Surface shape types.
| Member | Value | Description |
|---|---|---|
| eCrdnReferenceShapeEllipsoid | 1 | An ellipsoid reference shape as defined by the central body (by default, it is WSG84). |
| eCrdnReferenceShapeTerrain | 2 | Terrain as the terrain reference. |
| eCrdnReferenceShapeMSL | 3 | Mean Sea Level as the terrain reference. |