Culling or something? Parts of model disappearing on rotation

[sacred flame]

Hey all,

Sorry for the second post. I thought I'd solved it but I hadn't.

Essentially I have a 3d object (.gltf) that I'm loading into three.js and upon rotation via .rotation.y the shins are disappearing.

I've traversed the model and set furstumCulled = false

First image is of load in (with barely turning where one foot is still visible) second image is what happens after a full 360 spin, all the shins are gone.

I am very new to three.js and I really have no idea what could be causing this. Does anyone have any ideas?

[dusky hamlet]

looks unrelated to rotation / frustum culling - since the object is within the frustum

what's most likely happening is z-fighting between character legs and that semi-transparent green circle

consider setting depthTest and depthWrite on that green circle material to false

[sacred flame]

the green circle material is rendered in phaser and independent from the injected three.js, I gave it a go with disabled cones so you can see.

It essentially only clips off the shins at 5π/4 and 7π/4

and it clips the feet off before that?

[still dune]

looks like the character is sticking underground a bit.. do you have orbitcontrols hooked up? You should look at it from the side and see if the feet are sticking out below the terrain

[sacred flame]

Not orbitcontrols no, the camera is fixed and the character rotates.

But if the character was sticking underground, wouldn’t it surface again on rotation?

[sacred flame]

It was the fustrum, the near fustrum was off

[sacred flame]

well maybe not

wtf

it only works with the debuggers on???

    // Add this after setting up the scene
    const helper = new THREE.CameraHelper(camera);
    threeScene.add(helper);

    // Add axes helper to visualize model position
    const axesHelper = new THREE.AxesHelper(5);
    threeScene.add(axesHelper);

and then the debuggers don't render?

Yeah this is the most insane thing. I'd be happy to add someone to the repo to try themselves but this is crazy

it doesn't even need the axesHelper, just the cameraHelper