appli/examples/example_HandleWidget.cxx

   1 #include <cstdlib>
   2 #include <iostream>
   3 #include <string>
   4
   5 #include <vtkHandleWidget.h>
   6 #include <vtkImageActorPointPlacer.h>
   7 #include <vtkPointHandleRepresentation3D.h>
   8 #include <vtkProperty.h>
   9 #include <vtkRenderer.h>
  10 #include <vtkRenderWindow.h>
  11 #include <vtkRenderWindowInteractor.h>
  12
  13 #include <cpPlugins/Interface/Interface.h>
  14 #include <cpPlugins/Interface/ProcessObject.h>
  15 #include <cpPlugins/Interface/Image.h>
  16
  17 #include <cpExtensions/Visualization/ImageSliceActors.h>
  18
  19 // -------------------------------------------------------------------------
  20 typedef cpPlugins::Interface::Interface     TInterface;
  21 typedef cpPlugins::Interface::ProcessObject TProcessObject;
  22 typedef cpPlugins::Interface::DataObject    TDataObject;
  23 typedef cpPlugins::Interface::Image         TImage;
  24 typedef cpPlugins::Interface::Parameters    TParameters;
  25 typedef TInterface::TClasses                TClasses;
  26
  27 typedef cpExtensions::Visualization::ImageSliceActors TSliceActors;
  28
  29 // -------------------------------------------------------------------------
  30 int main( int argc, char* argv[] )
  31 {
  32   if( argc < 3 )
  33   {
  34     std::cerr
  35       << "Usage: " << argv[ 0 ]
  36       << " plugins_file input_image"
  37       << std::endl;
  38     return( 1 );
  39
  40   } // fi
  41
  42   // Create interface
  43   TInterface plugins;
  44   if( !plugins.Load( argv[ 1 ] ) )
  45   {
  46     std::cerr << "Failed to load plugins." << std::endl;
  47     return( 1 );
  48
  49   } // fi
  50
  51   // Create objects
  52   TProcessObject::Pointer reader =
  53     plugins.CreateObject( "cpPlugins::IO::ImageReader" );
  54   if( reader.IsNull( ) )
  55   {
  56     std::cerr
  57       << "No suitable reader found in plugins." << std::endl
  58       << "Reader: " << reader.GetPointer( ) << std::endl
  59       << std::endl;
  60     return( 1 );
  61
  62   } // fi
  63
  64   // Configure reader
  65   TParameters* reader_params = reader->GetParameters( );
  66   for( int i = 2; i < argc; ++i )
  67     reader_params->AddToStringList( "FileNames", argv[ i ] );
  68
  69   // Execute pipeline
  70   std::string err = reader->Update( );
  71   if( err != "" )
  72   {
  73     std::cerr << "ERROR: " << err << std::endl;
  74     return( 1 );
  75
  76   } // fi
  77   TImage* image = reader->GetOutput< TImage >( "Output" );
  78
  79   // Configure visualization objects
  80   vtkSmartPointer< vtkRenderer > renderer =
  81     vtkSmartPointer< vtkRenderer >::New( );
  82   renderer->SetBackground( 0.1, 0.3, 0.5 );
  83
  84   vtkSmartPointer< vtkRenderWindow > window =
  85     vtkSmartPointer< vtkRenderWindow >::New( );
  86   window->AddRenderer( renderer );
  87   window->SetSize( 600, 600 );
  88
  89   // Set up the interaction
  90   vtkSmartPointer< vtkRenderWindowInteractor > interactor =
  91     vtkSmartPointer< vtkRenderWindowInteractor >::New( );
  92   window->SetInteractor( interactor );
  93
  94   // Create slice actors
  95   vtkSmartPointer< TSliceActors > image_actors =
  96     vtkSmartPointer< TSliceActors >::New( );
  97   image_actors->SetInputImage( image->GetVTK< vtkImageData >( ) );
  98   image_actors->SetAxis( 2 );
  99   image_actors->PushActorsInto( window );
 100
 101   vtkSmartPointer< vtkImageActorPointPlacer > placer =
 102     vtkSmartPointer< vtkImageActorPointPlacer >::New( );
 103   placer->SetImageActor( image_actors->GetImageActor( ) );
 104
 105   double bnds[ 6 ];
 106   image_actors->GetImageActor( )->GetDisplayBounds( bnds );
 107   double pos[] = { bnds[ 0 ], bnds[ 2 ], bnds[ 4 ] };
 108
 109   vtkSmartPointer< vtkPointHandleRepresentation3D > rep =
 110     vtkSmartPointer< vtkPointHandleRepresentation3D >::New( );
 111   rep->SetWorldPosition( pos );
 112   rep->GetProperty( )->SetColor( 1, 0, 0 );
 113   rep->ActiveRepresentationOff( );
 114   rep->SetPointPlacer( placer );
 115
 116   vtkSmartPointer< vtkHandleWidget > handleWidget =
 117     vtkSmartPointer< vtkHandleWidget >::New( );
 118   handleWidget->SetInteractor( interactor );
 119   handleWidget->SetRepresentation( rep );
 120
 121   // Begin interaction
 122   interactor->Initialize( );
 123   renderer->ResetCamera( );
 124   window->Render( );
 125   handleWidget->On( );
 126   interactor->Start( );
 127
 128   return( 0 );
 129 }
 130
 131 // eof - $RCSfile$