Java/3D/3D Environment
Содержание
Environment Explorer
<source lang="java">
/*
* %Z%%M% %I% %E% %U% * * ************************************************************** "Copyright (c) * 2001 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: * * -Redistributions 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 AND ITS LICENSORS SHALL NOT BE * LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING * OR DISTRIBUTING THE 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 SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY * OF SUCH DAMAGES. * * You acknowledge that Software is not designed,licensed or intended for use in * the design, construction, operation or maintenance of any nuclear facility." * * *************************************************************************** */
import java.awt.AWTEvent; import java.awt.BorderLayout; import java.awt.ruponent; import java.awt.Container; import java.awt.Dimension; import java.awt.GraphicsConfiguration; import java.awt.GridLayout; import java.awt.Point; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.KeyEvent; import java.awt.image.BufferedImage; import java.io.BufferedOutputStream; import java.io.FileOutputStream; import java.text.NumberFormat; import java.util.Enumeration; import java.util.EventListener; import java.util.EventObject; import java.util.Hashtable; import java.util.Vector; import javax.media.j3d.AmbientLight; import javax.media.j3d.Appearance; import javax.media.j3d.Background; import javax.media.j3d.BackgroundSound; import javax.media.j3d.Behavior; import javax.media.j3d.BoundingSphere; import javax.media.j3d.BranchGroup; import javax.media.j3d.Canvas3D; import javax.media.j3d.DirectionalLight; import javax.media.j3d.ExponentialFog; import javax.media.j3d.Group; import javax.media.j3d.ImageComponent; import javax.media.j3d.ImageComponent2D; import javax.media.j3d.Light; import javax.media.j3d.LinearFog; import javax.media.j3d.Link; import javax.media.j3d.Material; import javax.media.j3d.MediaContainer; import javax.media.j3d.PointLight; import javax.media.j3d.PointSound; import javax.media.j3d.QuadArray; import javax.media.j3d.Screen3D; import javax.media.j3d.Shape3D; import javax.media.j3d.SharedGroup; import javax.media.j3d.Sound; import javax.media.j3d.SpotLight; import javax.media.j3d.Switch; import javax.media.j3d.Transform3D; import javax.media.j3d.TransformGroup; import javax.media.j3d.View; import javax.media.j3d.WakeupCondition; import javax.media.j3d.WakeupCriterion; import javax.media.j3d.WakeupOnAWTEvent; import javax.swing.Box; import javax.swing.BoxLayout; import javax.swing.JApplet; import javax.swing.JButton; import javax.swing.JCheckBox; import javax.swing.JComboBox; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.JSlider; import javax.swing.JTabbedPane; import javax.swing.event.ChangeEvent; import javax.swing.event.ChangeListener; import javax.vecmath.AxisAngle4f; import javax.vecmath.Color3f; import javax.vecmath.Point2f; import javax.vecmath.Point3d; import javax.vecmath.Point3f; import javax.vecmath.Vector3f; import com.sun.image.codec.jpeg.JPEGCodec; import com.sun.image.codec.jpeg.JPEGEncodeParam; import com.sun.image.codec.jpeg.JPEGImageEncoder; import com.sun.j3d.utils.applet.MainFrame; import com.sun.j3d.utils.behaviors.vp.OrbitBehavior; import com.sun.j3d.utils.geometry.Sphere; import com.sun.j3d.utils.image.TextureLoader; import com.sun.j3d.utils.universe.SimpleUniverse; import com.sun.j3d.utils.universe.ViewingPlatform; public class EnvironmentExplorer extends JApplet implements
Java3DExplorerConstants {
// Scene graph items
SimpleUniverse u;
// Light items
Group lightGroup;
AmbientLight lightAmbient;
DirectionalLight lightDirectional;
PointLight lightPoint;
SpotLight lightSpot;
Point3f attenuation = new Point3f(1.0f, 0.0f, 0.0f);
float spotSpreadAngle = 60; // degrees
float spotConcentration = 5.0f;
// Fog items
Switch fogSwitch;
IntChooser fogChooser;
// Background items
Switch bgSwitch;
IntChooser bgChooser;
// Sound items
Switch soundSwitch;
IntChooser soundChooser;
BackgroundSound soundBackground;
PointSound soundPoint;
// Display object
Switch spheresSwitch;
Switch gridSwitch;
// image grabber
boolean isApplication;
Canvas3D canvas;
OffScreenCanvas3D offScreenCanvas;
View view;
// GUI elements
JTabbedPane tabbedPane;
// Config items
String codeBaseString;
String outFileBase = "env";
int outFileSeq = 0;
static final float OFF_SCREEN_SCALE = 1.0f;
int colorMode = USE_COLOR;
// Temporaries that are reused
Transform3D tmpTrans = new Transform3D();
Vector3f tmpVector = new Vector3f();
AxisAngle4f tmpAxisAngle = new AxisAngle4f();
// configurable colors. These get set based on the rendering
// mode. By default they use color. B&W is set up for print
// file output: white background with B&W coloring.
Color3f objColor;
// geometric constants
Point3f origin = new Point3f();
/*
* Set up the lights. This is a group which contains the ambient light and a
* switch for the other lights. directional : white light pointing along Z
* axis point : white light near upper left corner of spheres spot : white
* light near upper left corner of spheres, pointing towards center.
*/
void setupLights() {
lightGroup = new Group();
// Set up the ambient light
lightAmbient = new AmbientLight(darkGrey);
lightAmbient.setInfluencingBounds(infiniteBounds);
lightAmbient.setCapability(Light.ALLOW_STATE_WRITE);
lightAmbient.setEnable(true);
lightGroup.addChild(lightAmbient);
// Set up the directional light
Vector3f lightDirection = new Vector3f(0.65f, -0.65f, -0.40f);
lightDirectional = new DirectionalLight(white, lightDirection);
lightDirectional.setInfluencingBounds(infiniteBounds);
lightDirectional.setEnable(true);
lightDirectional.setCapability(Light.ALLOW_STATE_WRITE);
lightGroup.addChild(lightDirectional);
// Set up the point light
Point3f lightPosition = new Point3f(-1.0f, 1.0f, 0.6f);
lightPoint = new PointLight(white, lightPosition, attenuation);
lightPoint.setInfluencingBounds(infiniteBounds);
lightPoint.setEnable(false);
lightPoint.setCapability(Light.ALLOW_STATE_WRITE);
lightPoint.setCapability(PointLight.ALLOW_ATTENUATION_WRITE);
lightGroup.addChild(lightPoint);
// Set up the spot light
// Point the light back at the origin
lightSpot = new SpotLight(white, lightPosition, attenuation,
lightDirection, (float) Math.toRadians(spotSpreadAngle),
spotConcentration);
lightSpot.setInfluencingBounds(infiniteBounds);
lightSpot.setEnable(false);
lightSpot.setCapability(Light.ALLOW_STATE_WRITE);
lightSpot.setCapability(PointLight.ALLOW_ATTENUATION_WRITE);
lightSpot.setCapability(SpotLight.ALLOW_CONCENTRATION_WRITE);
lightSpot.setCapability(SpotLight.ALLOW_SPREAD_ANGLE_WRITE);
lightGroup.addChild(lightSpot);
}
/*
* Setup the backgrounds. The bg tool creates a Switch and a GUI component
* for the backgrounds
*/
void setupBackgrounds() {
// initialize the background tool
BackgroundTool bgTool = new BackgroundTool(codeBaseString);
bgSwitch = bgTool.getSwitch();
bgChooser = bgTool.getChooser();
}
/*
* Setup the fog Switch and Chooser. Child values are: CHILD_NONE: Don"t use
