81 lines
2.3 KiB
JavaScript
81 lines
2.3 KiB
JavaScript
// Bratonien Glitter Hover Effekt – feiner, rieselnder Staub
|
||
document.querySelectorAll(".door").forEach(door => {
|
||
let canvas, ctx, particles = [], anim, hovering = false;
|
||
|
||
// Canvas vorbereiten
|
||
function setupCanvas() {
|
||
if (canvas) return;
|
||
canvas = document.createElement("canvas");
|
||
canvas.width = door.offsetWidth * 1.4;
|
||
canvas.height = door.offsetHeight * 1.4;
|
||
canvas.style.position = "absolute";
|
||
canvas.style.top = "-20%";
|
||
canvas.style.left = "-20%";
|
||
canvas.style.pointerEvents = "none";
|
||
canvas.style.zIndex = "10";
|
||
door.appendChild(canvas);
|
||
ctx = canvas.getContext("2d");
|
||
}
|
||
|
||
// Neue Partikel erzeugen (feiner, sanfter)
|
||
function addParticles() {
|
||
for (let i = 0; i < 3; i++) {
|
||
particles.push({
|
||
x: Math.random() * canvas.width,
|
||
y: -5, // startet oben, rieselt nach unten
|
||
r: Math.random() * 0.8 + 0.2,
|
||
alpha: Math.random() * 0.6 + 0.3,
|
||
vx: (Math.random() - 0.5) * 0.2, // leichtes Driften
|
||
vy: Math.random() * 0.6 + 0.3, // nach unten
|
||
life: Math.random() * 200 + 80
|
||
});
|
||
}
|
||
}
|
||
|
||
// Zeichnen und Bewegung
|
||
function draw() {
|
||
ctx.clearRect(0, 0, canvas.width, canvas.height);
|
||
|
||
if (hovering) addParticles();
|
||
|
||
particles.forEach(p => {
|
||
ctx.beginPath();
|
||
const grad = ctx.createRadialGradient(p.x, p.y, 0, p.x, p.y, p.r * 3);
|
||
grad.addColorStop(0, `rgba(255, 235, 160, ${p.alpha})`);
|
||
grad.addColorStop(0.3, `rgba(255, 220, 120, ${p.alpha * 0.8})`);
|
||
grad.addColorStop(1, "transparent");
|
||
ctx.fillStyle = grad;
|
||
ctx.arc(p.x, p.y, p.r * 3, 0, Math.PI * 2);
|
||
ctx.fill();
|
||
|
||
// Bewegung – feines Rieseln
|
||
p.x += p.vx;
|
||
p.y += p.vy;
|
||
p.alpha -= 0.002;
|
||
p.life--;
|
||
});
|
||
|
||
particles = particles.filter(p => p.life > 0 && p.y < canvas.height && p.alpha > 0);
|
||
anim = requestAnimationFrame(draw);
|
||
}
|
||
|
||
// Hover starten
|
||
door.addEventListener("mouseenter", () => {
|
||
setupCanvas();
|
||
hovering = true;
|
||
cancelAnimationFrame(anim);
|
||
draw();
|
||
});
|
||
|
||
// Hover beenden
|
||
door.addEventListener("mouseleave", () => {
|
||
hovering = false;
|
||
setTimeout(() => {
|
||
if (!hovering) {
|
||
cancelAnimationFrame(anim);
|
||
particles = [];
|
||
ctx.clearRect(0, 0, canvas.width, canvas.height);
|
||
}
|
||
}, 300);
|
||
});
|
||
}); |