> ## Documentation Index
> Fetch the complete documentation index at: https://hyperframes.heygen.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Tracing Beam

> A glowing dash follows one SVG path through three UI elements, lifting and brightening each element in sequence.

export const InstallCommand = ({command}) => {
  const [copied, setCopied] = React.useState(false);
  const copy = async () => {
    try {
      if (navigator.clipboard && window.isSecureContext) {
        await navigator.clipboard.writeText(command);
      } else {
        const previous = document.activeElement;
        const scratch = document.createElement("textarea");
        scratch.value = command;
        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">
        {command}
      </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="tracing-beam 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@0.7/dist/hyperframes-player.global.js"><\/script></head><body><script>fetch("/public/catalog/components/tracing-beam.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/tracing-beam.png");document.body.appendChild(p)});<\/script></body></html>`} />

## Install

<InstallCommand command="npx hyperframes add tracing-beam" />

That writes one file: `compositions/components/tracing-beam.html`.

## Paste it into your composition

Open `compositions/components/tracing-beam.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.

## Variables

Every one of these has a default, so the piece works untouched. Set the ones you
want to change on the element:

| Variable | Default                 | Accepts                   | What it does                                      |
| -------- | ----------------------- | ------------------------- | ------------------------------------------------- |
| `labels` | `Search,Preview,Export` | string                    | Three comma-separated labels shown in path order. |
| `accent` | `cyan`                  | `cyan`, `violet`, `amber` | Beam and active-element color.                    |

Set them with `data-variable-values` on the element that mounts it. These are the
defaults, so this behaves exactly like the preview above until you change one:

```html wrap theme={null}
<div
  data-composition-id="tracing-beam"
  data-composition-src="compositions/components/tracing-beam.html"
  data-variable-values='{"labels":"Search,Preview,Export","accent":"cyan"}'
></div>
```

