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/*=========================================================================
*
* Copyright Insight Software Consortium
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
#ifndef itkPathToChainCodePathFilter_hxx
#define itkPathToChainCodePathFilter_hxx
#include "itkPathToChainCodePathFilter.h"
namespace itk
{
template< typename TInputPath, typename TOutputChainCodePath >
PathToChainCodePathFilter< TInputPath, TOutputChainCodePath >
::PathToChainCodePathFilter() :
m_MaximallyConnected( false )
{
this->SetNumberOfRequiredInputs(1);
}
template< typename TInputPath, typename TOutputChainCodePath >
void
PathToChainCodePathFilter< TInputPath, TOutputChainCodePath >
::GenerateData(void)
{
OffsetType offset;
OffsetType tempOffset;
OffsetType zeroOffset;
zeroOffset.Fill(0);
InputPathInputType inputPathInput;
int dimension = OffsetType::GetOffsetDimension();
typename Superclass::InputPathConstPointer inputPtr = this->GetInput();
typename Superclass::OutputPathPointer outputPtr = this->GetOutput(0);
//outputPtr->SetRequestedRegion( inputPtr->GetRequestedRegion() );
//outputPtr->SetBufferedRegion( inputPtr->GetBufferedRegion() );
//outputPtr->SetLargestPossibleRegion( inputPtr->GetLargestPossibleRegion() );
//outputPtr->Allocate(); // Allocate() is an Image function
outputPtr->Clear();
inputPathInput = inputPtr->StartOfInput();
outputPtr->SetStart( inputPtr->EvaluateToIndex(inputPathInput) );
for ( OutputPathInputType outputPathInput = 0;; )
{
offset = inputPtr->IncrementInput(inputPathInput);
if ( zeroOffset == offset ) { break; }
if ( !m_MaximallyConnected )
{
outputPtr->InsertStep(outputPathInput++, offset);
}
else
{
for ( int d = 0; d < dimension; d++ )
{
if ( offset[d] )
{
tempOffset.Fill(0);
tempOffset[d] = offset[d];
outputPtr->InsertStep(outputPathInput++, tempOffset);
}
}
}
}
}
template< typename TInputPath, typename TOutputChainCodePath >
void
PathToChainCodePathFilter< TInputPath, TOutputChainCodePath >
::PrintSelf(std::ostream & os, Indent indent) const
{
Superclass::PrintSelf(os, indent);
os << indent << "MaximallyConnected: " << m_MaximallyConnected << std::endl;
}
} // end namespace itk
#endif
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