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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 "itkBinaryMaskToNarrowBandPointSetFilter.h"
#include "itkMesh.h"
#include "itkImage.h"
#include "itkImageRegionIterator.h"
int itkImageToMeshFilterTest(int , char *[] )
{
const unsigned int Dimension = 2;
typedef unsigned char BinaryMaskPixelType;
typedef itk::Image<
BinaryMaskPixelType,
Dimension > BinaryMaskImageType;
//
// Initialize an image with a white square in a black background
//
BinaryMaskImageType::Pointer binaryMask = BinaryMaskImageType::New();
BinaryMaskImageType::SizeType size;
BinaryMaskImageType::IndexType index;
BinaryMaskImageType::RegionType region;
size[0] = 100;
size[1] = 100;
index[0] = 0;
index[1] = 0;
region.SetIndex( index );
region.SetSize( size );
binaryMask->SetRegions( region );
binaryMask->Allocate();
binaryMask->FillBuffer( 0 );
size[0] = 60;
size[1] = 60;
index[0] = 20;
index[1] = 20;
region.SetIndex( index );
region.SetSize( size );
itk::ImageRegionIterator< BinaryMaskImageType > it( binaryMask, region );
it.GoToBegin();
while( !it.IsAtEnd() )
{
it.Set( 255 );
++it;
}
//
// Set up the filter
//
typedef itk::Mesh< float, Dimension > MeshType;
typedef itk::BinaryMaskToNarrowBandPointSetFilter<
BinaryMaskImageType,
MeshType
> GeneratorType;
GeneratorType::Pointer narrowBandGenerator = GeneratorType::New();
narrowBandGenerator->SetInput( binaryMask );
try
{
narrowBandGenerator->Update();
}
catch( itk::ExceptionObject & excp )
{
std::cerr << "Exception thrown during the execution of the generator " << std::endl;
std::cerr << excp << std::endl;
return EXIT_FAILURE;
}
//
// Checking the output
//
typedef MeshType::PointType PointType;
typedef MeshType::PointsContainer PointsContainer;
typedef PointsContainer::Pointer PointsContainerPointer;
typedef PointsContainer::ConstIterator PointsIterator;
typedef MeshType::PointDataContainer PointDataContainer;
typedef PointDataContainer::Pointer PointDataContainerPointer;
typedef PointDataContainer::ConstIterator PointDataIterator;
MeshType::Pointer pointSet = narrowBandGenerator->GetOutput();
PointsContainerPointer points = pointSet->GetPoints();
PointDataContainerPointer pointData = pointSet->GetPointData();
PointsIterator point = points->Begin();
PointsIterator lastPoint = points->End();
PointDataIterator data = pointData->Begin();
PointDataIterator lastData = pointData->End();
while( point != lastPoint && data != lastData )
{
const PointType & p = point.Value();
binaryMask->TransformPhysicalPointToIndex( p, index );
if( ( !binaryMask->GetPixel( index ) && data.Value() > 0 ) ||
( binaryMask->GetPixel( index ) && data.Value() < 0 ) )
{
std::cerr << "Pixel " << index << " shouldn't be in the narrow band" << std::endl;
return EXIT_FAILURE;
}
++point;
++data;
}
return EXIT_SUCCESS;
}
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