added getLength()

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

@@ -210,11 +210,14 @@ public class Path {
      * 
      * @return Total length of the path (in meters).
      * 
-     * @deprecated Need to be implemented.
      */
     public float getLength() {
-        // TODO:
+    	float acc = 0;
-        return 0;
+    	for (Arc l : arcs) {
+    		acc += l.getLength();
+    	}
+
+        return acc;
     }
 
     /**
@@ -225,10 +228,10 @@ public class Path {
      * @return Time (in seconds) required to travel this path at the given speed (in
      *         kilometers-per-hour).
      * 
-     * @deprecated Need to be implemented.
      */
     public double getTravelTime(double speed) {
-        return (this.getLength()/speed);
+    	double speed2 = speed * 1000/3600; 
+        return (this.getLength()/speed2);
     }
 
     /**