scene switch lags opacity transition animation

[un0btanium]

I noticed that when I have pinFirstLevel: false that the panorama image I switch to is loaded while the transition occurs. The loading process of the image is causing the webpage to freeze, interrupting the transition. Once the image is loaded the transition is trying to catch up, making the transition seem almost complete instantly and looking very unsmooth and buggy.

The same problem exists when I add a low resolution preview and a high resolution level (and put pinFirstLevel to true). Then the preview images are loaded on startup and the high resolution image is loaded lagging the transition to the scene.

I am currently using equirectangular panorama image. Would this be the cause because the images are large ones and need to be loaded in its entirety? I feel like this issue is related to this one. Would using cube maps instead fix the issue for good?

[tjgq]

Maybe. Large equirectangular images result in a suboptimal rendering experience because they can't be loaded in small pieces. I would generally recommend using cubemaps.

There is also an open PR to do the image loading off-thread, which might help here.

[un0btanium]

Is there a tool you would recommend for splitting a equirectangular image into cubemaps (idealy one that already generates different, customizable tile grid sizes and levels of details and outputs them in seperate folders)?

Interesting that we are getting threading in the browser. Cant wait till that is officially merged and working for more browsers.

[campmdabt]

I use krpano's cli to create tiles from equirectangular photos and then use marzipano to display them. It's a paid product but very good. I initially used the viewer for krpano as well and while was very happy with the author and community support as a whole, I despise the xml based custom coding language it uses instead of Javascript like marzipano. You pay for a license for both pieces, but I only use it to create the tiles.

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On Fri, Apr 24, 2020, 5:46 AM unobtanium ***@***.***> wrote: Is there a tool you would recommend for splitting a equirectangular image into cubemaps (idealy one that already generates different, customizable tile grid sizes and levels of details and outputs them in seperate folders)? Interesting that we are getting threading in the browser. Cant wait till that is officially merged and working for more browsers. — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#299 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ADU3IKPQC7BJL6PYPGBZV33ROFNYPANCNFSM4L4RPTUA> .

[tjgq]

The krpano tools definitely work; Hugin is a free (open source) alternative.

[un0btanium]

Someone knows how the Marzipano Editor Tool does it?

[campmdabt]

Looks like it pulls down https://www.marzipano.net/tool/js/equirect.worker.js to do the work, but neither the ../LICENSES.txt file it references nor the code itself betrays what it's using.