* a fog 0: The linear Fog node 1: The exponential Fog node
*/
void setupFogs() {
fogSwitch = new Switch(Switch.CHILD_NONE);
fogSwitch.setCapability(Switch.ALLOW_SWITCH_WRITE);
// set up the linear fog
LinearFog fogLinear = new LinearFog(skyBlue, 6.0f, 12.0f);
fogLinear.setInfluencingBounds(infiniteBounds);
fogSwitch.addChild(fogLinear);
// set up the exponential fog
ExponentialFog fogExp = new ExponentialFog(skyBlue, 0.3f);
fogExp.setInfluencingBounds(infiniteBounds);
fogSwitch.addChild(fogExp);
// Create the chooser GUI
String[] fogNames = { "None", "Linear", "Exponential", };
int[] fogValues = { Switch.CHILD_NONE, 0, 1 };
fogChooser = new IntChooser("Fog:", fogNames, fogValues, 0);
fogChooser.addIntListener(new IntListener() {
public void intChanged(IntEvent event) {
int value = event.getValue();
fogSwitch.setWhichChild(value);
}
});
fogChooser.setValue(Switch.CHILD_NONE);
}
/*
* Set up the sound switch. The child values are: CHILD_NONE: 1No sound 0:
* BackgroundSound 1: PointSound 2: ConeSound
*/
void setupSounds() {
soundSwitch = new Switch(Switch.CHILD_NONE);
soundSwitch.setCapability(Switch.ALLOW_SWITCH_WRITE);
// Set up the sound media container
java.net.URL soundURL = null;
String soundFile = "techno_machine.au";
try {
soundURL = new java.net.URL(codeBaseString + soundFile);
} catch (java.net.MalformedURLException ex) {
System.out.println(ex.getMessage());
System.exit(1);
}
if (soundURL == null) { // application, try file URL
try {
soundURL = new java.net.URL("file:./" + soundFile);
} catch (java.net.MalformedURLException ex) {
System.out.println(ex.getMessage());
System.exit(1);
}
}
//System.out.println("soundURL = " + soundURL);
MediaContainer soundMC = new MediaContainer(soundURL);
// set up the Background Sound
soundBackground = new BackgroundSound();
soundBackground.setCapability(Sound.ALLOW_ENABLE_WRITE);
soundBackground.setSoundData(soundMC);
soundBackground.setSchedulingBounds(infiniteBounds);
soundBackground.setEnable(false);
soundBackground.setLoop(Sound.INFINITE_LOOPS);
soundSwitch.addChild(soundBackground);
// set up the point sound
soundPoint = new PointSound();
soundPoint.setCapability(Sound.ALLOW_ENABLE_WRITE);
soundPoint.setSoundData(soundMC);
soundPoint.setSchedulingBounds(infiniteBounds);
soundPoint.setEnable(false);
soundPoint.setLoop(Sound.INFINITE_LOOPS);
soundPoint.setPosition(-5.0f, 5.0f, 0.0f);
Point2f[] distGain = new Point2f[2];
// set the attenuation to linearly decrease volume from max at
// source to 0 at a distance of 15m
distGain[0] = new Point2f(0.0f, 1.0f);
distGain[1] = new Point2f(15.0f, 0.0f);
soundPoint.setDistanceGain(distGain);
soundSwitch.addChild(soundPoint);
// Create the chooser GUI
String[] soundNames = { "None", "Background", "Point", };
soundChooser = new IntChooser("Sound:", soundNames);
soundChooser.addIntListener(new IntListener() {
public void intChanged(IntEvent event) {
int value = event.getValue();
// Should just be able to use setWhichChild on
// soundSwitch, have to explictly enable/disable due to
// bug.
switch (value) {
case 0:
soundSwitch.setWhichChild(Switch.CHILD_NONE);
soundBackground.setEnable(false);
soundPoint.setEnable(false);
break;
case 1:
soundSwitch.setWhichChild(0);
soundBackground.setEnable(true);
soundPoint.setEnable(false);
break;
case 2:
soundSwitch.setWhichChild(1);
soundBackground.setEnable(false);
soundPoint.setEnable(true);
break;
}
}
});
soundChooser.setValue(Switch.CHILD_NONE);
}
// sets up a grid of spheres
void setupSpheres() {
// create a Switch for the spheres, allow switch changes
spheresSwitch = new Switch(Switch.CHILD_ALL);
spheresSwitch.setCapability(Switch.ALLOW_SWITCH_WRITE);
// Set up an appearance to make the Sphere with objColor ambient,
// black emmissive, objColor diffuse and white specular coloring
Material material = new Material(objColor, black, objColor, white, 32);
Appearance appearance = new Appearance();
appearance.setMaterial(material);
// create a sphere and put it into a shared group
Sphere sphere = new Sphere(0.5f, appearance);
SharedGroup sphereSG = new SharedGroup();
sphereSG.addChild(sphere);
// create a grid of spheres in the z=0 plane
// each has a TransformGroup to position the sphere which contains
// a link to the shared group for the sphere
for (int y = -2; y <= 2; y++) {
for (int x = -2; x <= 2; x++) {
TransformGroup tg = new TransformGroup();
tmpVector.set(x * 1.2f, y * 1.2f, -0.1f);
tmpTrans.set(tmpVector);
tg.setTransform(tmpTrans);
tg.addChild(new Link(sphereSG));
spheresSwitch.addChild(tg);
}
}
}
// sets up a grid of squares
void setupGrid() {
// create a Switch for the spheres, allow switch changes
gridSwitch = new Switch(Switch.CHILD_NONE);
gridSwitch.setCapability(Switch.ALLOW_SWITCH_WRITE);
// Set up an appearance to make the square3s with red ambient,
// black emmissive, red diffuse and black specular coloring
Material material = new Material(red, black, red, black, 64);
Appearance appearance = new Appearance();
appearance.setMaterial(material);
// create a grid of quads
int gridSize = 20; // grid is gridSize quads along each side
int numQuads = gridSize * gridSize;
int numVerts = numQuads * 4; // 4 verts per quad
// there will be 3 floats per coord and 4 coords per quad
float[] coords = new float[3 * numVerts];
// All the quads will use the same normal at each vertex, so
// allocate an array to hold references to the same normal
Vector3f[] normals = new Vector3f[numVerts];
Vector3f vertNormal = new Vector3f(0.0f, 0.0f, 1.0f);
float edgeLength = 5.0f; // length of each edge of the grid
float gridGap = 0.03f; // the gap between each quad
// length of each quad is (total length - sum of the gaps) / gridSize
float quadLength = (edgeLength - gridGap * (gridSize - 1)) / gridSize;
// create a grid of quads in the z=0 plane
// each has a TransformGroup to position the sphere which contains
// a link to the shared group for the sphere
float curX, curY;
for (int y = 0; y < gridSize; y++) {
curY = y * (quadLength + gridGap); // offset to lower left corner
curY -= edgeLength / 2; // center on 0,0
for (int x = 0; x < gridSize; x++) {
// this is the offset into the vertex array for the first
// vertex of the quad
int vertexOffset = (y * gridSize + x) * 4;
// this is the offset into the coord array for the first
// vertex of the quad, where there are 3 floats per vertex
int coordOffset = vertexOffset * 3;
curX = x * (quadLength + gridGap); // offset to ll corner
curX -= edgeLength / 2; // center on 0,0
// lower left corner
coords[coordOffset + 0] = curX;
coords[coordOffset + 1] = curY;
coords[coordOffset + 2] = 0.0f; // z
// lower right corner
coords[coordOffset + 3] = curX + quadLength;
coords[coordOffset + 4] = curY;
coords[coordOffset + 5] = 0.0f; // z
// upper right corner
coords[coordOffset + 6] = curX + quadLength;
coords[coordOffset + 7] = curY + quadLength;
coords[coordOffset + 8] = 0.0f; // z
// upper left corner
coords[coordOffset + 9] = curX;
coords[coordOffset + 10] = curY + quadLength;
coords[coordOffset + 11] = 0.0f; // z
for (int i = 0; i < 4; i++) {
normals[vertexOffset + i] = vertNormal;
}
}
}
// now that we have the data, create the QuadArray
