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package demos.jgears;
import demos.gears.Gears;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Font;
import java.awt.GradientPaint;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.geom.AffineTransform;
import java.awt.image.BufferedImage;
import java.io.InputStream;
import java.text.DecimalFormat;
import javax.imageio.ImageIO;
import javax.media.nwi.NWCapabilities;
import javax.media.opengl.awt.GLJPanel;
import com.sun.opengl.util.Animator;
import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
/**
* JGears.java <BR>
* author: Brian Paul (converted to Java by Ron Cemer and Sven Goethel) <P>
*
* This version is equal to Brian Paul's version 1.2 1999/10/21
*/
public class JGears extends GLJPanel {
private static NWCapabilities caps;
private long startTime;
private int frameCount;
private float fps;
private static Font fpsFont = new Font("SansSerif", Font.BOLD, 24);
private DecimalFormat format = new DecimalFormat("####.00");
private BufferedImage javaImage;
private BufferedImage openglImage;
static {
caps = new NWCapabilities();
caps.setAlphaBits(8);
}
public JGears() {
super(caps, null, null);
addGLEventListener(new Gears());
try {
InputStream in = JGears.class.getClassLoader().getResourceAsStream("demos/data/images/java_logo.png");
BufferedImage image = ImageIO.read(in);
javaImage = scaleImage(image, 0.25f, 0.25f);
in = JGears.class.getClassLoader().getResourceAsStream("demos/data/images/opengl_logo.png");
image = ImageIO.read(in);
openglImage = scaleImage(image, 0.45f, 0.45f);
} catch (Exception e) {
e.printStackTrace();
}
}
public void paintComponent(Graphics g) {
super.paintComponent(g);
if (startTime == 0) {
startTime = System.currentTimeMillis();
}
if (++frameCount == 30) {
long endTime = System.currentTimeMillis();
fps = 30.0f / (float) (endTime - startTime) * 1000;
frameCount = 0;
startTime = System.currentTimeMillis();
}
if (fps > 0) {
g.setColor(Color.WHITE);
g.setFont(fpsFont);
g.drawString("FPS: " + format.format(fps), getWidth() - 140, getHeight() - 30);
}
int sp = 10;
if (javaImage != null) {
g.drawImage(javaImage, sp, getHeight() - javaImage.getHeight() - sp, null);
if (openglImage != null) {
g.drawImage(openglImage, sp + javaImage.getWidth() + sp, getHeight() - openglImage.getHeight() - sp, null);
}
}
}
// Helper routine for various demos
public static JPanel createGradientPanel() {
JPanel gradientPanel = new JPanel() {
public void paintComponent(Graphics g) {
((Graphics2D) g).setPaint(new GradientPaint(0, 0, Color.WHITE,
getWidth(), getHeight(), Color.DARK_GRAY));
g.fillRect(0, 0, getWidth(), getHeight());
}
};
gradientPanel.setLayout(new BorderLayout());
return gradientPanel;
}
private BufferedImage scaleImage(BufferedImage img, float xScale, float yScale) {
BufferedImage scaled = new BufferedImage((int) (img.getWidth() * xScale),
(int) (img.getHeight() * yScale),
BufferedImage.TYPE_INT_ARGB);
Graphics2D g = scaled.createGraphics();
g.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC);
g.drawRenderedImage(img, AffineTransform.getScaleInstance(xScale, yScale));
return scaled;
}
public static void main(String[] args) {
JFrame frame = new JFrame("Gear Demo");
frame.getContentPane().setLayout(new BorderLayout());
final GLJPanel drawable = new JGears();
drawable.setOpaque(false);
JPanel gradientPanel = createGradientPanel();
frame.getContentPane().add(gradientPanel, BorderLayout.CENTER);
gradientPanel.add(drawable, BorderLayout.CENTER);
final JCheckBox checkBox = new JCheckBox("Transparent", true);
checkBox.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
drawable.setOpaque(!checkBox.isSelected());
}
});
frame.getContentPane().add(checkBox, BorderLayout.SOUTH);
frame.setSize(300, 300);
final Animator animator = new Animator(drawable);
frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
// Run this on another thread than the AWT event queue to
// make sure the call to Animator.stop() completes before
// exiting
new Thread(new Runnable() {
public void run() {
animator.stop();
System.exit(0);
}
}).start();
}
});
frame.setVisible(true);
animator.start();
}
}
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