]> Creatis software - cpPlugins.git/blobdiff - lib/cpExtensions/Visualization/ImageSliceActors.cxx
Widget integration (step 5/6): Just one step leftgit shortlog !
[cpPlugins.git] / lib / cpExtensions / Visualization / ImageSliceActors.cxx
index 5722c583d608b0159ebe9537e61ca5fcbcb84909..558fed75946f826b64e4d84f472022cf68a5ac0e 100644 (file)
@@ -1,8 +1,10 @@
 #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 <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*
@@ -23,23 +29,64 @@ New( )
 
 // -------------------------------------------------------------------------
 void cpExtensions::Visualization::ImageSliceActors::
-AddInputConnection( vtkAlgorithmOutput* aout, int axis )
+AddInputConnection( vtkAlgorithmOutput* aout, int axis, LUTType lut )
 {
+  vtkImageData* data = dynamic_cast< vtkImageData* >(
+    aout->GetProducer( )->GetOutputDataObject( aout->GetIndex( ) )
+    );
+  if( data == NULL )
+    return;
+
+  vtkImageMapToColors* new_map =
+    dynamic_cast< vtkImageMapToColors* >( aout->GetProducer( ) );
+  if( new_map == NULL )
+  {
+    // Configure LUT
+    this->_ConfigureNewLUT( data, lut );
+    new_map = *( this->ImageMaps.rbegin( ) );
+    if( new_map != NULL )
+    {
+      new_map->SetInputConnection( aout );
+      new_map->Update( );
+
+    } // fi
+  }
+  else
+    this->ImageMaps.push_back( new_map );
+  
+  // Create mapper and actors
   vtkSmartPointer< vtkImageSliceMapper > mapper =
     vtkSmartPointer< vtkImageSliceMapper >::New( );
+  if( new_map != NULL )
+    mapper->SetInputConnection( new_map->GetOutputPort( ) );
+  else
+    mapper->SetInputConnection( aout );
   this->SliceMappers.push_back( mapper );
-  mapper->SetInputConnection( aout );
   this->_ConfigureNewInput( axis );
 }
 
 // -------------------------------------------------------------------------
 void cpExtensions::Visualization::ImageSliceActors::
-AddInputData( vtkImageData* data, int axis )
+AddInputData( vtkImageData* data, int axis, LUTType lut )
 {
+  // Configure LUT
+  this->_ConfigureNewLUT( data, lut );
+  vtkImageMapToColors* new_map = *( this->ImageMaps.rbegin( ) );
+  if( new_map != 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( ) );
+  else
+    mapper->SetInputData( data );
   this->SliceMappers.push_back( mapper );
-  mapper->SetInputData( data );
   this->_ConfigureNewInput( axis );
 }
 
@@ -51,11 +98,16 @@ Clear( )
   this->RemoveAllItems( );
 
   // Delete all images
+  this->ImageMaps.clear( );
   this->SliceMappers.clear( );
   this->ImageActors.clear( );
+  this->AssociatedSlices.clear( );
   this->AssociatedActors.clear( );
 
   // Reconfigure unique objects
+  this->Cursor        = vtkSmartPointer< vtkPolyData >::New( );
+  this->CursorMapper  = vtkSmartPointer< vtkPolyDataMapper >::New( );
+  this->CursorActor   = vtkSmartPointer< vtkActor >::New( );
   this->PlaneFunction = vtkSmartPointer< vtkPlane >::New( );
   this->PlaneSource   = vtkSmartPointer< vtkPolyData >::New( );
   this->PlaneMapper   = vtkSmartPointer< vtkPolyDataMapper >::New( );
@@ -64,6 +116,35 @@ Clear( )
   this->TextBuffer[ 0 ] = '\0';
 
