Update

Author: beomki-yeo

core/include/detray/navigation/direct_navigator.hpp

@@ -320,12 +320,14 @@ class direct_navigator {
                 update_intersection(track, navigation, cfg, ctx);
             }
 
+            // Return true to reset the step size
             return true;
         } else {
             // Otherwise the track is moving towards a surface
             navigation.m_status = navigation::status::e_towards_object;
 
-            return true;
+            // Return false to scale the step size with RK4
+            return false;
         }
     }
 
@@ -344,10 +346,8 @@ class direct_navigator {
                     static_cast<scalar_type>(navigation.direction()) *
                         track.dir()),
                 navigation.target(), det.transform_store(), ctx,
-                sf.is_portal() ? darray<scalar_type, 2>{cfg.min_mask_tolerance,
-                                                        cfg.max_mask_tolerance}
-                               : darray<scalar_type, 2>{cfg.min_mask_tolerance,
-                                                        cfg.max_mask_tolerance},
+                darray<scalar_type, 2>{cfg.min_mask_tolerance,
+                                       cfg.max_mask_tolerance},
                 static_cast<scalar_type>(cfg.mask_tolerance_scalor),
                 static_cast<scalar_type>(cfg.overstep_tolerance));