Closes #3 -- zoom doesnt increment to 19 if minNumTiles not met #4
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Root problem is that if
zoom
reaches to18
andminNumTiles
is still not reached,zoom
increments to19
butminX
/minY
/maxX
/maxY
don't change. So the tiles produced are incorrect.Approach here is just to stop searching at
zoom = 18
no matter what. This could optionally throw awarning
in the case thati == 18L && ntiles < minNumTiles
.Further, I think that
zoom = 19
is valid; we could change the loop to tryi = 1:19
and then stop no matter what after19
...I also think we can just calculate immediately what the zoom level should be, rather than iterating like is done now... at least we can narrow the focus to within one or two zooms and then do a local search to
zoom_start +/-1
... for another day