maptalks / maptalks/maptalks.js
Vertical lines disappear at certain camera angles
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Description
# maptalks's version and what browser you use?
maptalks-gl v0.105.4
chrome
# Issue description
Vertical lines in GL are flat rectangles, that disappear at certain camera angles (sloped/horizontal lines affected too).
It looks especially bad when there are many lines, the whole map sections disappear.
They should be either line primitives (GL_LINES/GL_LINE_STRIP) or decals facing camera (billboards).
https://github.com/user-attachments/assets/922fa757-08d0-427e-992d-dbd91f98e36d
# Please provide a reproduction URL (on any jsfiddle like site)
https://joric.github.io/stalker/
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
Start with the reproduction at https://joric.github.io/stalker/ in Chrome and observe the vertical lines while changing camera angles. Trace the map rendering path responsible for these lines; done means vertical, sloped, and horizontal lines remain visible at affected angles, including in dense map sections.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- javascript
- Domain
- computer-graphics, web-dev
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 38/100