Expose Norm API

malaterre · Jan 18, 2024 · 6ccc2eb · 6ccc2eb
1 parent 625721a
commit 6ccc2eb
Show file tree

Hide file tree

Showing 2 changed files with 12 additions and 4 deletions.
diff --git a/Source/MediaStorageAndFileFormat/gdcmDirectionCosines.cxx b/Source/MediaStorageAndFileFormat/gdcmDirectionCosines.cxx
@@ -98,15 +98,20 @@ double DirectionCosines::Dot() const
 }
 
 // static function is within gdcm:: namespace, so should not pollute too much on UNIX
-static inline double Norm(const double x[3])
+static inline double NormImpl(const double x[3])
 {
   return sqrt(x[0]*x[0] + x[1]*x[1] + x[2]*x[2]);
 }
 
+double DirectionCosines::Norm(const double v[3])
+{
+  return NormImpl(v);
+}
+
 void DirectionCosines::Normalize(double v[3])
 {
   double den;
-  if ( (den = Norm(v)) != 0.0 )
+  if ( (den = NormImpl(v)) != 0.0 )
     {
     for (int i=0; i < 3; i++)
       {
@@ -119,15 +124,15 @@ void DirectionCosines::Normalize()
 {
   double *x = Values;
   double den;
-  if ( (den = Norm(x)) != 0.0 )
+  if ( (den = NormImpl(x)) != 0.0 )
     {
     for (int i=0; i < 3; i++)
       {
       x[i] /= den;
       }
     }
   x = Values+3;
-  if ( (den = Norm(x)) != 0.0 )
+  if ( (den = NormImpl(x)) != 0.0 )
     {
     for (int i=0; i < 3; i++)
       {

diff --git a/Source/MediaStorageAndFileFormat/gdcmDirectionCosines.h b/Source/MediaStorageAndFileFormat/gdcmDirectionCosines.h
@@ -49,6 +49,9 @@ class GDCM_EXPORT DirectionCosines
   /// Normalize in-place
   static void Normalize(double v[3]);
 
+  /// Return norm of the vector
+  static double Norm(const double v[3]);
+
   /// Make the class behave like a const double *
   operator const double* () const { return Values; }