[css-images-3] interpolating cross-fade(A, B) with cross-fade(B, A)
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Description
Currently we spec that the arguments to cross-fade() are interpolated independently. However, this doesn't handle the case of cross-fade(A, B) to cross-fade(B, A) very nicely: it ends up creating a tree of cross-fades where one isn't necessary.
This is particularly a concern when the cross-fades are triggered by transitions which are reversed partway.
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 CSS Images 3 interpolation rules for cross-fade(), focusing on transitions between cross-fade(A, B) and cross-fade(B, A). Review the issue discussion to determine the intended behavior for reversed transitions; the work is done when the specification avoids unnecessary nested cross-fades and clearly defines this interpolation case.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- css
- Domain
- frontend
- Issue type
- Bug
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100