Java tutorial
/********************************************************** Copyright (C) 2001 Daniel Selman First distributed with the book "Java 3D Programming" by Daniel Selman and published by Manning Publications. http://manning.com/selman This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. The license can be found on the WWW at: http://www.fsf.org/copyleft/gpl.html Or by writing to: Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. Authors can be contacted at: Daniel Selman: daniel@selman.org If you make changes you think others would like, please contact one of the authors or someone at the www.j3d.org web site. **************************************************************/ import java.applet.Applet; import java.awt.BorderLayout; import java.awt.GraphicsConfigTemplate; import java.awt.GraphicsDevice; import java.awt.GraphicsEnvironment; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.io.File; import java.net.URL; import javax.media.j3d.Alpha; import javax.media.j3d.AmbientLight; import javax.media.j3d.Appearance; import javax.media.j3d.AudioDevice; import javax.media.j3d.Background; import javax.media.j3d.BoundingSphere; import javax.media.j3d.Bounds; import javax.media.j3d.BranchGroup; import javax.media.j3d.Canvas3D; import javax.media.j3d.DirectionalLight; import javax.media.j3d.GraphicsConfigTemplate3D; import javax.media.j3d.Group; import javax.media.j3d.Locale; import javax.media.j3d.Material; import javax.media.j3d.PhysicalBody; import javax.media.j3d.PhysicalEnvironment; import javax.media.j3d.RotationInterpolator; import javax.media.j3d.Shape3D; import javax.media.j3d.Transform3D; import javax.media.j3d.TransformGroup; import javax.media.j3d.View; import javax.media.j3d.ViewPlatform; import javax.media.j3d.VirtualUniverse; import javax.vecmath.Color3f; import javax.vecmath.Point3d; import javax.vecmath.Vector3d; import javax.vecmath.Vector3f; import com.sun.j3d.audioengines.javasound.JavaSoundMixer; import com.sun.j3d.loaders.Scene; import com.sun.j3d.loaders.objectfile.ObjectFile; import com.sun.j3d.utils.applet.MainFrame; /** * Simple example that illustrates using Java 3D's * built in object loader to load a Lightwave file. */ public class LoaderTest extends Java3dApplet implements ActionListener { private static int m_kWidth = 400; private static int m_kHeight = 400; public LoaderTest() { initJava3d(); } public void actionPerformed(ActionEvent event) { } protected BranchGroup createSceneBranchGroup() { BranchGroup objRoot = super.createSceneBranchGroup(); // create a TransformGroup to flip the hand onto its end and enlarge it. TransformGroup objTrans1 = new TransformGroup(); Transform3D tr = new Transform3D(); objTrans1.getTransform(tr); tr.rotX(90.0 * Math.PI / 180.0); tr.setScale(10.0); objTrans1.setTransform(tr); // create a TransformGroup to rotate the hand TransformGroup objTrans2 = new TransformGroup(); objTrans2.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); objTrans2.setCapability(TransformGroup.ALLOW_TRANSFORM_READ); BoundingSphere bounds = new BoundingSphere(new Point3d(0.0, 0.0, 0.0), 100.0); // create a RotationInterpolator behavior to rotate the hand Transform3D yAxis = new Transform3D(); Alpha rotationAlpha = new Alpha(-1, Alpha.INCREASING_ENABLE, 0, 0, 4000, 0, 0, 0, 0, 0); RotationInterpolator rotator = new RotationInterpolator(rotationAlpha, objTrans2, yAxis, 0.0f, (float) Math.PI * 2.0f); rotator.setSchedulingBounds(bounds); objTrans2.addChild(rotator); // Set up the global lights Color3f lColor1 = new Color3f(0.7f, 0.7f, 0.7f); Vector3f lDir1 = new Vector3f(-1.0f, -1.0f, -1.0f); Color3f alColor = new Color3f(0.2f, 0.2f, 0.2f); AmbientLight aLgt = new AmbientLight(alColor); aLgt.setInfluencingBounds(bounds); DirectionalLight lgt1 = new DirectionalLight(lColor1, lDir1); lgt1.setInfluencingBounds(bounds); objRoot.addChild(aLgt); objRoot.addChild(lgt1); // load the object file Scene scene = null; Shape3D shape = null; // read in the geometry information from the data file ObjectFile objFileloader = new ObjectFile(ObjectFile.RESIZE); try { scene = objFileloader.load("hand1.obj"); } catch (Exception e) { scene = null; System.err.println(e); } if (scene == null) System.exit(1); // retrieve the Shape3D object from the scene BranchGroup branchGroup = scene.getSceneGroup(); shape = (Shape3D) branchGroup.getChild(0); // create an Appearance and