diff --git a/Core/Code/Rendering/mitkBaseRenderer.cpp b/Core/Code/Rendering/mitkBaseRenderer.cpp
index 30ceb8082c..1d54d11e5e 100644
--- a/Core/Code/Rendering/mitkBaseRenderer.cpp
+++ b/Core/Code/Rendering/mitkBaseRenderer.cpp
@@ -1,889 +1,889 @@
 /*===================================================================
 
  The Medical Imaging Interaction Toolkit (MITK)
 
  Copyright (c) German Cancer Research Center,
  Division of Medical and Biological Informatics.
  All rights reserved.
 
  This software is distributed WITHOUT ANY WARRANTY; without
  even the implied warranty of MERCHANTABILITY or FITNESS FOR
  A PARTICULAR PURPOSE.
 
  See LICENSE.txt or http://www.mitk.org for details.
 
  ===================================================================*/
 
 #include "mitkBaseRenderer.h"
 #include "mitkMapper.h"
 #include "mitkResliceMethodProperty.h"
 #include "mitkKeyEvent.h"
 
 // Geometries
 #include "mitkPlaneGeometry.h"
 #include "mitkSlicedGeometry3D.h"
 
 // Controllers
 #include "mitkCameraController.h"
 #include "mitkSliceNavigationController.h"
 #include "mitkCameraRotationController.h"
 #include "mitkVtkInteractorCameraController.h"
 
 #ifdef MITK_USE_TD_MOUSE
 #include "mitkTDMouseVtkCameraController.h"
 #else
 #include "mitkCameraController.h"
 #endif
 
 #include "mitkVtkLayerController.h"
 
 // Events // TODO: INTERACTION_LEGACY
 #include "mitkEventMapper.h"
 #include "mitkGlobalInteraction.h"
 #include "mitkPositionEvent.h"
 #include "mitkDisplayPositionEvent.h"
 #include "mitkProperties.h"
 #include "mitkWeakPointerProperty.h"
 #include "mitkInteractionConst.h"
 #include "mitkOverlayManager.h"
 
 // VTK
 #include <vtkLinearTransform.h>
 #include <vtkRenderer.h>
 #include <vtkRenderWindow.h>
 #include <vtkCamera.h>
 
 #include <vtkProperty.h>
 #include <vtkPolyDataMapper.h>
 #include <vtkActor.h>
 
 mitk::BaseRenderer::BaseRendererMapType mitk::BaseRenderer::baseRendererMap;
 
 mitk::BaseRenderer* mitk::BaseRenderer::GetInstance(vtkRenderWindow * renWin)
 {
   for (BaseRendererMapType::iterator mapit = baseRendererMap.begin(); mapit != baseRendererMap.end(); mapit++)
   {
     if ((*mapit).first == renWin)
       return (*mapit).second;
   }
   return NULL;
 }
 
 void mitk::BaseRenderer::AddInstance(vtkRenderWindow* renWin, BaseRenderer* baseRenderer)
 {
   if (renWin == NULL || baseRenderer == NULL)
     return;
 
   // ensure that no BaseRenderer is managed twice
   mitk::BaseRenderer::RemoveInstance(renWin);
 
   baseRendererMap.insert(BaseRendererMapType::value_type(renWin, baseRenderer));
 }
 
 void mitk::BaseRenderer::RemoveInstance(vtkRenderWindow* renWin)
 {
   BaseRendererMapType::iterator mapit = baseRendererMap.find(renWin);
   if (mapit != baseRendererMap.end())
     baseRendererMap.erase(mapit);
 }
 
 mitk::BaseRenderer* mitk::BaseRenderer::GetByName(const std::string& name)
 {
   for (BaseRendererMapType::iterator mapit = baseRendererMap.begin(); mapit != baseRendererMap.end(); mapit++)
   {
     if ((*mapit).second->m_Name == name)
       return (*mapit).second;
   }
   return NULL;
 }
 
 vtkRenderWindow* mitk::BaseRenderer::GetRenderWindowByName(const std::string& name)
 {
   for (BaseRendererMapType::iterator mapit = baseRendererMap.begin(); mapit != baseRendererMap.end(); mapit++)
   {
     if ((*mapit).second->m_Name == name)
       return (*mapit).first;
   }
   return NULL;
 }
 
 mitk::BaseRenderer::BaseRenderer(const char* name, vtkRenderWindow * renWin, mitk::RenderingManager* rm) :
     m_RenderWindow(NULL), m_VtkRenderer(NULL), m_MapperID(defaultMapper), m_DataStorage(NULL), m_RenderingManager(rm), m_LastUpdateTime(0), m_CameraController(
         NULL), m_SliceNavigationController(NULL), m_CameraRotationController(NULL), /*m_Size(),*/
     m_Focused(false), m_WorldGeometry(NULL), m_WorldTimeGeometry(NULL), m_CurrentWorldGeometry(NULL), m_CurrentWorldGeometry2D(NULL), m_DisplayGeometry(
-        NULL), m_Slice(0), m_TimeStep(), m_CurrentWorldGeometry2DUpdateTime(), m_DisplayGeometryUpdateTime(), m_TimeStepUpdateTime(), m_WorldGeometryData(
+        NULL), m_Slice(0), m_TimeStep(), m_CurrentWorldGeometry2DUpdateTime(), m_DisplayGeometryUpdateTime(), m_TimeStepUpdateTime(), m_KeepDisplayedRegion(true), m_WorldGeometryData(
         NULL), m_DisplayGeometryData(NULL), m_CurrentWorldGeometry2DData(NULL), m_WorldGeometryNode(NULL), m_DisplayGeometryNode(NULL), m_CurrentWorldGeometry2DNode(
         NULL), m_DisplayGeometryTransformTime(0), m_CurrentWorldGeometry2DTransformTime(0), m_Name(name), /*m_Bounds(),*/m_EmptyWorldGeometry(
         true), m_DepthPeelingEnabled(true), m_MaxNumberOfPeels(100), m_NumberOfVisibleLODEnabledMappers(0)
 {
   m_Bounds[0] = 0;
   m_Bounds[1] = 0;
   m_Bounds[2] = 0;
   m_Bounds[3] = 0;
   m_Bounds[4] = 0;
   m_Bounds[5] = 0;
 
   if (name != NULL)
   {
     m_Name = name;
   }
   else
   {
     m_Name = "unnamed renderer";
     itkWarningMacro(<< "Created unnamed renderer. Bad for serialization. Please choose a name.");
   }
 
   if (renWin != NULL)
   {
     m_RenderWindow = renWin;
     m_RenderWindow->Register(NULL);
   }
   else
   {
     itkWarningMacro(<< "Created mitkBaseRenderer without vtkRenderWindow present.");
   }
 
   m_Size[0] = 0;
   m_Size[1] = 0;
 
   //instances.insert( this );
 
   //adding this BaseRenderer to the List of all BaseRenderer
   // TODO: INTERACTION_LEGACY
   m_RenderingManager->GetGlobalInteraction()->AddFocusElement(this);
 
   m_BindDispatcherInteractor = new mitk::BindDispatcherInteractor( GetName() );
 
