B4CK to the shaders!

void main(){vec2 u=uv();
float t=time,
a=atan(u.x,u.y),
s=(pow(u.x,4.)+pow(u.y,4.))/
(.8-(
sin((a+t))+sin((a-t*.9)*3.))/4.);
gl_FragColor.xyz=vec3(
1.-abs(s-.3)*5.);}

you can try it here (just past the GLSL code above): https://shawnlawson.github.io/The_Force/