gistfile1.txt

#version 150

in VertexData
{
    vec4 v_position;
    vec3 v_normal;
    vec2 v_texcoord;
} inData;

out vec4 fragColor;

////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////

uniform vec2 iResolution;
uniform float iTime;
uniform float iTimeDelta;
uniform int iFrame;
uniform vec4 iMouse;
uniform sampler2D iChannel0;
uniform sampler2D iChannel1;
uniform sampler2D iChannel2;
uniform sampler2D iChannel3;
uniform vec4 iDate;
uniform float iSampleRate;

void mainImage(out vec4, in vec2);
void main(void) { mainImage(fragColor,inData.v_texcoord * iResolution.xy); }

////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////
#define PI 3.141592
#define PI2 (PI*2.)
float fig(vec2 uv,float offset) {
    uv +=sin(iTime*(2.) +offset)*.1;
    return  step(0.01,0.02-min(0.02,abs(uv.y)));  
}
mat2 r(float a){return mat2(cos(a),sin(a),-sin(a),cos(a));}
vec3 ball(vec2 uv,float offset) {
    vec2 uuv = uv;
  
     uv.x+=sin(iTime+offset*sin(iTime))*.7;
    uv.y+=cos(iTime*4.+offset)*.1;
    uv*=15;
      uv *= r(floor(-iTime*4.));
    uv*=r(offset*cos(iTime*.6)+abs(atan(uuv.x,uuv.y)/PI)*2);
    vec2 b = vec2(1.09,1.09);
    vec2 d = abs(uv)-b;
    float di = length(max(d,0.0)) + min(max(d.x,d.y),0.0) -.001;
    di = abs(di-cos(floor(-iTime*1.))*.5);
    di = 1.-smoothstep(0.10,0.11,di);
    
    return vec3(di,di*.5*(1.-sin(floor(iTime)+uuv.y*10.)),di*.5*(1.-cos(floor(iTime)+uuv.x*10.)));
    }
vec3 master(vec2 uv,float r) {

    float d = fig(uv,0);
    float e = fig(uv,r*PI2*(1.6/6.));
    
    float f = fig(uv,r*PI2*(2.5/6.));
    float g = fig(uv,r*PI2*(3.4/6.));
    
    float h = fig(uv,r*PI2*(4.3/6.));
    float i = fig(uv,r*PI2*(5.2/6.));
    
    
    
    vec3 col = vec3(0.1);
    col.r = (d*.25+e*.5+f*.25);
    col.g = (f*.25+g*.5+h*.25);
    col.b = (h*.25+i*.5+d*25);
    return col;
}
void mainImage(out vec4 fragColor, in vec2 fragCoord)
{
    vec2 uv = (fragCoord.xy-.5*iResolution) / iResolution.y;
    //uv +=cos(iTime+uv.x*2.)*.3+.3;
    vec3 bb = vec3(0.);
    float l = 20.;
    for(int i=0;i <l;i++){
            bb += ball(uv,PI*i/l);
    }
    vec3 col = (master(uv-.35,1.) + master(uv+.35,-1.))+ bb;
  
    fragColor = vec4(col,1.0);
}