Graphics Demo 2: Arcs and Custom Colors

Here are some more examples of the various functions at your disposal in Java's graphics library. Type in the following code and get it to compile.

Files Needed

import java.awt.*;
import javax.swing.JFrame;

public class GraphicsDemo2 extends Canvas
{
    public void paint( Graphics g )
    {
        g.setColor(Color.black);

        g.drawRect(50,20,100,200);  // draw a rectangle
        g.drawOval(160,20,100,200); // draw a filled-in oval

        //arcs
        g.drawArc(270,20,100,200,0,270); // draw an arc that starts at 0 degrees
                                         //   and has an arclength of 270 degrees
        g.drawArc(50,250,150,150,90,180);
        g.drawArc(210,250,150,150,45,90);
        g.fillArc(210,280,150,150,45,90);

        g.setColor(Color.yellow);
        g.fillArc(150,400,150,150,45,270); // chomp
        
        // custom colors
        Color myOrange = new Color(230,92,0); // amount of red, green, blue in the color
                                              // Each component has a value from 0-255
        g.setColor(myOrange);
        g.fillOval(500,50,150,150);

        Color myGrey = new Color(238,238,238);
        g.setColor(myGrey);
        g.fillOval(550,100,50,50);

        g.setColor(Color.yellow);
        g.fillOval(500,210,150,150);

        g.setColor(Color.green);
        g.fillOval(500,370,150,150);
    }

    public static void main( String[] args )
    {
        JFrame win = new JFrame("GraphicsDemo2: Arcs and Colors");
        win.setSize(800,600);
        win.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        GraphicsDemo2 canvas = new GraphicsDemo2();
        win.add( canvas );
        win.setVisible(true);
    }
}

What You Should Do on Your Own

Assignments turned in without these things will receive half credit or less.

  1. Using either the Color Schemer Online or ColorPicker.com, make a color of your own and change the middle circle (the yellow one) to your custom color.
  2. Draw a second, slightly smaller pacman to the right of the first pacman. Make her face to the left and make her pink.

©2013 Graham Mitchell

This assignment is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 United States License.
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