Actually an unsigned/signed integer issue

theopolisme · Apr 17, 2019 · 8234264 · 8234264
1 parent af88453
commit 8234264
Show file tree

Hide file tree

Showing 2 changed files with 4 additions and 4 deletions.
diff --git a/index.html b/index.html
@@ -93,7 +93,7 @@ <h2>Render complete!</h2>
 <script src="lib/leaflet.heat.min.js"></script>
 <script src="lib/prettysize.js"></script>
 <script src="lib/oboe-browser.min.js"></script>
-<script src="index.js"></script>
+<script src="index.js?v=3"></script>
 
 <!-- BEGIN GOOGLE ANALYTICS -->
 <script>

diff --git a/index.js b/index.js
@@ -75,9 +75,9 @@
 			var latitude = location.latitudeE7 * SCALAR_E7,
 				longitude = location.longitudeE7 * SCALAR_E7;
 
-			// Handle negative latlngs. 
-			if ( latitude > 180 ) latitude = -latitude % 180;
-			if ( longitude > 180 ) longitude = -longitude % 180;
+			// Handle negative latlngs due to google unsigned/signed integer bug.
+			if ( latitude > 180 ) latitude = latitude - (2 ** 32) * SCALAR_E7;
+			if ( longitude > 180 ) longitude = longitude - (2 ** 32) * SCALAR_E7;
 
 			if ( type === 'json' ) latlngs.push( [ latitude, longitude ] );
 			return oboe.drop;