   // Unique objects configuration
+  vtkSmartPointer< vtkPoints > cursor_points =
+    vtkSmartPointer< vtkPoints >::New( );
+  vtkSmartPointer< vtkCellArray > cursor_lines =
+    vtkSmartPointer< vtkCellArray >::New( );
+  cursor_points->InsertNextPoint( 0, 0, 0 );
+  cursor_points->InsertNextPoint( 0, 0, 0 );
+  cursor_points->InsertNextPoint( 0, 0, 0 );
+  cursor_points->InsertNextPoint( 0, 0, 0 );
+  cursor_points->InsertNextPoint( 0, 0, 0 );
+  cursor_points->InsertNextPoint( 0, 0, 0 );
+  cursor_points->InsertNextPoint( 0, 0, 0 );
+  cursor_points->InsertNextPoint( 0, 0, 0 );
+  cursor_lines->InsertNextCell( 2 );
+  cursor_lines->InsertCellPoint( 0 );
+  cursor_lines->InsertCellPoint( 1 );
+  cursor_lines->InsertNextCell( 2 );
+  cursor_lines->InsertCellPoint( 2 );
+  cursor_lines->InsertCellPoint( 3 );
+  cursor_lines->InsertNextCell( 2 );
+  cursor_lines->InsertCellPoint( 4 );
+  cursor_lines->InsertCellPoint( 5 );
+  cursor_lines->InsertNextCell( 2 );
+  cursor_lines->InsertCellPoint( 6 );
+  cursor_lines->InsertCellPoint( 7 );
+  this->Cursor->SetPoints( cursor_points );
+  this->Cursor->SetLines( cursor_lines );
+  this->CursorMapper->SetInputData( this->Cursor );
+  this->CursorActor->SetMapper( this->CursorMapper );
+
   vtkSmartPointer< vtkPoints > plane_points =
     vtkSmartPointer< vtkPoints >::New( );
   vtkSmartPointer< vtkCellArray > plane_lines =
@@ -100,6 +181,23 @@ Clear( )
   coord->SetValue( 0.01, 0.01 );
 }
 
+// -------------------------------------------------------------------------
+void cpExtensions::Visualization::ImageSliceActors::
+AssociateSlice( Self* other )
+{
+  this->AssociatedSlices.push_back( other );
+  this->Modified( );
+}
+
+// -------------------------------------------------------------------------
+void cpExtensions::Visualization::ImageSliceActors::
+SetSlicesCommand( TCursorCommand cmd, void* data )
+{
+  this->SlicesCommand = cmd;
+  this->SlicesData = data;
+  this->Modified( );
+}
+
 // -------------------------------------------------------------------------
 vtkInteractorStyle* cpExtensions::Visualization::ImageSliceActors::
 GetStyle( )
@@ -116,26 +214,87 @@ GetStyle( ) const
 
 // -------------------------------------------------------------------------
 void cpExtensions::Visualization::ImageSliceActors::
-PushActorsInto( vtkRenderer* renderer )
+PushActorsInto( vtkRenderWindow* window, bool force_style )
 {
-  unsigned int N = this->GetNumberOfImageActors( );
-  for( unsigned int n = 0; n < N; ++n )
-    renderer->AddActor( this->GetImageActor( n ) );
-  renderer->AddActor( this->GetTextActor( ) );
-  renderer->AddActor( this->GetPlaneActor( ) );
-  renderer->Modified( );
+  vtkRenderWindowInteractor* rwi = window->GetInteractor( );
+  vtkRenderer* renderer = window->GetRenderers( )->GetFirstRenderer( );
+
+  // Update style
+  if( rwi != NULL && force_style )
+  {
+    if( rwi->GetInteractorStyle( ) != this->Style.GetPointer( ) )
+    {
+      rwi->SetInteractorStyle( this->Style );
+
+    } // fi
+
+  } // fi
+
+  if( renderer != NULL )
+  {
+    // Update actors
+    unsigned int N = this->GetNumberOfImageActors( );
+    for( unsigned int n = 0; n < N; ++n )
+      renderer->AddActor( this->GetImageActor( n ) );
+    renderer->AddActor( this->CursorActor );
+    renderer->AddActor( this->PlaneActor );
+    renderer->AddActor( this->TextActor );
+    renderer->Modified( );
+
+    // Configure camera
+    vtkCamera* camera = renderer->GetActiveCamera( );
+    if( camera == NULL )
+      return;
+
+    // Parallel projections are better when displaying 2D images
+    if( force_style )
+    {
+      int axis = this->GetAxis( );
+      camera->ParallelProjectionOn( );
+      camera->SetFocalPoint( double( 0 ), double( 0 ), double( 0 ) );
+      if( axis == 0 )
+      {
+        camera->SetPosition( double( 1 ), double( 0 ), double( 0 ) );
+        camera->SetViewUp  ( double( 0 ), double( 1 ), double( 0 ) );
+      }
+      else if( axis == 1 )
+      {
+        camera->SetPosition( double( 0 ), double( 1 ), double(  0 ) );
+        camera->SetViewUp  ( double( 0 ), double( 0 ), double( -1 ) );
+      }
+      else // if( axis == 2 )
+      {
+        camera->SetPosition( double( 0 ), double( 0 ), double( 1 ) );
+        camera->SetViewUp  ( double( 0 ), double( 1 ), double( 0 ) );
+
+      } // fi
+
+    } // fi
+    renderer->ResetCamera( );
+    rwi->Render( );
+
+  } // fi
 }
 
