graphics_importer_lib_symbol.cpp

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/*
 * This program source code file is part of KICAD, a free EDA CAD application.
 *
 * Copyright (C) 2016 CERN
 * @author Maciej Suminski <[email protected]>
 * Copyright (C) 2018-2023 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 "graphics_importer_lib_symbol.h"
 
#include <lib_symbol.h>
#include <lib_shape.h>
#include <lib_text.h>
#include <memory>
#include <tuple>
 
 
GRAPHICS_IMPORTER_LIB_SYMBOL::GRAPHICS_IMPORTER_LIB_SYMBOL( LIB_SYMBOL* aSymbol, int aUnit ) :
 m_symbol( aSymbol ), m_unit( aUnit )
{
 m_millimeterToIu = schIUScale.mmToIU( 1.0 );
}
 
 
VECTOR2I GRAPHICS_IMPORTER_LIB_SYMBOL::MapCoordinate( const VECTOR2D& aCoordinate )
{
 VECTOR2D coord = aCoordinate;
 coord *= GetScale();
 coord += GetImportOffsetMM();
 coord *= GetMillimeterToIuFactor();
 
 return VECTOR2I( KiROUND( coord.x ), KiROUND( coord.y ) );
}
 
 
int GRAPHICS_IMPORTER_LIB_SYMBOL::MapLineWidth( double aLineWidth )
{
 VECTOR2D factor = ImportScalingFactor();
 double scale = ( std::abs( factor.x ) + std::abs( factor.y ) ) * 0.5;
 
 if( aLineWidth <= 0.0 )
 return int( GetLineWidthMM() * scale );
 
 // aLineWidth is in mm:
 return int( aLineWidth * scale );
}
 
 
STROKE_PARAMS GRAPHICS_IMPORTER_LIB_SYMBOL::MapStrokeParams( const IMPORTED_STROKE& aStroke )
{
 double width = aStroke.GetWidth();
 
 return STROKE_PARAMS( width != -1 ? MapLineWidth( width ) : -1, aStroke.GetPlotStyle(),
 aStroke.GetColor() );
}
 
 
void GRAPHICS_IMPORTER_LIB_SYMBOL::AddLine( const VECTOR2D& aStart, const VECTOR2D& aEnd,
 const IMPORTED_STROKE& aStroke )
{
 VECTOR2I pt0 = MapCoordinate( aStart );
 VECTOR2I pt1 = MapCoordinate( aEnd );
 
 // Skip 0 len lines:
 if( pt0 == pt1 )
 return;
 
 std::unique_ptr<LIB_SHAPE> line = std::make_unique<LIB_SHAPE>( m_symbol, SHAPE_T::POLY );
 line->SetUnit( m_unit );
 line->SetStroke( MapStrokeParams( aStroke ) );
 
 line->AddPoint( pt0 );
 line->AddPoint( pt1 );
 
 addItem( std::move( line ) );
}
 
 
void GRAPHICS_IMPORTER_LIB_SYMBOL::AddCircle( const VECTOR2D& aCenter, double aRadius,
 const IMPORTED_STROKE& aStroke, bool aFilled,
 const COLOR4D& aFillColor )
{
 std::unique_ptr<LIB_SHAPE> circle = std::make_unique<LIB_SHAPE>( m_symbol, SHAPE_T::CIRCLE );
 circle->SetUnit( m_unit );
 circle->SetFillColor( aFillColor );
 circle->SetFilled( aFilled );
 circle->SetStroke( MapStrokeParams( aStroke ) );
 circle->SetStart( MapCoordinate( aCenter ) );
 circle->SetEnd( MapCoordinate( VECTOR2D( aCenter.x + aRadius, aCenter.y ) ) );
 
 addItem( std::move( circle ) );
}
 
 
void GRAPHICS_IMPORTER_LIB_SYMBOL::AddArc( const VECTOR2D& aCenter, const VECTOR2D& aStart,
 const EDA_ANGLE& aAngle, const IMPORTED_STROKE& aStroke )
{
 std::unique_ptr<LIB_SHAPE> arc = std::make_unique<LIB_SHAPE>( m_symbol, SHAPE_T::ARC );
 arc->SetUnit( m_unit );
 
 VECTOR2D end = aStart;
 VECTOR2D mid = aStart;
 
 RotatePoint( end, aCenter, -aAngle );
 RotatePoint( mid, aCenter, -aAngle / 2.0 );
 
 arc->SetArcGeometry( MapCoordinate( aStart ), MapCoordinate( mid ), MapCoordinate( end ) );
 
