(soccer) add gaussian splat to scene

[kfarr]

Users wish to place a custom 3d scanned guassian splat in a 3DStreet scene.

What is blocking?

• 3DStreet uses log depth buffer = true to prevent flickering (z-fighting) on street lane striping, street stencils, distant 3dtiles, and other 3d models
• However, our gaussian splat viewing library does not yet work with logarithmic depth buffer

Issue: 3DStreet/aframe-gaussian-splatting#2

What have I tried?

• We now can render a splat when using log depth buffer - yay. There is a PR here: v1 of support for log depth buffer aframe-gaussian-splatting#4
• But, even though the splat displays, it shows up in front of all other objects -- depth sorting of some sort is not happening
• There is a test scene here on glitch showing the error: https://glitch.com/edit/#!/maps-splats-logdepthbuffer
• (Desired behavior here with logdepthbuffer = false: https://glitch.com/edit/#!/maps-splats-geometry )
• I have tried on my own and with claude / cursor for many hours and cannot get a working version of logdepthbuffer and proper sorting

What else can we try?

• Ask for help from @manthrax (three.js Slack), @arthurmougin (who helped with splats before), or @vincentfretin ?
• Disable logdepthbuffer for a specific url such as 3dstreet.app/splats/ --> instruct user to use that URL. Downside is that street geometry and 3dtiles may have z-fighting, multiple URLs are complicated to handle, etc.
• Try a different library? Use the "drop-in" mode of this three.js library and make a new a-frame component wrapper?

[kfarr]

#1420