src/lol/algorithm/aabb_tree.h
src/lol/algorithm/portal.h
src/lol/base/assert.h (could be useful)
src/lol/base/avl_tree.h
src/lol/image/pixel.h (but is it useful?)
src/lol/math/arraynd.h (but do we really want to keep it?)
src/lol/math/geometry.h
src/lol/math/interp.h (but what is it?)
src/numeric.h