paint property blending: multiply
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- Dominant language
- TypeScript
- Stars
- 12.4k
- Forks
- 2.4k
- PR merge metrics
- No merged PRs in 30d
Description
## Motivation
Adobe Photoshop and Illustrator allow to set the blending to multiply. Actually a really nice feature for showing data heatmap like visualizations. But in contrast to heatmaps, you dont lose the shape of your original data.
Imagine: You paint hundrets of lines on to the map. Now you set in the paint property `line-blending` to `multiply`and you get a wonderful visualization, more accurate than heatmaps, but still the density.
I would love this feature in Mapbox GL and in the Mapbox studio editor!
Sincerely
Simon
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 by locating the paint-property rendering path for line-blending and the Mapbox Studio editor support requested in the issue. Define how a multiply blend should behave for painted lines and verify the result against the heatmap-style visualization described by the reporter.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- javascript, typescript
- Domain
- frontend, web-dev
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100