mynk2611 opened a new pull request, #21320: URL: https://github.com/apache/echarts/pull/21320
<!-- Please fill in the following information to help us review your PR more efficiently. --> ## Brief Information This pull request is in the type of: - [x] bug fixing - [ ] new feature - [ ] others ### What does this PR do? Fixes an unwanted visual glitch where the effect symbol briefly reverses direction at the endpoint when using unidirectional looping animation in series-lines ### Fixed issues <!-- - #20216 : ... --> ## Details ### Before: What was the problem? In unidirectional loop mode (roundTrip: false), the symbol (arrow) briefly flipped its direction backward for a single frame upon reaching the end of the path (t=1), creating an unwanted visual 'flash' before resetting to the origin. https://github.com/user-attachments/assets/7cc46f9c-fc2a-42c4-8898-eceef1bcacb7 <!-- DESCRIBE THE BUG OR REQUIREMENT HERE. --> <!-- ADD SCREENSHOT HERE IF APPLICABLE. --> ### After: How does it behave after the fixing? The symbol now maintains its forward direction and rotation smoothly until the loop resets, eliminating the brief directional flip and ensuring a consistent unidirectional animation. https://github.com/user-attachments/assets/906b94bd-c8ba-4226-a074-3414929c3cbe <!-- THE RESULT AFTER FIXING AND A SIMPLE EXPLANATION ABOUT HOW IT IS FIXED. --> <!-- ADD SCREENSHOT HERE IF APPLICABLE. --> ## Document Info One of the following should be checked. - [x] This PR doesn't relate to document changes - [ ] The document should be updated later - [ ] The document changes have been made in apache/echarts-doc#xxx ## Misc ### ZRender Changes - [ ] This PR depends on ZRender changes (ecomfe/zrender#xxx). ### Related test cases or examples to use the new APIs N.A. ## Others ### Merging options - [ ] Please squash the commits into a single one when merging. ### Other information -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
