/// <summary>
/// Callback called when the Model property's value has changed.
/// Assign the Visual3DModel protected CLR property
/// Pattern described here : http://blogs.msdn.com/wpf3d/archive/2007/09/05/subclassing-uielement3d.aspx
/// </summary>
/// <param name="d">Sender object</param>
/// <param name="e">Callback arguments</param>
private static void ModelPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
GeometryElement3D element = (GeometryElement3D)d;
element.Visual3DModel = (Model3D)e.NewValue;
}
/// <summary>
/// Callback to call in subclasses when a visual dependency property value has changed (i.e. by databinding).
/// </summary>
/// <param name="d">Sender object</param>
/// <param name="e">Callback arguments</param>
protected static void VisualPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
GeometryElement3D element = (GeometryElement3D)d;
element.InvalidateModel();
}