QuadArray quads = new QuadArray(numVerts, QuadArray.COORDINATES
| QuadArray.NORMALS);
quads.setCoordinates(0, coords);
quads.setNormals(0, normals);
// create the shape
Shape3D shape = new Shape3D(quads, appearance);
// add it to the switch
gridSwitch.addChild(shape);
}
BranchGroup createSceneGraph() {
// Create the root of the branch graph
BranchGroup objRoot = new BranchGroup();
// Add the primitives to the scene
setupSpheres();
objRoot.addChild(spheresSwitch);
setupGrid();
objRoot.addChild(gridSwitch);
objRoot.addChild(lightGroup);
objRoot.addChild(bgSwitch);
objRoot.addChild(fogSwitch);
objRoot.addChild(soundSwitch);
KeyPrintBehavior key = new KeyPrintBehavior();
key.setSchedulingBounds(infiniteBounds);
objRoot.addChild(key);
return objRoot;
}
public EnvironmentExplorer(boolean isApplication, boolean blackAndWhite) {
if (blackAndWhite) {
colorMode = USE_BLACK_AND_WHITE;
}
this.isApplication = isApplication;
}
public EnvironmentExplorer(boolean isApplication) {
this(isApplication, false);
}
public EnvironmentExplorer() {
this(false, false);
}
public void init() {
// initialize the code base
try {
java.net.URL codeBase = getCodeBase();
codeBaseString = codeBase.toString();
} catch (Exception e) {
// probably running as an application, try the application
// code base
codeBaseString = "file:./";
}
if (colorMode == USE_COLOR) {
objColor = red;
} else {
objColor = white;
}
Container contentPane = getContentPane();
contentPane.setLayout(new BorderLayout());
GraphicsConfiguration config = SimpleUniverse
.getPreferredConfiguration();
canvas = new Canvas3D(config);
u = new SimpleUniverse(canvas);
if (isApplication) {
offScreenCanvas = new OffScreenCanvas3D(config, true);
// set the size of the off-screen canvas based on a scale
// of the on-screen size
Screen3D sOn = canvas.getScreen3D();
Screen3D sOff = offScreenCanvas.getScreen3D();
Dimension dim = sOn.getSize();
dim.width *= OFF_SCREEN_SCALE;
dim.height *= OFF_SCREEN_SCALE;
sOff.setSize(dim);
sOff.setPhysicalScreenWidth(sOn.getPhysicalScreenWidth()
* OFF_SCREEN_SCALE);
sOff.setPhysicalScreenHeight(sOn.getPhysicalScreenHeight()
* OFF_SCREEN_SCALE);
// attach the offscreen canvas to the view
u.getViewer().getView().addCanvas3D(offScreenCanvas);
}
contentPane.add("Center", canvas);
// setup the env nodes and their GUI elements
setupLights();
setupBackgrounds();
setupFogs();
setupSounds();
// Create a simple scene and attach it to the virtual universe
BranchGroup scene = createSceneGraph();
// set up sound
u.getViewer().createAudioDevice();
// get the view
view = u.getViewer().getView();
// Get the viewing platform
ViewingPlatform viewingPlatform = u.getViewingPlatform();
// Move the viewing platform back to enclose the -4 -> 4 range
double viewRadius = 4.0; // want to be able to see circle
// of viewRadius size around origin
// get the field of view
double fov = u.getViewer().getView().getFieldOfView();
// calc view distance to make circle view in fov
float viewDistance = (float) (viewRadius / Math.tan(fov / 2.0));
tmpVector.set(0.0f, 0.0f, viewDistance);// setup offset
tmpTrans.set(tmpVector); // set trans to translate
// move the view platform
viewingPlatform.getViewPlatformTransform().setTransform(tmpTrans);
// add an orbit behavior to move the viewing platform
OrbitBehavior orbit = new OrbitBehavior(canvas, OrbitBehavior.STOP_ZOOM);
orbit.setSchedulingBounds(infiniteBounds);
viewingPlatform.setViewPlatformBehavior(orbit);
u.addBranchGraph(scene);
contentPane.add("East", guiPanel());
}
// create a panel with a tabbed pane holding each of the edit panels
JPanel guiPanel() {
JPanel panel = new JPanel();
panel.setLayout(new BorderLayout());
tabbedPane = new JTabbedPane();
tabbedPane.addTab("Light", lightPanel());
tabbedPane.addTab("Background", backgroundPanel());
tabbedPane.addTab("Fog", fogPanel());
tabbedPane.addTab("Sound", soundPanel());
panel.add("Center", tabbedPane);
panel.add("South", configPanel());
return panel;
}
Box lightPanel() {
Box panel = new Box(BoxLayout.Y_AXIS);
// add the ambient light checkbox to the panel
JCheckBox ambientCheckBox = new JCheckBox("Ambient Light");
ambientCheckBox.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
JCheckBox checkbox = (JCheckBox) e.getSource();
lightAmbient.setEnable(checkbox.isSelected());
}
});
ambientCheckBox.setSelected(true);
panel.add(new LeftAlignComponent(ambientCheckBox));
String[] lightTypeValues = { "None", "Directional", "Positional",
"Spot" };
IntChooser lightTypeChooser = new IntChooser("Light Type:",
lightTypeValues);
lightTypeChooser.addIntListener(new IntListener() {
public void intChanged(IntEvent event) {
int value = event.getValue();
switch (value) {
case 0:
lightDirectional.setEnable(false);
lightPoint.setEnable(false);
lightSpot.setEnable(false);
break;
case 1:
lightDirectional.setEnable(true);
lightPoint.setEnable(false);
lightSpot.setEnable(false);
break;
case 2:
lightDirectional.setEnable(false);
lightPoint.setEnable(true);
lightSpot.setEnable(false);
break;
case 3:
lightDirectional.setEnable(false);
lightPoint.setEnable(false);
lightSpot.setEnable(true);
break;
}
}
});
lightTypeChooser.setValueByName("Directional");
panel.add(lightTypeChooser);
// Set up the sliders for the attenuation
// top row
panel.add(new LeftAlignComponent(new JLabel("Light attenuation:")));
FloatLabelJSlider constantSlider = new FloatLabelJSlider("Constant ",
0.1f, 0.0f, 3.0f, attenuation.x);
constantSlider.setMajorTickSpacing(1.0f);
constantSlider.setPaintTicks(true);
constantSlider.addFloatListener(new FloatListener() {
public void floatChanged(FloatEvent e) {
attenuation.x = e.getValue();
lightPoint.setAttenuation(attenuation);
lightSpot.setAttenuation(attenuation);
}
});
panel.add(constantSlider);
FloatLabelJSlider linearSlider = new FloatLabelJSlider("Linear ",
0.1f, 0.0f, 3.0f, attenuation.y);
linearSlider.setMajorTickSpacing(1.0f);
linearSlider.setPaintTicks(true);
linearSlider.addFloatListener(new FloatListener() {
public void floatChanged(FloatEvent e) {
attenuation.y = e.getValue();
lightPoint.setAttenuation(attenuation);
lightSpot.setAttenuation(attenuation);
}
});
panel.add(linearSlider);
FloatLabelJSlider quadradicSlider = new FloatLabelJSlider("Quadradic",
0.1f, 0.0f, 3.0f, attenuation.z);
quadradicSlider.setMajorTickSpacing(1.0f);
quadradicSlider.setPaintTicks(true);
quadradicSlider.addFloatListener(new FloatListener() {
public void floatChanged(FloatEvent e) {
attenuation.z = e.getValue();
lightPoint.setAttenuation(attenuation);
lightSpot.setAttenuation(attenuation);
}
});
panel.add(quadradicSlider);
// Set up the sliders for the attenuation
// top row
panel.add(new LeftAlignComponent(new JLabel("Spot light:")));
// spread angle is 0-180 degrees, no slider scaling
FloatLabelJSlider spotSpreadSlider = new FloatLabelJSlider(
"Spread Angle ", 1.0f, 0.0f, 180.0f, spotSpreadAngle);
spotSpreadSlider.addFloatListener(new FloatListener() {
public void floatChanged(FloatEvent e) {
spotSpreadAngle = e.getValue();
lightSpot.setSpreadAngle((float) Math
.toRadians(spotSpreadAngle));
}
});
panel.add(spotSpreadSlider);
