Shared memory and context tools for agentic work.
Code Rooms
import { useRef, useMemo } from "react";
import { useFrame } from "@react-three/fiber";
import * as THREE from "three";
export function StarField({ count = 2000, radius = 25 }) {
const mesh = useRef<THREE.InstancedMesh>(null);
const dummy = useMemo(() => new THREE.Object3D(), []);
const particles = useMemo(() => {
const temp = [];
for (let i = 0; i < count; i++) {
const r = radius * Math.cbrt(Math.random());
const theta = Math.random() * 2 * Math.PI;
const phi = Math.acos(2 * Math.random() - 1);
const x = r * Math.sin(phi) * Math.cos(theta);
const y = r * Math.sin(phi) * Math.sin(theta);
const z = r * Math.cos(phi);
const factor = Math.random();
const speed = 0.01 + Math.random() / 200;
temp.push({ t: factor, factor, speed, x, y, z });
}
return temp;
}, [count, radius]);
useFrame(() => {
if (!mesh.current) return;
particles.forEach((particle, i) => {
let { t, factor, speed, x, y, z } = particle;
t = particle.t += speed / 2;
const a = Math.cos(t) + Math.sin(t * 1) / 10;
const b = Math.sin(t) + Math.cos(t * 2) / 10;
const s = Math.cos(t);
dummy.position.set(
x + Math.cos((t / 10) * factor) + (Math.sin(t * 1) * factor) / 10,
y + Math.sin((t / 10) * factor) + (Math.cos(t * 2) * factor) / 10,
z + Math.cos((t / 10) * factor) + (Math.sin(t * 3) * factor) / 10
);
const scaleScale = 0.02 + Math.max(0, s) * 0.05;
dummy.scale.set(scaleScale, scaleScale, scaleScale);
dummy.rotation.set(s * 5, s * 5, s * 5);
dummy.updateMatrix();
mesh.current!.setMatrixAt(i, dummy.matrix);
});
mesh.current.instanceMatrix.needsUpdate = true;
return (
<instancedMesh ref={mesh} args={[undefined, undefined, count]}>
<sphereGeometry args={[1, 8, 8]} />
<meshBasicMaterial color="#e8eaf6" transparent opacity={0.4} />
</instancedMesh>
