Java/3D/Cone
Cone Yoyo
<source lang="java">
/*
* ConeYoyoApp.java 1.0 98/11/25 * * Copyright (c) 1998 Sun Microsystems, Inc. All Rights Reserved. * * Sun grants you ("Licensee") a non-exclusive, royalty free, license to use, * modify and redistribute this software in source and binary code form, * provided that i) this copyright notice and license appear on all copies of * the software; and ii) Licensee does not utilize the software in a manner * which is disparaging to Sun. * * 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. * * This software is not designed or intended for use in on-line control of * aircraft, air traffic, aircraft navigation or aircraft communications; or in * the design, construction, operation or maintenance of any nuclear facility. * Licensee represents and warrants that it will not use or redistribute the * Software for such purposes. */
/*
* Getting Started with the Java 3D API written in Java 3D * * This program demonstrates: 1. writing a visual object class In this program, * ConeYoyo class defines a visual object independent of all other classes. 2. * Using Cone to create surfaces. */
import java.applet.Applet; import java.awt.BorderLayout; import java.awt.Frame; import javax.media.j3d.Alpha; import javax.media.j3d.Appearance; 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.vecmath.Point3d; import javax.vecmath.Vector3f; import com.sun.j3d.utils.applet.MainFrame; import com.sun.j3d.utils.geometry.Cone; import com.sun.j3d.utils.universe.SimpleUniverse; public class ConeYoyoApp extends Applet {
///////////////////////////////////////////////// // // create scene graph branch group // public class ConeYoyo { private BranchGroup yoyoBG; //////////////////////////////////////////// // // create Shape3D with geometry and appearance // the geometry is created in method yoyoGeometry // the appearance is created in method yoyoAppearance // public ConeYoyo() { yoyoBG = new BranchGroup(); Appearance app = new Appearance(); // rotate object has composited transformation matrix Transform3D rotate = new Transform3D(); Transform3D translate = new Transform3D(); translate.set(new Vector3f(0.1f, 0.0f, 0.0f)); TransformGroup yoyoTGT1 = new TransformGroup(translate); yoyoBG.addChild(yoyoTGT1); rotate.rotZ(Math.PI / 2.0d); TransformGroup yoyoTGR1 = new TransformGroup(rotate); Cone cone1 = new Cone(0.6f, 0.2f); cone1.setAppearance(app); yoyoTGR1.addChild(cone1); yoyoTGT1.addChild(yoyoTGR1); translate.set(new Vector3f(-0.1f, 0.0f, 0.0f)); TransformGroup yoyoTGT2 = new TransformGroup(translate); yoyoBG.addChild(yoyoTGT2); rotate.rotZ(-Math.PI / 2.0d); TransformGroup yoyoTGR2 = new TransformGroup(rotate); Cone cone2 = new Cone(0.6f, 0.2f); cone2.setAppearance(app); yoyoTGR2.addChild(cone2); yoyoTGT2.addChild(yoyoTGR2); yoyoBG.rupile(); } // end of ConeYoyo constructor public BranchGroup getBG() { return yoyoBG; } } // end of class ConeYoyo ///////////////////////////////////////////////// // // create scene graph branch group // public BranchGroup createSceneGraph() { BranchGroup objRoot = new BranchGroup(); // 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 objSpin = new TransformGroup(); objSpin.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); objRoot.addChild(objSpin); objSpin.addChild(new ConeYoyo().getBG()); // Create a new Behavior object that will perform the desired // operation on the specified transform object and add it into // the scene graph. Transform3D yAxis = new Transform3D(); Alpha rotationAlpha = new Alpha(-1, 4000); RotationInterpolator rotator = new RotationInterpolator(rotationAlpha, objSpin); BoundingSphere bounds = new BoundingSphere(new Point3d(0.0, 0.0, 0.0), 100.0); rotator.setSchedulingBounds(bounds); objSpin.addChild(rotator); // Let Java 3D perform optimizations on this scene graph. objRoot.rupile(); return objRoot; } // end of CreateSceneGraph method of yoyo1 // Create a simple scene and attach it to the virtual universe public ConeYoyoApp() { setLayout(new BorderLayout()); Canvas3D canvas3D = new Canvas3D(null); add("Center", canvas3D); BranchGroup scene = createSceneGraph(); SimpleUniverse simpleU = new SimpleUniverse(canvas3D); simpleU.getViewingPlatform().setNominalViewingTransform(); simpleU.addBranchGraph(scene); } // end of ConeYoyoApp constructor // The following allows this to be run as an application // as well as an applet public static void main(String[] args) { Frame frame = new MainFrame(new ConeYoyoApp(), 256, 256); } // end of main method of coneyoyo
