Java tutorial
/* * axisapp.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, * Axis class defines a visual object This particular class does not extend * another class. See other the text for a discussion and a differnt approach. * 2. Using LineArray to draw 3D lines. Three LineArray geometries are contained * in an instance of Axis. There are better ways of doing this. This is a simple * example. */ import java.applet.Applet; import java.awt.BorderLayout; import java.awt.Frame; import javax.media.j3d.BranchGroup; import javax.media.j3d.Canvas3D; import javax.media.j3d.LineArray; import javax.media.j3d.Shape3D; import javax.vecmath.Color3f; import javax.vecmath.Point3f; import com.sun.j3d.utils.applet.MainFrame; import com.sun.j3d.utils.universe.SimpleUniverse; public class AxisApp extends Applet { ///////////////////////////////////////////////// // // create graph branch group // public class Axis { private BranchGroup axisBG; //////////////////////////////////////////// // // create axis subgraph // public Axis() { axisBG = new BranchGroup(); // create line for X axis LineArray axisXLines = new LineArray(2, LineArray.COORDINATES); axisBG.addChild(new Shape3D(axisXLines)); axisXLines.setCoordinate(0, new Point3f(-1.0f, 0.0f, 0.0f)); axisXLines.setCoordinate(1, new Point3f(1.0f, 0.0f, 0.0f)); Color3f red = new Color3f(1.0f, 0.0f, 0.0f); Color3f green = new Color3f(0.0f, 1.0f, 0.0f); Color3f blue = new Color3f(0.0f, 0.0f, 1.0f); // create line for Y axis LineArray axisYLines = new LineArray(2, LineArray.COORDINATES | LineArray.COLOR_3); axisBG.addChild(new Shape3D(axisYLines)); axisYLines.setCoordinate(0, new Point3f(0.0f, -1.0f, 0.0f)); axisYLines.setCoordinate(1, new Point3f(0.0f, 1.0f, 0.0f)); axisYLines.setColor(0, green); axisYLines.setColor(1, blue); // create line for Z axis Point3f z1 = new Point3f(0.0f, 0.0f, -1.0f); Point3f z2 = new Point3f(0.0f, 0.0f, 1.0f); LineArray axisZLines = new LineArray(10, LineArray.COORDINATES | LineArray.COLOR_3); axisBG.addChild(new Shape3D(axisZLines)); axisZLines.setCoordinate(0, z1); axisZLines.setCoordinate(1, z2); axisZLines.setCoordinate(2, z2); axisZLines.setCoordinate(3, new Point3f(0.1f, 0.1f, 0.9f)); axisZLines.setCoordinate(4, z2); axisZLines.setCoordinate(5, new Point3f(-0.1f, 0.1f, 0.9f)); axisZLines.setCoordinate(6, z2); axisZLines.setCoordinate(7, new Point3f(0.1f, -0.1f, 0.9f)); axisZLines.setCoordinate(8, z2); axisZLines.setCoordinate(9, new Point3f(-0.1f, -0.1f, 0.9f)); Color3f colors[] = new Color3f[9]; colors[0] = new Color3f(0.0f, 1.0f, 1.0f); for (int v = 0; v < 9; v++) { colors[v] = red; } axisZLines.setColors(1, colors); } // end of axis constructor public BranchGroup getBG() { return axisBG; } } // end of class Axis ///////////////////////////////////////////////// // // create scene graph branch group // public BranchGroup createSceneGraph() { BranchGroup objRoot = new Axis().getBG(); // Let Java 3D perform optimizations on this scene graph. objRoot.compile(); return objRoot; } // end of CreateSceneGraph method of yoyo1 // Create a simple scene and attach it to the virtual universe public AxisApp() { 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 coneyoyo 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 AxisApp(), 256, 256); } // end of main method of axisapp } // end of class axisap