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Java Source | 2003-08-08 | 8.2 KB | 260 lines |
- /*
- * @(#)PureImmediateStereo.java 1.4 02/10/21 13:53:11
- *
- * 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.*;
- import java.util.*;
- import java.awt.event.*;
- import com.sun.j3d.utils.applet.MainFrame;
- import com.sun.j3d.utils.universe.*;
- import com.sun.j3d.utils.geometry.*;
- import javax.media.j3d.*;
- import javax.vecmath.*;
-
- /**
- * Pure immediate mode stereo example program for stereo. In pure
- * immediate mode, the renderer must be stopped on the Canvas being
- * rendered into. In our example, this is done immediately after the
- * canvas is created. A separate thread is started up to do the
- * immediate mode rendering.
- */
- public class PureImmediateStereo extends Applet implements Runnable {
-
- // Set this to true when the graphics card use shared z buffer
- // in stereo mode.
- public static String defaultSharedStereoZbuffer = Boolean.TRUE.toString();
-
- private boolean sharedStereoZbuffer;
- private boolean stereoSupport;
- private Canvas3D canvas;
- private GraphicsContext3D gc;
- private Shape3D leftConeBody, rightConeBody;
- private Shape3D leftConeCap, rightConeCap;
- private Transform3D cmt = new Transform3D();
- private Vector3f leftTrans, rightTrans;
-
- // One rotation (2*PI radians) every 6 seconds
- private Alpha rotAlpha = new Alpha(-1, 6000);
- private SimpleUniverse u = null;
- private double angle;
-
- // Compute data which is common for both
- // left and right eye
- void computeSharedData() {
- // Compute angle of rotation based on alpha value
- angle = rotAlpha.value() * 2.0*Math.PI;
- cmt.rotY(angle);
- }
-
- // Render the geometry in right eye
- void renderLeft() {
- cmt.setTranslation(leftTrans);
- gc.setModelTransform(cmt);
-
- if (sharedStereoZbuffer) {
- // Graphics card shared same z buffer in stereo mode,
- // in this case we have to explicitly clearing both
- // frame buffers.
- gc.clear();
- }
- gc.draw(leftConeBody);
- gc.draw(leftConeCap);
- }
-
- // Render the geometry for right eye
- void renderRight() {
- cmt.setTranslation(rightTrans);
- gc.setModelTransform(cmt);
-
- if (sharedStereoZbuffer) {
- // Graphics card shared same z buffer in stereo mode,
- // in this case we have to explicitly clearing both
- // frame buffers.
- gc.clear();
- }
- gc.draw(rightConeBody);
- gc.draw(rightConeCap);
- }
-
- //
- // Run method for our immediate mode rendering thread.
- //
- public void run() {
- // Set up Graphics context
- gc = canvas.getGraphicsContext3D();
-
- // We always need to set this for PureImmediate
- // stereo mode
- gc.setBufferOverride(true);
-
- Color3f lightColor = new Color3f(1, 1, 1);
- Vector3f lightDir = new Vector3f(0, 0, -1);
- DirectionalLight light = new DirectionalLight(lightColor,
- lightDir);
-
- gc.addLight(light);
-
- Appearance redApp = new Appearance();
- Appearance greenApp = new Appearance();
- Color3f ambientColor = new Color3f(0, 0, 0);
- Color3f emissiveColor = new Color3f(0, 0, 0);
- Color3f diffuseColor = new Color3f(1, 0, 0);
- Color3f specularColor = new Color3f(1, 1, 1);
- redApp.setMaterial(new Material(ambientColor, emissiveColor,
- diffuseColor, specularColor, 5));
- diffuseColor = new Color3f(0, 1, 0);
-
- greenApp.setMaterial(new Material(ambientColor, emissiveColor,
- diffuseColor, specularColor, 5));
-
- // Set up geometry
- Cone leftCone = new Cone(0.4f, 0.6f,
- Primitive.GENERATE_NORMALS, redApp);
- Cone rightCone = new Cone(0.4f, 0.6f,
- Primitive.GENERATE_NORMALS, greenApp);
- leftConeBody = leftCone.getShape(Cone.BODY);
- leftConeCap = leftCone.getShape(Cone.CAP);
-
- rightConeBody = rightCone.getShape(Cone.BODY);
- rightConeCap = rightCone.getShape(Cone.CAP);
- leftTrans = new Vector3f(-0.6f, 0, 0);
- rightTrans = new Vector3f(0.6f, 0, 0);
-
-
- while (true) {
- // compute data which is can be used
- // for both left and right eye
- computeSharedData();
-
- if (stereoSupport) {
- if (!sharedStereoZbuffer) {
- gc.setStereoMode(GraphicsContext3D.STEREO_BOTH);
- // This clear both left and right buffers, we
- // must set STEREO_BOTH before it. Otherwise
- // it only clear LEFT or RIGHT buffer unless
- // this is invoke twice for each buffer.
- gc.clear();
- }
-
- gc.setStereoMode(GraphicsContext3D.STEREO_LEFT);
- renderLeft();
-
- gc.setStereoMode(GraphicsContext3D.STEREO_RIGHT);
- renderRight();
- } else {
- gc.clear();
- renderLeft();
- }
-
- // This swap both left and right buffers so
- // there is no need to set STEREO_BOTH before it
- canvas.swap();
-
- // Be polite to other threads !
- Thread.yield();
- }
- }
-
-
- public PureImmediateStereo() {
- }
-
- //
- // init: create the canvas, stop the renderer,
- // create the universe, and start the drawing thread.
- //
- public void init() {
- setLayout(new BorderLayout());
-
- // Preferred to use Stereo
- GraphicsConfigTemplate3D gct = new GraphicsConfigTemplate3D();
- gct.setStereo(GraphicsConfigTemplate3D.PREFERRED);
-
- GraphicsConfiguration config =
- GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice().getBestConfiguration(gct);
-
- canvas = new Canvas3D(config);
- Map map = canvas.queryProperties();
-
- stereoSupport = canvas.getStereoAvailable();
-
- if (stereoSupport) {
- System.out.println("This machine support stereo, you should see a red cone on the left and green cone on the right.");
- // User can overide the above default behavior using
- // java3d property.
- String str = System.getProperty("j3d.sharedstereozbuffer",
- defaultSharedStereoZbuffer);
- sharedStereoZbuffer = (new Boolean(str)).booleanValue();
- } else {
- System.out.println("Stereo is not support, you should only see the left red cone.");
- }
-
- if (!canvas.getDoubleBufferAvailable()) {
- System.out.println("Double buffer is not support !");
- }
-
- // we must stop the Renderer in PureImmediate mode
- canvas.stopRenderer();
- add("Center", canvas);
-
- // Create the universe and viewing branch
- u = new SimpleUniverse(canvas);
-
- // This will move the ViewPlatform back a bit so the
- // objects in the scene can be viewed.
- u.getViewingPlatform().setNominalViewingTransform();
-
- // Start a new thread that will continuously render
- (new Thread(this)).start();
- }
-
- // Cleanup all Java3D threads and memory when this applet exit
- public void destroy() {
- u.cleanup();
- }
-
- //
- // The following allows PureImmediateStereo to be run as an application
- // as well as an applet
- //
- public static void main(String[] args) {
- new MainFrame(new PureImmediateStereo(), 512, 256);
- }
- }
-