Package com.luciad.reference

Interface ILcdTopocentricReference

All Superinterfaces:
Cloneable, ILcdCloneable, ILcdGeoReference
All Known Implementing Classes:
TLcdTopocentricReference
public interface ILcdTopocentricReference extends ILcdGeoReference

An ILcdTopocentricReference is an ILcdGeoReference that is defined by a geodetic datum and a lon-lat-height point that defines the origin of the topocentric coordinate system of this reference.

A topocentric coordinate system is a right-handed cartesian coordinate system with the following properties:

  • Its origin is defined by a lon-lat-height point on the ellipsoid.
  • The y-axis is directed northwards and aligned to intersect with the polar rotational axis of the ellipsoid.
  • The x-axis if directed eastwards.
  • The x-y plane is tangential to the ellipsoid at the origin.
  • The z-axis is perpendicular to the ellipsoid at the origin, and points outwards. In other words, the z-axis is perpendicular to the x-y plane.

This reference is also referred as an ENU (East-North-Up) projection.

  • Method Details

    • getOrigin

      ILcdPoint getOrigin()
      Returns the 3D origin of this ILcdTopocentricReference.
      Returns:
      the 3D origin of this ILcdTopocentricReference.