]> Creatis software - cpPlugins.git/blobdiff - lib/cpExtensions/Visualization/ImageSliceActors.cxx
Double click widget integrated with segmentation and deformation filters.
[cpPlugins.git] / lib / cpExtensions / Visualization / ImageSliceActors.cxx
index 450bdb688e129b33390c3ce64fd7069d55fd97fe..ee4947e834d4394463a547de1e958d4752e66f58 100644 (file)
@@ -1,23 +1,18 @@
 #include <cpExtensions/Visualization/ImageSliceActors.h>
 
-#include <cmath>
 #include <sstream>
 
 #include <vtkAlgorithmOutput.h>
 #include <vtkCamera.h>
 #include <vtkCellArray.h>
 #include <vtkImageData.h>
-#include <vtkInformation.h>
-#include <vtkPlane.h>
 #include <vtkPoints.h>
 #include <vtkProperty.h>
 #include <vtkRenderer.h>
 #include <vtkRendererCollection.h>
 #include <vtkRenderWindow.h>
 #include <vtkRenderWindowInteractor.h>
-#include <vtkStreamingDemandDrivenPipeline.h>
 #include <vtkTextProperty.h>
-#include <vtkWindowLevelLookupTable.h>
 
 // -------------------------------------------------------------------------
 cpExtensions::Visualization::ImageSliceActors*
@@ -27,97 +22,121 @@ New( )
   return( new Self( ) );
 }
 
+// -------------------------------------------------------------------------
+cpExtensions::Visualization::
+ImageBlender* cpExtensions::Visualization::ImageSliceActors::
+GetBlender( )
+{
+  return( this->m_ImageBlender );
+}
+
+// -------------------------------------------------------------------------
+const cpExtensions::Visualization::
+ImageBlender* cpExtensions::Visualization::ImageSliceActors::
+GetBlender( ) const
+{
+  return( this->m_ImageBlender );
+}
+
+// -------------------------------------------------------------------------
+void cpExtensions::Visualization::ImageSliceActors::
+SetBlender( ImageBlender* blender )
+{
+  this->m_ImageBlender = blender;
+
+  // Create mapper and actors
+  this->m_ImageMapper = vtkSmartPointer< vtkImageSliceMapper >::New( );
+  this->m_ImageMapper->SetInputConnection(
+    this->m_ImageBlender->GetOutputPort( )
+    );
+  this->m_ImageMapper->SetOrientation( 0 );
+  this->m_ImageMapper->Update( );
+
+  // Create actor
+  this->m_ImageActor = vtkSmartPointer< vtkImageActor >::New( );
+  this->m_ImageActor->SetMapper( this->m_ImageMapper );
+  this->m_ImageActor->SetInterpolate( this->m_Interpolate );
+  this->m_ImageActor->Modified( );
+
+  if( this->m_Style.GetPointer( ) != NULL )
+    this->m_Style->AssociateImageActor( this->m_ImageActor );
+  this->AddItem( this->m_ImageActor );
+
+  this->SetSliceNumber( this->GetSliceNumberMinValue( ) );
+  this->ResetCursor( );
+  this->Modified( );
+}
+
 // -------------------------------------------------------------------------
 void cpExtensions::Visualization::ImageSliceActors::
-AddInputConnection( vtkAlgorithmOutput* aout, int axis )
+SetAxis( int axis )
+{
+  this->m_ImageMapper->SetOrientation( axis );
+  this->m_ImageMapper->Update( );
+  this->SetSliceNumber( this->GetSliceNumberMinValue( ) );
+  this->m_ImageActor->Modified( );
+  this->Modified( );
+  this->ResetCamera( );
+}
+
+// -------------------------------------------------------------------------
+void cpExtensions::Visualization::ImageSliceActors::
+AddInputConnection( vtkAlgorithmOutput* aout )
 {
   // Get input vtkImageData
   if( aout == NULL )
     return;
-  vtkAlgorithm* producer = aout->GetProducer( );
-  vtkImageData* data = dynamic_cast< vtkImageData* >(
-    producer->GetOutputDataObject( aout->GetIndex( ) )
-    );
-  if( data == NULL )
-    return;
 
-  // Try to infere if input comes from a color mapping filter
-  vtkImageMapToColors* new_map =
-    dynamic_cast< vtkImageMapToColors* >( producer );
-  if( new_map == NULL )
+  if( this->m_ImageBlender.GetPointer( ) == NULL )
   {
-    // Configure LUT, if possible (NULL is returned if not)
-    this->_ConfigureNewLUT( data );
-    new_map = *( this->m_ImageMaps.rbegin( ) );
-    if( new_map != NULL )
+    // Try to infere if input comes from a color mapping filter
+    vtkAlgorithm* producer = aout->GetProducer( );
+    vtkSmartPointer< ImageBlender > blender =
+      dynamic_cast< ImageBlender* >( producer );
+    if( blender.GetPointer( ) == NULL )
     {
-      new_map->SetInputConnection( aout );
-      new_map->Update( );
+      // Ok, create a new blender with default window level
+      vtkImageData* data = dynamic_cast< vtkImageData* >(
+        producer->GetOutputDataObject( aout->GetIndex( ) )
+        );
+      double r[ 2 ];
+      data->GetScalarRange( r );
+
+      blender = vtkSmartPointer< ImageBlender >::New( );
+      blender->AddInputConnection( aout );
+      blender->SetWindow( r[ 1 ] - r[ 0 ] );
+      blender->SetLevel( ( r[ 1 ] + r[ 0 ] ) / double( 2 ) );
 
