google maps api：显示箭头以指示在地图上不存在标记

Question

I've an html application that uses javascript Google Maps API to display some points (markers). Some of the points may not be visible in the current user map (due to zoom, position, etc.). I was looking for somehow to represent this points, for example, an arrow on near the border of the map indicating the direction.

Is there any function / library that may help?

In case there isn't. I've analyzes how to implement this by myself. The direction of the arrow can be achieved by (MarkerPosition - CenterPosition).normalize(). However, how can I draw that arrow in the correct position on the border of the map?

Thanks!

Answer 1

I've developed a solution to the problem. Source code can be found at github.com

https://github.com/mateuyabar/GmapsHiddenMarkers

And a sample map