mapbox / mapbox/mapbox-gl-js

Projected maps don't zoom around mouse

Open
#11,158 1 comment 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

bug :lady_beetle:
Dominant language
TypeScript
Stars
12.4k
Forks
2.4k
PR merge metrics
No merged PRs in 30d

Description

During the rotate/shear transition, maps don't zoom about the location of the mouse. The worst case I can find is when you repeatedly have to fight this:

![projection-zoom-offset](https://user-images.githubusercontent.com/572717/138318572-43c27875-8a65-412a-970d-d71bb7a91a0c.gif)

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the projection-zoom offset during the rotate/shear transition using the attached GIF as a reference. Trace the map zoom behavior and projection transition handling; done means repeated zooming remains centered on the mouse location throughout the transition.

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
Needs clarification
Newbie friendliness
25/100

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.