float generic_position_formula(int size, int q_f, int q_l, float upper_edge_first_pix, float lower_edge_last_pix, float lorentz_shift, float theThickness, float cot_angle, float pitch, float pitchfraction_first, float pitchfraction_last, float eff_charge_cut_low, float eff_charge_cut_high, float size_cut)