Unit.cs
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上传日期:2013-11-09
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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>
- /// Class for defining units
- /// </summary>
- public class Unit : Info, IUnit
- {
- /// <summary>
- /// Initializes a new unit
- /// </summary>
- /// <param name="conversionFactor">Conversion factor to base unit</param>
- /// <param name="name">Name of unit</param>
- /// <param name="authority">Authority name</param>
- /// <param name="authorityCode">Authority-specific identification code.</param>
- /// <param name="alias">Alias</param>
- /// <param name="abbreviation">Abbreviation</param>
- /// <param name="remarks">Provider-supplied remarks</param>
- internal Unit(double conversionFactor, string name, string authority, long authorityCode, string alias, string abbreviation, string remarks)
- :
- base(name, authority, authorityCode, alias, abbreviation, remarks)
- {
- _ConversionFactor = conversionFactor;
- }
- /// <summary>
- /// Initializes a new unit
- /// </summary>
- /// <param name="name">Name of unit</param>
- /// <param name="conversionFactor">Conversion factor to base unit</param>
- internal Unit(string name, double conversionFactor)
- : this(conversionFactor, name, String.Empty, -1, String.Empty, String.Empty, String.Empty)
- {
- }
- private double _ConversionFactor;
- /// <summary>
- /// Gets or sets the number of units per base-unit.
- /// </summary>
- public double ConversionFactor
- {
- get { return _ConversionFactor; }
- set { _ConversionFactor = value; }
- }
- /// <summary>
- /// Returns the Well-known text for this object
- /// as defined in the simple features specification.
- /// </summary>
- public override string WKT
- {
- get
- {
- StringBuilder sb = new StringBuilder();
- sb.AppendFormat(SharpMap.Map.numberFormat_EnUS, "UNIT["{0}", {1}", Name, _ConversionFactor);
- if (!String.IsNullOrEmpty(Authority) && AuthorityCode > 0)
- sb.AppendFormat(", AUTHORITY["{0}", "{1}"]", Authority, AuthorityCode);
- sb.Append("]");
- return sb.ToString();
- }
- }
- /// <summary>
- /// Gets an XML representation of this object [NOT IMPLEMENTED].
- /// </summary>
- public override string XML
- {
- get
- {
- throw new NotImplementedException();
- }
- }
- /// <summary>
- /// Checks whether the values of this instance is equal to the values of another instance.
- /// Only parameters used for coordinate system are used for comparison.
- /// Name, abbreviation, authority, alias and remarks are ignored in the comparison.
- /// </summary>
- /// <param name="obj"></param>
- /// <returns>True if equal</returns>
- public override bool EqualParams(object obj)
- {
- if (!(obj is SharpMap.CoordinateSystems.Unit))
- return false;
- return (obj as Unit).ConversionFactor == this.ConversionFactor;
- }
- }
- }