Thread: How to draw a small square(handles) on the edge of a circle at each quadrant?

Hello, does anyone know how i can draw a small handle (square) on the edge of the circle at each quadrant( for e.g at the north,east,west and south quadrants) I used general path to draw the circle, now I'm having difficulties to draw the handles. Here is my code:

//class1
 
 
import javax.swing.*;
import java.awt.*;
import java.awt.geom.GeneralPath;
import java.awt.geom.PathIterator;
import java.awt.geom.Rectangle2D;
 
 
 
 
public class RoundShape {
 
 
	Point[] points;
    GeneralPath circle;
    final int INC = 5;
 
    public RoundShape(){
    	initPoints();
    	initCircle();
    }
 
 
 
    private void initPoints()
    {
        int numberOfPoints = 360/INC;
        points = new Point[numberOfPoints];
        double x = 175.0;
        double y = 175.0;
        double r = 50.0;
        int count = 0;
        for(int theta = 0; theta < 360; theta+=INC)
        {
            int xpt = (int)(x + r * Math.cos(Math.toRadians(theta)));
            int ypt = (int)(y + r * Math.sin(Math.toRadians(theta)));
            points[count++] = new Point(xpt, ypt);
        }
    }
 
    private void initCircle()
    {
        circle = new GeneralPath();
        for(int j = 0; j < points.length; j++)
        {
            if(j == 0)
                circle.moveTo(points[j].x, points[j].y);
            else
                circle.lineTo(points[j].x, points[j].y);
        }
        circle.closePath();
    }
 
	public void paintRound(Graphics2D g2d){
 
		Shape round=getroundShape();
		g2d.draw(round);
 
	}
 
 
 
 
 
 
 
	 private Shape getSPointRectangle(int x, int y) {
	        return new Rectangle2D.Double(x - 3, y - 3, 6, 6);
	    }
 
 
 
 
 
	public Shape getroundShape(){
		Shape s=circle;
		return s;
 
	}
 
 
 
 
 
}
 
//class2
 
import javax.swing.*;
import java.awt.*;
 
 
 
public class MainRound extends JPanel {
 
	RoundShape rs=new RoundShape();
 
	public MainRound(){
 
 
	}
 
	public void paintComponent(Graphics g){
 
		super.paintComponent(g);
        Graphics2D g2d = (Graphics2D)g;
        g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                            RenderingHints.VALUE_ANTIALIAS_ON);
 
        g2d.setPaint(Color.black);
        g2d.setStroke(new BasicStroke(15));
 
        rs.paintRound(g2d);
 
	}
 
 
	public static void main(String args[]){
 
		MainRound mr=new MainRound();
		JFrame frame=new JFrame();
		frame.setContentPane(mr);
		frame.setVisible(true);
		frame.setSize(300,300);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	}
 
}

Hello, i tried the +/- x and +/- y directions. I modified the code so that i can draw the circle on mouse click and i use mouse dragged so that i can drag it to any locations. But i when i run the codes, it draws itself on the top at 0,0 and i'm not able to drag it to other part of the screen. Here is my code

 
import javax.swing.*;
import java.awt.*;
import java.awt.geom.GeneralPath;
import java.awt.geom.PathIterator;
import java.awt.geom.Rectangle2D;
 
 
 
 
public class RoundShape {
 
 
	Point[] points;
    GeneralPath circle;
    final int p = 5;
 
    double x ;
    double y;
 
    public RoundShape(double x, double y){
    	this.x=x;
    	this.y=y;
    	initPoints();
    	initCircle();
    }
 
 
 
 
 
 
    private void initPoints()
    {
        int numberOfPoints = 360/p;
        points = new Point[numberOfPoints];
 
        double r = 50.0;
        int count = 0;
        for(int theta = 0; theta < 360; theta+=p)
        {
            int xpt = (int)(x + r * Math.cos(Math.toRadians(theta)));
            int ypt = (int)(y + r * Math.sin(Math.toRadians(theta)));
            points[count++] = new Point(xpt, ypt);
        }
    }
 
    private void initCircle()
    {
        circle = new GeneralPath();
        for(int j = 0; j < points.length; j++)
        {
            if(j == 0)
                circle.moveTo(points[j].x, points[j].y);
            else
                circle.lineTo(points[j].x, points[j].y);
        }
        circle.closePath();
    }
 
	public void paintRound(Graphics2D g2d){
 
		Shape round=getroundShape();
		g2d.setColor(Color.black);
		g2d.draw(round);
		g2d.setColor(Color.gray);
		g2d.draw(new Rectangle2D.Double(x, y-50, 4.0, 5.0));
		g2d.draw(new Rectangle2D.Double(x, y+50, 4.0, 5.0));
		g2d.draw(new Rectangle2D.Double(x-50, y, 4.0, 5.0));
		g2d.draw(new Rectangle2D.Double(x+50, y, 4.0, 5.0));
		//Shape s1=getSPointRectangle(175, 125, 4, 5);
		//g2d.draw(s1);
 
 
	}
 
 
 
 
 
 
 
	/* private Shape getSPointRectangle(int x, int y, int w, int h) {
	        return new Rectangle2D.Double(x - 3, y - 3, 6, 6);
	    }*/
 
 
 
 
 
	public Shape getroundShape(){
		Shape s=circle;
		return s;
 
	}
 
 
 
 
 
 
 
 
 
 
 
 
 
 
}
 
//class2
 
import javax.swing.*;
 
//import MainDrawing.MouseDrag;
 
import java.awt.*;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
 
 
 
public class MainRound extends JPanel {
 
	double x,y;
	int width,height;
	MouseDrag mouseDrag;
	RoundShape rs=new RoundShape(x,y );
 
	public MainRound(){
 
		 mouseDrag = new MouseDrag();
	      addMouseListener(mouseDrag);
	      addMouseMotionListener(mouseDrag);
	}
 
 
	 private final class MouseDrag extends MouseAdapter {
	        private boolean dragging = false;
	        private Point last;
 
	        @Override
	        public void mousePressed(MouseEvent m) {
	            last = m.getPoint();
	           // dragging = isInsideEllipse(last);
	            if (!dragging) {
	                x = last.x;
	                y = last.y;
	                width = 0;
	                height = 0;
	            }
	         //   repaint();
	        }
 
	        @Override
	        public void mouseReleased(MouseEvent m) {
	            //last = null;
	            dragging = true;
	           repaint();
	        }
 
	        @Override
	        public void mouseDragged(MouseEvent m) {
	            int dx = m.getX() - last.x;
	            int dy = m.getY() - last.y;
	            if (dragging) {
	                x += dx;
	                y += dy;
	            } else {
	                width += dx;
	                height += dy;
	            }
	            last = m.getPoint();
	            repaint();
	        }
 
 
	 }
 
 
 
	public void paintComponent(Graphics g){
 
		super.paintComponent(g);
        Graphics2D g2d = (Graphics2D)g;
        g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                            RenderingHints.VALUE_ANTIALIAS_ON);
 
       // g2d.setPaint(Color.black);
        g2d.setStroke(new BasicStroke(15));
 
        rs.paintRound(g2d);
 
	}
 
 
	public static void main(String args[]){
 
		MainRound mr=new MainRound();
		JFrame frame=new JFrame();
		frame.setContentPane(mr);
		frame.setVisible(true);
		frame.setSize(300,300);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	}
 
}