COMP: Read Only access to GaussCurvatureData

To remove legacy code "itkGetObjectMacro should be replaced with itkGetModifiableObjectMacro or itkGetConstObjectMacro"
We intend to only provide read access to the calculated curvature data so using itkGetConstObjectMacro.

Author: PranjalSahu

Modules/Core/Mesh/include/itkTriangleMeshCurvatureCalculator.h

@@ -107,7 +107,7 @@ class ITK_TEMPLATE_EXPORT TriangleMeshCurvatureCalculator : public Object
   itkSetObjectMacro(TriangleMesh, InputMeshType);
 
   /** Get Gauss curvature. */
-  itkGetModifiableObjectMacro(GaussCurvatureData, DoubleVectorContainer);
+  itkGetConstObjectMacro(GaussCurvatureData, DoubleVectorContainer);
 
   /** Set the curvature type to Guass. */
   void

Modules/Core/Mesh/test/itkTriangleMeshCurvatureCalculatorTest.cxx

@@ -41,8 +41,6 @@ itkTriangleMeshCurvatureCalculatorTest(int argc, char * argv[])
   // Exercise basic object methods
   ITK_EXERCISE_BASIC_OBJECT_METHODS(curvCalculator, TriangleMeshCurvatureCalculator, Object);
 
-  using DoubleVectorContainerPointer = typename CurvatureCalculatorType::DoubleVectorContainerPointer;
-
   // Test for empty mesh, curvature data should be null.
   TriangleMeshType::Pointer triangleMesh = TriangleMeshType::New();
 
@@ -68,7 +66,7 @@ itkTriangleMeshCurvatureCalculatorTest(int argc, char * argv[])
   curvCalculator->Compute();
 
   // Output should be null for empty mesh.
-  DoubleVectorContainerPointer gaussCurvatureData = curvCalculator->GetModifiableGaussCurvatureData();
+  auto gaussCurvatureData = curvCalculator->GetGaussCurvatureData();
   ITK_TEST_EXPECT_TRUE(gaussCurvatureData == nullptr);
 
 
@@ -173,7 +171,7 @@ itkTriangleMeshCurvatureCalculatorTest(int argc, char * argv[])
     curvCalculator->Compute();
 
     gaussCurvatureData = curvCalculator->GetGaussCurvatureData();
-    ITK_TEST_EXPECT_TRUE(gaussCurvatureData->Size() == inputMesh->GetNumberOfPoints())
+    ITK_TEST_EXPECT_TRUE(gaussCurvatureData->Size() == inputMesh->GetNumberOfPoints());
   }
 
   return EXIT_SUCCESS;