   WeakPointerProperty::Pointer rendererProp = WeakPointerProperty::New((itk::Object*) this);
 
   m_CurrentWorldGeometry2D = mitk::PlaneGeometry::New();
 
   m_CurrentWorldGeometry2DData = mitk::Geometry2DData::New();
   m_CurrentWorldGeometry2DData->SetGeometry2D(m_CurrentWorldGeometry2D);
   m_CurrentWorldGeometry2DNode = mitk::DataNode::New();
   m_CurrentWorldGeometry2DNode->SetData(m_CurrentWorldGeometry2DData);
   m_CurrentWorldGeometry2DNode->GetPropertyList()->SetProperty("renderer", rendererProp);
   m_CurrentWorldGeometry2DNode->GetPropertyList()->SetProperty("layer", IntProperty::New(1000));
 
   m_CurrentWorldGeometry2DNode->SetProperty("reslice.thickslices", mitk::ResliceMethodProperty::New());
   m_CurrentWorldGeometry2DNode->SetProperty("reslice.thickslices.num", mitk::IntProperty::New(1));
 
   m_CurrentWorldGeometry2DTransformTime = m_CurrentWorldGeometry2DNode->GetVtkTransform()->GetMTime();
 
   m_DisplayGeometry = mitk::DisplayGeometry::New();
   m_DisplayGeometry->SetWorldGeometry(m_CurrentWorldGeometry2D);
   m_DisplayGeometryData = mitk::Geometry2DData::New();
   m_DisplayGeometryData->SetGeometry2D(m_DisplayGeometry);
   m_DisplayGeometryNode = mitk::DataNode::New();
   m_DisplayGeometryNode->SetData(m_DisplayGeometryData);
   m_DisplayGeometryNode->GetPropertyList()->SetProperty("renderer", rendererProp);
   m_DisplayGeometryTransformTime = m_DisplayGeometryNode->GetVtkTransform()->GetMTime();
 
   mitk::SliceNavigationController::Pointer sliceNavigationController = mitk::SliceNavigationController::New("navigation");
   sliceNavigationController->SetRenderer(this);
   sliceNavigationController->ConnectGeometrySliceEvent(this);
   sliceNavigationController->ConnectGeometryUpdateEvent(this);
   sliceNavigationController->ConnectGeometryTimeEvent(this, false);
   m_SliceNavigationController = sliceNavigationController;
 
   m_CameraRotationController = mitk::CameraRotationController::New();
   m_CameraRotationController->SetRenderWindow(m_RenderWindow);
   m_CameraRotationController->AcquireCamera();
 
 //if TD Mouse Interaction is activated, then call TDMouseVtkCameraController instead of VtkInteractorCameraController
 #ifdef MITK_USE_TD_MOUSE
   m_CameraController = mitk::TDMouseVtkCameraController::New();
 #else
   m_CameraController = mitk::CameraController::New(NULL);
 #endif
 
   m_VtkRenderer = vtkRenderer::New();
 
   if (mitk::VtkLayerController::GetInstance(m_RenderWindow) == NULL)
   {
     mitk::VtkLayerController::AddInstance(m_RenderWindow, m_VtkRenderer);
     mitk::VtkLayerController::GetInstance(m_RenderWindow)->InsertSceneRenderer(m_VtkRenderer);
   }
   else
     mitk::VtkLayerController::GetInstance(m_RenderWindow)->InsertSceneRenderer(m_VtkRenderer);
 }
 
 mitk::BaseRenderer::~BaseRenderer()
 {
   if (m_OverlayManager.IsNotNull())
   {
     m_OverlayManager->RemoveBaseRenderer(this);
   }
 
   if (m_VtkRenderer != NULL)
   {
     m_VtkRenderer->Delete();
     m_VtkRenderer = NULL;
   }
 
   if (m_CameraController.IsNotNull())
     m_CameraController->SetRenderer(NULL);
 
   m_RenderingManager->GetGlobalInteraction()->RemoveFocusElement(this);
 
   mitk::VtkLayerController::RemoveInstance(m_RenderWindow);
 
   RemoveAllLocalStorages();
 
   m_DataStorage = NULL;
 
   if (m_BindDispatcherInteractor != NULL)
   {
     delete m_BindDispatcherInteractor;
   }
 
   if (m_RenderWindow != NULL)
   {
     m_RenderWindow->Delete();
     m_RenderWindow = NULL;
   }
 
 }
 
 void mitk::BaseRenderer::RemoveAllLocalStorages()
 {
   this->InvokeEvent(mitk::BaseRenderer::RendererResetEvent());
 
   std::list<mitk::BaseLocalStorageHandler*>::iterator it;
   for (it = m_RegisteredLocalStorageHandlers.begin(); it != m_RegisteredLocalStorageHandlers.end(); it++)
     (*it)->ClearLocalStorage(this, false);
   m_RegisteredLocalStorageHandlers.clear();
 }
 
 void mitk::BaseRenderer::RegisterLocalStorageHandler(mitk::BaseLocalStorageHandler *lsh)
 {
   m_RegisteredLocalStorageHandlers.push_back(lsh);
 }
 
 mitk::Dispatcher::Pointer mitk::BaseRenderer::GetDispatcher() const
 {
   return m_BindDispatcherInteractor->GetDispatcher();
 }
 
 mitk::Point3D mitk::BaseRenderer::Map2DRendererPositionTo3DWorldPosition(Point2D* mousePosition) const
 {
   Point2D p_mm;
   Point3D position;
   if (m_MapperID == 1)
   {
     GetDisplayGeometry()->ULDisplayToDisplay(*mousePosition, *mousePosition);
     GetDisplayGeometry()->DisplayToWorld(*mousePosition, p_mm);
     GetDisplayGeometry()->Map(p_mm, position);
   }
   else if (m_MapperID == 2)
   {
     GetDisplayGeometry()->ULDisplayToDisplay(*mousePosition, *mousePosition);
     PickWorldPoint(*mousePosition, position);
   }
   return position;
 }
 
 void mitk::BaseRenderer::UnregisterLocalStorageHandler(mitk::BaseLocalStorageHandler *lsh)
 {
   m_RegisteredLocalStorageHandlers.remove(lsh);
 }
 
 void mitk::BaseRenderer::SetDataStorage(DataStorage* storage)
 {
   if (storage != NULL)
   {
     m_DataStorage = storage;
     m_BindDispatcherInteractor->SetDataStorage(m_DataStorage);
     this->Modified();
   }
 }
 
 const mitk::BaseRenderer::MapperSlotId mitk::BaseRenderer::defaultMapper = 1;
 
 void mitk::BaseRenderer::Paint()
 {
 }
 
 void mitk::BaseRenderer::Initialize()
 {
 }
 
 void mitk::BaseRenderer::Resize(int w, int h)
 {
   m_Size[0] = w;
   m_Size[1] = h;
 
   if (m_CameraController)
     m_CameraController->Resize(w, h); //(formerly problematic on windows: vtkSizeBug)
 
-  GetDisplayGeometry()->SetSizeInDisplayUnits(w, h);
+  GetDisplayGeometry()->SetSizeInDisplayUnits(w, h, m_KeepDisplayedRegion);
 }
 
 void mitk::BaseRenderer::InitRenderer(vtkRenderWindow* renderwindow)
 {
   if (m_RenderWindow != NULL)
   {
     m_RenderWindow->Delete();
   }
   m_RenderWindow = renderwindow;
   if (m_RenderWindow != NULL)
   {
     m_RenderWindow->Register(NULL);
   }
 
   RemoveAllLocalStorages();
 
   if (m_CameraController.IsNotNull())
   {
     m_CameraController->SetRenderer(this);
   }
 
   //BUG (#1551) added settings for depth peeling
   m_RenderWindow->SetAlphaBitPlanes(1);
   m_VtkRenderer->SetUseDepthPeeling(m_DepthPeelingEnabled);
   m_VtkRenderer->SetMaximumNumberOfPeels(m_MaxNumberOfPeels);
   m_VtkRenderer->SetOcclusionRatio(0.1);
 }
 
 void mitk::BaseRenderer::InitSize(int w, int h)
 {
   m_Size[0] = w;
   m_Size[1] = h;
   GetDisplayGeometry()->SetSizeInDisplayUnits(w, h, false);
   GetDisplayGeometry()->Fit();
 }
 
 void mitk::BaseRenderer::SetSlice(unsigned int slice)
 {
   if (m_Slice != slice)
   {
     m_Slice = slice;
     if (m_WorldTimeGeometry.IsNotNull())
     {
       SlicedGeometry3D* slicedWorldGeometry = dynamic_cast<SlicedGeometry3D*>(m_WorldTimeGeometry->GetGeometryForTimeStep(m_TimeStep).GetPointer());
       if (slicedWorldGeometry != NULL)
       {
         if (m_Slice >= slicedWorldGeometry->GetSlices())
           m_Slice = slicedWorldGeometry->GetSlices() - 1;
         SetCurrentWorldGeometry2D(slicedWorldGeometry->GetGeometry2D(m_Slice));
         SetCurrentWorldGeometry(slicedWorldGeometry);
       }
     }
     else
       Modified();
   }
 }
 
