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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.
You can create a HTML Canvas with a WebGL context (I suggest using a library like Ogl or Regl )and run the functions exported by this library in a fragment shader, then save the current frame by a method like this or any other.
You can create a HTML Canvas with a WebGL context (I suggest using a library like Ogl or Regl )and run the functions exported by this library in a fragment shader, then save the current frame by a method like this or any other.