fpscounterdemo.java

java 3d编程的一些例子源代码

/*
 * $RCSfile: FPSCounterDemo.java,v $
 *
 * Copyright (c) 2006 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.
 *
 * - Redistribution in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in
 *   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
 * NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF
 * USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
 * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR
 * ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
 * CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
 * REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
 * INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGES.
 *
 * You acknowledge that this software is not designed, licensed or
 * intended for use in the design, construction, operation or
 * maintenance of any nuclear facility.
 *
 * $Revision: 1.3 $
 * $Date: 2006/09/29 18:05:40 $
 * $State: Exp $
 */

package org.jdesktop.j3d.examples.fps_counter;

import com.sun.j3d.utils.universe.*;
import com.sun.j3d.utils.geometry.ColorCube;
import javax.media.j3d.*;
import javax.vecmath.*;
import java.awt.GraphicsConfiguration;
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 FPSCounterDemo1 -h for help on the various arguments.
 */
public class FPSCounterDemo extends javax.swing.JFrame {

    private SimpleUniverse univ = null;
    private BranchGroup scene = 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;
    }

    private Canvas3D createUniverse() {
	// Get the preferred graphics configuration for the default screen
	GraphicsConfiguration config =
	    SimpleUniverse.getPreferredConfiguration();

	// Create a Canvas3D using the preferred configuration
	Canvas3D c = new Canvas3D(config);

	// Create simple universe with view branch
	univ = new SimpleUniverse(c);

	// This will move the ViewPlatform back a bit so the
	// objects in the scene can be viewed.
	univ.getViewingPlatform().setNominalViewingTransform();

	return c;
    }

    /**
     * Creates new form FPSCounterDemo
     */
    public FPSCounterDemo() {
        // Initialize the GUI components
        initComponents();
        
        // Create Canvas3D and SimpleUniverse; add canvas to drawing panel
        Canvas3D c = createUniverse();
        drawingPanel.add(c, java.awt.BorderLayout.CENTER);
        
        // Create the content branch and add it to the universe
        scene = createSceneGraph();
        univ.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);
        
    }
    
    /** Parses the commandline for the various switches to set the FPSCounter
     * variables.
     * All arguments are of the form <i>-name value</i>.
     * All -name arguments can be shortened to one character. All the value
     * arguments take a number. The arguments accepted are :
     * <ul>
     * <li>warmupTime : Specifies amount of time the FPSCounter should wait
     * for the HotSpot<sup><font size="-2">TM</font></sup> VM to perform
     * initial optimizations. Specified in milliseconds<br>
     * <li>loopCount  : Specifies the number of sampling intervals over which
     * the FPSCounter should calculate the aggregate and average frame rate.
     * Specified as a count. <br>
     * <li>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. <br>
     * <li>help	   : Prints the accepted arguments. <br>
     * </ul>
     */
   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.");
	      }
	  }
      }
   }
   
    // ----------------------------------------------------------------
    
    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    // <editor-fold defaultstate="collapsed" desc=" Generated Code ">//GEN-BEGIN:initComponents
    private void initComponents() {
        drawingPanel = new javax.swing.JPanel();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setTitle("FPSCounterDemo");
        drawingPanel.setLayout(new java.awt.BorderLayout());

        drawingPanel.setPreferredSize(new java.awt.Dimension(250, 250));
        getContentPane().add(drawingPanel, java.awt.BorderLayout.CENTER);

        pack();
    }// </editor-fold>//GEN-END:initComponents
    
    /**
     * @param args the command line arguments
     */
    public static void main(final String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                FPSCounterDemo fp = new FPSCounterDemo();
                fp.parseArgs(args);
                fp.setVisible(true);
            }
        });
    }
    
    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JPanel drawingPanel;
    // End of variables declaration//GEN-END:variables
    
}