// Copyright 2005, 2006 - Morten Nielsen (www.iter.dk)
//
// This file is part of SharpMap.
// SharpMap is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// SharpMap is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
// You should have received a copy of the GNU Lesser General Public License
// along with SharpMap; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
namespace GeoAPI.CoordinateSystems{
/// <summary>
/// A 3D coordinate system, with its origin at the center of the Earth.
/// </summary>
public interface IGeocentricCoordinateSystem : ICoordinateSystem
{
/// <summary>
/// Returns the HorizontalDatum. The horizontal datum is used to determine where
/// the centre of the Earth is considered to be. All coordinate points will be
/// measured from the centre of the Earth, and not the surface.
/// </summary>
IHorizontalDatum HorizontalDatum { get; set; }
/// <summary>
/// Gets the units used along all the axes.
/// </summary>
ILinearUnit LinearUnit { get; set; }
/// <summary>
/// Returns the PrimeMeridian.
/// </summary>
IPrimeMeridian PrimeMeridian { get; set; }
}
}
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