private void InitializeModels()
{
// create Main Model group - light and transforms for all sub model groups go here
_MainGroup = new Model3DGroup();
// Create default Transform collection
// Add transform collection to the _MainGroup
_GroupScaleTransform = new ScaleTransform3D(new Vector3D(1, 1, 1));
_GroupRotateTransformY = new RotateTransform3D(
new AxisAngleRotation3D(new Vector3D(0, 1, 0), 0),
new Point3D(0, 0, 0));
_GroupTranslateTransform = new TranslateTransform3D(new Vector3D(0, 1, 0));
Transform3DCollection tcollection = new Transform3DCollection();
tcollection.Add(_GroupScaleTransform);
tcollection.Add(_GroupRotateTransformY);
tcollection.Add(_GroupTranslateTransform);
// setup group transform
Transform3DGroup tGroupDefault = new Transform3DGroup();
tGroupDefault.Children = tcollection;
_MainGroup.Transform = tGroupDefault;
// Create sub model group [0] for the light
//
_ModelLights = new Model3DGroup();
AmbientLight light1 = new AmbientLight(Colors.White);
_ModelLights.Transform = tGroupDefault.Clone();
_ModelLights.Children.Add(light1);
_MainGroup.Children.Add(_ModelLights);
_ModelItems = new Model3DGroup();
_MainGroup.Children.Add(_ModelItems);
}