// 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 IProjectedCoordinateSystem interface defines the standard information stored with
    /// projected coordinate system objects. A projected coordinate system is defined using a
    /// geographic coordinate system object and a projection object that defines the
    /// coordinate transformation from the geographic coordinate system to the projected
    /// coordinate systems. The instances of a single ProjectedCoordinateSystem COM class can
    /// be used to model different projected coordinate systems (e.g., UTM Zone 10, Albers)
    /// by associating the ProjectedCoordinateSystem instances with Projection instances
    /// belonging to different Projection COM classes (Transverse Mercator and Albers,
    /// respectively).
    /// </summary>
    public interface IProjectedCoordinateSystem : IHorizontalCoordinateSystem
    {
        /// <summary>
        /// Gets or sets the geographic coordinate system associated with the projected
        /// coordinate system.
        /// </summary>
        IGeographicCoordinateSystem GeographicCoordinateSystem { get; set; }

        /// <summary>
        /// Gets or sets the linear (projected) units of the projected coordinate system.
        /// </summary>
        ILinearUnit LinearUnit { get; set; }

        /// <summary>
        /// Gets or sets the projection for the projected coordinate system.
        /// </summary>
        IProjection Projection { get; set; }
    }
}