/// <summary>
/// Gets the nearest intersection point from the specifed picking ray.
/// </summary>
/// <param name="ray"></param>
/// <returns>
/// Distance to the start of the ray.
/// </returns>
public float?Intersects(Ray ray)
{
if (source == null)
{
return(null);
}
return(source.Intersects(AbsoluteTransform, ray));
}