CodeLab1.java

import javax.swing.JPanel;

import org.jogamp.java3d.*; import org.jogamp.vecmath.*;

public class CodeLab1 extends JPanel { private static final long serialVersionUID = 1L;

private static Shape3D lineShape() { float r = 0.6f, x, y; // vertex at 0.06 away from origin Point3f coor[] = new Point3f[5];

LineArray lineArr = new LineArray(10, LineArray.COLOR_3 | LineArray.COORDINATES); for (int i = 0; i

for (int i = 0; i

/* a function to create and return the scene BranchGroup */ public static BranchGroup createScene() { BranchGroup sceneBG = new BranchGroup(); // create 'objsBG' for content TransformGroup sceneTG = new TransformGroup(); // create a TransformGroup (TG) sceneBG.addChild(sceneTG); // add TG to the scene BranchGroup sceneBG.addChild(Commons.rotateBehavior(10000, sceneTG)); // make sceneTG continuously rotating sceneTG.addChild(lineShape()); sceneBG.compile(); // optimize objsBG return sceneBG; }

/* the main entrance of the application via 'MyGUI()' of "CommonXY.java" */ public static void main(String[] args) { java.awt.EventQueue.invokeLater(new Runnable() { public void run() { Commons.setEye(new Point3d(1.35, 0.35, 2.0)); new Commons.MyGUI(createScene(), "XY's Lab 1"); } }); } }

Commons.java

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.geometry.ColorCube; import org.jogamp.java3d.utils.universe.SimpleUniverse; import org.jogamp.vecmath.*;

public class Commons extends JPanel { private static final long serialVersionUID = 1L; 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(0.5f, 0.5f, 0.5f); public final static Color3f[] Clrs = {Blue, Green, Red, Yellow, Cyan, Orange, Magenta, Grey}; public final static int clr_num = 8;

private static JFrame frame; private static Point3d eye = new Point3d(1.35, 0.35, 2.0);

/* a function to create a rotation behavior and refer it to 'my_TG' */ public static RotationInterpolator rotateBehavior(int r_num, TransformGroup my_TG) {

my_TG.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); Transform3D yAxis = new Transform3D(); Alpha rotationAlpha = new Alpha(-1, r_num); RotationInterpolator rot_beh = new RotationInterpolator( rotationAlpha, my_TG, yAxis, 0.0f, (float) Math.PI * 2.0f); BoundingSphere bounds = new BoundingSphere(new Point3d(0.0, 0.0, 0.0), 100.0); rot_beh.setSchedulingBounds(bounds); return rot_beh; } /* a function to position viewer to 'eye' location */ public static void defineViewer(SimpleUniverse su) {

TransformGroup viewTransform = su.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 build the content branch and attach to 'scene' */ private static BranchGroup createScene() { BranchGroup scene = new BranchGroup(); TransformGroup content_TG = new TransformGroup(); // create a TransformGroup (TG) content_TG.addChild(new ColorCube(0.4f)); scene.addChild(content_TG); // add TG to the scene BranchGroup scene.addChild(rotateBehavior(10000, content_TG)); // make TG continuously rotating return scene; } public static void setEye(Point3d eye_position) { eye = eye_position; }

/* a constructor to set up and run the application */ public Commons(BranchGroup sceneBG) { GraphicsConfiguration config = SimpleUniverse.getPreferredConfiguration(); Canvas3D canvas_3D = new Canvas3D(config); SimpleUniverse su = new SimpleUniverse(canvas_3D); // create a SimpleUniverse defineViewer(su); // set the viewer's location

sceneBG.compile(); su.addBranchGraph(sceneBG); // attach the scene to SimpleUniverse setLayout(new BorderLayout()); add("Center", canvas_3D); frame.setSize(600, 600); // set the size of the JFrame frame.setVisible(true); }

public static void main(String[] args) { frame = new JFrame("XY's Commons"); // call constructor with 'createScene()' frame.getContentPane().add(new Commons(createScene())); } public static class MyGUI extends JFrame { private static final long serialVersionUID = 1L; public MyGUI(BranchGroup branchGroup, String title) { frame = new JFrame(title); // call constructor with 'branchGroup' frame.getContentPane().add(new Commons(branchGroup)); pack(); } } }

Exercises of Lab #2 Create a new file for CodeLab2.java class within the package of your Lab1 by modifying either your or the provided CodeLab1.java file. Choose suitable modeling techniques of Java3D- supported geometry and enalbe the new program producing the following result: 1. When n