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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.
*
*=========================================================================*/
#include "itkCastImageFilter.h"
#include "itkImageFileWriter.h"
#include "itkPointSet.h"
#include "itkBSplineScatteredDataPointSetToImageFilter.h"
#include "itkTestingMacros.h"
/**
* In this test, we approximate a sequence of 3D points with a
* parametric curve described by B-Splines
*/
int itkBSplineScatteredDataPointSetToImageFilterTest2( int argc, char * argv[] )
{
if( argc < 2 )
{
std::cerr << "Missing arguments" << std::endl;
std::cerr << "Usage:" << std::endl;
std::cerr << argv[0] << "outputImage" << std::endl;
return EXIT_FAILURE;
}
const unsigned int ParametricDimension = 1;
const unsigned int DataDimension = 3;
typedef double RealType;
typedef unsigned char OutputPixelType;
typedef itk::Vector< RealType, DataDimension > VectorType;
typedef itk::Vector< OutputPixelType, DataDimension > OutputVectorType;
typedef itk::Image< VectorType, ParametricDimension > ImageType;
typedef itk::Image< OutputVectorType, ParametricDimension> OutputImageType;
typedef itk::PointSet<VectorType, ParametricDimension> PointSetType;
PointSetType::Pointer pointSet = PointSetType::New();
// Sample the helix
for ( RealType t = 0.0; t <= 1.0+1e-10; t += 0.05 )
{
unsigned long i = pointSet->GetNumberOfPoints();
PointSetType::PointType point;
point[0] = t;
pointSet->SetPoint( i, point );
VectorType V;
V[0] = 0.25 * std::cos(t*6.0*3.141);
V[1] = 0.25 * std::sin(t*6.0*3.141);
V[2] = 4.00 * t;
pointSet->SetPointData( i, V );
}
// Instantiate the filter and set the parameters
typedef itk::BSplineScatteredDataPointSetToImageFilter
<PointSetType, ImageType> FilterType;
FilterType::Pointer filter = FilterType::New();
EXERCISE_BASIC_OBJECT_METHODS( filter, BSplineScatteredDataPointSetToImageFilter,
PointSetToImageFilter );
// Define the parametric domain
ImageType::SpacingType spacing;
spacing.Fill( 0.01 );
ImageType::SizeType size;
size.Fill( 101 );
ImageType::PointType origin;
origin.Fill( 0.0 );
filter->SetSize( size );
filter->SetOrigin( origin );
filter->SetSpacing( spacing );
filter->SetInput( pointSet );
FilterType::RealType bSplineEpsilon = 1e-4;
filter->SetBSplineEpsilon( bSplineEpsilon );
TEST_SET_GET_VALUE( bSplineEpsilon, filter->GetBSplineEpsilon() );
filter->SetSplineOrder( 3 );
FilterType::ArrayType ncps;
ncps.Fill( 4 );
filter->SetNumberOfControlPoints( ncps );
filter->SetNumberOfLevels( 5 );
filter->SetGenerateOutputImage( false );
FilterType::WeightsContainerType::Pointer pointWeights =
FilterType::WeightsContainerType::New();
pointWeights->Initialize();
unsigned int abritrarySize = filter->GetInput()->GetNumberOfPoints() - 1;
pointWeights->resize( abritrarySize );
for( unsigned int i = 0; i < pointWeights->Size(); ++i )
{
pointWeights->SetElement( i, 2 );
}
filter->SetPointWeights( pointWeights );
TRY_EXPECT_EXCEPTION( filter->Update() );
pointWeights->resize( filter->GetInput()->GetNumberOfPoints() );
for( unsigned int i = 0; i < pointWeights->Size(); ++i )
{
pointWeights->SetElement( i, 2 );
}
filter->SetPointWeights( pointWeights );
TRY_EXPECT_NO_EXCEPTION( filter->Update() );
// Cast the PhiLattice
typedef itk::CastImageFilter< FilterType::PointDataImageType, OutputImageType >
CastImageFilterType;
CastImageFilterType::Pointer caster = CastImageFilterType::New();
caster->SetInput( filter->GetPhiLattice() );
// Write the PhiLattice
typedef itk::ImageFileWriter< OutputImageType > WriterType;
WriterType::Pointer writer = WriterType::New();
writer->SetFileName( argv[1] );
writer->SetInput( caster->GetOutput() );
TRY_EXPECT_NO_EXCEPTION( writer->Update() );
return EXIT_SUCCESS;
}
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