/* Rectangle
 * <Description>
 * Creates a Rectangle object
 * <Usage>
 * javac Rectangle.java StadDraw.java
 *
 * API:
 * class Rectangle
 * public Rectangle(double x0, double y0, double w, double h)
 * public double area()
 * public double perimeter()
 * public boolean intersects(Rectangle b)
 * public void show(Rectangle b)
 * 
 * <References>
 * http://introcs.cs.princeton.edu/java/stdlib/
 * UAB CIS201L-2014 Summer Dr. Sloan
 * @author
 * Dan Latham
 * <l3li3l@torguard.tg>
 * @version 0.0.1
 * 
 */
 
public class Rectangle
{
	private final double x;
	private final double y;
	private final double width;
	private final double height;

	public Rectangle(double x0, double y0, double w, double h)
	{
		x = x0;
		y = y0;
		width = w;
		height = h;
	}
	public double area()
	{
		return (double) width * height;
	}
	public double perimeter()
	{
		return (double) 2*width + 2*height;
	}
	public boolean intersects(Rectangle b)
	{
		//check if x and y points are the same
		if (x == b.x && y == b.y)
		{
			if (width == b.width || height == b.height) return true;
			else if (width > b.width && height < b.height) return true;
			else if (width < b.width && height > b.height) return true;
		}
		//check if rightside of rect.a.x goes past rect.b.x or at rect.b.x
		else if (x <= b.x) if (x+(width/2) >= b.x-(width/2)) return true;
		//opposite
		else if (x > b.x) if (b.x+(width/2) >= x-(width/2)) return true;
		//check if top of a.y goes past b.y
		else if (y <= b.y) if (y+(height/2) >= b.y-(height/2)) return true;
		//opposite
		else if (y > b.y) if (b.y+(height/2) >= y-(height/2)) return true;
		return false; //base
	}
	public void show(Rectangle b)
	{
		StdDraw.setPenRadius();
		StdDraw.setPenColor(StdDraw.BOOK_BLUE);
		StdDraw.rectangle(b.x,b.y,b.width/2,b.height/2);
		StdDraw.show(1);
	}
}