Spaces:
Sleeping
Sleeping
File size: 6,853 Bytes
627ac39 b008d9f 627ac39 b008d9f 627ac39 b008d9f 627ac39 b008d9f 627ac39 b008d9f 627ac39 b008d9f 627ac39 b008d9f 627ac39 b008d9f 627ac39 b008d9f 627ac39 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 | 'use client';
import { useEffect, useRef } from 'react';
import * as THREE from 'three';
export default function DNAHelix({ className }: { className?: string }) {
const containerRef = useRef<HTMLDivElement>(null);
useEffect(() => {
const container = containerRef.current;
if (!container) return;
const W = container.clientWidth;
const H = container.clientHeight;
const renderer = new THREE.WebGLRenderer({ antialias: true, alpha: true });
renderer.setSize(W, H);
renderer.setPixelRatio(Math.min(window.devicePixelRatio, 2));
renderer.setClearColor(0x000000, 0);
container.appendChild(renderer.domElement);
const scene = new THREE.Scene();
const camera = new THREE.PerspectiveCamera(52, W / H, 0.1, 100);
camera.position.set(0, 0, 10);
const matCyan = new THREE.MeshStandardMaterial({
color: new THREE.Color('#00F5D4'),
emissive: new THREE.Color('#00F5D4'),
emissiveIntensity: 0.25,
roughness: 0.3,
metalness: 0.6,
transparent: true,
opacity: 0.30,
});
const matPurple = new THREE.MeshStandardMaterial({
color: new THREE.Color('#8B5CF6'),
emissive: new THREE.Color('#8B5CF6'),
emissiveIntensity: 0.25,
roughness: 0.3,
metalness: 0.6,
transparent: true,
opacity: 0.30,
});
const matAmber = new THREE.MeshStandardMaterial({
color: new THREE.Color('#F59E0B'),
emissive: new THREE.Color('#F59E0B'),
emissiveIntensity: 0.15,
roughness: 0.5,
metalness: 0.3,
transparent: true,
opacity: 0.40,
});
const group = new THREE.Group();
const TURNS = 2.5;
const HEIGHT = 7.5;
const RADIUS = 1.2;
const SEGMENTS = 140;
const N_PAIRS = 20;
const pts1: THREE.Vector3[] = [];
const pts2: THREE.Vector3[] = [];
for (let i = 0; i <= SEGMENTS; i++) {
const frac = i / SEGMENTS;
const theta = frac * TURNS * Math.PI * 2;
const y = frac * HEIGHT - HEIGHT / 2;
pts1.push(new THREE.Vector3(Math.cos(theta) * RADIUS, y, Math.sin(theta) * RADIUS));
pts2.push(new THREE.Vector3(Math.cos(theta + Math.PI) * RADIUS, y, Math.sin(theta + Math.PI) * RADIUS));
}
const curve1 = new THREE.CatmullRomCurve3(pts1);
const curve2 = new THREE.CatmullRomCurve3(pts2);
group.add(new THREE.Mesh(new THREE.TubeGeometry(curve1, SEGMENTS, 0.052, 12, false), matCyan));
group.add(new THREE.Mesh(new THREE.TubeGeometry(curve2, SEGMENTS, 0.052, 12, false), matPurple));
const sphereGeo = new THREE.SphereGeometry(0.10, 20, 20);
const yAxis = new THREE.Vector3(0, 1, 0);
for (let i = 0; i < N_PAIRS; i++) {
const idx = Math.round((i / N_PAIRS) * SEGMENTS);
const p1 = pts1[idx].clone();
const p2 = pts2[idx].clone();
const dir = new THREE.Vector3().subVectors(p2, p1);
const len = dir.length();
const mid = new THREE.Vector3().addVectors(p1, p2).multiplyScalar(0.5);
const cylGeo = new THREE.CylinderGeometry(0.026, 0.026, len, 8);
const conn = new THREE.Mesh(cylGeo, matAmber);
conn.position.copy(mid);
