iprojectedcoordinatesystem.cs

Sharp Map 用于制作GIS系统S harp Map 用于制作GIS系统S harp Map 用于制作GIS系统

// 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 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; }
	}
}