Daniel Lawson Exercises 18-22 Rectangle Class

/**
 * Created by danie on 9/25/2016.
 */
//18-22 rectangle class
public class Rectangle {
    private int x;
    private int y;
    private int width;
    private int height;
    public Rectangle(int x, int y,int width,int height){
        this.x = x;
        this.y = y;
        if(width <0 || height <0)throw new IllegalArgumentException("The width and height must be positive");
        this.height = height;
        this.width = width;
    }
    public Rectangle(Point p, int width, int height){
        x = p.getX();
        x = p.getY();
        if(width <0 || height <0)throw new IllegalArgumentException("The width and height must be positive");
        this.height = height;
        this.width = width;
    }
    public int getHeight(){
        return height;
    }
    public int getWidth(){
        return width;
    }
    public int getX(){
        return x;
    }
    public int getY(){
        return y;
    }
    public boolean contains(int x, int y){
        return(x>=this.x && x <= this.x+width && y>=this.y && y <=this.y +height);
    }
    public boolean contains(Point p){
        return(p.getX()>=this.x && p.getX() <= this.x+width && p.getY()>=this.y && p.getY() <=this.y +height);
    }
    // I don't think the formula for the length/width of the union and intersections are correct
    public Rectangle union(Rectangle rect){
        return new Rectangle(Math.min(x,rect.getX()),Math.min(y,rect.getY()),Math.max(x+width,rect.getX()+rect.getWidth())- Math.max(x,rect.getX()),Math.max(y+height,rect.getY()+rect.getHeight())- Math.max(y,rect.getY()));
    }
    public Rectangle intersection(Rectangle rect){
        return new Rectangle(Math.max(y,rect.getY()),Math.max(x,rect.getX()),Math.min(x+width,rect.getX()+rect.getWidth())- Math.min(x,rect.getX()),Math.min(y+height,rect.getY()+rect.getHeight())- Math.min(y,rect.getY()));
    }

}