mirror of
https://github.com/heygen-com/hyperframes.git
synced 2026-09-01 19:42:03 +00:00
Miguel ÁngelandMiguel Angel Simon Sierra
1ae2067b8d
* feat(catalog): put the variables panel back, on payloads The panel drove its preview by loading an .html from docs/public, a type the host does not publish, so it showed an empty frame in production and was parked when the catalog was re-landed. It now mounts the same JSON payload the plain player uses and re-mounts it as values change, injecting them as window.__hfVariables into the composition head before any of its scripts run, which is where the runtime reads overrides from. Doing it in the markup rather than after load is what stops the composition initialising with the wrong values first. 172 items with variables get the panel back; the playhead carries across a change so a tweak mid-shot does not jump back to frame zero. * fix(docs): drop the unused url form and the needless escapes * fix(docs): the panel cannot reference a binding beside the export * feat(catalog): make importing an SVG the obvious move A reader arrives at this control with a shape, not with path data, and the panel asked for the coordinates first. Import is now the primary action in a drop target you can see is a drop target, and the raw path sits behind a disclosure for anyone who wants it. * feat(cli): let a fruitless catalog search report the gap An agent that searches by meaning and finds nothing worth installing knows something we do not: the name of a move the catalog is missing. There was no way to tell us, so that knowledge was lost at the end of every run. hyperframes feedback --search-miss "<query>" --wanted "<the move>" records it. It carries no rating, so it never lands in the rating metric, and it is a separate deliberate command rather than something catalog --query does on its own: plain search still sends nothing, which is what the CLI promises. --rating stops being required at the arg level, since a miss has no rating to give. The check moved into the run body, where an absent one is now handled rather than crashing on undefined. * feat(cli): carry tuned variable values into the install snippet Someone who tunes a block on its catalog page had no way to keep those values: the install command was the same one everybody gets, and the tuning stayed on the page. hyperframes add <item> --vars '<json>' now prints a mount element carrying data-variable-values, so the values land where the block is used. They ride on the host rather than being written into the installed file. That keeps the composition on disk byte-identical to the registry's, so a later reinstall can still tell an edit from an update, and it lets two mounts of the same block carry different values. * fix(catalog): serve the item's own directory so runtime paths resolve Some compositions assemble their asset URLs at run time — "compositions/components/" + texture + ".png" for the texture masks, a font the compiler pulled into _remote_media — and no scan of the markup can see a string that does not exist until a script concatenates it. Those items either rendered black or were dropped to a video that had never been uploaded. Each item that needs it now has its prepared directory published, and its payload carries a <base> pointing at it, so any relative path the composition invents resolves. caption-texture renders its masks again, and variable-font-flex has a preview at all for the first time: its MP4 and poster are both 403. Both layouts are published, because which one a composition asks for differs per item, and a directory only earns that if it is under 2 MB. The 12 MB texture sheet keeps the recorded video it already had. * fix(catalog): let the variables panel actually drive the composition Every control on the panel was inert. The values reached the composition and nothing repainted, because the payload had already been compiled: compiling inlines a mounted component and resolves its variables into the markup and CSS, so by the time a reader turns a knob there is nothing left to change. An item that declares variables now ships uncompiled, keeping the mount the runtime loads at run time, which is the only state where data-variable-values still means anything. The component travels inline as a data URI rather than a sibling file, because .html is the one type the docs host will not publish. The demo's own pinned values come off, so the reader's choices reach the mount instead of losing to the values the demo picked to show itself off. Measured on the rendered frame rather than the DOM: green rgb(98,207,144), blue rgb(6,6,199), violet rgb(177,147,230), and back to green. docs/public/catalog drops from 48 MB to 35 MB along the way, since an uncompiled payload carries far less than an inlined one. * feat(catalog): keep variable changes in the url A reader who tuned a piece lost it on reload, and had nothing to send anyone. The values now live in the query string, scoped by composition id so two links never read each other,and only the ones that differ from the defaults are written, so changing one knob gives a short URL rather than every variable spelled out. replaceState rather than pushState: dragging a slider should not leave a trail of history entries. An unreadable value is ignored rather than thrown, so a truncated or hand-edited link opens the piece at its defaults. * fix(catalog): only rewrite the url when a value actually changed * refactor(catalog): memoise the declared defaults on their content * feat(catalog): offer an install command carrying the tuned values The Install block is generated before anyone touches a knob, so it can only ever print the plain command. Someone who spent a minute tuning a piece copied it and got the defaults back. The panel now carries its own command in the Snippet tab, with --vars holding exactly the values that differ. An untouched piece still offers the same short command, so nothing gets noisier for the common case. * fix(catalog): a piece with nothing to render is a skip, not a failure caption-blend-difference is a stylesheet and a paragraph of prose — a class you add to your own captions, with no standalone scene to show. The generator treated that as a build failure, so every run ended by reporting something broken when nothing was. It now reports the shape it is and keeps its recorded video, which is the only honest preview such an item has. A genuine render failure still throws. * fix(catalog): restore variables from the url on a cold load A shared link opened at the defaults. The first render happens on the server, where there is no window to read the query string from, and React then hydrates against that markup and never revisits it — so the values only appeared once you touched a control. The URL is read again after mount, which is the first moment it exists. The value is also escaped once now rather than twice: URLSearchParams already decodes on the way out, and decoding