5. Backend

The backend is using Fastapi, and the python version is 3.9+.

  • Design API

    • Send json object to frontend

    1@app.get("/hello/{name}")
2async def say_hello(name: str):
3    return {"message": f"Hello {name}"}

    • In frontend we can use fetch to make a request to backend

    1 async fetch() {
2    const helloworld = await fetch(
3        'http://127.0.0.1:8000/hello/model'
4    ).then(res => res.json())
5    console.log(helloworld);
6},

    • Send mesh file to frontend

    1@app.get("/api/model")
2async def get_display_model():
3    model_path = "./data/mask.obj"
4    file_res = FileResponse(model_path, media_type="application/octet-stream", filename="mask.obj")
5    return file_res

    • Receive mesh in frontend via blob

    1async fetch() {
2    const model = await fetch(
3        'http://127.0.0.1:8000/api/model'
4    ).then(res => res.blob())
5    console.log(model);
6},