/// <summary>
/// Performs a hit test on the <see cref="CompositeGraphic3D"/> at given point.
/// </summary>
/// <param name="point">The mouse position in destination coordinates.</param>
/// <returns>
/// <b>True</b> if <paramref name="point"/> "hits" any <see cref="Graphic3D"/>
/// in the subtree, <b>false</b> otherwise.
/// </returns>
/// <remarks>
/// Calling <see cref="HitTest3D"/> will recursively call <see cref="HitTest3D"/> on
/// <see cref="Graphic3D"/> objects in the subtree.
/// </remarks>
public virtual bool HitTest3D(Vector3D point)
{
return(Graphics3D.Any(graphic => graphic.HitTest(point)));
}