# -*- python -*- ''' xpybar – xmobar replacement written in python Copyright © 2014, 2015, 2016 Mattias Andrée (maandree@member.fsf.org) This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . ''' import solar_python class Solar: ''' Solar information ''' SOLAR_ELEVATION_SUNSET_SUNRISE = solar_python.SOLAR_ELEVATION_SUNSET_SUNRISE ''' :float The Sun's elevation at sunset and sunrise, measured in degrees ''' SOLAR_ELEVATION_CIVIL_DUSK_DAWN = solar_python.SOLAR_ELEVATION_CIVIL_DUSK_DAWN ''' :float The Sun's elevation at civil dusk and civil dawn, measured in degrees ''' SOLAR_ELEVATION_NAUTICAL_DUSK_DAWN = solar_python.SOLAR_ELEVATION_NAUTICAL_DUSK_DAWN ''' :float The Sun's elevation at nautical dusk and nautical dawn, measured in degrees ''' SOLAR_ELEVATION_ASTRONOMICAL_DUSK_DAWN = solar_python.SOLAR_ELEVATION_ASTRONOMICAL_DUSK_DAWN ''' :float The Sun's elevation at astronomical dusk and astronomical dawn, measured in degrees ''' SOLAR_ELEVATION_AMATEUR_ASTRONOMICAL_DUSK_DAWN = solar_python.SOLAR_ELEVATION_AMATEUR_ASTRONOMICAL_DUSK_DAWN ''' :float The Sun's elevation at amateur astronomical dusk and amateur astronomical dawn, measured in degrees ''' SOLAR_ELEVATION_RANGE_TWILIGHT = solar_python.SOLAR_ELEVATION_RANGE_TWILIGHT ''' :(float, float) The Sun's lowest and highest elevation during all periods of twilight, measured in degrees ''' SOLAR_ELEVATION_RANGE_CIVIL_TWILIGHT = solar_python.SOLAR_ELEVATION_RANGE_CIVIL_TWILIGHT ''' :(float, float) The Sun's lowest and highest elevation during civil twilight, measured in degrees ''' SOLAR_ELEVATION_RANGE_NAUTICAL_TWILIGHT = solar_python.SOLAR_ELEVATION_RANGE_NAUTICAL_TWILIGHT ''' :(float, float) The Sun's lowest and highest elevation during nautical twilight, measured in degrees ''' SOLAR_ELEVATION_RANGE_ASTRONOMICAL_TWILIGHT = solar_python.SOLAR_ELEVATION_RANGE_ASTRONOMICAL_TWILIGHT ''' :(float, float) The Sun's lowest and highest elevation during astronomical twilight, measured in degrees ''' SOLAR_ELEVATION_RANGE_AMATEUR_ASTRONOMICAL_TWILIGHT = solar_python.SOLAR_ELEVATION_RANGE_AMATEUR_ASTRONOMICAL_TWILIGHT ''' :(float, float) The Sun's lowest and highest elevation during amateur astronomical twilight, measured in degrees ''' SOLAR_ELEVATION_RANGE_GOLDEN_HOUR = solar_python.SOLAR_ELEVATION_RANGE_GOLDEN_HOUR ''' :(float, float) The Sun's lowest and highest elevation during the golden "hour" (also known as magic hour), measured in degrees. These elevations are approximate. ''' SOLAR_ELEVATION_RANGE_BLUE_HOUR = solar_python.SOLAR_ELEVATION_RANGE_BLUE_HOUR ''' :(float, float) The Sun's lowest and highest elevation during the blue "hour", measured in degrees. These elevations are approximate. ''' EQUINOX = 0 SUMMER = 1 WINTER = 2 def __init__(self, latitude, longitude, t = None): ''' Constructor @param latitude:float The latitude in degrees northwards from the equator, negative for southwards @param longitude:float The longitude in degrees eastwards from Greenwich, negative for westwards @param t:float? The time in Julian Centuries, `None` for the current time of when the functions are called ''' self.lat = latitude self.lon = longitude self.t = t self.u = solar_python.julian_centuries_to_epoch def now(self): return solar_python.julian_centuries() if self.t is None else self.t def season(self): t = self.now() rc = Solar.SUMMER + solar_python.is_summer(self.lat, t) rc += Solar.WINTER + solar_python.is_winter(self.lat, t) return rc % 3 def have_sunrise_and_sunset(self): ''' Determine whether solar declination currently is so that there can be sunrises and sunsets. If not, you either have 24-hour daytime or 24-hour nighttime. @return Whether there can be sunrises and sunsets where you are located ''' return solar_python.have_sunrise_and_sunset(self.lat, self.now()) def declination(self): ''' Calculates the Sun's declination @return :float The Sun's declination, in degrees ''' return solar_python.degrees(solar_python.solar_declination(self.now())) def elevation(self): ''' Calculates the Sun's elevation as apparent from a geographical position @return :float The Sun's apparent at the specified time as seen from the specified position, measured in degrees ''' return solar_python.solar_elevation(self.lat, self.lon, self.now()) def future_equinox(self): ''' Predict the time point of the next equinox @return :float The calculated time point, in POSIX time ''' return self.u(solar_python.future_equinox(self.now())) def past_equinox(self): ''' Predict the time point of the previous equinox @return :float The calculated time point, in POSIX time ''' return self.u(solar_python.past_equinox(self.now())) def future_solstice(self): ''' Predict the time point of the next solstice @return :float The calculated time point, in POSIX time ''' return self.u(solar_python.future_solstice(self.now())) def past_solstice(self): ''' Predict the time point of the previous solstice @return :float The calculated time point, in POSIX time ''' return self.u(solar_python.past_solstice(self.now())) def future_elevation(self, elevation): ''' Predict the time point of the next time the Sun reaches a specific elevation @param elevation:float The elevation of interest @return :float? The calculated time point, in POSIX time, `None` if none were found within a year ''' return self.u(solar_python.future_elevation(self.lat, self.lon, elevation, self.now())) def past_elevation(self, elevation): ''' Predict the time point of the previous time the Sun reached a specific elevation @param elevation:float The elevation of interest @return :float? The calculated time point, in POSIX time, `None` if none were found within a year ''' return self.u(solar_python.past_elevation(self.lat, self.lon, elevation, self.now())) def future_elevation_derivative(self, derivative): ''' Predict the time point of the next time the Sun reaches a specific elevation derivative @param derivative:float The elevation derivative value of interest @return :float? The calculated time point, in POSIX time, `None` if none were found within a year ''' return self.u(solar_python.future_elevation_derivative(self.lat, self.lon, derivative, self.now())) def past_elevation_derivative(self, derivative): ''' Predict the time point of the previous time the Sun reached a specific elevation derivative @param derivative:float The elevation derivative value of interest @return :float? The calculated time point, in POSIX time, `None` if none were found within a year ''' return self.u(solar_python.past_elevation_derivative(self.lat, self.lon, derivative, self.now()))