What's a way to build an editor similar to this? (Google Earth + drawings on top)

Questions
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1

Hi,

What’s a way to build an editor similar to this?

Notes:

  • world is similar to Google Earth 3d view (hold Shift to change viewing angle)
  • one can draw surfaces and objects with positions relative to the image

What libraries would be useful? Is there an open source software already doing something similar?

I did search for JS 3d modelling, but only getting results like JSCAD.

Thanks!