import java.awt.Frame;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.media.opengl.GL2;
import javax.media.opengl.GLAutoDrawable;
import javax.media.opengl.awt.GLCanvas;
import javax.media.opengl.GLEventListener;

public class Renderer implements GLEventListener {

	public static void main(String[] args) {
		Frame frame = new Frame("JOGL HelloWorld");
		GLCanvas canvas = new GLCanvas();
		
		canvas.addGLEventListener(new Renderer());
		
		frame.add(canvas);
		frame.setSize(300, 300);
		frame.setVisible(true);
		frame.addWindowListener(new WindowAdapter() {
			public void windowClosing(WindowEvent e) {
				System.exit(0);
			}
		});
	}
	
	public void init(GLAutoDrawable drawable) {
	}

	public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) {
	}

	public void display(GLAutoDrawable drawable) {
	    GL2 gl = drawable.getGL().getGL2();

		gl.glColor3f(1.0f, 1.0f, 0.5f);   

		gl.glBegin(GL2.GL_POLYGON);
		gl.glVertex2f(-0.5f, -0.5f);
		gl.glVertex2f(-0.5f, 0.5f);
		gl.glVertex2f(0.5f, 0.5f);
		gl.glVertex2f(0.5f, -0.5f);
		gl.glVertex2f(0f, 0f);
		gl.glEnd();
	}

	public void dispose(GLAutoDrawable drawable)
	{
	}
}