IEllipsoid.cs
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- // 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
- using System;
- using System.Collections.Generic;
- using System.Text;
- namespace SharpMap.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; }
- }
- }