 void mitk::BaseRenderer::SetOverlayManager(itk::SmartPointer<OverlayManager> overlayManager)
 {
   if(overlayManager.IsNull())
     return;
 
   if(this->m_OverlayManager.IsNotNull())
   {
     if(this->m_OverlayManager.GetPointer() == overlayManager.GetPointer())
     {
       return;
     }
     else
     {
       this->m_OverlayManager->RemoveBaseRenderer(this);
     }
   }
   this->m_OverlayManager = overlayManager;
   this->m_OverlayManager->AddBaseRenderer(this); //TODO
 }
 
 itk::SmartPointer<mitk::OverlayManager> mitk::BaseRenderer::GetOverlayManager()
 {
   if(this->m_OverlayManager.IsNull())
   {
     m_OverlayManager = mitk::OverlayManager::New();
     m_OverlayManager->AddBaseRenderer(this);
   }
   return this->m_OverlayManager;
 }
 
 void mitk::BaseRenderer::SetTimeStep(unsigned int timeStep)
 {
   if (m_TimeStep != timeStep)
   {
     m_TimeStep = timeStep;
     m_TimeStepUpdateTime.Modified();
 
     if (m_WorldTimeGeometry.IsNotNull())
     {
       if (m_TimeStep >= m_WorldTimeGeometry->CountTimeSteps())
         m_TimeStep = m_WorldTimeGeometry->CountTimeSteps() - 1;
       SlicedGeometry3D* slicedWorldGeometry = dynamic_cast<SlicedGeometry3D*>(m_WorldTimeGeometry->GetGeometryForTimeStep(m_TimeStep).GetPointer());
       if (slicedWorldGeometry != NULL)
       {
         SetCurrentWorldGeometry2D(slicedWorldGeometry->GetGeometry2D(m_Slice));
         SetCurrentWorldGeometry(slicedWorldGeometry);
       }
     }
     else
       Modified();
   }
 }
 
 int mitk::BaseRenderer::GetTimeStep(const mitk::BaseData* data) const
 {
   if ((data == NULL) || (data->IsInitialized() == false))
   {
     return -1;
   }
   return data->GetTimeGeometry()->TimePointToTimeStep(GetTime());
 }
 
 mitk::ScalarType mitk::BaseRenderer::GetTime() const
 {
   if (m_WorldTimeGeometry.IsNull())
   {
     return 0;
   }
   else
   {
     ScalarType timeInMS = m_WorldTimeGeometry->TimeStepToTimePoint(GetTimeStep());
     if (timeInMS == ScalarTypeNumericTraits::NonpositiveMin())
       return 0;
     else
       return timeInMS;
   }
 }
 
 void mitk::BaseRenderer::SetWorldTimeGeometry(mitk::TimeGeometry* geometry)
 {
   assert(geometry != NULL);
 
   itkDebugMacro("setting WorldTimeGeometry to " << geometry);
   if (m_WorldTimeGeometry != geometry)
   {
     if (geometry->GetBoundingBoxInWorld()->GetDiagonalLength2() == 0)
       return;
 
     m_WorldTimeGeometry = geometry;
     itkDebugMacro("setting WorldTimeGeometry to " << m_WorldTimeGeometry);
 
     if (m_TimeStep >= m_WorldTimeGeometry->CountTimeSteps())
         m_TimeStep = m_WorldTimeGeometry->CountTimeSteps() - 1;
 
     Geometry3D* geometry3d;
     geometry3d = m_WorldTimeGeometry->GetGeometryForTimeStep(m_TimeStep);
     SetWorldGeometry3D(geometry3d);
   }
 }
 
 void mitk::BaseRenderer::SetWorldGeometry3D(mitk::Geometry3D* geometry)
 {
   itkDebugMacro("setting WorldGeometry3D to " << geometry);
 
   if (m_WorldGeometry != geometry)
   {
     if (geometry->GetBoundingBox()->GetDiagonalLength2() == 0)
       return;
 
     m_WorldGeometry = geometry;
     SlicedGeometry3D* slicedWorldGeometry;
     slicedWorldGeometry = dynamic_cast<SlicedGeometry3D*>(geometry);
 
     Geometry2D::Pointer geometry2d;
     if (slicedWorldGeometry != NULL)
     {
       if (m_Slice >= slicedWorldGeometry->GetSlices() && (m_Slice != 0))
         m_Slice = slicedWorldGeometry->GetSlices() - 1;
       geometry2d = slicedWorldGeometry->GetGeometry2D(m_Slice);
       if (geometry2d.IsNull())
       {
         PlaneGeometry::Pointer plane = mitk::PlaneGeometry::New();
         plane->InitializeStandardPlane(slicedWorldGeometry);
         geometry2d = plane;
       }
       SetCurrentWorldGeometry(slicedWorldGeometry);
     }
     else
     {
       geometry2d = dynamic_cast<Geometry2D*>(geometry);
       if (geometry2d.IsNull())
       {
         PlaneGeometry::Pointer plane = PlaneGeometry::New();
         plane->InitializeStandardPlane(geometry);
         geometry2d = plane;
       }
       SetCurrentWorldGeometry(geometry);
     }
     SetCurrentWorldGeometry2D(geometry2d); // calls Modified()
   }
   if (m_CurrentWorldGeometry2D.IsNull())
     itkWarningMacro("m_CurrentWorldGeometry2D is NULL");
 }
 
 void mitk::BaseRenderer::SetDisplayGeometry(mitk::DisplayGeometry* geometry2d)
 {
   itkDebugMacro("setting DisplayGeometry to " << geometry2d);
   if (m_DisplayGeometry != geometry2d)
   {
     m_DisplayGeometry = geometry2d;
     m_DisplayGeometryData->SetGeometry2D(m_DisplayGeometry);
     m_DisplayGeometryUpdateTime.Modified();
     Modified();
   }
 }
 
 void mitk::BaseRenderer::SetCurrentWorldGeometry2D(mitk::Geometry2D* geometry2d)
 {
   if (m_CurrentWorldGeometry2D != geometry2d)
   {
     m_CurrentWorldGeometry2D = geometry2d;
     m_CurrentWorldGeometry2DData->SetGeometry2D(m_CurrentWorldGeometry2D);
     m_DisplayGeometry->SetWorldGeometry(m_CurrentWorldGeometry2D);
     m_CurrentWorldGeometry2DUpdateTime.Modified();
     Modified();
   }
 }
 
 void mitk::BaseRenderer::SendUpdateSlice()
 {
   m_DisplayGeometryUpdateTime.Modified();
   m_CurrentWorldGeometry2DUpdateTime.Modified();
 }
 
 void mitk::BaseRenderer::SetCurrentWorldGeometry(mitk::Geometry3D* geometry)
 {
   m_CurrentWorldGeometry = geometry;
   if (geometry == NULL)
   {
     m_Bounds[0] = 0;
     m_Bounds[1] = 0;
     m_Bounds[2] = 0;
     m_Bounds[3] = 0;
     m_Bounds[4] = 0;
     m_Bounds[5] = 0;
     m_EmptyWorldGeometry = true;
     return;
   }
   BoundingBox::Pointer boundingBox = m_CurrentWorldGeometry->CalculateBoundingBoxRelativeToTransform(NULL);
   const BoundingBox::BoundsArrayType& worldBounds = boundingBox->GetBounds();
   m_Bounds[0] = worldBounds[0];
   m_Bounds[1] = worldBounds[1];
   m_Bounds[2] = worldBounds[2];
   m_Bounds[3] = worldBounds[3];
   m_Bounds[4] = worldBounds[4];
   m_Bounds[5] = worldBounds[5];
   if (boundingBox->GetDiagonalLength2() <= mitk::eps)
     m_EmptyWorldGeometry = true;
   else
     m_EmptyWorldGeometry = false;
 }
 
