import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.text.*;


public class PolarCoords extends JFrame
{

    JFrame frameWin = new JFrame();
    frameWin.setBounds(100, 200, 120, 120);
    frameWin.setTitle("Polar Coordinates");
    frameWin.setVisible(true);
    frameWin.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

    private JLabel rLabel;
    private JLabel thetaLabel;
    private JLabel r2Label;
    private JLabel theta2Label;
    private JLabel answerLabel;

    private static String rString = "R Coordinate";
    private static String thetaString = "Theta";
    private static String r2String = "R2 Coordinate";
    private static String theta2String = "Theta2";
    private static String answerString = "Answer";

    private JFormattedTextField rField;
    private JFormattedTextField thetaField;
    private JFormattedTextField r2Field;
    private JFormattedTextField theta2Field;
    private JFormattedTextField answerField;

    public PolarCoords(double rCoord, double theta)
    {
        return;
    }

    /**
     * Returns theta in (r, theta)
     * @param tTheta
     * @return
     */
    public double tTheta(double theta)
    {
        return theta;
    }

    /**
     * Returns r coordinate in (r, theta)
     * @param rCoord
     * @return
     */
    public double rRCoord(double rCoord)
    {
        return rCoord;
    }

    public Object magnitude()
    {
        double r1 = Double.valueOf(rField.getText());
        double theta1 = Double.valueOf(thetaField.getText());
        double r2 = 0;
        double theta2 = 0;
        double distance = Math.sqrt(Math.pow(r1, 2)) + Math.sqrt(Math.pow(r2, 2) - 2*(r1*r2) * Math.cos(theta1 - theta2));
        return distance;
    }

    public Double angleFromOrigin()
    {
        double theta1 = Double.valueOf(thetaField.getText());
        double theta2 = Double.valueOf(theta2Field.getText());
        double answer = theta2 - theta;
        return answer;
    }

    public Object distanceFromPoint()
    {
        // Distance formula Ã(r1)^2 + (r2)^2 - 2(r1)(r2) cos ( degree1 - degree2 )
        double r1 = Double.valueOf(rField.getText());
        double theta1 = Double.valueOf(thetaField.getText());
        double r2 = Double.valueOf(r2Field.getText());
        double theta2 = Double.valueOf(theta2Field.getText());
        double distance = Math.sqrt(Math.pow(r1, 2)) + Math.sqrt(Math.pow(r2, 2) - 2*(r1*r2) * Math.cos(theta1 - theta2));
        return distance;
    }

    public PolarCoords addPoints()
    {
        double r1 = Double.valueOf(rField.getText());
        double theta1 = Double.valueOf(thetaField.getText());
        double r2 = Double.valueOf(r2Field.getText());
        double theta2 = Double.valueOf(theta2Field.getText());
        double x = r1 * Math.cos(theta1);
        double y = r1 * Math.sin(theta1);
        double x2 = r2 * Math.cos(theta1);
        double y2 = r2 * Math.sin(theta2);

        double xAnswer = x2 - x;
        double yAnswer = y2 - y;
        double answer = Math.atan2(xAnswer, yAnswer);
        PolarCoords polarAnswer = new PolarCoords(xAnswer, yAnswer);
        return polarAnswer;
    }

    public static void main(String[] args)
    {
        Frame f = new Frame();
        System.out.print("Visible = True");
    }


}

//JFrame frameWin = new JFrame();
    frameWin.setBounds(100, 200, 120, 120);
    frameWin.setTitle("Polar Coordinates");
    frameWin.setVisible(true);
    frameWin.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE) ;

setBounds(100, 200, 120, 120);
 setTitle("Polar Coordinates");
 setVisible(true);
 setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE) ;

public class PolarCoords extends JFrame
{
   public PolarCoords()
   {
     setBounds(100, 200, 120, 120);
     setTitle("Polar Coordinates");
     setVisible(true);
     setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE) ;
   }
}

public class PolarCoords extends JFrame
{
   public PolarCoords()
   {
     Init();
   }
   public void Init()
   {
     setBounds(100, 200, 120, 120);
     setTitle("Polar Coordinates");
     setVisible(true);
     setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE) ;
   }
}

public PolarCoords(double rCoord, double theta) //u'r not even using rCoord and theta
{
    this.setBounds(100, 200, 120, 120);
    this.setTitle("Polar Coordinates");
    this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    this.setVisible(true);
}