 // -------------------------------------------------------------------------
 void cpExtensions::Visualization::ImageSliceActors::
-PopActorsFrom( vtkRenderer* renderer )
+PopActorsFrom( vtkRenderWindow* window )
 {
-  unsigned int N = this->GetNumberOfImageActors( );
-  for( unsigned int n = 0; n < N; ++n )
-    renderer->RemoveActor( this->GetImageActor( n ) );
-  renderer->RemoveActor( this->GetTextActor( ) );
-  renderer->RemoveActor( this->GetPlaneActor( ) );
-  renderer->Modified( );
+  vtkRenderWindowInteractor* rwi = window->GetInteractor( );
+  vtkRenderer* renderer = window->GetRenderers( )->GetFirstRenderer( );
+
+  if( renderer != NULL )
+  {
+    // Update actors
+    unsigned int N = this->GetNumberOfImageActors( );
+    for( unsigned int n = 0; n < N; ++n )
+      renderer->RemoveActor( this->GetImageActor( n ) );
+    renderer->RemoveActor( this->CursorActor );
+    renderer->RemoveActor( this->PlaneActor );
+    renderer->RemoveActor( this->TextActor );
+    renderer->Modified( );
+
+  } // fi
 }
 
 // -------------------------------------------------------------------------
@@ -273,6 +432,201 @@ GetDisplayBounds( double bounds[ 6 ] ) const
     this->ImageActors[ 0 ]->GetDisplayBounds( bounds );
 }
 
