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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 "itkImageFileReader.h"
#include "itkImageFileWriter.h"
#include "itkLabelImageToShapeLabelMapFilter.h"
#include "itkTestingMacros.h"
#include "itkMath.h"
namespace m = itk::Math;
int itkLabelImageToShapeLabelMapFilterTest2(int , char *[])
{
const unsigned int dim = 2;
typedef unsigned char PixelType;
typedef itk::Image< PixelType, dim > ImageType;
typedef itk::ShapeLabelObject< PixelType, dim > LabelObjectType;
typedef itk::LabelMap< LabelObjectType > LabelMapType;
ImageType::RegionType region;
ImageType::SizeType size;
size[0] = 11;
size[1] = 13;
ImageType::IndexType index;
index.Fill(0);
region.SetSize(size);
region.SetIndex(index);
LabelMapType::Pointer labelMap;
LabelObjectType::Pointer labelObject;
LabelObjectType::OrientedBoundingBoxPointType obbOrigin;
LabelObjectType::OrientedBoundingBoxSizeType obbSize;
ImageType::Pointer image = ImageType::New();
image->SetRegions(region);
image->Allocate(true);
//
// Test case one pixel
//
index[0] = 5;
index[1] = 7;
image->SetPixel(index, 1);
typedef itk::LabelImageToShapeLabelMapFilter< ImageType, LabelMapType> L2SType;
L2SType::Pointer l2s = L2SType::New();
l2s->SetInput( image );
l2s->SetComputeOrientedBoundingBox(true);
TEST_SET_GET_VALUE(true, l2s->GetComputeOrientedBoundingBox() );
TRY_EXPECT_NO_EXCEPTION( l2s->Update() );
labelMap = l2s->GetOutput();
labelObject = labelMap->GetLabelObject(1);
obbSize = labelObject->GetOrientedBoundingBoxSize();
obbOrigin = labelObject->GetOrientedBoundingBoxOrigin();
TEST_EXPECT_TRUE( m::AlmostEquals(obbSize[0], 1.0) && m::AlmostEquals(obbSize[1], 1.0));
//
// Test case two diagonal pixels
//
++index[0];
++index[1];
image->SetPixel(index, 1);
image->Modified();
TRY_EXPECT_NO_EXCEPTION( l2s->Update() );
labelMap = l2s->GetOutput();
labelObject = labelMap->GetLabelObject(1);
obbSize = labelObject->GetOrientedBoundingBoxSize();
obbOrigin = labelObject->GetOrientedBoundingBoxOrigin();
TEST_EXPECT_TRUE( m::AlmostEquals(obbSize[0], m::sqrt2) && m::AlmostEquals(obbSize[1], 2.0*m::sqrt2));
TEST_EXPECT_TRUE( m::AlmostEquals(obbOrigin[0], 4.0) && m::AlmostEquals(obbOrigin[1], 7.0));
//
// Test case two diagonal pixels, with flip direction matrix
//
ImageType::DirectionType direction;
direction.Fill(0.0);
direction(0,1) = 1.0;
direction(1,0) = 1.0;
image->SetDirection(direction);
image->Modified();
TRY_EXPECT_NO_EXCEPTION( l2s->Update() );
labelMap = l2s->GetOutput();
labelObject = labelMap->GetLabelObject(1);
obbSize = labelObject->GetOrientedBoundingBoxSize();
obbOrigin = labelObject->GetOrientedBoundingBoxOrigin();
TEST_EXPECT_TRUE( m::AlmostEquals(obbSize[0], m::sqrt2) && m::AlmostEquals(obbSize[1], 2.0*m::sqrt2));
TEST_EXPECT_TRUE( m::AlmostEquals(obbOrigin[0], 6.0) && m::AlmostEquals(obbOrigin[1], 5.0));
//
// Test case 2x4 rectangle
//
image->FillBuffer(0);
direction.SetIdentity();
image->SetDirection(direction);
for (unsigned int i = 4; i < 6; ++i)
{
for (unsigned int j = 3; j < 7; ++j)
{
ImageType::IndexType idx;
idx[0] = i;
idx[1] = j;
image->SetPixel(idx, 1);
}
}
image->Modified();
TRY_EXPECT_NO_EXCEPTION( l2s->Update() );
labelMap = l2s->GetOutput();
labelObject = labelMap->GetLabelObject(1);
obbSize = labelObject->GetOrientedBoundingBoxSize();
obbOrigin = labelObject->GetOrientedBoundingBoxOrigin();
std::cout << labelObject;
TEST_EXPECT_TRUE( m::AlmostEquals(obbSize[0], 2.0) && m::AlmostEquals(obbSize[1], 4.0));
TEST_EXPECT_TRUE( m::AlmostEquals(obbOrigin[0], 3.5) && m::AlmostEquals(obbOrigin[1], 2.5));
// Just exercise these methods
std::cout << "OBB vertices: " << labelObject->GetOrientedBoundingBoxVertices() << std::endl;
std::cout << "OBB direction: " << labelObject->GetOrientedBoundingBoxDirection();
return EXIT_SUCCESS;
}
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