// concentration angle is 0-128 degrees
FloatLabelJSlider spotConcentrationSlider = new FloatLabelJSlider(
"Concentration", 1.0f, 0.0f, 128.0f, spotConcentration);
spotConcentrationSlider.addFloatListener(new FloatListener() {
public void floatChanged(FloatEvent e) {
spotConcentration = e.getValue();
lightSpot.setConcentration(spotConcentration);
}
});
panel.add(spotConcentrationSlider);
return panel;
}
JPanel backgroundPanel() {
JPanel panel = new JPanel();
panel.add(bgChooser);
return panel;
}
JPanel fogPanel() {
JPanel panel = new JPanel();
panel.add(fogChooser);
return panel;
}
JPanel soundPanel() {
JPanel panel = new JPanel();
panel.add(soundChooser);
return panel;
}
JPanel configPanel() {
JPanel panel = new JPanel();
panel.setLayout(new GridLayout(1, 0));
String[] dataTypeValues = { "Spheres", "Grid", };
IntChooser dataTypeChooser = new IntChooser("Data:", dataTypeValues);
dataTypeChooser.addIntListener(new IntListener() {
public void intChanged(IntEvent event) {
int value = event.getValue();
switch (value) {
case 0:
spheresSwitch.setWhichChild(Switch.CHILD_ALL);
gridSwitch.setWhichChild(Switch.CHILD_NONE);
break;
case 1:
gridSwitch.setWhichChild(Switch.CHILD_ALL);
spheresSwitch.setWhichChild(Switch.CHILD_NONE);
break;
}
}
});
panel.add(dataTypeChooser);
if (isApplication) {
JButton snapButton = new JButton("Snap Image");
snapButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
Point loc = canvas.getLocationOnScreen();
offScreenCanvas.setOffScreenLocation(loc);
Dimension dim = canvas.getSize();
dim.width *= OFF_SCREEN_SCALE;
dim.height *= OFF_SCREEN_SCALE;
nf.setMinimumIntegerDigits(3);
offScreenCanvas.snapImageFile(outFileBase
+ nf.format(outFileSeq++), dim.width, dim.height);
nf.setMinimumIntegerDigits(0);
}
});
panel.add(snapButton);
}
return panel;
}
public void destroy() {
u.removeAllLocales();
}
// The following allows EnvironmentExplorer to be run as an application
// as well as an applet
//
public static void main(String[] args) {
boolean useBlackAndWhite = false;
for (int i = 0; i < args.length; i++) {
//System.out.println("args[" + i + "] = " + args[i]);
if (args[i].equals("-b")) {
System.out.println("Use Black And White");
useBlackAndWhite = true;
}
}
new MainFrame(new EnvironmentExplorer(true, useBlackAndWhite), 950, 600);
}
} class BackgroundTool implements Java3DExplorerConstants {
Switch bgSwitch;
IntChooser bgChooser;
BackgroundTool(String codeBaseString) {
bgSwitch = new Switch(Switch.CHILD_NONE);
bgSwitch.setCapability(Switch.ALLOW_SWITCH_WRITE);
// set up the dark grey BG color node
Background bgDarkGrey = new Background(darkGrey);
bgDarkGrey.setApplicationBounds(infiniteBounds);
bgSwitch.addChild(bgDarkGrey);
// set up the grey BG color node
Background bgGrey = new Background(grey);
bgGrey.setApplicationBounds(infiniteBounds);
bgSwitch.addChild(bgGrey);
// set up the light grey BG color node
Background bgLightGrey = new Background(lightGrey);
bgLightGrey.setApplicationBounds(infiniteBounds);
bgSwitch.addChild(bgLightGrey);
// set up the white BG color node
Background bgWhite = new Background(white);
bgWhite.setApplicationBounds(infiniteBounds);
bgSwitch.addChild(bgWhite);
// set up the blue BG color node
Background bgBlue = new Background(skyBlue);
bgBlue.setApplicationBounds(infiniteBounds);
bgSwitch.addChild(bgBlue);
// set up the image
java.net.URL bgImageURL = null;
try {
bgImageURL = new java.net.URL(codeBaseString + "bg.jpg");
} catch (java.net.MalformedURLException ex) {
System.out.println(ex.getMessage());
System.exit(1);
}
if (bgImageURL == null) { // application, try file URL
try {
bgImageURL = new java.net.URL("file:./bg.jpg");
} catch (java.net.MalformedURLException ex) {
System.out.println(ex.getMessage());
System.exit(1);
}
}
TextureLoader bgTexture = new TextureLoader(bgImageURL, null);
// Create a background with the static image
Background bgImage = new Background(bgTexture.getImage());
bgImage.setApplicationBounds(infiniteBounds);
bgSwitch.addChild(bgImage);
// create a background with the image mapped onto a sphere which
// will enclose the world
Background bgGeo = new Background();
bgGeo.setApplicationBounds(infiniteBounds);
BranchGroup bgGeoBG = new BranchGroup();
Appearance bgGeoApp = new Appearance();
bgGeoApp.setTexture(bgTexture.getTexture());
Sphere sphereObj = new Sphere(1.0f, Sphere.GENERATE_NORMALS
| Sphere.GENERATE_NORMALS_INWARD
| Sphere.GENERATE_TEXTURE_COORDS, 45, bgGeoApp);
bgGeoBG.addChild(sphereObj);
bgGeo.setGeometry(bgGeoBG);
bgSwitch.addChild(bgGeo);
// Create the chooser GUI
String[] bgNames = { "No Background (Black)", "Dark Grey", "Grey",
"Light Grey", "White", "Blue", "Sky Image", "Sky Geometry", };
int[] bgValues = { Switch.CHILD_NONE, 0, 1, 2, 3, 4, 5, 6 };
bgChooser = new IntChooser("Background:", bgNames, bgValues, 0);
bgChooser.addIntListener(new IntListener() {
public void intChanged(IntEvent event) {
int value = event.getValue();
bgSwitch.setWhichChild(value);
}
});
bgChooser.setValue(Switch.CHILD_NONE);
}
Switch getSwitch() {
return bgSwitch;
}
IntChooser getChooser() {
return bgChooser;
}
} interface Java3DExplorerConstants {
// colors
static Color3f black = new Color3f(0.0f, 0.0f, 0.0f);
static Color3f red = new Color3f(1.0f, 0.0f, 0.0f);
static Color3f green = new Color3f(0.0f, 1.0f, 0.0f);
static Color3f blue = new Color3f(0.0f, 0.0f, 1.0f);
static Color3f skyBlue = new Color3f(0.6f, 0.7f, 0.9f);
static Color3f cyan = new Color3f(0.0f, 1.0f, 1.0f);
static Color3f magenta = new Color3f(1.0f, 0.0f, 1.0f);
static Color3f yellow = new Color3f(1.0f, 1.0f, 0.0f);
static Color3f brightWhite = new Color3f(1.0f, 1.5f, 1.5f);
static Color3f white = new Color3f(1.0f, 1.0f, 1.0f);
static Color3f darkGrey = new Color3f(0.15f, 0.15f, 0.15f);
static Color3f medGrey = new Color3f(0.3f, 0.3f, 0.3f);
static Color3f grey = new Color3f(0.5f, 0.5f, 0.5f);
static Color3f lightGrey = new Color3f(0.75f, 0.75f, 0.75f);
// infinite bounding region, used to make env nodes active everywhere
BoundingSphere infiniteBounds = new BoundingSphere(new Point3d(),
Double.MAX_VALUE);
// common values
static final String nicestString = "NICEST";
static final String fastestString = "FASTEST";
static final String antiAliasString = "Anti-Aliasing";
static final String noneString = "NONE";
// light type constants
static int LIGHT_AMBIENT = 1;
static int LIGHT_DIRECTIONAL = 2;
static int LIGHT_POSITIONAL = 3;
static int LIGHT_SPOT = 4;
// screen capture constants
static final int USE_COLOR = 1;
static final int USE_BLACK_AND_WHITE = 2;
// number formatter
NumberFormat nf = NumberFormat.getInstance();
} class IntChooser extends JPanel implements Java3DExplorerConstants {
JComboBox combo;
String[] choiceNames;
int[] choiceValues;
int current;
Vector listeners = new Vector();
IntChooser(String name, String[] initChoiceNames, int[] initChoiceValues,
int initValue) {
if ((initChoiceValues != null)
&& (initChoiceNames.length != initChoiceValues.length)) {
throw new IllegalArgumentException(
"Name and Value arrays must have the same length");
}
choiceNames = new String[initChoiceNames.length];
choiceValues = new int[initChoiceNames.length];
