sch_shape.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2017 Jean-Pierre Charras, jp.charras at wanadoo.fr
 * Copyright The 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, see <https://www.gnu.org/licenses/>.
 */
 
#include <sch_render_settings.h>
#include <sch_draw_panel.h>
#include <macros.h>
#include <plotters/plotter.h>
#include <base_units.h>
#include <widgets/msgpanel.h>
#include <bitmaps.h>
#include <eda_draw_frame.h>
#include <gr_basic.h>
#include <geometry/geometry_utils.h>
#include <geometry/shape_arc.h>
#include <geometry/shape_ellipse.h>
#include <geometry/shape_line_chain.h>
#include <schematic.h>
#include <api/api_utils.h>
#include <api/schematic/schematic_types.pb.h>
#include <sch_shape.h>
#include <properties/property.h>
#include <properties/property_mgr.h>
 
 
SCH_SHAPE::SCH_SHAPE( SHAPE_T aShape, SCH_LAYER_ID aLayer, int aLineWidth, FILL_T aFillType,
                      KICAD_T aType ) :
    SCH_ITEM( nullptr, aType ),
    EDA_SHAPE( aShape, aLineWidth, aFillType )
{
    SetLayer( aLayer );
}
 
 
EDA_ITEM* SCH_SHAPE::Clone() const
{
    return new SCH_SHAPE( *this );
}
 
 
void SCH_SHAPE::Serialize( google::protobuf::Any& aContainer ) const
{
    using namespace kiapi::common;
 
    kiapi::schematic::types::SchematicGraphicShape msg;
 
    msg.mutable_id()->set_value( m_Uuid.AsStdString() );
    msg.set_locked( IsLocked() ? types::LockedState::LS_LOCKED : types::LockedState::LS_UNLOCKED );
 
    EDA_SHAPE::Serialize( *msg.mutable_shape(), schIUScale );
 
    kiapi::common::PackCustomProperties( msg.mutable_custom_properties(), *this );
    aContainer.PackFrom( msg );
}
 
 
bool SCH_SHAPE::Deserialize( const google::protobuf::Any& aContainer )
{
    using namespace kiapi::common;
 
    kiapi::schematic::types::SchematicGraphicShape msg;
 
    if( !aContainer.UnpackTo( &msg ) )
        return false;
 
    const_cast<KIID&>( m_Uuid ) = KIID( msg.id().value() );
    SetLocked( msg.locked() == types::LockedState::LS_LOCKED );
    kiapi::common::UnpackCustomProperties( msg.custom_properties(), *this );
 
    return EDA_SHAPE::Deserialize( msg.shape(), schIUScale );
}
 
 
void SCH_SHAPE::swapData( SCH_ITEM* aItem )
{
    SCH_SHAPE* shape = static_cast<SCH_SHAPE*>( aItem );
 
    EDA_SHAPE::SwapShape( shape );
}
 
 
void SCH_SHAPE::SetStroke( const STROKE_PARAMS& aStroke )
{
    m_stroke = aStroke;
}
 
 
void SCH_SHAPE::SetFilled( bool aFilled )
{
    if( !aFilled )
        m_fill = FILL_T::NO_FILL;
    else if( GetParentSymbol() )
        m_fill = FILL_T::FILLED_SHAPE;
    else
        m_fill = FILL_T::FILLED_WITH_COLOR;
}
 
 
void SCH_SHAPE::UpdateHatching() const
{
    if( !IsMoving() )
    {
        EDA_SHAPE::UpdateHatching();
        return;
    }
 
