new-shapes/src/main/java/ovh/gasser/newshapes/shapes/SCircle.java

package ovh.gasser.newshapes.shapes;

import ovh.gasser.newshapes.ShapeVisitor;
import ovh.gasser.newshapes.attributes.ColorAttributes;
import ovh.gasser.newshapes.attributes.SelectionAttributes;

import java.awt.*;

public class SCircle extends AbstractShape {

    private int radius;

    private SCircle(int x, int y, int radius) {
        super(new Rectangle(x, y, radius * 2, radius * 2));
        this.radius = radius;
    }

    @Override
    public void accept(ShapeVisitor visitor) {
        visitor.visitCircle(this);
    }

    @Override
    public void resize(ResizeHandle handle, int dx, int dy) {
        int delta = Math.max(Math.abs(dx), Math.abs(dy));
        
        boolean shrink = switch (handle) {
            case E, SE, NE -> dx < 0;
            case W, SW, NW -> dx > 0;
            case N, S -> dy < 0;
            default -> false;
        };
        
        int sizeChange = shrink ? -delta : delta;
        int newWidth = bounds.width + sizeChange;
        int newHeight = bounds.height + sizeChange;
        
        if (newWidth < 2) newWidth = 2;
        if (newHeight < 2) newHeight = 2;
        
        bounds.setSize(newWidth, newHeight);
        this.radius = Math.max(bounds.width, bounds.height) / 2;
    }

    @Override
    public Shape clone() {
        var color = (ColorAttributes) getAttributes(ColorAttributes.ID);
        Color strokeColor = color != null ? color.strokedColor : Color.BLACK;
        return SCircle.create(super.getBounds().x, super.getBounds().y, this.radius, strokeColor);
    }

    public int getRadius() {
        return radius;
    }

    public static SCircle create(int x, int y, int radius) {
        return create(x, y, radius, Color.BLACK);
    }

    public static SCircle create(int x, int y, int radius, Color color) {
        var circle = new SCircle(x, y, radius);
        circle.addAttributes(new SelectionAttributes());
        circle.addAttributes(new ColorAttributes(false, true, Color.BLACK,  color));
        return circle;
    }
}