I tried to run this code on Eclipse IDE but it won't execute. If you have a solution to this problem please share it.

//the code

import java.awt.BorderLayout; import java.awt.GraphicsConfiguration;

import javax.swing.JFrame; import javax.swing.JPanel;

import org.jogamp.java3d.*; import org.jogamp.java3d.utils.behaviors.keyboard.KeyNavigatorBehavior; import org.jogamp.java3d.utils.geometry.ColorCube; import org.jogamp.java3d.utils.universe.*; import org.jogamp.vecmath.*;

public class RotatingCube extends JPanel {

private static final long serialVersionUID = 1L; private static JFrame frame; public final static Color3f Red = new Color3f(1.0f, 0.0f, 0.0f); public final static Color3f Green = new Color3f(0.0f, 1.0f, 0.0f); public final static Color3f Blue = new Color3f(0.0f, 0.0f, 1.0f); public final static Color3f Yellow = new Color3f(1.0f, 1.0f, 0.0f); public final static Color3f Cyan = new Color3f(0.0f, 1.0f, 1.0f); public final static Color3f Orange = new Color3f(1.0f, 0.5f, 0.0f); public final static Color3f Magenta = new Color3f(1.0f, 0.0f, 1.0f); public final static Color3f White = new Color3f(1.0f, 1.0f, 1.0f); public final static Color3f Grey = new Color3f(0.35f, 0.35f, 0.35f); public final static Color3f Black = new Color3f(0.0f, 0.0f, 0.0f); public final static Color3f[] clr_list = {Blue, Green, Red, Yellow, Cyan, Orange, Magenta, Grey}; public final static int clr_num = 8;

public final static BoundingSphere hundredBS = new BoundingSphere(new Point3d(), 100.0); public final static BoundingSphere twentyBS = new BoundingSphere(new Point3d(), 20.0); /* a function to create a rotation behavior and refer it to 'rotTG' */ private static RotationInterpolator rotateBehavior(int r_num, TransformGroup rotTG) { rotTG.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); Transform3D yAxis = new Transform3D(); Alpha rotationAlpha = new Alpha(-1, r_num); RotationInterpolator rot_beh = new RotationInterpolator( rotationAlpha, rotTG, yAxis, 0.0f, (float) Math.PI * 2.0f); rot_beh.setSchedulingBounds(hundredBS); return rot_beh; } /* a function to add two point lights at the opposite locations of the scene */ public static BranchGroup addLights(Color3f clr, int p_num) { BranchGroup lightBG = new BranchGroup(); Point3f atn = new Point3f(0.5f, 0.0f, 0.0f); PointLight ptLight; float adjt = 1f; for (int i = 0; (i < p_num) && (i < 2); i++) { if (i > 0) adjt = -1f; ptLight = new PointLight(clr, new Point3f(3.0f * adjt, 1.0f, 3.0f * adjt), atn); ptLight.setInfluencingBounds(hundredBS); lightBG.addChild(ptLight); } return lightBG; }

/* a function to position viewer to 'eye' location */ public static void defineViewer(SimpleUniverse simple_U, Point3d eye) { TransformGroup viewTransform = simple_U.getViewingPlatform().getViewPlatformTransform(); Point3d center = new Point3d(0, 0, 0); // define the point where the eye looks at Vector3d up = new Vector3d(0, 1, 0); // define camera's up direction Transform3D view_TM = new Transform3D(); view_TM.lookAt(eye, center, up); view_TM.invert(); viewTransform.setTransform(view_TM); // set the TransformGroup of ViewingPlatform }

/* a function to allow key navigation with the ViewingPlateform */ public static KeyNavigatorBehavior keyNavigation(SimpleUniverse simple_U) { ViewingPlatform view_platfm = simple_U.getViewingPlatform(); TransformGroup view_TG = view_platfm.getViewPlatformTransform(); KeyNavigatorBehavior keyNavBeh = new KeyNavigatorBehavior(view_TG); keyNavBeh.setSchedulingBounds(twentyBS); return keyNavBeh; }

/* a function to build the content branch */ public static BranchGroup createScene() { BranchGroup sceneBG = new BranchGroup(); TransformGroup sceneTG = new TransformGroup(); sceneTG.addChild(new ColorCube(0.5)); sceneBG.addChild(addLights(White, 1)); sceneBG.addChild(rotateBehavior(5000, sceneTG)); sceneBG.addChild(sceneTG); return sceneBG; }

/* NOTE: Keep the constructor for each of the labs and assignments */ public RotatingCube(BranchGroup sceneBG) { GraphicsConfiguration config = SimpleUniverse.getPreferredConfiguration(); Canvas3D canvas = new Canvas3D(config); SimpleUniverse su = new SimpleUniverse(canvas); // create a SimpleUniverse defineViewer(su, new Point3d(1.0d, 1.0d, 4.0d)); // set the viewer's location sceneBG.addChild(keyNavigation(su)); // allow key navigation sceneBG.compile(); // optimize the BranchGroup su.addBranchGraph(sceneBG); // attach the scene to SimpleUniverse

setLayout(new BorderLayout()); add("Center", canvas); frame.setSize(800, 800); // set the size of the JFrame frame.setVisible(true); } public static void main(String[] args) { frame = new JFrame("XY's Rotating Cube"); // NOTE: change XY to student's initials frame.getContentPane().add(new RotatingCube(createScene())); // create an instance of the class frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); } }