a second time turned an SVG path full of percent-escapes into something that no longer parsed, besides doubling the length of every link. * fix(catalog): mount the preview with the values a link carried The frame was built from the declared defaults and the shared values were posted to it afterwards, which is too late for anything the composition reads once at init: a path arrived after the mark had already been drawn from the default one, so a link looked right in the panel and wrong on screen. * feat(catalog): the install command follows the values you tuned Copying the Install line gave the plain command back, because that block is generated before anyone touches a knob and had no way to know what changed. The tuned command only existed in the panel Snippet tab, which is not where anyone looks for it. The line now reads the same query string the panel writes, so the two agree without either component knowing the other exists, and a shared link carries the right command too. replaceState fires no event, so the panel announces its own writes. * fix(catalog): send a text variable to the preview once it is finished Every other control in the explorer reports a whole value on every event: a slider at any position is a position, a swatch is a colour. A text field is not. Typing v3 into a badge posted v first, so the preview remounted and rendered a composition built from half a word. The post now waits while a text field has focus and goes out when the edit is committed, with Enter or by clicking away. The field itself is unchanged and still tracks every keystroke. --------- Co-authored-by: Miguel Angel Simon Sierra <miguelangelsi07@gmail.com>
1290 lines
48 KiB
Plaintext
1290 lines
48 KiB
Plaintext
---
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title: "Bar Chart Race"
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description: "Ranked bars grow and overtake each other as a time series advances, with the axis rescaling as values climb and the accent handing over to whoever leads"
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---
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import { InstallCommand } from "/snippets/install-command.jsx";
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import { VariablesExplorer } from "/snippets/variables-explorer.jsx";
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<VariablesExplorer
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previewSrc="/public/catalog/blocks/bar-chart-race.json"
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compositionId="bar-chart-race"
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compositionSrc="compositions/bar-chart-race.html"
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variables={[{"id":"title","type":"string","label":"Title","default":"Streaming Subscribers by Service"},{"id":"subtitle","type":"string","label":"Subtitle","default":"Ranked by reported subscribers"},{"id":"periods","type":"string","label":"Period labels (comma separated)","default":"2019, 2020, 2021, 2022, 2023, 2024"},{"id":"series","type":"string","label":"Series (one per line: Name: v1, v2, ...)","default":"Northwind: 42, 58, 71, 96, 118, 131\nCobalt: 30, 46, 68, 92, 126, 168\nFerry: 55, 62, 66, 70, 74, 79\nMarlow: 18, 33, 52, 61, 88, 104\nAster: 25, 28, 44, 58, 63, 72\nPell: 12, 20, 39, 47, 55, 90\nQuill: 8, 11, 15, 24, 40, 66\nDunmore: 35, 37, 38, 40, 42, 44"},{"id":"barCount","type":"number","label":"Bars shown","default":6,"min":3,"max":12,"step":1},{"id":"periodDuration","type":"number","label":"Seconds per period","default":2,"min":0.4,"max":6,"step":0.1},{"id":"valuePrefix","type":"string","label":"Value prefix","default":"$"},{"id":"valueSuffix","type":"string","label":"Value suffix","default":"M"},{"id":"valueDecimals","type":"number","label":"Value decimals","default":0,"min":0,"max":3,"step":1},{"id":"accent","type":"color","label":"Leader accent","default":"#c8452d"}]}
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>
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```html bar-chart-race.html
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<!doctype html>
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<html lang="en">
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<head>
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<meta charset="UTF-8" />
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<meta name="viewport" content="width=1920, height=1080" />
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<title>Bar Chart Race</title>
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<script src="https://cdn.jsdelivr.net/npm/gsap@3.14.2/dist/gsap.min.js"></script>
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<style>
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*,
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*::before,
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*::after {
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margin: 0;
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padding: 0;
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box-sizing: border-box;
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}
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html,
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body {
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width: 1920px;
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height: 1080px;
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overflow: hidden;
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background-color: #f5f3ef;
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}
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</style>
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</head>
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<body>
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<div
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id="bcr-root"
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data-composition-id="bar-chart-race"
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data-width="1920"
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data-height="1080"
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data-start="0"
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data-duration="12"
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data-composition-variables='[
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{"id":"title","type":"string","label":"Title","default":"Streaming Subscribers by Service"},
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{"id":"subtitle","type":"string","label":"Subtitle","default":"Ranked by reported subscribers"},
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{"id":"periods","type":"string","label":"Period labels (comma separated)","default":"2019, 2020, 2021, 2022, 2023, 2024"},
