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"

Author: N-Dekker

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;