     } // fi
+    this->SetBlender( blender );
   }
   else
-    this->m_ImageMaps.push_back( new_map );
-
-  // Update window level values
-  if( new_map != NULL )
-  {
-    double range[ 2 ];
-    dynamic_cast< vtkImageData* >( new_map->GetInput( ) )->
-      GetScalarRange( range );
-    this->m_MinWindow = double( 0 );
-    this->m_MaxWindow = range[ 1 ] - range[ 0 ];
-    this->m_MinLevel = range[ 0 ];
-    this->m_MaxLevel = range[ 1 ];
-
-  } // fi
-
-  // Create mapper and actors
-  vtkSmartPointer< vtkImageSliceMapper > mapper =
-    vtkSmartPointer< vtkImageSliceMapper >::New( );
-  if( new_map != NULL )
-    mapper->SetInputConnection( new_map->GetOutputPort( ) );
-  else
-    mapper->SetInputConnection( aout );
-  this->m_SliceMappers.push_back( mapper );
-  this->_ConfigureNewInput( axis );
+    this->m_ImageBlender->AddInputConnection( aout );
 }
 
 // -------------------------------------------------------------------------
 void cpExtensions::Visualization::ImageSliceActors::
-AddInputData( vtkImageData* data, int axis )
+AddInputData( vtkImageData* data )
 {
-  // Update window level values
-  if( this->m_ImageMaps.size( ) == 0 )
-  {
-    double range[ 2 ];
-    data->GetScalarRange( range );
-    this->m_MinWindow = double( 0 );
-    this->m_MaxWindow = range[ 1 ] - range[ 0 ];
-    this->m_MinLevel = range[ 0 ];
-    this->m_MaxLevel = range[ 1 ];
-
-  } // fi
+  // Get input vtkImageData
+  if( data == NULL )
+    return;
 
-  // Configure LUT, if possible (NULL is returned if not)
-  this->_ConfigureNewLUT( data );
-  vtkImageMapToColors* new_map = *( this->m_ImageMaps.rbegin( ) );
-  if( new_map != NULL )
+  if( this->m_ImageBlender.GetPointer( ) == NULL )
   {
-    new_map->SetInputData( data );
-    new_map->Update( );
-
-  } // fi
-
-  // Create mapper and actors
-  vtkSmartPointer< vtkImageSliceMapper > mapper =
-    vtkSmartPointer< vtkImageSliceMapper >::New( );
-  if( new_map != NULL )
-    mapper->SetInputConnection( new_map->GetOutputPort( ) );
+    // Create a new blender with default window level
+    double r[ 2 ];
+    data->GetScalarRange( r );
+
+    vtkSmartPointer< ImageBlender > blender =
+      vtkSmartPointer< ImageBlender >::New( );
+    blender->AddInputData( data );
+    blender->SetWindow( r[ 1 ] - r[ 0 ] );
+    blender->SetLevel( ( r[ 1 ] + r[ 0 ] ) / double( 2 ) );
+    this->SetBlender( blender );
+  }
   else
-    mapper->SetInputData( data );
-  this->m_SliceMappers.push_back( mapper );
-  this->_ConfigureNewInput( axis );
+    this->m_ImageBlender->AddInputData( data );
 }
 
 // -------------------------------------------------------------------------
@@ -125,27 +144,41 @@ void cpExtensions::Visualization::ImageSliceActors::
 Clear( )
 {
   // Reset values
-  this->m_MinWindow = double( 0 );
-  this->m_MaxWindow = double( 0 );
-  this->m_MinLevel = double( 0 );
-  this->m_MaxLevel = double( 0 );
+  this->m_VisibleExtent[ 0 ] =
+    this->m_VisibleExtent[ 2 ] =
+    this->m_VisibleExtent[ 4 ] = -1;
+  this->m_VisibleExtent[ 1 ] =
+    this->m_VisibleExtent[ 3 ] =
+    this->m_VisibleExtent[ 5 ] = 0;
+  this->m_VisibleBounds[ 0 ] =
+    this->m_VisibleBounds[ 2 ] =
+    this->m_VisibleBounds[ 4 ] = double( 0 );
+  this->m_VisibleBounds[ 1 ] =
+    this->m_VisibleBounds[ 3 ] =
+    this->m_VisibleBounds[ 5 ] = double( 0 );
 
   // Unbind from container
   this->RemoveAllItems( );
 
   // Delete all images
-  this->m_ImageMaps.clear( );
-  this->m_SliceMappers.clear( );
-  this->m_ImageActors.clear( );
+  this->m_ImageActor   = NULL;
+  this->m_ImageMapper  = NULL;
+  this->m_ImageBlender = NULL;
 
   // Reconfigure unique objects
-  this->m_Cursor        = vtkSmartPointer< vtkPolyData >::New( );
-  this->m_CursorMapper  = vtkSmartPointer< vtkPolyDataMapper >::New( );
-  this->m_CursorActor   = vtkSmartPointer< vtkActor >::New( );
-  this->m_Plane         = vtkSmartPointer< vtkPolyData >::New( );
-  this->m_PlaneMapper   = vtkSmartPointer< vtkPolyDataMapper >::New( );
-  this->m_TextActor     = vtkSmartPointer< vtkTextActor >::New( );
-  this->m_PlaneActor    = vtkSmartPointer< vtkActor >::New( );
+  this->m_Cursor               = vtkSmartPointer< vtkPolyData >::New( );
+  this->m_CursorMapper         = vtkSmartPointer< vtkPolyDataMapper >::New( );
+  this->m_CursorActor          = vtkSmartPointer< vtkActor >::New( );
+  this->m_HorizontalLine       = vtkSmartPointer< vtkPolyData >::New( );
+  this->m_HorizontalLineMapper = vtkSmartPointer< vtkPolyDataMapper >::New( );
+  this->m_HorizontalLineActor  = vtkSmartPointer< vtkActor >::New( );
+  this->m_VerticalLine         = vtkSmartPointer< vtkPolyData >::New( );
+  this->m_VerticalLineMapper   = vtkSmartPointer< vtkPolyDataMapper >::New( );
+  this->m_VerticalLineActor    = vtkSmartPointer< vtkActor >::New( );
+  this->m_Plane                = vtkSmartPointer< vtkPolyData >::New( );
+  this->m_PlaneMapper          = vtkSmartPointer< vtkPolyDataMapper >::New( );
+  this->m_TextActor            = vtkSmartPointer< vtkTextActor >::New( );
+  this->m_PlaneActor           = vtkSmartPointer< vtkActor >::New( );
   this->m_TextBuffer[ 0 ] = '\0';
 
