> ## Documentation Index
> Fetch the complete documentation index at: https://hyperframes-magi-fix-nested-media-time.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Scribble Callout Circle

> Wobbled ellipse draws around a target with optional scribble fill and curved connector; the handwritten label pops in WITH momentum and the drawn shapes absorb the arrival with a volume-preserving contact squash; outline and connector take the family stroke matrix (plain/soft/sharp/spray); boils

export const InstallCommand = ({command, item}) => {
  const [copied, setCopied] = React.useState(false);
  const [tuned, setTuned] = React.useState("");
  React.useEffect(() => {
    if (!item) return;
    const read = () => {
      try {
        const raw = new URLSearchParams(window.location.search).get(`vars-${item}`);
        if (!raw) return setTuned("");
        const parsed = JSON.parse(raw);
        if (!parsed || typeof parsed !== "object" || Array.isArray(parsed)) return setTuned("");
        if (Object.keys(parsed).length === 0) return setTuned("");
        setTuned(` --vars '${JSON.stringify(parsed)}'`);
      } catch {
        setTuned("");
      }
    };
    read();
    window.addEventListener("hf-vars-changed", read);
    window.addEventListener("popstate", read);
    return () => {
      window.removeEventListener("hf-vars-changed", read);
      window.removeEventListener("popstate", read);
    };
  }, [item]);
  const fullCommand = `${command}${tuned}`;
  const copy = async () => {
    try {
      if (navigator.clipboard && window.isSecureContext) {
        await navigator.clipboard.writeText(fullCommand);
      } else {
        const previous = document.activeElement;
        const scratch = document.createElement("textarea");
        scratch.value = fullCommand;
        scratch.setAttribute("readonly", "");
        scratch.style.position = "fixed";
        scratch.style.opacity = "0";
        document.body.appendChild(scratch);
        scratch.select();
        document.execCommand("copy");
        document.body.removeChild(scratch);
        previous?.focus?.();
      }
      setCopied(true);
      setTimeout(() => setCopied(false), 2000);
    } catch {}
  };
  return <div className="hf-install-command not-prose my-4 flex items-stretch overflow-hidden rounded-xl border border-zinc-200 bg-zinc-50 dark:border-zinc-800 dark:bg-zinc-900">
      <code className="flex-1 overflow-x-auto whitespace-nowrap border-r border-zinc-200 px-4 py-3 font-mono text-sm text-zinc-800 dark:border-zinc-800 dark:text-zinc-100">
        {fullCommand}
      </code>
      <button type="button" onClick={copy} data-copied={copied ? "true" : "false"} aria-label={`Copy ${command} to the clipboard`} className="hf-install-copy">
        <svg className="hf-install-copy-clipboard" xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 18 18" fill="none" stroke="currentColor" strokeWidth="1.5" strokeLinecap="round" strokeLinejoin="round" aria-hidden="true">
          <path d="M14.25 5.25H7.25C6.14543 5.25 5.25 6.14543 5.25 7.25V14.25C5.25 15.3546 6.14543 16.25 7.25 16.25H14.25C15.3546 16.25 16.25 15.3546 16.25 14.25V7.25C16.25 6.14543 15.3546 5.25 14.25 5.25Z" />
          <path d="M2.80103 11.998L1.77203 5.07397C1.61003 3.98097 2.36403 2.96397 3.45603 2.80197L10.38 1.77297C11.313 1.63397 12.19 2.16297 12.528 3.00097" />
        </svg>
        <svg className="hf-install-copy-check" xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 18 18" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round" aria-hidden="true">
          <path d="M2.75 9.5L6.5 13.25L15.25 4.5" />
        </svg>
      </button>
      <span className="hf-install-copy-status" role="status" aria-live="polite">
        {copied ? "Copied" : ""}
      </span>
    </div>;
};

<iframe className="w-full aspect-video rounded-xl border-0 bg-zinc-100 dark:bg-zinc-800" title="hw-callout-circle preview" loading="lazy" srcDoc={`<!doctype html><html><head><meta charset="utf-8"><style>html,body{margin:0;height:100%;overflow:hidden;background:transparent}hyperframes-player{display:block;width:100%;height:100%}</style><script src="https://cdn.jsdelivr.net/npm/@hyperframes/player@latest/dist/hyperframes-player.global.js"><\/script></head><body><script>fetch("/public/catalog/components/hw-callout-circle.json").then(function(r){return r.json()}).then(function(d){var p=document.createElement("hyperframes-player");p.setAttribute("srcdoc",d.html);p.setAttribute("controls","");p.setAttribute("autoplay","");p.setAttribute("loop","");p.setAttribute("muted","");p.setAttribute("poster","https://static.heygen.ai/hyperframes-oss/docs/images/catalog/components/hw-callout-circle.png");document.body.appendChild(p)});<\/script></body></html>`} />

## Install

<InstallCommand command="npx hyperframes add hw-callout-circle" item="hw-callout-circle" />

That writes `compositions/components/hw-callout-circle.html`, plus 1 supporting file under `assets/fonts/`.

