//======================================================================
//      Project:    CS 116, Simple 2-D graphics demo
//      Author:     Tom Kelliher
//      File:       Graphics2d.java
//      Purpose:    To demonstrate some simple 2-D graphics and some
//                  object manipulation
//======================================================================

import java.applet.*;
import java.awt.*;

//======================================================================
//      Class:      Graphics2d
//      Purpose:    Display some simple graphical elements.
//======================================================================

public class Graphics2d extends Applet
{

   //===================================================================
   //   Method:     init
   //   Purpose:    Set background color.
   //===================================================================

   public void init()
   {
      setBackground(Color.black);
   }

   //===================================================================
   //   Method:     paint
   //   Purpose:    Display the graphical elements.
   //   Input:      A graphics object.
   //===================================================================

   public void paint(Graphics g)
   {
      // Create two custom colors.
      Color myColor1 = new Color(200, 0, 100);
      Color myColor2 = new Color(0, 150, 200);

      // Create a rectangular box for sizing graphical elements later.
      Rectangle myRect = new Rectangle(50, 100, 50, 100);

      // Draw a filled rectangle.
      g.setColor(myColor1);
      g.fillRect(myRect.x, myRect.y, myRect.width, myRect.height);

      // Draw a second filled rectangle, shifted from the first.
      myRect.translate(100, 100);
      g.setColor(myColor2);
      g.fillRect(myRect.x, myRect.y, myRect.width, myRect.height);

      // Draw a filled oval, shifted yet again.
      myRect.translate(0, -150);
      g.setColor(myColor1);
      g.fillOval(myRect.x, myRect.y, myRect.width, myRect.height);

      // Shrink the rectangular box by one-half and draw an oval
      // outline.
      myRect.grow(-12, -25);
      g.setColor(Color.black);
      g.drawOval(myRect.x, myRect.y, myRect.width, myRect.height);

      // Draw a line.
      g.setColor(myColor2);
      g.drawLine(50, 50, 350, 350);

      // Draw text.
      g.setColor(Color.red);
      g.setFont(new Font("Serif", Font.ITALIC, 20));
      g.drawString("The 20 Pt. italic Serif font", 20, 40);

      // Draw more text.
      g.setColor(Color.green);
      g.setFont(new Font("SansSerif", Font.BOLD, 30));
      g.drawString("The 30 Pt. bold SansSerif font", 20, 375);
   }
}