tests/cornell_box.obj: res 100x100 
, nodes 30, spatial median @ axis(2) 279.600
left 0, nodes 12, spatial median @ axis(0) 252.500
 left 1, nodes 8, spatial median @ axis(2) 168.500
  left 2, nodes 4, spatial median @ axis(0) 186.000
   left 3, nodes 2, spatial median FAIL @ axis(1) 82.500
    left 4, leaf
    right 4, leaf
   right 3, nodes 2, spatial median FAIL @ axis(1) 82.500
    left 4, leaf
    right 4, leaf
  right 2, nodes 4, spatial median FAIL @ axis(2) 168.500
   left 3, nodes 2, spatial median FAIL @ axis(2) 168.500
    left 4, leaf
    right 4, leaf
   right 3, nodes 2, spatial median FAIL @ axis(1) 82.500
    left 4, leaf
    right 4, leaf
 right 1, nodes 4, spatial median @ axis(1) 165.000
  left 2, nodes 2, spatial median FAIL @ axis(1) 82.500
   left 3, leaf
   right 3, leaf
  right 2, nodes 2, spatial median FAIL @ axis(1) 165.000
   left 3, leaf
   right 3, leaf
right 0, nodes 18, spatial median FAIL @ axis(2) 279.600
 left 1, nodes 9, spatial median FAIL @ axis(2) 279.600
  left 2, nodes 4, spatial median FAIL @ axis(2) 279.600
   left 3, nodes 2, spatial median FAIL @ axis(2) 279.600
    left 4, leaf
    right 4, leaf
   right 3, nodes 2, spatial median FAIL @ axis(2) 279.600
    left 4, leaf
    right 4, leaf
  right 2, nodes 5, spatial median FAIL @ axis(2) 279.600
   left 3, nodes 2, spatial median @ axis(0) 278.000
    left 4, leaf
    right 4, leaf
   right 3, nodes 3, spatial median FAIL @ axis(2) 279.600
    left 4, leaf
    right 4, nodes 2, spatial median FAIL @ axis(2) 279.600
     left 5, leaf
     right 5, leaf
 right 1, nodes 9, spatial median FAIL @ axis(2) 279.600
  left 2, nodes 4, spatial median FAIL @ axis(2) 279.600
   left 3, nodes 2, spatial median FAIL @ axis(2) 279.600
    left 4, leaf
    right 4, leaf
   right 3, nodes 2, spatial median FAIL @ axis(1) 165.000
    left 4, leaf
    right 4, leaf
  right 2, nodes 5, spatial median FAIL @ axis(1) 165.000
   left 3, nodes 2, spatial median FAIL @ axis(1) 165.000
    left 4, leaf
    right 4, leaf
   right 3, nodes 3, spatial median FAIL @ axis(1) 165.000
    left 4, leaf
    right 4, nodes 2, spatial median FAIL @ axis(1) 165.000
     left 5, leaf
     right 5, leaf
done