## Paste it into your composition

Open `compositions/components/hw-callout-circle.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

<Accordion title={`hw-callout-circle.html`}>
  ```html theme={null}
  <!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-callout-circle ----------------------------------------------
           The full callout anatomy: wobbled ellipse outline draws around a
           target, optional scribble fill sketches in, a curved connector leads
           to a handwritten label that POPS in with momentum — the drawn shapes
           absorb the arrival with a volume-preserving contact squash (g21).
           Ships the full family runtime it needs (hw-boil + boil poses +
           stroke matrix + springEase) — copy the helpers once per host.
           WRAPPER RULES: boil owns x/y/rotation of .hw-co-boil; the squash
           deforms .hw-co-deform (outline + scribble only); the label rides
           the uniform-scale .hw-co-pop OUTSIDE the deform — non-uniform
           scale never reaches glyphs. One timeline has ONE onUpdate
           (everything registers through hwOnUpdate). */
        .hw-callout {
          position: absolute;
          pointer-events: none;
        }
        .hw-callout .hw-co-boil,
        .hw-callout .hw-co-deform,
        .hw-callout .hw-co-conn-layer,
        .hw-callout .hw-co-pop {
          position: absolute;
          inset: 0;
        }
        .hw-callout .hw-co-pop {
          opacity: 0;
        }
        .hw-callout svg {
          width: 100%;
          height: 100%;
          overflow: visible;
        }
        .hw-callout path {
          fill: none;
          stroke-linecap: round;
          stroke-linejoin: round;
        }
        .hw-callout .hw-co-outline {
          stroke: var(--hw-co-ink, var(--hw-ink, #f4f2ec));
          stroke-width: var(--hw-co-w, 6);
        }
        .hw-callout .hw-co-scribble {
          /* Warm marker accent to match hw-frame / hw-title / hw-underline; the
             previous blue read as a default UI colour. Lighter weight and alpha
             so the hatch sits behind the labelled subject instead of over it. */
          stroke: var(--hw-co-accent, var(--hw-accent, #ffb020));
          stroke-width: 3;
          opacity: 0.42;
        }
        .hw-callout .hw-co-connector {
          stroke: var(--hw-co-ink, var(--hw-ink, #f4f2ec));
          stroke-width: 4;
        }
        .hw-callout .hw-co-label {
          position: absolute;
          font-family: var(--hw-font-print, "Caveat", cursive);
          font-weight: 700;
          font-size: 54px;
          color: var(--hw-co-ink, var(--hw-ink, #f4f2ec));
          white-space: nowrap;
          text-shadow: 0 2px 14px rgba(0, 0, 0, 0.45);
        }
        /* self-preview scene */
        #hw-co-scene {
          position: absolute;
          inset: 0;
          background: linear-gradient(150deg, #35604a 0%, #14231c 100%);
        }
        #hw-co-target {
          position: absolute;
          left: 700px;
          top: 420px;
          width: 220px;
          height: 150px;
          border-radius: 18px;
          background: rgba(244, 242, 236, 0.18);
          display: flex;
          align-items: center;
          justify-content: center;
          font-family: "Inter", ui-sans-serif, sans-serif;
          font-weight: 600;
          font-size: 30px;
          color: rgba(244, 242, 236, 0.8);
        }
      </style>
    </head>
    <body>
      <!-- Self-preview. WIRING: copy the .hw-callout CSS + markup pattern (the
           boil / deform / conn-layer / pop wrapper stack is REQUIRED — boil
           owns x/y/rotation, the squash owns the deform, the label pops on
           .hw-co-pop) and ALL helpers below. Size the wrapper around your
           target, then:

             hwCalloutBuild("#hw-my-callout", { scribble: true, seed: 4,
               label: "look here!", labelAt: "right",
               strokeType: "plain", boil: "calm" });
             hwCalloutOn(tl, "#hw-my-callout", 2.0);
             hwCalloutOff(tl, "#hw-my-callout", 8.0);

           hwCalloutOn applies the boil pose internally — do NOT add a host
           hwBoil call on the callout (it would double-boil).