   // Unique objects configuration
@@ -178,6 +211,34 @@ Clear( )
   this->m_CursorMapper->SetInputData( this->m_Cursor );
   this->m_CursorActor->SetMapper( this->m_CursorMapper );
 
+  vtkSmartPointer< vtkPoints > h_points =
+    vtkSmartPointer< vtkPoints >::New( );
+  vtkSmartPointer< vtkCellArray > h_lines =
+    vtkSmartPointer< vtkCellArray >::New( );
+  h_points->InsertNextPoint( 0, 0, 0 );
+  h_points->InsertNextPoint( 0, 0, 0 );
+  h_lines->InsertNextCell( 2 );
+  h_lines->InsertCellPoint( 0 );
+  h_lines->InsertCellPoint( 1 );
+  this->m_HorizontalLine->SetPoints( h_points );
+  this->m_HorizontalLine->SetLines( h_lines );
+  this->m_HorizontalLineMapper->SetInputData( this->m_HorizontalLine );
+  this->m_HorizontalLineActor->SetMapper( this->m_HorizontalLineMapper );
+
+  vtkSmartPointer< vtkPoints > v_points =
+    vtkSmartPointer< vtkPoints >::New( );
+  vtkSmartPointer< vtkCellArray > v_lines =
+    vtkSmartPointer< vtkCellArray >::New( );
+  v_points->InsertNextPoint( 0, 0, 0 );
+  v_points->InsertNextPoint( 0, 0, 0 );
+  v_lines->InsertNextCell( 2 );
+  v_lines->InsertCellPoint( 0 );
+  v_lines->InsertCellPoint( 1 );
+  this->m_VerticalLine->SetPoints( v_points );
+  this->m_VerticalLine->SetLines( v_lines );
+  this->m_VerticalLineMapper->SetInputData( this->m_VerticalLine );
+  this->m_VerticalLineActor->SetMapper( this->m_VerticalLineMapper );
+
   vtkSmartPointer< vtkPoints > plane_points =
     vtkSmartPointer< vtkPoints >::New( );
   vtkSmartPointer< vtkCellArray > plane_lines =
@@ -215,6 +276,8 @@ Clear( )
 
   // Update actor collection
   this->AddItem( this->m_CursorActor );
+  this->AddItem( this->m_HorizontalLineActor );
+  this->AddItem( this->m_VerticalLineActor );
   this->AddItem( this->m_TextActor );
   this->AddItem( this->m_PlaneActor );
 }
@@ -245,22 +308,26 @@ GetStyle( ) const
 vtkImageData* cpExtensions::Visualization::ImageSliceActors::
 GetInputImage( unsigned int id )
 {
-  vtkAlgorithmOutput* aout = this->m_ImageMaps[ id ]->GetOutputPort( );
-  vtkImageData* image = dynamic_cast< vtkImageData* >(
-    aout->GetProducer( )->GetOutputDataObject( aout->GetIndex( ) )
-    );
-  return( image );
+  if( this->m_ImageBlender.GetPointer( ) != NULL )
+    return(
+      dynamic_cast< vtkImageData* >( this->m_ImageBlender->GetInput( id ) )
+      );
+  else
+    return( NULL );
 }
 
 // -------------------------------------------------------------------------
 const vtkImageData* cpExtensions::Visualization::ImageSliceActors::
 GetInputImage( unsigned int id ) const
 {
-  vtkAlgorithmOutput* aout = this->m_ImageMaps[ id ]->GetOutputPort( );
-  const vtkImageData* image = dynamic_cast< const vtkImageData* >(
-    aout->GetProducer( )->GetOutputDataObject( aout->GetIndex( ) )
-    );
-  return( image );
+  if( this->m_ImageBlender.GetPointer( ) != NULL )
+    return(
+      dynamic_cast< const vtkImageData* >(
+        this->m_ImageBlender->GetInput( )
+        )
+      );
+  else
+    return( NULL );
 }
 
 // -------------------------------------------------------------------------
@@ -312,13 +379,13 @@ PushActorsInto( vtkRenderWindow* window, bool force_style )
     }
     else // if( axis == 2 )
     {
-      camera->SetPosition( double( 0 ), double(  0 ), double( -1 ) );
-      camera->SetViewUp  ( double( 0 ), double( -1 ), double(  0 ) );
+      camera->SetPosition( double( 0 ), double(  0 ), double( 1 ) );
+      camera->SetViewUp  ( double( 0 ), double( -1 ), double( 0 ) );
 
     } // fi
 
   } // fi
-  renderer->ResetCamera( );
+  this->ResetCamera( );
   rwi->Render( );
 }
 
@@ -343,31 +410,18 @@ PopActorsFrom( vtkRenderWindow* window )
     rwi->Render( );
 }
 
-// -------------------------------------------------------------------------
-unsigned int cpExtensions::Visualization::ImageSliceActors::
-GetNumberOfImageActors( ) const
-{
-  return( this->m_ImageActors.size( ) );
-}
-
 // -------------------------------------------------------------------------
 vtkImageActor* cpExtensions::Visualization::ImageSliceActors::
-GetImageActor( unsigned int id )
+GetImageActor( )
 {
-  if( id < this->m_ImageActors.size( ) )
-    return( this->m_ImageActors[ id ] );
-  else
-    return( NULL );
+  return( this->m_ImageActor );
 }
 
 // -------------------------------------------------------------------------
 const vtkImageActor* cpExtensions::Visualization::ImageSliceActors::
-GetImageActor( unsigned int id ) const
+GetImageActor( ) const
 {
-  if( id < this->m_ImageActors.size( ) )
-    return( this->m_ImageActors[ id ] );
-  else
-    return( NULL );
+  return( this->m_ImageActor );
 }
 