} // end of class ConeYoyoApp
</source>
Creates a cone using the utility class Cone
<source lang="java">
/* Essential Java 3D Fast Ian Palmer Publisher: Springer-Verlag ISBN: 1-85233-394-4
- /
import java.awt.BorderLayout; import java.awt.Button; import java.awt.Frame; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.media.j3d.Appearance; import javax.media.j3d.BranchGroup; import javax.media.j3d.Canvas3D; import javax.media.j3d.Locale; import javax.media.j3d.Node; import javax.media.j3d.PhysicalBody; import javax.media.j3d.PhysicalEnvironment; 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.AxisAngle4d; import javax.vecmath.Vector3f; import com.sun.j3d.utils.geometry.Cone; /**
* Creates a cone using the utility class Cone. * * @author I.J.Palmer * @version 1.0 */
public class SimpleCone extends Frame implements ActionListener {
protected Canvas3D myCanvas3D = new Canvas3D(null); protected Button myButton = new Button("Exit"); /** * This function builds the view branch of the scene graph. It creates a * branch group and then creates the necessary view elements to give a * useful view of our content. * * @param c * Canvas3D that will display the view * @return BranchGroup that is the root of the view elements */ protected BranchGroup buildViewBranch(Canvas3D c) { BranchGroup viewBranch = new BranchGroup(); Transform3D viewXfm = new Transform3D(); viewXfm.set(new Vector3f(0.0f, 0.0f, 5.0f)); TransformGroup viewXfmGroup = new TransformGroup(viewXfm); ViewPlatform myViewPlatform = new ViewPlatform(); PhysicalBody myBody = new PhysicalBody(); PhysicalEnvironment myEnvironment = new PhysicalEnvironment(); viewXfmGroup.addChild(myViewPlatform); viewBranch.addChild(viewXfmGroup); View myView = new View(); myView.addCanvas3D(c); myView.attachViewPlatform(myViewPlatform); myView.setPhysicalBody(myBody); myView.setPhysicalEnvironment(myEnvironment); return viewBranch; } /** * This builds the content branch of our scene graph. It uses the buildShape * function to create the actual shape, adding to to the transform group so * that the shape is slightly tilted to reveal its 3D shape. * * @param shape * Node that represents the geometry for the content * @return BranchGroup that is the root of the content branch */ protected BranchGroup buildContentBranch() { BranchGroup contentBranch = new BranchGroup(); Transform3D rotateCube = new Transform3D(); rotateCube.set(new AxisAngle4d(1.0, 1.0, 0.0, Math.PI / 4.0)); TransformGroup rotationGroup = new TransformGroup(rotateCube); contentBranch.addChild(rotationGroup); rotationGroup.addChild(new Cone(1.0f, 2.0f, 0, new Appearance())); return contentBranch; } /** * This simply builds the shape using the Cone utility class. * * @param Node * that the is the Cone created */ protected Node buildShape() { return new Cone(1.0f, 2.0f, Cone.GENERATE_NORMALS, new Appearance()); } /** * Handles the exit button action to quit the program. */ public void actionPerformed(ActionEvent e) { dispose(); System.exit(0); } public SimpleCone() { VirtualUniverse myUniverse = new VirtualUniverse(); Locale myLocale = new Locale(myUniverse); myLocale.addBranchGraph(buildViewBranch(myCanvas3D)); myLocale.addBranchGraph(buildContentBranch()); setTitle("SimpleWorld"); setSize(400, 400); setLayout(new BorderLayout()); add("Center", myCanvas3D); add("South", myButton); myButton.addActionListener(this); setVisible(true); } public static void main(String[] args) { SimpleCone sw = new SimpleCone(); }
}
</source>