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{"id":"series","type":"string","label":"Series (one per line: Name: v1, v2, ...)","default":"Northwind: 42, 58, 71, 96, 118, 131\nCobalt: 30, 46, 68, 92, 126, 168\nFerry: 55, 62, 66, 70, 74, 79\nMarlow: 18, 33, 52, 61, 88, 104\nAster: 25, 28, 44, 58, 63, 72\nPell: 12, 20, 39, 47, 55, 90\nQuill: 8, 11, 15, 24, 40, 66\nDunmore: 35, 37, 38, 40, 42, 44"},
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{"id":"barCount","type":"number","label":"Bars shown","default":6,"min":3,"max":12,"step":1},
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{"id":"periodDuration","type":"number","label":"Seconds per period","default":2,"min":0.4,"max":6,"step":0.1},
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{"id":"valuePrefix","type":"string","label":"Value prefix","default":"$"},
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{"id":"valueSuffix","type":"string","label":"Value suffix","default":"M"},
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{"id":"valueDecimals","type":"number","label":"Value decimals","default":0,"min":0,"max":3,"step":1},
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{"id":"accent","type":"color","label":"Leader accent","default":"#c8452d"}
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]'
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>
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<div id="bcr-stage" class="clip" data-start="0" data-duration="12" data-track-index="0">
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<div id="bcr-bg"></div>
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<div id="bcr-head">
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<div id="bcr-head-left">
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<h1 id="bcr-title">Streaming Subscribers by Service</h1>
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<p id="bcr-subtitle">Ranked by reported subscribers</p>
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</div>
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<div id="bcr-head-right">
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<span id="bcr-period-caption">Period</span>
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<span id="bcr-period">2019</span>
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</div>
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</div>
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<!-- Rows live here, one per series, positioned by rank. -->
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<div id="bcr-plot"></div>
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<!-- Axis is painted above the rows: the tick labels sliding left is the
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visible evidence that the scale is rescaling as values climb. -->
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<div id="bcr-axis"></div>
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<p id="bcr-source">Placeholder data</p>
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</div>
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<style>
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#bcr-root {
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position: relative;
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width: 1920px;
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height: 1080px;
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overflow: hidden;
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font-family: Inter, sans-serif;
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color: #1f1d1b;
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}
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||
#bcr-stage {
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position: absolute;
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inset: 0;
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}
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/* Scene fill goes on a full-bleed child, never the composition root. */
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#bcr-bg {
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position: absolute;
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inset: 0;
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background-color: #f5f3ef;
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}
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#bcr-head {
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position: absolute;
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top: 58px;
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left: 96px;
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width: 1728px;
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display: flex;
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align-items: flex-start;
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justify-content: space-between;
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}
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#bcr-title {
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font-size: 46px;
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font-weight: 700;
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letter-spacing: -0.015em;
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line-height: 1.1;
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}
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#bcr-subtitle {
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margin-top: 10px;
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font-size: 19px;
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font-weight: 400;
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color: #6b6560;
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}
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#bcr-head-right {
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display: flex;
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flex-direction: column;
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align-items: flex-end;
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}
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#bcr-period-caption {
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font-size: 15px;
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font-weight: 600;
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letter-spacing: 0.18em;
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text-transform: uppercase;
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color: #6b6560;
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}
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#bcr-period {
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margin-top: 4px;
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font-size: 72px;
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font-weight: 700;
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line-height: 1;
