public void TestBasics()
{
// Check that our JD computation is the same as the book's (p. 88)
CalendarAstronomer astro = new CalendarAstronomer();
IBM.ICU.Util.GregorianCalendar cal3 = new IBM.ICU.Util.GregorianCalendar(
IBM.ICU.Util.TimeZone.GetTimeZone("GMT"), Locale.US);
IBM.ICU.Text.DateFormat d3 = IBM.ICU.Text.DateFormat.GetDateTimeInstance(cal3, IBM.ICU.Text.DateFormat.MEDIUM,
IBM.ICU.Text.DateFormat.MEDIUM, Locale.US);
cal3.Clear();
cal3.Set(IBM.ICU.Util.Calendar.YEAR, 1980);
cal3.Set(IBM.ICU.Util.Calendar.MONTH, IBM.ICU.Util.Calendar.JULY);
cal3.Set(IBM.ICU.Util.Calendar.DATE, 27);
astro.SetDate(cal3.GetTime());
double jd = astro.GetJulianDay() - 2447891.5d;
double exp = -3444;
if (jd == exp)
{
Logln(d3.Format(cal3.GetTime()) + " => " + jd);
}
else
{
Errln("FAIL: " + d3.Format(cal3.GetTime()) + " => " + jd
+ ", expected " + exp);
}
// cal3.clear();
// cal3.set(cal3.YEAR, 1990);
// cal3.set(cal3.MONTH, Calendar.JANUARY);
// cal3.set(cal3.DATE, 1);
// cal3.add(cal3.DATE, -1);
// astro.setDate(cal3.getTime());
// astro.foo();
}
/// <summary>
/// Answers a DateFormat instance for formatting and parsing times in the
/// specified style for the specified Locale.
/// </summary>
///
/// <param name="style">one of SHORT, MEDIUM, LONG, FULL, or DEFAULT</param>
/// <param name="locale">the Locale</param>
/// <returns>a DateFormat</returns>
public static DateFormat GetTimeInstance(int style, Locale locale)
{
CheckTimeStyle(style);
IBM.ICU.Text.DateFormat icuFormat = IBM.ICU.Text.DateFormat
.GetTimeInstance(style, locale);
return(new SimpleDateFormat(locale,
(IBM.ICU.Text.SimpleDateFormat)icuFormat));
}
public void TestSunriseTimes()
{
// logln("Sunrise/Sunset times for San Jose, California, USA");
// CalendarAstronomer astro = new CalendarAstronomer(-121.55, 37.20);
// TimeZone tz = TimeZone.getTimeZone("America/Los_Angeles");
// We'll use a table generated by the UNSO website as our reference
// From: http://aa.usno.navy.mil/
// -Location: W079 25, N43 40
// -Rise and Set for the Sun for 2001
// -Zone: 4h West of Greenwich
int[] USNO = { 6, 59, 19, 45, 6, 57, 19, 46, 6, 56, 19, 47, 6, 54, 19,
48, 6, 52, 19, 49, 6, 50, 19, 51, 6, 48, 19, 52, 6, 47, 19, 53,
6, 45, 19, 54, 6, 43, 19, 55, 6, 42, 19, 57, 6, 40, 19, 58, 6,
38, 19, 59, 6, 36, 20, 0, 6, 35, 20, 1, 6, 33, 20, 3, 6, 31,
20, 4, 6, 30, 20, 5, 6, 28, 20, 6, 6, 27, 20, 7, 6, 25, 20,8,
6, 23, 20, 10, 6, 22, 20, 11, 6, 20, 20, 12, 6, 19, 20, 13, 6,
17, 20, 14, 6, 16, 20, 16, 6, 14, 20, 17, 6, 13, 20, 18, 6, 11,
20, 19, };
Logln("Sunrise/Sunset times for Toronto, Canada");
CalendarAstronomer astro = new CalendarAstronomer(-(79 + 25 / 60),
43 + 40 / 60);
// As of ICU4J 2.8 the ICU4J time zones implement pass-through
// to the underlying JDK. Because of variation in the
// underlying JDKs, we have to use a fixed-offset
// SimpleTimeZone to get consistent behavior between JDKs.
// The offset we want is [-18000000, 3600000] (raw, dst).
