001

void main(){
    vec3 c =black;
    float k = kale(uv(), PI2);
    float f = vrmf(vec2(k * .5 - speed.y * .1 , phi() * .1 - speed.x * .1) , 1);
    c += hsv2rgb(vec3(f, .75, .75));
    gl_FragColor= vec4(c, 1.0);
}