avoid loading invisible files for partial panos of any image type

[DDvO]

This is the first of a series of contributions that I plan to do over the next days or weeks,
providing various extensions/improvements of the code that I've done for myself so far,
supporting partial cylindrical panoramas like this one.

This PR extends the support for partial panoramas of any image type.
It avoids loading image/tile files that would represent just background (i.e., invisible areas),
which helps saving storage and transfer bandwidth for files that anyway would not be shown.

[mpetroff]

Thanks! This looks good. I removed the ES6 syntax to maintain backward compatibility and merged it.

[DDvO]

Thank you too! This was swift :) -- This message was sent using my Vernee Apollo Lite with K-9 Mail. Please excuse my brevity.

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On March 4, 2018 3:06:19 AM GMT+01:00, Matthew Petroff ***@***.***> wrote: Thanks! This looks good. I removed the ES6 syntax to maintain backward compatibility and merged it. -- You are receiving this because you authored the thread. Reply to this email directly or view it on GitHub: #562 (comment)