From bdc9c5f4d9a9a428538a402c1248b4502415e6a6 Mon Sep 17 00:00:00 2001
From: Kenneth Russel <kbrussel@alum.mit.edu>
Date: Wed, 17 Aug 2005 21:41:40 +0000
Subject: Revised JGears demo to add FPS counter and logos drawn with Java2D
 and changed JRefract and JGearsFullscreen demos to use JGears instead. Fixed
 bugs in fullscreen demos where workarounds were lost during last refactoring;
 created new FullscreenWorkaround GLEventListener which implements the
 workaround.

git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/../svn-server-sync/jogl-demos/branches/JSR-231@114 3298f667-5e0e-4b4a-8ed4-a3559d26a5f4
---
 src/demos/jgears/JGears.java | 96 ++++++++++++++++++++++++++++++++++++++++----
 1 file changed, 88 insertions(+), 8 deletions(-)

(limited to 'src/demos/jgears')

diff --git a/src/demos/jgears/JGears.java b/src/demos/jgears/JGears.java
index 42e9dea..059b2ea 100644
--- a/src/demos/jgears/JGears.java
+++ b/src/demos/jgears/JGears.java
@@ -2,6 +2,11 @@ package demos.jgears;
 
 import java.awt.*;
 import java.awt.event.*;
+import java.awt.geom.*;
+import java.awt.image.*;
+import java.io.*;
+import java.text.*;
+import javax.imageio.*;
 import javax.swing.*;
 
 import net.java.games.jogl.*;
@@ -14,16 +19,68 @@ import demos.gears.Gears;
  * This version is equal to Brian Paul's version 1.2 1999/10/21
  */
 
-public class JGears {
-  public static void main(String[] args) {
-    JFrame frame = new JFrame("Gear Demo");
-    frame.getContentPane().setLayout(new BorderLayout());
-    GLCapabilities caps = new GLCapabilities();
+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();
     caps.setAlphaBits(8);
-    final GLJPanel drawable = GLDrawableFactory.getFactory().createGLJPanel(caps);
-    drawable.setOpaque(false);
-    drawable.addGLEventListener(new Gears());
+  }
+  
+  public JGears() {
+    super(caps, new DefaultGLCapabilitiesChooser(), 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,
@@ -32,6 +89,29 @@ public class JGears {
         }
       };
     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());
+    GLCapabilities caps = new GLCapabilities();
+    caps.setAlphaBits(8);
+    final GLJPanel drawable = new JGears();
+    drawable.setOpaque(false);
+
+    JPanel gradientPanel = createGradientPanel();
     frame.getContentPane().add(gradientPanel, BorderLayout.CENTER);
     gradientPanel.add(drawable, BorderLayout.CENTER);
 
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