Fix x-ray propagation sign to always be positive

Signed-off-by: Patrick Avery <[email protected]>
HEXRD · Dec 18, 2024 · 5d1ef9c · 5d1ef9c
1 parent 164b618
commit 5d1ef9c
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/hexrdgui/calibration/cartesian_plot.py b/hexrdgui/calibration/cartesian_plot.py
@@ -22,6 +22,8 @@
 def cartesian_viewer():
     return InstrumentViewer()
 
+def get_xray_propagation_sign(instr):
+    return np.sign(instr.beam_vector[2])
 
 class InstrumentViewer:
 
@@ -40,7 +42,8 @@ def __init__(self):
         self.detector_corners = {}
 
         dist = HexrdConfig().cartesian_virtual_plane_distance
-        dplane_tvec = np.array([0., 0., -dist])
+        sgn = get_xray_propagation_sign(self.instr)
+        dplane_tvec = np.array([0., 0., sgn*dist])
 
         rotate_x = HexrdConfig().cartesian_plane_normal_rotate_x
         rotate_y = HexrdConfig().cartesian_plane_normal_rotate_y