How to add two objects on scene and how to rotate them?

Question

I am beginer on 3d. I am trying do write applet where are 3x3x3 rubic.
My plans are to have 27 litle cubes. There are 6 flats (9 cubes in a flat) so i have six objects groups. My problem at this moment is that i cant find out how to make two objets. Each of this two objects consists from couple more litle objects. Some of litle objects can be in first and second big object. For example it can be two flats of rubic (corner).
Is anybody have some examples or somehow to hepl me to find out.
Thanks a lot

Answer 1

I have code :
import java.applet.Applet;
import java.awt.*;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.behaviors.mouse.*;
import com.sun.j3d.utils.universe.SimpleUniverse;
import javax.media.j3d.*;
import javax.vecmath.AxisAngle4f;
import javax.vecmath.Color3f;
import javax.vecmath.Vector3f;
public class RubicApplet extends Applet implements MouseListener
     TransformGroup objRotate = null;
public BranchGroup createSceneGraph(SimpleUniverse su,Canvas3D canvas)
     // Create the root of the branch graph
     BranchGroup objRoot = new BranchGroup();
     objRoot.setCapability(BranchGroup.ALLOW_DETACH);
Transform3D transform = new Transform3D();
     transform.setRotation(new AxisAngle4f(.5f,1f,1f,.5f));
BoundingSphere behaveBounds = new BoundingSphere();
// create Cube and RotateBehavior objects
objRotate = new TransformGroup(transform);
objRotate.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
objRotate.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
objRotate.setCapability(TransformGroup.ENABLE_PICK_REPORTING);
// Colors
Color3f gray = new Color3f(0.2f,0.2f,0.2f);
Color3f red = new Color3f(1.0f,0.0f,0.0f);
Color3f white = new Color3f(1.0f,1.0f,1.0f);
Color3f yellow = new Color3f(1.0f,1.0f,0.0f);
Color3f green = new Color3f(0.0f,1.0f,0.0f);
Color3f blue = new Color3f(0.0f,0.0f,1.0f);
Color3f purple = new Color3f(1.0f,0.0f,1.0f);
     // Object possition
float x=-0.5f;
float y=-0.5f;
float z=-0.5f;
objRoot.addChild(objRotate);
     // colors for: back, front, right, left, bottom, top
Color3f[] myColors0 = {white,gray,gray,red,blue,gray};
RCube cube1 = new RCube(myColors0,new Vector3f(x-1,y-1,z-1));
     // colors for: back, front, right, left, bottom, top
Color3f[] myColors1 = {gray,gray,gray,red,blue,gray};
     RCube cube2 = new RCube(myColors1,new Vector3f(x-1,y-1,z+1));
     // colors for: back, front, right, left, bottom, top
Color3f[] myColors2 = {gray,yellow,gray,red,blue,gray};
     RCube cube3 = new RCube(myColors2,new Vector3f(x-1,y-1,z+3));
// colors for: back, front, right, left, bottom, top
Color3f[] myColors3 = {white,gray,gray,red,gray,gray};
     RCube cube4 = new RCube(myColors3,new Vector3f(x-1,y+1,z-1));
objRotate.addChild(cube1);
objRotate.addChild(cube2);
objRotate.addChild(cube3);
objRotate.addChild(cube4);
MouseRotate myMouseRotate = new MouseRotate();
myMouseRotate.setTransformGroup(objRotate);
myMouseRotate.setSchedulingBounds(new BoundingSphere());
objRoot.addChild(myMouseRotate);
MouseTranslate myMouseTranslate = new MouseTranslate();
myMouseTranslate.setTransformGroup(objRotate);
myMouseTranslate.setSchedulingBounds(new BoundingSphere());
objRoot.addChild(myMouseTranslate);
MouseZoom myMouseZoom = new MouseZoom();
myMouseZoom.setTransformGroup(objRotate);
myMouseZoom.setSchedulingBounds(new BoundingSphere());
objRoot.addChild(myMouseZoom);
// Let Java 3D perform optimizations on this scene graph.
objRoot.compile();
     return objRoot;
public RubicApplet()
setLayout(new BorderLayout());
GraphicsConfiguration config =SimpleUniverse.getPreferredConfiguration();
Canvas3D canvas3D = new Canvas3D(config);
canvas3D.addMouseListener(this);
add("Center", canvas3D);
SimpleUniverse simpleU = new SimpleUniverse(canvas3D);
BranchGroup scene = createSceneGraph(simpleU,canvas3D);
     simpleU.getViewingPlatform().setNominalViewingTransform();
simpleU.addBranchGraph(scene);
public static void main(String[] args)
Frame frame = new MainFrame(new RubicApplet(), 600, 600);
     public void mouseClicked(MouseEvent e)
     public void mouseEntered(MouseEvent e)
     public void mouseExited(MouseEvent e)
     public void mousePressed(MouseEvent e)
     public void mouseReleased(MouseEvent e)
I need to rotate with some event two cubes and with some other event rotate three cubes