+// -------------------------------------------------------------------------
+void cpExtensions::Visualization::ImageSliceActors::
+ResetCursor( )
+{
+  vtkPoints* points = this->Cursor->GetPoints( );
+  points->SetPoint( 0, 0, 0, 0 );
+  points->SetPoint( 1, 0, 0, 0 );
+  points->SetPoint( 2, 0, 0, 0 );
+  points->SetPoint( 3, 0, 0, 0 );
+  points->SetPoint( 4, 0, 0, 0 );
+  points->SetPoint( 5, 0, 0, 0 );
+  points->SetPoint( 6, 0, 0, 0 );
+  points->SetPoint( 7, 0, 0, 0 );
+  this->Cursor->Modified( );
+  this->CursorMapper->Modified( );
+  this->CursorActor->Modified( );
+}
+
+// -------------------------------------------------------------------------
+void cpExtensions::Visualization::ImageSliceActors::
+SetCursor( double pos[ 3 ] )
+{
+  if( this->SliceMappers.size( ) == 0 )
+    return;
+
+  // Get ordered axes
+  int a0 = this->GetAxis( );
+  int a1 = ( a0 + 1 ) % 3;
+  int a2 = ( a0 + 2 ) % 3;
+  int ma0 = a0 << 1;
+  int ma1 = a1 << 1;
+  int ma2 = a2 << 1;
+
+  double bounds[ 6 ];
+  this->SliceMappers[ 0 ]->GetInput( )->GetBounds( bounds );
+
+  double
+    p0[ 3 ], p1[ 3 ], p2[ 3 ], p3[ 3 ],
+    p4[ 3 ], p5[ 3 ], p6[ 3 ], p7[ 3 ];
+
+  p0[ a2 ] = p1[ a2 ] = p4[ a2 ] = p5[ a2 ] = pos[ a2 ];
+  p2[ a1 ] = p3[ a1 ] = p6[ a1 ] = p7[ a1 ] = pos[ a1 ];
+  p0[ a0 ] = p1[ a0 ] = p2[ a0 ] = p3[ a0 ] = bounds[ ma0 ];
+  p4[ a0 ] = p5[ a0 ] = p6[ a0 ] = p7[ a0 ] = bounds[ ma0 + 1 ];
+  p0[ a1 ] = p4[ a1 ] = bounds[ ma1 ];
+  p1[ a1 ] = p5[ a1 ] = bounds[ ma1 + 1 ];
+  p2[ a2 ] = p6[ a2 ] = bounds[ ma2 ];
+  p3[ a2 ] = p7[ a2 ] = bounds[ ma2 + 1 ];
+
+  vtkPoints* points = this->Cursor->GetPoints( );
+  points->SetPoint( 0, p0 );
+  points->SetPoint( 1, p1 );
+  points->SetPoint( 2, p2 );
+  points->SetPoint( 3, p3 );
+  points->SetPoint( 4, p4 );
+  points->SetPoint( 5, p5 );
+  points->SetPoint( 6, p6 );
+  points->SetPoint( 7, p7 );
+  this->Cursor->Modified( );
+  this->CursorMapper->Modified( );
+  this->CursorActor->Modified( );
+}
+
+// -------------------------------------------------------------------------
+vtkImageMapToColors* cpExtensions::Visualization::ImageSliceActors::
+GetImageMap( unsigned int id )
+{
+  if( id < this->ImageMaps.size( ) )
+    return( this->ImageMaps[ id ].GetPointer( ) );
+  else
+    return( NULL );
+}
+
+// -------------------------------------------------------------------------
+const vtkImageMapToColors* cpExtensions::Visualization::ImageSliceActors::
+GetImageMap( unsigned int id ) const
+{
+  if( id < this->ImageMaps.size( ) )
+    return( this->ImageMaps[ id ].GetPointer( ) );
+  else
+    return( NULL );
+}
+
+// -------------------------------------------------------------------------
+double cpExtensions::Visualization::ImageSliceActors::
+GetWindow( unsigned int id ) const
+{
+  if( this->ImageMaps[ id ].GetPointer( ) != NULL )
+  {
+    vtkWindowLevelLookupTable* lut =
+      dynamic_cast< vtkWindowLevelLookupTable* >(
+        this->ImageMaps[ id ]->GetLookupTable( )
+        );
+    if( lut != NULL )
+      return( lut->GetWindow( ) );
+    else
+      return( double( 0 ) );
+  }
+  else
+    return( double( 0 ) );
+}
+
+// -------------------------------------------------------------------------
+double cpExtensions::Visualization::ImageSliceActors::
+GetLevel( unsigned int id ) const
+{
+  if( this->ImageMaps[ id ].GetPointer( ) != NULL )
+  {
+    vtkWindowLevelLookupTable* lut =
+      dynamic_cast< vtkWindowLevelLookupTable* >(
+        this->ImageMaps[ id ]->GetLookupTable( )
+        );
+    if( lut != NULL )
+      return( lut->GetLevel( ) );
+    else
+      return( double( 0 ) );
+  }
+  else
+    return( double( 0 ) );
+}
+
+// -------------------------------------------------------------------------
+void cpExtensions::Visualization::ImageSliceActors::
+SetWindow( unsigned int id, double w )
+{
+  if( this->ImageMaps[ id ].GetPointer( ) != NULL )
+  {
+    vtkWindowLevelLookupTable* lut =
+      dynamic_cast< vtkWindowLevelLookupTable* >(
+        this->ImageMaps[ id ]->GetLookupTable( )
+        );
+    if( lut != NULL )
+    {
+      lut->SetWindow( w );
+      lut->Build( );
+      this->ImageMaps[ id ]->Modified( );
+      this->Modified( );
+
+    } // fi
+
+  } // fi
+}
+
+// -------------------------------------------------------------------------
+void cpExtensions::Visualization::ImageSliceActors::
+SetLevel( unsigned int id, double l )
+{
+  if( this->ImageMaps[ id ].GetPointer( ) != NULL )
+  {
+    vtkWindowLevelLookupTable* lut =
+      dynamic_cast< vtkWindowLevelLookupTable* >(
+        this->ImageMaps[ id ]->GetLookupTable( )
+        );
+    if( lut != NULL )
+    {
+      lut->SetLevel( l );
+      lut->Build( );
+      this->ImageMaps[ id ]->Modified( );
+      this->Modified( );
+
+    } // fi
+
+  } // fi
+}
+
+// -------------------------------------------------------------------------
+void cpExtensions::Visualization::ImageSliceActors::
+SetWindowLevel( unsigned int id, double w, double l )
+{
+  if( this->ImageMaps[ id ].GetPointer( ) != NULL )
+  {
+    vtkWindowLevelLookupTable* lut =
+      dynamic_cast< vtkWindowLevelLookupTable* >(
+        this->ImageMaps[ id ]->GetLookupTable( )
+        );
+    if( lut != NULL )
+    {
+      lut->SetWindow( w );
+      lut->SetLevel( l );
+      lut->Build( );
+      this->ImageMaps[ id ]->Modified( );
+      this->UpdateText( w, l );
+      this->Modified( );
+
+    } // fi
+
+  } // fi
+}
+
+// -------------------------------------------------------------------------
+void cpExtensions::Visualization::ImageSliceActors::
+ResetWindowLevel( unsigned int id )
+{
+}
+
 // -------------------------------------------------------------------------
 int cpExtensions::Visualization::ImageSliceActors::
 GetAxis( ) const
@@ -447,8 +801,38 @@ SetSliceNumber( const int& slice )
 