 // -------------------------------------------------------------------------
@@ -402,14 +456,20 @@ GetPlaneActor( ) const
 vtkPlane* cpExtensions::Visualization::ImageSliceActors::
 GetPlaneFunction( )
 {
-  return( this->m_SliceMappers[ 0 ]->GetSlicePlane( ) );
+  if( this->m_ImageMapper.GetPointer( ) != NULL )
+    return( this->m_ImageMapper->GetSlicePlane( ) );
+  else
+    return( NULL );
 }
 
 // -------------------------------------------------------------------------
 const vtkPlane* cpExtensions::Visualization::ImageSliceActors::
 GetPlaneFunction( ) const
 {
-  return( this->m_SliceMappers[ 0 ]->GetSlicePlane( ) );
+  if( this->m_ImageMapper.GetPointer( ) != NULL )
+    return( this->m_ImageMapper->GetSlicePlane( ) );
+  else
+    return( NULL );
 }
 
 // -------------------------------------------------------------------------
@@ -418,8 +478,7 @@ SetInterpolate( bool v )
 {
   if( this->m_Interpolate != v )
   {
-    for( unsigned int i = 0; i < this->m_ImageActors.size( ); ++i )
-      this->m_ImageActors[ i ]->SetInterpolate( v );
+    this->m_ImageActor->SetInterpolate( v );
     this->m_Interpolate = v;
     this->Modified( );
 
@@ -444,8 +503,8 @@ InterpolateOff( )
 double* cpExtensions::Visualization::ImageSliceActors::
 GetDisplayBounds( ) const
 {
-  if( this->m_ImageActors.size( ) > 0 )
-    return( this->m_ImageActors[ 0 ]->GetDisplayBounds( ) );
+  if( this->m_ImageActor.GetPointer( ) != NULL )
+    return( this->m_ImageActor->GetDisplayBounds( ) );
   else
     return( NULL );
 }
@@ -454,24 +513,29 @@ GetDisplayBounds( ) const
 void cpExtensions::Visualization::ImageSliceActors::
 GetDisplayBounds( double bounds[ 6 ] ) const
 {
-  if( this->m_ImageActors.size( ) == 0 )
+  if( this->m_ImageActor.GetPointer( ) == NULL )
   {
     bounds[ 0 ] = bounds[ 2 ] = bounds[ 4 ] = double( -1 );
     bounds[ 1 ] = bounds[ 3 ] = bounds[ 5 ] = double( -1 );
   }
   else
-    this->m_ImageActors[ 0 ]->GetDisplayBounds( bounds );
+    this->m_ImageActor->GetDisplayBounds( bounds );
 }
 
 // -------------------------------------------------------------------------
 void cpExtensions::Visualization::ImageSliceActors::
 ResetCursor( )
 {
-  if( this->m_SliceMappers.size( ) > 0 )
+  if( this->m_ImageMapper.GetPointer( ) != NULL )
   {
     double bounds[ 6 ];
-    this->m_SliceMappers[ 0 ]->GetInput( )->GetBounds( bounds );
-    double pos[] = { bounds[ 0 ], bounds[ 2 ], bounds[ 4 ] };
+    this->m_ImageMapper->GetInput( )->GetBounds( bounds );
+    double pos[] =
+      {
+        this->m_VisibleBounds[ 0 ],
+        this->m_VisibleBounds[ 2 ],
+        this->m_VisibleBounds[ 4 ]
+      };
     this->SetCursor( pos );
   }
   else
@@ -496,7 +560,7 @@ ResetCursor( )
 void cpExtensions::Visualization::ImageSliceActors::
 SetCursor( double pos[ 3 ] )
 {
-  if( this->m_SliceMappers.size( ) == 0 )
+  if( this->m_ImageMapper.GetPointer( ) == NULL )
     return;
 
   // Get ordered axes
@@ -507,9 +571,8 @@ SetCursor( double pos[ 3 ] )
   int ma1 = a1 << 1;
   int ma2 = a2 << 1;
 
-  double bounds[ 6 ];
-  this->m_SliceMappers[ 0 ]->GetInput( )->GetBounds( bounds );
-
+  // Update cross
+  double* bounds = this->m_VisibleBounds;
   double
     p0[ 3 ], p1[ 3 ], p2[ 3 ], p3[ 3 ],
     p4[ 3 ], p5[ 3 ], p6[ 3 ], p7[ 3 ];
@@ -537,69 +600,52 @@ SetCursor( double pos[ 3 ] )
   this->m_CursorActor->Modified( );
 }
 
-// -------------------------------------------------------------------------
-vtkImageMapToColors* cpExtensions::Visualization::ImageSliceActors::
-GetImageMap( unsigned int id )
-{
-  if( id < this->m_ImageMaps.size( ) )
-    return( this->m_ImageMaps[ id ].GetPointer( ) );
-  else
-    return( NULL );
-}
-
-// -------------------------------------------------------------------------
-const vtkImageMapToColors* cpExtensions::Visualization::ImageSliceActors::
-GetImageMap( unsigned int id ) const
-{
-  if( id < this->m_ImageMaps.size( ) )
-    return( this->m_ImageMaps[ id ].GetPointer( ) );
-  else
-    return( NULL );
-}
-
 // -------------------------------------------------------------------------
 double cpExtensions::Visualization::ImageSliceActors::
 GetMinWindow( ) const
 {
-  return( this->m_MinWindow );
+  if( this->m_ImageBlender.GetPointer( ) != NULL )
+    return( this->m_ImageBlender->GetMinWindow( ) );
+  else
+    return( double( 0 ) );
 }
 
 // -------------------------------------------------------------------------
 double cpExtensions::Visualization::ImageSliceActors::
 GetMaxWindow( ) const
 {
-  return( this->m_MaxWindow );
+  if( this->m_ImageBlender.GetPointer( ) != NULL )
+    return( this->m_ImageBlender->GetMaxWindow( ) );
+  else
+    return( double( 0 ) );
 }
 