    SCH_SHAPE* movingShape = const_cast<SCH_SHAPE*>( this );
    movingShape->ClearFlags( IS_MOVING );
    EDA_SHAPE::UpdateHatching();
    movingShape->SetFlags( IS_MOVING );
}
 
 
void SCH_SHAPE::Move( const VECTOR2I& aOffset )
{
    move( aOffset );
}
 
 
void SCH_SHAPE::Normalize()
{
    if( GetShape() == SHAPE_T::RECTANGLE )
    {
        VECTOR2I size = GetEnd() - GetPosition();
 
        if( size.y < 0 )
        {
            SetStartY( GetStartY() + size.y );
            SetEndY( GetStartY() - size.y );
        }
 
        if( size.x < 0 )
        {
            SetStartX( GetStartX() + size.x );
            SetEndX( GetStartX() - size.x );
        }
    }
}
 
 
void SCH_SHAPE::MirrorHorizontally( int aCenter )
{
    flip( VECTOR2I( aCenter, 0 ), FLIP_DIRECTION::LEFT_RIGHT );
}
 
 
void SCH_SHAPE::MirrorVertically( int aCenter )
{
    flip( VECTOR2I( 0, aCenter ), FLIP_DIRECTION::TOP_BOTTOM );
}
 
 
void SCH_SHAPE::Rotate( const VECTOR2I& aCenter, bool aRotateCCW )
{
    rotate( aCenter, aRotateCCW ? ANGLE_90 : ANGLE_270 );
}
 
 
bool SCH_SHAPE::HitTest( const VECTOR2I& aPosition, int aAccuracy ) const
{
    return hitTest( aPosition, aAccuracy );
}
 
 
bool SCH_SHAPE::HitTest( const BOX2I& aRect, bool aContained, int aAccuracy ) const
{
    if( m_flags & (STRUCT_DELETED | SKIP_STRUCT ) )
        return false;
 
    return hitTest( aRect, aContained, aAccuracy );
}
 
 
bool SCH_SHAPE::HitTest( const SHAPE_LINE_CHAIN& aPoly, bool aContained ) const
{
    if( m_flags & (STRUCT_DELETED | SKIP_STRUCT ) )
        return false;
 
    std::vector<SHAPE*> shapes = MakeEffectiveShapes( false );
 
    for( SHAPE* shape : shapes )
    {
        bool hit = KIGEOM::ShapeHitTest( aPoly, *shape, aContained );
 
        if( hit )
        {
            for( SHAPE* s : shapes )
                delete s;
            return true;
        }
    }
 
    for( SHAPE* shape : shapes )
        delete shape;
 
    return false;
}
 
 
bool SCH_SHAPE::IsEndPoint( const VECTOR2I& aPt ) const
{
    SHAPE_T shape = GetShape();
 
    if( shape == SHAPE_T::ARC || shape == SHAPE_T::BEZIER || shape == SHAPE_T::SEGMENT )
        return ( aPt == GetStart() ) || ( aPt == GetEnd() );
 
    if( shape == SHAPE_T::RECTANGLE )
    {
        for( const VECTOR2I& corner : GetRectCorners() )
        {
            if( corner == aPt )
                return true;
        }
 
        return false;
    }
 
    if( shape == SHAPE_T::POLY )
    {
        for( const VECTOR2I& pt : GetPolyPoints() )
        {
            if( pt == aPt )
                return true;
        }
 
        return false;
    }
 
    return false;
}
 
 
void SCH_SHAPE::Plot( PLOTTER* aPlotter, bool aBackground, const SCH_PLOT_OPTS& aPlotOpts,
                      int aUnit, int aBodyStyle, const VECTOR2I& aOffset, bool aDimmed )
{
    if( IsPrivate() )
        return;
 
    // note: if aBodyStyle == -1 the outline shape is not plotted. Only the filled area
    // is plotted (used to plot cells for SCH_TABLE items
 
    SCH_RENDER_SETTINGS* renderSettings = getRenderSettings( aPlotter );
    int                  pen_size = GetEffectivePenWidth( renderSettings );
 
    static std::vector<VECTOR2I> ptList;
 
    if( GetShape() == SHAPE_T::POLY )
    {
        ptList.clear();
 
        if( !GetPolyShape().IsEmpty() )
        {
            for( const VECTOR2I& pt : GetPolyShape().Outline( 0 ).CPoints() )
                ptList.push_back( renderSettings->TransformCoordinate( pt ) + aOffset );
        }
    }
    else if( GetShape() == SHAPE_T::BEZIER )
    {
        ptList.clear();
 
        for( const VECTOR2I& pt : m_bezierPoints )
            ptList.push_back( renderSettings->TransformCoordinate( pt ) + aOffset );
    }
    else if( GetShape() == SHAPE_T::ELLIPSE || GetShape() == SHAPE_T::ELLIPSE_ARC )
    {
        ptList.clear();
 
