package horstmann.ch04_animation;
import java.awt.Graphics2D;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Line2D;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;

/**
   A car that can be moved around.
 */
public class CarShape implements MoveableShape
{
	/**
      Constructs a car item.
      @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;
	}

	public void translate(int dx, int dy)
	{
		x += dx;
		y += dy;
	}

	public void draw(Graphics2D g2)
	{
		Rectangle2D.Double body
		= new Rectangle2D.Double(x, y + width / 6,
				width - 1, width / 6);
		Ellipse2D.Double frontTire
		= new Ellipse2D.Double(x + width / 6, y + width / 3,
				width / 6, width / 6);
		Ellipse2D.Double rearTire
		= new Ellipse2D.Double(x + width * 2 / 3, y + width / 3,
				width / 6, width / 6);

		// The bottom of the front windshield
		Point2D.Double r1
		= new Point2D.Double(x + width / 6, y + width / 6);
		// The front of the roof
		Point2D.Double r2
		= new Point2D.Double(x + width / 3, y);
		// The rear of the roof
		Point2D.Double r3
		= new Point2D.Double(x + width * 2 / 3, y);
		// The bottom of the rear windshield
		Point2D.Double r4
		= new Point2D.Double(x + width * 5 / 6, y + width / 6);
		Line2D.Double frontWindshield
		= new Line2D.Double(r1, r2);
		Line2D.Double roofTop
		= new Line2D.Double(r2, r3);
		Line2D.Double rearWindshield
		= new Line2D.Double(r3, r4);

		g2.draw(body);
		g2.draw(frontTire);
		g2.draw(rearTire);
		g2.draw(frontWindshield);
		g2.draw(roofTop);
		g2.draw(rearWindshield);
	}

	private int x;
	private int y;
	private int width;
}