# Trails and transform feedback curl noise soft particles system source on github

**URL:** <https://discourse.libcinder.org/t/trails-and-transform-feedback-curl-noise-soft-particles-system-source-on-github/1836>\
**Category:** Using Cinder\
**Created:** [June 25, 2021, 10:31pm UTC](https://discourse.libcinder.org/t/trails-and-transform-feedback-curl-noise-soft-particles-system-source-on-github/1836 "2021-06-25T22:31:55Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Dan](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.libcinder.org/dan/32/886_2.png) [@Dan](https://discourse.libcinder.org/u/Dan)\
**Post date:** [June 25, 2021, 10:31pm UTC](https://discourse.libcinder.org/t/trails-and-transform-feedback-curl-noise-soft-particles-system-source-on-github/1836/1 "2021-06-25T22:31:55Z")

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Hi,  
I just shared the source code of this [https://youtu.be/NGrln2cJkeA](https://youtu.be/NGrln2cJkeA) animation. As I already said this code is messy, but some parts are ok:

- transform feedback with a geometry shader for the dying particles
- soft particles
- trails

More info on Github in the readme file