add math abs to avoid negative values when calculating zoom (google-map-react#655)

maxchernin · itsmichaeldiego · commit f73e774a4531 · 2018-11-08T15:19:33.000+03:00
* 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
diff --git 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

Original file line number	Diff line number	Diff line change
`@@ -80,8 +80,8 @@ function fitNwSe(nw, se, width, height) {`
`80`	`80`	`return null;`
`81`	`81`	`}`
`82`	`82`
`83`		`- const zoomX = log2(width / GOOGLE_TILE_SIZE / dx);`
`84`		`- const zoomY = log2(height / GOOGLE_TILE_SIZE / dy);`
	`83`	`+ const zoomX = log2(width / GOOGLE_TILE_SIZE / Math.abs(dx));`
	`84`	`+ const zoomY = log2(height / GOOGLE_TILE_SIZE / Math.abs(dy));`
`85`	`85`	`const zoom = Math.floor(EPS + Math.min(zoomX, zoomY));`
`86`	`86`
`87`	`87`	`// TODO find center just unproject middle world point`