Getting Started - For all those who are confused.

[shashwatah]

If you looked at this Twitter Post and came here to reproduce what was shown in the video, locally, you might be a bit confused.
Since the repo seems to be stagnant and the README is a bit vague, I am attempting to clear up some of the confusion.

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General Usage

If you simply wish to try the project out, there's a live deployment. Although this doesn't work as intended on my browser.

Or, if you want to try it out locally, you need to:

• Clone the repository.
• Start a server using the cloned repo using any tool of your liking (try serve, or live-server), then go to the server url in your browser.

Note: Simply opening index.html will show you a white screen.
At this point, you will see a spinning cube with red edges, that means everything is fine.

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What about the Spheres?

This is just a stripped down version of that project, intended to be a basic example, hence the red cube. You can create someting similar by experimenting a bit. See here.

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Note: These answers have been posted in other issues on this repo as well, I have tried to put all the basic answers together in one place. If @bgstaal wants, I can add these in the README as well.

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[CafeHelado]

Alternatively, after cloning the project, start (kill exisitng sessions first) your Chromium based browsers with the flag --allow-file-access-from-files

Normal systems:

$: /Applications/Chromium.app/Contents/MacOS/Chromium --allow-file-access-from-files

or

$: chromium-browser --allow-file-access-from-files

or

$: chromium --allow-file-access-from-files

Windows:

%USERPROFILE%\AppData\Local\Google\Chrome\Application\chrome.exe --allow-file-access-from-files 

Then open the index.html