Material Appearance app = new Appearance(); Color3f objColor = new Color3f(1.0f, 0.7f, 0.8f); Color3f black = new Color3f(0.0f, 0.0f, 0.0f); app.setMaterial(new Material(objColor, black, objColor, black, 80.0f)); // assign the appearance to the Shape shape.setAppearance(app); // connect the scenegraph objTrans2.addChild(scene.getSceneGroup()); objTrans1.addChild(objTrans2); objRoot.addChild(objTrans1); return objRoot; } public static void main(String[] args) { LoaderTest loaderTest = new LoaderTest(); loaderTest.saveCommandLineArguments(args); new MainFrame(loaderTest, m_kWidth, m_kHeight); } } /******************************************************************************* * Copyright (C) 2001 Daniel Selman * * First distributed with the book "Java 3D Programming" by Daniel Selman and * published by Manning Publications. http://manning.com/selman * * This program is free software; you can redistribute it and/or modify it under * the terms of the GNU General Public License as published by the Free Software * Foundation, version 2. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more * details. * * The license can be found on the WWW at: http://www.fsf.org/copyleft/gpl.html * * Or by writing to: Free Software Foundation, Inc., 59 Temple Place - Suite * 330, Boston, MA 02111-1307, USA. * * Authors can be contacted at: Daniel Selman: daniel@selman.org * * If you make changes you think others would like, please contact one of the * authors or someone at the www.j3d.org web site. ******************************************************************************/ //***************************************************************************** /** * Java3dApplet * * Base class for defining a Java 3D applet. Contains some useful methods for * defining views and scenegraphs etc. * * @author Daniel Selman * @version 1.0 */ //***************************************************************************** abstract class Java3dApplet extends Applet { public static int m_kWidth = 300; public static int m_kHeight = 300; protected String[] m_szCommandLineArray = null; protected VirtualUniverse m_Universe = null; protected BranchGroup m_SceneBranchGroup = null; protected Bounds m_ApplicationBounds = null; // protected com.tornadolabs.j3dtree.Java3dTree m_Java3dTree = null; public Java3dApplet() { } public boolean isApplet() { try { System.getProperty("user.dir"); System.out.println("Running as Application."); return false; } catch (Exception e) { } System.out.println("Running as Applet."); return true; } public URL getWorkingDirectory() throws java.net.MalformedURLException { URL url = null; try { File file = new File(System.getProperty("user.dir")); System.out.println("Running as Application:"); System.out.println(" " + file.toURL()); return file.toURL(); } catch (Exception e) { } System.out.println("Running as Applet:"); System.out.println(" " + getCodeBase()); return getCodeBase(); } public VirtualUniverse getVirtualUniverse() { return m_Universe; } //public com.tornadolabs.j3dtree.Java3dTree getJ3dTree() { //return m_Java3dTree; // } public Locale getFirstLocale() { java.util.Enumeration e = m_Universe.getAllLocales(); if (e.hasMoreElements() != false) return (Locale) e.nextElement(); return null; } protected Bounds getApplicationBounds() { if (m_ApplicationBounds == null) m_ApplicationBounds = createApplicationBounds(); return m_ApplicationBounds; } protected Bounds createApplicationBounds() { m_ApplicationBounds = new BoundingSphere(new Point3d(0.0, 0.0, 0.0), 100.0); return m_ApplicationBounds; } protected Background createBackground() { Background back = new Background(new Color3f(0.9f, 0.9f, 0.9f)); back.setApplicationBounds(createApplicationBounds()); return back; } public void initJava3d() { // m_Java3dTree = new com.tornadolabs.j3dtree.Java3dTree(); m_Universe = createVirtualUniverse(); Locale locale = createLocale(m_Universe); BranchGroup sceneBranchGroup = createSceneBranchGroup(); ViewPlatform vp = createViewPlatform(); BranchGroup viewBranchGroup = createViewBranchGroup(getViewTransformGroupArray(), vp); createView(vp); Background background = createBackground(); if (background != null) sceneBranchGroup.addChild(background); // m_Java3dTree.recursiveApplyCapability(sceneBranchGroup); // m_Java3dTree.recursiveApplyCapability(viewBranchGroup); locale.addBranchGraph(sceneBranchGroup); addViewBranchGroup(locale, viewBranchGroup); onDoneInit(); } protected