   // Update text
   this->UpdateText( );
+
+  // Associated slices
+  for( unsigned int i = 0; i < this->AssociatedSlices.size( ); ++i )
+    if( this->AssociatedSlices[ i ]->GetAxis( ) == this->GetAxis( ) )
+      this->AssociatedSlices[ i ]->SetSliceNumber( slice );
 }
 
+// -------------------------------------------------------------------------
+void cpExtensions::Visualization::ImageSliceActors::
+SetSlice( double* pos )
+{
+  vtkImageData* image;
+  if( this->ImageMaps[ 0 ] != NULL )
+    image =
+      dynamic_cast< vtkImageData* >( this->ImageMaps[ 0 ]->GetInput( ) );
+  else
+    image = this->SliceMappers[ 0 ]->GetInput( );
+
+  int ijk[ 3 ];
+  double pcoords[ 3 ];
+  image->ComputeStructuredCoordinates( pos, ijk, pcoords );
+  this->SetSliceNumber( ijk[ this->GetAxis( ) ] );
+}
+
+// -------------------------------------------------------------------------
+/* TODO
+   void cpExtensions::Visualization::ImageSliceActors::
+   SetSlices( double pos[ 3 ] )
+   {
+   }
+*/
+
 // -------------------------------------------------------------------------
 void cpExtensions::Visualization::ImageSliceActors::
 UpdateText( )
@@ -484,12 +868,27 @@ UpdateText( double pos[ 3 ] )
     if     ( axId == 0 ) axis = 'X';
     else if( axId == 1 ) axis = 'Y';
     else if( axId == 2 ) axis = 'Z';
+    int slice = this->GetSliceNumber( );
 
