[Radiance-general] View from sun position

[Achim Geissler]

Dear all,

thank you all for your help! The little tool and additional information from
Raphaël did the trick for me - no additional brain-work necessary which was
good due to the brain-cooking temperatures around here, the past days.

@Robert: If the script surfaces, as "hunter-and-gatherer" I would still be
interested, though.

Best
Achim

-----Ursprüngliche Nachricht-----
Von: Guglielmetti, Robert [mailto:Robert.Guglielmetti at nrel.gov] 
Gesendet: Montag, 6. Juli 2015 16:24
An: radiance-general at radiance-online.org
Betreff: Re: [Radiance-general] View from sun position

John Mardaljevic shared a nifty little shell script at the 2003 Radiance
Workshop that automated the generation and rendering of solar viewpoints for
a whole day; it leveraged this information from Gensky as Thomas points out.
I used John's script a few times for work and modified it for an art project
as well, but I cannot find any of that stuff at the moment. If I unearth it
I'll post a sample of John's code, but as Thomas points out Gensky gives you
most of the info you need to do this.

- Rob

On 7/3/15, 6:23 AM, "Thomas Bleicher"
<tbleicher at gmail.com<mailto:tbleicher at gmail.com>> wrote:

Gensky gives you the sun angle as a comment. You still have to convert it to
a view vector and calculate the actual camera location yourself.


Achim Geissler
<achim.geissler at intergga.ch<mailto:achim.geissler at intergga.ch>> wrote:
Dear all,


it should be possible to automate a viewpoint as "view from the sun
position" in order to generate a sequence of images over a day, for example.
Sadly, I was unable to find anything on the net or in Rendering with
Radiance to this end. Does anyone know a good source - I would want to avoid
having to do the vector maths, myself ;o) ?


Thanks.


Best
Achim


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