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font-variant-numeric: tabular-nums;
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letter-spacing: -0.02em;
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}
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#bcr-plot {
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position: absolute;
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left: 0;
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top: 236px;
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width: 1920px;
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height: 760px;
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overflow: hidden;
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}
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.bcr-row {
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position: absolute;
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left: 0;
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top: 0;
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width: 1920px;
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}
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/* Rows are transparent so both bars of an overtake stay visible sliding
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past each other; only the two TEXT blocks carry an opaque backing, so
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the front row's label covers the one it crosses instead of tangling
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with it. */
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.bcr-name {
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position: absolute;
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left: 96px;
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width: 272px;
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top: 50%;
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transform: translateY(-50%);
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text-align: right;
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font-size: 26px;
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font-weight: 600;
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line-height: 1.7;
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white-space: nowrap;
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overflow: hidden;
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text-overflow: ellipsis;
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background-color: #f5f3ef;
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}
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.bcr-bar {
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position: absolute;
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left: 400px;
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top: 50%;
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transform: translateY(-50%);
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border-radius: 3px;
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background-color: #1f1d1b;
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}
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.bcr-value {
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position: absolute;
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left: 404px;
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top: 50%;
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padding: 0 12px;
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font-size: 26px;
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font-weight: 600;
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line-height: 1.7;
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font-variant-numeric: tabular-nums;
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white-space: nowrap;
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background-color: #f5f3ef;
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}
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#bcr-axis {
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position: absolute;
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inset: 0;
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z-index: 5000;
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}
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.bcr-tick-line {
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position: absolute;
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top: 232px;
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left: 0;
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width: 1px;
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height: 768px;
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background-color: rgba(31, 29, 27, 0.11);
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}
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.bcr-tick-line.bcr-tick-zero {
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background-color: rgba(31, 29, 27, 0.5);
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}
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.bcr-tick-label {
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position: absolute;
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top: 198px;
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left: 0;
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font-size: 17px;
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font-weight: 500;
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font-variant-numeric: tabular-nums;
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color: #6b6560;
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white-space: nowrap;
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}
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#bcr-source {
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position: absolute;
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left: 96px;
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top: 1014px;
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font-size: 16px;
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color: #6b6560;
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}
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</style>
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<script>
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(function () {
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"use strict";
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// ---- variables -------------------------------------------------
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// The declaration attribute is the single source of truth: when the
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// runtime is absent (raw file open) we parse the same attribute.
