X-Git-Url: https://git.creatis.insa-lyon.fr/pubgit/?a=blobdiff_plain;ds=sidebyside;f=lib%2FcpExtensions%2FVisualization%2FMPRActors.cxx;h=a7803b2ad77864d2ed9ce81bd316a6d827ff1e10;hb=106a56bfe6a48067380089ffd61a518e40d77933;hp=54e689afab091f6f9317c2f3e708c223ce8f3687;hpb=be40532af01f0fe6b1cf9b6ecab37e4c4e9eaa51;p=cpPlugins.git

diff --git a/lib/cpExtensions/Visualization/MPRActors.cxx b/lib/cpExtensions/Visualization/MPRActors.cxx
index 54e689a..a7803b2 100644
--- a/lib/cpExtensions/Visualization/MPRActors.cxx
+++ b/lib/cpExtensions/Visualization/MPRActors.cxx
@@ -1,15 +1,12 @@
 #include <cpExtensions/Visualization/MPRActors.h>
 
-#include <cmath>
-
 #include <vtkAlgorithmOutput.h>
 #include <vtkImageData.h>
-#include <vtkInformation.h>
-#include <vtkLookupTable.h>
 #include <vtkOutlineSource.h>
 #include <vtkProperty.h>
 #include <vtkRenderer.h>
-#include <vtkWindowLevelLookupTable.h>
+#include <vtkRendererCollection.h>
+#include <vtkRenderWindow.h>
 
 // -------------------------------------------------------------------------
 cpExtensions::Visualization::MPRActors*
@@ -34,433 +31,151 @@ GetSliceActors( const int& i ) const
 int cpExtensions::Visualization::MPRActors::
 AddInputConnection( vtkAlgorithmOutput* aout )
 {
-  int N = this->ImageMaps.size( );
-  if( N == 0 )
+  ImageBlender* blender = this->Slices[ 0 ][ 0 ]->GetBlender( );
+  if( blender == NULL )
   {
-    this->ImageMaps.push_back(
-      vtkSmartPointer< vtkImageMapToColors >::New( )
-      );
-    this->ImageMaps[ 0 ]->SetInputConnection( aout );
-    this->SetLookupTableToWindowLevel( 0 );
-    this->_Update( 0 );
-    this->ResetWindowLevel( 0 );
-    return( 0 );
-  }
-  else
-  {
-    // Check if the image share the same space
-    vtkImageData* ref_image = this->_Image( 0 );
-    vtkImageData* new_image =
-      vtkImageData::SafeDownCast(
-        aout->GetProducer( )->GetOutputInformation( 0 )->
-        Get( vtkDataObject::DATA_OBJECT( ) )
-        );
-    int ref_ext[ 6 ], new_ext[ 6 ];
-    ref_image->GetExtent( ref_ext );
-    new_image->GetExtent( new_ext );
-    if(
-      ref_ext[ 0 ] == new_ext[ 0 ] && ref_ext[ 1 ] == new_ext[ 1 ] &&
-      ref_ext[ 2 ] == new_ext[ 2 ] && ref_ext[ 3 ] == new_ext[ 3 ] &&
-      ref_ext[ 4 ] == new_ext[ 4 ] && ref_ext[ 5 ] == new_ext[ 5 ]
-      )
+    this->Slices[ 0 ][ 0 ]->AddInputConnection( aout );
+    blender = this->Slices[ 0 ][ 0 ]->GetBlender( );
+    for( unsigned int i = 0; i < 2; ++i )
     {
-      this->ImageMaps.push_back(
-        vtkSmartPointer< vtkImageMapToColors >::New( )
-        );
-      this->ImageMaps[ N ]->SetInputConnection( aout );
-      this->SetLookupTableToColor(
-        N, double( 1 ), double( 0 ), double( 0 )
-        );
-      this->_Update( N );
-      return( N );
-    }
-    else
-      return( -1 );
+      for( unsigned int j = 0; j < 3; ++j )
+      {
+        if( i != 0 || j != 0 )
+          this->Slices[ i ][ j ]->SetBlender( blender );
+        this->Slices[ i ][ j ]->SetAxis( j );
 
