Rotation: Do not depend on non standard touch list ordering

Fixes #610 Fixes #791 Closes #696
hammerjs · Aug 8, 2015 · 287720a · 287720a
1 parent 711d8a1
commit 287720a
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/input.js b/src/input.js
@@ -379,7 +379,7 @@ function getAngle(p1, p2, props) {
  * @return {Number} rotation
  */
 function getRotation(start, end) {
-    return getAngle(end[1], end[0], PROPS_CLIENT_XY) - getAngle(start[1], start[0], PROPS_CLIENT_XY);
+    return getAngle(end[1], end[0], PROPS_CLIENT_XY) + getAngle(start[1], start[0], PROPS_CLIENT_XY);
 }
 
 /**