STYLE: Replace Fill(0.) with {} initializer for local variables in tests

Replaced `Fill(0.)`, `Fill(0.0)`, `Fill(0.0f)`, and `Fill(0u)` calls with `{}`
initializers.

Follow-up to pull request #4881
commit 569a8b6
"STYLE: Replace Fill(0) with {} initializer for local variables in tests"

Modules/Bridge/VtkGlue/test/itkImageToVTKImageFilterTest.cxx

@@ -48,8 +48,7 @@ itkImageToVTKImageFilterTest(int, char *[])
   origin[0] = -1.5;
   origin[1] = 0.222;
   origin[2] = 0;
-  DirectionType direction;
-  direction.Fill(0.0);
+  DirectionType direction{};
   direction[0][1] = 1;
   direction[1][0] = -1;
   direction[2][2] = 0.7;

Modules/Core/Common/test/itkImageTest.cxx

@@ -31,8 +31,7 @@ class TestTransform
   OutputPointType
   TransformPoint(const InputPointType & inputPoint) const
   {
-    OutputPointType outputPoint;
-    outputPoint.Fill(0.0);
+    OutputPointType outputPoint{};
     // if InputPoint Dimension < 2 then embed point in 2D space
     // else project the point to 2D space.
     for (unsigned int d = 0; d < std::min(inputPoint.GetPointDimension(), outputPoint.GetPointDimension()); ++d)

Modules/Core/Common/test/itkMatrixTest.cxx

@@ -33,8 +33,7 @@ itkMatrixTest(int, char *[])
 
   using vnlVectorType = vnl_vector_fixed<NumericType, 3>;
 
-  MatrixType matrix;
-  matrix.Fill(0.0);
+  MatrixType matrix{};
   matrix.SetIdentity();
 
   VectorType v1;

Modules/Core/ImageFunction/test/itkRayCastInterpolateImageFunctionTest.cxx

@@ -54,8 +54,7 @@ itkRayCastInterpolateImageFunctionTest(int itkNotUsed(argc), char * itkNotUsed(a
   image->SetRegions(region);
   image->Allocate();
 
-  PointType origin;
-  origin.Fill(0.0);
+  PointType origin{};
 
   SpacingType spacing;
   spacing.Fill(1.0);

Modules/Core/Mesh/test/itkParametricSpaceToImageSpaceMeshFilterTest.cxx

@@ -101,8 +101,7 @@ InternalTest(int argc, char * argv[])
   imageIterator.GoToBegin();
 
   using PointType = typename InputMeshType::PointType;
-  PointType point;
-  point.Fill(0.);
+  PointType point{};
 
   using PointDataContainer = typename InputMeshType::PointDataContainer;
   using PointDataContainerPointer = typename InputMeshType::PointDataContainerPointer;

Modules/Core/Mesh/test/itkSphereMeshSourceTest.cxx

@@ -54,8 +54,7 @@ itkSphereMeshSourceTest(int, char *[])
   //  itk::Mesh<float>::PointsContainer::Iterator   m_output = myoutput->Begin();
 
   IPT * pt_ptr;
-  IPT   pt;
-  pt.Fill(0.0);
+  IPT   pt{};
   pt_ptr = &pt;
 
   for (int i = 0; i < 12; ++i)

Modules/Core/Mesh/test/itkVTKPolyDataWriterTest02.cxx

@@ -64,8 +64,7 @@ itkVTKPolyDataWriterTest02(int argc, char * argv[])
 
   MeshType::Pointer myMesh = mySphereMeshSource->GetOutput();
 
-  PointType pt;
-  pt.Fill(0.);
+  PointType pt{};
 
   bool testPassed = true;
 

Modules/Core/QuadEdgeMesh/test/itkQuadEdgeMeshScalarDataVTKPolyDataWriterTest1.cxx

@@ -43,8 +43,7 @@ itkQuadEdgeMeshScalarDataVTKPolyDataWriterTest1(int argc, char * argv[])
   using PointType = SphereMeshSourceType::PointType;
   using VectorType = SphereMeshSourceType::VectorType;
 
-  PointType center;
-  center.Fill(0.0);
+  PointType center{};
 
