Trying manual splitting

[Moelf]

this at least put us back where we are on master.... so people can try different ideas

to run:

julia --project=.

julia> using Revise, Geom4hep
julia> include("./examples/XRay.jl")
julia> mainbench()

[Moelf]

why is bad case so bad, 10x allocation

edit: the commit below fixed it, but why

[Moelf]

julia> mainbench()
  0.018861 seconds (110.53 k allocations: 2.997 MiB)
  2.460947 seconds (29.97 M allocations: 762.280 MiB, 2.49% gc time)
(-830.1:16.76969696969697:830.1, -661.1:13.355555555555556:661.1, [0.0 0.0 … 0.0 0.0; 0.0 0.39888076782051646 … 0.39888076782051646 0.0; … ; 0.0 0.39888076782051646 … 0.39888076782051646 0.0; 0.0 0.0 … 0.0 0.0])