Add /.metadata/ to.gitignore

.gitignore

@@ -19,3 +19,4 @@ doc
 *.mapgr
 *.path
 *.tgz
+/.metadata/

be-graphes-model/src/main/java/org/insa/graphs/model/Path.java

@@ -195,11 +195,13 @@ public class Path {
      * Compute the length of this path (in meters).
      *
      * @return Total length of the path (in meters).
-     * @deprecated Need to be implemented.
      */
     public float getLength() {
-        // TODO:
-        return 0;
+    	float result = 0f;
+    	for (Arc arc : arcs) {
+    		result += arc.getLength();
+    	}
+        return result;
     }
 
     /**