Examples of com.ibm.icu.impl.CalendarAstronomer$Horizon

com.ibm.icu.impl.CalendarAstronomer
Represents the position of an object in the sky relative to the local horizon. The Altitude represents the object's elevation above the horizon, with objects below the horizon having a negative altitude. The Azimuth is the geographic direction of the object from the observer's position, with 0 representing north. The azimuth increases clockwise from north.
Note that Horizon objects are immutable and cannot be modified once they are constructed. This allows them to be passed and returned by value without worrying about whether other code will modify them. @see CalendarAstronomer.Ecliptic @see CalendarAstronomer.Equatorial @internal

        bcal.add(Calendar.MONTH, 1);
        /*Date d = */bcal.getTime();


        // CalendarAstronomer
        // (This class should probably be made package-private.)
        CalendarAstronomer astro = new CalendarAstronomer();
        /*String s = */astro.local(0);


        // ChineseCalendar
        ChineseCalendar ccal = new ChineseCalendar(TimeZone.getDefault(),
                                                   Locale.getDefault());
        ccal.add(Calendar.MONTH, 1);

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    static final double PI = Math.PI;


    public void TestSolarLongitude() {
        GregorianCalendar gc = new GregorianCalendar(new SimpleTimeZone(0, "UTC"));
        CalendarAstronomer astro = new CalendarAstronomer();
        // year, month, day, hour, minute, longitude (radians), ascension(radians), declination(radians)
        final double tests[][] = {
            { 1980, 7, 27, 00, 00, 2.166442986535465, 2.2070499713207730, 0.3355704075759270 },
            { 1988, 7, 27, 00, 00, 2.167484927693959, 2.2081183335606176, 0.3353093444275315 },
        };
        logln("");
        for (int i = 0; i < tests.length; i++) {
            gc.clear();
            gc.set((int)tests[i][0], (int)tests[i][1]-1, (int)tests[i][2], (int)tests[i][3], (int) tests[i][4]);


            astro.setDate(gc.getTime());


            double longitude = astro.getSunLongitude();
            if (longitude != tests[i][5]) {
                if ((float)longitude == (float)tests[i][5]) {
                    logln("longitude(" + longitude +
                            ") !=  tests[i][5](" + tests[i][5] +
                            ") in double for test " + i);
                } else {
                    errln("FAIL: longitude(" + longitude +
                            ") !=  tests[i][5](" + tests[i][5] +
                            ") for test " + i);
                }
            }
            Equatorial result = astro.getSunPosition();
            if (result.ascension != tests[i][6]) {
                if ((float)result.ascension == (float)tests[i][6]) {
                    logln("result.ascension(" + result.ascension +
                            ") !=  tests[i][6](" + tests[i][6] +
                            ") in double for test " + i);

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        }
    }


    public void TestLunarPosition() {
        GregorianCalendar gc = new GregorianCalendar(new SimpleTimeZone(0, "UTC"));
        CalendarAstronomer astro = new CalendarAstronomer();
        // year, month, day, hour, minute, ascension(radians), declination(radians)
        final double tests[][] = {
            { 1979, 2, 26, 16, 00, -0.3778379118188744, -0.1399698825594198 },
        };
        logln("");


        for (int i = 0; i < tests.length; i++) {
            gc.clear();
            gc.set((int)tests[i][0], (int)tests[i][1]-1, (int)tests[i][2], (int)tests[i][3], (int) tests[i][4]);
            astro.setDate(gc.getTime());


            Equatorial result = astro.getMoonPosition();
            if (result.ascension != tests[i][5]) {
                if ((float)result.ascension == (float)tests[i][5]) {
                    logln("result.ascension(" + result.ascension +
                            ") !=  tests[i][5](" + tests[i][5] +
                            ") in double for test " + i);

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            }
        }
    }


    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());
    }

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    }


    public void TestCoverage() {
        GregorianCalendar cal = new GregorianCalendar(1958, Calendar.AUGUST, 15);
        Date then = cal.getTime();
        CalendarAstronomer myastro = new CalendarAstronomer(then);


