Examples of javax.media.j3d.TransformGroup

javax.media.j3d.TransformGroup
Group node that contains a transform. The TransformGroup node specifies a single spatial transformation, via a Transform3D object, that can position, orient, and scale all of its children.
The specified transformation must be affine. Further, if the TransformGroup node is used as an ancestor of a ViewPlatform node in the scene graph, the transformation must be congruent-only rotations, translations, and uniform scales are allowed in a direct path from a Locale to a ViewPlatform node.
Note: Even though arbitrary affine transformations are allowed, better performance will result if all matrices within a branch graph are congruent, containing only rotations translation, and uniform scale.
The effects of transformations in the scene graph are cumulative. The concatenation of the transformations of each TransformGroup in a direct path from the Locale to a Leaf node defines a composite model transformation (CMT) that takes points in that Leaf node's local coordinates and transforms them into Virtual World (Vworld) coordinates. This composite transformation is used to transform points, normals, and distances into Vworld coordinates. Points are transformed by the CMT. Normals are transformed by the inverse-transpose of the CMT. Distances are transformed by the scale of the CMT. In the case of a transformation containing a nonuniform scale or shear, the maximum scale value in any direction is used. This ensures, for example, that a transformed bounding sphere, which is specified as a point and a radius, continues to enclose all objects that are also transformed using a nonuniform scale.


    BranchGroup objRoot = scene.getBranchgroup();


    Appearance a = new Appearance();
    a.setPolygonAttributes(new PolygonAttributes(PolygonAttributes.POLYGON_LINE, PolygonAttributes.CULL_NONE, 0));
    TransformGroup sphereTrans = new TransformGroup();
    sphereTrans.addChild(new Sphere(1.f, Sphere.GENERATE_NORMALS,40, a));


    scene.detach();
    objRoot.setCapability(BranchGroup.ALLOW_CHILDREN_EXTEND);
    objRoot.addChild(sphereTrans);

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        BranchGroup objRoot = new BranchGroup();
        // Create the TransformGroup node and initialize it to the
        // identity. Enable the TRANSFORM_WRITE capability so that
        // our behavior code can modify it at run time. Add it to
        // the root of the subgraph.
        TransformGroup objTrans = new TransformGroup();
        Transform3D t3dTrans = new Transform3D();
        objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
        objTrans.setTransform(t3dTrans);
        objRoot.addChild(objTrans);
        BoundingSphere bounds = new BoundingSphere(new Point3d(0.0, 0.0, 0.0),
                100.0);
        // Set up the ambient light
        Color3f ambientColor = new Color3f(0.3f, 0.3f, 0.3f);

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   * to hold the shape defined by the data in the file.
   * A transformation will then be applied to scale and center the shape.  
   */
  public XYZResultNodeJava3D(ActiveNode parent) {
    super(parent);
        transformGroup = new TransformGroup();
        transformGroup.setUserData(this);
        transformGroup.setPickable(true);
        transformGroup.setCapability(TransformGroup.ALLOW_BOUNDS_READ);
        transformGroup.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
        transformGroup.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);

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  protected transient TransformGroup transformGroup;
    
  public TransformGroupNodeJava3D(ActiveNode parent) {
    super(parent);
    transformGroup = new TransformGroup();
    transformGroup.setUserData(this);
    transformGroup.setPickable(true);
    transformGroup.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
    transformGroup.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
    SceneNodeJava3D.addChildToParentGroup((Group)getParent().get3DObject(), transformGroup);

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    private void readObject(java.io.ObjectInputStream in) throws java.lang.ClassNotFoundException, java.io.IOException {
      in.defaultReadObject();
      transformGroup = new TransformGroup();
      transformGroup.setUserData(this);
      transformGroup.setPickable(true);
      transformGroup.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
      transformGroup.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
    }

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  // Composed transformation 
  public TransformDataJava3d( TransformGroupNode node, TransformData transformRoot) {
    super(node, transformRoot);
    this.group = new TransformGroup();
    init();
  }

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  }
  
  public void restoreTransform(TransformGroupNode node, TransformData transformRoot){
    super.restoreTransform(node, transformRoot);
    
    this.group = new TransformGroup();
    trans = new Transform3D();
    group.getTransform(trans);
    updateTransform();
    group.setTransform(trans);
    if (node!=null) node.setDirty();

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        @Override
        public void actionPerformed(ActionEvent e) {
            
            GroupNode gn=(GroupNode)getNode();
            
            TransformGroup g=new TransformGroup();
            // TODO i18n
            g.setName("SolidFrame");
            
            Transform3D nz=new Transform3D();
            nz.rotZ(-Math.PI/2.);
            TransformGroup tgx=new TransformGroup(nz);
            tgx.setName("X");            
            makeSolidAxis(tgx, 1.f, 0.04f, 0.02f, 0.04f, Color.RED, Color.RED, 10);            
            g.addChild(tgx);


            TransformGroup tgy=new TransformGroup(new Transform3D());
            tgy.setName("Y");            
            makeSolidAxis(tgy, 1.f, 0.04f, 0.02f, 0.04f, Color.GREEN, Color.GREEN, 10);            
            g.addChild(tgy);
            
            Transform3D px=new Transform3D();
            px.rotX(Math.PI/2.);
            TransformGroup tgz=new TransformGroup(px);
            tgz.setName("Z");            
            makeSolidAxis(tgz, 1.f, 0.04f, 0.02f, 0.04f, Color.BLUE, Color.BLUE, 10);            
            g.addChild(tgz);


            gn.addChild(g);

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                    getLocation(),"Axis"); // TODO i18n
            AxisDialog.Result n=d.getResult();
            if(n!=null){
                GroupNode gn=(GroupNode)getNode();
        
                TransformGroup g=new TransformGroup();
                // TODO i18n
                g.setName("Axis");
        
                makeSolidAxis(g, n.height, n.arrowHeight, n.radius, n.arrowRadius, Color.WHITE, Color.WHITE, n.divisions);            


                gn.addChild(g);

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    static class AddTransformGroupAction extends AbstractNodeAction {
        // required for dynamic action creation
        public AddTransformGroupAction() {
        }
        public void actionPerformed(ActionEvent e) {
            ((GroupNode)getNode()).addChildUndoable(new TransformGroup());
            getNode().refresh();
        }

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