#region Copyright
/*
* Copyright (c) 2005,2006,2007, OpenMI Association
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the OpenMI Association nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY "OpenMI Association" ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL "OpenMI Association" BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#endregion
using System;
namespace RTCTools.OpenMI.Sdk.DevelopmentSupport
{
///
/// Support class for conversions between DateTime objects and Modified Julian Dates
/// Modified Julian Date is the number of days since November 17, 1858.
///
public class CalendarConverter
{
private static DateTime _ModifiedJulianDateZero = new DateTime (1858, 11, 17);
private static long _ModifiedJulianDateZeroTicks = new DateTime (1858, 11, 17).Ticks;
///
/// Converts a DateTime object to modified julian date
///
/// DateTime object
/// Modified Julian Date (days since November 17, 1858)
public static double Gregorian2ModifiedJulian(DateTime gregorianDate)
{
long ticks = gregorianDate.Ticks - _ModifiedJulianDateZeroTicks;
double result = ((double) ticks) / ((double) TimeSpan.TicksPerDay);
return result;
}
///
/// Converts a modified julian date to a DateTime object
///
/// Modified Julian Date (days since November 17, 1858)
/// DateTime object
public static DateTime ModifiedJulian2Gregorian(double modifiedJulianDate)
{
return _ModifiedJulianDateZero.AddDays (modifiedJulianDate);
}
}
}