*

: x x .13 - 1.1 * ; : y y .13 - 1.1 * ;

: w x .59 + y .31 + * * sin 0 max swap
x .31 + y .59 + * * sin 0 max + ;

23 31 w 17 17 w * x +
31 23 w 19 19 w * y x * +
31 31 w 3 3 w * y +

Based on: streak - BradN


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