        SHAPE_ELLIPSE e = buildShapeEllipse();
 
        SHAPE_LINE_CHAIN chain = e.ConvertToPolyline( getMaxError() );
 
        for( int ii = 0; ii < chain.PointCount(); ++ii )
            ptList.push_back( renderSettings->TransformCoordinate( chain.CPoint( ii ) ) + aOffset );
    }
 
    COLOR4D    color = GetStroke().GetColor();
    COLOR4D    bg = renderSettings->GetBackgroundColor();
    LINE_STYLE lineStyle = GetStroke().GetLineStyle();
    FILL_T     fill = m_fill;
 
    if( aBackground )
    {
        switch( m_fill )
        {
        case FILL_T::FILLED_SHAPE:
            // Fill in the foreground layer
            return;
 
        case FILL_T::HATCH:
        case FILL_T::REVERSE_HATCH:
        case FILL_T::CROSS_HATCH:
            if( !aPlotter->GetColorMode() || color == COLOR4D::UNSPECIFIED )
                color = renderSettings->GetLayerColor( m_layer );
 
            color.a = color.a * 0.4;
            break;
 
        case FILL_T::FILLED_WITH_COLOR:
            // drop separate fills in B&W mode
            if( !aPlotter->GetColorMode() && pen_size > 0 )
                return;
 
            color = GetFillColor();
 
            if( color == COLOR4D::UNSPECIFIED )
                color = renderSettings->GetLayerColor( m_layer );
 
            break;
 
        case FILL_T::FILLED_WITH_BG_BODYCOLOR:
            // drop fill in B&W mode
            if( !aPlotter->GetColorMode() )
                return;
 
            color = renderSettings->GetLayerColor( LAYER_DEVICE_BACKGROUND );
            break;
 
        default:
            return;
        }
 
        pen_size = 0;
        lineStyle = LINE_STYLE::SOLID;
    }
    else /* if( aForeground ) */
    {
        if( !aPlotter->GetColorMode() || color == COLOR4D::UNSPECIFIED )
            color = renderSettings->GetLayerColor( m_layer );
 
        if( lineStyle == LINE_STYLE::DEFAULT )
            lineStyle = LINE_STYLE::SOLID;
 
        if( m_fill == FILL_T::FILLED_SHAPE )
            fill = m_fill;
        else
            fill = FILL_T::NO_FILL;
 
        pen_size = aBodyStyle == -1 ? 0 : GetEffectivePenWidth( renderSettings );
    }
 
    if( bg == COLOR4D::UNSPECIFIED || !aPlotter->GetColorMode() )
        bg = COLOR4D::WHITE;
 
    if( color.m_text && Schematic() )
        color = COLOR4D( ResolveText( *color.m_text, &Schematic()->CurrentSheet() ) );
 
    if( aDimmed )
    {
        color.Desaturate( );
        color = color.Mix( bg, 0.5f );
    }
 
    aPlotter->SetColor( color );
 
    if( aBackground && IsHatchedFill() )
    {
        for( int ii = 0; ii < GetHatching().OutlineCount(); ++ii )
        {
            SHAPE_LINE_CHAIN outline = GetHatching().COutline( ii );
 
            for( int jj = 0; jj < outline.PointCount(); ++jj )
                outline.SetPoint( jj, renderSettings->TransformCoordinate( outline.CPoint( jj ) ) + aOffset );
 
            aPlotter->PlotPoly( outline, FILL_T::FILLED_SHAPE, 0, nullptr );
        }
 
        return;
    }
 
    aPlotter->SetCurrentLineWidth( pen_size );
    aPlotter->SetDash( pen_size, lineStyle );
 
