+// -------------------------------------------------------------------------
+void cpExtensions::Visualization::MPRActors::
+SetLookupTableToColor(
+ unsigned int i, const double& r, const double& g, const double& b
+ )
+{
+ static const double _0 = double( 0 );
+ static const double _1 = double( 1 );
+ static const double _2 = double( 2 );
+ static const double _4 = double( 4 );
+ static const double _6 = double( 6 );
+ static const double _OPACITY = double( 0.6 );
+
+ // Check if the input has been configured
+ vtkImageData* image = this->_Image( i );
+ if( image == NULL )
+ return;
+
+ double range[ 2 ];
+ image->GetScalarRange( range );
+
+ // Get HSV from display color
+ double cmax = ( r > g )? r: g; cmax = ( b > cmax )? b: cmax;
+ double cmin = ( r < g )? r: g; cmin = ( b < cmin )? b: cmin;
+ double d = cmax - cmin;
+
+ double saturation = ( std::fabs( cmax ) > _0 )? d / cmax: _0;
+ double value = cmax;
+ double hue = _0;
+ if( d > _0 )
+ {
+ if( r == cmax )
+ hue = std::fmod( ( g - b ) / d, _6 );
+ else if( g == cmax )
+ hue = ( ( b - r ) / d ) + _2;
+ else if( b == cmax )
+ hue = ( ( r - g ) / d ) + _4;
+ hue *= _1 / _6;
+
+ } // fi
+
+ // Define new lookup table
+ vtkSmartPointer< vtkLookupTable > lut =
+ vtkSmartPointer< vtkLookupTable >::New( );
+ lut->SetScaleToLinear( );
+ lut->SetAboveRangeColor( _0, _0, _0, _0 );
+ lut->SetBelowRangeColor( _0, _0, _0, _0 );
+ lut->SetNanColor( _0, _0, _0, _0 );
+ lut->SetTableRange( range[ 0 ], range[ 1 ] );
+ lut->SetAlphaRange( _0, _OPACITY );
+ lut->SetHueRange( _0, hue );
+ lut->SetSaturationRange( _0, saturation );
+ lut->SetValueRange( _0, value );
+ lut->Build( );
+
+ this->SetLookupTable( i, lut );
+}
+