I’m a bit of a Noob and have fully got stuck into the HB Radiance toolset and very much enjoying the flexibility and functionality. However I’m a bit stumped. Is there a “simple” way to use the Radiance direct sun hours recipe to show only the hours upon a horizontal grid of reflected sunlight? I’ve modelled a simple cube building with a mirrored façade using HBMirror modifier.
If not can anyone point me down a rabbit hole and methodology to achieve this?
You could run an annual irradiance simulation, with a “normal” amount of ambient bounces, and one without ambient bounces. Subtract without from normal, and there is you answer.
Thanks for the feedback. That’s exactly what I was trying but there doesn’t seem to be an option for -ab or any radiance parameters. Is there a way to control bounces in the rad Direct Sun recipe?
You can’t use direct hours that way, as far as I know.
But annual irradiance simulation can be used that way, the result is then energy not hours.
Peraps Surface Ray Tracing - Ladybug Primer would give you a satisfactory answer. While not a perfect fit either.
Look for the H
B_RadianceParameters component. There you can set your ownsimulation parameters.
Yes, I tried that as well. Was fine for point in time and, as you say, displays energy not hours, but I’d need a whole year of reflected sunlight (preferable in a time format).
You could run it for the year.
Find hourly values of reflected as described above.
Then count hours with values.
Is possible. But requires some footwork.