void onDoneInit() { // m_Java3dTree.updateNodes(m_Universe); } protected double getScale() { return 1.0; } public TransformGroup[] getViewTransformGroupArray() { TransformGroup[] tgArray = new TransformGroup[1]; tgArray[0] = new TransformGroup(); // move the camera BACK a little... // note that we have to invert the matrix as // we are moving the viewer Transform3D t3d = new Transform3D(); t3d.setScale(getScale()); t3d.setTranslation(new Vector3d(0.0, 0.0, -20.0)); t3d.invert(); tgArray[0].setTransform(t3d); return tgArray; } protected void addViewBranchGroup(Locale locale, BranchGroup bg) { locale.addBranchGraph(bg); } protected Locale createLocale(VirtualUniverse u) { return new Locale(u); } protected BranchGroup createSceneBranchGroup() { m_SceneBranchGroup = new BranchGroup(); return m_SceneBranchGroup; } protected View createView(ViewPlatform vp) { View view = new View(); PhysicalBody pb = createPhysicalBody(); PhysicalEnvironment pe = createPhysicalEnvironment(); AudioDevice audioDevice = createAudioDevice(pe); if (audioDevice != null) { pe.setAudioDevice(audioDevice); audioDevice.initialize(); } view.setPhysicalEnvironment(pe); view.setPhysicalBody(pb); if (vp != null) view.attachViewPlatform(vp); view.setBackClipDistance(getBackClipDistance()); view.setFrontClipDistance(getFrontClipDistance()); Canvas3D c3d = createCanvas3D(); view.addCanvas3D(c3d); addCanvas3D(c3d); return view; } protected PhysicalBody createPhysicalBody() { return new PhysicalBody(); } protected AudioDevice createAudioDevice(PhysicalEnvironment pe) { JavaSoundMixer javaSoundMixer = new JavaSoundMixer(pe); if (javaSoundMixer == null) System.out.println("create of audiodevice failed"); return javaSoundMixer; } protected PhysicalEnvironment createPhysicalEnvironment() { return new PhysicalEnvironment(); } protected float getViewPlatformActivationRadius() { return 100; } protected ViewPlatform createViewPlatform() { ViewPlatform vp = new ViewPlatform(); vp.setViewAttachPolicy(View.RELATIVE_TO_FIELD_OF_VIEW); vp.setActivationRadius(getViewPlatformActivationRadius()); return vp; } protected Canvas3D createCanvas3D() { GraphicsConfigTemplate3D gc3D = new GraphicsConfigTemplate3D(); gc3D.setSceneAntialiasing(GraphicsConfigTemplate.PREFERRED); GraphicsDevice gd[] = GraphicsEnvironment.getLocalGraphicsEnvironment().getScreenDevices(); Canvas3D c3d = new Canvas3D(gd[0].getBestConfiguration(gc3D)); c3d.setSize(getCanvas3dWidth(c3d), getCanvas3dHeight(c3d)); return c3d; } protected int getCanvas3dWidth(Canvas3D c3d) { return m_kWidth; } protected int getCanvas3dHeight(Canvas3D c3d) { return m_kHeight; } protected double getBackClipDistance() { return 100.0; } protected double getFrontClipDistance() { return 1.0; } protected BranchGroup createViewBranchGroup(TransformGroup[] tgArray, ViewPlatform vp) { BranchGroup vpBranchGroup = new BranchGroup(); if (tgArray != null && tgArray.length > 0) { Group parentGroup = vpBranchGroup; TransformGroup curTg = null; for (int n = 0; n < tgArray.length; n++) { curTg = tgArray[n]; parentGroup.addChild(curTg); parentGroup = curTg; } tgArray[tgArray.length - 1].addChild(vp); } else vpBranchGroup.addChild(vp); return vpBranchGroup; } protected void addCanvas3D(Canvas3D c3d) { setLayout(new BorderLayout()); add(c3d, BorderLayout.CENTER); doLayout(); } protected VirtualUniverse createVirtualUniverse() { return new VirtualUniverse(); } protected void saveCommandLineArguments(String[] szArgs) { m_szCommandLineArray = szArgs; } protected String[] getCommandLineArguments() { return m_szCommandLineArray; } } //File: hand1.obj /* # Mon Jun 02 17:09:33 1997 # # g hand1 v -0.551223 0.307562 -3.946050 v -0.215465 0.030475 -3.703516 v -0.059140 0.068255 -1.551531 v -0.487235 0.455792 -4.006029 v -0.168743 0.090975 -3.755638 v -0.338689 0.569450 -4.244848 v -0.639211 0.502297 -4.165243 v -0.760687 0.647871 -4.482797 v -0.529792 0.073768 -3.945949 v -0.707612 0.258064 -4.192451 v -0.866004 0.446161 -4.511733 v -0.367733 -0.147323 -4.191223 v -0.717413 0.071719 -4.433171 v -0.893823 0.253971 -4.589350 v -0.172976 -0.188212 -3.754734 v -0.089148 -0.103984 -1.450071 v -0.234491 -0.100206 -3.756646 v -0.131305 -0.032994 -1.531782 v -0.589492 0.641054 -4.376035 v -0.050594 -0.257375 -4.417058 v 0.208857 -0.205637 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