-  } // fi
-}
+      } // rof
 
-// -------------------------------------------------------------------------
-int cpExtensions::Visualization::MPRActors::
-AddInputData( vtkImageData* image )
-{
-  int N = this->ImageMaps.size( );
-  if( N == 0 )
-  {
-    this->ImageMaps.push_back(
-      vtkSmartPointer< vtkImageMapToColors >::New( )
-      );
-    this->ImageMaps[ 0 ]->SetInputData( image );
-    this->SetLookupTableToWindowLevel( 0 );
-    this->_Update( 0 );
-    this->ResetWindowLevel( 0 );
-    return( 0 );
+    } // rof
+    this->_CreateBoundingBox( );
   }
   else
-  {
-    // Check if the image share the same space
-    vtkImageData* ref_image = this->_Image( 0 );
-    vtkImageData* new_image = image;
-    int ref_ext[ 6 ], new_ext[ 6 ];
-    ref_image->GetExtent( ref_ext );
-    new_image->GetExtent( new_ext );
-    if(
-      ref_ext[ 0 ] == new_ext[ 0 ] && ref_ext[ 1 ] == new_ext[ 1 ] &&
-      ref_ext[ 2 ] == new_ext[ 2 ] && ref_ext[ 3 ] == new_ext[ 3 ] &&
-      ref_ext[ 4 ] == new_ext[ 4 ] && ref_ext[ 5 ] == new_ext[ 5 ]
-      )
-    {
-      this->ImageMaps.push_back(
-        vtkSmartPointer< vtkImageMapToColors >::New( )
-        );
-      this->ImageMaps[ N ]->SetInputData( image );
-      this->SetLookupTableToColor(
-        N, double( 1 ), double( 0 ), double( 0 )
-        );
-      this->_Update( N );
-      return( N );
-    }
-    else
-      return( -1 );
-
-  } // fi
+    blender->AddInputConnection( aout );
+  return( blender->GetNumberOfImages( ) - 1 );
 }
 
