Question About Brep Plane Section in Grasshopper (and also suggestion about Isovist2D 3D)

I wish to get plan as a section cut to get 2D floor plan then use it for isovist simulation. (as picture shown)
but i can’t get rid of windows to get something like what I drew in the picture) Or Should I use Isovist3D instead ?
Any suggestion for this and Isovist 3D?

Thanks :slight_smile:

If your building shape has holes where there are windows, you should be able to just use IsoVist 2d on the section of the wallshape. But you didn’t upload any data, so it’s hard to know what your starting point is.