Interesting comment from D. Kumar. They are going to get rid from the real space detector definition (pixel size, detector distance etc). And switch completely to Q-space. Their They arguments: to define GISAXS detector in unambiguous way is pretty difficult. HipGISAXS is not data reduction software, we don't want to deal with variety variaety of (beam position in some weird coordinates etc). At the end users want anyway to have a simulation in q-space.
It seems unnatural to implement the detector in this way. Getting intensity in q-space is rather part of data reduction. Q-space.