facebookarchive/Keyframes

Exporter: Support for OPACITY on images, not just layers

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#104 opened on Jan 18, 2017

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 (2 comments) (0 reactions) (0 assignees)JavaScript (5,337 stars) (304 forks)batch import
enhancementhelp wanted

Description

Here I faced a curious problem: I made an alpha animation for a png image in AE, but after exporting,the OPACITY attribute of that animation didn't appear in the json file.However.If I made this just for layer(not image Layer), OPACITY appeared as expected. Any ideas?

Contributor guide

Tech stack
javascript
Domain
tooling
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
Basic knowledge of JavaScriptFamiliarity with the Keyframes exporter module
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40
Research direction
Investigate the exporter code in the Keyframes repository, specifically how layers and images are handled. Look for where opacity is applied to layers and understand why it's missing for images. Check the JSON output structure to identify the difference. Consider modifying the exporter to include opacity for image layers by mirroring the layer opacity logic. Review any existing tests for layer opacity and add similar tests for images.