 // -------------------------------------------------------------------------
-void cpExtensions::Visualization::MPRActors::
-PushDataInto( vtkRenderer* x, vtkRenderer* y, vtkRenderer* z, vtkRenderer* w )
-{
-  vtkRenderer* rends[] = { x, y, z };
-  for( int i = 0; i < 3; ++i )
-  {
-    if( rends[ i ] != NULL )
-    {
-      for(
-        unsigned int k = 0;
-        k < this->Slices[ 0 ][ i ]->GetNumberOfImageActors( );
-        ++k
-        )
-        rends[ i ]->AddActor( this->Slices[ 0 ][ i ]->GetImageActor( k ) );
-      rends[ i ]->AddActor( this->Slices[ 0 ][ i ]->GetTextActor( ) );
-      for( int j = 0; j < 3; ++j )
-        rends[ i ]->AddActor( this->Slices[ 0 ][ j ]->GetPlaneActor( ) );
-
-    } // fi
-    if( w != NULL )
-    {
-      for(
-        unsigned int k = 0;
-        k < this->Slices[ 1 ][ i ]->GetNumberOfImageActors( );
-        ++k
-        )
-        w->AddActor( this->Slices[ 1 ][ i ]->GetImageActor( k ) );
-      w->AddActor( this->Slices[ 1 ][ i ]->GetPlaneActor( ) );
-
-    } // fi
-
-  } // rof
-  if( w != NULL )
-    w->AddActor( this->ImageOutlineActor );
-}
-
-// -------------------------------------------------------------------------
-void cpExtensions::Visualization::MPRActors::
-PopDataFrom(
-  vtkRenderer* x,
-  vtkRenderer* y,
-  vtkRenderer* z,
-  vtkRenderer* w
-  )
+int cpExtensions::Visualization::MPRActors::
+AddInputData( vtkImageData* new_image )
 {
-  vtkRenderer* rends[] = { x, y, z };
-  for( int i = 0; i < 3; ++i )
+  ImageBlender* blender = this->Slices[ 0 ][ 0 ]->GetBlender( );
+  if( blender == NULL )
   {
-    if( rends[ i ] != NULL )
-    {
-      for(
-        unsigned int k = 0;
-        k < this->Slices[ 0 ][ i ]->GetNumberOfImageActors( );
-        ++k
-        )
-        rends[ i ]->RemoveActor( this->Slices[ 0 ][ i ]->GetImageActor( k ) );
-      rends[ i ]->RemoveActor( this->Slices[ 0 ][ i ]->GetTextActor( ) );
-      for( int j = 0; j < 3; ++j )
-        rends[ i ]->RemoveActor( this->Slices[ 0 ][ j ]->GetPlaneActor( ) );
-
-    } // fi
-    if( w != NULL )
+    this->Slices[ 0 ][ 0 ]->AddInputData( new_image );
+    blender = this->Slices[ 0 ][ 0 ]->GetBlender( );
+    for( unsigned int i = 0; i < 2; ++i )
     {
-      for(
-        unsigned int k = 0;
-        k < this->Slices[ 1 ][ i ]->GetNumberOfImageActors( );
-        ++k
-        )
-        w->RemoveActor( this->Slices[ 1 ][ i ]->GetImageActor( k ) );
-      w->RemoveActor( this->Slices[ 1 ][ i ]->GetPlaneActor( ) );
-
-    } // fi
-
-  } // rof
-  if( w != NULL )
-    w->RemoveActor( this->ImageOutlineActor );
-}
-
-// -------------------------------------------------------------------------
-void cpExtensions::Visualization::MPRActors::
-LinkInteractors( )
-{
-  this->_Update( 0 );
-  this->_Update( 1 );
-  this->_Update( 2 );
-}
-
-// -------------------------------------------------------------------------
-void cpExtensions::Visualization::MPRActors::
-SetLookupTable( unsigned int i, vtkScalarsToColors* lut )
-{
-  if( i < this->ImageMaps.size( ) )
-  {
-    this->ImageMaps[ i ]->SetLookupTable( lut );
-    this->ImageMaps[ i ]->Update( );
-    this->Modified( );
-
-  } // fi
-}
-
-// -------------------------------------------------------------------------
-vtkScalarsToColors* cpExtensions::Visualization::MPRActors::
-GetLookupTable( unsigned int i ) const
-{
-  if( i < this->ImageMaps.size( ) )
-    return( this->ImageMaps[ i ]->GetLookupTable( ) );
-  else
-    return( NULL );
-}
-
-// -------------------------------------------------------------------------
-void cpExtensions::Visualization::MPRActors::
-SetLookupTableToWindowLevel( unsigned int i )
-{
-  // Check if the input has been configured
-  vtkImageData* image = this->_Image( i );
-  if( image == NULL )
-    return;
-
-  double r[ 2 ];
-  image->GetScalarRange( r );
-
-  vtkSmartPointer< vtkWindowLevelLookupTable > lut =
-    vtkSmartPointer< vtkWindowLevelLookupTable >::New( );
-  lut->SetScaleToLinear( );
-  lut->SetTableRange( r );
-  lut->Build( );
-
-  this->SetLookupTable( i, lut );
-}
-
-// -------------------------------------------------------------------------
-double cpExtensions::Visualization::MPRActors::
-GetMinWindow( unsigned int i ) const
-{
-  return( 0 );
-}
-
-// -------------------------------------------------------------------------
-double cpExtensions::Visualization::MPRActors::
-GetMaxWindow( unsigned int i ) const
-{
-  // Check if the input has been configured
-  vtkImageData* image = this->_Image( i );
-  if( image == NULL )
-    return( double( 0 ) );
-
-  double r[ 2 ];
-  image->GetScalarRange( r );
-  return( r[ 1 ] - r[ 0 ] );
-}
-
-// -------------------------------------------------------------------------
-double cpExtensions::Visualization::MPRActors::
-GetMinLevel( unsigned int i ) const
-{
-  // Check if the input has been configured
-  vtkImageData* image = this->_Image( i );
-  if( image == NULL )
-    return( double( 0 ) );
-
-  double r[ 2 ];
-  image->GetScalarRange( r );
-  return( r[ 0 ] );
-}
-
-// -------------------------------------------------------------------------
-double cpExtensions::Visualization::MPRActors::
-GetMaxLevel( unsigned int i ) const
-{
-  // Check if the input has been configured
-  vtkImageData* image = this->_Image( i );
-  if( image == NULL )
-    return( double( 0 ) );
+      for( unsigned int j = 0; j < 3; ++j )
+      {
+        if( i != 0 || j != 0 )
+          this->Slices[ i ][ j ]->SetBlender( blender );
+        this->Slices[ i ][ j ]->SetAxis( j );
 