## Source

<Accordion title={`tracing-beam.html`}>
  ```html theme={null}
  <!doctype html>
  <!--
    tracing-beam: HyperFrames video primitive (product-demo / attention)

    Concept: one glowing dash follows one authored SVG path through three UI
    elements. Each element brightens and lifts on arrival, then settles as the
    dash moves on. The final element stays active until the beam exits.

    Variables:
      - labels (string, default "Search,Preview,Export"): three comma-separated
        labels shown in path order.
      - accent (enum, default "cyan"): cyan, violet, or amber beam color.

    Envelope: fixed 3.00s IN, elastic HOLD, fixed 0.55s OUT. If the mounted
    duration is shorter than 3.55s, IN and OUT compress proportionally. Only
    HOLD grows when the mounted duration is longer.

    IN: the stage appears, then the dash visits all three elements in order.
    HOLD: the dash rests on the final element with a subtle vertical drift.
    OUT: the dash leaves the path, the final element settles, and the stage fades.

    Mount contract: everything needed at runtime lives inside this template.
    #root fills the host box with container query units and registers exactly
    one paused timeline under the hardcoded tracing-beam key.
  -->
  <html
    lang="en"
    data-composition-id="tracing-beam"
    data-composition-duration="4.5"
    data-composition-variables='[
      { "id": "labels", "type": "string", "role": "content", "label": "Labels", "description": "Three comma-separated labels shown in path order.", "default": "Search,Preview,Export" },
      { "id": "accent", "type": "enum", "role": "style", "label": "Accent", "description": "Beam and active-element color.", "default": "cyan", "options": [{ "value": "cyan", "label": "Cyan" }, { "value": "violet", "label": "Violet" }, { "value": "amber", "label": "Amber" }] }
    ]'
  >
    <head>
      <meta charset="UTF-8" />
      <title>Tracing Beam</title>
    </head>
    <body>
      <template>
        <div id="root" data-composition-id="tracing-beam" data-duration="4.5" data-fps="30">
          <style>
            *,
            *::before,
            *::after {
              box-sizing: border-box;
            }

            #root {
              position: absolute;
              inset: 0;
              overflow: hidden;
              container-type: size;
              isolation: isolate;
              color: var(--fg, #f8fafc);
              font-family: var(--font-body, Inter, system-ui, sans-serif);
              pointer-events: none;
            }

            .tb-clip,
            .tb-stage {
              position: absolute;
              inset: 0;
              width: 100%;
              height: 100%;
            }

            .tb-stage {
              opacity: 0;
            }

            .tb-route {
              position: absolute;
              inset: 0;
              width: 100%;
              height: 100%;
              overflow: visible;
            }

            .tb-beam {
              fill: none;
              stroke: var(--tb-accent, #5ee7ff);
              stroke-width: 9;
              stroke-linecap: round;
              stroke-linejoin: round;
              filter: url(#tracing-beam-glow);
              opacity: 0;
              will-change: stroke-dashoffset, opacity;
            }

            .tb-anchor {
              position: absolute;
              width: 22cqw;
              height: 24cqh;
              transform: translate(-50%, -50%);
            }

            .tb-anchor:nth-child(1) {
              left: 15%;
              top: 60%;
            }

            .tb-anchor:nth-child(2) {
              left: 50%;
              top: 35%;
            }

            .tb-anchor:nth-child(3) {
              left: 85%;
              top: 58%;
            }

            .tb-node {
              position: relative;
              width: 100%;
              height: 100%;
              will-change: transform;
            }

            .tb-halo {
              position: absolute;
              inset: -24%;
              border-radius: 50%;
              background: radial-gradient(
                circle,
                color-mix(in srgb, var(--tb-accent, #5ee7ff) 42%, transparent) 0%,
                transparent 70%
              );
              opacity: 0;
              will-change: transform, opacity;
            }

            .tb-card {
              position: relative;
              z-index: 1;
              width: 100%;
              height: 100%;
              display: flex;
              align-items: center;
              gap: 2.2cqw;
              padding: 2.4cqh 2.2cqw;
              overflow: hidden;
              border: 0.16cqmin solid color-mix(in srgb, var(--border, #475569) 78%, transparent);
              border-radius: var(--radius, 2.8cqmin);
              background: color-mix(in srgb, var(--surface, #172033) 92%, transparent);
              box-shadow: 0 2.4cqh 6cqh color-mix(in srgb, var(--bg, #0b0c0e) 56%, transparent);
              opacity: 0.48;
              will-change: opacity;
            }

            .tb-icon {
              flex: 0 0 auto;
