Un codice di slowlogic992

1843 slowlogic992

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Consigliato

3 November 2025

Animazione dell'albero di Natale SVG con JavaScript

30 March 2025

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const canvas = document.getElementById('network-canvas');
const ctx = canvas.getContext('2d');

canvas.width = window.innerWidth;
canvas.height = window.innerHeight;

const nodes = [];
const maxNodes = 100;
const maxDistance = 100;

class Node {
    constructor(x, y) {
        this.x = x;
        this.y = y;
        this.vx = (Math.random() - 0.5) * 2;
        this.vy = (Math.random() - 0.5) * 2;
    }

update() {
        this.x += this.vx;
        this.y += this.vy;

if (this.x < 0 || this.x > canvas.width) this.vx *= -1;
        if (this.y < 0 || this.y > canvas.height) this.vy *= -1;
    }

draw() {
        ctx.beginPath();
        ctx.arc(this.x, this.y, 2, 0, Math.PI * 2);
        ctx.fillStyle = '#00ffcc';
        ctx.fill();
    }
}

for (let i = 0; i < maxNodes; i++) {
    nodes.push(new Node(Math.random() * canvas.width, Math.random() * canvas.height));
}

function drawConnections() {
    for (let i = 0; i < nodes.length; i++) {
        for (let j = i + 1; j < nodes.length; j++) {
            const dx = nodes[i].x - nodes[j].x;
            const dy = nodes[i].y - nodes[j].y;
            const distance = Math.sqrt(dx * dx + dy * dy);

if (distance < maxDistance) {
                ctx.beginPath();
                ctx.moveTo(nodes[i].x, nodes[i].y);
                ctx.lineTo(nodes[j].x, nodes[j].y);
                ctx.strokeStyle = `rgba(0, 255, 204, ${1 - distance / maxDistance})`;
                ctx.stroke();
            }
        }
    }
}

function animate() {
    ctx.clearRect(0, 0, canvas.width, canvas.height);

for (const node of nodes) {
        node.update();
        node.draw();
    }

drawConnections();

requestAnimationFrame(animate);
}

animate();

window.addEventListener('resize', () => {
    canvas.width = window.innerWidth;
    canvas.height = window.innerHeight;
});

Consigliato

Animazione dell'albero di Natale SVG con JavaScript

Un codice di ytr3d3

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