Initial camera position

[fabricDev]

Is there a way to calculate the "initialCameraPosition" and "initialCameraLookAt" dynamically for any given splat file before rendering ? We need the file to be rendered with correct position when its opened for the first time.

[rowild]

What I did was opening the scene, hitting "I" (for the info window to pop up), moving around the camera until I found the position I liked, and eventually copied the values shown in the info window.

[fabricDev]

Thanks for the reply. My requirement is to have splat file rendered with correct position when file is opened for the first time itself. Need a generic logic that would calculate position dynamically.

[rowild]

And how s/would the script logic know what the "proper" position should be?

[fabricDev]

If the logic can evaluate the centroid using the splat file buffer and the screen size
that would suffice. For some of the files I am using, its quite difficult for me to move and get into the position I like after it renders.

[rowild]

I understand the moving-to and positioning problem. I think, though, my use cases are a whole lot smaller than yours are, so my contributions here are very likely not to help at all. Nevertheless let me just drop SuperSplat as a final comment – have you heard of it? I use it to clean up and reposition my splats the way I need them. And they open fine in GaussianSplats3D. (But then again my splats are small, usually flying around a castle; and I do get rid of all those huge amounts of landscapes and surroundings, so the final object is indeed rather small... I have a hunch your requirements and demands are way bigger...)

[mkkellogg]

@fabricDev If you need the center of the splat scene, you could conceivably use SplatMesh.computeBoundingBox(applySceneTransforms, sceneIndex) to first calculate the scene bounds, and then just use the its center. I think you'll most likely want to pass true for the applySceneTransforms parameter, although if that doesn't work you can always try passing false :)