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| author | Mattias Andrée <maandree@operamail.com> | 2014-06-05 03:00:22 +0200 |
|---|---|---|
| committer | Mattias Andrée <maandree@operamail.com> | 2014-06-05 03:00:22 +0200 |
| commit | 29e00ab8d30a7ab687c9bf9e92c8a43b382bad39 (patch) | |
| tree | e100850749a6fd635498c57e74d31449624682cf /src | |
| parent | m doc + add equinox prediction (diff) | |
| download | blueshift-29e00ab8d30a7ab687c9bf9e92c8a43b382bad39.tar.gz blueshift-29e00ab8d30a7ab687c9bf9e92c8a43b382bad39.tar.bz2 blueshift-29e00ab8d30a7ab687c9bf9e92c8a43b382bad39.tar.xz | |
m
Signed-off-by: Mattias Andrée <maandree@operamail.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/solar.py | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/src/solar.py b/src/solar.py index da02c6c..34233be 100644 --- a/src/solar.py +++ b/src/solar.py @@ -448,21 +448,21 @@ def have_sunrise_and_sunset(latitude, t = None): return -90 - d < latitude < 90 + d ## Northern winter -# TODO document and demo +# TODO document def is_summer(latitude, t = None): t = julian_centuries() if t is None else t d = solar_declination(t) return (d > 0) == (latitude > 0) -# TODO document and demo +# TODO document def is_winter(latitude, t = None): t = julian_centuries() if t is None else t d = solar_declination(t) return not ((d > 0) == (latitude > 0)) -# TODO document and demo +# TODO document def future_past_equinox(delta, t = None): epsilon = 0.000001 t = julian_centuries() if t is None else t @@ -499,12 +499,12 @@ def future_past_equinox(delta, t = None): return None -# TODO document and demo +# TODO document def future_equinox(t = None): return future_past_equinox(0.01 / 2000, t) -# TODO document and demo +# TODO document def past_equinox(t = None): return future_past_equinox(0.01 / -2000, t) @@ -581,7 +581,7 @@ def past_elevation(latitude, longitude, elevation, t = None): return future_past_elevation(0.01 / -2000, latitude, longitude, elevation, t) -# TODO: This algorithm is inprecise, gives an incorrent sunrise and I do not fully know its behaviour +# TODO: This algorithm is imprecise, gives an incorrent sunrise and I do not fully know its behaviour def sunrise_equation(latitude, longitude, t = None): j_cent = julian_centuries() if t is None else t j_date = julian_centuries_to_julian_day(j_cent) @@ -601,3 +601,4 @@ def sunrise_equation(latitude, longitude, t = None): sunset = 2451545.0009 + (hour_angle + longitude) / 360 + j_cycle + solar_transit - approx_solar_noon sunrise = 2 * solar_transit - sunset return (julian_day_to_julian_centuries(sunset), julian_day_to_julian_centuries(sunrise)) + |