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Alchemist0823 / three.quarks

Three.quarks is a general purpose particle system / VFX engine for three.js
https://quarks.art
MIT License
501 stars 25 forks source link

Spawning particles local space to parent #93

Open JackPlaymint opened 1 week ago

JackPlaymint commented 1 week ago

Is your feature request related to a problem? Please describe. Particle systems that have been made a child of a moving object seem to lag behind that parent object as it moves.

Describe the solution you'd like I think ideally in this situation, spawned particles should appear in a fixed position in the parent object's local space.

Describe alternatives you've considered Unfortunately, I can't see a way around this (other than just putting up with the discrepancy in position.

Additional context In this video, the ship reverses full speed before apply force upward (and the thruster turns on), however you'll notice that the thruster appears to be closer to the ship and then further away as it lags behind the ship's position (to clarify, these are not emitted in world space).

https://github.com/user-attachments/assets/4a0d3e66-2451-4afc-81f1-0c6e199054cf

hichemfantar commented 1 week ago

i can confirm this issue. my use case is gun muzzle flash lagging behind as the gun changes position quickly.

edit: actually now that i tested again i can't find the lag. i did do a refactor recently.

do you mind sharing a codesandbox that reproduces the issue?

Alchemist0823 commented 1 week ago

Is your feature request related to a problem? Please describe. Particle systems that have been made a child of a moving object seem to lag behind that parent object as it moves.

Describe the solution you'd like I think ideally in this situation, spawned particles should appear in a fixed position in the parent object's local space.

Describe alternatives you've considered Unfortunately, I can't see a way around this (other than just putting up with the discrepancy in position.

Additional context In this video, the ship reverses full speed before apply force upward (and the thruster turns on), however you'll notice that the thruster appears to be closer to the ship and then further away as it lags behind the ship's position (to clarify, these are not emitted in world space).

Screen_Recording_2024-09-11_at_16.30.37.mov

I already made a fix with 9fe3832732b77cc3ff7348591d6697bc8517a3ee . could you upgrade three.quarks to the latest version and give a try on that