/** Setup the basic scene which consists of a quad and a viewpoint */
private void setupSceneGraph() {
// View group
Viewpoint vp = new Viewpoint();
Vector3f trans = new Vector3f(0, 0, 1);
Matrix4f mat = new Matrix4f();
mat.setIdentity();
mat.setTranslation(trans);
TransformGroup tx = new TransformGroup();
tx.addChild(vp);
tx.setTransform(mat);
Group scene_root = new Group();
scene_root.addChild(tx);
// Flat panel that has the viewable object as the demo
float[] coord = {0, 0, -1, 0.25f, 0, -1, 0, 0.25f, -1};
float[] normal = {0, 0, 1, 0, 0, 1, 0, 0, 1};
TriangleArray geom = new TriangleArray();
geom.setValidVertexCount(3);
geom.setVertices(TriangleArray.COORDINATE_3, coord);
geom.setNormals(normal);
Material material = new Material();
material.setDiffuseColor(new float[] {0, 0, 1});
material.setEmissiveColor(new float[] {0, 0, 1});
material.setSpecularColor(new float[] {1, 1, 1});
material.setTransparency(0.5f);
Appearance app = new Appearance();
app.setMaterial(material);
Shape3D shape = new Shape3D();
shape.setGeometry(geom);
shape.setAppearance(app);
TransformGroup tg = new TransformGroup();
Matrix4f transform = new Matrix4f();
transform.setIdentity();
transform.setTranslation(new Vector3f(0.15f, 0, -1));
tg.setTransform(transform);
Shape3D backShape = new Shape3D();
Material material2 = new Material();
material2.setDiffuseColor(new float[] {1, 0, 0});
material2.setEmissiveColor(new float[] {1, 0, 0});
material2.setSpecularColor(new float[] {1, 1, 1});
Appearance app2 = new Appearance();
app2.setMaterial(material2);
backShape.setGeometry(geom);
backShape.setAppearance(app2);
tg.addChild(backShape);
scene_root.addChild(tg);
scene_root.addChild(shape);
SimpleScene scene = new SimpleScene();
scene.setRenderedGeometry(scene_root);
scene.setActiveView(vp);
// Then the basic layer and viewport at the top:
SimpleViewport view = new SimpleViewport();
view.setDimensions(0, 0, 500, 500);
view.setScene(scene);
SimpleLayer layer = new SimpleLayer();
layer.setViewport(view);
Layer[] layers = {layer};
displayManager.setLayers(layers, 1);
}