import java.awt.geom.Point2D;
import java.util.Scanner;

/**
 * Test program for CS 160, Lab 4.
 * 
 * @author John Paxton 
 * @version September 30, 2008
 */

public class UserInterface
{
    public static void main (String [] args)
    {
        Point2D.Double point1;  // first point of triangle
        Point2D.Double point2;  // second point of triangle
        Point2D.Double point3;  // third point of triangle
        
        Triangle triangle;      // triangle
        
        System.out.println("CS 160, Lab 4");
        System.out.println("-------------\n");
        
        point1 = getPoint();
        point2 = getPoint();
        point3 = getPoint();
        
        triangle = new Triangle(point1, point2, point3);
        
        System.out.println("The perimeter of the triangle = " + 
                triangle.getPerimeter());
        System.out.println("The area of the triangle = " + triangle.getArea());
               
    }
    
    /**
     * Prompts the user for the x,y coordinates of a point.
     * @return Point2D.Double, a point on a triangle
     */
    
    private static Point2D.Double getPoint()
    {
        double x;               // x coordinate of point
        double y;               // y coordinate of point
        Point2D.Double point;   // entire point
        Scanner in;             // user input source
        
        in = new Scanner (System.in);   
        
        System.out.println("Triangle Point Input");
        System.out.print("Enter x: ");
        x = in.nextDouble();
        System.out.print("Enter y: ");
        y = in.nextDouble();
        System.out.println("---------------");
        
        point = new Point2D.Double(x,y);
        
        return point;
    }
}