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(() => {
const card = document.getElementById("card"),
toast = document.getElementById("toast");
const X_URL = "https://x.com/sleppyeric";
let rotY = 0,
tX = 0,
tY = 0;
let dragging = false,
sx = 0,
sy = 0,
lastX = 0,
lastT = 0,
vel = 0,
moved = 0,
spinAcc = 0;
let animId = 0,
firing = false;
const render = () => {
card.style.transform = `rotateX(${tX}deg) rotateY(${rotY + tY}deg)`;
};
const stopAnim = () => {
cancelAnimationFrame(animId);
};
function animateTo(target, speed, done) {
stopAnim();
const step = () => {
const d = target - rotY;
if (Math.abs(d) < 0.5) {
rotY = target;
render();
done && done();
return;
}
rotY += d * speed;
render();
animId = requestAnimationFrame(step);
};
step();
}
function setGlare(px, py) {
const gx = px * 100 + "%",
gy = py * 100 + "%";
for (const el of [
document.getElementById("holoF"),
document.getElementById("holoB"),
]) {
el.style.setProperty("--gx", gx);
el.style.setProperty("--gy", gy);
el.style.setProperty("--hp", gx);
}
}
setGlare(0.5, 0.42);
render();
card.addEventListener("pointerdown", (e) => {
if (firing) return;
dragging = true;
moved = 0;
spinAcc = 0;
vel = 0;
sx = lastX = e.clientX;
sy = e.clientY;
lastT = performance.now();
stopAnim();
try {
card.setPointerCapture(e.pointerId);
} catch (_) {}
});
card.addEventListener("pointermove", (e) => {
if (!dragging) return;
const dx = e.clientX - lastX;
lastX = e.clientX;
moved = Math.max(moved, Math.hypot(e.clientX - sx, e.clientY - sy));
const now = performance.now();
vel = 0.7 * vel + 0.3 * ((dx / Math.max(now - lastT, 1)) * 16);
lastT = now;
rotY += dx * 0.65;
spinAcc += Math.abs(dx * 0.65);
render();
});
function endDrag() {
if (!dragging) return;
dragging = false;
if (moved < 8) {
const target = (Math.round(rotY / 180) + 1) * 180;
animateTo(target, 0.16);
return;
}
if (spinAcc >= 355) {
fireX();
return;
}
stopAnim();
const step = () => {
if (Math.abs(vel) > 0.15) {
rotY += vel;
spinAcc += Math.abs(vel);
vel *= 0.95;
render();
if (spinAcc >= 355) {
fireX();
return;
}
animId = requestAnimationFrame(step);
} else animateTo(Math.round(rotY / 180) * 180, 0.16);
};
step();
}
card.addEventListener("pointerup", endDrag);
card.addEventListener("pointercancel", endDrag);
function fireX() {
firing = true;
toast.style.opacity = 1;
animateTo(rotY + 720, 0.09, () => {
try {
location.assign(X_URL);
} catch (_) {}
setTimeout(() => {
toast.textContent =
"(navigation blocked in preview — works when hosted)";
setTimeout(() => {
toast.style.opacity = 0;
toast.textContent = "full spin — opening X ✊";
firing = false;
animateTo(Math.round(rotY / 180) * 180, 0.16);
}, 1800);
}, 1200);
});
}
const tiltBtn = document.getElementById("tiltBtn");
function onOrient(e) {
if (e.gamma == null) return;
const g = Math.max(-30, Math.min(30, e.gamma)),
b = Math.max(-30, Math.min(30, (e.beta || 0) - 40));
tY = g * 0.4;
tX = -b * 0.3;
if (!dragging && !firing) render();
setGlare((g + 30) / 60, (b + 30) / 60);
}
if (
typeof DeviceOrientationEvent !== "undefined" &&
typeof DeviceOrientationEvent.requestPermission === "function"
) {
tiltBtn.style.display = "inline-block";
tiltBtn.addEventListener("click", () => {
DeviceOrientationEvent.requestPermission()
.then((s) => {
if (s === "granted") {
window.addEventListener("deviceorientation", onOrient);
tiltBtn.style.display = "none";
} else tiltBtn.textContent = "tilt permission denied";
})
.catch(() => {
tiltBtn.textContent = "tilt unavailable here — works when hosted";
});
});
} else if ("DeviceOrientationEvent" in window) {
window.addEventListener("deviceorientation", onOrient);
}
document.addEventListener("mousemove", (e) => {
if (dragging) return;
const r = card.getBoundingClientRect();
setGlare(
Math.min(1, Math.max(0, (e.clientX - r.left) / r.width)),
Math.min(1, Math.max(0, (e.clientY - r.top) / r.height)),
);
});
})();
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