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authorChris Loer <chris.loer@gmail.com>2018-08-14 11:35:39 -0700
committerChris Loer <chris.loer@mapbox.com>2018-08-14 12:35:50 -0700
commit20f880ebec82bbd7553fc382400227efc0105bce (patch)
tree91ee58f2b554bb1a884ced122abb848bf6e23636 /platform/macos
parent9ecb0997effb006e88c25d6fbca2570c8ab51adc (diff)
downloadqtlocation-mapboxgl-20f880ebec82bbd7553fc382400227efc0105bce.tar.gz
[core] Fix querying for annotations near tile boundaries at high zoom.
Fixes issue #12472. This commit doesn't address the underlying issues that come from symbolAnnotationTree using a slightly lower precision coordinate system than the annotations themselves. Instead, it just puts a small padding around each tile when it queries for tile data, so that symbols right at the tile boundary will be included in both tiles. The rendering/querying code will take care of only displaying one instance. The padding is in global coordinates, so at higher zoom the padding will be larger in tile units -- this is consistent with precision loss also being greater at higher zoom.
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diff --git a/platform/macos/CHANGELOG.md b/platform/macos/CHANGELOG.md
index c0266aff5a..1c1454de4d 100644
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+++ b/platform/macos/CHANGELOG.md
@@ -3,6 +3,7 @@
# master
- Don't default-show text/icons that depend on the placement of a paired icon/text [#12483](https://github.com/mapbox/mapbox-gl-native/issues/12483)
+- Fix the `-[MGLMapView annotationAtPoint:]` method near tile boundaries at high zoom. ([#12472](https://github.com/mapbox/mapbox-gl-native/issues/12472))
## Styles and rendering