pad_custom_shape_functions.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2018 Jean-Pierre Charras, jp.charras at wanadoo.fr
 * 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 <board.h>
#include <board_design_settings.h>
#include <board_item.h>
#include <pcb_shape.h>
#include <pad.h>
#include <convert_basic_shapes_to_polygon.h>
#include <geometry/shape_rect.h>
 
 
/*
 * Has meaning only for free shape pads.
 * add a free shape to the shape list.
 * the shape is a polygon (can be with thick outline), segment, circle or arc
 */
 
void PAD::AddPrimitivePoly( const SHAPE_POLY_SET& aPoly, int aThickness, bool aFilled )
{
 // If aPoly has holes, convert it to a polygon with no holes.
 SHAPE_POLY_SET poly_no_hole;
 poly_no_hole.Append( aPoly );
 
 if( poly_no_hole.HasHoles() )
 poly_no_hole.Fracture( SHAPE_POLY_SET::PM_STRICTLY_SIMPLE );
 
 // There should never be multiple shapes, but if there are, we split them into
 // primitives so that we can edit them both.
 for( int ii = 0; ii < poly_no_hole.OutlineCount(); ++ii )
 {
 SHAPE_POLY_SET poly_outline( poly_no_hole.COutline( ii ) );
 PCB_SHAPE* item = new PCB_SHAPE();
 item->SetShape( SHAPE_T::POLY );
 item->SetFilled( aFilled );
 item->SetPolyShape( poly_outline );
 item->SetStroke( STROKE_PARAMS( aThickness, LINE_STYLE::SOLID ) );
 item->SetParent( this );
 m_editPrimitives.emplace_back( item );
 }
 
 SetDirty();
}
 
 
void PAD::AddPrimitivePoly( const std::vector<VECTOR2I>& aPoly, int aThickness, bool aFilled )
{
 PCB_SHAPE* item = new PCB_SHAPE( nullptr, SHAPE_T::POLY );
 item->SetFilled( aFilled );
 item->SetPolyPoints( aPoly );
 item->SetStroke( STROKE_PARAMS( aThickness, LINE_STYLE::SOLID ) );
 item->SetParent( this );
 m_editPrimitives.emplace_back( item );
 SetDirty();
}
 
 
void PAD::ReplacePrimitives( const std::vector<std::shared_ptr<PCB_SHAPE>>& aPrimitivesList )
{
 // clear old list
 DeletePrimitivesList();
 
 // Import to the given shape list
 if( aPrimitivesList.size() )
 AppendPrimitives( aPrimitivesList );
 
 SetDirty();
}
 
 
void PAD::AppendPrimitives( const std::vector<std::shared_ptr<PCB_SHAPE>>& aPrimitivesList )
{
 // Add duplicates of aPrimitivesList to the pad primitives list:
 for( const std::shared_ptr<PCB_SHAPE>& prim : aPrimitivesList )
 AddPrimitive( new PCB_SHAPE( *prim ) );
 
 SetDirty();
}
 
 
void PAD::AddPrimitive( PCB_SHAPE* aPrimitive )
{
 aPrimitive->SetParent( this );
 m_editPrimitives.emplace_back( aPrimitive );
 
 SetDirty();
}
 
 
// clear the basic shapes list and associated data
void PAD::DeletePrimitivesList()
{
 m_editPrimitives.clear();
 
 SetDirty();
}
 
 
void PAD::addPadPrimitivesToPolygon( SHAPE_POLY_SET* aMergedPolygon, int aError,
 ERROR_LOC aErrorLoc ) const
{
 SHAPE_POLY_SET polyset;
 
 for( const std::shared_ptr<PCB_SHAPE>& primitive : m_editPrimitives )
 {
 if( !primitive->IsProxyItem() )
 primitive->TransformShapeToPolygon( polyset, UNDEFINED_LAYER, 0, aError, aErrorLoc );
 }
 
 polyset.Simplify( SHAPE_POLY_SET::PM_FAST );
 
 // Merge all polygons with the initial pad anchor shape
 if( polyset.OutlineCount() )
 {
 aMergedPolygon->BooleanAdd( polyset, SHAPE_POLY_SET::PM_STRICTLY_SIMPLE );
 aMergedPolygon->Fracture( SHAPE_POLY_SET::PM_STRICTLY_SIMPLE );
 }
}
 
void PAD::MergePrimitivesAsPolygon( SHAPE_POLY_SET* aMergedPolygon, ERROR_LOC aErrorLoc ) const
{
 const BOARD* board = GetBoard();
 int maxError = board ? board->GetDesignSettings().m_MaxError : ARC_HIGH_DEF;
 
 aMergedPolygon->RemoveAllContours();
 
 // Add the anchor pad shape in aMergedPolygon, others in aux_polyset:
 // The anchor pad is always at 0,0
 switch( GetAnchorPadShape() )
 {
 case PAD_SHAPE::RECTANGLE:
 {
 SHAPE_RECT rect( -GetSize().x / 2, -GetSize().y / 2, GetSize().x, GetSize().y );
 aMergedPolygon->AddOutline( rect.Outline() );
 }
 break;
 
 default:
 case PAD_SHAPE::CIRCLE:
 TransformCircleToPolygon( *aMergedPolygon, VECTOR2I( 0, 0 ), GetSize().x / 2, maxError,
 aErrorLoc );
 break;
 }
 
 addPadPrimitivesToPolygon( aMergedPolygon, maxError, aErrorLoc );
}