ITK  4.1.0
Insight Segmentation and Registration Toolkit
itkLabelObjectLineComparator.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 __itkLabelObjectLineComparator_h
00019 #define __itkLabelObjectLineComparator_h
00020 
00021 namespace itk
00022 {
00037 namespace Functor
00038 {
00039 template< class TLabelObjectLine >
00040 class LabelObjectLineComparator
00041 {
00042 public:
00043   bool operator()(TLabelObjectLine const & l1, TLabelObjectLine const & l2) const
00044   {
00045     const typename TLabelObjectLine::IndexType & idx1 = l1.GetIndex();
00046     const typename TLabelObjectLine::IndexType & idx2 = l2.GetIndex();
00047 
00048     for ( int i = TLabelObjectLine::ImageDimension - 1; i >= 0; i-- )
00049       {
00050       if ( idx1[i] < idx2[i] )
00051         {
00052         return true;
00053         }
00054       else if ( idx1[i] > idx2[i] )
00055         {
00056         return false;
00057         }
00058       }
00059     return l1.GetLength() < l2.GetLength();
00060   }
00061 };
00062 }
00063 }
00064 
00065 #endif
00066