[Radiance-general] RGB values for different glazings

[Jack de Valpine]

Hi Rob,

Rob Guglielmetti wrote:
> Jack de Valpine wrote:
>
>>
>> Probably the best way to get a more sophisticated material 
>> description for a specific glazing make-up is to export glazing specs 
>> from Optics one at a time (ie the glass used for surface 1/2 as one 
>> export and the glass used for surface 3/4 as another export) and then 
>> use the RGB and specularity values with the glaze.csh script that 
>> comes with Radiance. The script will enable you to output a more 
>> sophisticated material definition that better accounts for angular 
>> dependencies in the material. Note that the geometry is normal 
>> dependent, requiring that the glass geometry be modeled with the 
>> normal being pointed to the interior of the building (hope I got this 
>> right, I am working off memory here).
>
> Hi Jack,
>
> I forgot all about glaze!!  Thanks for the reminder.  I also had no 
> idea that Greg added the ability to read in files; this makes it 
> infinitely more useful. I assume you simply take all the 
> glazing/coatings you want and export each to a radiance file from 
> Optics5, and then feed them to glaze with the -f switch, huh?  That's 
> great, you guys.  Thanks again to Greg for the work, and Jack is being 
> very modest in his post by mentioning the tool but not mentioning the 
> fact that his company funded the work.  Thanks to you both.
>
Unfortunately it is not quite that streamlined.... The -f switch takes a 
file with specific formatting (one glazing description per line) which 
is then parsed by the glaze script. I think that if you run glaze -f 
with nothing else it will spit out the formatting requirements... I 
should probably come up with an example to show this... Let me see what 
I can do by way of example on this to demonstrate how it works. You are 
right though that the -f switch makes it way more convenient to use 
glaze for specific libraries of glazing on a per project basis.
> And yes, the normal should face into the building. (the script 
> actually throws up a nice little ASCII section for reference. =8-)
>
> - Rob
>
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>

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