https://twitter.com/Gaxil/status/1204038414863142913?s=20

Fourier Series
f(x) = 	sin( x * 4 ) * 0.125 +
		sin( x * 2 ) * 0.5 + 
		sin( x * 3 ) * 0.25 +
		sin( x );

Pseudo Random Number Based on X & Y using a hash

f( x, y ) = hash( x, y ) = frac( sin( floor(x) + floor(y) * 583 ) * 43758.5453123 )


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Wave Function Collapse
https://github.com/mxgmn/WaveFunctionCollapse
https://www.youtube.com/watch?v=0bcZb-SsnrA
https://marian42.itch.io/wfc 3D Generated City
https://github.com/marian42/wavefunctioncollapse
https://robertheaton.com/2018/12/17/wavefunction-collapse-algorithm/