//file Primitives.java
//showing off primitives
//author: Harriet Fell 1/2007
import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;

import javax.swing.*;
import java.util.Random;

public class Primitives extends JComponent {

public void paint(Graphics g) {
	Graphics2D g2 = (Graphics2D)g;
	int wd = getSize().width;
	int ht = getSize().height;
 	//System.out.println(wd);
	//System.out.println(ht);
	

//	 a filled red rectangle
	g2.setPaint(Color.red);
	g2.fillRect(10, 50, 100, 200);

// a filled yellow oval
	g2.setPaint(Color.yellow);
	g2.fillOval(200, 30, 200, 80);// Outline a green oval
	
// an outlined green oval
	g2.setPaint(Color.green);
	g2.setStroke(new BasicStroke(4));
	g2.drawOval(200, 150, 200, 80);
	
// a magenta line
	g2.setPaint(Color.magenta);
	g2.setStroke(new BasicStroke(12));
	g2.drawLine(wd/2, ht/3, wd, 0);
	
// 1000 black points
// Use drawLine(x, y, x, y) to set a Pixel
	Random rnums = new Random();
	g2.setStroke(new BasicStroke(1));
	g2.setPaint(Color.black);
	for (int pnum = 0; pnum < 1000; pnum++){	
		int x = rnums.nextInt(wd/4); 
		int y = rnums.nextInt(ht/4); 
		g2.drawLine(10 + x, 300 + y, 10 + x, 300 + y);		
	}
	
// some text
	g2.setFont(new Font("Times New Roman", Font.ITALIC, Math.min(wd/20, ht/20)));
	g2.setPaint(new GradientPaint(0, 0, Color.red, wd, ht, Color.yellow, false));
	g2.drawString("CSU540 - Computer Graphics", wd/3, 0 + ht/2);

	g2.setStroke(new BasicStroke(5)); // 5 pixels thick
//RoundRectangle2D.Double(double x, double y, double w, double h, double arcw, double arch) 
	g2.setPaint(Color.black);	
	Shape rr = new  RoundRectangle2D.Double(350,450,400,300,70,50);
	g2.draw(rr);
	
//Ellipse2D.Double(double x, double y, double w, double h) 
	g2.setPaint(Color.yellow);
	Shape el = new  Ellipse2D.Double(350,450,400,300);
	g2.fill(el);
	
//Arc2D.Double(double x, double y, double w, double h, double start, double extent, int type)
	g2.setPaint(Color.red);
	Shape ar1 = new  Arc2D.Double(350,450,400,300,0,45,Arc2D.PIE);
	g2.draw(ar1);
	g2.setPaint(Color.green);
	Shape ar2 = new  Arc2D.Double(350,450,400,300,90,120,Arc2D.CHORD);
	g2.draw(ar2);
	g2.setPaint(Color.blue);
	Shape ar3 = new  Arc2D.Double(350,450,400,300,270,60,Arc2D.OPEN);
	g2.draw(ar3);
}

public static void main(String[] args){
	JFrame f = new JFrame("Primitives");
	Container c = f.getContentPane();
	c.setLayout(new BorderLayout());
	c.add(new Primitives(), BorderLayout.CENTER);
	f.setSize(800, 822);

	f.addWindowListener(new WindowAdapter(){
		public void windowClosing(WindowEvent e) { System.exit(0); }
	});

	f.setVisible(true);
}

}