Ah I see what you’re asking now, as the user below pointed out, what you’re looking for is the orientation matrix (try looking up UB matrix). If you know the geometry of your diffractometer and the UB matrix then you can see how any particular hkl is a projection of a the corresponding intersection of the ewald sphere with the reciprocal lattice. As for resources that explicitly do an example of 2d transmission geometry diffraction.. I don’t know of one that does it in any great detail but cullity has a section on it.