MerginMaps / MerginMaps/mobile

Some phantom features on map canvas

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bug qgis
Dominant language
C++
Stars
388
Forks
87
Avg merge
2d 7h
Merged PRs (30d)
20

Description

During testing I was able to create a project, where I get this phantom lines, which can't be clicked

You can find this project here:
https://app.merginmaps.com/projects/input-testing/tc04_zm_coordinates/history/v3

This error is NOT brought by our last changes. I was able to simulate this also in 1.7.0.
It is probable, that I just destroy the project during playing with geometry editing.

https://user-images.githubusercontent.com/83582181/193677520-1b4f5b54-8feb-4cb2-acb9-de12706f7328.mp4

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 opening the linked Mergin Maps project history and watching the attached video, then reproduce the geometry-editing actions that create the phantom lines. Trace the map canvas rendering and interaction path involved; done means the stray, non-clickable lines no longer appear after editing.

Written by the indexing model from the issue text.

Assessment

Domain
computer-graphics, mobile-dev
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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