 void mitk::BaseRenderer::UpdateOverlays()
 {
   if(m_OverlayManager.IsNotNull())
   {
     m_OverlayManager->UpdateOverlays(this);
   }
 }
 
 void mitk::BaseRenderer::SetGeometry(const itk::EventObject & geometrySendEvent)
 {
   const SliceNavigationController::GeometrySendEvent* sendEvent =
       dynamic_cast<const SliceNavigationController::GeometrySendEvent *>(&geometrySendEvent);
 
   assert(sendEvent!=NULL);
   SetWorldTimeGeometry(sendEvent->GetTimeGeometry());
 }
 
 void mitk::BaseRenderer::UpdateGeometry(const itk::EventObject & geometryUpdateEvent)
 {
   const SliceNavigationController::GeometryUpdateEvent* updateEvent =
       dynamic_cast<const SliceNavigationController::GeometryUpdateEvent*>(&geometryUpdateEvent);
 
   if (updateEvent == NULL)
     return;
 
   if (m_CurrentWorldGeometry.IsNotNull())
   {
     SlicedGeometry3D* slicedWorldGeometry = dynamic_cast<SlicedGeometry3D*>(m_CurrentWorldGeometry.GetPointer());
     if (slicedWorldGeometry)
     {
       Geometry2D* geometry2D = slicedWorldGeometry->GetGeometry2D(m_Slice);
 
       SetCurrentWorldGeometry2D(geometry2D); // calls Modified()
     }
   }
 }
 
 void mitk::BaseRenderer::SetGeometrySlice(const itk::EventObject & geometrySliceEvent)
 {
   const SliceNavigationController::GeometrySliceEvent* sliceEvent =
       dynamic_cast<const SliceNavigationController::GeometrySliceEvent *>(&geometrySliceEvent);
 
   assert(sliceEvent!=NULL);
   SetSlice(sliceEvent->GetPos());
 }
 
 void mitk::BaseRenderer::SetGeometryTime(const itk::EventObject & geometryTimeEvent)
 {
   const SliceNavigationController::GeometryTimeEvent * timeEvent =
       dynamic_cast<const SliceNavigationController::GeometryTimeEvent *>(&geometryTimeEvent);
 
   assert(timeEvent!=NULL);
   SetTimeStep(timeEvent->GetPos());
 }
 
 const double* mitk::BaseRenderer::GetBounds() const
 {
   return m_Bounds;
 }
 
 void mitk::BaseRenderer::MousePressEvent(mitk::MouseEvent *me)
 {
   //set the Focus on the renderer
   /*bool success =*/m_RenderingManager->GetGlobalInteraction()->SetFocus(this);
   /*
    if (! success)
    mitk::StatusBar::GetInstance()->DisplayText("Warning! from mitkBaseRenderer.cpp: Couldn't focus this BaseRenderer!");
    */
 
   //if (m_CameraController)
   //{
   //  if(me->GetButtonState()!=512) // provisorisch: Ctrl nicht durchlassen. Bald wird aus m_CameraController eine StateMachine
   //    m_CameraController->MousePressEvent(me);
   //}
   if (m_MapperID == 1)
   {
     Point2D p(me->GetDisplayPosition());
     Point2D p_mm;
     Point3D position;
     GetDisplayGeometry()->ULDisplayToDisplay(p, p);
     GetDisplayGeometry()->DisplayToWorld(p, p_mm);
     GetDisplayGeometry()->Map(p_mm, position);
     mitk::PositionEvent event(this, me->GetType(), me->GetButton(), me->GetButtonState(), mitk::Key_unknown, p, position);
     mitk::EventMapper::MapEvent(&event, m_RenderingManager->GetGlobalInteraction());
   }
   else if (m_MapperID > 1)  //==2 for 3D and ==5 for stencil
   {
     Point2D p(me->GetDisplayPosition());
 
     GetDisplayGeometry()->ULDisplayToDisplay(p, p);
     me->SetDisplayPosition(p);
     mitk::EventMapper::MapEvent(me, m_RenderingManager->GetGlobalInteraction());
   }
 }
 
 void mitk::BaseRenderer::MouseReleaseEvent(mitk::MouseEvent *me)
 {
   //if (m_CameraController)
   //{
   //  if(me->GetButtonState()!=512) // provisorisch: Ctrl nicht durchlassen. Bald wird aus m_CameraController eine StateMachine
   //    m_CameraController->MouseReleaseEvent(me);
   //}
 
   if (m_MapperID == 1)
   {
     Point2D p(me->GetDisplayPosition());
     Point2D p_mm;
     Point3D position;
     GetDisplayGeometry()->ULDisplayToDisplay(p, p);
     GetDisplayGeometry()->DisplayToWorld(p, p_mm);
     GetDisplayGeometry()->Map(p_mm, position);
     mitk::PositionEvent event(this, me->GetType(), me->GetButton(), me->GetButtonState(), mitk::Key_unknown, p, position);
     mitk::EventMapper::MapEvent(&event, m_RenderingManager->GetGlobalInteraction());
   }
   else if (m_MapperID == 2)
   {
     Point2D p(me->GetDisplayPosition());
     GetDisplayGeometry()->ULDisplayToDisplay(p, p);
     me->SetDisplayPosition(p);
     mitk::EventMapper::MapEvent(me, m_RenderingManager->GetGlobalInteraction());
   }
 }
 
 void mitk::BaseRenderer::MouseMoveEvent(mitk::MouseEvent *me)
 {
   //if (m_CameraController)
   //{
   //  if((me->GetButtonState()<=512) || (me->GetButtonState()>=516))// provisorisch: Ctrl nicht durchlassen. Bald wird aus m_CameraController eine StateMachine
   //    m_CameraController->MouseMoveEvent(me);
   //}
   if (m_MapperID == 1)
   {
     Point2D p(me->GetDisplayPosition());
     Point2D p_mm;
     Point3D position;
     GetDisplayGeometry()->ULDisplayToDisplay(p, p);
     GetDisplayGeometry()->DisplayToWorld(p, p_mm);
     GetDisplayGeometry()->Map(p_mm, position);
     mitk::PositionEvent event(this, me->GetType(), me->GetButton(), me->GetButtonState(), mitk::Key_unknown, p, position);
     mitk::EventMapper::MapEvent(&event, m_RenderingManager->GetGlobalInteraction());
   }
   else if (m_MapperID == 2)
   {
     Point2D p(me->GetDisplayPosition());
     GetDisplayGeometry()->ULDisplayToDisplay(p, p);
     me->SetDisplayPosition(p);
     mitk::EventMapper::MapEvent(me, m_RenderingManager->GetGlobalInteraction());
   }
 }
 
 void mitk::BaseRenderer::PickWorldPoint(const mitk::Point2D& displayPoint, mitk::Point3D& worldPoint) const
 {
   mitk::Point2D worldPoint2D;
   GetDisplayGeometry()->DisplayToWorld(displayPoint, worldPoint2D);
   GetDisplayGeometry()->Map(worldPoint2D, worldPoint);
 }
 
 void mitk::BaseRenderer::WheelEvent(mitk::WheelEvent * we)
 {
   if (m_MapperID == 1)
   {
     Point2D p(we->GetDisplayPosition());
     Point2D p_mm;
     Point3D position;
     GetDisplayGeometry()->ULDisplayToDisplay(p, p);
     GetDisplayGeometry()->DisplayToWorld(p, p_mm);
     GetDisplayGeometry()->Map(p_mm, position);
     mitk::PositionEvent event(this, we->GetType(), we->GetButton(), we->GetButtonState(), mitk::Key_unknown, p, position);
     mitk::EventMapper::MapEvent(we, m_RenderingManager->GetGlobalInteraction());
     mitk::EventMapper::MapEvent(&event, m_RenderingManager->GetGlobalInteraction());
   }
   else if (m_MapperID == 2)
   {
     Point2D p(we->GetDisplayPosition());
     GetDisplayGeometry()->ULDisplayToDisplay(p, p);
     we->SetDisplayPosition(p);
     mitk::EventMapper::MapEvent(we, m_RenderingManager->GetGlobalInteraction());
   }
 }
 
