lib/cpExtensions/Visualization/ImageInteractorStyle.cxx

   1 #include <cpExtensions/Visualization/ImageInteractorStyle.h>
   2
   3 #include <vtkImageActor.h>
   4 #include <vtkRenderWindowInteractor.h>
   5
   6 // -------------------------------------------------------------------------
   7 cpExtensions::Visualization::ImageInteractorStyle::
   8 Self* cpExtensions::Visualization::ImageInteractorStyle::
   9 New( )
  10 {
  11   return( new Self );
  12 }
  13
  14 // -------------------------------------------------------------------------
  15 void cpExtensions::Visualization::ImageInteractorStyle::
  16 AssociateImageActor( vtkImageActor* actor )
  17 {
  18   if( actor != NULL )
  19   {
  20     this->m_PropPicker->AddPickList( actor );
  21     this->Modified( );
  22
  23   } // fi
  24 }
  25
  26 // -------------------------------------------------------------------------
  27 cpExtensions::Visualization::ImageInteractorStyle::
  28 ImageInteractorStyle( )
  29   : Superclass( )
  30 {
  31   this->m_PropPicker = vtkSmartPointer< vtkPropPicker >::New( );
  32   this->m_PropPicker->PickFromListOn( );
  33 }
  34
  35 // -------------------------------------------------------------------------
  36 cpExtensions::Visualization::ImageInteractorStyle::
  37 ~ImageInteractorStyle( )
  38 {
  39 }
  40
  41 // -------------------------------------------------------------------------
  42 bool cpExtensions::Visualization::ImageInteractorStyle::
  43 _PickPosition( double pos[ 3 ] )
  44 {
  45   static const double _0 = double( 0 );
  46   vtkRenderWindowInteractor* rwi = this->GetInteractor( );
  47   if( rwi == NULL )
  48     return( false );
  49
  50   // Find the renderer where the event has been raised
  51   double x = double( rwi->GetEventPosition( )[ 0 ] );
  52   double y = double( rwi->GetEventPosition( )[ 1 ] );
  53   this->FindPokedRenderer( x, y );
  54
  55   // Pick a 3D position
  56   int r = this->m_PropPicker->Pick( x, y, _0, this->CurrentRenderer );
  57   if( r == 0 )
  58     return( false );
  59   this->m_PropPicker->GetPickPosition( pos );
  60   return( true );
  61 }
  62
  63 // eof - $RCSfile$