visgl / visgl/deck.gl

TextLayer text should not appear smaller when zooming in on it. [Bug]

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bug
Dominant language
TypeScript
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Description

Description

When displaying text using TextLayer I expect the text to stay constant in size independent of zoom. In the below codepen example I see that when zooming in the text becomes smaller. Observe for example the label "Z=-500" which is placed at [0, 0, -500]. Using the scroll wheel to zoom in it becomes almost unreadable small.

Flavors
  • React
  • Python/Jupyter notebook
  • MapboxLayer
  • GoogleMapsOverlay
  • CartoLayer
  • DeckLayer/DeckRenderer for ArcGIS
Expected Behavior

I expect text to have constant size in pixels independent of zoom.

Steps to Reproduce

Simple codepen example:
https://codepen.io/nilscb/pen/mdpjayE?editors=0011

Environment
  • Framework version: deck.gl@8.7.5
  • Browser: google chrome Version 101.0.4951.54
  • OS: Windows
Logs

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Contributor guide

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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 with the linked CodePen reproduction and the TextLayer implementation, focusing on how zoom affects the label "Z=-500" at [0, 0, -500]. Verify the behavior in deck.gl@8.7.5, then confirm that TextLayer text remains constant in pixel size while zooming in and out.

Written by the indexing model from the issue text.

Assessment

Tech stack
typescript
Domain
data-visualization, frontend
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
42/100

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