        //Latitude:  34 degrees 05' North
        //Longitude:  118 degrees 22' West
        double laLat = 34 + 5d/60, laLong = 360 - (118 + 22d/60);
        CalendarAstronomer myastro2 = new CalendarAstronomer(laLong, laLat);


        double eclLat = laLat * Math.PI / 360;
        double eclLong = laLong * Math.PI / 360;
        Ecliptic ecl = new Ecliptic(eclLat, eclLong);
        logln("ecliptic: " + ecl);


        CalendarAstronomer myastro3 = new CalendarAstronomer();
        myastro3.setJulianDay((4713 + 2000) * 365.25);


        CalendarAstronomer[] astronomers = {
            myastro, myastro2, myastro3, myastro2 // check cache


        };


        for (int i = 0; i < astronomers.length; ++i) {
            CalendarAstronomer astro = astronomers[i];


            logln("astro: " + astro);
            logln("   time: " + astro.getTime());
            logln("   date: " + astro.getDate());
            logln("   cent: " + astro.getJulianCentury());
            logln("   gw sidereal: " + astro.getGreenwichSidereal());
            logln("   loc sidereal: " + astro.getLocalSidereal());
            logln("   equ ecl: " + astro.eclipticToEquatorial(ecl));
            logln("   equ long: " + astro.eclipticToEquatorial(eclLong));
            logln("   horiz: " + astro.eclipticToHorizon(eclLong));
            logln("   sunrise: " + new Date(astro.getSunRiseSet(true)));
            logln("   sunset: " + new Date(astro.getSunRiseSet(false)));
            logln("   moon phase: " + astro.getMoonPhase());
            logln("   moonrise: " + new Date(astro.getMoonRiseSet(true)));
            logln("   moonset: " + new Date(astro.getMoonRiseSet(false)));
            logln("   prev summer solstice: " + new Date(astro.getSunTime(CalendarAstronomer.SUMMER_SOLSTICE, false)));
            logln("   next summer solstice: " + new Date(astro.getSunTime(CalendarAstronomer.SUMMER_SOLSTICE, true)));
            logln("   prev full moon: " + new Date(astro.getMoonTime(CalendarAstronomer.FULL_MOON, false)));
            logln("   next full moon: " + new Date(astro.getMoonTime(CalendarAstronomer.FULL_MOON, true)));
        }


    }

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        throws IOException, ClassNotFoundException
    {
        stream.defaultReadObject();
        
        /* set up the transient caches... */
        astro = new CalendarAstronomer();
        winterSolsticeCache = new CalendarCache();
        newYearCache = new CalendarCache();
    }

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        zoneAstro = CHINA_ZONE;


        stream.defaultReadObject();


        /* set up the transient caches... */
        astro = new CalendarAstronomer();
        winterSolsticeCache = new CalendarCache();
        newYearCache = new CalendarCache();
    }

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        throws IOException, ClassNotFoundException
    {
        stream.defaultReadObject();
        
        /* set up the transient caches... */
        astro = new CalendarAstronomer();
        winterSolsticeCache = new CalendarCache();
        newYearCache = new CalendarCache();
    }

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        throws IOException, ClassNotFoundException
    {
        stream.defaultReadObject();
        
        /* set up the transient caches... */
        astro = new CalendarAstronomer();
        winterSolsticeCache = new CalendarCache();
        newYearCache = new CalendarCache();
    }

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        throws IOException, ClassNotFoundException
    {
        stream.defaultReadObject();
        
        /* set up the transient caches... */
        astro = new CalendarAstronomer();
        winterSolsticeCache = new CalendarCache();
        newYearCache = new CalendarCache();
    }

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Related Classes of com.ibm.icu.impl.CalendarAstronomer$Horizon

com.ibm.icu.dev.test.calendar.AstroTest

com.ibm.icu.dev.test.calendar.IBMCalendarTest

com.ibm.icu.util.ChineseCalendar

java.util.Date

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