update

lib/pages/home/home_controller.dart

@@ -50,5 +50,29 @@ class HomeController extends GetxController {
     }
 
   }
+
+  void makePrevious(GeoJsonFeature fs){
+    GeoJsonFeature<GeoJsonMultiPoint> pt = fs  as GeoJsonFeature<GeoJsonMultiPoint>;
+
+    for(int i=0; i<= locations[0].collection.length - 1; i++){
+      GeoJsonMultiPoint p = locations[0].collection[i].geometry as GeoJsonMultiPoint;
+
+      if(p.geoSerie!.geoPoints[0].latitude == pt.geometry!.geoSerie!.geoPoints[0].latitude && p.geoSerie!.geoPoints[0].longitude  == pt.geometry!.geoSerie!.geoPoints[0].longitude ){
+          
+          if(currentFeature.length > 0){
+            currentFeature.clear();
+          }
+          if(i == 0 ){
+            currentFeature.add(locations[0].collection[locations[0].collection.length -1] as GeoJsonFeature);
+          }
+          else{
+            currentFeature.add(locations[0].collection[i - 1] as GeoJsonFeature);
+          }
+      }
+    }
+
+  }
+
+
   
 }