I want to be a 3D editor. How can I identify a basic architecture and fill in the code?

such as the title,
I want to design and develop an online 3D editing software in my spare time, but I don"t know how to build it. I"m afraid that if I find it wrong in the middle of the writing, I will come back to change the structure, then it will be troublesome.
but now there are so many editors on the market, ps, AI,AE, ah, I think their architecture or design should have been summarized in the computer field, unfortunately, I do not come from a computer professional background, the basic knowledge is relatively weak, so I do not know where to start to understand, ask for advice.

Html5 html node.js javascript electron

Mar.20,2021

Modeling software is the same as General IDE. IDE's experience should be enough for reference

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