https://noteworthy.app/assets/built/chunks/void-B98NNc4H.js

1import{c as g,u as i,s as n,b as y,a as r}from"./helpers-CxDxNF8W.js";var p=`
2precision highp float;
3
4uniform vec2 u_resolution;
5uniform float u_time;
6uniform float u_speed;
7uniform float u_size;
8uniform vec2 u_position;
9uniform vec3 u_baseColor;
10uniform vec3 u_accent;
11uniform vec3 u_highlight;
12uniform float u_vignetteStrength;
13uniform float u_vignetteMin;
14uniform float u_vignetteRange;
15
16vec3 mod289(vec3 x) {
17	return x - floor(x * (1.0 / 289.0)) * 289.0;
18}
19
20vec4 mod289(vec4 x) {
21	return x - floor(x * (1.0 / 289.0)) * 289.0;
22}
23
24vec4 permute(vec4 x) {
25	return mod289(((x * 34.0) + 1.0) * x);
26}
27
28vec4 taylorInvSqrt(vec4 r) {
29	return 1.79284291400159 - 0.85373472095314 * r;
30}
31
32float snoise(vec3 v) {
33	const vec2 C = vec2(1.0 / 6.0, 1.0 / 3.0);
34	const vec4 D = vec4(0.0, 0.5, 1.0, 2.0);
35
36	vec3 i = floor(v + dot(v, C.yyy));
37	vec3 x0 = v - i + dot(i, C.xxx);
38
39	vec3 g = step(x0.yzx, x0.xyz);
40	vec3 l = 1.0 - g;
41	vec3 i1 = min(g.xyz, l.zxy);
42	vec3 i2 = max(g.xyz, l.zxy);
43
44	vec3 x1 = x0 - i1 + C.xxx;
45	vec3 x2 = x0 - i2 + C.yyy;
46	vec3 x3 = x0 - D.yyy;
47
48	i = mod289(i);
49	vec4 p = permute(permute(permute(
50		i.z + vec4(0.0, i1.z, i2.z, 1.0))
51		+ i.y + vec4(0.0, i1.y, i2.y, 1.0))
52		+ i.x + vec4(0.0, i1.x, i2.x, 1.0));
53
54	float n_ = 0.142857142857;
55	vec3 ns = n_ * D.wyz - D.xzx;
56
57	vec4 j = p - 49.0 * floor(p * ns.z * ns.z);
58
59	vec4 x_ = floor(j * ns.z);
60	vec4 y_ = floor(j - 7.0 * x_);
61
62	vec4 x = x_ * ns.x + ns.yyyy;
63	vec4 y = y_ * ns.x + ns.yyyy;
64	vec4 h = 1.0 - abs(x) - abs(y);
65
66	vec4 b0 = vec4(x.xy, y.xy);
67	vec4 b1 = vec4(x.zw, y.zw);
68
69	vec4 s0 = floor(b0) * 2.0 + 1.0;
70	vec4 s1 = floor(b1) * 2.0 + 1.0;
71	vec4 sh = -step(h, vec4(0.0));
72
73	vec4 a0 = b0.xzyw + s0.xzyw * sh.xxyy;
74	vec4 a1 = b1.xzyw + s1.xzyw * sh.zzww;
75
76	vec3 p0 = vec3(a0.xy, h.x);
77	vec3 p1 = vec3(a0.zw, h.y);
78	vec3 p2 = vec3(a1.xy, h.z);
79	vec3 p3 = vec3(a1.zw, h.w);
80
81	vec4 norm = taylorInvSqrt(vec4(dot(p0, p0), dot(p1, p1), dot(p2, p2), dot(p3, p3)));
82	p0 *= norm.x;
83	p1 *= norm.y;
84	p2 *= norm.z;
85	p3 *= norm.w;
86
87	vec4 m = max(0.6 - vec4(dot(x0, x0), dot(x1, x1), dot(x2, x2), dot(x3, x3)), 0.0);
88	m = m * m;
89	return 42.0 * dot(m * m, vec4(dot(p0, x0), dot(p1, x1), dot(p2, x2), dot(p3, x3)));
90}
91
92float fbm3d(vec3 x, const int iterations) {
93	float value = 0.0;
94	float amplitude = 0.5;
