icoordinatetransformation.cs

C# 的地图开发例子（sharp map)

// 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.Transformations
{
	/// <summary>
	/// Describes a coordinate transformation. This interface only describes a 
	/// coordinate transformation, it does not actually perform the transform 
	/// operation on points. To transform points you must use a math transform.
	/// </summary>
	public interface ICoordinateTransformation
	{
		/// <summary>
		/// Human readable description of domain in source coordinate system.
		/// </summary>
		string AreaOfUse { get; }
		/// <summary>
		/// Authority which defined transformation and parameter values.
		/// </summary>
		/// <remarks>
		/// An Authority is an organization that maintains definitions of Authority Codes. For example the European Petroleum Survey Group (EPSG) maintains a database of coordinate systems, and other spatial referencing objects, where each object has a code number ID. For example, the EPSG code for a WGS84 Lat/Lon coordinate system is