-  double r[ 2 ];
-  image->GetScalarRange( r );
-  return( r[ 1 ] );
-}
+      } // rof
 
-// -------------------------------------------------------------------------
-double cpExtensions::Visualization::MPRActors::
-GetWindow( unsigned int i ) const
-{
-  vtkWindowLevelLookupTable* lut =
-    dynamic_cast< vtkWindowLevelLookupTable* >( this->GetLookupTable( i ) );
-  if( lut != NULL )
-    return( lut->GetWindow( ) );
+    } // rof
+    this->_CreateBoundingBox( );
+  }
   else
-    return( double( 0 ) );
+    blender->AddInputData( new_image );
+  return( blender->GetNumberOfImages( ) - 1 );
 }
 
 // -------------------------------------------------------------------------
-double cpExtensions::Visualization::MPRActors::
-GetLevel( unsigned int i ) const
+unsigned int cpExtensions::Visualization::MPRActors::
+GetNumberOfImages( ) const
 {
-  vtkWindowLevelLookupTable* lut =
-    dynamic_cast< vtkWindowLevelLookupTable* >( this->GetLookupTable( i ) );
-  if( lut != NULL )
-    return( lut->GetLevel( ) );
+  ImageBlender* blender = this->Slices[ 0 ][ 0 ]->GetBlender( );
+  if( blender != NULL )
+    return( blender->GetNumberOfImages( ) );
   else
-    return( double( 0 ) );
+    return( 0 );
 }
 
 // -------------------------------------------------------------------------
 void cpExtensions::Visualization::MPRActors::
-SetWindow( unsigned int i, const double& w )
+PushActorsInto(
+  vtkRenderWindow* x, vtkRenderWindow* y, vtkRenderWindow* z,
+  vtkRenderWindow* w
+  )
 {
-  vtkWindowLevelLookupTable* lut =
-    dynamic_cast< vtkWindowLevelLookupTable* >( this->GetLookupTable( i ) );
-  if( lut != NULL )
+  this->Slices[ 0 ][ 0 ]->PushActorsInto( x, true );
+  this->Slices[ 0 ][ 1 ]->PushActorsInto( y, true );
+  this->Slices[ 0 ][ 2 ]->PushActorsInto( z, true );
+  this->Slices[ 1 ][ 0 ]->PushActorsInto( w, false );
+  this->Slices[ 1 ][ 1 ]->PushActorsInto( w, false );
+  this->Slices[ 1 ][ 2 ]->PushActorsInto( w, false );
+
+  vtkRenderer* xren =
+    ( x != NULL )? x->GetRenderers( )->GetFirstRenderer( ): NULL;
+  vtkRenderer* yren =
+    ( y != NULL )? y->GetRenderers( )->GetFirstRenderer( ): NULL;
+  vtkRenderer* zren =
+    ( z != NULL )? z->GetRenderers( )->GetFirstRenderer( ): NULL;
+  vtkRenderer* wren =
+    ( w != NULL )? w->GetRenderers( )->GetFirstRenderer( ): NULL;
+
+  if( xren != NULL )
   {
-    lut->SetWindow( w );
-    lut->Build( );
-    this->ImageMaps[ i ]->Modified( );
-    this->Modified( );
+    xren->AddActor( this->Slices[ 0 ][ 1 ]->GetPlaneActor( ) );
+    xren->AddActor( this->Slices[ 0 ][ 2 ]->GetPlaneActor( ) );
 
