Laurent's remark: passing the traits as parameter of constructors

AABB_tree/doc_tex/AABB_tree_ref/AABB_traits.tex

@@ -45,6 +45,8 @@ The template parameter \ccc{GeomTraits} provides the geometric types as well as
 \ccCreation
 \ccCreationVariable{traits} 
 
+\ccConstructor{AABB_traits(GeomTraits gt = GeomTraits());}{Default constructor.}
+
 \ccSeeAlso
 
 \ccc{AABBTraits},\\

AABB_tree/doc_tex/AABB_tree_ref/AABB_tree.tex

@@ -51,10 +51,10 @@ Class \ccRefName\ is a static data structure for efficient intersection and dist
 \ccCreation
 \ccCreationVariable{tree} %% variable name
 
-\ccConstructor{AABB_tree();}{Constructs an empty tree.}
+\ccConstructor{AABB_tree(AT at = AT());}{Constructs an empty tree.}
 \ccConstructor{template < class InputIterator>
        AABB_tree( InputIterator begin, 
-                  InputIterator beyond);}
+                  InputIterator beyond, AT at = AT());}
 {Builds the AABB tree data structure. Type \ccc{InputIterator} can be any const iterator such that \ccc{Primitive} has a constructor taking a \ccc{InputIterator} as argument. The tree stays empty if the memory allocation is not successful.}
 
 \ccOperations