Outline curves of a floor plan

[Kevin_Scholtyssek]

hey @all,

i got some wall bottom surfaces representing floorplans. i would like to get the “convex hull” of them for each of the elevations, almost like the perimeter curve of the slabs.. but without the cutting…

any thoughts on this?

kind regards

[AndersDeleuran]

@Kevin_Scholtyssek

almost like the perimeter curve of the slabs.. but without the cutting

You could get their edges and then run Curve.CreateBooleanRegions with combine set to true:

Get outline (region) of points

Hehe, to be fair it’s like four lines of code, but indeed: [2024-07-12 08_54_54-Grasshopper - unnamed] 240712_CreateBooleanRegions_00.gh (6.8 KB) I think patching in RhinoCommon functionality that is missing/has yet to implemented in Grasshopper is an excellent reason for/occasion to pick up scripting. It’s usually very little code required and will require one to start understanding the API, which outside of learning Python/C# is really the secret sauce here! I put together a GHPython begi…

[Joseph_Oster]

No file?

[scottd (Scott Davidson)]

Without the file it is hard to see what the problem actually is, as @Joseph_Oster replied.

Normally using Region Union would work for this:

But there are situations it could get confused. And I would make sure there are no hatching in the walls. Hard to see from the image if that is the case.

In Rhino, using CurveBoolean command and a single click outside the floor plan will result in an outline.

[Kevin_Scholtyssek]

ifc reader_translate tryout2.gh (31.8 KB) yes sorry forgot to add the file…

[scottd (Scott Davidson)]

Can you read in the IFC and send us the resulting 3DM? I see the definition is reading a IFC at the start. The Curves on IFCSlab is what we could use to test this.