// Helene Martin, CSE 142
// Demonstrates basics of using graphics

import java.awt.*;  // Abstract (Another) Windowing Toolkit

public class GraphicsDemo {
   public static void main(String[] args) {
      DrawingPanel p = new DrawingPanel(300, 500);
      Graphics g = p.getGraphics();
      
      g.setColor(Color.GREEN);
      g.fillOval(10, 10, 90, 90);
      
      g.setColor(Color.BLUE);
      g.drawOval(10, 10, 90, 90);
      //x1  y1  x2   y2
      g.drawLine(10, 10, 100, 100);
      //x1  y1  w   h
      g.drawRect(10, 10, 90, 90);
      
      // using loops that start at 0 makes coordinate
      // math easier
      for (int i = 0; i < 3; i++) {
         g.drawOval(200 + 20 * i, 10 + 20 * i, 20, 20);
      }
      
      // we can use for loop figures to get expressions
      //g.drawOval(200, 10, 20, 20);
      //g.drawOval(220, 30, 20, 20);
      //g.drawOval(240, 50, 20, 20);
   }
}