diff --git a/vcg/space/deprecated_point3.h b/vcg/space/deprecated_point3.h
index bc80c3ce..2e86074a 100644
--- a/vcg/space/deprecated_point3.h
+++ b/vcg/space/deprecated_point3.h
@@ -391,6 +391,13 @@ public:
 //@}
 //@{
 
+  size_t MaxCoeffId() const
+ {
+     if (_v[0]>_v[1])
+         return _v[0]>_v[2] ? 0 : 2;
+     else
+         return _v[1]>_v[2] ? 1 : 2;
+ }
   /** @name Comparison Operators.
    Note that the reverse z prioritized ordering, useful in many situations.
    **/