lights = new DirectionalLight[1];
for (int i=0; i<lights.length; ++i) {
// TODO : position lights around the object
lights[i] = new DirectionalLight(true,new Color3f(1.0f,1.0f,1.0f),new Vector3f(-1,-1,-1));
rootGroup.addChild(lights[i]);
}
rootGroup.addChild(branchgroup);
locale.addBranchGraph(rootGroup);