   VectorType scale;
   scale.Fill(1.0);
@@ -62,8 +61,7 @@ itkQuadEdgeMeshScalarDataVTKPolyDataWriterTest1(int argc, char * argv[])
 
   MeshType::Pointer myMesh = mySphereMeshSource->GetOutput();
 
-  PointType pt;
-  pt.Fill(0.);
+  PointType pt{};
 
   myMesh->Print(std::cout);
 

Modules/Core/SpatialObjects/test/itkGaussianSpatialObjectTest.cxx

@@ -41,8 +41,7 @@ itkGaussianSpatialObjectTest(int, char *[])
   myGaussian->SetSigmaInObjectSpace(sigma);
   ITK_TEST_SET_GET_VALUE(sigma, myGaussian->GetSigmaInObjectSpace());
 
-  GaussianType::PointType center;
-  center.Fill(0.0);
+  GaussianType::PointType center{};
   myGaussian->SetCenterInObjectSpace(center);
   ITK_TEST_SET_GET_VALUE(center, myGaussian->GetCenterInObjectSpace());
 

Modules/Core/SpatialObjects/test/itkImageMaskSpatialObjectTest3.cxx

@@ -53,8 +53,7 @@ itkImageMaskSpatialObjectTest3(int, char *[])
 
   ImageType::IndexType index{};
 
-  ImageType::DirectionType direction;
-  direction.Fill(0.0);
+  ImageType::DirectionType direction{};
   direction[0][1] = 1;
   direction[1][0] = 1;
   direction[2][2] = 1;

Modules/Core/Transform/test/itkBSplineDeformableTransformTest.cxx

@@ -61,8 +61,7 @@ itkBSplineDeformableTransformTest1()
    */
 
   using OriginType = TransformType::OriginType;
-  OriginType origin;
-  origin.Fill(0.0);
+  OriginType origin{};
 
   using RegionType = TransformType::RegionType;
   RegionType           region;
@@ -598,8 +597,7 @@ itkBSplineDeformableTransformTest3()
    */
 
   using OriginType = TransformType::OriginType;
-  OriginType origin;
-  origin.Fill(0.0);
+  OriginType origin{};
 
   using RegionType = TransformType::RegionType;
   RegionType           region;

Modules/Core/Transform/test/itkBSplineTransformTest.cxx

@@ -59,8 +59,7 @@ itkBSplineTransformTest1()
    */
 
   using OriginType = TransformType::OriginType;
-  OriginType origin;
-  origin.Fill(0.0);
+  OriginType origin{};
 
   using PhysicalDimensionsType = TransformType::PhysicalDimensionsType;
   PhysicalDimensionsType dimensions;
@@ -615,8 +614,7 @@ itkBSplineTransformTest3()
    */
 
   using OriginType = TransformType::OriginType;
-  OriginType origin;
-  origin.Fill(0.0);
+  OriginType origin{};
 
   using PhysicalDimensionsType = TransformType::PhysicalDimensionsType;
   PhysicalDimensionsType dimensions;

Modules/Core/Transform/test/itkQuaternionRigidTransformTest.cxx

@@ -214,8 +214,7 @@ itkQuaternionRigidTransformTest(int, char *[])
     rotation->SetIdentity();
     rotation->SetRotation(qrotation);
 
-    TransformType::OffsetType ioffset;
-    ioffset.Fill(0.0f);
+    TransformType::OffsetType ioffset{};
 
     // rotation->ComputeOffset();
 

Modules/Core/Transform/test/itkRigid2DTransformTest.cxx

@@ -269,8 +269,7 @@ itkRigid2DTransformTest(int, char *[])
       return EXIT_FAILURE;
     }
 
-    TransformType::OffsetType ioffset;
-    ioffset.Fill(0.0f);
+    TransformType::OffsetType ioffset{};
 
     rotation->SetOffset(ioffset);
 

Modules/Core/Transform/test/itkRigid3DPerspectiveTransformTest.cxx

@@ -107,8 +107,7 @@ itkRigid3DPerspectiveTransformTest(int, char *[])
     auto translation = TransformType::New();
     translation->SetFocalDistance(focal);
 
