Find multiple roof high points / heights for a single volume mesh

Grasshopper
1

I am trying to select the differnt hight points of a building volume to understand how many levels each area has but have no idea where to start with this script.

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image893×800 67.2 KB

So for each of the larger areas evaluate the top surface and
230809_Roof heights.gh (51.6 KB)
it’s z value.

2

Hi @user23 ,

Our options are more limited given that it is a single mesh, but we can exploit the surface normals to detect horizontal/close to horizontal surfaces only and then filter the results to return the largest of those horizontal surfaces, giving you the large roof surfaces you are after.

Graph Space:

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image702×697 59.9 KB

Model Space:

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image693×679 78.3 KB

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image771×650 59.4 KB

Let me know if this meets your purposes,

Thanks!

20230809_Roof heights_Response_01a.gh (65.1 KB)

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3

Thank you! this was really helpful - I think it does what it needs for now

1 Like
4

Happy to help, if you have additional requirements come up down line I’d recommend making a new post with the updated needs and linking back to this post if needed

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