Threebox GLTF models acts weird when underground
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- Dominant language
- TypeScript
- Stars
- 12.4k
- Forks
- 2.4k
- PR merge metrics
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Description
**mapbox-gl-js version**:latest
**browser**: chrome (windows + macos)
### Steps to Trigger Behavior
1.Add customlayer with GLTF model (https://github.com/Tiago-S-Ribeiro/3D-Model-Import-Example-Mapbox-Threebox-/blob/master/Loading3D/pages/add3dModelThreebox.html)
2. Move it underground (with Ctrl+click and drag)
3. Pitch map - then the part what should be underground is visible.

Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Reproduce the issue using the linked Threebox GLTF example: move the model underground with Ctrl+click and drag, then pitch the map in Chrome on Windows or macOS. Trace the custom-layer and GLTF rendering path to determine why underground geometry remains visible; done means the underground portion is correctly hidden when the map is pitched.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- javascript, typescript
- Domain
- computer-graphics, frontend, web-dev
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Clearly specified
- Newbie friendliness
- 35/100