 // -------------------------------------------------------------------------
 double cpExtensions::Visualization::ImageSliceActors::
 GetMinLevel( ) const
 {
-  return( this->m_MinLevel );
+  if( this->m_ImageBlender.GetPointer( ) != NULL )
+    return( this->m_ImageBlender->GetMinLevel( ) );
+  else
+    return( double( 0 ) );
 }
 
 // -------------------------------------------------------------------------
 double cpExtensions::Visualization::ImageSliceActors::
 GetMaxLevel( ) const
 {
-  return( this->m_MaxLevel );
+  if( this->m_ImageBlender.GetPointer( ) != NULL )
+    return( this->m_ImageBlender->GetMaxLevel( ) );
+  else
+    return( double( 0 ) );
 }
 
 // -------------------------------------------------------------------------
 double cpExtensions::Visualization::ImageSliceActors::
 GetWindow( ) const
 {
-  if( this->m_ImageMaps.size( ) == 0 )
-    return( double( 0 ) );
-  if( this->m_ImageMaps[ 0 ].GetPointer( ) == NULL )
-    return( double( 0 ) );
-
-  vtkWindowLevelLookupTable* lut =
-    dynamic_cast< vtkWindowLevelLookupTable* >(
-      this->m_ImageMaps[ 0 ]->GetLookupTable( )
-      );
-  if( lut != NULL )
-    return( lut->GetWindow( ) );
+  if( this->m_ImageBlender.GetPointer( ) != NULL )
+    return( this->m_ImageBlender->GetWindow( ) );
   else
     return( double( 0 ) );
 }
@@ -608,17 +654,8 @@ GetWindow( ) const
 double cpExtensions::Visualization::ImageSliceActors::
 GetLevel( ) const
 {
-  if( this->m_ImageMaps.size( ) == 0 )
-    return( double( 0 ) );
-  if( this->m_ImageMaps[ 0 ].GetPointer( ) == NULL )
-    return( double( 0 ) );
-
-  vtkWindowLevelLookupTable* lut =
-    dynamic_cast< vtkWindowLevelLookupTable* >(
-      this->m_ImageMaps[ 0 ]->GetLookupTable( )
-      );
-  if( lut != NULL )
-    return( lut->GetLevel( ) );
+  if( this->m_ImageBlender.GetPointer( ) != NULL )
+    return( this->m_ImageBlender->GetLevel( ) );
   else
     return( double( 0 ) );
 }
@@ -627,175 +664,53 @@ GetLevel( ) const
 void cpExtensions::Visualization::ImageSliceActors::
 SetWindow( double w )
 {
-  if( this->m_ImageMaps.size( ) == 0 )
-    return;
-  if( this->m_ImageMaps[ 0 ].GetPointer( ) == NULL )
-    return;
-  vtkWindowLevelLookupTable* lut =
-    dynamic_cast< vtkWindowLevelLookupTable* >(
-      this->m_ImageMaps[ 0 ]->GetLookupTable( )
-      );
-  if( lut == NULL )
-    return;
-
-  if( w < this->m_MinWindow )
-    w = this->m_MinWindow;
-  if( w > this->m_MaxWindow )
-    w = this->m_MaxWindow;
+  if( this->m_ImageBlender.GetPointer( ) != NULL )
+  {
+    this->m_ImageBlender->SetWindow( w );
+    this->Modified( );
 
-  lut->SetWindow( w );
-  lut->Build( );
-  this->m_ImageMaps[ 0 ]->Modified( );
-  this->Modified( );
+  } // fi
 }
 
 // -------------------------------------------------------------------------
 void cpExtensions::Visualization::ImageSliceActors::
 SetLevel( double l )
 {
-  if( this->m_ImageMaps.size( ) == 0 )
-    return;
-  if( this->m_ImageMaps[ 0 ].GetPointer( ) == NULL )
-    return;
-  vtkWindowLevelLookupTable* lut =
-    dynamic_cast< vtkWindowLevelLookupTable* >(
-      this->m_ImageMaps[ 0 ]->GetLookupTable( )
-      );
-  if( lut == NULL )
-    return;
-
-  if( l < this->m_MinLevel )
-    l = this->m_MinLevel;
-  if( l > this->m_MaxLevel )
-    l = this->m_MaxLevel;
+  if( this->m_ImageBlender.GetPointer( ) != NULL )
+  {
+    this->m_ImageBlender->SetLevel( l );
+    this->Modified( );
 
-  lut->SetLevel( l );
-  lut->Build( );
-  this->m_ImageMaps[ 0 ]->Modified( );
-  this->Modified( );
+  } // fi
 }
 
 // -------------------------------------------------------------------------
 void cpExtensions::Visualization::ImageSliceActors::
 SetWindowLevel( double w, double l )
 {
-  if( this->m_ImageMaps.size( ) == 0 )
-    return;
-  if( this->m_ImageMaps[ 0 ].GetPointer( ) == NULL )
-    return;
-  vtkWindowLevelLookupTable* lut =
-    dynamic_cast< vtkWindowLevelLookupTable* >(
-      this->m_ImageMaps[ 0 ]->GetLookupTable( )
-      );
-  if( lut == NULL )
-    return;
-
-  if( w < this->m_MinWindow )
-    w = this->m_MinWindow;
-  if( w > this->m_MaxWindow )
-    w = this->m_MaxWindow;
-  if( l < this->m_MinLevel )
-    l = this->m_MinLevel;
-  if( l > this->m_MaxLevel )
-    l = this->m_MaxLevel;
-
-  lut->SetWindow( w );
-  lut->SetLevel( l );
-  lut->Build( );
-  this->m_ImageMaps[ 0 ]->Modified( );
-  this->UpdateText( w, l );
-  this->Modified( );
-}
-
-// -------------------------------------------------------------------------
-void cpExtensions::Visualization::ImageSliceActors::
-ResetWindowLevel( )
-{
-  static const double _2 = double( 2 );
-  this->SetWindowLevel(
-    this->m_MaxWindow, ( this->m_MaxLevel + this->m_MinLevel ) / _2
-    );
-}
-
-// -------------------------------------------------------------------------
-void cpExtensions::Visualization::ImageSliceActors::
-SetLookupTable( unsigned int id, vtkLookupTable* lut )
-{
-  if( id < this->m_ImageMaps.size( ) && id > 0 )
+  if( this->m_ImageBlender.GetPointer( ) != NULL )
   {
-    if( this->m_ImageMaps[ id ].GetPointer( ) != NULL )
-    {
-      this->m_ImageMaps[ id ]->SetLookupTable( lut );
-      this->m_ImageMaps[ id ]->Modified( );
-      this->Modified( );
-
-    } // fi
+    this->m_ImageBlender->SetWindowLevel( w, l );
+    this->UpdateText( w, l );
+    this->Modified( );
 
