Intersections with GaussianSplatMesh

[IsaacBerman]

I was wondering if there was any compatibility with raycasting/intersecting with the GaussianSplatMesh, like is currently supported in THREE.js for Object3D types.

Thank you in advance!

[nyan-left]

Hi @IsaacBerman,

Unfortunately, traditional THREE.js raycasters aren't compatible with InstancedBufferGeometry. Here are a couple of alternatives you might consider:

• Use an invisible mesh as a 'hitbox'; scale it to align with your splat and check for raycaster intersections against this mesh.
• GPU Picking as shown in this example: https://threejs.org/examples/?q=interactive#webgl_interactive_cubes_gpu

The GPU Picking approach may require a good understanding of how this repo works, so I would advise the first option :)

[IsaacBerman]

@nyan-left, yes -- invisible hit box is what I was looking at exploring. Thanks!