diff --git a/apps/opencs/view/render/mousestate.cpp b/apps/opencs/view/render/mousestate.cpp
index 65596b752d..e62a4b1ff8 100644
--- a/apps/opencs/view/render/mousestate.cpp
+++ b/apps/opencs/view/render/mousestate.cpp
@@ -237,7 +237,8 @@ namespace CSVRender
                         // table feature & its data structure to be completed)
                         // Also need to signal PathgridPoint object of change
                         std::pair<std::string, float> result =
-                            mPhysics->distToClosest(pos, getCamera(), 600); // snap
+                            mPhysics->distToClosest(pos,
+                                    getCamera()->getViewport()->getVisibilityMask(), 600); // snap
 
                         if(result.first != "" && // don't allow pathgrid points under the cursor
                             !QString(result.first.c_str()).contains(QRegExp("^Pathgrid")))
@@ -474,7 +475,20 @@ namespace CSVRender
         float x = (float) mouseX / getViewport()->getActualWidth();
         float y = (float) mouseY / getViewport()->getActualHeight();
 
-        return mPhysics->castRay(x, y, mSceneManager, getCamera(), elements);
+        std::pair<std::string, Ogre::Vector3> result = mPhysics->castRay(x, y, mSceneManager, getCamera());
+
+        if(result.first != "" &&
+            ((elements & (Ogre::uint32)CSVRender::Element_Terrain &&
+            QString(result.first.c_str()).contains(QRegExp("^Height"))) ||
+            (elements & (Ogre::uint32)CSVRender::Element_Reference &&
+            QString(result.first.c_str()).contains(QRegExp("^ref#"))) ||
+            (elements & (Ogre::uint32)CSVRender::Element_Pathgrid &&
+            QString(result.first.c_str()).contains(QRegExp("^Pathgrid")))))
+        {
+            return result;
+        }
+        else
+            return std::make_pair("", Ogre::Vector3());
     }
 
     void MouseState::updateSceneWidgets()
diff --git a/apps/opencs/view/render/mousestate.hpp b/apps/opencs/view/render/mousestate.hpp
index d55d5f6c30..cde53f2c58 100644
--- a/apps/opencs/view/render/mousestate.hpp
+++ b/apps/opencs/view/render/mousestate.hpp
@@ -73,7 +73,7 @@ namespace CSVRender
             bool wheelEvent (QWheelEvent *event);
 
             std::pair<std::string, Ogre::Vector3> underCursor(const int mouseX,
-                    const int mouseY, Ogre::uint32 elements);
+                    const int mouseY, Ogre::uint32 elements = 0xFFFFFFFF);
 
             void cancelDrag();
 
diff --git a/apps/opencs/view/world/physicssystem.cpp b/apps/opencs/view/world/physicssystem.cpp
index 9012a06c2c..6450b5cf6c 100644
--- a/apps/opencs/view/world/physicssystem.cpp
+++ b/apps/opencs/view/world/physicssystem.cpp
@@ -214,8 +214,7 @@ namespace CSVWorld
     // WARNING: far clip distance is a global setting, if it changes in future
     //          this method will need to be updated
     std::pair<std::string, Ogre::Vector3> PhysicsSystem::castRay(float mouseX,
-            float mouseY, Ogre::SceneManager *sceneMgr, Ogre::Camera *camera,
-            Ogre::uint32 elements)
+            float mouseY, Ogre::SceneManager *sceneMgr, Ogre::Camera *camera)
     {
         // NOTE: there could be more than one camera for the scene manager
         // TODO: check whether camera belongs to sceneMgr
@@ -261,28 +260,19 @@ namespace CSVWorld
         }
 
         // result.first is the object's referenceId
-        if(result.first != "" &&
-            ((elements & (Ogre::uint32)CSVRender::Element_Terrain &&
-            QString(result.first.c_str()).contains(QRegExp("^Height"))) ||
-            (elements & (Ogre::uint32)CSVRender::Element_Reference &&
-            QString(result.first.c_str()).contains(QRegExp("^ref#"))) ||
-            (elements & (Ogre::uint32)CSVRender::Element_Pathgrid &&
-            QString(result.first.c_str()).contains(QRegExp("^Pathgrid")))))
-        {
-            return std::make_pair(result.first, ray.getPoint(farClipDist*result.second));
-        }
-        else
+        if(result.first == "")
             return std::make_pair("", Ogre::Vector3());
+        else
+            return std::make_pair(result.first, ray.getPoint(farClipDist*result.second));
     }
 
     std::pair<std::string, float> PhysicsSystem::distToGround(const Ogre::Vector3 &position,
-            Ogre::Camera *camera, const float limit, bool ignorePgPoint)
+            Ogre::uint32 visibilityMask, const float limit, bool ignorePgPoint)
     {
         btVector3 _from, _to;
         _from = btVector3(position.x, position.y, position.z);
         _to = btVector3(position.x, position.y, position.z-limit);
 
-        Ogre::uint32 visibilityMask = camera->getViewport()->getVisibilityMask();
         bool ignoreHeightMap = !(visibilityMask & (Ogre::uint32)CSVRender::Element_Terrain);
         bool ignoreObjects = !(visibilityMask & (Ogre::uint32)CSVRender::Element_Reference);
         bool ignorePathgrid = ignorePgPoint ||
@@ -315,13 +305,13 @@ namespace CSVWorld
 
     // tries to find the distance to the "top" of the closest object
     std::pair<std::string, float> PhysicsSystem::distToClosest(const Ogre::Vector3 &position,
-            Ogre::Camera *camera, const float limit)
+            Ogre::uint32 visibilityMask, const float limit)
     {
         const float thickness = 50; // arbitrary number
 
         std::pair<std::string, float> resDown =
             distToGround(Ogre::Vector3(position.x, position.y, position.z+thickness),
-                         camera, limit+thickness, true);
+                         visibilityMask, limit+thickness, true);
 
         if(resDown.first != "")
             return std::make_pair(resDown.first, resDown.second-thickness);
diff --git a/apps/opencs/view/world/physicssystem.hpp b/apps/opencs/view/world/physicssystem.hpp
index 5543c84b96..f71ab685c7 100644
--- a/apps/opencs/view/world/physicssystem.hpp
+++ b/apps/opencs/view/world/physicssystem.hpp
@@ -73,14 +73,13 @@ namespace CSVWorld
 
             // return the object's SceneNode name and position for the given SceneManager
             std::pair<std::string, Ogre::Vector3> castRay(float mouseX,
-                    float mouseY, Ogre::SceneManager *sceneMgr, Ogre::Camera *camera,
-                    Ogre::uint32 elements = 0xFFFFFFFF);
+                    float mouseY, Ogre::SceneManager *sceneMgr, Ogre::Camera *camera);
 
             std::pair<std::string, float> distToGround(const Ogre::Vector3 &position,
-                    Ogre::Camera *camera, const float limit = 300000, bool ignorePgPoint = false);
+                    Ogre::uint32 visibilityMask, const float limit = 300000, bool ignorePgPoint = false);
 
             std::pair<std::string, float> distToClosest(const Ogre::Vector3 &position,
-                    Ogre::Camera *camera, const float limit = 100.0f);
+                    Ogre::uint32 visibilityMask, const float limit = 100.0f);
 
             std::string refIdToSceneNode(std::string referenceId, Ogre::SceneManager *sceneMgr);