Examples with CalendarAstronomer android.icu.impl.CalendarAstronomer used on opensource projects

Example 6 with CalendarAstronomer

use of android.icu.impl.CalendarAstronomer in project j2objc by google.

the class AstroTest method TestCoordinates.

@Test
public void TestCoordinates() {
    CalendarAstronomer astro = new CalendarAstronomer();
    Equatorial result = astro.eclipticToEquatorial(139.686111 * PI / 180.0, 4.875278 * PI / 180.0);
    logln("result is " + result + ";  " + result.toHmsString());
}

Example 7 with CalendarAstronomer

use of android.icu.impl.CalendarAstronomer in project j2objc by google.

the class AstroTest method TestSunriseTimes.

@Test
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");
    TimeZone tz = new SimpleTimeZone(-18000000 + 3600000, "Montreal(FIXED)");
    GregorianCalendar cal = new GregorianCalendar(tz, Locale.US);
    GregorianCalendar cal2 = new GregorianCalendar(tz, Locale.US);
    cal.clear();
    cal.set(Calendar.YEAR, 2001);
    cal.set(Calendar.MONTH, Calendar.APRIL);
    cal.set(Calendar.DAY_OF_MONTH, 1);
    // must be near local noon for getSunRiseSet to work
    cal.set(Calendar.HOUR_OF_DAY, 12);
    DateFormat df = DateFormat.getTimeInstance(cal, DateFormat.MEDIUM, Locale.US);
    DateFormat df2 = DateFormat.getDateTimeInstance(cal, DateFormat.MEDIUM, DateFormat.MEDIUM, Locale.US);
    DateFormat day = DateFormat.getDateInstance(cal, DateFormat.MEDIUM, Locale.US);
    for (int i = 0; i < 30; i++) {
        astro.setDate(cal.getTime());
        Date sunrise = new Date(astro.getSunRiseSet(true));
        Date sunset = new Date(astro.getSunRiseSet(false));
        cal2.setTime(cal.getTime());
        cal2.set(Calendar.SECOND, 0);
        cal2.set(Calendar.MILLISECOND, 0);
        cal2.set(Calendar.HOUR_OF_DAY, USNO[4 * i + 0]);
        cal2.set(Calendar.MINUTE, USNO[4 * i + 1]);
        Date exprise = cal2.getTime();
        cal2.set(Calendar.HOUR_OF_DAY, USNO[4 * i + 2]);
        cal2.set(Calendar.MINUTE, USNO[4 * i + 3]);
        Date expset = cal2.getTime();
        // Compute delta of what we got to the USNO data, in seconds
        int deltarise = Math.abs((int) (sunrise.getTime() - exprise.getTime()) / 1000);
        int deltaset = Math.abs((int) (sunset.getTime() - expset.getTime()) / 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.
        final 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(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);
}

Example 8 with CalendarAstronomer

use of android.icu.impl.CalendarAstronomer in project android_frameworks_base by crdroidandroid.

the class TwilightService method calculateTwilightState.

/**
     * Calculates the twilight state for a specific location and time.
     *
     * @param location the location to use
     * @param timeMillis the reference time to use
     * @return the calculated {@link TwilightState}, or {@code null} if location is {@code null}
     */
private static TwilightState calculateTwilightState(Location location, long timeMillis) {
    if (location == null) {
        return null;
    }
    final CalendarAstronomer ca = new CalendarAstronomer(location.getLongitude(), location.getLatitude());
    final Calendar noon = Calendar.getInstance();
    noon.setTimeInMillis(timeMillis);
    noon.set(Calendar.HOUR_OF_DAY, 12);
    noon.set(Calendar.MINUTE, 0);
    noon.set(Calendar.SECOND, 0);
    noon.set(Calendar.MILLISECOND, 0);
    ca.setTime(noon.getTimeInMillis());
    long sunriseTimeMillis = ca.getSunRiseSet(true);
    long sunsetTimeMillis = ca.getSunRiseSet(false);
    if (sunsetTimeMillis < timeMillis) {
        noon.add(Calendar.DATE, 1);
        ca.setTime(noon.getTimeInMillis());
        sunriseTimeMillis = ca.getSunRiseSet(true);
    } else if (sunriseTimeMillis > timeMillis) {
        noon.add(Calendar.DATE, -1);
        ca.setTime(noon.getTimeInMillis());
        sunsetTimeMillis = ca.getSunRiseSet(false);
    }
    return new TwilightState(sunriseTimeMillis, sunsetTimeMillis);
}

Example 9 with CalendarAstronomer

use of android.icu.impl.CalendarAstronomer in project j2objc by google.

the class ChineseCalendar method readObject.

/**
 * Override readObject.
 */
private void readObject(ObjectInputStream stream) throws IOException, ClassNotFoundException {
    epochYear = CHINESE_EPOCH_YEAR;
    zoneAstro = CHINA_ZONE;
    stream.defaultReadObject();
    /* set up the transient caches... */
    astro = new CalendarAstronomer();
    winterSolsticeCache = new CalendarCache();
    newYearCache = new CalendarCache();
}

Example 10 with CalendarAstronomer

use of android.icu.impl.CalendarAstronomer in project j2objc by google.

the class AstroTest method TestBasics.

@Test
public void TestBasics() {
    // Check that our JD computation is the same as the book's (p. 88)
    CalendarAstronomer astro = new CalendarAstronomer();
    GregorianCalendar cal3 = new GregorianCalendar(TimeZone.getTimeZone("GMT"), Locale.US);
    DateFormat d3 = DateFormat.getDateTimeInstance(cal3, DateFormat.MEDIUM, DateFormat.MEDIUM, Locale.US);
    cal3.clear();
    cal3.set(Calendar.YEAR, 1980);
    cal3.set(Calendar.MONTH, Calendar.JULY);
    cal3.set(Calendar.DATE, 27);
    astro.setDate(cal3.getTime());
    double jd = astro.getJulianDay() - 2447891.5;
    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();
}