Hi,
I guess the title is pretty self explanatory, here's some screenshots.
Went from this surface model, that has been clipped by shapefile of buildings with average Z value of pixels within each of polygons
to this... (tilted view)
and need to extrude the point cloud to preferably ground or at least a fixed value that will go through the ground (might clip them later, not really necessary). Basically trying to to "extend sides to ground" function from Google Earth Pro but with point cloud (I do have the terrain DEM as well, doing this approach because I don't want vegetation in my final result and the terrain DEM has better resolution)
I'm pretty new to FME, so simpler, more begginner-ish solutions would probably be better.