conn.quaternion.setFromUnitVectors(yAxis, dir.normalize());
group.add(conn);
const s1 = new THREE.Mesh(sphereGeo, matCyan.clone());
s1.position.copy(p1);
const s2 = new THREE.Mesh(sphereGeo, matPurple.clone());
s2.position.copy(p2);
group.add(s1, s2);
}
scene.add(group);
const P_COUNT = 320;
const pPositions = new Float32Array(P_COUNT * 3);
const pColors = new Float32Array(P_COUNT * 3);
const cCyan = new THREE.Color('#00F5D4');
const cPurple = new THREE.Color('#8B5CF6');
for (let i = 0; i < P_COUNT; i++) {
pPositions[i * 3] = (Math.random() - 0.5) * 24;
pPositions[i * 3 + 1] = (Math.random() - 0.5) * 18;
pPositions[i * 3 + 2] = (Math.random() - 0.5) * 12 - 4;
const c = Math.random() > 0.55 ? cCyan : cPurple;
pColors[i * 3] = c.r;
pColors[i * 3 + 1] = c.g;
pColors[i * 3 + 2] = c.b;
}
const pGeo = new THREE.BufferGeometry();
pGeo.setAttribute('position', new THREE.BufferAttribute(pPositions, 3));
pGeo.setAttribute('color', new THREE.BufferAttribute(pColors, 3));
const pMat = new THREE.PointsMaterial({
size: 0.04,
vertexColors: true,
transparent: true,
opacity: 0.20,
sizeAttenuation: true,
});
const particles = new THREE.Points(pGeo, pMat);
scene.add(particles);
scene.add(new THREE.AmbientLight(0xffffff, 0.2));
const l1 = new THREE.PointLight('#00F5D4', 1.2, 25);
l1.position.set(4, 4, 5);
scene.add(l1);
const l2 = new THREE.PointLight('#8B5CF6', 1.2, 25);
l2.position.set(-4, -4, 5);
scene.add(l2);
const l3 = new THREE.PointLight('#F59E0B', 0.6, 18);
l3.position.set(0, 0, 7);
scene.add(l3);
let targetMX = 0;
let targetMY = 0;
let currentMX = 0;
let currentMY = 0;
const onMouseMove = (e: MouseEvent) => {
targetMX = (e.clientX / window.innerWidth - 0.5) * 2;
targetMY = (e.clientY / window.innerHeight - 0.5) * 2;
};
window.addEventListener('mousemove', onMouseMove);
const clock = new THREE.Clock();
let rafId: number;
const animate = () => {
rafId = requestAnimationFrame(animate);
const elapsed = clock.getElapsedTime();
currentMX += (targetMX - currentMX) * 0.04;
currentMY += (targetMY - currentMY) * 0.04;
group.rotation.y = elapsed * 0.22 + currentMX * 0.35;
group.rotation.x = currentMY * 0.08;
group.position.y = Math.sin(elapsed * 0.38) * 0.14;
const pos = pGeo.attributes.position.array as Float32Array;
for (let i = 0; i < P_COUNT; i++) {
pos[i * 3 + 1] += 0.006;
if (pos[i * 3 + 1] > 9) pos[i * 3 + 1] = -9;
}
pGeo.attributes.position.needsUpdate = true;
particles.rotation.y = elapsed * 0.03;
renderer.render(scene, camera);
};
animate();
const onResize = () => {
const nw = container.clientWidth;
const nh = container.clientHeight;
camera.aspect = nw / nh;
camera.updateProjectionMatrix();
renderer.setSize(nw, nh);
};
window.addEventListener('resize', onResize);
return () => {
cancelAnimationFrame(rafId);
window.removeEventListener('mousemove', onMouseMove);
window.removeEventListener('resize', onResize);
renderer.dispose();
if (container.contains(renderer.domElement)) {
container.removeChild(renderer.domElement);
}
};
}, []);
return <div ref={containerRef} className={className ?? 'w-full h-full'} />;
}
|