shaders

// Author @patriciogv - 2015
// http://patriciogonzalezvivo.com
// modified by Paloma Kop 2023

#ifdef GL_ES
precision mediump float;
#endif

uniform vec2 u_resolution;
uniform vec2 u_mouse;
uniform float u_time;

void main(){
    vec2 st = gl_FragCoord.xy/u_resolution.xy;
    vec3 color = vec3(0.0);

    vec2 pos = vec2(0.5)-st;

    float r = length(pos)*2.496;
    float a = atan(pos.y,pos.x);

    float f = cos(a*10.0+smoothstep(sin(u_time)/2.0-1.0,0.984,r)*100.0+u_time);
    // f = abs(cos(a*3.));
    // f = abs(cos(a*2.5))*.5+.3;
    // f = abs(cos(a*12.)*sin(a*3.))*.8+.1;
    // f = smoothstep(-.5,1., cos(a*10.))*0.2+0.5;

    color = vec3( 1.-smoothstep(f,f+0.02,r) );

    gl_FragColor = vec4(color, 1.0);
}

#ifdef GL_ES
precision mediump float;
#endif

uniform vec2 u_resolution;
uniform vec2 u_mouse;
uniform float u_time;

vec3 colorA = vec3(0.912,0.078,0.026);
vec3 colorB = vec3(0.007,0.079,1.000);

void main() {
    vec2 st = gl_FragCoord.xy/u_resolution.xy;
    vec2 sm = u_mouse.xy/u_resolution.xy;
    vec3 color = vec3(0.0);

    color = mix(colorA, colorB, sin(st.x*50.0*(sm.x+0.2)+u_time*3.0+sm.y*7.0+sin(st.y*30.0*sm.y+sm.y*30.0))+0.5)/1.5;

    gl_FragColor = vec4(color,1.0);
}