      -->
      <div
        id="hw-co-root"
        data-composition-id="hw-callout-circle"
        data-start="0"
        data-duration="4"
        data-width="1920"
        data-height="1080"
      >
        <div id="hw-co-scene"></div>
        <div id="hw-co-target">subject</div>
        <div
          class="hw-callout"
          id="hw-co-demo"
          style="left: 640px; top: 370px; width: 340px; height: 250px"
        >
          <div class="hw-co-boil">
            <div class="hw-co-deform">
              <svg viewBox="0 0 340 250">
                <path class="hw-co-scribble" id="hw-co-demo-scribble"></path>
                <path class="hw-co-outline" id="hw-co-demo-outline"></path>
              </svg>
            </div>
            <svg class="hw-co-conn-layer" viewBox="0 0 340 250">
              <path class="hw-co-connector" id="hw-co-demo-connector"></path>
            </svg>
            <div class="hw-co-pop">
              <!-- labels intentionally hang outside the wrapper box -->
              <div class="hw-co-label" id="hw-co-demo-label" data-layout-allow-overflow></div>
            </div>
          </div>
        </div>
        <div
          id="hw-co-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 || {};

          var CONFIG = {
            // ── Content (freely editable — not counted) ─────────────────────
            label: "look here!",
            scribble: true, //  which anatomy pieces exist (content, not a feel lever)
            connector: true, // (connector: false also suppresses the label anchor)

            // ── Controls (family base + 2 item-specific; comment grammar is the published-parameter list) ──
            labelAt: "right", //    variant: "left" | "right" | "below" — connector start point, sweep direction + label anchor pose (6 geometry params)
            strokeType: "plain", // variant: "plain" | "soft" | "sharp" | "spray" — outline + connector stroke texture (authored constants per type); the scribble fill stays plain — texture-on-texture reads as mud
            boil: "calm", //        variant: "off" | "calm" | "lively" — authored amp/rot pairs over the family-locked frameDrop 3; seed locked

            // ── Locked (edit the item source to change) ─────────────────────
            // draw durations/eases, pop ease + contact-squash constants
            // (softness 0.08 light-drawn-line tier, snappy recovery),
            // stroke-type constants, boil pose tables, seeds
          };
          var SEED = 4; // locked — determinism (hosts pass a distinct seed per callout instance)

          /* ---- 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,
                });
              }
            });
          };
          // boil control: authored poses over the family-locked frameDrop.
          // Unknown pose → default + console error (bounded-controls law).
