diff options
Diffstat (limited to 'src/diffraction.c')
| -rw-r--r-- | src/diffraction.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/diffraction.c b/src/diffraction.c index 1960f786..8b245589 100644 --- a/src/diffraction.c +++ b/src/diffraction.c @@ -267,6 +267,28 @@ struct rvec get_q(struct image *image, unsigned int xs, unsigned int ys, } +double get_tt(struct image *image, unsigned int xs, unsigned int ys) +{ + float r; + float rx = 0.0; + float ry = 0.0; + struct panel *p; + + const unsigned int x = xs; + const unsigned int y = ys; /* Integer part only */ + + p = find_panel(&image->det, x, y); + + rx = ((float)xs - p->cx) / p->res; + ry = ((float)ys - p->cy) / p->res; + + /* Calculate q-vector for this sub-pixel */ + r = sqrt(pow(rx, 2.0) + pow(ry, 2.0)); + + return atan2(r, p->clen); +} + + void get_diffraction(struct image *image, int na, int nb, int nc, const double *intensities, const unsigned int *counts, UnitCell *cell, int do_water, GradientMethod m) |