 void mitk::BaseRenderer::KeyPressEvent(mitk::KeyEvent *ke)
 {
   if (m_MapperID == 1)
   {
     Point2D p(ke->GetDisplayPosition());
     Point2D p_mm;
     Point3D position;
     GetDisplayGeometry()->ULDisplayToDisplay(p, p);
     GetDisplayGeometry()->DisplayToWorld(p, p_mm);
     GetDisplayGeometry()->Map(p_mm, position);
     mitk::KeyEvent event(this, ke->GetType(), ke->GetButton(), ke->GetButtonState(), ke->GetKey(), ke->GetText(), p);
     mitk::EventMapper::MapEvent(&event, m_RenderingManager->GetGlobalInteraction());
   }
   else if (m_MapperID == 2)
   {
     Point2D p(ke->GetDisplayPosition());
     GetDisplayGeometry()->ULDisplayToDisplay(p, p);
     ke->SetDisplayPosition(p);
     mitk::EventMapper::MapEvent(ke, m_RenderingManager->GetGlobalInteraction());
   }
 }
 
 void mitk::BaseRenderer::DrawOverlayMouse(mitk::Point2D& itkNotUsed(p2d))
 {
   MITK_INFO<<"BaseRenderer::DrawOverlayMouse()- should be inconcret implementation OpenGLRenderer."<<std::endl;
 }
 
 void mitk::BaseRenderer::RequestUpdate()
 {
   m_RenderingManager->RequestUpdate(this->m_RenderWindow);
 }
 
 void mitk::BaseRenderer::ForceImmediateUpdate()
 {
   m_RenderingManager->ForceImmediateUpdate(this->m_RenderWindow);
 }
 
 unsigned int mitk::BaseRenderer::GetNumberOfVisibleLODEnabledMappers() const
 {
   return m_NumberOfVisibleLODEnabledMappers;
 }
 
 mitk::RenderingManager* mitk::BaseRenderer::GetRenderingManager() const
 {
   return m_RenderingManager.GetPointer();
 }
 
 /*!
  Sets the new Navigation controller
  */
 void mitk::BaseRenderer::SetSliceNavigationController(mitk::SliceNavigationController *SlicenavigationController)
 {
   if (SlicenavigationController == NULL)
     return;
 
   //disconnect old from globalinteraction
   m_RenderingManager->GetGlobalInteraction()->RemoveListener(SlicenavigationController);
 
   //copy worldgeometry
   SlicenavigationController->SetInputWorldTimeGeometry(SlicenavigationController->GetCreatedWorldGeometry());
   SlicenavigationController->Update();
 
   //set new
   m_SliceNavigationController = SlicenavigationController;
   m_SliceNavigationController->SetRenderer(this);
 
   if (m_SliceNavigationController.IsNotNull())
   {
     m_SliceNavigationController->ConnectGeometrySliceEvent(this);
     m_SliceNavigationController->ConnectGeometryUpdateEvent(this);
     m_SliceNavigationController->ConnectGeometryTimeEvent(this, false);
   }
 }
 
 /*!
  Sets the new camera controller and deletes the vtkRenderWindowInteractor in case of the VTKInteractorCameraController
  */
 void mitk::BaseRenderer::SetCameraController(CameraController* cameraController)
 {
   mitk::VtkInteractorCameraController::Pointer vtkInteractorCameraController =
       dynamic_cast<mitk::VtkInteractorCameraController*>(cameraController);
   if (vtkInteractorCameraController.IsNotNull())
     MITK_INFO<<"!!!WARNING!!!: RenderWindow interaction events are no longer handled via CameraController (See Bug #954)."<<std::endl;
   m_CameraController->SetRenderer(NULL);
   m_CameraController = NULL;
   m_CameraController = cameraController;
   m_CameraController->SetRenderer(this);
 }
 
 void mitk::BaseRenderer::PrintSelf(std::ostream& os, itk::Indent indent) const
 {
   os << indent << " MapperID: " << m_MapperID << std::endl;
   os << indent << " Slice: " << m_Slice << std::endl;
   os << indent << " TimeStep: " << m_TimeStep << std::endl;
 
   os << indent << " WorldGeometry: ";
   if (m_WorldGeometry.IsNull())
     os << "NULL" << std::endl;
   else
     m_WorldGeometry->Print(os, indent);
 
   os << indent << " CurrentWorldGeometry2D: ";
   if (m_CurrentWorldGeometry2D.IsNull())
     os << "NULL" << std::endl;
   else
     m_CurrentWorldGeometry2D->Print(os, indent);
 
   os << indent << " CurrentWorldGeometry2DUpdateTime: " << m_CurrentWorldGeometry2DUpdateTime << std::endl;
   os << indent << " CurrentWorldGeometry2DTransformTime: " << m_CurrentWorldGeometry2DTransformTime << std::endl;
 
   os << indent << " DisplayGeometry: ";
   if (m_DisplayGeometry.IsNull())
     os << "NULL" << std::endl;
   else
     m_DisplayGeometry->Print(os, indent);
 
   os << indent << " DisplayGeometryTransformTime: " << m_DisplayGeometryTransformTime << std::endl;
   Superclass::PrintSelf(os, indent);
 }
 
 void mitk::BaseRenderer::SetDepthPeelingEnabled(bool enabled)
 {
   m_DepthPeelingEnabled = enabled;
   m_VtkRenderer->SetUseDepthPeeling(enabled);
 }
 
 void mitk::BaseRenderer::SetMaxNumberOfPeels(int maxNumber)
 {
   m_MaxNumberOfPeels = maxNumber;
   m_VtkRenderer->SetMaximumNumberOfPeels(maxNumber);
 }
diff --git a/Core/Code/Rendering/mitkBaseRenderer.h b/Core/Code/Rendering/mitkBaseRenderer.h
index 27049d754b..f438fb3418 100644
--- a/Core/Code/Rendering/mitkBaseRenderer.h
+++ b/Core/Code/Rendering/mitkBaseRenderer.h
@@ -1,644 +1,655 @@
 /*===================================================================
 
  The Medical Imaging Interaction Toolkit (MITK)
 
  Copyright (c) German Cancer Research Center,
  Division of Medical and Biological Informatics.
  All rights reserved.
 
  This software is distributed WITHOUT ANY WARRANTY; without
  even the implied warranty of MERCHANTABILITY or FITNESS FOR
  A PARTICULAR PURPOSE.
 
  See LICENSE.txt or http://www.mitk.org for details.
 
  ===================================================================*/
 
 #ifndef BASERENDERER_H_HEADER_INCLUDED_C1CCA0F4
 #define BASERENDERER_H_HEADER_INCLUDED_C1CCA0F4
 
 #include "mitkDataStorage.h"
 #include "mitkGeometry2D.h"
 #include "mitkTimeGeometry.h"
 #include "mitkDisplayGeometry.h"
 #include "mitkGeometry2DData.h"
 #include "mitkCameraController.h"
 #include "mitkDisplayPositionEvent.h"
 #include "mitkWheelEvent.h"
 
 
 //#include "mitkMapper.h"
 
 #include "mitkSliceNavigationController.h"
 #include "mitkCameraController.h"
 #include "mitkCameraRotationController.h"
 
 #include "mitkBindDispatcherInteractor.h"
 #include "mitkDispatcher.h"
 
 #include <vtkRenderWindow.h>
 #include <vtkRenderer.h>
 
 #include <map>
 #include <set>
 
 // DEPRECATED
 #include <mitkTimeSlicedGeometry.h>
 
 namespace mitk
 {
 
   class NavigationController;
   class SliceNavigationController;
   class CameraRotationController;
   class CameraController;
   class DataStorage;
   class Mapper;
   class BaseLocalStorageHandler;
   class OverlayManager;
 
