Java tutorial
/* * AxisClassDemoApp.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 is a program to demonstrate the Axis class defined in the file Axis.java * distributed with the tutorial. */ import java.applet.Applet; import java.awt.BorderLayout; import java.awt.Frame; import javax.media.j3d.Alpha; import javax.media.j3d.BoundingSphere; import javax.media.j3d.BranchGroup; import javax.media.j3d.Canvas3D; import javax.media.j3d.Geometry; import javax.media.j3d.GeometryArray; import javax.media.j3d.IndexedLineArray; import javax.media.j3d.RotationInterpolator; import javax.media.j3d.Shape3D; import javax.media.j3d.Transform3D; import javax.media.j3d.TransformGroup; import javax.vecmath.Point3d; import javax.vecmath.Point3f; import javax.vecmath.Vector3f; import com.sun.j3d.utils.applet.MainFrame; import com.sun.j3d.utils.geometry.ColorCube; import com.sun.j3d.utils.universe.SimpleUniverse; public class AxisClassDemoApp extends Applet { ///////////////////////////////////////////////// // // create scene graph branch group // public BranchGroup createSceneGraph() { BranchGroup objRoot = new BranchGroup(); objRoot.addChild(new Axis()); // 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); // 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); Transform3D trans = new Transform3D(); trans.set(new Vector3f(0.5f, 0.0f, 0.0f)); TransformGroup objTrans = new TransformGroup(trans); objRoot.addChild(objSpin); objSpin.addChild(objTrans); objSpin.addChild(rotator); objTrans.addChild(new ColorCube(0.1)); // Let Java 3D perform optimizations on this scene graph. objRoot.compile(); return objRoot; } // end of CreateSceneGraph method of AxisClassDemoApp // Create a simple scene and attach it to the virtual universe public AxisClassDemoApp() { setLayout(new BorderLayout()); Canvas3D canvas3D = new Canvas3D(null); add("Center", canvas3D); BranchGroup scene = createSceneGraph(); // SimpleUniverse is a Convenience Utility class SimpleUniverse simpleU = new SimpleUniverse(canvas3D); // This will move the ViewPlatform back a bit so the // objects in the scene can be viewed. simpleU.getViewingPlatform().setNominalViewingTransform(); simpleU.addBranchGraph(scene); } // end of AxisClassDemoApp 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 AxisClassDemoApp(), 256, 256); } // end of main method of AxisClassDemoApp } // end of class AxisClassDemoApp /* * Getting Started with the Java 3D API written in Java 3D * * This program demonstrates: 1. writing a visual object class In this program, * Axis class defines a visual object This particular class extends Shape3D See * the text for a discussion. 2. Using LineArray to draw 3D lines. */ class Axis extends Shape3D { //////////////////////////////////////////// // // create axis visual object // public Axis() { this.setGeometry(createGeometry()); } private Geometry createGeometry() { // create line for X axis IndexedLineArray axisLines = new IndexedLineArray(18, GeometryArray.COORDINATES, 30); axisLines.setCoordinate(0, new Point3f(-1.0f, 0.0f, 0.0f)); axisLines.setCoordinate(1, new Point3f(1.0f, 0.0f, 0.0f)); axisLines.setCoordinate(2, new Point3f(0.9f, 0.1f, 0.1f)); axisLines.setCoordinate(3, new Point3f(0.9f, -0.1f, 0.1f)); axisLines.setCoordinate(4, new Point3f(0.9f, 0.1f, -0.1f)); axisLines.setCoordinate(5, new Point3f(0.9f, -0.1f, -0.1f)); axisLines.setCoordinate(6, new Point3f(0.0f, -1.0f, 0.0f)); axisLines.setCoordinate(7, new Point3f(0.0f, 1.0f, 0.0f)); axisLines.setCoordinate(8, new Point3f(0.1f, 0.9f, 0.1f)); axisLines.setCoordinate(9, new Point3f(-0.1f, 0.9f, 0.1f)); axisLines.setCoordinate(10, new Point3f(0.1f, 0.9f, -0.1f)); axisLines.setCoordinate(11, new Point3f(-0.1f, 0.9f, -0.1f)); axisLines.setCoordinate(12, new Point3f(0.0f, 0.0f, -1.0f)); axisLines.setCoordinate(13, new Point3f(0.0f, 0.0f, 1.0f)); axisLines.setCoordinate(14, new Point3f(0.1f, 0.1f, 0.9f)); axisLines.setCoordinate(15, new Point3f(-0.1f, 0.1f, 0.9f)); axisLines.setCoordinate(16, new Point3f(0.1f, -0.1f, 0.9f)); axisLines.setCoordinate(17, new Point3f(-0.1f, -0.1f, 0.9f)); axisLines.setCoordinateIndex(0, 0); axisLines.setCoordinateIndex(1, 1); axisLines.setCoordinateIndex(2, 2); axisLines.setCoordinateIndex(3, 1); axisLines.setCoordinateIndex(4, 3); axisLines.setCoordinateIndex(5, 1); axisLines.setCoordinateIndex(6, 4); axisLines.setCoordinateIndex(7, 1); axisLines.setCoordinateIndex(8, 5); axisLines.setCoordinateIndex(9, 1); axisLines.setCoordinateIndex(10, 6); axisLines.setCoordinateIndex(11, 7); axisLines.setCoordinateIndex(12, 8); axisLines.setCoordinateIndex(13, 7); axisLines.setCoordinateIndex(14, 9); axisLines.setCoordinateIndex(15, 7); axisLines.setCoordinateIndex(16, 10); axisLines.setCoordinateIndex(17, 7); axisLines.setCoordinateIndex(18, 11); axisLines.setCoordinateIndex(19, 7); axisLines.setCoordinateIndex(20, 12); axisLines.setCoordinateIndex(21, 13); axisLines.setCoordinateIndex(22, 14); axisLines.setCoordinateIndex(23, 13); axisLines.setCoordinateIndex(24, 15); axisLines.setCoordinateIndex(25, 13); axisLines.setCoordinateIndex(26, 16); axisLines.setCoordinateIndex(27, 13); axisLines.setCoordinateIndex(28, 17); axisLines.setCoordinateIndex(29, 13); return axisLines; } // end of Axis createGeometry() } // end of class Axis