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webgl-fft-ocean

v1.0.2

Published

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

Downloads

8

Readme

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