/*
* $RCSfile$
*
* Copyright (c) 2004 Sun Microsystems, Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistribution of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
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* - Redistribution in binary form must reproduce the above copyright
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* the documentation and/or other materials provided with the
* distribution.
*
* Neither the name of Sun Microsystems, Inc. or the names of
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any
* kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
* WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
* EXCLUDED. SUN MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL
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* $Revision$
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*/
import java.applet.Applet;
import java.awt.BorderLayout;
import java.awt.event.*;
import java.awt.GraphicsConfiguration;
import com.sun.j3d.utils.applet.JMainFrame;
import com.sun.j3d.utils.geometry.ColorCube;
import com.sun.j3d.utils.universe.*;
import javax.media.j3d.*;
import javax.vecmath.*;
import javax.swing.JOptionPane;
/** This program demonstrates the use of the frames per second counter.
* The program displays a rotating cube and sets up the FPSCounter to compute
* the frame rate. The FPSCounter is set up with default values:
* - run indefinitely
* - 2 sec. warmup time
* - display average frame rate every fifth sampling interval.
* The default values can be changed through the command line
* arguments. Use FPSCounterDemo -h for help on the various arguments.
*/
public class FPSCounterDemo extends Applet {
private SimpleUniverse u = null;
private FPSCounter fpsCounter = new FPSCounter();
BranchGroup createSceneGraph() {
// Create the root of the branch graph
BranchGroup objRoot = new BranchGroup();
// Create the TransformGroup node and initialize it to the
// identity. Enable the TRANSFORM_WRITE capability so that
// our behavior code can modify it at run time. Add it to
// the root of the subgraph.
TransformGroup objTrans = new TransformGroup();
objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
objRoot.addChild(objTrans);
// Create a simple Shape3D node; add it to the scene graph.
objTrans.addChild(new ColorCube(0.4));
// Create a new Behavior object that will perform the
// desired operation on the specified transform and add
// it into the scene graph.
Transform3D yAxis = new Transform3D();
Alpha rotationAlpha = new Alpha(-1, 4000);
RotationInterpolator rotator =
new RotationInterpolator(rotationAlpha, objTrans, yAxis,
0.0f, (float) Math.PI*2.0f);
BoundingSphere bounds = new BoundingSphere(new Point3d(0.0,0.0,0.0),
100.0);
rotator.setSchedulingBounds(bounds);
objRoot.addChild(rotator);
// Create the Framecounter behavior
fpsCounter.setSchedulingBounds(bounds);
objRoot.addChild(fpsCounter);
return objRoot;
}
public FPSCounterDemo(String args[]) {
}
public FPSCounterDemo() {
}
public void init() {
setLayout(new BorderLayout());
GraphicsConfiguration config =
SimpleUniverse.getPreferredConfiguration();
Canvas3D c = new Canvas3D(config);
add("Center", c);
// Create a simple scene and attach it to the virtual universe
BranchGroup scene = createSceneGraph();
// Parse the command line to set the various parameters
// Have Java 3D perform optimizations on this scene graph.
scene.compile();
u = new SimpleUniverse(c);
// This will move the ViewPlatform back a bit so the
// objects in the scene can be viewed.
u.getViewingPlatform().setNominalViewingTransform();
u.addBranchGraph(scene);
JOptionPane.showMessageDialog(this,
("This program measures the number of frames rendered per second.\n" +
"Note that the frame rate is limited by the refresh rate of the monitor.\n" +
"To get the true frame rate you need to disable vertical retrace.\n\n" +
"On Windows(tm) you do this through the Control Panel.\n\n" +
"On Solaris set the environment variable OGL_NO_VBLANK"),
"Frame Counter",
JOptionPane.INFORMATION_MESSAGE);
}
public void destroy() {
u.cleanup();
}
//
// The following allows FPSCounterDemo to be run as an application
// as well as an applet
//
public static void main(String[] args) {
FPSCounterDemo fp = new FPSCounterDemo();
fp.parseArgs(args);
JMainFrame frame = new JMainFrame(fp, 256, 256);
}
/** Parses the commandline for the various switches to set the FPSCounter
* variables.
* All arguments are of the form -name value.
* All -name arguments can be shortened to one character. All the value
* arguments take a number. The arguments accepted are :
*
* - warmupTime : Specifies amount of time the FPSCounter should wait
* for the HotSpotTM VM to perform
* initial optimizations. Specified in milliseconds
* - loopCount : Specifies the number of sampling intervals over which
* the FPSCounter should calculate the aggregate and average frame rate.
* Specified as a count.
* - maxLoops : Specifies that the FPSCounter should run for only
* these many sampling intervals. Specified as number. If this argument
* is not specified, the FPSCounter runs indefinitely.
* - help : Prints the accepted arguments.
*
*/
private void parseArgs(String args[]) {
for(int i = 0; i < args.length; i++) {
if(args[i].startsWith("-")) {
if(args[i].startsWith("w", 1)) {
i++;
System.out.println("Warmup time : " + args[i]);
int w = new Integer(args[i]).intValue();
fpsCounter.setWarmupTime(w);
}
else if(args[i].startsWith("l", 1)) {
i++;
System.out.println("Loop count : " + args[i]);
int l = new Integer(args[i]).intValue();
fpsCounter.setLoopCount(l);
}
else if(args[i].startsWith("m", 1)) {
i++;
System.out.println("Max Loop Count : " + args[i]);
int m = new Integer(args[i]).intValue();
fpsCounter.setMaxLoops(m);
}
else if(args[i].startsWith("h", 1)) {
System.out.println("Usage : FPSCounterDemo [-name value]\n" +
"All arguments are of the form: -name value. All -name arguments can be\n" +
"shortened to one character. All the value arguments take a number. The\n" +
"arguments accepted are:\n\n" +
" -warmupTime : Specifies amount of time the FPSCounter should wait\n" +
" for the HotSpot(tm) VM to perform initial\n" +
" optimizations. Specified in milliseconds\n\n" +
" -loopCount : Specifies the number of sampling intervals over which\n" +
" the FPSCounter should calculate the aggregate and average\n" +
" frame rate. Specified as a count\n\n" +
" -maxLoops : Specifies that the FPSCounter should run for only these\n" +
" many sampling intervals. Specified as number. If this argument\n" +
" is not specified, the FPSCounter runs indefinitely.\n\n" +
" -help : Prints this message.");
}
}
}
}
}