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function readVars() {
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// Read the declaration off THIS block's own root, never
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// document.documentElement: mounted as a sub-composition the block's
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// <html> is discarded and documentElement is the HOST's, so a
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// documentElement read returns the wrong element (or null) and the
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// block renders with no series at all. Runtime / host / --variables
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// values are layered on top as overrides, so the block does not
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// depend on the runtime being injected before this script runs.
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var out = {};
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var root = document.getElementById("bcr-root");
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try {
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JSON.parse(root.getAttribute("data-composition-variables")).forEach(function (d) {
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out[d.id] = d.default;
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});
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} catch (err) {
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// Declaration unreadable; the per-variable literal fallbacks below
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// still produce a renderable composition.
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}
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var hf = window.__hyperframes;
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var overrides =
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hf && typeof hf.getVariables === "function"
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? hf.getVariables()
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: window.__hfVariables;
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if (overrides && typeof overrides === "object") {
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for (var key in overrides) {
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if (overrides[key] !== undefined) out[key] = overrides[key];
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}
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}
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return out;
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||
}
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||
|
||
function num(value, fallback, lo, hi) {
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var n = typeof value === "number" ? value : Number.parseFloat(value);
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||
if (!Number.isFinite(n)) n = fallback;
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return Math.min(hi, Math.max(lo, n));
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||
}
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||
|
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function str(value, fallback) {
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return typeof value === "string" && value.length > 0 ? value : fallback;
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}
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var V = readVars();
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var ACCENT = str(V.accent, "#c8452d");
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var BAR_COLOR = "#1f1d1b";
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var BAR_COUNT = Math.round(num(V.barCount, 6, 1, 24));
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var PERIOD_DURATION = num(V.periodDuration, 2, 0.1, 30);
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var DECIMALS = Math.round(num(V.valueDecimals, 0, 0, 6));
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var PREFIX = typeof V.valuePrefix === "string" ? V.valuePrefix : "";
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var SUFFIX = typeof V.valueSuffix === "string" ? V.valueSuffix : "";
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||
|
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// ---- data format ------------------------------------------------
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// Wide table, one series per line: "Name: v1, v2, v3".
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// `;` is accepted as a line separator so the whole table survives a
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// single-line text input. Short rows hold their last value.
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function parsePeriods(text) {
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return String(text)
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.split(",")
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.map(function (s) {
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return s.trim();
|
||
})
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.filter(function (s) {
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return s.length > 0;
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});
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}
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function parseSeries(text, periodCount) {
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var out = [];
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var lines = String(text).split(/[\n;]+/);
|
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for (var i = 0; i < lines.length; i++) {
|
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var line = lines[i].trim();
|
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if (!line) continue;
|
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var split = line.indexOf(":");
|
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if (split < 0) continue;
|
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var label = line.slice(0, split).trim();
|
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if (!label) continue;
|
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var values = line
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.slice(split + 1)
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||
.split(",")
|
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.map(function (s) {
|
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return Number.parseFloat(s.trim());
|
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})
|
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.filter(function (n) {
|
||
return Number.isFinite(n);
|
||
});
|
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if (values.length === 0) continue;
|
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while (values.length < periodCount) values.push(values[values.length - 1]);
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out.push({ label: label, values: values.slice(0, periodCount) });
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}
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return out;
|
||
}
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var PERIODS = parsePeriods(str(V.periods, "2019, 2020, 2021, 2022, 2023, 2024"));
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if (PERIODS.length === 0) PERIODS = ["1"];
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var SERIES = parseSeries(str(V.series, ""), PERIODS.length);
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var T = PERIODS.length;
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var N = SERIES.length;
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|
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// ---- closed-form state ------------------------------------------
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// k = 10 interpolated keyframes per period (Bostock's number). Rank is
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// computed at each keyframe from the interpolated value and baked once;
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// a bar's on-screen row is then solved FROM rank, so two bars can never
|
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// cross without swapping. Everything below is a pure function of t.
