Hello, everyone

I am making a minimap and I want to know if I took a screenshot of the level from the XY view panel in WED (from the top) like this one:



How to know the amount of quants in the real level that correspond to one pixel or vice versa at certain degree of zooming in XY view in WED? Also, if there is another decent way to make minimaps, then it would be better to explain it

Thank you everyone and HAVE A NICE DAY!!