Hi Guys, I am dealing with mountains again. Is there a way to outline / with curve more or less flat zones of the terrain. With max slope control. Say from 5 degrees to 10 degrees make flat zones. See attached sketch. If I can get a closed curve I can then just make a flat surface to form a bas…

I can extract points of the mesh which have a small difference in slope angle. Meaning the areas are almost flat. But how to connect them into islands of flat surfaces following contours? [40] So basically blue zones should be flat but on different heights.

Site_Flat_Areas_LD.gh (227.7 KB) If I understand well it is quite easy with Mesh Iso Splitting [image] [image] Mesh split Grasshopper You can try mesh iso splitting but you will get triangular faces. For each vertex you have to put a weight could be X, Y or Z dependin…

Thank you LD It is what I need. Is it your custom C sharp component ? Is there a way to do it with native Grasshopper tools?

It is my custom C#, as it is a standard C# component, don’t whory there are no limitations. It could be doable to make something similar but just for faces. So you have to measure the angle of each face and then keep just the faces that have a normal less than X°. Then join the mesh. Then disjoin …

Cool thank you it is what I need. I can then select all points of naked edges and create smooth contour lines of flat zones.

Hi LD, How would you go about creating a simple curved (in plan) shapes. Almost like terraces from the contours. So it looks like simplified stepping areas with stripes about 50m wide? I think what I have to do is to find a way to create a new contours projected on a terrain surface but so the con…

Maybe I have to Use surfaces and not a mesh?

Here is what I need to do. Exclude hilly parts from surface Create new contours - 50m apart Offset contours by 50m to create steps/terraces in less hilly areas here is the sketch [39] Site_Flat_Areas_03.gh (247.6 KB) Site_Flat_Areas.3dm (19.4 MB)

I almost managed to split an existing surface / topography based on slope angle. For this I was using LD custom C#. But I definitely doing it wrong as to create sections of different slope ranges I have to create a new mesh every time. Need a little help … Also surface split is terrible as there …

Terrain Approximating Flat zones

Grasshopper

laurent_delrieu (Laurent Delrieu) October 18, 2019, 9:38pm 14

The component in this discussion is for multiple iso splitting

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Terrain Approximating Flat zones

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