playcanvas / playcanvas/engine
Particles are not scaled when under a parent entity that is scaled
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- Dominant language
- JavaScript
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Description
Not entirely sure this is a bug or not.
Project: https://playcanvas.com/project/822736/overview/test-particles
Same particle effect under 3 different parents of different scales.
While the velocity isn't scaled (as there is a concept of world velocity and local velocity), it's not clear how scale should be applied. Is it a world scale or local scale?
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 reproducing the particle effect in the linked PlayCanvas test project and compare the three parent scales shown in the attached video. Clarify whether particle scale should follow world scale or local scale, then define the expected behavior before identifying the relevant particle-system code and tests.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- javascript
- Domain
- computer-graphics, game-dev
- Issue type
- Bug
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100