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tangram-procedural-textures pattern glsl runnable fragment MIT

code snippet

precision mediump float;
uniform float u_time;
varying vec2 v_texcoord;
#define PI 3.14159265358979323846
#define TWO_PI 6.28318530717958647693
#define PHI 1.618033988749894848204586834

vec2 radialTile(vec2 _st, vec2 _vel, float _zoom){
  vec2 toExtreme = vec2(0.5)-_st;
  vec2 polar = vec2( (PI+atan(toExtreme.y,toExtreme.x))/TWO_PI,   // Angle
                      log(length(toExtreme))*PHI*0.1);            // Radius
  polar *= _zoom;

  polar.y += _vel.y;

runnable fragment

Star.fs

vidvox-isf-files utility glsl runnable fragment MIT

code snippet

uniform float size;
uniform float bordersize;
uniform vec4 color1;
uniform vec4 color2;
precision mediump float;
/*{
    "CATEGORIES": [
        "Geometry"
    ],
    "CREDIT": "by VIDVOX",
    "INPUTS": [
        {
            "DEFAULT": 0.25,
            "LABEL": "Size",