lib/cpExtensions/Visualization/ImageViewerActors.cxx

   1 #include <cpExtensions/Visualization/ImageViewerActors.h>
   2 #include <cpExtensions/Visualization/CursorActors.h>
   3 #include <cpExtensions/Utility.h>
   4 #include <vtkImageData.h>
   5 #include <vtkProperty.h>
   6 #include <vtkRenderWindow.h>
   7 #include <vtkTextActor.h>
   8 #include <vtkTextProperty.h>
   9 #include <sstream>
  10
  11 // -------------------------------------------------------------------------
  12 cpExtensions::Visualization::ImageViewerActors::
  13 Self* cpExtensions::Visualization::ImageViewerActors::
  14 New( )
  15 {
  16   return( new Self( ) );
  17 }
  18
  19 // -------------------------------------------------------------------------
  20 void cpExtensions::Visualization::ImageViewerActors::
  21 SetImage( vtkImageData* image, int orientation )
  22 {
  23   this->Superclass::SetImage( image, orientation );
  24
  25   this->m_Cursor = vtkSmartPointer< CursorActors >::New( );
  26   this->m_Cursor->SetImageBounds( image->GetBounds( ) );
  27   this->m_Cursor->SetImageOrientation( orientation );
  28   this->m_Cursor->GetProperty( 0 )->SetColor( 1, 1, 0 );
  29   this->m_Cursor->GetProperty( 1 )->SetColor( 1, 1, 0 );
  30   this->m_Cursor->GetProperty( 0 )->SetLineWidth( 1.5 );
  31   this->m_Cursor->GetProperty( 1 )->SetLineWidth( 1.5 );
  32   this->m_Cursor->VisibilityOff( );
  33
  34   this->m_SuperCursor = vtkSmartPointer< CursorActors >::New( );
  35   this->m_SuperCursor->SetImageBounds( image->GetBounds( ) );
  36   this->m_SuperCursor->SetImageOrientation( orientation );
  37   this->m_SuperCursor->GetProperty( 0 )->SetColor( 0, 1, 1 );
  38   this->m_SuperCursor->GetProperty( 1 )->SetColor( 0, 1, 1 );
  39   this->m_SuperCursor->GetProperty( 0 )->SetLineWidth( 1.5 );
  40   this->m_SuperCursor->GetProperty( 1 )->SetLineWidth( 1.5 );
  41   this->m_SuperCursor->VisibilityOff( );
  42
  43   // Prepare text
  44   this->m_TextBuffer[ 0 ] = '\0';
  45   this->m_Text = vtkSmartPointer< vtkTextActor >::New( );
  46   this->m_Text->SetTextScaleModeToNone( );
  47   auto textprop = this->m_Text->GetTextProperty( );
  48   textprop->SetColor( 1, 1, 0 );
  49   textprop->SetFontFamilyToCourier( );
  50   textprop->SetFontSize( 18 );
  51   textprop->BoldOff( );
  52   textprop->ItalicOff( );
  53   textprop->ShadowOff( );
  54   textprop->SetJustificationToLeft( );
  55   textprop->SetVerticalJustificationToBottom( );
  56   auto coord = this->m_Text->GetPositionCoordinate( );
  57   coord->SetCoordinateSystemToNormalizedViewport( );
  58   coord->SetValue( 0.01, 0.05 );
  59   this->m_Text->VisibilityOff( );
  60
  61   // Update actor list
  62   this->m_Cursor->InitTraversal( );
  63   while( vtkProp* prop = this->m_Cursor->GetNextProp( ) )
  64     this->AddItem( prop );
  65   this->m_SuperCursor->InitTraversal( );
  66   while( vtkProp* prop = this->m_SuperCursor->GetNextProp( ) )
  67     this->AddItem( prop );
  68   this->AddItem( this->m_Text );
  69 }
  70
  71 // -------------------------------------------------------------------------
  72 void cpExtensions::Visualization::ImageViewerActors::
