1 files changed, 156 insertions, 0 deletions
diff --git a/src/demos/jgears/JGears.java b/src/demos/jgears/JGears.java
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+++ b/src/demos/jgears/JGears.java
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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.opengl.GLCapabilities;
+import javax.media.opengl.GLProfile;
+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 GLCapabilities 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 GLCapabilities(GLProfile.get(GLProfile.GL2));
+    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();
+  }
+}