DouKaku?

import scala.swing._

import javax.media.j3d._
import javax.vecmath._
import com.sun.j3d.utils.universe._
import com.sun.j3d.utils.geometry.ColorCube

@SuppressWarnings(Array("serial"))
object Sample3D {
    def createSceneGraph() :BranchGroup = {
        val objRoot = new BranchGroup();

        val objTrans = new TransformGroup();
        objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
        objRoot.addChild(objTrans);

        val axis = new Transform3D();
        axis.rotZ(Math.Pi / 2);
        val bounds = new BoundingSphere(new Point3d(), 100.0);
        
        var rotator = new RotationInterpolator(
                new Alpha(-1,20 * 4000) , 
                objTrans , 
                axis     , 
                0.0F     , 
                (Math.Pi * 2.0).toFloat);
        rotator.setSchedulingBounds(bounds);
        objRoot.addChild(rotator);

        val objTrans2 = new TransformGroup();
        objTrans2.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
        objTrans.addChild(objTrans2);
        rotator = new RotationInterpolator(new Alpha(-1, 4000), objTrans2);
        rotator.setSchedulingBounds(bounds);
        objRoot.addChild(rotator);

        objTrans2.addChild(new ColorCube(0.4));
        objRoot.compile();
        return objRoot;
    }
}

object Main extends SimpleGUIApplication {
    val config = SimpleUniverse.getPreferredConfiguration();
    val canvas = new Canvas3D(config);
    
    //create frame window
    def top=new MainFrame{
      peer.setBounds(10, 10, 480, 480)
      //caption
      title = "Sample3D with Scala/Java3D"
      
      val contentPane = peer.getContentPane()
      contentPane.setLayout(new java.awt.BorderLayout());
      contentPane.add(canvas,java.awt.BorderLayout.CENTER)
      
    } // end of MainFrame
    
    val scene = Sample3D.createSceneGraph();
    val universe = new SimpleUniverse(canvas);
    universe.getViewingPlatform().setNominalViewingTransform();
    universe.addBranchGraph(scene);
    
}