From f73e774a4531187308320fed58e7da2a8228e3fc Mon Sep 17 00:00:00 2001
From: Max Chernin <13330924+maxchernin@users.noreply.github.com>
Date: Thu, 8 Nov 2018 04:19:33 -0800
Subject: [PATCH] add math abs to avoid negative values when calculating zoom
 (#655)

* add math abs to avoid negative values when calculating zoom

* add math.abs with proper styling to pass tests

* add math.abs to dx\dy on fitbounds
---
 src/utils/utils.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/utils/utils.js b/src/utils/utils.js
index 01101a3..ef6874c 100644
--- a/src/utils/utils.js
+++ b/src/utils/utils.js
@@ -80,8 +80,8 @@ function fitNwSe(nw, se, width, height) {
     return null;
   }
 
-  const zoomX = log2(width / GOOGLE_TILE_SIZE / dx);
-  const zoomY = log2(height / GOOGLE_TILE_SIZE / dy);
+  const zoomX = log2(width / GOOGLE_TILE_SIZE / Math.abs(dx));
+  const zoomY = log2(height / GOOGLE_TILE_SIZE / Math.abs(dy));
   const zoom = Math.floor(EPS + Math.min(zoomX, zoomY));
 
   // TODO find center just unproject middle world point