    VECTOR2I start = renderSettings->TransformCoordinate( m_start ) + aOffset;
    VECTOR2I end = renderSettings->TransformCoordinate( m_end ) + aOffset;
    VECTOR2I mid, center;
 
    auto transformBezierPoint =
            [&]( const VECTOR2D& aPoint )
            {
                return renderSettings->TransformCoordinate( VECTOR2I( aPoint ) ) + aOffset;
            };
 
    std::vector<VECTOR2I> lineEndingPlotPoints = ptList;
 
    switch( GetShape() )
    {
    case SHAPE_T::ARC:
    {
        mid = renderSettings->TransformCoordinate( GetArcMid() ) + aOffset;
 
        // Save original endpoints before shortening.
        VECTOR2I origArcStart = start;
        VECTOR2I origArcEnd = end;
 
        if( GetStartEnding().GetStyle() != LINE_ENDING_STYLE::NONE
            || GetEndEnding().GetStyle() != LINE_ENDING_STYLE::NONE )
        {
            SHAPE_ARC arc( start, mid, end, 0 );
            VECTOR2I  c = arc.GetCenter();
            EDA_ANGLE startAngle = arc.GetStartAngle();
            EDA_ANGLE arcAngle = arc.GetCentralAngle();
 
            // Determine arc direction from start/mid/end.
            EDA_ANGLE origStart = startAngle;
            if( ShortenArcForEndings( startAngle, arcAngle, arc.GetRadius(), pen_size ) )
            {
                RotatePoint( start, c, origStart - startAngle );
 
                VECTOR2I newEnd = start;
                RotatePoint( newEnd, c, -arcAngle );
 
                VECTOR2I newMid = start;
                RotatePoint( newMid, c, -arcAngle / 2 );
 
                aPlotter->Arc( start, newMid, newEnd, fill, pen_size );
            }
        }
        else
        {
            aPlotter->Arc( start, mid, end, fill, pen_size );
        }
 
        // Restore original endpoints for ending placement.
        start = origArcStart;
        end = origArcEnd;
 
        break;
    }
 
    case SHAPE_T::CIRCLE:
        center = renderSettings->TransformCoordinate( getCenter() ) + aOffset;
        aPlotter->Circle( center, GetRadius() * 2, fill, pen_size );
        break;
 
    case SHAPE_T::RECTANGLE:
        aPlotter->Rect( start, end, fill, pen_size, GetCornerRadius() );
        break;
 
    case SHAPE_T::SEGMENT:
        aPlotter->ThickSegment( start, end, pen_size, nullptr );
        break;
 
    case SHAPE_T::POLY:
        if( !ShortenBodyPolyPoints( ptList, IsClosed(), 0, pen_size ) )
            break;
 
        aPlotter->PlotPoly( ptList, fill, pen_size, nullptr );
        break;
 
    case SHAPE_T::BEZIER:
    {
        std::optional<BEZIER<double>> curve = ShortenedBezierCurve( pen_size );
 
        if( curve && aPlotter->GetPlotterType() == PLOT_FORMAT::SVG )
        {
            aPlotter->BezierCurve( transformBezierPoint( curve->Start ), transformBezierPoint( curve->C1 ),
                                   transformBezierPoint( curve->C2 ), transformBezierPoint( curve->End ),
                                   GetMaxError(), pen_size );
        }
        else if( curve )
        {
            std::vector<VECTOR2D> pts = ShortenedBezierPolyline( pen_size );
            std::vector<VECTOR2I> plotPts;
 
            plotPts.reserve( pts.size() );
 
            for( const VECTOR2D& pt : pts )
                plotPts.push_back( transformBezierPoint( pt ) );
 
            aPlotter->PlotPoly( plotPts, fill, pen_size, nullptr );
        }
 
        break;
    }
 
    case SHAPE_T::ELLIPSE:
        if( !ptList.empty() )
            ptList.push_back( ptList.front() );
 
        aPlotter->PlotPoly( ptList, fill, pen_size, nullptr );
        break;
 
    case SHAPE_T::ELLIPSE_ARC:
        aPlotter->PlotPoly( ptList, FILL_T::NO_FILL, pen_size, nullptr );
        break;
 
    default:
        UNIMPLEMENTED_FOR( SHAPE_T_asString() );
    }
 
    aPlotter->SetDash( pen_size, LINE_STYLE::SOLID );
 