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var K = 10;
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var KF_DURATION = PERIOD_DURATION / K;
|
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var KF_COUNT = T > 1 ? (T - 1) * K + 1 : 1;
|
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var RACE_SECONDS = T > 1 ? (T - 1) * PERIOD_DURATION : 0;
|
||
|
||
function clamp(v, lo, hi) {
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||
return v < lo ? lo : v > hi ? hi : v;
|
||
}
|
||
|
||
function valueAt(t, series) {
|
||
if (T < 2) return series.values[0];
|
||
var u = t / PERIOD_DURATION;
|
||
var i = clamp(Math.floor(u), 0, T - 2);
|
||
var f = clamp(u - i, 0, 1);
|
||
return series.values[i] + (series.values[i + 1] - series.values[i]) * f;
|
||
}
|
||
|
||
// ranks[m][j] = integer rank of series j at keyframe m (0 = leader).
|
||
var RANKS = [];
|
||
for (var m = 0; m < KF_COUNT; m++) {
|
||
var tm = m * KF_DURATION;
|
||
var order = SERIES.map(function (s, j) {
|
||
return { j: j, v: valueAt(tm, s) };
|
||
});
|
||
// Descending by value; index breaks ties so the sort is total and
|
||
// therefore identical on every evaluation.
|
||
order.sort(function (a, b) {
|
||
return b.v - a.v || a.j - b.j;
|
||
});
|
||
var row = new Array(N);
|
||
for (var r = 0; r < order.length; r++) row[order[r].j] = r;
|
||
RANKS.push(row);
|
||
}
|
||
|
||
function smoothstep(x) {
|
||
return x * x * (3 - 2 * x);
|
||
}
|
||
|
||
// Continuous row position solved from the baked ranks. A rank change
|
||
// between two adjacent keyframes IS the swap, and it plays out over one
|
||
// keyframe interval (PERIOD_DURATION / 10) instead of snapping.
|
||
function rankPosAt(t, j) {
|
||
if (KF_COUNT < 2) return RANKS[0][j];
|
||
var m = t / KF_DURATION;
|
||
var m0 = clamp(Math.floor(m), 0, KF_COUNT - 2);
|
||
var e = smoothstep(clamp(m - m0, 0, 1));
|
||
var a = RANKS[m0][j];
|
||
var b = RANKS[m0 + 1][j];
|
||
return a + (b - a) * e;
|
||
}
|
||
|
||
// ---- formatting --------------------------------------------------
|
||
function formatValue(v) {
|
||
return (
|
||
PREFIX +
|
||
v.toLocaleString("en-US", {
|
||
minimumFractionDigits: DECIMALS,
|
||
maximumFractionDigits: DECIMALS,
|
||
}) +
|
||
SUFFIX
|
||
);
|
||
}
|
||
|
||
function hexToRgb(hex) {
|
||
var h = String(hex).trim().replace("#", "");
|
||
if (h.length === 3) h = h[0] + h[0] + h[1] + h[1] + h[2] + h[2];
|
||
var n = Number.parseInt(h, 16);
|
||
if (!Number.isFinite(n)) return [31, 29, 27];
|
||
return [(n >> 16) & 255, (n >> 8) & 255, n & 255];
|
||
}
|
||
|
||
// Accent is the only colour in the piece and it carries exactly one
|
||
// meaning: this bar currently leads. It is binary, not blended — a
|
||
// half-accent bar would assert "half leading", which is not a fact.
|
||
// It hands over at the instant the two values cross, which is also the
|
||
// instant the two bars are the same length, so the handover lands on
|
||
// the overtake instead of drifting near it. Flat fill, never a
|
||
// gradient: a gradient inside a bar makes the longest bar the palest
|
||
// exactly where the eye is comparing lengths.
