package com.java3d.test;

import com.sun.j3d.utils.geometry.ColorCube; 
import java.applet.Applet; 
import java.awt.BorderLayout; 
import com.sun.j3d.utils.applet.MainFrame; 
import com.sun.j3d.utils.universe.*; 

import javax.media.j3d.*; 
import javax.vecmath.*; 
 
public class Pos2 extends Applet { 
        float knot[] = {0.0f,0.25f,0.5f,0.75f,1.0f}; 
        Point3f pos[]  = { 
          new Point3f(-.8f,-.6f,0.0f), 
          new Point3f(-.8f,.6f, 0.0f), 
          new Point3f(.8f, .6f, 0.0f), 
          new Point3f(.8f, -.6f,0.0f), 
          new Point3f(-.8f,-.6f,0.0f),    }; 
 
    private BranchGroup createSceneGraph() { 
        BranchGroup objRoot = new BranchGroup(); 
        TransformGroup objTran=new TransformGroup(); 
        objTran.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); 
        Transform3D t3d=new Transform3D(); 
        t3d.setScale(.3); 
        objTran.setTransform(t3d); 
        objRoot.addChild(objTran); 
 
        BoundingSphere bound=new BoundingSphere( 
           new Point3d(0.0,0.0,0.0),50.); 
 
        Transform3D tr=new Transform3D(); 
        TransformGroup translation=new TransformGroup(tr); 
        translation.addChild(new ColorCube(.2)); 
 
        objTran.addChild(translation); 
 
        translation.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); 
        Alpha xtranAlpha = new Alpha(-1, 
                              Alpha.INCREASING_ENABLE, 
                              0, 0,10000, 0, 0, 0, 0, 0); 
        PositionPathInterpolator tran = 
            new PositionPathInterpolator(xtranAlpha, translation, tr,            
                                     knot,pos); 
        tran.setSchedulingBounds(bound); 
        translation.addChild(tran); 
 
        return objRoot; 
    } 
 
    public Pos2() { 
        setLayout(new BorderLayout()); 
        Canvas3D c = new Canvas3D(SimpleUniverse
				.getPreferredConfiguration());
        add("Center", c); 
        BranchGroup scene = createSceneGraph(); 
        SimpleUniverse u = new SimpleUniverse(c); 
        u.getViewingPlatform().setNominalViewingTransform(); 
        u.addBranchGraph(scene); 
    } 
 
    public static void main(String[] args) { 
        new MainFrame(new Pos(), 640,480); 
    } 
}