-    vtkImageData* image = this->SliceMappers[ 0 ]->GetInput( );
+    vtkImageData* image;
+    if( this->ImageMaps[ 0 ] != NULL )
+      image =
+        dynamic_cast< vtkImageData* >( this->ImageMaps[ 0 ]->GetInput( ) );
+    else
+      image = this->SliceMappers[ 0 ]->GetInput( );
 
     int ijk[ 3 ];
     double pcoords[ 3 ];
     image->ComputeStructuredCoordinates( pos, ijk, pcoords );
+    ijk[ axId ] = slice;
+
+    int ext[ 6 ];
+    image->GetExtent( ext );
+    if(
+      ext[ 0 ] <= ijk[ 0 ] && ijk[ 0 ] <= ext[ 1 ] &&
+      ext[ 2 ] <= ijk[ 1 ] && ijk[ 1 ] <= ext[ 3 ] &&
+      ext[ 4 ] <= ijk[ 2 ] && ijk[ 2 ] <= ext[ 5 ]
+      )
     {
       int nScl = image->GetNumberOfScalarComponents( );
       std::stringstream str;
@@ -498,9 +897,7 @@ UpdateText( double pos[ 3 ] )
         << "," << ijk[ 1 ]
         << "," << ijk[ 2 ] << "]=(";
       str <<
-        image->GetScalarComponentAsFloat(
-          ijk[ 0 ], ijk[ 1 ], ijk[ 2 ], 0
-          );
+        image->GetScalarComponentAsFloat( ijk[ 0 ], ijk[ 1 ], ijk[ 2 ], 0 );
       for( int n = 1; n < nScl; ++n )
         str
           << " "
@@ -510,9 +907,7 @@ UpdateText( double pos[ 3 ] )
       str << ")";
       std::sprintf(
         this->TextBuffer, "Axis: %c (%d) | Pixel %s",
-        axis,
-        this->SliceMappers[ 0 ]->GetSliceNumber( ),
-        str.str( ).c_str( )
+        axis, slice, str.str( ).c_str( )
         );
 
     } // fi
@@ -554,6 +949,10 @@ ImageSliceActors( )
   : Superclass( ),
     Interpolate( false )
 {
+  this->Clear( );
+
+  this->SlicesCommand = NULL;
+
   // Connect this view with a controller
   this->Style = vtkSmartPointer< ImageInteractorStyle >::New( );
   this->Style->AssociateView( this );
@@ -562,8 +961,6 @@ ImageSliceActors( )
   this->Style->SetMouseDoubleClickCommand( Self::_MouseDoubleClickCommand );
   this->Style->SetMouseWheelCommand( Self::_MouseWheelCommand );
   this->Style->SetKeyCommand( Self::_KeyCommand );
-
-  this->Clear( );
 }
 
 // -------------------------------------------------------------------------
@@ -572,6 +969,80 @@ cpExtensions::Visualization::ImageSliceActors::
 {
 }
 
+// -------------------------------------------------------------------------
+void cpExtensions::Visualization::ImageSliceActors::
+_ConfigureNewLUT( vtkImageData* data, LUTType lut_t )
+{
+  static const double _0 = double( 0 );
+  static const double _1 = double( 1 );
+  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 );
+
+  // Configure LUT
+  vtkSmartPointer< vtkImageMapToColors > new_map( NULL );
+  if( data->GetNumberOfScalarComponents( ) == 1 )
+  {
+    double range[ 2 ];
+    data->GetScalarRange( range );
+    if( lut_t == Self::LUTType_WindowLevel )
+    {
+      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( );
+
+      new_map = vtkSmartPointer< vtkImageMapToColors >::New( );
+      new_map->SetLookupTable( lut );
+    }
+    else if( lut_t == LUTType_Colors )
+    {
+      // Get HSV from display color
+      double r = 1, g = 0, b = 0;
+      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 *= _1 / _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( );
+
+      new_map = vtkSmartPointer< vtkImageMapToColors >::New( );
+      new_map->SetLookupTable( lut );
+
+    } // fi
+
+  } // fi
+  this->ImageMaps.push_back( new_map );
+}
+
 // -------------------------------------------------------------------------
 void cpExtensions::Visualization::ImageSliceActors::
 _ConfigureNewInput( int axis )
@@ -596,8 +1067,9 @@ _ConfigureNewInput( int axis )
 
   if( nImages == 0 )
   {
-    this->AddItem( this->TextActor );
+    this->AddItem( this->CursorActor );
     this->AddItem( this->PlaneActor );
+    this->AddItem( this->TextActor );
     this->Style->AssociateImageActor( actor );
 
