trying to get a custom comparator to sort my IntersectionList after a merge()

git-svn-id: svn://anubis/fart/trunk@149 7f9b0f55-74a9-4bce-be96-3c2cd072584d

util/Vector.cc

@@ -49,6 +49,11 @@ double Vector::mag2() const
          + m_array[2] * m_array[2];
 }
 
+double Vector::dist_to(const Vector & other) const
+{
+    return (other - *this).mag();
+}
+
 Vector Vector::proj(const Vector & target) const
 {
     Vector target_normalized = target;

util/Vector.h

@@ -15,6 +15,7 @@ class Vector
         Vector & normalize();
         double mag() const;
         double mag2() const;
+        double dist_to(const Vector & other) const;
         Vector proj(const Vector & target) const;
         Vector reflect(const Vector & target) const;