import java.awt.*;
import java.awt.geom.*;

/**
 * A car shape.
 * Partially taken from the textbook (Cay S. Horstmann - OO Design & Patterns, 2nd ed.)
 */
public class CarShape implements CompositeShape {
    private final int x; // Base x-coordinate (relative to drawing origin)
    private final int y; // Base y-coordinate (relative to drawing origin)
    private final int width;

    public CarShape() {
        this(0, 0, 60); // Default position and width
    }

    /**
     * Constructs a car shape.
     *
     * @param x     the left of the bounding rectangle
     * @param y     the top of the bounding rectangle
     * @param width the width of the bounding rectangle
     */
    public CarShape(int x, int y, int width) {
        this.x = x;
        this.y = y;
        this.width = width;
    }

    @Override
    public int getWidth() {
        return width; // Width of the car body
    }

    @Override
    public int getHeight() {
        // Approximate height: body height + wheel radius
        return width / 2 + width / 6;
    }

    @Override
    public void draw(Graphics2D g2) {
        Rectangle2D.Double body = new Rectangle2D.Double(x, y + width / 6.0, width - 1, width / 6.0);
        Ellipse2D.Double frontTire = new Ellipse2D.Double(
                x + width / 6.0,
                y + width / 3.0,
                width / 6.0,
                width / 6.0
        );
        Ellipse2D.Double rearTire = new Ellipse2D.Double(
                x + width * 2 / 3.0,
                y + width / 3.0,
                width / 6.0,
                width / 6.0
        );

        // The bottom of the front windshield
        Point2D.Double r1 = new Point2D.Double(x + width / 6.0, y + width / 6.0);
        // The front of the roof
        Point2D.Double r2 = new Point2D.Double(x + width / 3.0, y);
        // The rear of the roof
        Point2D.Double r3 = new Point2D.Double(x + width * 2 / 3.0, y);
        // The bottom of the rear windshield
        Point2D.Double r4 = new Point2D.Double(x + width * 5 / 6.0, y + width / 6.0);
        Line2D.Double frontWindshield = new Line2D.Double(r1, r2);
        Line2D.Double roofTop = new Line2D.Double(r2, r3);
        Line2D.Double rearWindshield = new Line2D.Double(r3, r4);

        // Draw the parts
        g2.draw(body);
        g2.draw(frontTire);
        g2.draw(rearTire);
        g2.draw(frontWindshield);
        g2.draw(roofTop);
        g2.draw(rearWindshield);
    }
}