Customize the styling of military symbols

class MyMilitarySymbolPainter : public IFeaturePainter {
public:
  MyMilitarySymbolPainter()
      // Regular symbols are painted with a default style, while selected symbols are painted with a surrounding rectangle.
      : _defaultStyle(MilitarySymbolStyle::newBuilder().build()), _selectedStyle(_defaultStyle->asBuilder().surroundingRectangleEnabled(true).build()) {
  }

  void configureMetadata(FeaturePainterMetadata& /*metadata*/) const override {
  }

  void paint(const Feature& feature, const FeaturePainterContext& context, FeatureCanvas& canvas) const override {
    // Retrieve the geometry from the feature
    auto geometry = feature.findGeometry();
    if (!geometry) {
      std::cerr << "Ignoring feature '" << feature.getId() << "'. It has no geometry." << std::endl;
      return;
    }

    // Transform the feature to a military symbol.
    auto symbol = MilitarySymbol::create(feature);

    // Use a MilitarySymbologyCanvas to submit a draw command for the military symbol.
    // The submitted symbol style depends on whether the feature is currently selected or not.
    MilitarySymbologyCanvas(context, canvas)
        .drawMilitarySymbol()
        .symbol(symbol)
        .geometry(geometry)
        .style(context.isFeatureStateEnabled(FeatureState::selected()) ? _selectedStyle : _defaultStyle)
        .submit();

    // Paint the symbol code as an additional label, with a fixed offset below the symbol.
    RelativePosition labelPosition{0, HorizontalAlignment::Center, VerticalAlignment::Top, 0, _defaultStyle->getIconSize() + 50.0};
    canvas.drawText().text(symbol->getCode()).position(labelPosition).anchor(geometry).submit();
  }

private:
  std::shared_ptr<MilitarySymbolStyle> _defaultStyle;
  std::shared_ptr<MilitarySymbolStyle> _selectedStyle;
};

public class MyMilitarySymbolPainter : IFeaturePainter
{
    private readonly MilitarySymbolStyle _defaultStyle;
    private readonly MilitarySymbolStyle _selectedStyle;

    public MyMilitarySymbolPainter()
    {
        // Regular symbols are painted with a default style, while selected symbols are painted with a surrounding rectangle.
        _defaultStyle = MilitarySymbolStyle.NewBuilder().Build();
        _selectedStyle = _defaultStyle.AsBuilder().SurroundingRectangleEnabled(true).Build();
    }


    public void ConfigureMetadata(FeaturePainterMetadata metadata)
    {
    }

    public void Paint(Feature feature, FeaturePainterContext context, FeatureCanvas canvas)
    {
        // Retrieve the geometry from the feature
        var geometry = feature.FindGeometry();
        if (geometry == null)
        {
            Console.Error.WriteLine("Ignoring feature '" + feature.Id + "'. It has no geometry.");
            return;
        }

        // Transform the feature to a military symbol.
        var symbol = MilitarySymbol.Create(feature);

        // Use a MilitarySymbologyCanvas to submit a draw command for the military symbol.
        // The submitted symbol style depends on whether the feature is currently selected or not.
        new MilitarySymbologyCanvas(context, canvas)
            .DrawMilitarySymbol()
            .Symbol(symbol)
            .Geometry(geometry)
            .Style(context.IsFeatureStateEnabled(FeatureState.Selected) ? _selectedStyle : _defaultStyle)
            .Submit();

        // Paint the symbol code as an additional label, with a fixed offset below the symbol.
        var labelPosition = new RelativePosition(0, HorizontalAlignment.Center, VerticalAlignment.Top, 0, _defaultStyle.IconSize + 50.0);
        canvas.DrawText().Text(symbol.Code).Position(labelPosition).Anchor(geometry).Submit();
    }
}

public static class MyMilitarySymbolPainter implements IFeaturePainter {
  private final MilitarySymbolStyle _defaultStyle;
  private final MilitarySymbolStyle _selectedStyle;

  public MyMilitarySymbolPainter() {
    // Regular symbols are painted with a default style, while selected symbols are painted with a surrounding rectangle.
    _defaultStyle = MilitarySymbolStyle.newBuilder().build();
    _selectedStyle = _defaultStyle.asBuilder().surroundingRectangleEnabled(true).build();
  }

  @Override
  public void configureMetadata(FeaturePainterMetadata metadata) {
  }

  @Override
  public void paint(Feature feature, FeaturePainterContext context, FeatureCanvas canvas) {
    // Retrieve the geometry from the feature
    Geometry geometry = feature.findGeometry();
    if (geometry == null) {
      Log.w("milsym", "Ignoring feature '" + feature.getId() + "'. It has no geometry.");
      return;
    }

    // Transform the feature to a military symbol.
    MilitarySymbol symbol = MilitarySymbol.create(feature);

    // Use a MilitarySymbologyCanvas to submit a draw command for the military symbol.
    // The submitted symbol style depends on whether the feature is currently selected or not.
    new MilitarySymbologyCanvas(context, canvas)
        .drawMilitarySymbol()
        .symbol(symbol)
        .geometry(geometry)
        .style(context.isFeatureStateEnabled(FeatureState.Selected) ? _selectedStyle : _defaultStyle)
        .submit();

    // Paint the symbol code as an additional label, with a fixed offset below the symbol.
    RelativePosition labelPosition = new RelativePosition(new Angle(0), HorizontalAlignment.Center, VerticalAlignment.Top, 0, _defaultStyle.getIconSize() + 50.0);
    canvas.drawText().text(symbol.getCode()).position(labelPosition).anchor(geometry).submit();
  }
}