Hello! I can’t get the shape of the building contour curves to stitch together correctly using Loft or Ruled Surface.
unless you want to loft all your curves together into a weird surface that goes through all the curves in your list, you need to supply couples of curves to be lofted together into separate lists:
also, you need to tell Polyline component that you want a closed polyline, so it will also draw a segment between point index 0 and point index -1