[Positioning] Add Request::ss_square_distance()

owlps-positioning/src/referencepoint.cc

@@ -52,6 +52,9 @@ get_all_measurements() const
 /**
  * Before to compute the distance, all the measurements containted in
  * #requests are put together, as if it was one big request.
+ *
+ * Note: to compute the distance between two requests, one should use
+ * Request::ss_square_distance().
  */
 float ReferencePoint::ss_square_distance(const Request &source) const
 {

owlps-positioning/src/request.cc

@@ -58,6 +58,24 @@ void Request::clear()
 
 
 
+/* *** Operations *** */
+
+
+float Request::ss_square_distance(const Request &source) const
+{
+  unordered_map<string, Measurement>
+    source_measurements(source.measurements),
+    my_measurements(measurements) ;
+
+  PosUtil::complete_with_dummy_measurements(
+    my_measurements, source_measurements) ;
+
+  return PosUtil::ss_square_distance(
+           my_measurements, source_measurements) ;
+}
+
+
+
 /* *** Operators *** */
 
 

owlps-positioning/src/request.hh

@@ -30,7 +30,10 @@ protected:
   /// standard positioning request)
   Point3D *real_position ;
 
+  /** @name Write accessors */
+  //@{
   void clear_real_position(void) ;
+  //@}
 
 public:
   Request(const Mobile *_mobile = NULL,
@@ -83,6 +86,12 @@ public:
   void clear(void) ;
   //@}
 
+  /** @name Operations */
+  //@{
+  /// Compute the distance between two Request
+  float ss_square_distance(const Request &source) const ;
+  //@}
+
   /** @name Operators */
   //@{
   const Request& operator=(const Request &source) ;