From abbdbe64d12af732983bc11aac772d3d32682bb5 Mon Sep 17 00:00:00 2001
From: Adrian Kummerlaender
Date: Mon, 20 Jan 2020 22:40:44 +0100
Subject: Extract OpenCL setup into Renderer

---
 sun.py | 32 --------------------------------
 1 file changed, 32 deletions(-)
 delete mode 100644 sun.py

(limited to 'sun.py')

diff --git a/sun.py b/sun.py
deleted file mode 100644
index 7ceec5d..0000000
--- a/sun.py
+++ /dev/null
@@ -1,32 +0,0 @@
-import numpy as np
-from datetime import datetime
-
-## Sun direction depending on time and place
-# As described in Appendix D of "ME 4131 Thermal Environmental Engineering Laboratory Manual"
-
-def sun_declination(time):
-    day_of_year = time.timetuple().tm_yday
-    return 23.45 * np.sin(np.radians((360/365)*(284+day_of_year)))
-
-def equation_of_time(time):
-    day_of_year = time.timetuple().tm_yday
-    b = np.radians(360*(day_of_year-81)/364)
-    return 0.165*np.sin(2*b) - 0.126*np.cos(b) - 0.025*np.sin(b)
-
-def sun_direction(lat, lon, time, time_diff, summertime_shift = 0):
-    lon_std = time_diff * 15
-    clock_time       = time.hour + time.minute/60
-    local_solar_time = clock_time + (1/15)*(lon - lon_std) + equation_of_time(time) - summertime_shift
-    hour_angle = 15*(local_solar_time - 12)
-
-    l = np.radians(lat)
-    h = np.radians(hour_angle)
-    d = np.radians(sun_declination(time))
-
-    altitude = np.arcsin(np.cos(l) * np.cos(h) * np.cos(d) + np.sin(l) * np.sin(d))
-    azimuth  = np.arccos((np.cos(d) * np.sin(l) * np.cos(h) - np.sin(d) * np.cos(l)) / np.cos(altitude))
-
-    if h < 0:
-        return (altitude,  azimuth)
-    else:
-        return (altitude, -azimuth)
-- 
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