Differences

This shows you the differences between two versions of the page.

--- geofencedsl [2011/01/25 22:10] – donpdonp
+++ geofencedsl [2011/01/25 22:26] – donpdonp
@@ Line 1: / Line 1: @@
 == GeoFence DSL ==
-javascript
+Allow users to write javascript to do what they want to with geofence events.
-fences[] - access to each of the defined geofences
-inside_fences
+Variables
 <code>
-detail = { fence : <The specific fence that caused the event>
+event = { "fence" : <The specific fence that caused the event>
-           date : <trigger date>
+           "date" : <trigger date>
-           verb : IN | OUT
+           "verb" : "IN" | "OUT"
          }
+fences[] - access to each of the user defined geofences
+fence = {
+     "name" : "Bob's GeoFence",
+     "geometry": {
+        "type": "Polygon",
+        "coordinates": [
+          [ [100.0, 0.0], [101.0, 0.0], [101.0, 1.0],
+            [100.0, 1.0], [100.0, 0.0] ]
+          ]
+      } /* from http://locationcommons.org/index.php?title=GeoFence */
+inside_fences[] - list of fences currently "inside"
 </code>
+Send an email on every fence crossing
 <code>
- if detail.verb == "IN" {
+ if event.verb == "IN" {
     email("don@don", "Fence entered!")
  }
 </code>
+Email Brennan after being at the Ace for more than 10 minutes
 <code>
  ace = fences["Ace Hotel"]
- if (detail.verb == "IN" && detail.fence == ace) {
+ if (event.verb == "IN" && event.fence == ace) {
-    if (ace.inside_trigger_date - Time.now > 15.minutes) {
+    if ((new Date()) - ace.inside_trigger_time > 10.minutes) {
       email("brennan", "Nerdout at the ACE Hotel!")
     }
  }
 </code>