From d88f4594ac690936a36d0f1d6c760327321925e0 Mon Sep 17 00:00:00 2001
From: Josh Baker <joshbaker77@gmail.com>
Date: Fri, 24 Feb 2017 06:25:50 -0700
Subject: [PATCH] distances on geofence, fixes #141

---
 controller/fence.go | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/controller/fence.go b/controller/fence.go
index 2e43723d..3cf8b764 100644
--- a/controller/fence.go
+++ b/controller/fence.go
@@ -155,14 +155,19 @@ func fenceMatch(hookName string, sw *scanWriter, fence *liveFenceSwitches, metas
 		break
 	}
 	sw.mu.Lock()
+	var distance float64
+	if fence.distance {
+		distance = details.obj.CalculatedPoint().DistanceTo(geojson.Position{X: fence.lon, Y: fence.lat, Z: 0})
+	}
 	sw.fmap = details.fmap
 	sw.fullFields = true
 	sw.msg.OutputType = server.JSON
 	sw.writeObject(ScanWriterParams{
-		id:     details.id,
-		o:      details.obj,
-		fields: details.fields,
-		noLock: true,
+		id:       details.id,
+		o:        details.obj,
+		fields:   details.fields,
+		noLock:   true,
+		distance: distance,
 	})
 
 	if sw.wr.Len() == 0 {