spiral_calendar/view/graphics.js

import * as THREE from 'three';
import { OrbitControls } from 'three/addons/controls/OrbitControls.js';

const spiralHeight = 2;

let spiralMaterial = new THREE.MeshPhongMaterial({color: 0xffffff});
 // calculating segment geometry
let pointsOfCurve = [];
const number = 100;
for (let i = 0; i <= number; i ++) {
    let p = i / number;

    let x = Math.cos(p * 2 * Math.PI);
    let y = p * spiralHeight;
    let z = Math.sin(p * 2 * Math.PI);

    pointsOfCurve.push(new THREE.Vector3(x, y, z));
}

let curve = new THREE.CatmullRomCurve3(pointsOfCurve);
let curveGeometry = new THREE.TubeGeometry(curve, 400, 0.1, 400, false);

class SpiralSegment {
    constructor(number) {
        this.number = number;
        let color = (Math.floor(Math.random() * 16777215)).toString(16);
        console.log(color +`Y: ${number * spiralHeight}`);
        this.segment = new THREE.Mesh(curveGeometry, new THREE.MeshPhongMaterial({color: `#${color}`}));
        this.segment.position.y += number * spiralHeight;
        scene.add(this.segment);
    }
}

const scene = new THREE.Scene();

var canvas = document.querySelector('#canvas');
const renderer = new THREE.WebGLRenderer({ antialias: true, canvas });
document.body.appendChild( renderer.domElement );

const camera = new THREE.PerspectiveCamera(75, canvas.clientWidth / canvas.clientHeight, 0.1, 1000);
camera.position.z = 5;

const controls = new OrbitControls( camera, renderer.domElement );
controls.update();

// setting light
const pointLight = new THREE.PointLight( 0xffffff, 1);
pointLight.position.set( 0, 0, 1 );

const ambientLight = new THREE.AmbientLight(0xffffff, 10);

scene.add(pointLight);
scene.add(ambientLight);

let segments = []

for (let i = -10; i < 10; i ++) {
    segments.push(new SpiralSegment(i));
}

//main loop
function animate() {
    if (resizeRendererToDisplaySize(renderer)) {
        const canvas = renderer.domElement;
        camera.aspect = canvas.clientWidth / canvas.clientHeight;
        camera.updateProjectionMatrix();
    }

    controls.update();
    renderer.render(scene, camera);

    requestAnimationFrame(animate);

    
}

function resizeRendererToDisplaySize(renderer) {
    const canvas = renderer.domElement;
    const width = canvas.clientWidth;
    const height = canvas.clientHeight;

    const needResize = canvas.width !== width || canvas.height !== height;
    if (needResize) renderer.setSize(width, height, false);

    return needResize;
}

animate();