I want to ask about lighting. I have a 3D object. When I upload the object to the Babylon sandbox, the 3D object is clearly visible. But when I put it in my code, the object looks dark even though I have given light to the object. My question is, what kind of lighting is in a Babylon sandbox, and how do you define it? Thanks.
The last one about HDR environment is part of the answer to your question.
To easily know about the .env used by sandbox, just check the network tab of your favorite browser’ developper tools: