small bug

Author: dbochkov-flexcompute

tidy3d/components/grid/grid_spec.py

@@ -1684,7 +1684,7 @@ def _resolve_gaps(self, structures: List, grid: Grid):
                     min_dx = np.min(h_cells_dx[h_cells_ij[:, 0] == ind_i])
                     max_dx = np.max(h_cells_dx[h_cells_ij[:, 0] == ind_i])
                     snapping_lines_x.append(x[ind_i] + 0.5 * (min_dx + max_dx))
-                    detected_gap_width = min(detected_gap_width, max_dy - min_dy)
+                    detected_gap_width = min(detected_gap_width, max_dx - min_dx)
 
         return [Box.unpop_axis(X, (None, None), axis=tan_dims[0]) for X in snapping_lines_x] + [
             Box.unpop_axis(Y, (None, None), axis=tan_dims[1]) for Y in snapping_lines_y