The map has the size (tiles):
Size = 2 ^ Zoom

Zoom: tiles
0: 1x1
1: 2x2
2: 4x4
3: 8x8

The fastest way to calculate the size - it is a binary shift.

http://www.maptiler.org/google-maps-coo … rojection/
https://msdn.microsoft.com/en-us/library/bb259689.aspx

I'm trying to understand the following code:

        float originalScale = 1 << defaultZoom;
        float currentScale = 1 << OnlineMaps.instance.zoom;

It looks to me like you're using the binary shift operator. Is that the case, or are you overloading it in some way? If you are, could you explain your logic here just a bit?

Thanks!