Bundle a TIFF accessor function about viv HOT 4 CLOSED

I am going to make a PR on this but I will recommend people not use it. It is way too slow as things stand, even with a caching mechanism as in #30. I'll merge it, but the request times are appalling:

Compare zarr:

With geotiff:

This will need more investigation and another PR but I will merge the current functionality tomorrow

from viv.

Interesting.. They're both doing range requests on flat files right? I wonder why there would be any speed difference at all.

from viv.

They are not both doing range requests - only GeoTIFF is. Perhaps this is it. Zarr does not need to. The data definitely appears to be compressed as the pyramid files are smaller than the raw original image, and GeoTIFF recognizes it as compressed. So I'm not sure what's going on here. I'll try regenerating the pyramid and seeing what I get.

from viv.

Ok just updated the code to cache the decoder pool. It works much better now in terms of rendering but it seems like it might turn your computer's fan on. So let's call this the alpha version :). I suspect that once DeckGL releases their TileLayer improvements so fetching isn't so naive, it will stop doing that.

from viv.