|
||
function hexToCss(hex) {
|
||
var rgb = hexToRgb(hex);
|
||
return "rgb(" + rgb[0] + ", " + rgb[1] + ", " + rgb[2] + ")";
|
||
}
|
||
|
||
var BAR_FILL = hexToCss(BAR_COLOR);
|
||
var ACCENT_FILL = hexToCss(ACCENT);
|
||
|
||
function niceStep(x) {
|
||
var e = Math.pow(10, Math.floor(Math.log10(x)));
|
||
var f = x / e;
|
||
return e * (f <= 1 ? 1 : f <= 2 ? 2 : f <= 5 ? 5 : 10);
|
||
}
|
||
|
||
// ---- geometry ----------------------------------------------------
|
||
var TRACK_X = 400;
|
||
var TRACK_W = 1180;
|
||
var PLOT_H = 760;
|
||
var PITCH = PLOT_H / BAR_COUNT;
|
||
var BAR_H = Math.max(12, PITCH * 0.62);
|
||
var TICK_POOL = 12;
|
||
|
||
// ---- DOM ---------------------------------------------------------
|
||
var plot = document.getElementById("bcr-plot");
|
||
var axis = document.getElementById("bcr-axis");
|
||
var periodEl = document.getElementById("bcr-period");
|
||
document.getElementById("bcr-title").textContent = str(
|
||
V.title,
|
||
"Streaming Subscribers by Service",
|
||
);
|
||
document.getElementById("bcr-subtitle").textContent = str(
|
||
V.subtitle,
|
||
"Ranked by reported subscribers",
|
||
);
|
||
|
||
var rows = SERIES.map(function (s) {
|
||
var row = document.createElement("div");
|
||
row.className = "bcr-row";
|
||
row.style.height = PITCH + "px";
|
||
|
||
// Declared, not silenced: two rows mid-overtake genuinely occupy the
|
||
// same band for ~200ms. Readability is handled by the opaque chip on
|
||
// each label, so the front one is always legible.
|
||
var name = document.createElement("div");
|
||
name.className = "bcr-name";
|
||
name.setAttribute("data-layout-allow-overlap", "");
|
||
name.textContent = s.label;
|
||
|
||
var bar = document.createElement("div");
|
||
bar.className = "bcr-bar";
|
||
bar.style.height = BAR_H + "px";
|
||
|
||
var value = document.createElement("div");
|
||
value.className = "bcr-value";
|
||
value.setAttribute("data-layout-allow-overlap", "");
|
||
|
||
row.appendChild(name);
|
||
row.appendChild(bar);
|
||
row.appendChild(value);
|
||
plot.appendChild(row);
|
||
return { row: row, bar: bar, value: value };
|
||
});
|
||
|
||
var ticks = [];
|
||
for (var k = 0; k < TICK_POOL; k++) {
|
||
var line = document.createElement("div");
|
||
line.className = "bcr-tick-line" + (k === 0 ? " bcr-tick-zero" : "");
|
||
var label = document.createElement("div");
|
||
label.className = "bcr-tick-label";
|
||
axis.appendChild(line);
|
||
axis.appendChild(label);
|
||
ticks.push({ line: line, label: label });
|
||
}
|
||
|
||
// ---- render ------------------------------------------------------
|
||
function render(t) {
|
||
if (N === 0) return;
|
||
|
||
var values = SERIES.map(function (s) {
|
||
return valueAt(t, s);
|
||
});
|
||
// Paint order follows the CURRENT value, not the row position: the
|
||
// bar that has just edged ahead comes forward, so at the instant two
|
||
// bars are superimposed the frame shows the one that is overtaking
|
||
// (its bar and its label together) rather than the one it passed.
|
||
var byValue = values
|
||
.map(function (v, i) {
|
||
return i;
|
||
})
|
||
.sort(function (a, b) {
|
||
return values[b] - values[a] || a - b;
|
||
});
|
||
var zRank = new Array(values.length);
|
||
for (var q = 0; q < byValue.length; q++) zRank[byValue[q]] = q;
|
||
var leader = byValue[0];
|
||
var maxValue = values[leader];
|
||
// Headroom keeps the leader off the frame edge; the domain is a
|
||
// continuous function of t, so the axis glides instead of stepping.
