FFT Ocean simulation [Share tox]

devart.space · December 20, 2021, 5:11pm

Hi,

This composant allows you to simulate ocean waves in realtime.
The rendering is optimised by using the Inverse Fast Fourrier Transform algorithm.
This allows you to change, on the fly, parameters like the wind force, the viscosity of the waves, the field size, etc.

Overview:

VIDEO: Vimeo

Parameters:

config

Credit & references

All the math behind was strongly inspired by the creator of OREON ENGINE thanks to his share on the subject:

For more theorical infos, check the original paper writen by Jerry Tessendorf:

https://people.cs.clemson.edu/~jtessen/reports/papers_files/coursenotes2004.pdf

Download

FFTOcean.tox (28.4 KB)

lucasm · December 20, 2021, 8:52pm

This is fantastic, thank you!

matijaerceg · December 20, 2021, 10:28pm

Beautiful! And runs so smoothly too.

Is there a way for a noob to change the style to a PBR-like surface material to make it look like actual water?

lucasm · December 21, 2021, 1:03am

you can, I started fiddling around with it, but haven’t gotten it all worked out yet. I think the ideal solution is to generate a physically accurate normal map representing real angles of the geometry.

FFTOcean_pbrWIP.tox (28.2 KB)

roberto_fusco · November 10, 2022, 7:54pm

Hello @devart.space and thank you so much for this porting/contribution!

I just downloaded it and running in TD 2022.24200 and I get strange simulation behaviors:

I also noticed a couple of warnings about normals, inside the spectrum_to_waves base:

Do you have any idea what it could be?

Ps: I have similar issues with the @lucasm version

Thanks again!

Roberto

devart.space · November 16, 2022, 1:38pm

Hi roberto,

The problem comes from a bug with uTDPass on your version. This bug has been fixed on the Build 2022.29530 - Oct 19, 2022.

So if you update your TD with this version or higher, the problem is solved.

I updated 2 or 3 things so you also can download the tox last version.

Thank you so much for your comment

Have a nice day !

roberto_fusco · December 9, 2022, 1:49pm

Thank you so much for looking into this!

I will try again with the updated version then.

Have a great weekend!
Roberto