Jerry
74 lines
2.5 KiB
JavaScript
74 lines
2.5 KiB
JavaScript
const GLSL = `
|
|
float sdBox(vec3 p, vec3 b) {
|
|
vec3 q = abs(p) - b;
|
|
return length(max(q, 0.0)) + min(max(q.x, max(q.y, q.z)), 0.0);
|
|
}
|
|
|
|
float crossVoid(vec3 p, float s) {
|
|
float w = voidWidth * s;
|
|
float tunnelX = max(abs(p.y) - w, abs(p.z) - w);
|
|
float tunnelY = max(abs(p.x) - w, abs(p.z) - w);
|
|
float tunnelZ = max(abs(p.x) - w, abs(p.y) - w);
|
|
return min(tunnelX, min(tunnelY, tunnelZ));
|
|
}
|
|
|
|
float sdf(vec3 p) {
|
|
float d = sdBox(p, vec3(size));
|
|
float v = crossVoid(p, 1.0);
|
|
if (levels > 1.5) {
|
|
vec3 q = mod(p + size * 0.5, size) - size * 0.5;
|
|
v = min(v, crossVoid(q, 0.42));
|
|
}
|
|
if (levels > 2.5) {
|
|
vec3 r = mod(p + size * 0.22, size * 0.44) - size * 0.22;
|
|
v = min(v, crossVoid(r, 0.18));
|
|
}
|
|
return max(d - roundness, -(v + roundness));
|
|
}
|
|
|
|
vec3 color(vec3 p, vec3 normal) {
|
|
float nested = 0.5 + 0.5 * sin((abs(p.x) + abs(p.y) + abs(p.z)) * 0.22);
|
|
vec3 c = mix(baseColor, accentColor, nested);
|
|
return c * (0.56 + 0.44 * pow(max(dot(normal, normalize(vec3(-0.38, 0.42, 0.82))), 0.0), 1.8));
|
|
}
|
|
`;
|
|
|
|
export default {
|
|
schema: "implicit.js/0.1.0",
|
|
name: "Jerusalem cube",
|
|
description: "A Jerusalem-cube-style fractal with nested orthogonal cutouts and rounded internal corners.",
|
|
units: "mm",
|
|
params: {
|
|
size: { type: "number", label: "Half size", min: 12, max: 34, step: 0.5, default: 24, unit: "mm" },
|
|
levels: { type: "number", label: "Levels", min: 1, max: 3, step: 1, default: 3 },
|
|
voidWidth: { type: "number", label: "Void width", min: 1.2, max: 6.5, step: 0.1, default: 3.3, unit: "mm" },
|
|
roundness: { type: "number", label: "Corner round", min: 0.05, max: 1.6, step: 0.05, default: 0.42, unit: "mm" },
|
|
baseColor: { type: "color", label: "Cube color", default: "#ffd166" },
|
|
accentColor: { type: "color", label: "Interior color", default: "#ff5c8a" }
|
|
},
|
|
animations: {
|
|
nestedCuts: {
|
|
label: "Nested cuts",
|
|
duration: 5.6,
|
|
loop: true,
|
|
update({ progress, set }) {
|
|
const wave = Math.sin(progress * Math.PI * 2);
|
|
set("voidWidth", 3.3 + wave * 1.2);
|
|
set("roundness", 0.42 + (wave * 0.5 + 0.5) * 0.55);
|
|
}
|
|
}
|
|
},
|
|
bounds: ({ params }) => {
|
|
const extent = params.size + params.roundness + 5;
|
|
return [[-extent, -extent, -extent], [extent, extent, extent]];
|
|
},
|
|
render: ({ params }) => ({
|
|
steps: 240,
|
|
stepScale: 0.64,
|
|
maxStep: Math.max(params.roundness * 5, 1.0),
|
|
epsilon: Math.max(params.roundness * 0.014, 0.004),
|
|
normalEpsilon: Math.max(params.roundness * 0.12, 0.036)
|
|
}),
|
|
glsl: GLSL
|
|
};
|