    // Plot line endings for open shapes.
    if( !IsClosed()
        && ( GetStartEnding().GetStyle() != LINE_ENDING_STYLE::NONE
             || GetEndEnding().GetStyle() != LINE_ENDING_STYLE::NONE ) )
    {
        VECTOR2I startPt, endPt;
 
        if( !GetLineEndingEndpoints( startPt, endPt ) )
            return;
 
        startPt = renderSettings->TransformCoordinate( startPt ) + aOffset;
        endPt = renderSettings->TransformCoordinate( endPt ) + aOffset;
 
        EDA_SHAPE endingShape( *this );
 
        switch( GetShape() )
        {
        case SHAPE_T::ARC:
            endingShape.SetArcGeometry( startPt, mid, endPt );
            break;
 
        case SHAPE_T::POLY:
            if( lineEndingPlotPoints.size() >= 2 )
            {
                SHAPE_POLY_SET plotPoly;
                plotPoly.NewOutline();
 
                for( const VECTOR2I& pt : lineEndingPlotPoints )
                    plotPoly.Append( pt );
 
                if( GetPolyShape().OutlineCount() > 0 )
                    plotPoly.Outline( 0 ).SetClosed( GetPolyShape().COutline( 0 ).IsClosed() );
 
                endingShape.SetPolyShape( plotPoly );
            }
 
            break;
 
        case SHAPE_T::BEZIER:
            endingShape.SetStart( startPt );
            endingShape.SetBezierC1( transformBezierPoint( GetBezierC1() ) );
            endingShape.SetBezierC2( transformBezierPoint( GetBezierC2() ) );
            endingShape.SetEnd( endPt );
            endingShape.RebuildBezierToSegmentsPointsList( getMaxError() );
            break;
 
        case SHAPE_T::SEGMENT:
            endingShape.SetStart( startPt );
            endingShape.SetEnd( endPt );
            break;
 
        default: break;
        }
 
        EDA_ANGLE startTangent;
        EDA_ANGLE endTangent;
 
        endingShape.GetEndingTangents( startTangent, endTangent, pen_size );
        GetStartEnding().Plot( aPlotter, startPt, startTangent, pen_size );
        GetEndEnding().Plot( aPlotter, endPt, endTangent, pen_size );
    }
}
 
 
int SCH_SHAPE::GetEffectiveWidth() const
{
    if( GetPenWidth() > 0 )
        return GetPenWidth();
 
    // Historically 0 meant "default width" and negative numbers meant "don't stroke".
    if( GetPenWidth() < 0 )
        return 0;
 
    SCHEMATIC* schematic = Schematic();
 
    if( schematic )
        return schematic->Settings().m_DefaultLineWidth;
 
    return schIUScale.MilsToIU( DEFAULT_LINE_WIDTH_MILS );
}
 
 
const BOX2I SCH_SHAPE::GetBoundingBox() const
{
    return getBoundingBox();
}
 
 
void SCH_SHAPE::GetMsgPanelInfo( EDA_DRAW_FRAME* aFrame, std::vector<MSG_PANEL_ITEM>& aList )
{
    SCH_ITEM::GetMsgPanelInfo( aFrame, aList );
 
    ShapeGetMsgPanelInfo( aFrame, aList );
}
 
 
wxString SCH_SHAPE::GetItemDescription( UNITS_PROVIDER* aUnitsProvider, bool aFull ) const
{
    switch( GetShape() )
    {
    case SHAPE_T::ARC:
        return wxString::Format( _( "Arc, radius %s" ),
                                 aUnitsProvider->MessageTextFromValue( GetRadius() ) );
 
    case SHAPE_T::CIRCLE:
        return wxString::Format( _( "Circle, radius %s" ),
                                 aUnitsProvider->MessageTextFromValue( GetRadius() ) );
 
    case SHAPE_T::RECTANGLE:
        return wxString::Format( _( "Rectangle, width %s height %s" ),
                                 aUnitsProvider->MessageTextFromValue( std::abs( m_start.x - m_end.x ) ),
                                 aUnitsProvider->MessageTextFromValue( std::abs( m_start.y - m_end.y ) ) );
 