              width: 7.5cqmin;
              aspect-ratio: 1;
              display: grid;
              place-items: center;
              border: 0.14cqmin solid color-mix(in srgb, var(--tb-accent, #5ee7ff) 52%, transparent);
              border-radius: 2cqmin;
              background: color-mix(in srgb, var(--tb-accent, #5ee7ff) 14%, var(--surface, #172033));
              color: var(--tb-accent, #5ee7ff);
              font-family: var(--font-mono, ui-monospace, "SF Mono", Menlo, monospace);
              font-size: clamp(13px, 3.5cqmin, 28px);
              font-weight: 760;
            }

            .tb-copy {
              min-width: 0;
            }

            .tb-kicker {
              margin-bottom: 0.8cqh;
              color: var(--muted, #94a3b8);
              font-family: var(--font-mono, ui-monospace, "SF Mono", Menlo, monospace);
              font-size: clamp(9px, 1.7cqmin, 16px);
              font-weight: 650;
              letter-spacing: 0.14em;
              text-transform: uppercase;
            }

            .tb-label {
              max-width: 100%;
              overflow: hidden;
              color: var(--fg, #f8fafc);
              font-family: var(--font-display, Inter, system-ui, sans-serif);
              font-size: clamp(13px, 4.6cqmin, 38px);
              font-weight: 720;
              line-height: 1.05;
              letter-spacing: -0.025em;
              text-overflow: ellipsis;
              white-space: nowrap;
            }
          </style>

          <div
            id="tracing-beam-clip"
            class="tb-clip clip"
            data-start="0"
            data-duration="4.5"
            data-track-index="0"
          >
            <div class="tb-stage">
              <svg
                class="tb-route"
                viewBox="0 0 1000 520"
                preserveAspectRatio="none"
                aria-hidden="true"
              >
                <defs>
                  <filter id="tracing-beam-glow" x="-30%" y="-30%" width="160%" height="160%">
                    <feGaussianBlur stdDeviation="7" result="blur" />
                    <feMerge>
                      <feMergeNode in="blur" />
                      <feMergeNode in="SourceGraphic" />
                    </feMerge>
                  </filter>
                </defs>
                <path
                  class="tb-beam"
                  d="M 150 312 C 280 312 335 182 500 182 C 665 182 720 302 850 302"
                />
              </svg>

              <div class="tb-nodes">
                <div class="tb-anchor">
                  <div class="tb-node">
                    <div class="tb-halo"></div>
                    <div class="tb-card">
                      <div class="tb-icon">01</div>
                      <div class="tb-copy">
                        <div class="tb-kicker">Step one</div>
                        <div class="tb-label"></div>
                      </div>
                    </div>
                  </div>
                </div>
                <div class="tb-anchor">
                  <div class="tb-node">
                    <div class="tb-halo"></div>
                    <div class="tb-card">
                      <div class="tb-icon">02</div>
                      <div class="tb-copy">
                        <div class="tb-kicker">Step two</div>
                        <div class="tb-label"></div>
                      </div>
                    </div>
                  </div>
                </div>
                <div class="tb-anchor">
                  <div class="tb-node">
                    <div class="tb-halo"></div>
                    <div class="tb-card">
                      <div class="tb-icon">03</div>
                      <div class="tb-copy">
                        <div class="tb-kicker">Step three</div>
                        <div class="tb-label"></div>
                      </div>
                    </div>
                  </div>
                </div>
              </div>
            </div>
          </div>

          <script src="https://cdn.jsdelivr.net/npm/gsap@3.14.2/dist/gsap.min.js"></script>
          <script>
            (function () {
              "use strict";

              var root = document.getElementById("root");
              var stage = root.querySelector(".tb-stage");
              var beam = root.querySelector(".tb-beam");
              var nodes = root.querySelectorAll(".tb-node");
              var labels = root.querySelectorAll(".tb-label");
              var vars =
                window.__hyperframes && window.__hyperframes.getVariables
                  ? window.__hyperframes.getVariables()
                  : {};

              var defaultLabels = ["Search", "Preview", "Export"];
              var labelValue = vars.labels == null ? defaultLabels.join(",") : String(vars.labels);
              var labelParts = labelValue.split(",");
              for (var i = 0; i < labels.length; i += 1) {
                var part = labelParts[i] == null ? "" : labelParts[i].trim();
                labels[i].textContent = part === "" ? defaultLabels[i] : part;
