// Zorah Fung, CSE 142
// Some code to show an example of using DrawingPanel and Graphics

import java.awt.*; // Abstract Windowing Toolkit
                   // must load awt package to use graphics and Color

public class GraphicsDemo {
   public static void main(String[] args) {
      DrawingPanel panel = new DrawingPanel(500, 300);
      Graphics g = panel.getGraphics();
   
      //          x,  y, width, height
      g.drawRect(10, 10,    90,    90);
      g.setColor(Color.MAGENTA);
      //          x,  y, width, height
      g.fillOval(10, 10, 90, 90);
      g.setColor(Color.GREEN);
      g.drawOval(10, 10, 90, 90);
      
      
      g.setColor(Color.BLACK);
      //         x1, y1,  x2,  y2
      g.drawLine(10, 10, 100, 100);
      
      g.setColor(Color.RED);
      // For graphics, we can start our loops at 0, so that out starting values are
      // clear and easy to read
      // Here, our ovals start being drawn at x = 200 and y = 10
      for (int i = 0; i < 3; i++) {
         g.fillOval(20 * i + 200, 20 * i + 10, 20, 20);
      }
      /*
         These method calls are redundant! Because we have a repetitive, predictable pattern,
         we can use a for loop to reduce the redundancy
         g.fillOval(200, 10, 20, 20);
         g.fillOval(220, 30, 20, 20);
         g.fillOval(240, 50, 20, 20);
      */
   }
}