Agfdhyk

I'm trying to draw a trajectory for a "firework" launcher that I made, but I am running into a problem where my trajectory only repaints within the bounds of the initial window size. When I resize the window, everything repaints setting the bottom left corner to the origin, but my trajectory gets erased eventually. I have attached some images of what I mean. I think it might have to do with the for loop that my trajectory is painted with in my main() but I'm not sure how to fix that. Image examples attached. https://i.imgur.com/ymcSE7N.png

package splode;

import javax.swing.JComponent;

import javax.swing.JFrame;

import java.awt.Color;

import java.awt.Graphics;

public class Fuse extends JComponent {

    private static final long serialVersionUID = 1L;



    double x; 

    double y; 

    static JFrame frame = new JFrame("Fireworst");

    int key;



    public Fuse(int v, int a, double t, int key) {

        frame.setSize(1000, 548);

        this.x = v*Math.cos(Math.toRadians(a))*t;

        this.y = v*Math.sin(Math.toRadians(a))*t-.5*9.8*(Math.pow(t, 2));

        this.key = key;

    }



    public void paintComponent(Graphics g) {

        if (key == 0) {

            g.setColor(Color.RED);

            g.fillOval((int)x, frame.getHeight()-(int)y-50, 2, 2);

        }

        else if (key == 1) {

            for(int j=0; j<=340; j+=20) {

                g.setColor(Color.RED);

                g.fillArc((int)x-75, frame.getHeight()-(int)y-100, 150, 100, j+10, 3);

                g.fillArc((int)x-50, frame.getHeight()-(int) y-125, 100, 150, j, 3);

            }

        }

    }



    public static void main(String args) {

        for (double i=0; i<=25; i+=.1) {

            Fuse canvas = new Fuse(100, 45, i, 10);

            frame.add(canvas);

            frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

            frame.setVisible(true);

        }

        frame.setVisible(true);

        frame.getContentPane().setBackground( Color.BLACK );

        Fuse fuse = new Fuse(100, 45, 7, 2);

        frame.add(fuse);

        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        frame.setVisible(true);

        System.out.println(fuse.x);

        System.out.println(fuse.y);

    }

}