[core] OverscaledTileID::isChildOf should check wrap values.

Fixes issue #13478
2018-11-29 12:50:10 -08:00
parent 0151061947
commit f87ef3f72a
3 changed files with 10 additions and 2 deletions
--- a/include/mbgl/tile/tile_id.hpp
+++ b/include/mbgl/tile/tile_id.hpp
@@ -181,7 +181,8 @@ inline uint32_t OverscaledTileID::overscaleFactor() const {
 }

 inline bool OverscaledTileID::isChildOf(const OverscaledTileID& rhs) const {
-    return overscaledZ > rhs.overscaledZ &&
+    return wrap == rhs.wrap &&
+           overscaledZ > rhs.overscaledZ &&
           (canonical == rhs.canonical || canonical.isChildOf(rhs.canonical));
 }