Small refactor.
Right now, to create a PotentialSource object, we have to do
ps = koffi.PotentialSource()
ps.build_from_images_and_xy_positions(pixel_positions, mjds)
it would be much nicer if we could do it like this
# call build directy
ps1 = koffi.PotentialSource()
ps1.build(pixel_positions, mjds, format = "xy")
# build from constructor
ps2 = koffi.PotentialSource(pixel_positions, mjds, format="xy")
Small refactor.
Right now, to create a PotentialSource object, we have to do
it would be much nicer if we could do it like this