// 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;

}

}

}