 //##Documentation
 //## @brief Organizes the rendering process
 //##
 //## Organizes the rendering process. A Renderer contains a reference to a
 //## DataStorage and asks the mappers of the data objects to render
 //## the data into the renderwindow it is associated to.
 //##
 //## \#Render() checks if rendering is currently allowed by calling
 //## RenderWindow::PrepareRendering(). Initialization of a rendering context
 //## can also be performed in this method.
 //##
 //## The actual rendering code has been moved to \#Repaint()
 //## Both \#Repaint() and \#Update() are declared protected now.
 //##
 //## Note: Separation of the Repaint and Update processes (rendering vs
 //## creating a vtk prop tree) still needs to be worked on. The whole
 //## rendering process also should be reworked to use VTK based classes for
 //## both 2D and 3D rendering.
 //## @ingroup Renderer
   class MITK_CORE_EXPORT BaseRenderer: public itk::Object
   {
   public:
     typedef std::map<vtkRenderWindow*, BaseRenderer*> BaseRendererMapType;
     static BaseRendererMapType baseRendererMap;
 
     static BaseRenderer* GetInstance(vtkRenderWindow * renWin);
     static void AddInstance(vtkRenderWindow* renWin, BaseRenderer* baseRenderer);
     static void RemoveInstance(vtkRenderWindow* renWin);
 
     static BaseRenderer* GetByName(const std::string& name);
     static vtkRenderWindow* GetRenderWindowByName(const std::string& name);
 
 #pragma GCC visibility push(default)
     itkEventMacro( RendererResetEvent, itk::AnyEvent );
 #pragma GCC visibility pop
 
     /** Standard class typedefs. */
     mitkClassMacro(BaseRenderer, itk::Object);
 
     BaseRenderer(const char* name = NULL, vtkRenderWindow * renWin = NULL, mitk::RenderingManager* rm = NULL);
 
     //##Documentation
     //## @brief MapperSlotId defines which kind of mapper (e.g., 2D or 3D) shoud be used.
     typedef int MapperSlotId;
 
     enum StandardMapperSlot
     {
       Standard2D = 1, Standard3D = 2
     };
 
     virtual void SetDataStorage(DataStorage* storage);  ///< set the datastorage that will be used for rendering
 
     //##Documentation
     //## return the DataStorage that is used for rendering
     virtual DataStorage::Pointer GetDataStorage() const
     {
       return m_DataStorage.GetPointer();
     }
 
     //##Documentation
     //## @brief Access the RenderWindow into which this renderer renders.
     vtkRenderWindow* GetRenderWindow() const
     {
       return m_RenderWindow;
     }
     vtkRenderer* GetVtkRenderer() const
     {
       return m_VtkRenderer;
     }
 
     //##Documentation
     //## @brief Returns the Dispatcher which handles Events for this BaseRenderer
     Dispatcher::Pointer GetDispatcher() const;
 
     //##Documentation
     //## @brief Default mapper id to use.
     static const MapperSlotId defaultMapper;
 
     //##Documentation
     //## @brief Do the rendering and flush the result.
     virtual void Paint();
 
     //##Documentation
     //## @brief Initialize the RenderWindow. Should only be called from RenderWindow.
     virtual void Initialize();
 
     //##Documentation
     //## @brief Called to inform the renderer that the RenderWindow has been resized.
     virtual void Resize(int w, int h);
 
     //##Documentation
     //## @brief Initialize the renderer with a RenderWindow (@a renderwindow).
     virtual void InitRenderer(vtkRenderWindow* renderwindow);
 
     //##Documentation
     //## @brief Set the initial size. Called by RenderWindow after it has become
     //## visible for the first time.
     virtual void InitSize(int w, int h);
 
     //##Documentation
     //## @brief Draws a point on the widget.
     //## Should be used during conferences to show the position of the remote mouse
     virtual void DrawOverlayMouse(Point2D& p2d);
 
     //##Documentation
     //## @brief Set/Get the WorldGeometry (m_WorldGeometry) for 3D and 2D rendering, that describing the
     //## (maximal) area to be rendered.
     //##
     //## Depending of the type of the passed Geometry3D more or less information can be extracted:
     //## \li if it is a Geometry2D (which is a sub-class of Geometry3D), m_CurrentWorldGeometry2D is
     //## also set to point to it. m_WorldTimeGeometry is set to NULL.
     //## \li if it is a TimeGeometry, m_WorldTimeGeometry is also set to point to it.
     //## If m_WorldTimeGeometry contains instances of SlicedGeometry3D, m_CurrentWorldGeometry2D is set to
     //## one of geometries stored in the SlicedGeometry3D according to the value of m_Slice;  otherwise
     //## a PlaneGeometry describing the top of the bounding-box of the Geometry3D is set as the
     //## m_CurrentWorldGeometry2D.
     //## \li otherwise a PlaneGeometry describing the top of the bounding-box of the Geometry3D
     //## is set as the m_CurrentWorldGeometry2D. m_WorldTimeGeometry is set to NULL.
     //## @todo add calculation of PlaneGeometry describing the top of the bounding-box of the Geometry3D
     //## when the passed Geometry3D is not sliced.
     //## \sa m_WorldGeometry
     //## \sa m_WorldTimeGeometry
     //## \sa m_CurrentWorldGeometry2D
     virtual void SetWorldGeometry3D(Geometry3D* geometry);
     virtual void SetWorldTimeGeometry(mitk::TimeGeometry* geometry);
 
 
     /**
     * \deprecatedSince{2013_09} Please use TimeGeometry instead of TimeSlicedGeometry. For more information see http://www.mitk.org/Development/Refactoring%20of%20the%20Geometry%20Classes%20-%20Part%201
     */
     DEPRECATED(void SetWorldGeometry3D(TimeSlicedGeometry* geometry));
 
 
     itkGetConstObjectMacro(WorldGeometry, Geometry3D)
     itkGetObjectMacro(WorldGeometry, Geometry3D)
     itkGetConstObjectMacro(WorldTimeGeometry, TimeGeometry)
     itkGetObjectMacro(WorldTimeGeometry, TimeGeometry)
 
     //##Documentation
     //## @brief Get the current 3D-worldgeometry (m_CurrentWorldGeometry) used for 3D-rendering
     itkGetConstObjectMacro(CurrentWorldGeometry, Geometry3D)
 
     //##Documentation
     //## @brief Get the current 2D-worldgeometry (m_CurrentWorldGeometry2D) used for 2D-rendering
     itkGetConstObjectMacro(CurrentWorldGeometry2D, Geometry2D)
 
     //##Documentation
     //## Calculates the bounds of the DataStorage (if it contains any valid data),
     //## creates a geometry from these bounds and sets it as world geometry of the renderer.
     //##
     //## Call this method to re-initialize the renderer to the current DataStorage
     //## (e.g. after loading an additional dataset), to ensure that the view is
     //## aligned correctly.
     //## \warn This is not implemented yet.
     virtual bool SetWorldGeometryToDataStorageBounds()
     {
       return false;
     }
 
     //##Documentation
     //## @brief Set/Get the DisplayGeometry (for 2D rendering)
     //##
     //## The DisplayGeometry describes which part of the Geometry2D m_CurrentWorldGeometry2D
     //## is displayed.
     virtual void SetDisplayGeometry(DisplayGeometry* geometry2d);
 
     itkGetConstObjectMacro(DisplayGeometry, DisplayGeometry)
     itkGetObjectMacro(DisplayGeometry, DisplayGeometry)
 
     //##Documentation
     //## @brief Set/Get m_Slice which defines together with m_TimeStep the 2D geometry
     //## stored in m_WorldTimeGeometry used as m_CurrentWorldGeometry2D
     //##
     //## \sa m_Slice
     virtual void SetSlice(unsigned int slice);
 
     //##Documentation
     //## @brief Sets an OverlayManager which is used to add various Overlays to this
     //## renderer. If an OverlayManager was already set it will be overwritten.
     void SetOverlayManager(itk::SmartPointer<OverlayManager> overlayManager);
 
     //##Documentation
     //## @brief Get the OverlayManager registered with this renderer
     //## if none was set, it will be created at this point.
     itk::SmartPointer<OverlayManager> GetOverlayManager();
 
     itkGetConstMacro(Slice, unsigned int)
 
