#include <cstdlib>
#include <iostream>
#include <string>

#include <vtkImageActorPointPlacer.h>
#include <vtkPointHandleRepresentation3D.h>
#include <vtkProperty.h>
#include <vtkRenderer.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkSeedRepresentation.h>

#include <cpPlugins/Interface/Interface.h>
#include <cpPlugins/Interface/ProcessObject.h>
#include <cpPlugins/Interface/Image.h>

#include <cpExtensions/Visualization/ImageSliceActors.h>
#include <cpExtensions/Interaction/SeedWidget.h>

// -------------------------------------------------------------------------
typedef cpPlugins::Interface::Interface     TInterface;
typedef cpPlugins::Interface::ProcessObject TProcessObject;
typedef cpPlugins::Interface::DataObject    TDataObject;
typedef cpPlugins::Interface::Image         TImage;
typedef cpPlugins::Interface::Parameters    TParameters;
typedef TInterface::TClasses                TClasses;

typedef cpExtensions::Visualization::ImageSliceActors TSliceActors;
typedef cpExtensions::Interaction::SeedWidget         TSeedWidget;

// -------------------------------------------------------------------------
int main( int argc, char* argv[] )
{
  if( argc < 3 )
  {
    std::cerr
      << "Usage: " << argv[ 0 ]
      << " plugins_file input_image"
      << std::endl;
    return( 1 );

  } // fi

  // Create interface
  TInterface plugins;
  if( !plugins.Load( argv[ 1 ] ) )
  {
    std::cerr << "Failed to load plugins." << std::endl;
    return( 1 );

  } // fi

  // Create objects
  TProcessObject::Pointer reader;
  reader = plugins.CreateObject( "cpPlugins::IO::ImageReader" );
  if( reader.IsNull( ) )
  {
    std::cerr
      << "No suitable reader found in plugins." << std::endl
      << "Reader: " << reader.GetPointer( ) << std::endl
      << std::endl;
    return( 1 );

  } // fi

  // Configure reader
  TParameters* reader_params = reader->GetParameters( );
  for( int i = 2; i < argc; ++i )
    reader_params->AddToStringList( "FileNames", argv[ i ] );

  // Execute pipeline
  std::string err = reader->Update( );
  if( err != "" )
  {
    std::cerr << "ERROR: " << err << std::endl;
    return( 1 );

  } // fi
  TImage* image = reader->GetOutput< TImage >( "Output" );

  // Configure visualization objects
  vtkSmartPointer< vtkRenderer > renderer =
    vtkSmartPointer< vtkRenderer >::New( );
  renderer->SetBackground( 0.1, 0.3, 0.5 );

  vtkSmartPointer< vtkRenderWindow > window =
    vtkSmartPointer< vtkRenderWindow >::New( );
  window->AddRenderer( renderer );
  window->SetSize( 600, 600 );

  // Set up the interaction
  vtkSmartPointer< vtkRenderWindowInteractor > interactor =
    vtkSmartPointer< vtkRenderWindowInteractor >::New( );
  window->SetInteractor( interactor );

  // Create slice actors
  vtkSmartPointer< TSliceActors > image_actors =
    vtkSmartPointer< TSliceActors >::New( );
  image_actors->SetInputImage( image->GetVTK< vtkImageData >( ) );
  image_actors->SetAxis( 2 );
  image_actors->PushActorsInto( window );

  vtkSmartPointer< vtkImageActorPointPlacer > placer =
    vtkSmartPointer< vtkImageActorPointPlacer >::New( );
  placer->SetImageActor( image_actors->GetImageActor( ) );

  // Create the widget and its representation
  vtkSmartPointer< vtkPointHandleRepresentation3D > handle =
    vtkSmartPointer< vtkPointHandleRepresentation3D >::New( );
  handle->GetProperty( )->SetColor( 1, 0, 0 );
  handle->SetPointPlacer( placer );
  vtkSmartPointer< vtkSeedRepresentation > rep =
    vtkSmartPointer< vtkSeedRepresentation >::New( );
  rep->SetHandleRepresentation( handle );

  vtkSmartPointer< TSeedWidget > widget =
    vtkSmartPointer< TSeedWidget >::New( );
  widget->SetInteractor( interactor );
  widget->SetRepresentation( rep );

  // Begin interaction
  renderer->ResetCamera( );
  window->Render( );
  widget->On( );
  interactor->Start( );

  return( 0 );
}

// eof - $RCSfile$