   } // fi
 }
 
 // -------------------------------------------------------------------------
 void cpExtensions::Visualization::ImageSliceActors::
-SetLookupTableAsColor( unsigned int id, double r, double g, double b )
+ResetWindowLevel( )
 {
-  static const double _0 = double( 0 );
-  static const double _2 = double( 2 );
-  static const double _4 = double( 4 );
-  static const double _6 = double( 6 );
-  static const double _OPACITY = double( 0.6 );
-
-  // Check ID consistency
-  if( id == 0 || id >= this->m_ImageMaps.size( ) )
-    return;
-
-  // Get image scalar range
-  vtkAlgorithmOutput* aout = this->m_ImageMaps[ id ]->GetOutputPort( );
-  vtkImageData* image = dynamic_cast< vtkImageData* >(
-    aout->GetProducer( )->GetOutputDataObject( aout->GetIndex( ) )
-    );
-  double range[ 2 ];
-  image->GetScalarRange( range );
-
-  // Get HSV from display color
-  double cmax = ( r > g )? r: g; cmax = ( b > cmax )? b: cmax;
-  double cmin = ( r < g )? r: g; cmin = ( b < cmin )? b: cmin;
-  double d = cmax - cmin;
-
-  double saturation = ( std::fabs( cmax ) > _0 )? d / cmax: _0;
-  double value = cmax;
-  double hue = _0;
-  if( d > _0 )
-  {
-    if( r == cmax )
-      hue = std::fmod( ( g - b ) / d, _6 );
-    else if( g == cmax )
-      hue = ( ( b - r ) / d ) + _2;
-    else if( b == cmax )
-      hue = ( ( r - g ) / d ) + _4;
-    hue /= _6;
-
-  } // fi
-
-  // Define new lookup table
-  vtkSmartPointer< vtkLookupTable > lut =
-    vtkSmartPointer< vtkLookupTable >::New( );
-  lut->SetScaleToLinear( );
-  lut->SetNanColor( _0, _0, _0, _0 );
-  lut->SetTableRange( range[ 0 ], range[ 1 ] );
-  lut->SetAlphaRange( _0, _OPACITY );
-  lut->SetHueRange( _0, hue );
-  lut->SetSaturationRange( _0, saturation );
-  lut->SetValueRange( _0, value );
-  lut->Build( );
-  this->SetLookupTable( id, lut );
+  std::cerr << "ACA Resetear" << std::endl;
+  std::exit( 1 );
 }
 
 // -------------------------------------------------------------------------
 int cpExtensions::Visualization::ImageSliceActors::
 GetAxis( ) const
 {
-  if( this->m_SliceMappers.size( ) > 0 )
-    return( this->m_SliceMappers[ 0 ]->GetOrientation( ) );
+  if( this->m_ImageMapper.GetPointer( ) != NULL )
+    return( this->m_ImageMapper->GetOrientation( ) );
   else
     return( -1 );
 }
@@ -804,8 +719,8 @@ GetAxis( ) const
 int cpExtensions::Visualization::ImageSliceActors::
 GetSliceNumber( ) const
 {
-  if( this->m_SliceMappers.size( ) > 0 )
-    return( this->m_SliceMappers[ 0 ]->GetSliceNumber( ) );
+  if( this->m_ImageMapper.GetPointer( ) != NULL )
+    return( this->m_ImageMapper->GetSliceNumber( ) );
   else
     return( -1 );
 }
@@ -814,8 +729,8 @@ GetSliceNumber( ) const
 int cpExtensions::Visualization::ImageSliceActors::
 GetSliceNumberMinValue( ) const
 {
-  if( this->m_SliceMappers.size( ) > 0 )
-    return( this->m_SliceMappers[ 0 ]->GetSliceNumberMinValue( ) );
+  if( this->m_ImageMapper.GetPointer( ) != NULL )
+    return( this->m_ImageMapper->GetSliceNumberMinValue( ) );
   else
     return( -1 );
 }
@@ -824,8 +739,8 @@ GetSliceNumberMinValue( ) const
 int cpExtensions::Visualization::ImageSliceActors::
 GetSliceNumberMaxValue( ) const
 {
-  if( this->m_SliceMappers.size( ) > 0 )
-    return( this->m_SliceMappers[ 0 ]->GetSliceNumberMaxValue( ) );
+  if( this->m_ImageMapper.GetPointer( ) != NULL )
+    return( this->m_ImageMapper->GetSliceNumberMaxValue( ) );
   else
     return( -1 );
 }
@@ -834,40 +749,52 @@ GetSliceNumberMaxValue( ) const
 void cpExtensions::Visualization::ImageSliceActors::
 SetSliceNumber( const int& slice )
 {
-  unsigned int nImages = this->m_SliceMappers.size( );
-  if( nImages == 0 )
+  if( this->m_ImageMapper.GetPointer( ) == NULL )
     return;
 
