POV-Ray: Newsgroups: povray.general: Brain. All. Hurty.

POV-Ray : Newsgroups : povray.general : Brain. All. Hurty.		Server Time 25 Dec 2024 14:35:00 EST (-0500)

From: Bryan Valencia
Subject: Brain. All. Hurty.
Date: 15 Oct 2007 19:07:03
Message: <4713f297$1@news.povray.org>

Can someone take the info here:

http://www.agric.wa.gov.au/pls/portal30/docs/FOLDER/IKMP/_archive/tr137.pdf


And write a function to give the rotation angle of the sun for a given 
latitude at a certain time of day?

something like

#function Sun_Angle(float_latitude, int_month, int_day, int_hour24, 
int_minute)



We can assume that the initial sun is on the +y axis and that "north" is 
  along the +z axis.


The result should be a single vector that can be used to rotate the 
initial light_source and/or round ball representing the sun so that it 
is correct for the time and place.

I tried to do this but my brain got all hurty.

Plus I'm kind of at work.


-- 
---
Bryan Valencia

- I'd rather live with false hope than with false despair.

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From: Kyle
Subject: Re: Brain. All. Hurty.
Date: 15 Oct 2007 23:32:03
Message: <v3c8h3poild11230ukcd1ihsbk7rkfgaj2@4ax.com>

In case you don't already know, there is a sunpos include file with POV-Ray that may
do what you
want.

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From: Bryan Valencia
Subject: Re: Brain. All. Hurty.
Date: 16 Oct 2007 14:58:15
Message: <471509c7$1@news.povray.org>

Kyle wrote:
> In case you don't already know, there is a sunpos include file with POV-Ray that may
do what you
> want.
> 
crap!  I spent an hour yesterday trying to hash that all out!  It was 
right under my nose!

I'll look at that immediately.

-- 
Bryan Valencia

"I'd rather live with false hope than with false despair."

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