  73 SetCursor( double* pos, bool neg )
  74 {
  75   this->m_Cursor->SetCursor( pos, neg );
  76   this->_ShowText( pos );
  77   this->m_Cursor->VisibilityOn( );
  78   this->m_Text->VisibilityOn( );
  79 }
  80
  81 // -------------------------------------------------------------------------
  82 void cpExtensions::Visualization::ImageViewerActors::
  83 SetSuperCursor( double* pos, bool neg )
  84 {
  85   this->SetCursor( pos, neg );
  86 }
  87
  88 // -------------------------------------------------------------------------
  89 void cpExtensions::Visualization::ImageViewerActors::
  90 HideViewerActors( )
  91 {
  92   this->m_Cursor->VisibilityOff( );
  93   this->m_Text->VisibilityOff( );
  94 }
  95
  96 // -------------------------------------------------------------------------
  97 cpExtensions::Visualization::ImageViewerActors::
  98 ImageViewerActors( )
  99   : Superclass( )
 100 {
 101 }
 102
 103 // -------------------------------------------------------------------------
 104 cpExtensions::Visualization::ImageViewerActors::
 105 ~ImageViewerActors( )
 106 {
 107 }
 108
 109 // -------------------------------------------------------------------------
 110 void cpExtensions::Visualization::ImageViewerActors::
 111 _CorrectPosition( double* pos, int* ijk )
 112 {
 113   auto image = this->GetImage( );
 114   if( image == NULL )
 115     return;
 116
 117   // Approximate image index
 118   double pcoords[ 3 ];
 119   image->ComputeStructuredCoordinates( pos, ijk, pcoords );
 120
 121   // Manually correct index
 122   int ext[ 6 ];
 123   image->GetExtent( ext );
 124   for( int i = 0; i < 3; ++i )
 125   {
 126     if( ijk[ i ] < ext[ i << 1 ] )
 127       ijk[ i ] = ext[ i << 1 ];
 128     if( ext[ ( i << 1 ) + 1 ] < ijk[ i ] )
 129       ijk[ i ] = ext[ ( i << 1 ) + 1 ];
 130
 131   } // rof
 132
 133   // Get real coordinates
 134   int o = this->GetOrientation( );
 135   ijk[ o ] = this->GetSliceNumber( );
 136   image->GetPoint( image->ComputePointId( ijk ), pos );
 137 }
 138
 139 // -------------------------------------------------------------------------
 140 void cpExtensions::Visualization::ImageViewerActors::
 141 _ShowText( double* pos )
 142 {
 143   auto image = this->GetImage( );
 144   if( image == NULL )
 145     return;
 146
 147   int ijk[ 3 ];
 148   this->_CorrectPosition( pos, ijk );
 149   int o = this->GetOrientation( );
 150
 151   std::stringstream buffer;
 152   buffer << "Axis: " << char( 'X' + char( o ) ) << std::endl;
 153   int nScl = image->GetNumberOfScalarComponents( );
 154   buffer
 155     << "Pixel: [" << ijk[ 0 ]
 156     << "," << ijk[ 1 ]
 157     << "," << ijk[ 2 ] << "]=("
 158     << image->GetScalarComponentAsFloat( ijk[ 0 ], ijk[ 1 ], ijk[ 2 ], 0 );
 159   for( int n = 1; n < nScl; ++n )
 160     buffer
 161       << " : "
 162       << image->GetScalarComponentAsFloat( ijk[ 0 ], ijk[ 1 ], ijk[ 2 ], n );
 163   buffer << ")";
 164   cpExtensions_SPRINTF( this->m_TextBuffer, 1024, buffer.str( ).c_str( ) );
 165   this->m_Text->SetInput( this->m_TextBuffer );
 166   this->m_Text->VisibilityOn( );
 167   this->m_Text->Modified( );
 168 }
 169
 170 // eof - $RCSfile$