fill-extrusion layer with large area polygon on terrain, It looks like it's broken
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- Dominant language
- TypeScript
- Stars
- 12.4k
- Forks
- 2.4k
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Description
**mapbox-gl-js version**: v2.2.0
**browser**: chrome v89.0.4389.114
### Steps to Trigger Behavior
1. add map with terrain
2. add fill-extrusion layer that have large area polygon
### Link to Demonstration
https://codepen.io/caelan/pen/ExZWpXN
### Expected Behavior
Expected as flat terrain behavior
### Actual Behavior

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
Open the linked CodePen and reproduce the fill-extrusion layer with a large-area polygon on terrain in Chrome, then compare it with flat terrain behavior. Trace the terrain and fill-extrusion rendering paths; done means the polygon renders as expected rather than showing the broken appearance in the report.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- typescript
- Domain
- computer-graphics, frontend
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100