catch NaN values from UIPinchGestureRecognizer

2015-05-08 20:15:47 +02:00
parent 9014890d44
commit f96580de61
1 changed files with 5 additions and 0 deletions
--- a/platform/ios/MGLMapView.mm
+++ b/platform/ios/MGLMapView.mm
@@ -843,6 +843,11 @@ std::chrono::steady_clock::duration secondsAsDuration(float duration)
    else if (pinch.state == UIGestureRecognizerStateEnded || pinch.state == UIGestureRecognizerStateCancelled)
    {
        CGFloat velocity = pinch.velocity;
+        if (isnan(velocity))
+        {
+            // UIPinchGestureRecognizer sometimes returns NaN for the velocity
+            velocity = 0;
+        }
        if (velocity > -0.5 && velocity < 3)
        {
            velocity = 0;