My first tixy

https://tixy.land/?code=sin%285*t%29*%28%21%28x%5Ey%29%2F%28%28x%2By%29**0.5%29%29

Eek ... Maths

But dang, that beats all our punches :)

https://tixy.land/?code=%28sin%28x%2FPI-t%2Fy%29*y%2F2%29*cos%28t%29

It's maths, so I have no idea what I'm doing, but it is fun to just play around with the parameters.
I call this creation "Sinus Confusion" ... LOL

(sin(x/PI-t/y)*y/2)*cos(t)