-    TransformType::OffsetType ioffset;
-    ioffset.Fill(0.0);
+    TransformType::OffsetType ioffset{};
 
     translation->SetOffset(ioffset);
     ITK_TEST_SET_GET_VALUE(ioffset, translation->GetOffset());
@@ -170,8 +169,7 @@ itkRigid3DPerspectiveTransformTest(int, char *[])
     auto rigid = TransformType::New();
     rigid->SetFocalDistance(focal);
 
-    TransformType::OffsetType ioffset;
-    ioffset.Fill(0.0);
+    TransformType::OffsetType ioffset{};
 
     rigid->SetOffset(ioffset);
 

Modules/Core/Transform/test/itkRigid3DTransformTest.cxx

@@ -310,8 +310,7 @@ itkRigid3DTransformTest(int, char *[])
 
     rotation->SetMatrix(mrotation);
 
-    TransformType::OffsetType ioffset;
-    ioffset.Fill(0.0f);
+    TransformType::OffsetType ioffset{};
 
     rotation->SetOffset(ioffset);
 

Modules/Core/Transform/test/itkTransformGeometryImageFilterTest.cxx

@@ -102,14 +102,12 @@ itkTransformGeometryImageFilterTest(int argc, char * argv[])
   ITK_TRY_EXPECT_NO_EXCEPTION(inputImage = itk::ReadImage<ImageType>(argv[1]));
 
   // Set up transforms
-  ImageType::PointType center;
-  center.Fill(0.0);
+  ImageType::PointType center{};
   center[0] = 2.0; // In mm along X (RL-axis)
   center[1] = 5.0; // In mm along Y (AP-axis)
   center[2] = 7.0; // In mm along Z (IS-axis)
 
-  itk::Vector<double, Dimension> translation;
-  translation.Fill(0.);
+  itk::Vector<double, Dimension> translation{};
   translation[0] = 10.0; // In mm along X (RL-axis)
   translation[1] = 15.0; // In mm along Y (AP-axis)
   translation[2] = 20.0; // In mm along Z (IS-axis)

Modules/Core/Transform/test/itkVersorTransformTest.cxx

@@ -440,8 +440,7 @@ itkVersorTransformTest(int, char *[])
 
     // Check the computed parameters
 
-    VectorType axis;
-    axis.Fill(0.0);
+    VectorType axis{};
     axis[2] = 1.0;
     VersorType v;
     v.Set(axis, a);

Modules/Filtering/DisplacementField/test/itkInverseDisplacementFieldImageFilterTest.cxx

@@ -61,8 +61,7 @@ itkInverseDisplacementFieldImageFilterTest(int argc, char * argv[])
   DisplacementFieldType::SpacingType spacing;
   spacing.Fill(1.0);
 
-  DisplacementFieldType::PointType origin;
-  origin.Fill(0.0);
+  DisplacementFieldType::PointType origin{};
 
   DisplacementFieldType::RegionType region;
   DisplacementFieldType::SizeType   size;

Modules/Filtering/DisplacementField/test/itkIterativeInverseDisplacementFieldImageFilterTest.cxx

@@ -65,8 +65,7 @@ itkIterativeInverseDisplacementFieldImageFilterTest(int argc, char * argv[])
   DisplacementFieldType::SpacingType spacing;
   spacing.Fill(1.0);
 
-  DisplacementFieldType::PointType origin;
-  origin.Fill(0.0);
+  DisplacementFieldType::PointType origin{};
 
   DisplacementFieldType::RegionType region;
   DisplacementFieldType::SizeType   size;

Modules/Filtering/DisplacementField/test/itkLandmarkDisplacementFieldSourceTest.cxx

@@ -56,8 +56,7 @@ itkLandmarkDisplacementFieldSourceTest(int argc, char * argv[])
   DisplacementFieldType::SpacingType spacing;
   spacing.Fill(1.0);
 
-  DisplacementFieldType::PointType origin;
-  origin.Fill(0.0);
+  DisplacementFieldType::PointType origin{};
 
   DisplacementFieldType::RegionType region;
   DisplacementFieldType::SizeType   size;

