lygia
/generative
/wavelet
)Wavelet noise https://www.shadertoy.com/view/wsBfzK
Dependencies:
Use:
<vec2> worley(<vec2|vec3> pos)
#ifndef FNC_WAVELET
#define FNC_WAVELET
float wavelet(vec2 p, float phase, float k) {
float d = 0.0, s = 1.0, m=0.0, a = 0.0;
for (float i = 0.0; i < 4.0; i++) {
vec2 q = p*s;
a = random(floor(q)) * 1e3;
#ifdef WAVELET_VORTICITY
a += phase * random(floor(q)) * WAVELET_VORTICITY;
#endif
q = (fract(q) - 0.5) * rotate2d(a);
d += sin(q.x * 10.0 + phase) * smoothstep(.25, 0.0, dot(q,q)) / s;
p = p * mat2(0.54,-0.84, 0.84, 0.54) + i;
m += 1.0 / s;
s *= k;
}
return d / m;
}
float wavelet(vec3 p, float k) {
return wavelet(p.xy, p.z, k);
}
float wavelet(vec3 p) {
return wavelet(p, 1.24);
}
float wavelet(vec2 p, float phase) {
return wavelet(p, phase, 1.24);
}
float wavelet(vec2 p) {
return wavelet(p, 0.0, 1.24);
}
#endif
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