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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkSpatialObjectToPointSetFilter.txx,v $
Language: C++
Date: $Date: 2008-01-22 13:26:50 $
Version: $Revision: 1.9 $
Copyright (c) Insight Software Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#ifndef _itkSpatialObjectToPointSetFilter_txx
#define _itkSpatialObjectToPointSetFilter_txx
#include "itkSpatialObjectToPointSetFilter.h"
namespace itk
{
/** Constructor */
template <class TInputSpatialObject, class TOutputPointSet>
SpatialObjectToPointSetFilter<TInputSpatialObject,TOutputPointSet>
::SpatialObjectToPointSetFilter()
{
this->SetNumberOfRequiredInputs(1);
m_ChildrenDepth = 0;
m_SamplingFactor = 1;
}
/** Destructor */
template <class TInputSpatialObject, class TOutputPointSet>
SpatialObjectToPointSetFilter<TInputSpatialObject,TOutputPointSet>
::~SpatialObjectToPointSetFilter()
{
}
/** Set the Input SpatialObject */
template <class TInputSpatialObject, class TOutputPointSet>
void
SpatialObjectToPointSetFilter<TInputSpatialObject,TOutputPointSet>
::SetInput(const InputSpatialObjectType *input)
{
// Process object is not const-correct so the const_cast is required here
this->ProcessObject::SetNthInput(0,
const_cast< InputSpatialObjectType * >( input ) );
}
/** Connect one of the operands */
template <class TInputSpatialObject, class TOutputPointSet>
void
SpatialObjectToPointSetFilter<TInputSpatialObject,TOutputPointSet>
::SetInput( unsigned int index, const TInputSpatialObject * object )
{
// Process object is not const-correct so the const_cast is required here
this->ProcessObject::SetNthInput(index,
const_cast< TInputSpatialObject *>( object ) );
}
/** Get the input Spatial Object */
template <class TInputSpatialObject, class TOutputPointSet>
const typename SpatialObjectToPointSetFilter<TInputSpatialObject,TOutputPointSet>::InputSpatialObjectType *
SpatialObjectToPointSetFilter<TInputSpatialObject,TOutputPointSet>
::GetInput(void)
{
if (this->GetNumberOfInputs() < 1)
{
return 0;
}
return static_cast<const TInputSpatialObject * >
(this->ProcessObject::GetInput(0) );
}
/** Get the input Spatial Object */
template <class TInputSpatialObject, class TOutputPointSet>
const typename SpatialObjectToPointSetFilter<TInputSpatialObject,TOutputPointSet>::InputSpatialObjectType *
SpatialObjectToPointSetFilter<TInputSpatialObject,TOutputPointSet>
::GetInput(unsigned int idx)
{
return static_cast< const TInputSpatialObject * >
(this->ProcessObject::GetInput(idx));
}
/** Update */
template <class TInputSpatialObject, class TOutputPointSet>
void
SpatialObjectToPointSetFilter<TInputSpatialObject,TOutputPointSet>
::GenerateData(void)
{
itkDebugMacro(<< "SpatialObjectToPointSetFilter::Update() called");
// Get the input and output pointers
const InputSpatialObjectType * inputObject = this->GetInput();
typename OutputPointSetType::Pointer outputPointSet = this->GetOutput();
// Look for the number of points to allocate
unsigned long numberOfPoints = 0;
if(dynamic_cast<const PointBasedSpatialObjectType*>(inputObject))
{
numberOfPoints = dynamic_cast<const PointBasedSpatialObjectType*>(inputObject)->GetNumberOfPoints()/m_SamplingFactor;
}
ChildrenListType* children = inputObject->GetChildren(m_ChildrenDepth);
typename ChildrenListType::const_iterator it = children->begin();
for(;it!=children->end();it++)
{
if(dynamic_cast<const PointBasedSpatialObjectType*>((*it).GetPointer()))
{
numberOfPoints += dynamic_cast<const PointBasedSpatialObjectType*>((*it).GetPointer())->GetNumberOfPoints()/m_SamplingFactor;
}
}
typedef typename OutputPointSetType::PointDataContainer DataContainer;
outputPointSet->SetPointData( DataContainer::New());
outputPointSet->GetPoints()->Reserve( numberOfPoints );
outputPointSet->GetPointData()->Reserve( numberOfPoints );
typename OutputPointSetType::PointIdentifier pointId = 0;
typename OutputPointSetType::PointType point;
// add the object it itself
unsigned long n;
if(dynamic_cast<const PointBasedSpatialObjectType*>(inputObject))
{
n = dynamic_cast<const PointBasedSpatialObjectType*>(inputObject)->GetNumberOfPoints();
for(unsigned int i=0;i<n;i+=m_SamplingFactor)
{
typename InputSpatialObjectType::PointType transformedPoint
= inputObject->GetIndexToWorldTransform()->TransformPoint(
dynamic_cast<const PointBasedSpatialObjectType*>(inputObject)->GetPoint(i)->GetPosition());
for(unsigned int j=0;j< itkGetStaticConstMacro(ObjectDimension) ;j++)
{
point[j] = transformedPoint[j];
}
outputPointSet->SetPoint(pointId++, point );
}
}
// then add children points
it = children->begin();
for(;it!=children->end();it++)
{
if(dynamic_cast<const PointBasedSpatialObjectType*>((*it).GetPointer()))
{
n = dynamic_cast<const PointBasedSpatialObjectType*>((*it).GetPointer())->GetNumberOfPoints();
for(unsigned int i=0;i<n;i+=m_SamplingFactor)
{
typename InputSpatialObjectType::PointType transformedPoint
= inputObject->GetIndexToWorldTransform()->TransformPoint(dynamic_cast<const PointBasedSpatialObjectType*>((*it).GetPointer())->GetPoint(i)->GetPosition());
for(unsigned int j=0;j< itkGetStaticConstMacro(ObjectDimension) ;j++)
{
point[j] = transformedPoint[j];
}
outputPointSet->SetPoint(pointId++, point );
}
}
}
delete children;
itkDebugMacro(<< "SpatialObjectToPointSetFilter::Update() finished");
} // end update function
template<class TInputSpatialObject, class TOutputPointSet>
void
SpatialObjectToPointSetFilter<TInputSpatialObject,TOutputPointSet>
::PrintSelf(std::ostream& os, Indent indent) const
{
Superclass::PrintSelf(os, indent);
os << indent << "Children depth : " << m_ChildrenDepth << std::endl;
os << indent << "Sampling Factor : " << m_SamplingFactor << std::endl;
}
} // end namespace itk
#endif
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