-  // Change visualization extent
-  for( unsigned int i = 0; i < nImages; ++i )
-  {
-    this->m_SliceMappers[ i ]->SetSliceNumber( slice );
-    this->m_SliceMappers[ i ]->Modified( );
-    this->m_ImageActors[ i ]->Modified( );
-    this->m_SliceMappers[ i ]->Update( );
-
-  } // rof
-
-  double bnds[ 6 ];
-  this->m_SliceMappers[ 0 ]->GetBounds( bnds );
+  int axis = this->GetAxis( );
+  double prev_pos = this->m_VisibleBounds[ axis << 1 ];
+
+  // Update mappers and display bounds
+  this->m_ImageMapper->SetSliceNumber( slice );
+  this->m_ImageMapper->Modified( );
+  this->m_ImageActor->Modified( );
+  this->m_ImageMapper->Update( );
+
+  // Update display extent (this isn't done automatically)
+  this->m_ImageMapper->GetInput( )->GetExtent( this->m_VisibleExtent );
+  this->m_VisibleExtent[ axis << 1 ] = slice;
+  this->m_VisibleExtent[ ( axis << 1 ) + 1 ] = slice;
+  this->m_ImageActor->SetDisplayExtent( this->m_VisibleExtent );
+
+  // Prepare plane data
+  this->m_ImageMapper->GetBounds( this->m_VisibleBounds );
   double x0[][ 3 ] =
-  {
-    { bnds[ 0 ], bnds[ 2 ], bnds[ 4 ] },
-    { bnds[ 1 ], bnds[ 3 ], bnds[ 5 ] }
-  };
+    {
+      {
+        this->m_VisibleBounds[ 0 ],
+        this->m_VisibleBounds[ 2 ],
+        this->m_VisibleBounds[ 4 ]
+      },
+      {
+        this->m_VisibleBounds[ 1 ],
+        this->m_VisibleBounds[ 3 ],
+        this->m_VisibleBounds[ 5 ]
+      }
+    };
   double p0[ 2 ][ 3 ];
 
-  vtkPlane* plane = this->m_SliceMappers[ 0 ]->GetSlicePlane( );
+  vtkPlane* plane = this->m_ImageMapper->GetSlicePlane( );
   plane->GeneralizedProjectPoint( x0[ 0 ], p0[ 0 ] );
   plane->GeneralizedProjectPoint( x0[ 1 ], p0[ 1 ] );
 
-  int axis = this->GetAxis( );
-  bnds[ 0 ] = p0[ 0 ][ 0 ];
-  bnds[ 1 ] = p0[ 1 ][ 0 ];
-  bnds[ 2 ] = p0[ 0 ][ 1 ];
-  bnds[ 3 ] = p0[ 1 ][ 1 ];
-  bnds[ 4 ] = p0[ 0 ][ 2 ];
-  bnds[ 5 ] = p0[ 1 ][ 2 ];
+  this->m_VisibleBounds[ 0 ] = p0[ 0 ][ 0 ];
+  this->m_VisibleBounds[ 1 ] = p0[ 1 ][ 0 ];
+  this->m_VisibleBounds[ 2 ] = p0[ 0 ][ 1 ];
+  this->m_VisibleBounds[ 3 ] = p0[ 1 ][ 1 ];
+  this->m_VisibleBounds[ 4 ] = p0[ 0 ][ 2 ];
+  this->m_VisibleBounds[ 5 ] = p0[ 1 ][ 2 ];
+  double* bnds = this->m_VisibleBounds;
 
   // Configure visualization and implicit plane orientation
   this->m_PlaneActor->GetProperty( )->SetRepresentationToWireframe( );
@@ -897,18 +824,49 @@ SetSliceNumber( const int& slice )
 
   // Update text
   this->UpdateText( );
+
+  // Update lines from associated slices
+  /* TODO
+     auto sIt = this->m_AssociatedSlices.begin( );
+     for( ; sIt != this->m_AssociatedSlices.end( ); ++sIt )
+     {
+     Self* slice = *sIt;
+     for( unsigned int id = 0; id < slice->m_AssociatedSlices.size( ); ++id )
+     {
+     std::cout << id << std::endl;
+     if( slice->m_AssociatedSlices[ id ] != this )
+     continue;
+
+     std::cout << "id : " << id << std::endl;
+
+     } // rof
+
+     } // rof
+  */
+
+  // Update camera position
+  if( this->m_Window == NULL )
+    return;
+  vtkRenderer* renderer =
+    this->m_Window->GetRenderers( )->GetFirstRenderer( );
+  if( renderer == NULL )
+    return;
+  vtkCamera* camera = renderer->GetActiveCamera( );
+  if( camera == NULL )
+    return;
+  double cam_pos[ 3 ];
+  camera->GetPosition( cam_pos );
+  cam_pos[ axis ] += this->m_VisibleBounds[ axis << 1 ] - prev_pos;
+  camera->SetPosition( cam_pos );
 }
 
 // -------------------------------------------------------------------------
 void cpExtensions::Visualization::ImageSliceActors::
 SetSlice( double* pos )
 {
-  vtkImageData* image;
-  if( this->m_ImageMaps[ 0 ] != NULL )
-    image =
-      dynamic_cast< vtkImageData* >( this->m_ImageMaps[ 0 ]->GetInput( ) );
-  else
-    image = this->m_SliceMappers[ 0 ]->GetInput( );
+  vtkImageData* image = this->GetInputImage( 0 );
+  if( image == NULL )
+    return;
 
   int ijk[ 3 ];
   double pcoords[ 3 ];
@@ -920,17 +878,17 @@ SetSlice( double* pos )
 void cpExtensions::Visualization::ImageSliceActors::
 UpdateText( )
 {
-  if( this->m_SliceMappers.size( ) > 0 )
+  if( this->m_ImageMapper.GetPointer( ) != NULL )
   {
     char axis;
-    int axId = this->m_SliceMappers[ 0 ]->GetOrientation( );
+    int axId = this->m_ImageMapper->GetOrientation( );
     if     ( axId == 0 ) axis = 'X';
     else if( axId == 1 ) axis = 'Y';
     else if( axId == 2 ) axis = 'Z';
 
     std::sprintf(
       this->m_TextBuffer, "Axis: %c (%d)",
-      axis, this->m_SliceMappers[ 0 ]->GetSliceNumber( )
+      axis, this->m_ImageMapper->GetSliceNumber( )
       );
   }
   else
@@ -944,22 +902,16 @@ UpdateText( )
 void cpExtensions::Visualization::ImageSliceActors::
 UpdateText( double pos[ 3 ] )
 {
-  if( this->m_SliceMappers.size( ) > 0 )
+  if( this->m_ImageMapper.GetPointer( ) != NULL )
   {
     char axis;
-    int axId = this->m_SliceMappers[ 0 ]->GetOrientation( );
+    int axId = this->m_ImageMapper->GetOrientation( );
     if     ( axId == 0 ) axis = 'X';
     else if( axId == 1 ) axis = 'Y';
     else if( axId == 2 ) axis = 'Z';
     int slice = this->GetSliceNumber( );
 
