Polyline sometimes drawn over billboard depending on camera angle
- Dominant language
- JavaScript
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Description
Related community forum question:
https://community.cesium.com/t/polyline-geometry-sometimes-are-drawn-under-the-billboardcollection/11205
The user is trying to draw polyline under the spheres in a PrimitiveCollection, but sometimes they are drawn over the sphere if the camera is at a certain angle.
Sandcastle [example](https://sandcastle.cesium.com/#c=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).
Browser: Chrome
Operating System: Windows 10
Contributor guide
Research direction
Start by reproducing the linked Sandcastle example in Chrome on Windows 10, then compare it with the related community forum question. Investigate Cesium's rendering order for polylines and billboard or sphere primitives as the camera angle changes. Done means the polyline consistently remains under the spheres in the reported collection.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- javascript
- Domain
- computer-graphics
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100