[core] Standardize transform origin

All Transform methods that take a PrecisionPoint now assume a “flipped” origin at the upper-left corner of the view. Previously, some methods assumed an origin at the lower-left corner.

1 files changed, 1 insertions, 1 deletions

diff --git a/platform/osx/src/MGLMapView.mm b/platform/osx/src/MGLMapView.mm
index 829c3cade6..82e5e20c1c 100644
--- a/platform/osx/src/MGLMapView.mm
+++ b/platform/osx/src/MGLMapView.mm
@@ -1239,7 +1239,7 @@ public:
         _directionAtBeginningOfGesture = self.direction;
     } else if (gestureRecognizer.state == NSGestureRecognizerStateChanged) {
         NSPoint rotationPoint = [gestureRecognizer locationInView:self];
-        mbgl::PrecisionPoint center(rotationPoint.x, rotationPoint.y);
+        mbgl::PrecisionPoint center(rotationPoint.x, self.bounds.size.height - rotationPoint.y);
         _mbglMap->setBearing(_directionAtBeginningOfGesture + gestureRecognizer.rotationInDegrees, center);
     } else if (gestureRecognizer.state == NSGestureRecognizerStateEnded
                || gestureRecognizer.state == NSGestureRecognizerStateCancelled) {