EllipsoidSurfaceNormal Method | 
| Name | Description | |
|---|---|---|
| SurfaceNormal(Cartographic) | 
            The unit Cartesian vector directed along the surface normal at the provided cartographic position.
              | |
| SurfaceNormal(Double, Double) | 
            The unit Cartesian vector directed along the surface normal at the provided cartographic longitude and latitude.
              |