playcanvas / playcanvas/engine
Mesh Picker BVH Improvements
Nobody has claimed this yet.
- Dominant language
- JavaScript
- Stars
- 16.8k
- Forks
- 2k
- Avg merge
- 4h 32m
- Merged PRs (30d)
- 222
Description
https://github.com/playcanvas/engine/pull/4637 implements ray mesh-intersection. However, for animated scenes, it only refits the bvh when the mesh updates. This will result in the bvh losing quality over time, so it must be rebuilt after a certain number of frames. However, bvh building is currently not efficient enough for this to be seamless. In the future, a more efficient build method for the bvh must be implemented.
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 reviewing pull request 4637 and the ray mesh-intersection BVH behavior for animated scenes. Determine how BVH quality should be monitored and when rebuilding should occur, then evaluate the build-cost tradeoff; done means animated meshes retain usable intersection quality without making frame processing impractical.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- javascript
- Domain
- computer-graphics, game-dev
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100