Polylines slice through 3D Tiles rather than draping over them
Open
category - 3d tiles
category - polyline
theme - 3D Tiles as Terrain
type - bug
- Dominant language
- JavaScript
- Stars
- 15.7k
- Forks
- 3.9k
- Avg merge
- 4d 6h
- Merged PRs (30d)
- 34
Description
When clamping a polyline to 3D Tiles it slices through the mesh rather than draping over the topmost surface. This is a limitation of the way ground polylines are rendered.

Contributor guide
Research direction
Start by investigating the ground polyline rendering path, since the issue identifies it as the source of the limitation. Reproduce the behavior with a polyline clamped to 3D Tiles and compare it with the expected topmost-surface behavior. Done means the polyline drapes over the mesh instead of slicing through it.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- javascript
- Domain
- computer-graphics
- Issue type
- Bug
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100