// [aliu 10/15/03]
// TimeZone tz = TimeZone.getTimeZone("America/Montreal");
IBM.ICU.Util.TimeZone tz = new SimpleTimeZone(-18000000 + 3600000, "Montreal(FIXED)");
IBM.ICU.Util.GregorianCalendar cal = new IBM.ICU.Util.GregorianCalendar(tz, Locale.US);
IBM.ICU.Util.GregorianCalendar cal2 = new IBM.ICU.Util.GregorianCalendar(tz, Locale.US);
cal.Clear();
cal.Set(IBM.ICU.Util.Calendar.YEAR, 2001);
cal.Set(IBM.ICU.Util.Calendar.MONTH, IBM.ICU.Util.Calendar.APRIL);
cal.Set(IBM.ICU.Util.Calendar.DAY_OF_MONTH, 1);
cal.Set(IBM.ICU.Util.Calendar.HOUR_OF_DAY, 12); // must be near local noon for
// getSunRiseSet to work
IBM.ICU.Text.DateFormat df = IBM.ICU.Text.DateFormat.GetTimeInstance(cal, IBM.ICU.Text.DateFormat.MEDIUM,
Locale.US);
IBM.ICU.Text.DateFormat df2 = IBM.ICU.Text.DateFormat.GetDateTimeInstance(cal, IBM.ICU.Text.DateFormat.MEDIUM,
IBM.ICU.Text.DateFormat.MEDIUM, Locale.US);
IBM.ICU.Text.DateFormat day = IBM.ICU.Text.DateFormat.GetDateInstance(cal, IBM.ICU.Text.DateFormat.MEDIUM,
Locale.US);
for (int i = 0; i < 30; i++)
{
astro.SetDate(cal.GetTime());
DateTime sunrise = DateUtil.DateFromJavaMillis(astro.GetSunRiseSet(true));
DateTime sunset = DateUtil.DateFromJavaMillis(astro.GetSunRiseSet(false));
cal2.SetTime(cal.GetTime());
cal2.Set(IBM.ICU.Util.Calendar.SECOND, 0);
cal2.Set(IBM.ICU.Util.Calendar.MILLISECOND, 0);
cal2.Set(IBM.ICU.Util.Calendar.HOUR_OF_DAY, USNO[4 * i + 0]);
cal2.Set(IBM.ICU.Util.Calendar.MINUTE, USNO[4 * i + 1]);
DateTime exprise = cal2.GetTime();
cal2.Set(IBM.ICU.Util.Calendar.HOUR_OF_DAY, USNO[4 * i + 2]);
cal2.Set(IBM.ICU.Util.Calendar.MINUTE, USNO[4 * i + 3]);
DateTime expset = cal2.GetTime();
// Compute delta of what we got to the USNO data, in seconds
int deltarise = Math.Abs((int)((sunrise.Ticks / 10000) - (exprise.Ticks / 10000)) / 1000);
int deltaset = Math.Abs((int)((sunset.Ticks / 10000) - (expset.Ticks / 10000)) / 1000);
// Allow a deviation of 0..MAX_DEV seconds
// It would be nice to get down to 60 seconds, but at this
// point that appears to be impossible without a redo of the
// algorithm using something more advanced than Duffett-Smith.
int MAX_DEV = 180;
if (deltarise > MAX_DEV || deltaset > MAX_DEV)
{
if (deltarise > MAX_DEV)
{
Errln("FAIL: " + day.Format(cal.GetTime()) + ", Sunrise: "
+ df2.Format(sunrise) + " (USNO "
+ df.Format(exprise) + " d=" + deltarise + "s)");
}
else
{
Logln(day.Format(cal.GetTime()) + ", Sunrise: "
+ df.Format(sunrise) + " (USNO "
+ df.Format(exprise) + ")");
}
if (deltaset > MAX_DEV)
{
Errln("FAIL: " + day.Format(cal.GetTime()) + ", Sunset: "
+ df2.Format(sunset) + " (USNO "
+ df.Format(expset) + " d=" + deltaset + "s)");
}
else
{
Logln(day.Format(cal.GetTime()) + ", Sunset: "
+ df.Format(sunset) + " (USNO " + df.Format(expset)
+ ")");
}
}
else
{
Logln(day.Format(cal.GetTime()) + ", Sunrise: "
+ df.Format(sunrise) + " (USNO " + df.Format(exprise)
+ ")" + ", Sunset: " + df.Format(sunset) + " (USNO "
+ df.Format(expset) + ")");
}
cal.Add(IBM.ICU.Util.Calendar.DATE, 1);
}
// CalendarAstronomer a = new CalendarAstronomer(-(71+5/60), 42+37/60);
// cal.clear();
// cal.set(cal.YEAR, 1986);
// cal.set(cal.MONTH, cal.MARCH);
// cal.set(cal.DATE, 10);
// cal.set(cal.YEAR, 1988);
// cal.set(cal.MONTH, cal.JULY);
// cal.set(cal.DATE, 27);
// a.setDate(cal.getTime());
// long r = a.getSunRiseSet2(true);
}