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webgl-fft-ocean

v1.0.2

Published

2 years ago

Webgl Ocean based on Tessendorf paper. Implementing of Phillips spectrum and its inverse FFT.

Downloads

3

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webgl-fft-ocean

Webgl Ocean based on Tessendorf paper. Implementation of Phillips spectrum and its inverse FFT.

The grid used is a projected grid from screenspace to worldspace. The static, dynamic Phillips spectrum and the inverse FFT of it is displayed on the left panel.

To run the program:

pnpm i
pnpm run dev

Commands:

W: toggle wireframe
Left, right, up, down arrow: displacement given a direction
s,x: pitch,
a,z : up, down

Small program written in typescript. It displays a wave constructed by the inverse FFT of the Phillips spectrum.

Further work:

The sun is missing, should be added in the skybox shader
Better and more realistic scattering should be implemented
better UX
remove symmetry on the ocean by blending it with perlin noise
port the FFT on the GPU:
IDFT Ocean spectrum (Tessendorf) at https://www.shadertoy.com/view/wt2yRd
Ocean surface: Fourier at https://www.shadertoy.com/view/tdSfWG