ITK  4.1.0
Insight Segmentation and Registration Toolkit
itkSqrtImageAdaptor.h
Go to the documentation of this file.
00001 /*=========================================================================
00002  *
00003  *  Copyright Insight Software Consortium
00004  *
00005  *  Licensed under the Apache License, Version 2.0 (the "License");
00006  *  you may not use this file except in compliance with the License.
00007  *  You may obtain a copy of the License at
00008  *
00009  *         http://www.apache.org/licenses/LICENSE-2.0.txt
00010  *
00011  *  Unless required by applicable law or agreed to in writing, software
00012  *  distributed under the License is distributed on an "AS IS" BASIS,
00013  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00014  *  See the License for the specific language governing permissions and
00015  *  limitations under the License.
00016  *
00017  *=========================================================================*/
00018 #ifndef __itkSqrtImageAdaptor_h
00019 #define __itkSqrtImageAdaptor_h
00020 
00021 #include "itkImageAdaptor.h"
00022 #include "vnl/vnl_math.h"
00023 
00024 namespace itk
00025 {
00026 namespace Accessor
00027 {
00039 template< class TInternalType, class TExternalType >
00040 class ITK_EXPORT SqrtPixelAccessor
00041 {
00042 public:
00045   typedef TExternalType ExternalType;
00046 
00049   typedef TInternalType InternalType;
00050 
00051   static inline void Set(TInternalType & output, const TExternalType & input)
00052   { output = (TInternalType)vcl_sqrt( (double)input ); }
00053 
00054   static inline TExternalType Get(const TInternalType & input)
00055   { return (TExternalType)vcl_sqrt( (double)input ); }
00056 };
00057 } // end namespace Accessor
00058 
00068 template< class TImage, class TOutputPixelType >
00069 class ITK_EXPORT SqrtImageAdaptor:public
00070   ImageAdaptor< TImage, Accessor::SqrtPixelAccessor<
00071                   typename TImage::PixelType,
00072                   TOutputPixelType >   >
00073 {
00074 public:
00076   typedef SqrtImageAdaptor Self;
00077   typedef ImageAdaptor< TImage, Accessor::SqrtPixelAccessor<
00078                           typename TImage::PixelType,
00079                           TOutputPixelType > > Superclass;
00080 
00081   typedef SmartPointer< Self >       Pointer;
00082   typedef SmartPointer< const Self > ConstPointer;
00083 
00085   itkNewMacro(Self);
00086 
00088   itkTypeMacro(SqrtImageAdaptor, ImageAdaptor);
00089 protected:
00090   SqrtImageAdaptor() {}
00091   virtual ~SqrtImageAdaptor() {}
00092 private:
00093   SqrtImageAdaptor(const Self &); //purposely not implemented
00094   void operator=(const Self &);   //purposely not implemented
00095 };
00096 } // end namespace itk
00098 
00099 #endif
00100