├── .gitignore
├── curl.glsl
└── package.json


/.gitignore:
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1 | node_modules
2 | 


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/curl.glsl:
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 1 | #pragma glslify: snoise = require(glsl-noise/simplex/3d)
 2 | 
 3 | vec3 snoiseVec3( vec3 x ){
 4 | 
 5 |   float s  = snoise(vec3( x ));
 6 |   float s1 = snoise(vec3( x.y - 19.1 , x.z + 33.4 , x.x + 47.2 ));
 7 |   float s2 = snoise(vec3( x.z + 74.2 , x.x - 124.5 , x.y + 99.4 ));
 8 |   vec3 c = vec3( s , s1 , s2 );
 9 |   return c;
10 | 
11 | }
12 | 
13 | 
14 | vec3 curlNoise( vec3 p ){
15 |   
16 |   const float e = .1;
17 |   vec3 dx = vec3( e   , 0.0 , 0.0 );
18 |   vec3 dy = vec3( 0.0 , e   , 0.0 );
19 |   vec3 dz = vec3( 0.0 , 0.0 , e   );
20 | 
21 |   vec3 p_x0 = snoiseVec3( p - dx );
22 |   vec3 p_x1 = snoiseVec3( p + dx );
23 |   vec3 p_y0 = snoiseVec3( p - dy );
24 |   vec3 p_y1 = snoiseVec3( p + dy );
25 |   vec3 p_z0 = snoiseVec3( p - dz );
26 |   vec3 p_z1 = snoiseVec3( p + dz );
27 | 
28 |   float x = p_y1.z - p_y0.z - p_z1.y + p_z0.y;
29 |   float y = p_z1.x - p_z0.x - p_x1.z + p_x0.z;
30 |   float z = p_x1.y - p_x0.y - p_y1.x + p_y0.x;
31 | 
32 |   const float divisor = 1.0 / ( 2.0 * e );
33 |   return normalize( vec3( x , y , z ) * divisor );
34 | 
35 | }
36 | 
37 | #pragma glslify: export(curlNoise)
38 | 


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/package.json:
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 1 | {
 2 |   "name": "glsl-curl-noise",
 3 |   "version": "0.0.3",
 4 |   "description": "curl noise",
 5 |   "main": "curl.glsl",
 6 |   "scripts": {
 7 |     "test": "echo \"Error: no test specified\" && exit 1"
 8 |   },
 9 |   "keywords": [
10 |     "curl",
11 |     "noise",
12 |     "glsl"
13 |   ],
14 |   "author": "Isaac Cohen <isaaclandoncohen@gmail.com>",
15 |   "license": "BSD",
16 |   "dependencies": {
17 |     "glsl-noise": "0.0.0"
18 |   }
19 | }
20 | 


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