     //##Documentation
     //## @brief Set/Get m_TimeStep which defines together with m_Slice the 2D geometry
     //## stored in m_WorldTimeGeometry used as m_CurrentWorldGeometry2D
     //##
     //## \sa m_TimeStep
     virtual void SetTimeStep(unsigned int timeStep);
 
     itkGetConstMacro(TimeStep, unsigned int)
 
     //##Documentation
     //## @brief Get the time-step of a BaseData object which
     //## exists at the time of the currently displayed content
     //##
     //## Returns -1 or mitk::BaseData::m_TimeSteps if there
     //## is no data at the current time.
     //## \sa GetTimeStep, m_TimeStep
     int GetTimeStep(const BaseData* data) const;
 
     //##Documentation
     //## @brief Get the time in ms of the currently displayed content
     //##
     //## \sa GetTimeStep, m_TimeStep
     ScalarType GetTime() const;
 
     //##Documentation
     //## @brief SetWorldGeometry is called according to the geometrySliceEvent,
     //## which is supposed to be a SliceNavigationController::GeometrySendEvent
     virtual void SetGeometry(const itk::EventObject & geometrySliceEvent);
 
     //##Documentation
     //## @brief UpdateWorldGeometry is called to re-read the 2D geometry from the
     //## slice navigation controller
     virtual void UpdateGeometry(const itk::EventObject & geometrySliceEvent);
 
     //##Documentation
     //## @brief SetSlice is called according to the geometrySliceEvent,
     //## which is supposed to be a SliceNavigationController::GeometrySliceEvent
     virtual void SetGeometrySlice(const itk::EventObject & geometrySliceEvent);
 
     //##Documentation
     //## @brief SetTimeStep is called according to the geometrySliceEvent,
     //## which is supposed to be a SliceNavigationController::GeometryTimeEvent
     virtual void SetGeometryTime(const itk::EventObject & geometryTimeEvent);
 
     //##Documentation
     //## @brief Get a data object containing the DisplayGeometry (for 2D rendering)
     itkGetObjectMacro(DisplayGeometryData, Geometry2DData)
     //##Documentation
     //## @brief Get a data object containing the WorldGeometry (for 2D rendering)
     itkGetObjectMacro(WorldGeometryData, Geometry2DData)
 
     //##Documentation
     //## @brief Get a DataNode pointing to a data object containing the WorldGeometry (3D and 2D rendering)
     itkGetObjectMacro(WorldGeometryNode, DataNode)
     //##Documentation
     //## @brief Get a DataNode pointing to a data object containing the DisplayGeometry (for 2D rendering)
     itkGetObjectMacro(DisplayGeometryNode, DataNode)
     //##Documentation
     //## @brief Get a DataNode pointing to a data object containing the current 2D-worldgeometry m_CurrentWorldGeometry2D (for 2D rendering)
     itkGetObjectMacro(CurrentWorldGeometry2DNode, DataNode)
 
     //##Documentation
     //## @brief Sets timestamp of CurrentWorldGeometry2D and DisplayGeometry and forces so reslicing in that renderwindow
     void SendUpdateSlice();
 
     //##Documentation
     //## @brief Get timestamp of last call of SetCurrentWorldGeometry2D
     unsigned long GetCurrentWorldGeometry2DUpdateTime()
     {
       return m_CurrentWorldGeometry2DUpdateTime;
     }
     //##Documentation
     //## @brief Get timestamp of last call of SetDisplayGeometry
     unsigned long GetDisplayGeometryUpdateTime()
     {
       return m_CurrentWorldGeometry2DUpdateTime;
     }
     //##Documentation
     //## @brief Get timestamp of last change of current TimeStep
     unsigned long GetTimeStepUpdateTime()
     {
       return m_TimeStepUpdateTime;
     }
 
     //##Documentation
     //## @brief Perform a picking: find the x,y,z world coordinate of a
     //## display x,y coordinate.
     //## @warning Has to be overwritten in subclasses for the 3D-case.
     //##
     //## Implemented here only for 2D-rendering by using
     //## m_DisplayGeometry
     virtual void PickWorldPoint(const Point2D& diplayPosition, Point3D& worldPosition) const;
 
     /** \brief Determines the object (mitk::DataNode) closest to the current
      * position by means of picking
      *
      * \warning Implementation currently empty for 2D rendering; intended to be
      * implemented for 3D renderers */
     virtual DataNode* PickObject(const Point2D& /*displayPosition*/, Point3D& /*worldPosition*/) const
     {
       return NULL;
     }
 
     //##Documentation
     //## @brief Get the MapperSlotId to use.
     itkGetMacro(MapperID, MapperSlotId)
     itkGetConstMacro(MapperID, MapperSlotId)
 
 
     //##Documentation
     //## @brief Set the MapperSlotId to use.
     itkSetMacro(MapperID, MapperSlotId)
 
     //##Documentation
     //## @brief Has the renderer the focus?
     itkGetMacro(Focused, bool)
     //##Documentation
     //## @brief Tell the renderer that it is focused. The caller is responsible for focus management,
     //## not the renderer itself.
     itkSetMacro(Focused, bool)
 
     //##Documentation
     //## @brief Sets whether depth peeling is enabled or not
     void SetDepthPeelingEnabled(bool enabled);  //##Documentation
     //## @brief Sets maximal number of peels
     void SetMaxNumberOfPeels(int maxNumber);
 
     itkGetMacro(Size, int*)
 
     void SetSliceNavigationController(SliceNavigationController* SlicenavigationController);
     void SetCameraController(CameraController* cameraController);
     itkGetObjectMacro(CameraController, CameraController)
     itkGetObjectMacro(SliceNavigationController, SliceNavigationController)
     itkGetObjectMacro(CameraRotationController, CameraRotationController)
 
     itkGetMacro(EmptyWorldGeometry, bool)
 
+    //##Documentation
+    //## @brief Tells if the displayed region is shifted and rescaled if the render window is resized.
+    itkGetMacro(KeepDisplayedRegion, bool)
+    //##Documentation
+    //## @brief Tells if the displayed region should be shifted and rescaled if the render window is resized.
+    itkSetMacro(KeepDisplayedRegion, bool)
+
     //##Documentation
     //## @brief Mouse event dispatchers
     //## @note for internal use only. preliminary.
     virtual void MousePressEvent(MouseEvent*);
     //##Documentation
     //## @brief Mouse event dispatchers
     //## @note for internal use only. preliminary.
     virtual void MouseReleaseEvent(MouseEvent*);
     //##Documentation
     //## @brief Mouse event dispatchers
     //## @note for internal use only. preliminary.
     virtual void MouseMoveEvent(MouseEvent*);
     //##Documentation
     //## @brief Wheel event dispatcher
     //## @note for internal use only. preliminary.
     virtual void WheelEvent(mitk::WheelEvent* we);
     //##Documentation
     //## @brief Key event dispatcher
     //## @note for internal use only. preliminary.
     virtual void KeyPressEvent(KeyEvent*);
 
     //##Documentation
     //## @brief get the name of the Renderer
     //## @note
     const char * GetName() const
     {
       return m_Name.c_str();
     }
 
     //##Documentation
     //## @brief get the x_size of the RendererWindow
     //## @note
     int GetSizeX() const
     {
       return m_Size[0];
     }
 
     //##Documentation
     //## @brief get the y_size of the RendererWindow
     //## @note
     int GetSizeY() const
     {
       return m_Size[1];
     }
 
     const double* GetBounds() const;
 
     void RequestUpdate();
     void ForceImmediateUpdate();
 
     /** Returns number of mappers which are visible and have level-of-detail
      * rendering enabled */
     unsigned int GetNumberOfVisibleLODEnabledMappers() const;
 
     ///**
     //* \brief Setter for the RenderingManager that handles this instance of BaseRenderer
     //*/
     //void SetRenderingManager( mitk::RenderingManager* );
 
     /**
      * \brief Getter for the RenderingManager that handles this instance of BaseRenderer
      */
     virtual mitk::RenderingManager* GetRenderingManager() const;
 
