ThresholdImageView.cxx

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#include "ThresholdImageView.h"
#include <vtkImageReslice.h>
#include <vtkLookupTable.h>
#include <vtkImageData.h>


  //=========================================================================
  //=========================================================================
  //=========================================================================
  //=========================================================================
        ThresholdImageView::ThresholdImageView( )
  {
          _minValue                                     =       0;
          _maxValue                                     =       1000;
          _baseColorR                           =       1;
          _baseColorG                           =       0;
          _baseColorB                           =       0;
  }

  //=========================================================================
  ThresholdImageView::~ThresholdImageView()
  {
  }
  //=========================================================================



//----------------------------------------------------------------------------
void ThresholdImageView::SetminMaxValue(int min, int max)
{
        _minValue = min;
        _maxValue = max;
}


//----------------------------------------------------------------------------
void ThresholdImageView::ConfigLookupTable()  // virtual
{
        double range[2];
        
        GetImage()->GetScalarRange(range);
        if (range[1]==0)
        {
                range[1]=255;
        }
        
        int minTot = floor (range[0]);
        int maxTot = ceil (range[1]);
        
        int minVal = floor (_minValue);
        int maxVal = floor (_maxValue);

        vtkLookupTable* thresholdTable = GetThresholdTable();
        thresholdTable->SetNumberOfTableValues(maxTot+1);
        thresholdTable->SetTableRange(range); 
        thresholdTable->SetAlphaRange(0, 1);
        thresholdTable->SetValueRange(0, 1);
        thresholdTable->SetSaturationRange(0, 0); 
        thresholdTable->SetRampToLinear( );

        //Assign a fake color for the upper image, and set the white as transparent
        int i;
        for(i = minTot; i <= maxTot; i++)
        {
                if( i >= minVal && i <= maxVal )
                {
                        thresholdTable->SetTableValue(i,_baseColorR,_baseColorG,_baseColorB, 1);
                }
                else if( i >= minTot && i < minVal )
                {
                        thresholdTable->SetTableValue(i, 1.0, 1.0, 1.0, 0); //transparent
                }
                else if( i > maxVal && i < maxTot )
                {
                        thresholdTable->SetTableValue(i, 1.0, 1.0, 1.0, 0); //transparent
                }
                else
                {
                        thresholdTable->SetTableValue(i, 1.0, 1.0, 1.0, 0); //transparent
                }
        } // for
        thresholdTable->Build( );

}


//----------------------------------------------------------------------------
void ThresholdImageView::SetBaseColor(double r, double g, double b)
{
        _baseColorR = r;
        _baseColorG = g;
        _baseColorB = b;
}


// EOF