAPE* shape : shapes )
item->AddItem( shape );
item->AddItem( pad );
m_itemsList->push_back( item );
}
}
}