lib/cpExtensions/Visualization/ImageViewerActors.cxx

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