System
.arraycopy(initChoiceNames, 0, choiceNames, 0,
choiceNames.length);
if (initChoiceValues != null) {
System.arraycopy(initChoiceValues, 0, choiceValues, 0,
choiceNames.length);
} else {
for (int i = 0; i < initChoiceNames.length; i++) {
choiceValues[i] = i;
}
}
// Create the combo box, select the init value
combo = new JComboBox(choiceNames);
combo.setSelectedIndex(current);
combo.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
JComboBox cb = (JComboBox) e.getSource();
int index = cb.getSelectedIndex();
setValueIndex(index);
}
});
// set the initial value
current = 0;
setValue(initValue);
// layout to align left
setLayout(new BorderLayout());
Box box = new Box(BoxLayout.X_AXIS);
add(box, BorderLayout.WEST);
box.add(new JLabel(name));
box.add(combo);
}
IntChooser(String name, String[] initChoiceNames, int[] initChoiceValues) {
this(name, initChoiceNames, initChoiceValues, initChoiceValues[0]);
}
IntChooser(String name, String[] initChoiceNames, int initValue) {
this(name, initChoiceNames, null, initValue);
}
IntChooser(String name, String[] initChoiceNames) {
this(name, initChoiceNames, null, 0);
}
public void addIntListener(IntListener listener) {
listeners.add(listener);
}
public void removeIntListener(IntListener listener) {
listeners.remove(listener);
}
public void setValueByName(String newName) {
boolean found = false;
int newIndex = 0;
for (int i = 0; (!found) && (i < choiceNames.length); i++) {
if (newName.equals(choiceNames[i])) {
newIndex = i;
found = true;
}
}
if (found) {
setValueIndex(newIndex);
}
}
public void setValue(int newValue) {
boolean found = false;
int newIndex = 0;
for (int i = 0; (!found) && (i < choiceValues.length); i++) {
if (newValue == choiceValues[i]) {
newIndex = i;
found = true;
}
}
if (found) {
setValueIndex(newIndex);
}
}
public int getValue() {
return choiceValues[current];
}
public String getValueName() {
return choiceNames[current];
}
public void setValueIndex(int newIndex) {
boolean changed = (newIndex != current);
current = newIndex;
if (changed) {
combo.setSelectedIndex(current);
valueChanged();
}
}
private void valueChanged() {
// notify the listeners
IntEvent event = new IntEvent(this, choiceValues[current]);
for (Enumeration e = listeners.elements(); e.hasMoreElements();) {
IntListener listener = (IntListener) e.nextElement();
listener.intChanged(event);
}
}
} class OffScreenCanvas3D extends Canvas3D {
OffScreenCanvas3D(GraphicsConfiguration graphicsConfiguration,
boolean offScreen) {
super(graphicsConfiguration, offScreen);
}
private BufferedImage doRender(int width, int height) {
BufferedImage bImage = new BufferedImage(width, height,
BufferedImage.TYPE_INT_RGB);
ImageComponent2D buffer = new ImageComponent2D(
ImageComponent.FORMAT_RGB, bImage);
//buffer.setYUp(true);
setOffScreenBuffer(buffer);
renderOffScreenBuffer();
waitForOffScreenRendering();
bImage = getOffScreenBuffer().getImage();
return bImage;
}
void snapImageFile(String filename, int width, int height) {
BufferedImage bImage = doRender(width, height);
/*
* JAI: RenderedImage fImage = JAI.create("format", bImage,
* DataBuffer.TYPE_BYTE); JAI.create("filestore", fImage, filename +
* ".tif", "tiff", null);
*/
/* No JAI: */
try {
FileOutputStream fos = new FileOutputStream(filename + ".jpg");
BufferedOutputStream bos = new BufferedOutputStream(fos);
JPEGImageEncoder jie = JPEGCodec.createJPEGEncoder(bos);
JPEGEncodeParam param = jie.getDefaultJPEGEncodeParam(bImage);
param.setQuality(1.0f, true);
jie.setJPEGEncodeParam(param);
jie.encode(bImage);
bos.flush();
fos.close();
} catch (Exception e) {
System.out.println(e);
}
}
} interface IntListener extends EventListener {
void intChanged(IntEvent e);
} class IntEvent extends EventObject {
int value;
IntEvent(Object source, int newValue) {
super(source);
value = newValue;
}
int getValue() {
return value;
}
} class KeyPrintBehavior extends Behavior {
WakeupCondition wakeup = new WakeupOnAWTEvent(KeyEvent.KEY_PRESSED);
public void initialize() {
wakeupOn(wakeup);
}
public void processStimulus(Enumeration criteria) {
while (criteria.hasMoreElements()) {
wakeup = (WakeupCriterion) criteria.nextElement();
if (wakeup instanceof WakeupOnAWTEvent) {
AWTEvent[] evt = ((WakeupOnAWTEvent) wakeup).getAWTEvent();
for (int i = 0; i < evt.length; i++) {
if (evt[i] instanceof KeyEvent) {
KeyEvent keyEvt = (KeyEvent) evt[i];
System.out.println("Key pressed: ""
+ keyEvt.getKeyChar() + """);
}
}
}
}
// set the wakeup so we"ll get the next event
wakeupOn(wakeup);
}
} class LeftAlignComponent extends JPanel {
LeftAlignComponent(Component c) {
setLayout(new BorderLayout());
add(c, BorderLayout.WEST);
}
} class FloatLabelJSlider extends JPanel implements ChangeListener,
Java3DExplorerConstants {
JSlider slider;
JLabel valueLabel;
Vector listeners = new Vector();
float min, max, resolution, current, scale;
int minInt, maxInt, curInt;;
int intDigits, fractDigits;
float minResolution = 0.001f;
// default slider with name, resolution = 0.1, min = 0.0, max = 1.0 inital
// 0.5
FloatLabelJSlider(String name) {
this(name, 0.1f, 0.0f, 1.0f, 0.5f);
}
FloatLabelJSlider(String name, float resolution, float min, float max,
float current) {
this.resolution = resolution;
this.min = min;
this.max = max;
this.current = current;
if (resolution < minResolution) {
resolution = minResolution;
}
// round scale to nearest integer fraction. i.e. 0.3 => 1/3 = 0.33
scale = (float) Math.round(1.0f / resolution);
resolution = 1.0f / scale;
// get the integer versions of max, min, current
minInt = Math.round(min * scale);
maxInt = Math.round(max * scale);
curInt = Math.round(current * scale);
// sliders use integers, so scale our floating point value by "scale"
// to make each slider "notch" be "resolution". We will scale the
// value down by "scale" when we get the event.
slider = new JSlider(JSlider.HORIZONTAL, minInt, maxInt, curInt);
slider.addChangeListener(this);
valueLabel = new JLabel(" ");
// set the initial value label
setLabelString();
// add min and max labels to the slider
Hashtable labelTable = new Hashtable();
labelTable.put(new Integer(minInt), new JLabel(nf.format(min)));
labelTable.put(new Integer(maxInt), new JLabel(nf.format(max)));
slider.setLabelTable(labelTable);
slider.setPaintLabels(true);
/* layout to align left */
setLayout(new BorderLayout());
Box box = new Box(BoxLayout.X_AXIS);
add(box, BorderLayout.WEST);
box.add(new JLabel(name));
box.add(slider);
box.add(valueLabel);
}
public void setMinorTickSpacing(float spacing) {
int intSpacing = Math.round(spacing * scale);
slider.setMinorTickSpacing(intSpacing);
}
public void setMajorTickSpacing(float spacing) {
int intSpacing = Math.round(spacing * scale);
slider.setMajorTickSpacing(intSpacing);
}
public void setPaintTicks(boolean paint) {
slider.setPaintTicks(paint);
}
public void addFloatListener(FloatListener listener) {
listeners.add(listener);
}
public void removeFloatListener(FloatListener listener) {
listeners.remove(listener);
}
public void stateChanged(ChangeEvent e) {
JSlider source = (JSlider) e.getSource();
// get the event type, set the corresponding value.
