correcting plane positioning when ploting

tidy3d/plugins/mode/mode_solver.py

@@ -1472,18 +1472,18 @@ def _center_and_lims(self) -> Tuple[List, List, List, List]:
         _, (h_min_s, v_min_s) = Box.pop_axis(self.simulation.bounds[0], axis=n_axis)
         _, (h_max_s, v_max_s) = Box.pop_axis(self.simulation.bounds[1], axis=n_axis)
 
-        h_min = a_center[n_axis] - self.plane.size[t_axes[0]] / 2
-        h_max = a_center[n_axis] + self.plane.size[t_axes[0]] / 2
-        v_min = a_center[n_axis] - self.plane.size[t_axes[1]] / 2
-        v_max = a_center[n_axis] + self.plane.size[t_axes[1]] / 2
+        h_min = self.plane.center[t_axes[0]] - self.plane.size[t_axes[0]] / 2
+        h_max = self.plane.center[t_axes[0]] + self.plane.size[t_axes[0]] / 2
+        v_min = self.plane.center[t_axes[1]] - self.plane.size[t_axes[1]] / 2
+        v_max = self.plane.center[t_axes[1]] + self.plane.size[t_axes[1]] / 2
 
         h_lim = [
-            h_min if abs(h_min) < abs(h_min_s) else h_min_s,
-            h_max if abs(h_max) < abs(h_max_s) else h_max_s,
+            h_min if h_min > h_min_s else h_min_s,
+            h_max if h_max < h_max_s else h_max_s,
         ]
         v_lim = [
-            v_min if abs(v_min) < abs(v_min_s) else v_min_s,
-            v_max if abs(v_max) < abs(v_max_s) else v_max_s,
+            v_min if v_min > v_min_s else v_min_s,
+            v_max if v_max < v_max_s else v_max_s,
         ]
 
         return a_center, h_lim, v_lim, t_axes