[core] Replace magic number with constant-based calculation

mapbox · Dec 21, 2016 · 1bb80c0 · 1bb80c0
1 parent da361c3
commit 1bb80c0
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/mbgl/layout/symbol_layout.cpp b/src/mbgl/layout/symbol_layout.cpp
@@ -313,8 +313,8 @@ void SymbolLayout::addFeature(const SymbolFeature& feature,
                 poly.push_back(r);
             }
 
-            // 16 here represents 2 pixels
-            auto poi = mapbox::polylabel(poly, 16.0);
+            // 1 pixel worth of precision, in tile coordinates
+            auto poi = mapbox::polylabel(poly, double(util::EXTENT / util::tileSize));
             Anchor anchor(poi.x, poi.y, 0, minScale);
             addSymbolInstance(polygon[0], anchor);
         }