     /**
      * \brief Provides (1) world coordinates for a given mouse position and (2)
      * translates mousePosition to Display coordinates
      */
     virtual Point3D Map2DRendererPositionTo3DWorldPosition(Point2D* mousePosition) const;
 
   protected:
 
     virtual ~BaseRenderer();
 
     //##Documentation
     //## @brief Call update of all mappers. To be implemented in subclasses.
     virtual void Update() = 0;
 
     vtkRenderWindow* m_RenderWindow;
     vtkRenderer* m_VtkRenderer;
 
     //##Documentation
     //## @brief MapperSlotId to use. Defines which kind of mapper (e.g., 2D or 3D) shoud be used.
     MapperSlotId m_MapperID;
 
     //##Documentation
     //## @brief The DataStorage that is used for rendering.
     DataStorage::Pointer m_DataStorage;
 
     //##Documentation
     //## @brief The RenderingManager that manages this instance
     RenderingManager::Pointer m_RenderingManager;
 
     //##Documentation
     //## @brief Timestamp of last call of Update().
     unsigned long m_LastUpdateTime;
 
     //##Documentation
     //## @brief CameraController for 3D rendering
     //## @note preliminary.
     CameraController::Pointer m_CameraController;
     SliceNavigationController::Pointer m_SliceNavigationController;
     CameraRotationController::Pointer m_CameraRotationController;
 
     //##Documentation
     //## @brief Size of the RenderWindow.
     int m_Size[2];
 
     //##Documentation
     //## @brief Contains whether the renderer that it is focused. The caller of
     //## SetFocused is responsible for focus management, not the renderer itself.
     //## is doubled because of mitk::FocusManager in GlobalInteraction!!! (ingmar)
     bool m_Focused;
 
     //##Documentation
     //## @brief Sets m_CurrentWorldGeometry2D
     virtual void SetCurrentWorldGeometry2D(Geometry2D* geometry2d);
 
     //##Documentation
     //## @brief Sets m_CurrentWorldGeometry
     virtual void SetCurrentWorldGeometry(Geometry3D* geometry);
 
     //##Documentation
     //## @brief This method is called during the rendering process to update or render the Overlays
     //## which are stored in the OverlayManager
     void UpdateOverlays();
 
 
   private:
     //##Documentation
     //## Pointer to the worldgeometry, describing the maximal area to be rendered
     //## (3D as well as 2D).
     //## It is const, since we are not allowed to change it (it may be taken
     //## directly from the geometry of an image-slice and thus it would be
     //## very strange when suddenly the image-slice changes its geometry).
     //## \sa SetWorldGeometry
     Geometry3D::Pointer m_WorldGeometry;
 
     itk::SmartPointer<OverlayManager> m_OverlayManager;
 
     //##Documentation
     //## m_WorldTimeGeometry is set by SetWorldGeometry if the passed Geometry3D is a
     //## TimeGeometry (or a sub-class of it). If it contains instances of SlicedGeometry3D,
     //## m_Slice and m_TimeStep (set via SetSlice and SetTimeStep, respectively) define
     //## which 2D geometry stored in m_WorldTimeGeometry (if available)
     //## is used as m_CurrentWorldGeometry2D.
     //## \sa m_CurrentWorldGeometry2D
     TimeGeometry::Pointer m_WorldTimeGeometry;
 
     //##Documentation
     //## Pointer to the current 3D-worldgeometry.
     Geometry3D::Pointer m_CurrentWorldGeometry;
 
     //##Documentation
     //## Pointer to the current 2D-worldgeometry. The 2D-worldgeometry
     //## describes the maximal area (2D manifold) to be rendered in case we
     //## are doing 2D-rendering. More precisely, a subpart of this according
     //## to m_DisplayGeometry is displayed.
     //## It is const, since we are not allowed to change it (it may be taken
     //## directly from the geometry of an image-slice and thus it would be
     //## very strange when suddenly the image-slice changes its geometry).
     Geometry2D::Pointer m_CurrentWorldGeometry2D;
 
     //##Documentation
     //## Pointer to the displaygeometry. The displaygeometry describes the
     //## geometry of the \em visible area in the window controlled by the renderer
     //## in case we are doing 2D-rendering.
     //## It is const, since we are not allowed to change it.
     DisplayGeometry::Pointer m_DisplayGeometry;
 
     //##Documentation
     //## Defines together with m_Slice which 2D geometry stored in m_WorldTimeGeometry
     //## is used as m_CurrentWorldGeometry2D: m_WorldTimeGeometry->GetGeometry2D(m_Slice, m_TimeStep).
     //## \sa m_WorldTimeGeometry
     unsigned int m_Slice;
     //##Documentation
     //## Defines together with m_TimeStep which 2D geometry stored in m_WorldTimeGeometry
     //## is used as m_CurrentWorldGeometry2D: m_WorldTimeGeometry->GetGeometry2D(m_Slice, m_TimeStep).
     //## \sa m_WorldTimeGeometry
     unsigned int m_TimeStep;
 
     //##Documentation
     //## @brief timestamp of last call of SetWorldGeometry
     itk::TimeStamp m_CurrentWorldGeometry2DUpdateTime;
 
     //##Documentation
     //## @brief timestamp of last call of SetDisplayGeometry
     itk::TimeStamp m_DisplayGeometryUpdateTime;
 
     //##Documentation
     //## @brief timestamp of last change of the current time step
     itk::TimeStamp m_TimeStepUpdateTime;
 
     //##Documentation
     //## @brief Helper class which establishes connection between Interactors and Dispatcher via a common DataStorage.
     BindDispatcherInteractor* m_BindDispatcherInteractor;
 
+    //##Documentation
+    //## @brief Tells if the displayed region should be shifted or rescaled if the render window is resized.
+    bool m_KeepDisplayedRegion;
+
   protected:
     virtual void PrintSelf(std::ostream& os, itk::Indent indent) const;
 
     //##Documentation
     //## Data object containing the m_WorldGeometry defined above.
     Geometry2DData::Pointer m_WorldGeometryData;
     //##Documentation
     //## Data object containing the m_DisplayGeometry defined above.
     Geometry2DData::Pointer m_DisplayGeometryData;
     //##Documentation
     //## Data object containing the m_CurrentWorldGeometry2D defined above.
     Geometry2DData::Pointer m_CurrentWorldGeometry2DData;
 
     //##Documentation
     //## DataNode objects containing the m_WorldGeometryData defined above.
     DataNode::Pointer m_WorldGeometryNode;
     //##Documentation
     //## DataNode objects containing the m_DisplayGeometryData defined above.
     DataNode::Pointer m_DisplayGeometryNode;
     //##Documentation
     //## DataNode objects containing the m_CurrentWorldGeometry2DData defined above.
     DataNode::Pointer m_CurrentWorldGeometry2DNode;
 
     //##Documentation
     //## @brief test only
     unsigned long m_DisplayGeometryTransformTime;
     //##Documentation
     //## @brief test only
     unsigned long m_CurrentWorldGeometry2DTransformTime;
 
     std::string m_Name;
 
     double m_Bounds[6];
 
     bool m_EmptyWorldGeometry;
 
     bool m_DepthPeelingEnabled;
 
     int m_MaxNumberOfPeels;
 
     typedef std::set<Mapper *> LODEnabledMappersType;
 
     /** Number of mappers which are visible and have level-of-detail
      * rendering enabled */
     unsigned int m_NumberOfVisibleLODEnabledMappers;
 
     // Local Storage Handling for mappers
 
   protected:
 
     std::list<mitk::BaseLocalStorageHandler*> m_RegisteredLocalStorageHandlers;
 
   public:
 
     void RemoveAllLocalStorages();
     void RegisterLocalStorageHandler(mitk::BaseLocalStorageHandler *lsh);
     void UnregisterLocalStorageHandler(mitk::BaseLocalStorageHandler *lsh);
 
   };
 
 } // namespace mitk
 
 #endif /* BASERENDERER_H_HEADER_INCLUDED_C1CCA0F4 */