[Radiance-general] Interpolate BSDFs
Greg Ward
gregoryjward at gmail.com
Mon Feb 17 13:55:47 PST 2014
Hi Germán,
You can compute the total hemispherical transmittance for a particular incident angle using the bsdf library, which is also reported to the standard error by bsdf2rad when you run it.
Best,
-Greg
> From: CHI-German Molina <gmolina at hdlao.com>
> Date: February 17, 2014 12:38:49 PM GMT+01:00
>
> Hello Greg, and thanks for your answer.
>
> I did not know of the existence of bsdf2rad, I will try it soon... also, I think I will forget about interpolating, haha.
>
> Is it possible to integrate the outgoing radiation with TT??? My idea is to just plot DIRECTIONAL transmittance, so people can choose one or another shading device for their designs. I want to explore the posibility of overlaying these plots with a solar plot of a certain location, and choose a device that blocks the Solar Heat Gains when needed.
>
> THANKS A LOT
>
>
> 2014-02-14 14:50 GMT-03:00 Greg Ward <gregoryjward at gmail.com>:
> Hi Germán,
>
> Why not use a tensor tree output of genBSDF in this case? High resolution on incoming and outgoing angles where it matters is why it was developed. You can use the C routines to query the TT directly, or use bsdf2rad to generate a Radiance model for visualization.
>
> Cheers,
> -Greg
>
>> From: CHI-German Molina <gmolina at hdlao.com>
>> Date: February 14, 2014 8:17:12 AM PST
>>
>> Hi Lars, Thanks a lot for the quick answer, but I think my question was not really clear.
>>
>> What I want to achieve is to get the directional transmitance from" any" angle. Interpolating would allow me getting a continuous (although not really exact) value. This is mainly for visualization purposes, not really for getting exact values. By increasing the number of patches I would have a better resolution, but still I would have "bins" and not a continuous value.
>>
>> I hope is clear. If it is too hard (i.e. there is not any program that does it for me), I can just increase the number of bins, and just smooth the final image.
>>
>> Thanks a lot!
>>
>> Germán
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