              }

              var accentName =
                vars.accent === "violet" || vars.accent === "amber" ? vars.accent : "cyan";
              var accentColors = {
                cyan: "var(--accent, #5ee7ff)",
                violet: "var(--accent-2, #a78bfa)",
                amber: "var(--brand, #fbbf24)",
              };
              root.style.setProperty("--tb-accent", accentColors[accentName]);

              var routeLength = beam.getTotalLength();
              var dashLength = routeLength * 0.24;
              beam.style.strokeDasharray = dashLength + " " + routeLength;
              beam.style.strokeDashoffset = String(dashLength);

              var IN_BASE = 3;
              var OUT_BASE = 0.55;
              var BEAM_START_BASE = 0.35;
              var BEAM_TRAVEL_BASE = 2.35;
              var NODE_MOVE_BASE = 0.28;
              var NODE_DIM_DELAY_BASE = 0.65;
              var BEAM_EXIT_BASE = 0.28;

              var duration = Math.max(0.001, parseFloat(root.dataset.duration || "4.5"));
              var fixedDuration = IN_BASE + OUT_BASE;
              var scale = duration < fixedDuration ? duration / fixedDuration : 1;
              var IN = IN_BASE * scale;
              var OUT = OUT_BASE * scale;
              var BEAM_START = BEAM_START_BASE * scale;
              var BEAM_TRAVEL = BEAM_TRAVEL_BASE * scale;
              var NODE_MOVE = NODE_MOVE_BASE * scale;
              var NODE_DIM_DELAY = NODE_DIM_DELAY_BASE * scale;
              var BEAM_EXIT = BEAM_EXIT_BASE * scale;
              var HOLD = Math.max(0, duration - (IN + OUT));
              var HOLD_START = IN;
              var OUT_START = IN + HOLD;
              var arrivals = [BEAM_START, BEAM_START + BEAM_TRAVEL * 0.5, BEAM_START + BEAM_TRAVEL];

              gsap.set(stage, { opacity: 0 });
              gsap.set(beam, { opacity: 0 });
              gsap.set(nodes, { y: 0 });
              gsap.set(root.querySelectorAll(".tb-halo"), { scale: 0.82 });

              var tl = gsap.timeline({ paused: true });

              function brighten(node, at) {
                var card = node.querySelector(".tb-card");
                var halo = node.querySelector(".tb-halo");
                tl.to(node, { y: "-2.2cqh", duration: NODE_MOVE, ease: "power3.out" }, at);
                tl.to(card, { opacity: 1, duration: NODE_MOVE, ease: "power2.out" }, at);
                tl.to(halo, { opacity: 0.86, scale: 1, duration: NODE_MOVE, ease: "power3.out" }, at);
              }

              function dim(node, at) {
                var card = node.querySelector(".tb-card");
                var halo = node.querySelector(".tb-halo");
                tl.to(node, { y: 0, duration: NODE_MOVE, ease: "power2.out" }, at);
                tl.to(card, { opacity: 0.48, duration: NODE_MOVE, ease: "power2.out" }, at);
                tl.to(halo, { opacity: 0, scale: 0.82, duration: NODE_MOVE, ease: "power2.out" }, at);
              }

              tl.to(stage, { opacity: 1, duration: Math.min(0.35, IN), ease: "power2.out" }, 0);
              tl.to(beam, { opacity: 1, duration: NODE_MOVE, ease: "power2.out" }, BEAM_START);
              tl.to(
                beam,
                {
                  strokeDashoffset: -(routeLength - dashLength),
                  duration: BEAM_TRAVEL,
                  ease: "sine.inOut",
                },
                BEAM_START,
              );

              brighten(nodes[0], arrivals[0]);
              brighten(nodes[1], arrivals[1]);
              brighten(nodes[2], arrivals[2]);
              dim(nodes[0], arrivals[0] + NODE_DIM_DELAY);
              dim(nodes[1], arrivals[1] + NODE_DIM_DELAY);

              if (HOLD > 0.2) {
                tl.to(
                  nodes[2],
                  { y: "-2.7cqh", duration: HOLD * 0.5, ease: "sine.inOut" },
                  HOLD_START,
                );
                tl.to(
                  nodes[2],
                  { y: "-2.2cqh", duration: HOLD * 0.5, ease: "sine.inOut" },
                  HOLD_START + HOLD * 0.5,
                );
              }

              tl.to(
                beam,
                {
                  strokeDashoffset: -routeLength,
                  opacity: 0,
                  duration: BEAM_EXIT,
                  ease: "power2.in",
                },
                OUT_START,
              );
              dim(nodes[2], OUT_START);
              tl.to(stage, { opacity: 0, duration: OUT, ease: "power2.in" }, OUT_START);

              tl.seek(0);
              window.__timelines = window.__timelines || {};
              window.__timelines["tracing-beam"] = tl;
            })();
          </script>
        </div>
      </template>
    </body>
  </html>
  ```
</Accordion>

Tagged `motion-primitive` `product-demo` `attention` `beam` `path` `spotlight`.

## Related topics

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


## Related topics

- [Oscilloscope Trace](/catalog/blocks/oscilloscope-trace.md)
- [When to generate artwork](/prompting/generated-artwork.md)
- [Recreating something you saw](/prompting/recreating-references.md)