// Sliders use integers, handle floating point values by scaling the
// values by "scale" to allow settings at "resolution" intervals.
// Divide by "scale" to get back to the real value.
curInt = source.getValue();
current = curInt / scale;
valueChanged();
}
public void setValue(float newValue) {
boolean changed = (newValue != current);
current = newValue;
if (changed) {
valueChanged();
}
}
private void valueChanged() {
// update the label
setLabelString();
// notify the listeners
FloatEvent event = new FloatEvent(this, current);
for (Enumeration e = listeners.elements(); e.hasMoreElements();) {
FloatListener listener = (FloatListener) e.nextElement();
listener.floatChanged(event);
}
}
void setLabelString() {
// Need to muck around to try to make sure that the width of the label
// is wide enough for the largest value. Pad the string
// be large enough to hold the largest value.
int pad = 5; // fudge to make up for variable width fonts
float maxVal = Math.max(Math.abs(min), Math.abs(max));
intDigits = Math.round((float) (Math.log(maxVal) / Math.log(10))) + pad;
if (min < 0) {
intDigits++; // add one for the "-"
}
// fractDigits is num digits of resolution for fraction. Use base 10 log
// of scale, rounded up, + 2.
fractDigits = (int) Math.ceil((Math.log(scale) / Math.log(10)));
nf.setMinimumFractionDigits(fractDigits);
nf.setMaximumFractionDigits(fractDigits);
String value = nf.format(current);
while (value.length() < (intDigits + fractDigits)) {
value = value + " ";
}
valueLabel.setText(value);
}
} class FloatEvent extends EventObject {
float value;
FloatEvent(Object source, float newValue) {
super(source);
value = newValue;
}
float getValue() {
return value;
}
} interface FloatListener extends EventListener {
void floatChanged(FloatEvent e);
}
</source>
Frames per second counter
<source lang="java">
/*
* @(#)FPSCounterDemo.java 1.3 02/10/21 13:38:59 * * Copyright (c) 1996-2002 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: * * - Redistributions 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 AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES * SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR * DISTRIBUTING THE 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 SOFTWARE, * EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. * * You acknowledge that Software is not designed,licensed or intended * for use in the design, construction, operation or maintenance of * any nuclear facility. */
import java.applet.Applet; import java.awt.BorderLayout; import java.awt.GraphicsConfiguration; import java.text.NumberFormat; import javax.media.j3d.Alpha; import javax.media.j3d.Behavior; import javax.media.j3d.BoundingSphere; import javax.media.j3d.BranchGroup; import javax.media.j3d.Canvas3D; import javax.media.j3d.RotationInterpolator; import javax.media.j3d.Transform3D; import javax.media.j3d.TransformGroup; import javax.media.j3d.WakeupOnElapsedFrames; import javax.swing.JOptionPane; import javax.vecmath.Point3d; import com.sun.j3d.utils.applet.JMainFrame; import com.sun.j3d.utils.geometry.ColorCube; import com.sun.j3d.utils.universe.SimpleUniverse; /**
* 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.rupile();
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,
"\nThis program measures the number of frames rendered per second.\nNote that the frame rate is limited by the refresh rate of the monitor.\nTo get the true frame rate you need to disable vertical retrace.\n\nOn Windows(tm) you do this through the Control Panel.\n\nOn Unix set the environment variable OGL_NO_VBLANK\n(i.e. type \"setenv OGL_NO_VBLANK\" at the command prompt)",
"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 HotSpot TM 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 shortened to one character. All the value arguments take a number. The arguments accepted are :\n warmupTime : Specifies amount of time the FPSCounter should wait for the HotSpot(tm) VM to perform initial optimizations. Specified in milliseconds\n loopCount : Specifies the number of sampling intervals over which the FPSCounter should calculate the aggregate and average frame rate. Specified as a count\n 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.\n help : Prints this message.");
}
}
}
}
} /**
* This behavior calculates the frame rate and average frame rate of a Java3D * application. The behavior sets itself up to wakeup every time a new frame is * rendered. **
* The HotSpot(tm) compiler performs some initial optimizations before running * at optimal speed. Frame rates measured during this warmup period will be * inaccurate and not indicative of the true performance of the the application. * Therefore, before beginning the frame rate computation, the frame counter * waits for a fixed time period to allow the HotSpot(tm) compiler to * stablilize. * * <p> * To avoid computing the frame rate too frequently (which would also hamper * rendering performance), the frame counter only computes the frame rate at * fixed time intervals. The default sampling duration is 10 seconds. After * waiting for the warmup period, the frame counter needs to calibrate itself. * It computes the number of frames rendered during the sampling period. After * doing this calibration, the frame counter reports the frame rate after these * many frames are rendered. It also reports the average frame rate after a * fixed number of sampling intervals (the default is 5). * * <p> * The frame counter can be set up to run for a fixed number of sampling * intervals or to run indefinitely. The defaultis to run indefinitely. */ class FPSCounter extends Behavior { // Wakeup condition - framecount = 0 -> wakeup on every frame WakeupOnElapsedFrames FPSwakeup = new WakeupOnElapsedFrames(0); // Do calibration for these many millisec private static final long testduration = 1000; // Report frame rate after every sampleduration milliseconds private static final long sampleduration = 10000; // Flag to indicate that it is time to (re)calibrate private boolean doCalibration = true; // Flag to indicate the counter has started private boolean startup = true; // Wait for HotSpot compiler to perform optimizations private boolean warmup = true; // Time to wait for HotSpot compiler to stabilize (in milliseconds) private long warmupTime = 20000; // Counter for number of frames rendered private int numframes = 0; // Report frame rate after maxframe number of frames have been rendered private int maxframes = 1; // Variables to keep track of elapsed time private long startuptime = 0; private long currtime = 0; private long lasttime = 0; private long deltatime; // Run indefinitely or for a fixed duration private boolean finiteLoop = false; // No. of sampling intervals to run for if not running indefinitely private long maxLoops; // No. of sampling intervals run for so far private long numLoops = 0; // Total number of frames rendered so far private int sumFrames = 0; // Total time since last reporting of average frame rate private long sumTimes = 0; // Counts no. of sampling intervals private int loop = 0; // Average frame rate is reported after loopCount number of // sampling intervals private int loopCount = 5; private double sumFps = 0.0; private String symbol[] = { "\\", "|", "|", "/", "-", "|", "-" }; int index = 0; private NumberFormat nf = null; public FPSCounter() { setEnable(true); nf = NumberFormat.getNumberInstance(); } // Called to init the behavior public void initialize() { // Set the trigger for the behavior to wakeup on every frame rendered wakeupOn(FPSwakeup); } // Called every time the behavior is activated public void processStimulus(java.util.Enumeration critera) { // Apply calibration algorithm to determine