ITK  4.1.0
Insight Segmentation and Registration Toolkit
itkKernelFunctionBase.h
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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 __itkKernelFunctionBase_h
00019 #define __itkKernelFunctionBase_h
00020 
00021 #include "itkFunctionBase.h"
00022 #include "itkConceptChecking.h"
00023 #include "itkNumericTraits.h"
00024 #include "vnl/vnl_math.h"
00025 
00026 namespace itk
00027 {
00042 template< typename TRealValueType = double >
00043 class ITK_EXPORT KernelFunctionBase:public FunctionBase< TRealValueType, TRealValueType >
00044 {
00045 public:
00047   typedef KernelFunctionBase                             Self;
00048   typedef FunctionBase< TRealValueType, TRealValueType > Superclass;
00049   typedef SmartPointer< Self >                           Pointer;
00050   typedef SmartPointer< const Self >                     ConstPointer;
00051 
00052   typedef TRealValueType                             RealType;
00053 
00055   itkTypeMacro(KernelFunctionBase, FunctionBase);
00056 
00058   virtual TRealValueType Evaluate(const TRealValueType & u) const = 0;
00059 
00060 #ifdef ITK_USE_STRICT_CONCEPT_CHECKING
00061 
00062     itkConceptMacro( TRealValueTypeIsFloatingPointCheck,
00063                          ( Concept::IsFloatingPoint< TRealValueType > ) );
00064 
00066 #endif
00067 
00068 protected:
00069   KernelFunctionBase() {};
00070   virtual ~KernelFunctionBase() {};
00071   void PrintSelf(std::ostream & os, Indent indent) const
00072   { Superclass::PrintSelf(os, indent); }
00073 };
00074 } // end namespace itk
00075 
00076 #endif // __itkKernelFunctionBase_h
00077