lib/cpExtensions/Visualization/SeedWidgetCorrector.cxx

   1 #include <cpExtensions/Visualization/SeedWidgetCorrector.h>
   2
   3 #include <vtkCellPicker.h>
   4 #include <vtkSeedWidget.h>
   5
   6 #include <vtkHandleRepresentation.h>
   7 #include <vtkHandleWidget.h>
   8 #include <vtkRenderWindowInteractor.h>
   9
  10 // -------------------------------------------------------------------------
  11 cpExtensions::Visualization::SeedWidgetCorrector*
  12 cpExtensions::Visualization::SeedWidgetCorrector::
  13 New( )
  14 {
  15   return( new cpExtensions::Visualization::SeedWidgetCorrector );
  16 }
  17
  18 // -------------------------------------------------------------------------
  19 void cpExtensions::Visualization::SeedWidgetCorrector::
  20 Configure( vtkCellPicker* picker )
  21 {
  22   this->m_Picker = picker;
  23 }
  24
  25 // -------------------------------------------------------------------------
  26 void cpExtensions::Visualization::SeedWidgetCorrector::
  27 Execute( vtkObject* caller, unsigned long eventId, void* arguments )
  28 {
  29   vtkSeedWidget* wdg = dynamic_cast< vtkSeedWidget* >( caller );
  30   if( wdg == NULL || this->m_Picker == NULL )
  31     return;
  32
  33   if( eventId == vtkCommand::PlacePointEvent )
  34   {
  35     // Get newly added handle and its associated objects
  36     int hId = *( reinterpret_cast< int* >( arguments ) );
  37     vtkHandleWidget* hWdg = wdg->GetSeed( hId );
  38     if( hWdg == NULL )
  39       return;
  40     vtkHandleRepresentation* hRep =
  41       dynamic_cast< vtkHandleRepresentation* >( hWdg->GetRepresentation( ) );
  42     if( hRep == NULL )
  43       return;
  44
  45     // Get clicked point and 3D scene
  46     double p[ 3 ];
  47     hRep->GetDisplayPosition( p );
  48     vtkRenderWindowInteractor* iren = wdg->GetInteractor( );
  49     if( iren == NULL )
  50       return;
  51     vtkRenderer* ren =
  52       iren->FindPokedRenderer( int( p[ 0 ] ), int( p[ 1 ] ) );
  53     if( ren == NULL )
  54       return;
  55
  56     // Correct point with given picker
  57     double q[ 3 ];
  58     this->m_Picker->Pick( p[ 0 ], p[ 1 ], p[ 2 ], ren );
  59     this->m_Picker->GetPickPosition( q );
  60     hRep->SetWorldPosition( q );
  61
  62   } // fi
  63 }
  64
  65 // -------------------------------------------------------------------------
  66 cpExtensions::Visualization::SeedWidgetCorrector::
  67 SeedWidgetCorrector( )
  68   : vtkCommand( ),
  69     m_Picker( NULL )
  70 {
  71 }
  72
  73 // -------------------------------------------------------------------------
  74 cpExtensions::Visualization::SeedWidgetCorrector::
  75 ~SeedWidgetCorrector( )
  76 {
  77 }
  78
  79 // eof - $RCSfile$