   } // fi
-}
+  if( yren != NULL )
+  {
+    yren->AddActor( this->Slices[ 0 ][ 0 ]->GetPlaneActor( ) );
+    yren->AddActor( this->Slices[ 0 ][ 2 ]->GetPlaneActor( ) );
 
-// -------------------------------------------------------------------------
-void cpExtensions::Visualization::MPRActors::
-SetLevel( unsigned int i, const double& l )
-{
-  vtkWindowLevelLookupTable* lut =
-    dynamic_cast< vtkWindowLevelLookupTable* >( this->GetLookupTable( i ) );
-  if( lut != NULL )
+  } // fi
+  if( zren != NULL )
   {
-    lut->SetLevel( l );
-    lut->Build( );
-    this->ImageMaps[ i ]->Modified( );
-    this->Modified( );
+    zren->AddActor( this->Slices[ 0 ][ 0 ]->GetPlaneActor( ) );
+    zren->AddActor( this->Slices[ 0 ][ 1 ]->GetPlaneActor( ) );
 
   } // fi
+  if( wren != NULL )
+    wren->AddActor( this->ImageOutlineActor );
 }
 
 // -------------------------------------------------------------------------
 void cpExtensions::Visualization::MPRActors::
-SetWindowLevel( unsigned int i, const double& w, const double& l )
+PopActorsFrom(
+  vtkRenderWindow* x, vtkRenderWindow* y, vtkRenderWindow* z,
+  vtkRenderWindow* w
+  )
 {
-  vtkWindowLevelLookupTable* lut =
-    dynamic_cast< vtkWindowLevelLookupTable* >( this->GetLookupTable( i ) );
-  if( lut != NULL )
-  {
-    lut->SetWindow( w );
-    lut->SetLevel( l );
-    lut->Build( );
-    this->ImageMaps[ i ]->Modified( );
-
-    for( unsigned int j = 0; j < 3; ++j )
-      this->Slices[ 0 ][ j ]->UpdateText( w, l );
-
-    this->Modified( );
-
-  } // fi
+  this->Slices[ 0 ][ 0 ]->PopActorsFrom( x );
+  this->Slices[ 0 ][ 1 ]->PopActorsFrom( y );
+  this->Slices[ 0 ][ 2 ]->PopActorsFrom( z );
+  this->Slices[ 1 ][ 0 ]->PopActorsFrom( w );
+  this->Slices[ 1 ][ 1 ]->PopActorsFrom( w );
+  this->Slices[ 1 ][ 2 ]->PopActorsFrom( w );
+
+  vtkRenderer* wren =
+    ( w != NULL )? w->GetRenderers( )->GetFirstRenderer( ): NULL;
+  if( wren != NULL )
+    wren->RemoveActor( this->ImageOutlineActor );
+
+  this->Slices[ 0 ][ 0 ]->Clear( );
+  this->Slices[ 0 ][ 1 ]->Clear( );
+  this->Slices[ 0 ][ 2 ]->Clear( );
+  this->Slices[ 1 ][ 0 ]->Clear( );
+  this->Slices[ 1 ][ 1 ]->Clear( );
+  this->Slices[ 1 ][ 2 ]->Clear( );
 }
 
 // -------------------------------------------------------------------------
-void cpExtensions::Visualization::MPRActors::
-ResetWindowLevel( unsigned int i )
+double cpExtensions::Visualization::MPRActors::
+GetWindow( )
 {
-  vtkImageData* image = this->_Image( i );
-  vtkWindowLevelLookupTable* lut =
-    dynamic_cast< vtkWindowLevelLookupTable* >( this->GetLookupTable( i ) );
-  if( image != NULL && lut != NULL )
-  {
-    double r[ 2 ];
-    image->GetScalarRange( r );
-    lut->SetTableRange( r );
-    lut->SetWindow( r[ 1 ] - r[ 0 ] );
-    lut->SetLevel( ( r[ 1 ] + r[ 0 ] ) / double( 2 ) );
-    lut->Build( );
-    this->ImageMaps[ i ]->Modified( );
-    this->Modified( );
-
-  } // fi
+  return( this->Slices[ 0 ][ 0 ]->GetWindow( ) );
 }
 
