SpatialReference.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.Converters.WellKnownText
- {
- /// <summary>
- /// Converts spatial reference IDs to a Well-Known Text representation.
- /// </summary>
- public class SpatialReference
- {
- /// <summary>
- /// Converts a Spatial Reference ID to a Well-known Text representation
- /// </summary>
- /// <param name="srid">Spatial Reference ID</param>
- /// <returns>Well-known text</returns>
- public static string SridToWkt(int srid)
- {
-
- System.Xml.XmlDocument xmldoc = new System.Xml.XmlDocument();
-
- string file = System.IO.Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().CodeBase) + "\SpatialRefSys.xml";
- //if (!System.IO.File.Exists(file))
- // throw new ApplicationException("Spatial reference system database not found: " + file);
- xmldoc.Load(file);
- //xmldoc.Load(System.Reflection.Assembly.GetExecutingAssembly().GetManifestResourceStream("SharpMap.SpatialReference.SpatialRefSys.xml"));
- System.Xml.XmlNode node = xmldoc.DocumentElement.SelectSingleNode("/SpatialReference/ReferenceSystem[SRID='" + srid.ToString() + "']");
- if(node!=null)
- return node.LastChild.InnerText;
- else
- return "";
- }
- }
- }