lib/cpExtensions/Interaction/ImageInteractorStyle.cxx

   1 #include <cpExtensions/Interaction/ImageInteractorStyle.h>
   2
   3 #include <vtkImageActor.h>
   4 #include <vtkRenderWindowInteractor.h>
   5
   6 // -------------------------------------------------------------------------
   7 cpExtensions::Interaction::ImageInteractorStyle::
   8 Self* cpExtensions::Interaction::ImageInteractorStyle::
   9 New( )
  10 {
  11   return( new Self );
  12 }
  13
  14 // -------------------------------------------------------------------------
  15 void cpExtensions::Interaction::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::Interaction::ImageInteractorStyle::
  28 ImageInteractorStyle( )
  29   : Superclass( )
  30 {
  31   this->m_PropPicker = vtkSmartPointer< vtkPropPicker >::New( );
  32   this->m_PropPicker->PickFromListOn( );
  33 }
  34
  35 // -------------------------------------------------------------------------
  36 cpExtensions::Interaction::ImageInteractorStyle::
  37 ~ImageInteractorStyle( )
  38 {
  39 }
  40
  41 // -------------------------------------------------------------------------
  42 bool cpExtensions::Interaction::ImageInteractorStyle::
  43 _PickPosition( int idx[ 2 ], double pos[ 3 ] )
  44 {
  45   vtkRenderWindowInteractor* rwi = this->GetInteractor( );
  46   if( rwi == NULL )
  47     return( false );
  48
  49   // Find the renderer where the event has been raised
  50   idx[ 0 ] = rwi->GetEventPosition( )[ 0 ];
  51   idx[ 1 ] = rwi->GetEventPosition( )[ 1 ];
  52   this->FindPokedRenderer( double( idx[ 0 ] ), double( idx[ 1 ] ) );
  53
  54   // Pick a 3D position
  55   int r = this->m_PropPicker->Pick(
  56     double( idx[ 0 ] ), double( idx[ 1 ] ), double( 0 ),
  57     this->CurrentRenderer
  58     );
  59   if( r == 0 )
  60     return( false );
  61   this->m_PropPicker->GetPickPosition( pos );
  62   return( true );
  63 }
  64
  65 // eof - $RCSfile$