Modules/Filtering/DisplacementField/test/itkTimeVaryingVelocityFieldIntegrationImageFilterTest.cxx

@@ -45,8 +45,7 @@ itkTimeVaryingVelocityFieldIntegrationImageFilterTest(int argc, char * argv[])
   using DisplacementFieldType = itk::Image<VectorType, 3>;
   using TimeVaryingVelocityFieldType = itk::Image<VectorType, 4>;
 
-  TimeVaryingVelocityFieldType::PointType origin;
-  origin.Fill(0.0);
+  TimeVaryingVelocityFieldType::PointType origin{};
 
   TimeVaryingVelocityFieldType::SpacingType spacing;
   spacing.Fill(2.0);

Modules/Filtering/DisplacementField/test/itkTimeVaryingVelocityFieldTransformTest.cxx

@@ -32,8 +32,7 @@ itkTimeVaryingVelocityFieldTransformTest(int, char *[])
   using DisplacementFieldType = itk::Image<VectorType, ComponentDimension>;
   using TimeVaryingVelocityFieldType = itk::Image<VectorType, VelocityFieldDimension>;
 
-  TimeVaryingVelocityFieldType::PointType origin;
-  origin.Fill(0.0);
+  TimeVaryingVelocityFieldType::PointType origin{};
 
   TimeVaryingVelocityFieldType::SpacingType spacing;
   spacing.Fill(2.0);

Modules/Filtering/FastMarching/test/itkFastMarchingImageFilterBaseTest.cxx

@@ -62,8 +62,7 @@ FastMarchingImageFilterBaseTestFunction()
   fastMarchingFilter->SetOutputDirection(outputDirection);
   ITK_TEST_SET_GET_VALUE(outputDirection, fastMarchingFilter->GetOutputDirection());
 
-  typename FastMarchingImageFilterType::OutputPointType outputOrigin;
-  outputOrigin.Fill(0.0);
+  typename FastMarchingImageFilterType::OutputPointType outputOrigin{};
   fastMarchingFilter->SetOutputOrigin(outputOrigin);
   ITK_TEST_SET_GET_VALUE(outputOrigin, fastMarchingFilter->GetOutputOrigin());
 

Modules/Filtering/FastMarching/test/itkFastMarchingQuadEdgeMeshFilterBaseTest.cxx

@@ -45,8 +45,7 @@ itkFastMarchingQuadEdgeMeshFilterBaseTest(int, char *[])
 
   using FastMarchingType = itk::FastMarchingQuadEdgeMeshFilterBase<MeshType, MeshType>;
 
-  MeshType::PointType center;
-  center.Fill(0.);
+  MeshType::PointType center{};
 
   using SphereSourceType = itk::RegularSphereMeshSource<MeshType>;
   auto sphere_filter = SphereSourceType::New();

Modules/Filtering/FastMarching/test/itkFastMarchingQuadEdgeMeshFilterBaseTest3.cxx

@@ -57,8 +57,7 @@ itkFastMarchingQuadEdgeMeshFilterBaseTest3(int, char *[])
   points->Reserve(100);
   pointdata->Reserve(100);
 
-  MeshType::PointType p;
-  p.Fill(0.);
+  MeshType::PointType p{};
 
   int k = 0;
 

Modules/Filtering/FastMarching/test/itkFastMarchingQuadEdgeMeshFilterWithNumberOfElementsTest.cxx

@@ -44,8 +44,7 @@ itkFastMarchingQuadEdgeMeshFilterWithNumberOfElementsTest(int, char *[])
 
   using FastMarchingType = itk::FastMarchingQuadEdgeMeshFilterBase<MeshType, MeshType>;
 
-  MeshType::PointType center;
-  center.Fill(0.);
+  MeshType::PointType center{};
 
   using SphereSourceType = itk::RegularSphereMeshSource<MeshType>;
   auto sphere_filter = SphereSourceType::New();

Modules/Filtering/ImageFeature/test/itkHessianRecursiveGaussianFilterScaleSpaceTest.cxx