   } // fi
@@ -626,12 +1098,37 @@ _MouseMoveCommand(
   }
   else if( btn == ImageInteractorStyle::ButtonID_Left )
   {
+    if( !alt && ctr && !sft && actors->SlicesCommand != NULL )
+      actors->SlicesCommand( pos, actors->GetAxis( ), actors->SlicesData );
   }
   else if( btn == ImageInteractorStyle::ButtonID_Middle )
   {
   }
   else if( btn == ImageInteractorStyle::ButtonID_Right )
   {
+    if( !alt && !ctr && sft )
+    {
+      double bounds[ 6 ];
+      actors->SliceMappers[ 0 ]->GetBounds( bounds );
+
+      int a0 = actors->GetAxis( );
+      int a1 = ( a0 + 1 ) % 3;
+      int a2 = ( a0 + 2 ) % 3;
+      double dx = pos[ a1 ] - actors->StartWindowLevelPos[ a1 ];
+      double dy = pos[ a2 ] - actors->StartWindowLevelPos[ a2 ];
+      dx /= bounds[ ( a1 << 1 ) + 1 ] - bounds[ a1 << 1 ];
+      dy /= bounds[ ( a2 << 1 ) + 1 ] - bounds[ a2 << 1 ];
+
+      dx *= actors->StartWindowLevel[ 0 ];
+      dy *= actors->StartWindowLevel[ 1 ];
+      actors->SetWindowLevel(
+        0,
+        actors->StartWindowLevel[ 0 ] + dx,
+        actors->StartWindowLevel[ 1 ] + dy
+        );
+
+    } // fi
+
   } // fi
 }
 
@@ -643,6 +1140,15 @@ _MouseClickCommand(
   bool alt, bool ctr, bool sft
   )
 {
+  ImageSliceActors* actors = reinterpret_cast< ImageSliceActors* >( data );
+  if( actors == NULL )
+    return;
+
+  actors->StartWindowLevelPos[ 0 ] = pos[ 0 ];
+  actors->StartWindowLevelPos[ 1 ] = pos[ 1 ];
+  actors->StartWindowLevelPos[ 2 ] = pos[ 2 ];
+  actors->StartWindowLevel[ 0 ] = actors->GetWindow( 0 );
+  actors->StartWindowLevel[ 1 ] = actors->GetLevel( 0 );
 }
 
 // -------------------------------------------------------------------------
@@ -653,6 +1159,23 @@ _MouseDoubleClickCommand(
   bool alt, bool ctr, bool sft
   )
 {
+  ImageSliceActors* actors = reinterpret_cast< ImageSliceActors* >( data );
+  if( actors == NULL )
+    return;
+
+  if( btn == ImageInteractorStyle::ButtonID_Left )
+  {
+    if( !alt && !ctr && !sft )
+      actors->SetCursor( pos );
+    else if( !alt && ctr && !sft && actors->SlicesCommand != NULL )
+      actors->SlicesCommand( pos, actors->GetAxis( ), actors->SlicesData );
+  }
+  else if( btn == ImageInteractorStyle::ButtonID_Middle )
+  {
+  }
+  else if( btn == ImageInteractorStyle::ButtonID_Right )
+  {
+  } // fi
 }
 
 // -------------------------------------------------------------------------
@@ -662,6 +1185,19 @@ _MouseWheelCommand(
   const int& dir, bool alt, bool ctr, bool sft
   )
 {
+  ImageSliceActors* actors = reinterpret_cast< ImageSliceActors* >( data );
+  if( actors == NULL )
+    return;
+
+  if( !alt && !ctr && !sft )
+  {
+    actors->SetSliceNumber( actors->GetSliceNumber( ) + dir );
+  }
+  else if( !alt && !ctr && sft )
+  {
+    actors->SetSliceNumber( actors->GetSliceNumber( ) + ( dir * 10 ) );
+
+  } // fi
 }
 
 // -------------------------------------------------------------------------