1 /*========================================================================= 2 * 3 * Copyright Insight Software Consortium 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0.txt 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 *=========================================================================*/ 18 #ifndef itkOverUnderColormapFunction_hxx 19 #define itkOverUnderColormapFunction_hxx 20 21 #include "itkOverUnderColormapFunction.h" 22 23 namespace itk 24 { 25 namespace Function 26 { 27 template< typename TScalar, typename TRGBPixel > 28 typename OverUnderColormapFunction< TScalar, TRGBPixel >::RGBPixelType 29 OverUnderColormapFunction< TScalar, TRGBPixel > operator ()(const TScalar & v) const30::operator()(const TScalar & v) const 31 { 32 // Map the input scalar between [0, 1]. 33 RealType value = this->RescaleInputValue(v); 34 35 // Apply the color mapping. 36 RealType red = value; 37 RealType green = value; 38 RealType blue = value; 39 40 if ( value == 0.0 ) 41 { 42 // pixel is saturated in the dark 43 red = 0.0; 44 green = 0.0; 45 blue = 1.0; 46 } 47 else if ( value == 1.0 ) 48 { 49 // pixel is saturated in the white 50 red = 1.0; 51 green = 0.0; 52 blue = 0.0; 53 } 54 55 // Set the rgb components after rescaling the values. 56 RGBPixelType pixel; 57 NumericTraits<TRGBPixel>::SetLength(pixel, 3); 58 59 pixel[0] = this->RescaleRGBComponentValue(red); 60 pixel[1] = this->RescaleRGBComponentValue(green); 61 pixel[2] = this->RescaleRGBComponentValue(blue); 62 63 return pixel; 64 } 65 } // end namespace Function 66 } // end namespace itk 67 68 #endif 69