Best practice for initial camera positioning

[onlyhy]

Question: Best practice for initial camera positioning for 3D Gaussian Splat models of varying sizes?

I'm using Spark 2 to load 3D Gaussian Splat models (SPZ), but each model has a different size, bounding box, coordinate system, and forward direction.
It’s very difficult to manually adjust the camera position and lookAt for every model.

I would like to know:

1. What is the official recommended way to automatically center and fit the model in view, regardless of its size?
2. How to automatically position the camera to face the "front" of the model consistently?
3. Is there a built-in helper or API to compute bounding box and set camera distance automatically?

A code example of universal initial camera setup would be greatly appreciated.

HELP!!!!!!!!!!
Thank you!

[mrxz]

There is no one-size-fits-all solution for automatically positioning a model and camera, as it will depend on your use-case. It's also not specific to Gaussian Splats or Spark, so you can look into pre-existing solutions for Three.js.

To get the bounding box of a SplatMesh you can use the SplatMesh.getBoundingBox method. As for determining the coordinate space and forward direction, I don't see how there would be a reliable way to do this automatically. Either you preprocess your splats so they are all consistent, or you include the relevant metadata so your app can make the right adjustments.

[onlyhy]

There is no one-size-fits-all solution for automatically positioning a model and camera, as it will depend on your use-case. It's also not specific to Gaussian Splats or Spark, so you can look into pre-existing solutions for Three.js.

To get the bounding box of a SplatMesh you can use the SplatMesh.getBoundingBox method. As for determining the coordinate space and forward direction, I don't see how there would be a reliable way to do this automatically. Either you preprocess your splats so they are all consistent, or you include the relevant metadata so your app can make the right adjustments.

Thanks for your reply!!! The response data returned by the World Labs interface does not contain relevant original information. Do you know if there are any other available APIs to obtain it?

Thank you!!!