    case SHAPE_T::SEGMENT:
        return wxString::Format( _( "Line, length %s" ),
                                 aUnitsProvider->MessageTextFromValue( ( m_start - m_end ).EuclideanNorm() ) );
 
    case SHAPE_T::POLY:
        return wxString::Format( _( "Polyline, %d points" ),
                                 int( GetPolyShape().IsEmpty() ? 0 : GetPolyShape().Outline( 0 ).GetPointCount() ) );
 
    case SHAPE_T::BEZIER:
        return wxString::Format( _( "Bezier Curve, %d points" ),
                                 int( m_bezierPoints.size() ) );
 
    case SHAPE_T::ELLIPSE:
        return wxString::Format( _( "Ellipse, %s x %s" ),
                                 aUnitsProvider->MessageTextFromValue( GetEllipseMajorRadius() ),
                                 aUnitsProvider->MessageTextFromValue( GetEllipseMinorRadius() ) );
 
    case SHAPE_T::ELLIPSE_ARC:
        return wxString::Format( _( "Elliptical Arc, %s x %s" ),
                                 aUnitsProvider->MessageTextFromValue( GetEllipseMajorRadius() ),
                                 aUnitsProvider->MessageTextFromValue( GetEllipseMinorRadius() ) );
 
    default:
        UNIMPLEMENTED_FOR( SHAPE_T_asString() );
        return wxEmptyString;
    }
}
 
 
BITMAPS SCH_SHAPE::GetMenuImage() const
{
    switch( GetShape() )
    {
    case SHAPE_T::SEGMENT:     return BITMAPS::add_line;
    case SHAPE_T::ARC:         return BITMAPS::add_arc;
    case SHAPE_T::CIRCLE:      return BITMAPS::add_circle;
    case SHAPE_T::RECTANGLE:   return BITMAPS::add_rectangle;
    case SHAPE_T::POLY:        return BITMAPS::add_graphical_segments;
    case SHAPE_T::BEZIER:      return BITMAPS::add_bezier;
    case SHAPE_T::ELLIPSE:     return BITMAPS::add_ellipse;
    case SHAPE_T::ELLIPSE_ARC: return BITMAPS::add_ellipse_arc;
 
    default:
        UNIMPLEMENTED_FOR( SHAPE_T_asString() );
        return BITMAPS::question_mark;
    }
}
 
 
std::vector<int> SCH_SHAPE::ViewGetLayers() const
{
    std::vector<int> layers( 3 );
 
    layers[0] = IsPrivate() ? LAYER_PRIVATE_NOTES : m_layer;
 
    if( m_layer == LAYER_DEVICE )
    {
        if( m_fill == FILL_T::FILLED_WITH_BG_BODYCOLOR )
            layers[1] = LAYER_DEVICE_BACKGROUND;
        else
            layers[1] = LAYER_SHAPES_BACKGROUND;
    }
    else
    {
        layers[1] = LAYER_SHAPES_BACKGROUND;
    }
 
    layers[2] = LAYER_SELECTION_SHADOWS;
 
    return layers;
}
 
 
void SCH_SHAPE::AddPoint( const VECTOR2I& aPosition )
{
    if( GetShape() == SHAPE_T::POLY )
    {
        if( GetPolyShape().IsEmpty() )
        {
            GetPolyShape().NewOutline();
            GetPolyShape().Outline( 0 ).SetClosed( false );
        }
 
        GetPolyShape().Outline( 0 ).Append( aPosition, true );
    }
    else
    {
        UNIMPLEMENTED_FOR( SHAPE_T_asString() );
    }
}
 
 
bool SCH_SHAPE::operator==( const SCH_ITEM& aOther ) const
{
    if( aOther.Type() != Type() )
        return false;
 
    const SCH_SHAPE& other = static_cast<const SCH_SHAPE&>( aOther );
 
    return SCH_ITEM::operator==( aOther ) && EDA_SHAPE::operator==( other );
}
 
 
double SCH_SHAPE::Similarity( const SCH_ITEM& aOther ) const
{
    if( m_Uuid == aOther.m_Uuid )
        return 1.0;
 
    if( aOther.Type() != Type() )
        return 0.0;
 
    const SCH_SHAPE& other = static_cast<const SCH_SHAPE&>( aOther );
 
    double similarity = SimilarityBase( other );
 
    similarity *= EDA_SHAPE::Similarity( other );
 
    return similarity;
}
 
 
int SCH_SHAPE::compare( const SCH_ITEM& aOther, int aCompareFlags ) const
{
    // The object UUIDs must be compared after the shape coordinates because shapes do not
    // have immutable UUIDs.
    int retv = SCH_ITEM::compare( aOther, aCompareFlags & ~COMPARE_FLAGS::UUID );
 
    if( retv )
        return retv;
 
    retv = EDA_SHAPE::Compare( &static_cast<const SCH_SHAPE&>( aOther ) );
 
    if( retv )
        return retv;
 
    if( aCompareFlags & COMPARE_FLAGS::UUID )
    {
        if( m_Uuid < aOther.m_Uuid )
            return -1;
 
        if( m_Uuid > aOther.m_Uuid )
            return 1;
    }
 
    return 0;
}
 
 
static struct SCH_SHAPE_DESC
{
    SCH_SHAPE_DESC()
    {
        ENUM_MAP<FILL_T>& fillEnum = ENUM_MAP<FILL_T>::Instance();
 
        if( fillEnum.Choices().GetCount() == 0 )
        {
            fillEnum.Map( FILL_T::NO_FILL, _HKI( "None" ) )
                    .Map( FILL_T::FILLED_SHAPE, _HKI( "Body outline color" ) )
                    .Map( FILL_T::FILLED_WITH_BG_BODYCOLOR, _HKI( "Body background color" ) )
                    .Map( FILL_T::FILLED_WITH_COLOR, _HKI( "Fill color" ) )
                    .Map( FILL_T::HATCH, _HKI( "Hatch" ) )
                    .Map( FILL_T::REVERSE_HATCH, _HKI( "Reverse hatch" ) )
                    .Map( FILL_T::CROSS_HATCH, _HKI( "Cross hatch" ) );
        }
 
        PROPERTY_MANAGER& propMgr = PROPERTY_MANAGER::Instance();
        REGISTER_TYPE( SCH_SHAPE );
        propMgr.AddTypeCast( new TYPE_CAST<SCH_SHAPE, SCH_ITEM> );
        propMgr.AddTypeCast( new TYPE_CAST<SCH_SHAPE, EDA_SHAPE> );
        propMgr.InheritsAfter( TYPE_HASH( SCH_SHAPE ), TYPE_HASH( SCH_ITEM ) );
        propMgr.InheritsAfter( TYPE_HASH( SCH_SHAPE ), TYPE_HASH( EDA_SHAPE ) );
 
        // Polygons and ellipses have meaningful Position properties (first vertex / center).
        // On other shapes, Position duplicates the Start properties.
        auto isPolygonOrEllipse =
                []( INSPECTABLE* aItem ) -> bool
                {
                    if( SCH_SHAPE* shape = dynamic_cast<SCH_SHAPE*>( aItem ) )
                    {
                        const SHAPE_T t = shape->GetShape();
                        return t == SHAPE_T::POLY || t == SHAPE_T::ELLIPSE || t == SHAPE_T::ELLIPSE_ARC;
                    }
                    return false;
                };
 
