Java/3D/Axis

Axis App

/*
 * 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.rupile();
    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

Axis class

/*
 * 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.rupile();
    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