Java tutorial
/* * @(#)Text3DLoad.java 1.19 02/10/21 13:56:22 * * 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.Button; import java.awt.Font; import java.awt.GraphicsConfiguration; import java.awt.Panel; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.media.j3d.Alpha; import javax.media.j3d.AmbientLight; import javax.media.j3d.Appearance; import javax.media.j3d.Background; import javax.media.j3d.BoundingSphere; import javax.media.j3d.BranchGroup; import javax.media.j3d.Canvas3D; import javax.media.j3d.DirectionalLight; import javax.media.j3d.Font3D; import javax.media.j3d.FontExtrusion; import javax.media.j3d.Material; import javax.media.j3d.RotationInterpolator; import javax.media.j3d.Shape3D; import javax.media.j3d.Text3D; import javax.media.j3d.Transform3D; import javax.media.j3d.TransformGroup; import javax.vecmath.Color3f; import javax.vecmath.Point3d; import javax.vecmath.Point3f; import javax.vecmath.Vector3f; import com.sun.j3d.utils.applet.MainFrame; import com.sun.j3d.utils.behaviors.vp.OrbitBehavior; import com.sun.j3d.utils.universe.SimpleUniverse; import com.sun.j3d.utils.universe.ViewingPlatform; public class Text3DLoad extends Applet implements ActionListener { private String fontName = "TestFont"; private String textString = null; private double tessellation = 0.0; private SimpleUniverse u; private Button button; private boolean behaviorsOn = false; private OrbitBehavior orbit; public BranchGroup createSceneGraph() { float sl = textString.length(); // Create the root of the branch graph BranchGroup objRoot = new BranchGroup(); // Create a Transformgroup to scale all objects so they // appear in the scene. TransformGroup objScale = new TransformGroup(); Transform3D t3d = new Transform3D(); // Assuming uniform size chars, set scale to fit string in view t3d.setScale(1.2 / sl); objScale.setTransform(t3d); objRoot.addChild(objScale); // Create the transform group node and initialize it to the // identity. Enable the TRANSFORM_WRITE capability so that // our behavior code can modify it at runtime. Add it to the // root of the subgraph. TransformGroup objTrans = new TransformGroup(); objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_READ); objScale.addChild(objTrans); Font3D f3d; if (tessellation > 0.0) { f3d = new Font3D(new Font(fontName, Font.PLAIN, 2), tessellation, new FontExtrusion()); } else { f3d = new Font3D(new Font(fontName, Font.PLAIN, 2), new FontExtrusion()); } Text3D txt = new Text3D(f3d, textString, new Point3f(-sl / 2.0f, -1.f, -1.f)); Shape3D sh = new Shape3D(); Appearance app = new Appearance(); Material mm = new Material(); mm.setLightingEnable(true); app.setMaterial(mm); sh.setGeometry(txt); sh.setAppearance(app); objTrans.addChild(sh); BoundingSphere bounds = new BoundingSphere(new Point3d(0.0, 0.0, 0.0), 100.0); if (false) { 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, objTrans, yAxis, 0.0f, (float) Math.PI * 2.0f); rotator.setSchedulingBounds(bounds); objTrans.addChild(rotator); } // Set up the background Color3f bgColor = new Color3f(0.05f, 0.05f, 0.5f); Background bgNode = new Background(bgColor); bgNode.setApplicationBounds(bounds); objRoot.addChild(bgNode); // Set up the ambient light Color3f ambientColor = new Color3f(0.3f, 0.3f, 0.3f); AmbientLight ambientLightNode = new AmbientLight(ambientColor); ambientLightNode.setInfluencingBounds(bounds); objRoot.addChild(ambientLightNode); // Set up the directional lights Color3f light1Color = new Color3f(1.0f, 1.0f, 0.9f); Vector3f light1Direction = new Vector3f(1.0f, 1.0f, 1.0f); Color3f light2Color = new Color3f(1.0f, 1.0f, 0.9f); Vector3f light2Direction = new Vector3f(-1.0f, -1.0f, -1.0f); DirectionalLight light1 = new DirectionalLight(light1Color, light1Direction); light1.setInfluencingBounds(bounds); objRoot.addChild(light1); DirectionalLight light2 = new DirectionalLight(light2Color, light2Direction); light2.setInfluencingBounds(bounds); objRoot.addChild(light2); return objRoot; } private void usage() { System.out.println("Usage: java Text3DLoad [-f fontname] [-t tessellation] [<text>]"); System.exit(0); } // End of usage public Text3DLoad() { } public Text3DLoad(String args[]) { if (args.length == 0) { // usage(); textString = "Java3D"; } else { for (int i = 0; i < args.length; i++) { if (args[i].startsWith("-")) { if (args[i].equals("-f")) { if (i < args.length - 1) { fontName = args[++i]; } else { usage(); } } else if (args[i].equals("-t")) { if (i < args.length - 1) { tessellation = Double.parseDouble(args[++i]); } else { usage(); } } else { System.err.println("Argument '" + args[i] + "' ignored."); } } else { textString = args[i]; } } } if (textString == null) { usage(); } } public void init() { if (textString == null) { textString = "Java3D"; } setLayout(new BorderLayout()); button = new Button("remove behaviors"); button.addActionListener(this); Panel p = new Panel(); p.add(button); add("South", p); 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(); // create a SimpleUniverse with 4 TransformGroups for the mouse // behaviors u = new SimpleUniverse(c); // add the behaviors to the ViewingPlatform ViewingPlatform viewingPlatform = u.getViewingPlatform(); viewingPlatform.setNominalViewingTransform(); // add orbit behavior to ViewingPlatform orbit = new OrbitBehavior(c, OrbitBehavior.REVERSE_ALL | OrbitBehavior.STOP_ZOOM); BoundingSphere bounds = new BoundingSphere(new Point3d(0.0, 0.0, 0.0), 100.0); orbit.setSchedulingBounds(bounds); viewingPlatform.setViewPlatformBehavior(orbit); behaviorsOn = true; u.addBranchGraph(scene); } public void destroy() { u.cleanup(); } public void actionPerformed(ActionEvent e) { if (e.getSource() == button) { ViewingPlatform v = u.getViewingPlatform(); if (behaviorsOn) { v.setViewPlatformBehavior(null); button.setLabel("add behaviors"); behaviorsOn = false; } else { v.setViewPlatformBehavior(orbit); button.setLabel("remove behaviors"); behaviorsOn = true; } } } // // The following allows Text3DLoad to be run as an application // as well as an applet // public static void main(String[] args) { new MainFrame(new Text3DLoad(args), 700, 700); } }