-    vtkImageData* image;
-    if( this->m_ImageMaps[ 0 ] != NULL )
-      image =
-        dynamic_cast< vtkImageData* >( this->m_ImageMaps[ 0 ]->GetInput( ) );
-    else
-      image = this->m_SliceMappers[ 0 ]->GetInput( );
-
+    vtkImageData* image = this->GetInputImage( 0 );
     int ijk[ 3 ];
     double pcoords[ 3 ];
     image->ComputeStructuredCoordinates( pos, ijk, pcoords );
@@ -1006,17 +958,17 @@ UpdateText( double pos[ 3 ] )
 void cpExtensions::Visualization::ImageSliceActors::
 UpdateText( const double& w, const double& l )
 {
-  if( this->m_SliceMappers.size( ) > 0 )
+  if( this->m_ImageMapper.GetPointer( ) != NULL )
   {
     char axis;
-    int axId = this->m_SliceMappers[ 0 ]->GetOrientation( );
+    int axId = this->m_ImageMapper->GetOrientation( );
     if     ( axId == 0 ) axis = 'X';
     else if( axId == 1 ) axis = 'Y';
     else if( axId == 2 ) axis = 'Z';
 
     std::sprintf(
       this->m_TextBuffer, "Axis: %c (%d)\nW/L (%.2f/%.2f)",
-      axis, this->m_SliceMappers[ 0 ]->GetSliceNumber( ), w, l
+      axis, this->m_ImageMapper->GetSliceNumber( ), w, l
       );
   }
   else
@@ -1050,7 +1002,7 @@ ResetCamera( )
   vtkRenderer* renderer =
     this->m_Window->GetRenderers( )->GetFirstRenderer( );
   if( renderer != NULL )
-    renderer->ResetCamera( );
+    renderer->ResetCamera( this->m_VisibleBounds );
 }
 
 // -------------------------------------------------------------------------
@@ -1084,74 +1036,6 @@ _ConfigureStyle( )
   this->m_Style->AddLeaveCommand( Self::_LeaveCommand, this );
 }
 
-// -------------------------------------------------------------------------
-void cpExtensions::Visualization::ImageSliceActors::
-_ConfigureNewLUT( vtkImageData* data )
-{
-  // Does the new LUT is a window-level one?
-  unsigned int nImgs = this->m_ImageMaps.size( );
-  unsigned int nCmps = data->GetNumberOfScalarComponents( );
-
-  if( nCmps > 1 )
-  {
-    this->m_ImageMaps.push_back( NULL );
-    return;
-
-  } // fi
-
-  // Create LUT filter
-  this->m_ImageMaps.push_back( vtkSmartPointer< vtkImageMapToColors >::New( ) );
-  if( nImgs == 0 )
-  {
-    double range[ 2 ];
-    data->GetScalarRange( range );
-    vtkSmartPointer< vtkWindowLevelLookupTable > lut =
-      vtkSmartPointer< vtkWindowLevelLookupTable >::New( );
-    lut->SetScaleToLinear( );
-    lut->SetTableRange( range );
-    lut->SetWindow( range[ 1 ] - range[ 0 ] );
-    lut->SetLevel( ( range[ 1 ] + range[ 0 ] ) / double( 2 ) );
-    lut->Build( );
-    this->m_ImageMaps[ 0 ]->SetLookupTable( lut );
-  }
-  else
-    this->SetLookupTableAsColor( nImgs, 1, 0, 0 );
-}
-
-// -------------------------------------------------------------------------
-void cpExtensions::Visualization::ImageSliceActors::
-_ConfigureNewInput( int axis )
-{
-  unsigned int nImages = this->m_ImageActors.size( );
-
-  // Configure mapper
-  vtkImageSliceMapper* mapper = this->m_SliceMappers[ nImages ];
-  if( nImages == 0 )
-    mapper->SetOrientation( axis );
-  else
-    mapper->SetOrientation( this->m_SliceMappers[ 0 ]->GetOrientation( ) );
-  mapper->Update( );
-
-  // Create actor
-  vtkSmartPointer< vtkImageActor > actor =
-    vtkSmartPointer< vtkImageActor >::New( );
-  this->m_ImageActors.push_back( actor );
-  actor->SetMapper( mapper );
-  actor->SetInterpolate( this->m_Interpolate );
-  actor->Modified( );
-
-  if( nImages == 0 )
-    this->m_Style->AssociateImageActor( actor );
-  this->AddItem( actor );
-
-  if( nImages > 1 )
-    this->SetSliceNumber( this->GetSliceNumber( ) );
-  else
-    this->SetSliceNumber( this->GetSliceNumberMaxValue( ) );
-  this->ResetCursor( );
-  this->Modified( );
-}
-
 // -------------------------------------------------------------------------
 void cpExtensions::Visualization::ImageSliceActors::
 _MouseMoveCommand(
@@ -1188,7 +1072,7 @@ _MouseMoveCommand(
     {
       // Change image window level
       double bounds[ 6 ];
-      actors->m_SliceMappers[ 0 ]->GetBounds( bounds );
+      actors->m_ImageMapper->GetBounds( bounds );
 
       int a0 = actors->GetAxis( );
       int a1 = ( a0 + 1 ) % 3;