From 1bb80c00d6e286fdda8f8bdf695055ad908aace1 Mon Sep 17 00:00:00 2001
From: John Firebaugh <john.firebaugh@gmail.com>
Date: Wed, 21 Dec 2016 09:51:04 -0800
Subject: [PATCH] [core] Replace magic number with constant-based calculation

---
 src/mbgl/layout/symbol_layout.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/mbgl/layout/symbol_layout.cpp b/src/mbgl/layout/symbol_layout.cpp
index 387bb7fb00f..351858f6f85 100644
--- 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);
         }