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SurveyJS
Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.
loading everything upfront (a loading bar) was a better trade off than having unloaded images if you scrolled too fast.
making each image a separate file was not very efficient for basically any reason. i ended up writing my own streamable archive format called an "asset bundle". it is essentially all resources concatenated with.
that code is public -> https://github.com/paperdave/assetbundle
the scale of the universe webapp loads all the assets, but then pixi.js objects are dynamically created and destroyed depending on the scale. i never fully verified but i hope does the right thing and keeps sprite data out of vram when it's not needed.
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