number of frames to // wait before computing frames per second. // sampleduration = 10000 -> to run test, pass for 10 seconds. if (doCalibration) { // start calibration if (startup) { // Record time at which the behavior was first invoked startuptime = System.currentTimeMillis(); startup = false; } else if (warmup) { // Wait for the system to stabilize. System.out.print("\rFPSCounter warming up..." + symbol[(index++) % symbol.length]); currtime = System.currentTimeMillis(); deltatime = currtime - startuptime; if (deltatime > warmupTime) { // Done waiting for warmup warmup = false; lasttime = System.currentTimeMillis(); System.out.println("\rFPSCounter warming up...Done"); } } else { numframes += 1; // Wait till at least maxframe no. of frames have been rendered if (numframes >= maxframes) { currtime = System.currentTimeMillis(); deltatime = currtime - lasttime; // Do the calibration for testduration no. of millisecs if (deltatime > testduration) { // Compute total no. of frames rendered so far in the // current sampling duration maxframes = (int) Math .ceil((double) numframes * ((double) sampleduration / (double) deltatime)); // Done with calibration doCalibration = false; // reset the value for the measurement numframes = 0; lasttime = System.currentTimeMillis(); } else { // Need to run the calibration routine for some more // time. Increase the no. of frames to be rendered maxframes *= 2; } } } } else { // do the measurement numframes += 1; if (numframes >= maxframes) { currtime = System.currentTimeMillis(); deltatime = currtime - lasttime; // time is in millisec, so multiply by 1000 to get frames/sec double fps = (double) numframes / ((double) deltatime / 1000.0); System.out.println("Frame Rate : \n\tNo. of frames : " + numframes + "\n\tTime : " + ((double) deltatime / 1000.0) + " sec." + "\n\tFrames/sec : " + nf.format(fps)); // Calculate average frame rate sumFrames += numframes; sumTimes += deltatime; sumFps += fps; loop++; if (loop >= loopCount) { double avgFps = (double) sumFrames * 1000.0 / (double) sumTimes; double ravgFps = sumFps / (double) loopCount; System.out.println("Aggregate frame rate " + nf.format(avgFps) + " frames/sec"); System.out.println("Average frame rate " + nf.format(ravgFps) + " frames/sec"); numLoops++; if (finiteLoop && numLoops >= maxLoops) { System.out .println("************** The End **************\n"); setEnable(false); } loop = 0; sumFps = 0; } numframes = 0; lasttime = System.currentTimeMillis(); ; } } // Set the trigger for the behavior wakeupOn(FPSwakeup); } /** * The frame counter waits for some time before computing the frame rate. * This allows the HotSpot compiler to perform initial optimizations. The * amount of time to wait for is set by this method. The default is 20000 * (20 sec) * * @param Amount * of time to wait for before computing frame rate (specified in * milliseconds) */ public void setWarmupTime(long wt) { warmupTime = wt; } /** * Sets the number of sampling intervals to wait for before computing the * average frame rate. The default is 5. * * @param No. * of sampling intervals over which to compute frame rate. A * value of 0 implies the average frame rate is computed over one * sampling interval */ public void setLoopCount(int lc) { loopCount = lc; } /** * This method sets the number of sampling intervals for which the frame * counter should run. * * @param No. * of sampling intervals to run for */ public void setMaxLoops(int ml) { maxLoops = ml; finiteLoop = true; } } </source>
Java 3D and VRML Package Tree Printer
<source lang="java">
/*
* @(#)TreePrinter.java 1.2 01/08/01 11:02:27 * * ************************************************************** "Copyright (c) * 2001 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: * * -Redistributions 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 AND ITS LICENSORS SHALL NOT BE * LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING * OR DISTRIBUTING THE 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 SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY * OF SUCH DAMAGES. * * You acknowledge that Software is not designed,licensed or intended for use in * the design, construction, operation or maintenance of any nuclear facility." * * *************************************************************************** */
import java.io.PrintStream; import java.util.Enumeration; import java.util.HashSet; import java.util.Iterator; import java.util.Set; import javax.media.j3d.CapabilityNotSetException; import javax.media.j3d.Link; import javax.media.j3d.Locale; import javax.media.j3d.SceneGraphObject; import javax.media.j3d.SharedGroup; import javax.media.j3d.Transform3D; import javax.media.j3d.TransformGroup; public class TreePrinter {
PrintStream printStream;
String j3dPkg = new String("javax.media.j3d.");
String v97Pkg = new String("com.sun.j3d.loaders.vrml97.impl.");
public void print(PrintStream s, Locale l) {
printStream = s;
HashSet sharedGroups = new HashSet();
printTree(l, 0, sharedGroups);
Iterator iterator = sharedGroups.iterator();
while (iterator.hasNext()) {
SharedGroup sg = (SharedGroup) iterator.next();
print(s, sg);
}
}
public void print(Locale l) {
print(System.out, l);
}
private void printTree(Locale l, int graphDepth, Set sharedGroups) {
printNode(l, 0, sharedGroups);
try {
Enumeration e = l.getAllBranchGraphs();
while (e.hasMoreElements()) {
Object o = e.nextElement();
if (o instanceof Locale)
printTree((Locale) o, graphDepth + 1, sharedGroups);
else if (o instanceof SceneGraphObject)
printTree((SceneGraphObject) o, graphDepth + 1,
sharedGroups);
else
printStream.println(o + " unknown and in tree");
}
} catch (CapabilityNotSetException e) {
printStream.println("No capability to read children");
}
}
public void print(PrintStream s, SceneGraphObject sgo) {
printStream = s;
HashSet sharedGroups = new HashSet();
if (sgo == null) {
printStream.println("null");
} else {
printTree(sgo, 0, sharedGroups);
Iterator iterator = sharedGroups.iterator();
while (iterator.hasNext()) {
SharedGroup sg = (SharedGroup) iterator.next();
print(s, sg);
}
}
}
public void print(SceneGraphObject sgo) {
print(System.out, sgo);
}
private void printTree(SceneGraphObject sgo, int graphDepth,
Set sharedGroups) {
printNode(sgo, graphDepth, sharedGroups);
if (sgo instanceof javax.media.j3d.Group) {
try {
Enumeration e = ((javax.media.j3d.Group) sgo).getAllChildren();
while (e.hasMoreElements()) {
printTree((SceneGraphObject) (e.nextElement()),
graphDepth + 1, sharedGroups);
}
} catch (CapabilityNotSetException e) {
// Can"t read handled below
}
}
}
private String nodeString(Object o) {
String objString = o.toString();
if (objString.startsWith(j3dPkg)) {
objString = objString.substring(j3dPkg.length());
}
if (objString.startsWith(v97Pkg)) {
objString = objString.substring(v97Pkg.length());
}
return objString;
}
private void printNode(Object o, int indent, Set sharedGroups) {
for (int i = 0; i < indent; i++)
printStream.print(">");
printStream.print(nodeString(o) + ": ");
if (o instanceof SceneGraphObject) {
SceneGraphObject sgo = (SceneGraphObject) o;
int capBits = 0;
// TODO: how to make sure we always check all the valid bits?
for (int i = 0; i < 64; i++) {
if (sgo.getCapability(i)) {
capBits |= 1 << i;
}
}
printStream.print("capBits:Ox" + Integer.toHexString(capBits));
if (o instanceof javax.media.j3d.Group) {
javax.media.j3d.Group g = (javax.media.j3d.Group) o;
int numChildren = 0;
try {
numChildren = g.numChildren();
} catch (CapabilityNotSetException e) {
//anyone who is using treePrinter, is debugging, so it is
//alright to blindly allow read. you should first detach
//browser.curScene, print the tree, then add it back to
//browser.locale when finished.