 // -------------------------------------------------------------------------
-void cpExtensions::Visualization::MPRActors::
-SetLookupTableToColor(
-  unsigned int i, const double& r, const double& g, const double& b
-  )
+double cpExtensions::Visualization::MPRActors::
+GetLevel( )
 {
-  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 );
-
-  // Check if the input has been configured
-  vtkImageData* image = this->_Image( i );
-  if( image == NULL )
-    return;
-
-  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 *= _1 / _6;
-    
-  } // fi
-
-  // Define new lookup table
-  vtkSmartPointer< vtkLookupTable > lut =
-    vtkSmartPointer< vtkLookupTable >::New( );
-  lut->SetScaleToLinear( );
-  lut->SetAboveRangeColor( _0, _0, _0, _0 );
-  lut->SetBelowRangeColor( _0, _0, _0, _0 );
-  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( i, lut );
+  return( this->Slices[ 0 ][ 0 ]->GetLevel( ) );
 }
 
 // -------------------------------------------------------------------------
@@ -488,7 +203,11 @@ GetSlice( const int& axis ) const
 void cpExtensions::Visualization::MPRActors::
 SetSlice( const int& axis, const int& slice )
 {
-  vtkImageData* image = this->_Image( 0 );
+  ImageBlender* blender = this->Slices[ 0 ][ 0 ]->GetBlender( );
+  if( blender == NULL )
+    return;
+  vtkImageData* image =
+    dynamic_cast< vtkImageData* >( blender->GetInput( ) );
   if( image == NULL )
     return;
 
@@ -513,7 +232,11 @@ SetSlice( const int& axis, const int& slice )
 void cpExtensions::Visualization::MPRActors::
 SetSlice( const int& axis, const double& slice )
 {
-  vtkImageData* image = this->_Image( 0 );
+  ImageBlender* blender = this->Slices[ 0 ][ 0 ]->GetBlender( );
+  if( blender == NULL )
+    return;
+  vtkImageData* image =
+    dynamic_cast< vtkImageData* >( blender->GetInput( ) );
   if( image == NULL )
     return;
 
@@ -546,6 +269,22 @@ MPRActors( )
   for( unsigned int i = 0; i < 2; ++i )
     for( unsigned int j = 0; j < 3; ++j )
       this->Slices[ i ][ j ] = vtkSmartPointer< ImageSliceActors >::New( );
+
+  this->Slices[ 0 ][ 0 ]->AssociateSlice( this->Slices[ 1 ][ 0 ] );
+  this->Slices[ 0 ][ 1 ]->AssociateSlice( this->Slices[ 1 ][ 1 ] );
+  this->Slices[ 0 ][ 2 ]->AssociateSlice( this->Slices[ 1 ][ 2 ] );
+
+  for( unsigned int i = 0; i < 3; ++ i )
+  {
+    this->Slices[ 0 ][ i ]->AddRenderCommand(
+      Self::_RenderCommand, this
+      );
+    this->Slices[ 0 ][ i ]->AddWindowLevelCommand(
+      Self::_WindowLevelCommand, this
+      );
+    this->Slices[ 0 ][ i ]->AddSlicesCommand( Self::_SlicesCommand, this );
+
+  } // rof
 }
 
 // -------------------------------------------------------------------------
@@ -554,59 +293,18 @@ cpExtensions::Visualization::MPRActors::
 {
 }
 
