Grasshopper

algorithmic modeling for Rhino

South facing surfaces

Hello,

I'm doing a sunlight hours analysis on a group of buildings and am interested specifically in their south facing facades. If anyone can tell me what is the best way to select surfaces according to the direction they are facing it would be greatly appreciated.

thanks!

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Permalink Reply by Mostapha Sadeghipour Roudsari on January 24, 2016 at 7:29am

You can check the angle between normal of the surfaces and south vector. Here is an example.

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Permalink Reply by Neta Steingart on January 25, 2016 at 1:07am

worked perfectly, thanks for the quick reply!

Permalink Reply by Anton Szilasi on January 26, 2016 at 8:52am

You're a guru Mostapha very useful thankyou!

Permalink Reply by Faith Sa on March 1, 2017 at 7:38pm

Could this be in any way useful for a low-CPU-load process of finding the visible surface(s) of buildings to one particular building? I have made a definition but I think it's not the best way to do it and it's also buggy.

Permalink Reply by Mostapha Sadeghipour Roudsari on March 2, 2017 at 5:59am

Check the view analysis component.

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