g.setCapability(javax.media.j3d.Group.ALLOW_CHILDREN_READ);
numChildren = g.numChildren();
//System.out.println("Can"t read children on group");
//return;
}
printStream.print(" children:" + numChildren);
if (o instanceof TransformGroup) {
Transform3D transform = new Transform3D();
Transform3D identity = new Transform3D();
TransformGroup t = (TransformGroup) o;
t.getTransform(transform);
// TODO: use getBestType() when implemented
if (transform.equals(identity)) {
printStream.print(" xform:IDENTITY ");
} else {
printStream.print(" xform:NON-IDENTITY ");
}
}
} else if (o instanceof Link) {
Link l = (Link) o;
SharedGroup sg = l.getSharedGroup();
printStream.print(" sg:" + nodeString(sg));
sharedGroups.add(sg);
} else {
printStream.print(": leaf");
}
}
printStream.println();
}
}
</source>
Package Info
<source lang="java">
/*
* @(#)PackageInfo.java 1.11 02/04/01 15:03:56 * * Copyright (c) 1996-2002 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: - * Redistributions 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 AND ITS LICENSORS SHALL NOT BE * LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING * OR DISTRIBUTING THE 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 SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY * OF SUCH DAMAGES. * * You acknowledge that Software is not designed,licensed or intended for use in * the design, construction, operation or maintenance of any nuclear facility. */
public class PackageInfo {
public PackageInfo() {
ClassLoader classLoader = getClass().getClassLoader();
pkgInfo(classLoader, "javax.vecmath", "Point3d");
pkgInfo(classLoader, "javax.media.j3d", "SceneGraphObject");
pkgInfo(classLoader, "com.sun.j3d.utils.universe", "SimpleUniverse");
//pkgInfo(classLoader, "com.sun.j3d.loaders.vrml97", "VrmlLoader");
}
static void pkgInfo(ClassLoader classLoader, String pkgName,
String className) {
try {
classLoader.loadClass(pkgName + "." + className);
Package p = Package.getPackage(pkgName);
if (p == null) {
System.out.println("WARNING: Package.getPackage(" + pkgName
+ ") is null");
} else {
System.out.println(p);
System.out.println("Specification Title = "
+ p.getSpecificationTitle());
System.out.println("Specification Vendor = "
+ p.getSpecificationVendor());
System.out.println("Specification Version = "
+ p.getSpecificationVersion());
System.out.println("Implementation Vendor = "
+ p.getImplementationVendor());
System.out.println("Implementation Version = "
+ p.getImplementationVersion());
}
} catch (ClassNotFoundException e) {
System.out.println("Unable to load " + pkgName);
}
System.out.println();
}
public static void main(String[] args) {
new PackageInfo();
}
}
</source>
Query Properties
<source lang="java">
/*
* @(#)QueryProperties.java 1.11 02/05/29 16:06:47 * * Copyright (c) 1996-2002 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: * - Redistributions 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 AND ITS LICENSORS SHALL NOT BE * LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING * OR DISTRIBUTING THE 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 SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY * OF SUCH DAMAGES. * * You acknowledge that Software is not designed,licensed or intended for use in * the design, construction, operation or maintenance of any nuclear facility. */
import java.awt.GraphicsConfiguration; import java.awt.GraphicsEnvironment; import java.util.Map; import javax.media.j3d.Canvas3D; import javax.media.j3d.GraphicsConfigTemplate3D; import javax.media.j3d.VirtualUniverse; public class QueryProperties {
public static void main(String[] args) {
VirtualUniverse vu = new VirtualUniverse();
Map vuMap = vu.getProperties();
System.out.println("version = " + vuMap.get("j3d.version"));
System.out.println("vendor = " + vuMap.get("j3d.vendor"));
System.out.println("specification.version = "
+ vuMap.get("j3d.specification.version"));
System.out.println("specification.vendor = "
+ vuMap.get("j3d.specification.vendor"));
System.out.println("renderer = " + vuMap.get("j3d.renderer") + "\n");
GraphicsConfigTemplate3D template = new GraphicsConfigTemplate3D();
/*
* We need to set this to force choosing a pixel format that support the
* canvas.
*/
template.setStereo(template.PREFERRED);
template.setSceneAntialiasing(template.PREFERRED);
GraphicsConfiguration config = GraphicsEnvironment
.getLocalGraphicsEnvironment().getDefaultScreenDevice()
.getBestConfiguration(template);
Map c3dMap = new Canvas3D(config).queryProperties();
System.out
.println("Renderer version = " + c3dMap.get("native.version"));
System.out.println("doubleBufferAvailable = "
+ c3dMap.get("doubleBufferAvailable"));
System.out
.println("stereoAvailable = " + c3dMap.get("stereoAvailable"));
System.out.println("sceneAntialiasingAvailable = "
+ c3dMap.get("sceneAntialiasingAvailable"));
System.out.println("sceneAntialiasingNumPasses = "
+ c3dMap.get("sceneAntialiasingNumPasses"));
System.out.println("textureColorTableSize = "
+ c3dMap.get("textureColorTableSize"));
System.out.println("textureEnvCombineAvailable = "
+ c3dMap.get("textureEnvCombineAvailable"));
System.out.println("textureCombineDot3Available = "
+ c3dMap.get("textureCombineDot3Available"));
System.out.println("textureCombineSubtractAvailable = "
+ c3dMap.get("textureCombineSubtractAvailable"));
System.out.println("texture3DAvailable = "
+ c3dMap.get("texture3DAvailable"));
System.out.println("textureCubeMapAvailable = "
+ c3dMap.get("textureCubeMapAvailable"));
System.out.println("textureSharpenAvailable = "
+ c3dMap.get("textureSharpenAvailable"));
System.out.println("textureDetailAvailable = "
+ c3dMap.get("textureDetailAvailable"));
System.out.println("textureFilter4Available = "
+ c3dMap.get("textureFilter4Available"));
System.out.println("textureAnisotropicFilterDegreeMax = "
+ c3dMap.get("textureAnisotropicFilterDegreeMax"));
System.out.println("textureBoundaryWidthMax = "
+ c3dMap.get("textureBoundaryWidthMax"));
System.out
.println("textureWidthMax = " + c3dMap.get("textureWidthMax"));
System.out.println("textureHeightMax = "
+ c3dMap.get("textureHeightMax"));
System.out.println("textureLodOffsetAvailable = "
+ c3dMap.get("textureLodOffsetAvailable"));
System.out.println("textureLodRangeAvailable = "
+ c3dMap.get("textureLodRangeAvailable"));
System.out.println("textureUnitStateMax = "
+ c3dMap.get("textureUnitStateMax"));
System.out.println("compressedGeometry.majorVersionNumber = "
+ c3dMap.get("compressedGeometry.majorVersionNumber"));
System.out.println("compressedGeometry.minorVersionNumber = "
+ c3dMap.get("compressedGeometry.minorVersionNumber"));
System.out.println("compressedGeometry.minorMinorVersionNumber = "
+ c3dMap.get("compressedGeometry.minorMinorVersionNumber"));
System.exit(0);
}
}
</source>
Timer Test
<source lang="java">
/*
* @(#)TimerTest.java 1.7 02/04/11 14:29:51 * * Copyright (c) 1996-2002 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: * - Redistributions 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 AND ITS LICENSORS SHALL NOT BE * LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING * OR DISTRIBUTING THE 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 SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY * OF SUCH DAMAGES. * * You acknowledge that Software is not designed,licensed or intended for use in * the design, construction, operation or maintenance of any nuclear facility. */
import java.applet.Applet; import java.awt.Panel; import java.awt.TextArea; import com.sun.j3d.utils.applet.MainFrame; import com.sun.j3d.utils.timer.J3DTimer; public class TimerTest extends Applet {
long[] ticks = new long[10];
long[] sysTime = new long[ticks.length];
public TimerTest() {
}
public void init() {
Panel panel = new Panel();
String header = new String(
" J3D Timer System Timer\n");
TextArea textArea = new TextArea(header, 12, 35,
TextArea.SCROLLBARS_NONE);
panel.add(textArea);
this.add(panel);
for (int i = 0; i < ticks.length; i++) {
ticks[i] = J3DTimer.getValue();
sysTime[i] = System.currentTimeMillis();
}
for (int i = 0; i < ticks.length; i++)
//System.out.println("tick "+ticks[i]+" "+sysTime[i] );
textArea.append("tick " + ticks[i] + " " + sysTime[i] + "\n");
//System.out.println("Resolution "+J3DTimer.getResolution() );
textArea.append("Resolution " + J3DTimer.getResolution() + "\n");
}
public static void main(String args[]) {
new MainFrame(new TimerTest(), 380, 256);
}
}
</source>
