[Csp-commits] svn:csp r1491 - in trunk/CSP/SimData: . Include/SimData

[<sv...@ww...>]

Author: mkrose
Date: 2005-03-11 21:24:58 -0800 (Fri, 11 Mar 2005)
New Revision: 1491

Modified:
   trunk/CSP/SimData/CHANGES.current
   trunk/CSP/SimData/Include/SimData/Date.h
Log:
Add a method to DateZulu to get the time offset relative to another
DateZulu instance in seconds.

Browse at: https://www.zerobar.net/viewcvs/viewcvs.cgi?view=rev&rev=1491

Modified: trunk/CSP/SimData/CHANGES.current
===================================================================
--- trunk/CSP/SimData/CHANGES.current	2005-03-05 23:31:36 UTC (rev 1490)
+++ trunk/CSP/SimData/CHANGES.current	2005-03-12 05:24:58 UTC (rev 1491)
@@ -1,6 +1,10 @@
 Version 0.4.0 (in progress)
 ===========================
 
+2005-03-11: onsight
+ * Add a method to DateZulu to get the time offset relative to another
+   DateZulu instance in seconds.
+
 2005-02-16: delta
  * For some reasons, vs 2005 needs some template(!) classes to be
    exported whereas vs 2003 doesn't allow it... Back to a version

Modified: trunk/CSP/SimData/Include/SimData/Date.h
===================================================================
--- trunk/CSP/SimData/Include/SimData/Date.h	2005-03-05 23:31:36 UTC (rev 1490)
+++ trunk/CSP/SimData/Include/SimData/Date.h	2005-03-12 05:24:58 UTC (rev 1491)
@@ -669,6 +669,18 @@
 		return days;
 	}
 
+	/** Get the time relative to a reference date and time in seconds.
+	 *
+	 *  @param reference The reference data and time.
+	 *  @returns The number of seconds relative to the reference time (positive
+	 *    if the current time is greater than the reference time).
+	 */
+	double getRelativeTime(DateZulu const &reference) const {
+		const double dj = getJulian() - reference.getJulian();
+		const double dt = getTime() - reference.getTime();
+		return dj * 86400.0 + dt;
+	}
+
 	/** Get the real-valued Julian date.
 	 *
 	 *  @returns The Julian date and time as a real value,