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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 itkImageToRGBVTKImageFilter_hxx
#define itkImageToRGBVTKImageFilter_hxx
#include "vtkVersion.h"
#include "itkImageToRGBVTKImageFilter.h"
namespace itk
{
/**
* Constructor
*/
template< typename TInputImage >
ImageToRGBVTKImageFilter< TInputImage >
::ImageToRGBVTKImageFilter()
{
m_Output = vtkSmartPointer< vtkImageData >::New();
}
/**
* Destructor
*/
template< typename TInputImage >
ImageToRGBVTKImageFilter< TInputImage >
::~ImageToRGBVTKImageFilter()
{}
/**
* Set an itk::Image as input
*/
template< typename TInputImage >
void
ImageToRGBVTKImageFilter< TInputImage >
::SetInput(const InputImageType *inputImage)
{
m_Input = inputImage;
this->Modified();
}
/**
* Get a vtkImage as output
*/
template< typename TInputImage >
vtkSmartPointer< vtkImageData >
ImageToRGBVTKImageFilter< TInputImage >
::GetOutput() const
{
return m_Output;
}
/**
* Delegate the Update to the importer
*/
template< typename TInputImage >
void
ImageToRGBVTKImageFilter< TInputImage >
::Update()
{
int dimension[3];
dimension[0] = 0;
dimension[1] = 0;
dimension[2] = 0;
double spacing[3];
spacing[0] = 0.;
spacing[1] = 0.;
spacing[2] = 0.;
InputRegionType region = m_Input->GetLargestPossibleRegion();
InputSizeType itk_size = region.GetSize();
InputSpacingType itk_spacing = m_Input->GetSpacing();
for( unsigned int i = 0; i < TInputImage::ImageDimension; i++ )
{
dimension[i] = static_cast< int >( itk_size[i] );
spacing[i] = static_cast< double >( itk_spacing[i] );
}
m_Output->SetDimensions( dimension );
m_Output->SetSpacing( spacing );
m_Output->SetExtent( 0, dimension[0],
0, dimension[1],
0, dimension[2] );
#if VTK_MAJOR_VERSION <= 5
m_Output->SetNumberOfScalarComponents( 3 );
// at first let's convert it to unsigned char
m_Output->SetScalarTypeToUnsignedChar();
m_Output->AllocateScalars();
#else
m_Output->AllocateScalars(VTK_UNSIGNED_CHAR,3);
#endif
//TODO: use itk iterators instead
for( int x = 0; x < dimension[0]; x++ )
{
for( int y = 0; y < dimension[1]; y++ )
{
if( TInputImage::ImageDimension == 3 )
{
for( int z = 0; z < dimension[2]; z++ )
{
InputPixelType* vtkpixel =
static_cast<InputPixelType*>(m_Output->GetScalarPointer(x,y,z));
InputIndexType index;
index[0] = x;
index[1] = y;
index[2] = z;
InputPixelType itkpixel = m_Input->GetPixel(index);
vtkpixel[0] = itkpixel;
vtkpixel[1] = itkpixel;
vtkpixel[2] = itkpixel;
}
}
else
{
InputPixelType* vtkpixel =
static_cast<InputPixelType*>(m_Output->GetScalarPointer(x,y,0));
InputIndexType index;
index[0] = x;
index[1] = y;
InputPixelType itkpixel = m_Input->GetPixel(index);
vtkpixel[0] = itkpixel;
vtkpixel[1] = itkpixel;
vtkpixel[2] = itkpixel;
}
}
}
}
} // end namespace itk
#endif
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