 // Ensure the arc can be handled by KiCad. Arcs with a too big radius cannot.
 // The criteria used here is radius < MAX_INT / 2.
 // this is not perfect, but we do not know the exact final position of the arc, so
 // we cannot test the coordinate values, because the arc can be moved before being placed.
 VECTOR2D center = CalcArcCenter( arc->GetStart(), arc->GetEnd(), aAngle );
 double radius = ( center - arc->GetStart() ).EuclideanNorm();
 constexpr double rd_max_value = std::numeric_limits<VECTOR2I::coord_type>::max() / 2.0;
 
 if( radius >= rd_max_value )
 {
 // Arc cannot be handled: convert it to a segment
 AddLine( aStart, end, aStroke );
 return;
 }
 
 arc->SetStroke( MapStrokeParams( aStroke ) );
 
 addItem( std::move( arc ) );
}
 
 
void GRAPHICS_IMPORTER_LIB_SYMBOL::AddPolygon( const std::vector<VECTOR2D>& aVertices,
 const IMPORTED_STROKE& aStroke, bool aFilled,
 const COLOR4D& aFillColor )
{
 std::vector<VECTOR2I> convertedPoints;
 convertedPoints.reserve( aVertices.size() );
 
 for( const VECTOR2D& precisePoint : aVertices )
 convertedPoints.emplace_back( MapCoordinate( precisePoint ) );
 
 if( convertedPoints.empty() )
 return;
 
 std::unique_ptr<LIB_SHAPE> polygon = std::make_unique<LIB_SHAPE>( m_symbol, SHAPE_T::POLY );
 polygon->SetUnit( m_unit );
 
 if( aFilled )
 {
 polygon->SetFillMode( aFillColor != COLOR4D::UNSPECIFIED ? FILL_T::FILLED_WITH_COLOR
 : FILL_T::FILLED_SHAPE );
 }
 
 polygon->SetFillColor( aFillColor );
 polygon->SetPolyPoints( convertedPoints );
 polygon->AddPoint( convertedPoints[0] ); // Need to close last point for libedit
 
 polygon->SetStroke( MapStrokeParams( aStroke ) );
 
 addItem( std::move( polygon ) );
}
 
 
void GRAPHICS_IMPORTER_LIB_SYMBOL::AddText( const VECTOR2D& aOrigin, const wxString& aText,
 double aHeight, double aWidth, double aThickness,
 double aOrientation, GR_TEXT_H_ALIGN_T aHJustify,
 GR_TEXT_V_ALIGN_T aVJustify, const COLOR4D& aColor )
{
 std::unique_ptr<LIB_TEXT> textItem = std::make_unique<LIB_TEXT>( m_symbol );
 textItem->SetUnit( m_unit );
 textItem->SetTextColor( aColor );
 textItem->SetTextThickness( MapLineWidth( aThickness ) );
 textItem->SetTextPos( MapCoordinate( aOrigin ) );
 textItem->SetTextAngle( EDA_ANGLE( aOrientation, DEGREES_T ) );
 textItem->SetTextWidth( aWidth * ImportScalingFactor().x );
 textItem->SetTextHeight( aHeight * ImportScalingFactor().y );
 textItem->SetVertJustify( aVJustify );
 textItem->SetHorizJustify( aHJustify );
 textItem->SetText( aText );
 
 addItem( std::move( textItem ) );
}
 
 
void GRAPHICS_IMPORTER_LIB_SYMBOL::AddSpline( const VECTOR2D& aStart,
 const VECTOR2D& aBezierControl1,
 const VECTOR2D& aBezierControl2, const VECTOR2D& aEnd,
 const IMPORTED_STROKE& aStroke )
{
 std::unique_ptr<LIB_SHAPE> spline = std::make_unique<LIB_SHAPE>( m_symbol, SHAPE_T::BEZIER );
 spline->SetUnit( m_unit );
 spline->SetStroke( MapStrokeParams( aStroke ) );
 spline->SetStart( MapCoordinate( aStart ) );
 spline->SetBezierC1( MapCoordinate( aBezierControl1 ) );
 spline->SetBezierC2( MapCoordinate( aBezierControl2 ) );
 spline->SetEnd( MapCoordinate( aEnd ) );
 spline->RebuildBezierToSegmentsPointsList( aStroke.GetWidth() );
 
 // If the spline is degenerated (i.e. a segment) add it as segment or discard it if
 // null (i.e. very small) length
 if( spline->GetBezierPoints().size() <= 2 )
 {
 spline->SetShape( SHAPE_T::SEGMENT );
 int dist = VECTOR2I( spline->GetStart() - spline->GetEnd() ).EuclideanNorm();
 
// segment smaller than MIN_SEG_LEN_ACCEPTABLE_NM nanometers are skipped.
#define MIN_SEG_LEN_ACCEPTABLE_NM 20
 if( dist < MIN_SEG_LEN_ACCEPTABLE_NM )
 return;
 }
 
 addItem( std::move( spline ) );
}