          window.hwBoilPose = function (tl, target, pose, opts) {
            opts = opts || {};
            var poses = { calm: { amp: 1.6, rot: 0.5 }, lively: { amp: 2.6, rot: 0.9 } };
            if (pose === "off") return;
            var p = poses[pose];
            if (!p) {
              console.error('hw: unknown boil pose "' + pose + '" — falling back to "calm"');
              p = poses.calm;
            }
            window.hwBoil(tl, target, { amp: p.amp, rot: p.rot, frameDrop: 3, seed: opts.seed || 1 });
          };
          /* ---- spring library (spring-lab, validated 2026-08-04 — verbatim) ---- */
          var LN1000 = Math.log(1000);
          var FEELS = {
            snappy: { zeta: 0.9, response: 0.22 },
            "heavy-settle": { zeta: 1.0, response: 0.8 },
            bouncy: { zeta: 0.5, response: 0.4 },
            wobbly: { zeta: 0.28, response: 0.5 },
          };
          window.springEase = function (opts) {
            var f = opts.feel ? FEELS[opts.feel] : opts;
            var zeta = f.zeta,
              response = f.response;
            var w0 = (2 * Math.PI) / response;
            var T = LN1000 / (zeta * w0);
            var x;
            if (zeta < 1) {
              var wd = w0 * Math.sqrt(1 - zeta * zeta);
              x = function (t) {
                return (
                  1 -
                  Math.exp(-zeta * w0 * t) *
                    (Math.cos(wd * t) + ((zeta * w0) / wd) * Math.sin(wd * t))
                );
              };
            } else {
              x = function (t) {
                return 1 - Math.exp(-w0 * t) * (1 + w0 * t);
              };
            }
            var xT = x(T);
            return {
              ease: function (p) {
                return p >= 1 ? 1 : x(p * T) / xT;
              },
              duration: T,
              zeta: zeta,
              response: response,
            };
          };
          window.hwWobbleEllipse = function (cx, cy, rx, ry, seed, wobblePct) {
            wobblePct = wobblePct === undefined ? 3 : wobblePct;
            var N = 14,
              pts = [];
            for (var i = 0; i < N; i++) {
              var a = (i / N) * Math.PI * 2;
              var wr = 1 + window.hwHash(i * 13 + 5, seed) * (wobblePct / 100);
              pts.push([cx + Math.cos(a) * rx * wr, cy + Math.sin(a) * ry * wr]);
            }
            var mx = (pts[0][0] + pts[N - 1][0]) / 2,
              my = (pts[0][1] + pts[N - 1][1]) / 2;
            var d = "M" + mx.toFixed(1) + " " + my.toFixed(1);
            for (var j = 0; j < N; j++) {
              var p = pts[j],
                q = pts[(j + 1) % N];
              d +=
                " Q" +
                p[0].toFixed(1) +
                " " +
                p[1].toFixed(1) +
                " " +
                ((p[0] + q[0]) / 2).toFixed(1) +
                " " +
                ((p[1] + q[1]) / 2).toFixed(1);
            }
            return d;
          };

          /* ---- stroke matrix (family runtime): plain | soft | sharp | spray ----
             strokeType is a g09 variant control. Authored constants per type;
             unknown value → default ("plain") + console error (bounded-controls
             law). sharp = micro stroke-dasharray gaps (dry marker) — draw-on
             must therefore ride a MASK clone (the visible dasharray never
             animates). spray = index-seeded deterministic dots along the path
             via hwHash: position a pure function of path parameter + seed; NO
             feTurbulence anywhere.
             Returns { draw: pathToDashAnimate, group: maskedGroupOrNull } */
          window.hwStrokeTypes = {
            plain: {},
            soft: { blur: 0.6 },
            sharp: { dash: [3.0, 1.55] }, // × stroke-width
            spray: {
              coreOpacity: 0.5,
              coreBlur: 0.4,
              density: 0.16,
              scatter: 2.6,
              rMin: 1.1,
              rMax: 2.6,
            },
          };
          window.hwStrokeApply = function (pathEl, type, opts) {
            opts = opts || {};
            var cfg = window.hwStrokeTypes[type];
            if (!cfg) {
              console.error('hw: unknown strokeType "' + type + '" — falling back to "plain"');
              type = "plain";
              cfg = window.hwStrokeTypes.plain;
            }
            var svg = pathEl.ownerSVGElement;
            var ns = "http://www.w3.org/2000/svg";
            var w = parseFloat(getComputedStyle(pathEl).strokeWidth) || 6;
            if (type === "plain") return { draw: pathEl, group: null, type: type };
            if (type === "soft") {
              pathEl.style.filter = "blur(" + cfg.blur + "px)";
              return { draw: pathEl, group: null, type: type };
            }
            // sharp + spray: wrap in a masked group, draw-on animates the mask clone
            var id =
              opts.id ||
              "hwsm-" + Math.abs(Math.round(window.hwHash((opts.seed || 1) * 13.7, 5) * 1e6));
            var defs = svg.querySelector("defs");
            if (!defs) {
              defs = document.createElementNS(ns, "defs");
              svg.insertBefore(defs, svg.firstChild);
            }
            var mask = document.createElementNS(ns, "mask");
            mask.setAttribute("id", id);
            mask.setAttribute("maskUnits", "userSpaceOnUse");
            var clone = document.createElementNS(ns, "path");
            clone.setAttribute("d", pathEl.getAttribute("d"));
            clone.setAttribute("fill", "none");
            clone.setAttribute("stroke", "#fff");
            clone.setAttribute(
              "stroke-width",
              w * (type === "spray" ? 2 + (cfg.scatter * 2) / w : 1.7),
            );
            clone.setAttribute("stroke-linecap", "round");
            clone.setAttribute("stroke-linejoin", "round");
            mask.appendChild(clone);
            defs.appendChild(mask);
            var group = document.createElementNS(ns, "g");
            group.setAttribute("mask", "url(#" + id + ")");
            pathEl.parentNode.insertBefore(group, pathEl);
            group.appendChild(pathEl);
            if (type === "sharp") {
              pathEl.setAttribute(
                "stroke-dasharray",
                (cfg.dash[0] * w).toFixed(1) + " " + (cfg.dash[1] * w).toFixed(1),
              );
            } else {
              // spray: faint core + seeded dots
              pathEl.setAttribute("stroke-opacity", cfg.coreOpacity);
              pathEl.style.filter = "blur(" + cfg.coreBlur + "px)";
              var len = pathEl.getTotalLength();
              var n = Math.round(len * cfg.density * (opts.densityScale || 1));
              var seed = opts.seed || 1;
              var dots = document.createElementNS(ns, "g");
              for (var i = 0; i < n; i++) {
                var t = Math.min(
                  1,
                  Math.max(0, (i + 0.5) / n + (window.hwHash(i * 7, seed) * 0.35) / n),
                );
                var pt = pathEl.getPointAtLength(t * len);
                var pt2 = pathEl.getPointAtLength(Math.min(len, t * len + 0.5));
                var tx = pt2.x - pt.x,
                  ty = pt2.y - pt.y;
                var tl2 = Math.hypot(tx, ty) || 1;
                var nx = -ty / tl2,
                  nyv = tx / tl2;
                var off = window.hwHash(i * 7 + 1, seed) * (cfg.scatter + w * 0.55);
                var r = cfg.rMin + Math.abs(window.hwHash(i * 7 + 2, seed)) * (cfg.rMax - cfg.rMin);
                var c = document.createElementNS(ns, "circle");
                c.setAttribute("cx", (pt.x + nx * off).toFixed(1));
                c.setAttribute("cy", (pt.y + nyv * off).toFixed(1));
                c.setAttribute("r", r.toFixed(2));
                c.setAttribute("fill", getComputedStyle(pathEl).stroke);
                dots.appendChild(c);
              }
              group.appendChild(dots);
            }
            return { draw: clone, group: group, type: type };
          };

          /* Draw-on across the stroke matrix: dash-animate whatever hwStrokeApply
             says. (The pen-velocity ease variant rides the write-on item, not
             this one.) */
          window.hwDrawOn = function (tl, applied, at, dur, opts) {
            opts = opts || {};
            var p = applied.draw;
            var len = p.getTotalLength();
            // the draw target is always solid (plain/soft: the path itself; sharp/spray:
            // the mask clone — the visible path keeps its texture dasharray untouched)
            p.setAttribute("stroke-dasharray", len + " " + len);
            p.setAttribute("stroke-dashoffset", len);
            gsap.set(p, { opacity: 0 }); // kill the round-cap start nub pre-draw
            var ease = opts.ease || "power2.inOut";
            tl.set(p, { opacity: 1 }, at);
            tl.to(
              p,
              { strokeDashoffset: 0, duration: dur === undefined ? 0.7 : dur, ease: ease },
              at,
            );
          };

          // ---- hw-callout helpers (copy these too) ----
          // Builds outline + scribble + connector + label inside the wrapper and
          // stores the draw records + control poses hwCalloutOn consumes.