-// -------------------------------------------------------------------------
-vtkImageData* cpExtensions::Visualization::MPRActors::
-_Image( unsigned int i ) const
-{
-  if( i < this->ImageMaps.size( ) )
-  {
-    vtkAlgorithm* algo = this->ImageMaps[ i ]->GetInputAlgorithm( );
-    vtkInformation* info = algo->GetOutputInformation( 0 );
-    return(
-      vtkImageData::SafeDownCast(
-        info->Get( vtkDataObject::DATA_OBJECT( ) )
-        )
-      );
-  }
-  else
-    return( NULL );
-}
-
 // -------------------------------------------------------------------------
 void cpExtensions::Visualization::MPRActors::
-_Update( unsigned int i )
+_CreateBoundingBox( )
 {
-  // Check if the input has been configured
-  vtkImageData* image = this->_Image( i );
-  if( image == NULL )
+  ImageBlender* blender = this->Slices[ 0 ][ 0 ]->GetBlender( );
+  if( blender == NULL )
     return;
-  this->ImageMaps[ i ]->Update( );
-
-  for( int j = 0; j < 2; ++j )
+  if( blender->GetNumberOfImages( ) == 1 )
   {
-    for( int k = 0; k < 3; ++k )
-    {
-      this->Slices[ j ][ k ]->AddInputConnection(
-        this->ImageMaps[ i ]->GetOutputPort( ), k
-        );
-      this->Slices[ j ][ k ]->UpdateText( );
-
-      // Add all of slice's props
-      this->Slices[ j ][ k ]->InitTraversal( );
-      vtkProp* prop = this->Slices[ j ][ k ]->GetNextProp( );
-      while( prop != NULL )
-      {
-        this->AddItem( prop );
-        prop = this->Slices[ j ][ k ]->GetNextProp( );
+    vtkImageData* image =
+      dynamic_cast< vtkImageData* >( blender->GetInput( ) );
 
-      } // elihw
-
-    } // rof
-
-  } // rof
-
-  if( i == 0 )
-  {
     // Create 3D outline
     double bb[ 6 ];
     image->GetBounds( bb );
@@ -627,4 +325,55 @@ _Update( unsigned int i )
   } // fi
 }
 
+// -------------------------------------------------------------------------
+void cpExtensions::Visualization::MPRActors::
+_SlicesCommand( double* pos, int axis, void* data )
+{
+  MPRActors* actors = reinterpret_cast< MPRActors* >( data );
+  if( actors == NULL )
+    return;
+  for( unsigned int j = 0; j < 3; ++j )
+  {
+    if( actors->Slices[ 0 ][ j ]->GetAxis( ) != axis )
+    {
+      actors->Slices[ 0 ][ j ]->SetSlice( pos );
+      actors->Slices[ 1 ][ j ]->SetSlice( pos );
+      actors->Slices[ 0 ][ j ]->Render( 1e-3 );
+      actors->Slices[ 1 ][ j ]->Render( 1e-3 );
+
+    } // fi
+
+  } // rof
+}
+
+// -------------------------------------------------------------------------
+void cpExtensions::Visualization::MPRActors::
+_WindowLevelCommand( double window, double level, void* data )
+{
+  MPRActors* actors = reinterpret_cast< MPRActors* >( data );
+  if( actors == NULL )
+    return;
+  actors->Slices[ 0 ][ 0 ]->Render( 1e-3 );
+  actors->Slices[ 0 ][ 1 ]->Render( 1e-3 );
+  actors->Slices[ 0 ][ 2 ]->Render( 1e-3 );
+  actors->Slices[ 1 ][ 0 ]->Render( 1e-3 );
+  actors->Slices[ 1 ][ 1 ]->Render( 1e-3 );
+  actors->Slices[ 1 ][ 2 ]->Render( 1e-3 );
+}
+
+// -------------------------------------------------------------------------
+void cpExtensions::Visualization::MPRActors::
+_RenderCommand( void* data )
+{
+  MPRActors* actors = reinterpret_cast< MPRActors* >( data );
+  if( actors == NULL )
+    return;
+  actors->Slices[ 0 ][ 0 ]->Render( 1e-3 );
+  actors->Slices[ 0 ][ 1 ]->Render( 1e-3 );
+  actors->Slices[ 0 ][ 2 ]->Render( 1e-3 );
+  actors->Slices[ 1 ][ 0 ]->Render( 1e-3 );
+  actors->Slices[ 1 ][ 1 ]->Render( 1e-3 );
+  actors->Slices[ 1 ][ 2 ]->Render( 1e-3 );
+}
+
 // eof - $RCSfile$