UNIVERSE

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float d = 1.;
  float PI = 3.14159;
  
  float t = time * 0.1;
  float y1 = sin((uv.x - 0.125 + t) * 30.) * 0.02 - 0.005;
  float y2 = sin((uv.x + 0.125 + t) * 30.) * 0.02 - 0.005;
  float angle = pow(clamp(sin(time) + 1., 0., 1.), 4.);
  
  uv=vec2(
    atan(uv.x, uv.y) + time * 0.1,
    (log(length(uv)) - atan(uv.x, uv.y) + time * 0.1)
  );
  
  // uv = mod(uv, mix(0.2, 0.6, angle)) - 0.15;
  uv = mod(uv, vec2(0.3, PI * 0.1)) - 0.15;
  
  // left
  d = min(addLine(uv, vec2(-0.125, y1), mix(0., PI * 0.4, angle), 0.15), d);
  
  // right
  d = min(addLine(uv, vec2(0.125, y2), mix(PI, PI * 0.6, angle), 0.1), d);
  
  // wave
  d = min(addWave(uv, vec2(0.), mix(0.5, 0.2, angle)), d);
  
  d = smoothstep(0.0, mix(0.1, 0.001, angle), d);

vec3 bgColor = palette(gl_FragCoord.y + gl_FragCoord.x + t) * 0.1;
  vec3 fgColor = palette(uv.y + uv.x * 0.001 + t);
  vec3 color = mix(fgColor, bgColor, d);

gl_FragColor = vec4(color, 1.0);
}

UNIVERSE

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