1 files changed, 61 insertions, 0 deletions
diff --git a/xpybar/config/bin/sun b/xpybar/config/bin/sun
new file mode 100644
index 0000000..072542c
--- /dev/null
+++ b/xpybar/config/bin/sun
@@ -0,0 +1,61 @@
+# -*- python -*-
+import os
+
+# Geographical coodinates.
+try:
+    with open(os.getenv("XDG_CONFIG_HOME") + "/geolocation", 'rb') as file:
+        latitude, longitude = file.read().split(b'\n')[0].decode('utf-8', 'replace').split(' ')
+        latitude, longitude = float(latitude), float(longitude)
+except:
+    with open("/etc/geolocation", 'rb') as file:
+        latitude, longitude = file.read().split(b'\n')[0].decode('utf-8', 'replace').split(' ')
+        latitude, longitude = float(latitude), float(longitude)
+
+# The colour temperature at day and at night.
+temperature_day, temperature_night = 5500, 3500
+
+
+# Get current time.
+now   = epoch()
+now_m = now - 1
+now_p = now + 1
+now_d = now_p - now_m
+now   = epoch_to_julian_centuries(now)
+now_m = epoch_to_julian_centuries(now_m)
+now_p = epoch_to_julian_centuries(now_p)
+
+# The visibility of the Sun.
+dayness   = sun(latitude, longitude, now)
+dayness_m = sun(latitude, longitude, now_m)
+dayness_p = sun(latitude, longitude, now_p)
+dayness_d = (dayness_p - dayness_m) / now_d
+
+# The Sun's elevation.
+elevation   = solar_elevation(latitude, longitude, now)
+elevation_m = solar_elevation(latitude, longitude, now_m)
+elevation_p = solar_elevation(latitude, longitude, now_p)
+elevation_d = (elevation_p - elevation_m) / now_d
+
+# Calculation of the colour temperature.
+temperature   = temperature_day * dayness   + temperature_night * (1 - dayness)
+temperature_m = temperature_day * dayness_m + temperature_night * (1 - dayness_m)
+temperature_p = temperature_day * dayness_p + temperature_night * (1 - dayness_p)
+temperature_d = (temperature_p - temperature_m) / now_d
+
+# Calculate the whitepoint with adjusted colour temperature.
+whitepoint = divide_by_maximum(cmf_10deg(temperature))
+whitepoint = [str(int(c * 255 + 0.5)) for c in whitepoint]
+whitepoint = ';'.join(whitepoint)
+
+# Convert derivative to per minutes from per seconds.
+temperature_d *= 60
+elevation_d *= 60
+dayness_d *= 60
+
+
+# Print information.
+dayness *= 100
+dayness_d *= 100
+output = '\033[38;2;%sm%i\033[0mK %.1fK/m %.1f° %.2f°/m %.0f%% %.1f%%/m'
+output %= (whitepoint, temperature, temperature_d, elevation, elevation_d, dayness, dayness_d)
+print(output)