          // opts — content (uncounted): scribble (bool), seed, label, connector (bool)
          //        controls (g09 — see the CONFIG block, the published-parameter
          //        list): labelAt, strokeType, boil
          window.hwCalloutBuild = function (target, opts) {
            opts = opts || {};
            var seed = opts.seed || 1;
            var el = document.querySelector(target);
            var svg = el.querySelector("svg");
            var vb = svg.getAttribute("viewBox").split(" ");
            var W = parseFloat(vb[2]),
              H = parseFloat(vb[3]);
            var cx = W / 2,
              cy = H / 2,
              rx = W * 0.42,
              ry = H * 0.36;

            var outline = el.querySelector(".hw-co-outline");
            outline.setAttribute("d", window.hwWobbleEllipse(cx, cy, rx, ry, seed, 4));

            var scr = el.querySelector(".hw-co-scribble");
            if (opts.scribble === false) {
              scr.style.display = "none";
            } else {
              /* Denser rows so the zigzag reads as a scribbled hatch. At 6 rows
                 the near-horizontal runs dominate and it renders as stacked bars. */
              var d = "",
                rows = 11;
              for (var i = 0; i < rows; i++) {
                var t = (i + 0.5) / rows;
                var yy = cy - ry + t * ry * 2;
                var half = Math.sqrt(Math.max(0.05, 1 - Math.pow((yy - cy) / ry, 2)));
                var xw = rx * half * 0.86;
                var xa = cx - xw + window.hwHash(i * 7 + 2, seed) * 8;
                var xb = cx + xw + window.hwHash(i * 7 + 3, seed) * 8;
                d += (i === 0 ? "M " : " L ") + (i % 2 ? xa : xb).toFixed(1) + " " + yy.toFixed(1);
                d +=
                  " L " +
                  (i % 2 ? xb : xa).toFixed(1) +
                  " " +
                  (yy + window.hwHash(i * 7 + 4, seed) * 4).toFixed(1);
              }
              scr.setAttribute("d", d);
            }

            var conn = el.querySelector(".hw-co-connector");
            var label = el.querySelector(".hw-co-label");
            // labelAt is a declared variant control — bounded: unknown value
            // falls back to the default WITH a console error. Validated BEFORE
            // the connector branch so a malformed value always logs, even when
            // connector: false leaves the control inert.
            var at = opts.labelAt || "right";
            if (at !== "left" && at !== "right" && at !== "below") {
              console.error('hw: unknown labelAt "' + at + '" — falling back to "right"');
              at = "right";
            }
            var ex = null,
              ey = null;
            if (opts.connector === false) {
              conn.style.display = "none";
            } else {
              var sx = at === "left" ? cx - rx : at === "below" ? cx : cx + rx;
              var sy = at === "below" ? cy + ry : cy + ry * 0.35;
              ex = at === "left" ? sx - 70 : at === "below" ? sx + 40 : sx + 70;
              ey = sy + 55;
              conn.setAttribute(
                "d",
                "M " +
                  sx.toFixed(1) +
                  " " +
                  sy.toFixed(1) +
                  " Q " +
                  ((sx + ex) / 2 + window.hwHash(21, seed) * 14).toFixed(1) +
                  " " +
                  (sy + 46).toFixed(1) +
                  " " +
                  ex.toFixed(1) +
                  " " +
                  ey.toFixed(1),
              );
              label.style.left = (at === "left" ? ex - 180 : ex + 12) + "px";
              label.style.top = ey - 24 + "px";
            }
            label.textContent = opts.label || "";

            // strokeType control: OUTLINE + CONNECTOR take the texture (the
            // scribble stays plain). Bounding lives inside hwStrokeApply.
            var strokeType = opts.strokeType || "plain";
            var idBase = (el.id || "hw-co") + "-sm";
            el.__hwCo = {
              rx: rx,
              seed: seed,
              boil: opts.boil || "calm",
              // the label pops out of the connector tip (falls back to center
              // when the connector anatomy is off)
              popOrigin: ex === null ? "50% 50%" : ex.toFixed(1) + "px " + ey.toFixed(1) + "px",
              draw: {
                outline: window.hwStrokeApply(outline, strokeType, {
                  seed: seed,
                  id: idBase + "-outline",
                }),
                scribble:
                  opts.scribble === false ? null : window.hwStrokeApply(scr, "plain", { seed: seed }),
                connector:
                  opts.connector === false
                    ? null
                    : window.hwStrokeApply(conn, strokeType, {
                        seed: seed,
                        id: idBase + "-connector",
                      }),
              },
            };
          };
          // Draw sequence: outline -> scribble -> connector -> label pop, with
          // the g21 contact squash on the shapes group at pop arrival. The boil
          // pose registers here too — the host wires a position only.
