Solar azimuth and elevation

[Guest cberbecaru]

Hi,

 

Here is a stripped down LUA port of the SunCalc JavaScript library by Vladimir Agafonkin (@mourner)

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I've done some minor modifications to the code, mainly due to the fact that the original functions returned the result in radians. Also, the result was negative or positive relative to the South direction, so I converted it to heading in degrees: 0 - North, 90 - East, 180 - South, 270 - West. I've ported just the azimuth and elevation computation (for now).

 

The scene updates 2 simple global variables (must be created first, names can be changed), and based on these variables, scenes can be triggered, or a VD can display the data. Tested by entering Vladimir's data (see test.js) and by knowing that today at 13:26 was solar noon at my location (180° azimuth at that time - see attached picture).

 

I use this scene to drive my sunshades through the day when is hot outside

 

 

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Edited June 11, 2017 by cberbecaru