        // Hide Start/End for shapes that don't use them directly
        // (polygon uses first vertex via Position; circle uses Center; ellipse uses Center + radii).
        auto isNotPolygonOrCircleOrEllipse =
                []( INSPECTABLE* aItem ) -> bool
                {
                    if( SCH_SHAPE* shape = dynamic_cast<SCH_SHAPE*>( aItem ) )
                    {
                        const SHAPE_T t = shape->GetShape();
                        return t != SHAPE_T::POLY
                                && t != SHAPE_T::CIRCLE
                                && t != SHAPE_T::ELLIPSE 
                                && t != SHAPE_T::ELLIPSE_ARC;
                    }
                    return true;
                };
 
        auto isSymbolItem =
                []( INSPECTABLE* aItem ) -> bool
                {
                    if( SCH_SHAPE* shape = dynamic_cast<SCH_SHAPE*>( aItem ) )
                        return shape->GetLayer() == LAYER_DEVICE;
 
                    return false;
                };
 
        auto isSchematicItem =
                []( INSPECTABLE* aItem ) -> bool
                {
                    if( SCH_SHAPE* shape = dynamic_cast<SCH_SHAPE*>( aItem ) )
                        return shape->GetLayer() != LAYER_DEVICE;
 
                    return false;
                };
 
        auto isFillColorEditable =
                []( INSPECTABLE* aItem ) -> bool
                {
                    if( SCH_SHAPE* shape = dynamic_cast<SCH_SHAPE*>( aItem ) )
                    {
                        if( shape->GetParentSymbol() )
                            return shape->GetFillMode() == FILL_T::FILLED_WITH_COLOR;
                        else
                            return shape->IsSolidFill();
                    }
 
                    return true;
                };
 
        const wxString shapeProps = _HKI( "Shape Properties" );
 
        propMgr.AddProperty( new PROPERTY<SCH_SHAPE, int>( _HKI( "Position X" ),
                    &SCH_SHAPE::SetPositionX, &SCH_SHAPE::GetPositionX, PROPERTY_DISPLAY::PT_COORD,
                    ORIGIN_TRANSFORMS::ABS_X_COORD ),
                    shapeProps )
                .SetAvailableFunc( isPolygonOrEllipse );
 
        propMgr.AddProperty( new PROPERTY<SCH_SHAPE, int>( _HKI( "Position Y" ),
                    &SCH_SHAPE::SetPositionY, &SCH_SHAPE::GetPositionY, PROPERTY_DISPLAY::PT_COORD,
                    ORIGIN_TRANSFORMS::ABS_Y_COORD ),
                    shapeProps )
                .SetAvailableFunc( isPolygonOrEllipse );
 
        propMgr.OverrideAvailability( TYPE_HASH( SCH_SHAPE ), TYPE_HASH( EDA_SHAPE ), _HKI( "Start X" ),
                                      isNotPolygonOrCircleOrEllipse );
        propMgr.OverrideAvailability( TYPE_HASH( SCH_SHAPE ), TYPE_HASH( EDA_SHAPE ), _HKI( "Start Y" ),
                                      isNotPolygonOrCircleOrEllipse );
        propMgr.OverrideAvailability( TYPE_HASH( SCH_SHAPE ), TYPE_HASH( EDA_SHAPE ), _HKI( "End X" ),
                                      isNotPolygonOrCircleOrEllipse );
        propMgr.OverrideAvailability( TYPE_HASH( SCH_SHAPE ), TYPE_HASH( EDA_SHAPE ), _HKI( "End Y" ),
                                      isNotPolygonOrCircleOrEllipse );
 
        propMgr.OverrideAvailability( TYPE_HASH( SCH_SHAPE ), TYPE_HASH( EDA_SHAPE ), _HKI( "Filled" ),
                                      isSchematicItem );
 
        propMgr.OverrideWriteability( TYPE_HASH( SCH_SHAPE ), TYPE_HASH( EDA_SHAPE ), _HKI( "Fill Color" ),
                                      isFillColorEditable );
 
        void ( SCH_SHAPE::*fillModeSetter )( FILL_T ) = &SCH_SHAPE::SetFillMode;
        FILL_T ( SCH_SHAPE::*fillModeGetter )() const = &SCH_SHAPE::GetFillMode;
 
        propMgr.AddProperty( new PROPERTY_ENUM<SCH_SHAPE, FILL_T>( _HKI( "Fill Mode" ),
                    fillModeSetter, fillModeGetter ),
                    _HKI( "Shape Properties" ) )
                .SetAvailableFunc( isSymbolItem );
    }
} _SCH_SHAPE_DESC;
 
ENUM_TO_WXANY( FILL_T );