ManimCommunity / ManimCommunity/manim
DiGraph edges don't animate opacity/fades correctly
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- Dominant language
- Python
- Stars
- 40.9k
- Forks
- 3.1k
- Avg merge
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- Merged PRs (30d)
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Description
## Description of bug / unexpected behavior
When using FadeIn/out or animating opacity on DiGraph edges (or the whole graph), only the arrow tip actually changes opacity, and the line segment doesn't.
## Expected behavior
The tip and line should fade properly.
## How to reproduce the issue
Please see this issue on discord, where I have compiled some data on the problem, including code to reproduce it: [Discord thread](https://discord.com/channels/581738731934056449/1111672784905568439/1111672784905568439)
## System specifications
Happens on both my machine and on the Manimator
## Additional comments
Good luck!
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 linked Discord thread and its reproduction code, then trace how DiGraph edges render their arrow tip and line segment during opacity or FadeIn/FadeOut animations. The fix is complete when both parts of an edge, and edges of the whole graph, fade together as expected.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- computer-graphics
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100