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;
}