Install
That writescompositions/components/hw-arrow.html, plus 1 supporting file under assets/fonts/.
Paste it into your composition
Opencompositions/components/hw-arrow.html and copy what is inside into your own composition.
A component has no size or duration of its own. It takes both from the composition
you paste it into.
Source
hw-arrow.html
hw-arrow.html
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8" />
<script src="https://cdn.jsdelivr.net/npm/gsap@3.14.2/dist/gsap.min.js"></script>
<style>
@font-face {
font-family: "Caveat";
src: url("assets/fonts/Caveat-700-latin.woff2") format("woff2");
font-weight: 700;
font-display: block;
}
*,
*::before,
*::after {
margin: 0;
padding: 0;
box-sizing: border-box;
}
body {
background: transparent;
overflow: hidden;
}
/* ---- hw-arrow ------------------------------------------------------
Hand-wobbled draw-on arrow, boiling. Position the wrapper, pick a
curve preset, call the helpers. Requires the hw-boil helpers
(hwOnUpdate / hwHash / hwBoil) in the host script. */
.hw-arrow {
position: absolute;
pointer-events: none;
}
.hw-arrow svg {
width: 100%;
height: 100%;
overflow: visible;
}
.hw-arrow path {
fill: none;
stroke: var(--hw-arrow-color, var(--hw-ink, #f4f2ec));
stroke-width: var(--hw-arrow-w, 6);
stroke-linecap: round;
stroke-linejoin: round;
}
.hw-arrow.hw-soft path {
filter: blur(0.6px);
}
/* self-preview scene */
#hw-ar-scene {
position: absolute;
inset: 0;
background: linear-gradient(135deg, #274060 0%, #123 100%);
display: flex;
align-items: center;
justify-content: center;
font-family: var(--hw-font-print, "Caveat", cursive);
font-weight: 700;
font-size: 80px;
color: rgba(244, 242, 236, 0.92);
}
</style>
</head>
<body>
<!-- Self-preview. WIRING: copy the .hw-arrow CSS, the markup pattern,
and the hwArrowPath / hwArrowOn / hwArrowOff helpers (plus the
hw-boil helpers) into your host. Then:
document.querySelector("#hw-my-arrow path")
.setAttribute("d", hwArrowPath(360, 160, "swoop", 3));
hwArrowOn(tl, "#hw-my-arrow", 2.0);
hwBoil(tl, "#hw-my-arrow", { frameDrop: 3, seed: 3 });
hwArrowOff(tl, "#hw-my-arrow", 8.0);
-->
<div
id="hw-ar-root"
data-composition-id="hw-arrow"
data-start="0"
data-duration="4"
data-width="1920"
data-height="1080"
>
<div id="hw-ar-scene"><span>point at things</span></div>
<div
class="hw-arrow"
id="hw-ar-demo"
style="left: 560px; top: 320px; width: 380px; height: 180px"
>
<svg viewBox="0 0 380 180"><path id="hw-ar-demo-path"></path></svg>
</div>
<div
id="hw-ar-drv"
class="clip"
data-start="0"
data-duration="4"
data-track-index="0"
style="position: absolute; width: 1px; height: 1px; opacity: 0; pointer-events: none"
></div>
</div>
<script>
(function () {
window.__timelines = window.__timelines || {};
/* ---- hw-boil helpers (shared family runtime — copy once per host) ---- */
window.hwOnUpdate = function (tl, fn) {
if (!tl.__hwRenders) {
tl.__hwRenders = [];
tl.eventCallback("onUpdate", function () {
for (var i = 0; i < tl.__hwRenders.length; i++) tl.__hwRenders[i]();
});
}
tl.__hwRenders.push(fn);
fn();
};
window.hwHash = function (n, seed) {
var x = Math.sin(n * 127.1 + (seed || 1) * 311.7) * 43758.5453;
return (x - Math.floor(x)) * 2 - 1;
};
window.hwBoil = function (tl, target, opts) {
opts = opts || {};
var amp = opts.amp !== undefined ? opts.amp : 1.6;
var rot = opts.rot !== undefined ? opts.rot : 0.5;
var fps = opts.fps || 30;
var drop = opts.frameDrop || 3;
var seed = opts.seed || 1;
var els = gsap.utils.toArray(target);
window.hwOnUpdate(tl, function () {
var step = Math.floor((tl.time() * fps) / drop);
for (var i = 0; i < els.length; i++) {
gsap.set(els[i], {
x: window.hwHash(step * 3 + i * 97, seed) * amp,
y: window.hwHash(step * 3 + 1 + i * 97, seed) * amp,
rotation: (opts.baseRot || 0) + window.hwHash(step * 3 + 2 + i * 97, seed) * rot,
});
}
});
};
// ---- hw-arrow helpers (copy these too) ----
// Wobbled arrow path in a w x h box, tail at left, head at right.
// curve: "straight" | "gentle" | "swoop"
window.hwArrowPath = function (w, h, curve, seed) {
seed = seed || 1;
var bend = curve === "swoop" ? 0.55 : curve === "gentle" ? 0.28 : 0.06;
function wob(v, n, range) {
return v + window.hwHash(n, seed) * range;
}
var x0 = wob(4, 1, 3),
y0 = wob(h * 0.72, 2, 4),
x1 = wob(w - 10, 3, 4),
y1 = wob(h * 0.3, 4, 4);
var cx1 = wob(w * 0.35, 5, 10),
cy1 = wob(h * (0.72 + bend * 0.5), 6, 8);
var cx2 = wob(w * 0.7, 7, 10),
cy2 = wob(h * (0.3 + bend), 8, 8);
var ang = Math.atan2(y1 - cy2, x1 - cx2);
function head(da, len) {
var a = ang + Math.PI + da;
return (
"M " +
x1.toFixed(1) +
" " +
y1.toFixed(1) +
" l " +
(Math.cos(a) * len).toFixed(1) +
" " +
(Math.sin(a) * len).toFixed(1)
);
}
return (
"M " +
x0.toFixed(1) +
" " +
y0.toFixed(1) +
" C " +
cx1.toFixed(1) +
" " +
cy1.toFixed(1) +
", " +
cx2.toFixed(1) +
" " +
cy2.toFixed(1) +
", " +
x1.toFixed(1) +
" " +
y1.toFixed(1) +
" " +
head(0.5, wob(34, 9, 6)) +
" " +
head(-0.5, wob(34, 10, 6))
);
};
window.hwArrowOn = function (tl, target, at, dur) {
var p = document.querySelector(target + " path");
var len = p.getTotalLength();
gsap.set(p, { strokeDasharray: len, strokeDashoffset: len });
tl.to(
p,
{ strokeDashoffset: 0, duration: dur === undefined ? 0.7 : dur, ease: "power2.inOut" },
at,
);
};
window.hwArrowOff = function (tl, target, at) {
tl.to(target, { opacity: 0, duration: 0.3, ease: "power2.in" }, at);
};
// ---- self-preview ----
document
.getElementById("hw-ar-demo-path")
.setAttribute("d", window.hwArrowPath(380, 180, "swoop", 7));
var tl = gsap.timeline({ paused: true });
window.hwArrowOn(tl, "#hw-ar-demo", 0.4);
window.hwBoil(tl, "#hw-ar-demo", { amp: 2, rot: 0.6, frameDrop: 3, seed: 7 });
window.hwArrowOff(tl, "#hw-ar-demo", 3.4);
tl.set("#hw-ar-root", { visibility: "hidden" }, 3.98);
window.__timelines["hw-arrow"] = tl;
})();
</script>
</body>
</html>
handwritten annotation arrow overlay.