95	vec3 shift = vec3(100.0);
96
97	for (int i = 0; i < 32; i++) {
98		if (i < iterations) {
99			value += amplitude * snoise(x);
100			x = x * 2.0 + shift;
101			amplitude *= 0.5;
102		}
103	}
104
105	return value;
106}
107
108void main() {
109	float animTime = u_time * u_speed * 0.2;
110	vec2 offset = u_position * u_resolution.xy;
111	vec2 uv = (gl_FragCoord.xy - 0.5 * u_resolution.xy + offset) / u_resolution.y;
112	vec2 st = vec2(length(uv) / u_size, atan(uv.y, uv.x));
113
114	st.y += st.x * 1.1;
115
116	float x = fbm3d(vec3(sin(st.y), cos(st.y), pow(st.x, 0.3) + animTime * 0.1), 3);
117	float y = fbm3d(vec3(cos(1.0 - st.y), sin(1.0 - st.y), pow(st.x, 0.5) + animTime * 0.1), 4);
118
119	float r = fbm3d(vec3(x, y, st.x + animTime * 0.3), 5);
120	r = fbm3d(vec3(r - x, r - y, r + animTime * 0.3), 6);
121
122	float tone = (r + st.x * 5.0) / 6.0;
123	vec3 ringShape = vec3(
124		smoothstep(0.3, 0.4, tone),
125		smoothstep(0.4, 0.55, tone),
126		smoothstep(0.2, 0.55, tone)
127	);
128	float ringLuma = dot(ringShape, vec3(0.299, 0.587, 0.114));
129	float pinkLuma = dot(u_accent, vec3(0.299, 0.587, 0.114));
130	vec3 pinkChroma = u_accent / max(pinkLuma, 1e-3);
131	vec3 ringColor = mix(pinkChroma * ringLuma, u_highlight, smoothstep(0.55, 0.92, ringLuma));
132
133	float ringMask = smoothstep(0.28, 0.38, tone) * (1.0 - smoothstep(0.5, 0.66, tone));
134	float outerFade = 1.0 - smoothstep(1.4, 2.8, length(uv));
135	vec3 color = mix(u_baseColor, ringColor, ringMask * outerFade);
136
137	vec2 vignetteUv = (gl_FragCoord.xy - 0.5 * u_resolution.xy) / min(u_resolution.x, u_resolution.y);
138	float vignette = 1.0 - dot(vignetteUv * u_vignetteStrength, vignetteUv * u_vignetteStrength);
139	color *= u_vignetteMin + vignette * u_vignetteRange;
140
141
142	gl_FragColor = vec4(color, 1.0);
143}
144`;function f(e,o,h,c,_,{config:a}={}){const{primary:x,secondary:u,background:m}=c,t=g(e,o),{animation:l,hole:s,vignette:v}=a;return t.speed=i(e,o,"u_speed"),t.size=i(e,o,"u_size"),t.position=i(e,o,"u_position"),t.baseColor=i(e,o,"u_baseColor"),t.accent=i(e,o,"u_accent"),t.highlight=i(e,o,"u_highlight"),t.vignetteStrength=i(e,o,"u_vignetteStrength"),t.vignetteMin=i(e,o,"u_vignetteMin"),t.vignetteRange=i(e,o,"u_vignetteRange"),n(e,t.speed,l.speed),n(e,t.size,s.size),y(e,t.position,s.position),r(e,t.baseColor,m),r(e,t.accent,x),r(e,t.highlight,u),n(e,t.vignetteStrength,v.strength),n(e,t.vignetteMin,v.minBrightness),n(e,t.vignetteRange,v.range),t}export{p as default,f as setupVoidUniforms};