          window.hwCalloutOn = function (tl, target, at) {
            var el = document.querySelector(target);
            var co = el.__hwCo;
            var t = at;
            ["outline", "scribble", "connector"].forEach(function (k) {
              var rec = co.draw[k];
              if (!rec) return;
              var dur = k === "scribble" ? 0.55 : k === "connector" ? 0.35 : 0.7;
              window.hwDrawOn(tl, rec, t, dur);
              t += dur * 0.85;
            });
            // label pop: the pop ARRIVES WITH MOMENTUM (accelerating into
            // contact) — the squash absorbs it; a settling back.out crosses
            // scale 1.0 at ~zero speed and the computed squash is invisible
            // (measured, not hand-picked)
            var pop = el.querySelector(".hw-co-pop");
            var popEase = gsap.parseEase("power2.in");
            gsap.set(pop, { scale: 0.001, opacity: 0, transformOrigin: co.popOrigin });
            tl.to(pop, { opacity: 1, duration: 0.08, ease: "none" }, t);
            tl.to(pop, { scale: 1, duration: 0.3, ease: popEase, immediateRender: false }, t);
            // arrival velocity in px of radial (rx) travel, measured at the
            // FIRST crossing of 1.0 — a settling ease's end-slope is ~0 and is
            // NOT the arrival velocity
            var eps = 1e-4;
            var pc = 1;
            for (var k2 = 1; k2 <= 1000; k2++) {
              if (popEase(k2 / 1000) >= 1) {
                pc = k2 / 1000;
                break;
              }
            }
            var vPop =
              ((popEase(Math.min(pc + eps, 1)) - popEase(pc - eps)) / (2 * eps)) * (co.rx / 0.3);
            var S = Math.min(0.08 * (Math.abs(vPop) / 2000), 0.25); // 0.08 = light drawn line tier
            var rec2 = window.springEase({ feel: "snappy" });
            var st = { s: 0 };
            var deform = el.querySelector(".hw-co-deform");
            gsap.set(deform, { transformOrigin: "50% 100%" });
            // volume-preserving squash on the SHAPES wrapper only — the label
            // rides the uniform-scale pop OUTSIDE the deform, so non-uniform
            // scale never reaches glyphs. Read-back assertion enforces the law.
            window.hwOnUpdate(tl, function () {
              var along = 1 - st.s;
              gsap.set(deform, { scaleY: along, scaleX: 1 / along });
              var ax = parseFloat(gsap.getProperty(deform, "scaleX"));
              var ay = parseFloat(gsap.getProperty(deform, "scaleY"));
              if (Math.abs(ax * ay - 1) > 0.01)
                console.error("hw volume law violated (callout): " + (ax * ay).toFixed(4));
            });
            // contact: squash in 2 frames, 1-frame hold, spring home (factory
            // duration consumed verbatim)
            tl.to(st, { s: S, duration: 2 / 30, ease: "power3.out" }, t + 0.3);
            tl.to(st, { s: 0, duration: rec2.duration, ease: rec2.ease }, t + 0.3 + 3 / 30);
            // boil control (family base) — x/y/rotation on the boil wrapper only
            window.hwBoilPose(tl, el.querySelector(".hw-co-boil"), co.boil, { seed: co.seed });
          };
          window.hwCalloutOff = function (tl, target, at) {
            tl.to(target, { opacity: 0, duration: 0.35, ease: "power2.in" }, at);
          };

          // ---- self-preview (shipped-default CONFIG) ----
          window.hwCalloutBuild("#hw-co-demo", {
            scribble: CONFIG.scribble,
            seed: SEED,
            label: CONFIG.label,
            connector: CONFIG.connector,
            labelAt: CONFIG.labelAt,
            strokeType: CONFIG.strokeType,
            boil: CONFIG.boil,
          });
          var tl = gsap.timeline({ paused: true });
          window.hwCalloutOn(tl, "#hw-co-demo", 0.4);
          window.hwCalloutOff(tl, "#hw-co-demo", 3.3);
          tl.set("#hw-co-root", { visibility: "hidden" }, 3.98);
          window.__timelines["hw-callout-circle"] = tl;
        })();
      </script>
    </body>
  </html>
  ```
</Accordion>

Tagged `handwritten` `annotation` `callout` `overlay`.

## Related topics

* [Browse the complete Catalog](/catalog)
* [Add assets and Catalog items in Studio](/studio/assets-and-blocks)
* [Build a richer composition](/go-further)
