Ellipse

// Ellipse program that generates an oval shape with red and blue lines
// Renee Waggoner
// July 26, 2019
// Special Requirements: None
package ellipses;
import javax.swing.JFrame;
import javax.swing.JPanel;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;

public class Ellipse extends JFrame {

    public Ellipse()
    {
        setContentPane(new DrawPane());
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setSize(400, 400);
        setVisible(true);
    }

    class DrawPane extends JPanel {
        public void paintComponent(Graphics g) {
            Dimension d = getSize();
            int w = d.width;
            // determine height of oval, larger numbers would shrink oval vertically
            int h = d.height/2;
            int x = 0, y = 0;

            // creating oval shape
            for (w = d.width; w >= 0; w--)
            {
                if (w%2 == 0)
                {
                    g.setColor(Color.blue);
                    // fill lines with blue
                    g.fillOval(x, y, w, h);
                    // this makes the blue portion evenly distributed
                    x +=5;
                    y +=5;
                    w -=10;
                    h -=10;
                } else {
                    g.setColor(Color.red);
                    // fill lines with red
                    g.fillOval(x, y, w, h);
                    // this makes the red portion evenly distributed inside the created oval shape
                    x +=5;
                    y +=5;
                    w -=10;
                    h -=10;
                }
            }
        }
    }

    public static void main(String args[]) {
        new Ellipse();
    }
}