@@ -102,8 +102,7 @@ itkHessianRecursiveGaussianFilterScaleSpaceTest(int, char *[])
     HessianImageType::Pointer outputImage = filter->GetOutput();
 
     // Get the value at the center of the image, the location of the peak of the Gaussian
-    PointType center;
-    center.Fill(0.0);
+    PointType center{};
 
     IndexType centerIndex = outputImage->TransformPhysicalPointToIndex(center);
 
@@ -157,8 +156,7 @@ itkHessianRecursiveGaussianFilterScaleSpaceTest(int, char *[])
     HessianImageType::Pointer outputImage = filter->GetOutput();
 
     // Get the value at the center of the image, the location of the peak of the Gaussian
-    PointType center;
-    center.Fill(0.0);
+    PointType center{};
 
     IndexType centerIndex = outputImage->TransformPhysicalPointToIndex(center);
 

Modules/Filtering/ImageGradient/test/itkGradientRecursiveGaussianFilterTest.cxx

@@ -153,8 +153,7 @@ itkGradientRecursiveGaussianFilterTest(int argc, char * argv[])
   //
   // Test with a change in image direction
   //
-  myImageType::DirectionType direction;
-  direction.Fill(0.0);
+  myImageType::DirectionType direction{};
   direction[0][0] = -1.0;
   direction[1][1] = -1.0;
   direction[2][2] = -1.0;

Modules/Filtering/ImageGrid/test/itkBSplineScatteredDataPointSetToImageFilterTest.cxx

@@ -123,8 +123,7 @@ itkBSplineScatteredDataPointSetToImageFilterTest(int argc, char * argv[])
   ITK_TEST_SET_GET_VALUE(ncps, filter->GetNumberOfControlPoints());
 
 
-  FilterType::ArrayType close;
-  close.Fill(0u);
+  FilterType::ArrayType close{};
   filter->SetCloseDimension(close);
   ITK_TEST_SET_GET_VALUE(close, filter->GetCloseDimension());
 

Modules/Filtering/ImageGrid/test/itkBSplineScatteredDataPointSetToImageFilterTest2.cxx

@@ -81,8 +81,7 @@ itkBSplineScatteredDataPointSetToImageFilterTest2(int argc, char * argv[])
   spacing.Fill(0.01);
   ImageType::SizeType size;
   size.Fill(101);
-  ImageType::PointType origin;
-  origin.Fill(0.0);
+  ImageType::PointType origin{};
 
   filter->SetSize(size);
   filter->SetOrigin(origin);

Modules/Filtering/ImageGrid/test/itkBSplineScatteredDataPointSetToImageFilterTest3.cxx

@@ -99,8 +99,7 @@ itkBSplineScatteredDataPointSetToImageFilterTest3(int argc, char * argv[])
   ImageType::SizeType size;
   // Adding 0.5 to avoid rounding errors
   size.Fill(static_cast<unsigned int>(1.0 / spacing[0] + .5) + 1);
-  ImageType::PointType origin;
-  origin.Fill(0.0);
+  ImageType::PointType origin{};
 
   filter->SetSize(size);
   filter->SetOrigin(origin);

Modules/Filtering/ImageGrid/test/itkBSplineScatteredDataPointSetToImageFilterTest5.cxx

@@ -144,8 +144,7 @@ itkBSplineScatteredDataPointSetToImageFilterTest5(int argc, char * argv[])
   size[0] = 1000;
   size[1] = 100;
 
-  ImageType::PointType origin;
-  origin.Fill(0.0);
+  ImageType::PointType origin{};
 
   filter->SetSize(size);
   filter->SetOrigin(origin);

Modules/Filtering/ImageGrid/test/itkResampleImageTest.cxx

@@ -91,8 +91,7 @@ itkResampleImageTest(int, char *[])
   resample->SetOutputStartIndex(index);
   ITK_TEST_SET_GET_VALUE(index, resample->GetOutputStartIndex());
 
-  ImageType::PointType origin;
-  origin.Fill(0.0);
+  ImageType::PointType origin{};
   resample->SetOutputOrigin(origin);
   ITK_TEST_SET_GET_VALUE(origin, resample->GetOutputOrigin());