Another Fragment :)

another.frag

//co3moz 

#ifdef GL_ES
precision mediump float;
#endif

uniform float time;
uniform vec2 resolution;

vec2 center = vec2(0.5, 0.5);

#define silindir(dis, ic) if(distance(pos, center) < dis && distance(pos, center) > ic)
#define silindir_cap(dis, genislik) silindir(dis, dis - genislik)
#define dondur(neyi, nekadar) temp = neyi.x; neyi.x = neyi.x * cos(nekadar) - neyi.y * sin(nekadar); neyi.y = temp * sin(nekadar) + neyi.y * cos(nekadar)
#define dongu(i, start, step, max) for(float i = start; i<max; i+=step)

void main() {
	float temp;
	vec2 pos = (gl_FragCoord.xy / resolution.xy);
	vec3 color;
	
	pos /= normalize(pos);
	
	dondur(pos, sin(time)/10.);
	
	color.x = sin(pos.x);
	color.y = cos(pos.y);
	color.z = cos(pos.x/pos.y);
	
	
	dongu(i, 0.01, 0.01, 0.1) {
		silindir_cap(0.4 - i * (8. * abs(sin(time) + 2.) / 2.), i) {
			color = vec3(1);	
		}
	}
	
	color *= vec3(normalize(pos), 1);
	gl_FragColor = vec4(color, 1); 
}