// 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>
/// The IEllipsoid interface defines the standard information stored with ellipsoid objects.
/// </summary>
public interface IEllipsoid : IInfo
{
/// <summary>
/// Gets or sets the value of the semi-major axis.
/// </summary>
double SemiMajorAxis { get; set; }
/// <summary>
/// Gets or sets the value of the semi-minor axis.
/// </summary>
double SemiMinorAxis { get; set; }
/// <summary>
/// Gets or sets the value of the inverse of the flattening constant of the ellipsoid.
/// </summary>
double InverseFlattening { get; set; }
/// <summary>
/// Gets or sets the value of the axis unit.
/// </summary>
ILinearUnit AxisUnit { get; set; }
/// <summary>
/// Is the Inverse Flattening definitive for this ellipsoid? Some ellipsoids use the
/// IVF as the defining value, and calculate the polar radius whenever asked. Other
/// ellipsoids use the polar radius to calculate the IVF whenever asked. This
/// distinction can be important to avoid floating-point rounding errors.
/// </summary>
bool IsIvfDefinitive { get; set; }
}
}
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