STYLE: CoordRepType -> CoordinateType code readability

For the sake of code readability, a new  alias is added for
each nested  alias. The old  aliases will still be
available with ITK 6.0, but it is recommended to use  instead.
The  aliases will be removed when  is
enabled. Similarly, , , and
 replace , ,
and , respectively.

Author: hjmjohnson

include/itkBSplineGradientImageFilter.h

@@ -82,9 +82,9 @@ class ITK_TEMPLATE_EXPORT BSplineGradientImageFilter
 #endif
 
   /** Typedefs for the interpolator. */
-  using CoordRepType = TCoordRep;
+  using CoordinateType = TCoordRep;
   using CoefficientType = TCoefficientType;
-  using InterpolatorType = itk::BSplineInterpolateImageFunction<InputImageType, CoordRepType, CoefficientType>;
+  using InterpolatorType = itk::BSplineInterpolateImageFunction<InputImageType, CoordinateType, CoefficientType>;
   using InterpolatorPointerType = typename InterpolatorType::Pointer;
 
 protected:

include/itkBSplineGradientImageFilter.hxx

@@ -91,7 +91,7 @@ BSplineGradientImageFilter<TInputImage, TOutputValueType, TCoordRep, TCoefficien
     index = it.GetIndex();
     for (i = 0; i < ImageDimension; ++i)
     {
-      contIndex[i] = static_cast<CoordRepType>(index[i]);
+      contIndex[i] = static_cast<CoordinateType>(index[i]);
     }
     it.Set(interpolator->EvaluateDerivativeAtContinuousIndex(contIndex));
   }