lib/cpExtensions/Interaction/ImageInteractorStyle.cxx

   1 #include <cpExtensions/Interaction/ImageInteractorStyle.h>
   2
   3 #include <vtkImageActor.h>
   4 #include <vtkPropCollection.h>
   5 #include <vtkProperty.h>
   6 #include <vtkRenderWindowInteractor.h>
   7
   8 // -------------------------------------------------------------------------
   9 cpExtensions::Interaction::ImageInteractorStyle::TSeedWidget::
  10 TSeedWidget( vtkRenderWindowInteractor* interactor, vtkImageActor* actor )
  11 {
  12   this->Placer = vtkSmartPointer< vtkImageActorPointPlacer >::New( );
  13   this->Handle = vtkSmartPointer< vtkPointHandleRepresentation3D >::New( );
  14   this->Representation = vtkSmartPointer< vtkSeedRepresentation >::New( );
  15   this->Widget = vtkSmartPointer< SeedWidget >::New( );
  16
  17   this->Placer->SetImageActor( actor );
  18   this->Handle->GetProperty( )->SetColor( 1, 0, 0 );
  19   this->Handle->SetPointPlacer( this->Placer );
  20   this->Representation->SetHandleRepresentation( this->Handle );
  21   this->Widget->SetRepresentation( this->Representation );
  22   this->Widget->SetInteractor( interactor );
  23 }
  24
  25 // -------------------------------------------------------------------------
  26 void cpExtensions::Interaction::ImageInteractorStyle::TSeedWidget::
  27 On( )
  28 {
  29   this->Widget->On( );
  30 }
  31
  32 // -------------------------------------------------------------------------
  33 void cpExtensions::Interaction::ImageInteractorStyle::TSeedWidget::
  34 Off( )
  35 {
  36   this->Widget->Off( );
  37 }
  38
  39 // -------------------------------------------------------------------------
  40 cpExtensions::Interaction::ImageInteractorStyle::
  41 Self* cpExtensions::Interaction::ImageInteractorStyle::
  42 New( )
  43 {
  44   return( new Self );
  45 }
  46
  47 // -------------------------------------------------------------------------
  48 void cpExtensions::Interaction::ImageInteractorStyle::
  49 AssociateImageActor( vtkImageActor* actor )
  50 {
  51   if( actor != NULL )
  52   {
  53     this->m_PropPicker->AddPickList( actor );
  54     this->Modified( );
  55
  56   } // fi
  57 }
  58
  59 // -------------------------------------------------------------------------
  60 void cpExtensions::Interaction::ImageInteractorStyle::
  61 SeedWidgetOn( )
  62 {
  63   if( this->m_SeedWidget != NULL ) delete this->m_SeedWidget;
  64
  65   this->m_PropPicker->GetPickList( )->InitTraversal( );
  66   this->m_SeedWidget = new TSeedWidget(
  67     this->Interactor,
  68     dynamic_cast< vtkImageActor* >(
  69       this->m_PropPicker->GetPickList( )->GetNextProp( )
  70       )
  71     );
  72   this->m_SeedWidget->On( );
  73 }
  74
  75 // -------------------------------------------------------------------------
  76 void cpExtensions::Interaction::ImageInteractorStyle::
  77 SeedWidgetOff( )
  78 {
  79   if( this->m_SeedWidget != NULL )
  80   {
  81     this->m_SeedWidget->Off( );
  82     delete this->m_SeedWidget;
  83     this->m_SeedWidget = NULL;
  84
  85   } // fi
  86 }
  87
  88 // -------------------------------------------------------------------------
  89 cpExtensions::Interaction::ImageInteractorStyle::
  90 ImageInteractorStyle( )
  91   : Superclass( ),
  92     m_SeedWidget( NULL )
  93 {
  94   this->m_PropPicker = vtkSmartPointer< vtkPropPicker >::New( );
  95   this->m_PropPicker->PickFromListOn( );
  96 }
  97
  98 // -------------------------------------------------------------------------
  99 cpExtensions::Interaction::ImageInteractorStyle::
 100 ~ImageInteractorStyle( )
 101 {
 102   if( this->m_SeedWidget != NULL ) delete this->m_SeedWidget;
 103 }
 104
 105 // -------------------------------------------------------------------------
 106 bool cpExtensions::Interaction::ImageInteractorStyle::
 107 _PickPosition( int idx[ 2 ], double pos[ 3 ] )
 108 {
 109   vtkRenderWindowInteractor* rwi = this->GetInteractor( );
 110   if( rwi == NULL )
 111     return( false );
 112
 113   // Find the renderer where the event has been raised
 114   idx[ 0 ] = rwi->GetEventPosition( )[ 0 ];
 115   idx[ 1 ] = rwi->GetEventPosition( )[ 1 ];
 116   this->FindPokedRenderer( double( idx[ 0 ] ), double( idx[ 1 ] ) );
 117
 118   // Pick a 3D position
 119   int r = this->m_PropPicker->Pick(
 120     double( idx[ 0 ] ), double( idx[ 1 ] ), double( 0 ),
 121     this->CurrentRenderer
 122     );
 123   if( r == 0 )
 124     return( false );
 125   this->m_PropPicker->GetPickPosition( pos );
 126   return( true );
 127 }
 128
 129 // eof - $RCSfile$