|
||
var scaleMax = Math.max(maxValue * 1.06, 1e-6);
|
||
var step = niceStep(scaleMax / 4);
|
||
|
||
for (var i = 0; i < TICK_POOL; i++) {
|
||
var tv = i * step;
|
||
var visible = tv <= scaleMax;
|
||
var tx = TRACK_X + (tv / scaleMax) * TRACK_W;
|
||
ticks[i].line.style.transform = "translateX(" + tx.toFixed(2) + "px)";
|
||
ticks[i].line.style.opacity = visible ? "1" : "0";
|
||
ticks[i].label.style.transform =
|
||
"translateX(" + tx.toFixed(2) + "px) translateX(-50%)";
|
||
ticks[i].label.style.opacity = visible ? "1" : "0";
|
||
ticks[i].label.textContent = visible ? formatValue(tv) : "";
|
||
}
|
||
|
||
for (var j = 0; j < rows.length; j++) {
|
||
var rankPos = rankPosAt(t, j);
|
||
var barW = (values[j] / scaleMax) * TRACK_W;
|
||
var el = rows[j];
|
||
|
||
el.row.style.transform = "translateY(" + (rankPos * PITCH).toFixed(2) + "px)";
|
||
// Fades out only as it slides past the last visible slot.
|
||
el.row.style.opacity = clamp(BAR_COUNT - rankPos, 0, 1).toFixed(3);
|
||
el.row.style.zIndex = String(1000 - zRank[j]);
|
||
|
||
el.bar.style.width = barW.toFixed(2) + "px";
|
||
el.bar.style.backgroundColor = j === leader ? ACCENT_FILL : BAR_FILL;
|
||
|
||
el.value.style.transform = "translate(" + barW.toFixed(2) + "px, -50%)";
|
||
el.value.textContent = formatValue(values[j]);
|
||
}
|
||
|
||
var pIndex = clamp(Math.floor(t / PERIOD_DURATION), 0, T - 1);
|
||
periodEl.textContent = PERIODS[pIndex];
|
||
}
|
||
|
||
// ---- timeline ----------------------------------------------------
|
||
// A property SETTER drives the per-frame work: tl.eventCallback("onUpdate")
|
||
// does not fire on tl.seek(), a tweened accessor does.
|
||
var driver = { _t: 0 };
|
||
Object.defineProperty(driver, "t", {
|
||
get: function () {
|
||
return this._t;
|
||
},
|
||
set: function (value) {
|
||
this._t = value;
|
||
render(value);
|
||
},
|
||
});
|
||
|
||
var tl = gsap.timeline({ paused: true });
|
||
if (RACE_SECONDS > 0) {
|
||
tl.to(driver, { t: RACE_SECONDS, duration: RACE_SECONDS, ease: "none" }, 0);
|
||
}
|
||
render(0);
|
||
|
||
window.__timelines = window.__timelines || {};
|
||
window.__timelines["bar-chart-race"] = tl;
|
||
})();
|
||
</script>
|
||
</div>
|
||
</body>
|
||
</html>
|
||
```
|
||
|
||
</VariablesExplorer>
|
||
|
||
## Install
|
||
|
||
<InstallCommand command="npx hyperframes add bar-chart-race" item="bar-chart-race" />
|
||
|
||
That writes one file: `compositions/bar-chart-race.html`.
|
||
|
||
## Add it to your video
|
||
|
||
It runs for 12 seconds at 1920×1080. Paste this into your composition:
|
||
|
||
```html index.html
|
||
<div
|
||
data-composition-id="bar-chart-race"
|
||
data-composition-src="compositions/bar-chart-race.html"
|
||
data-start="0"
|
||
data-duration="12"
|
||
data-track-index="1"
|
||
data-width="1920"
|
||
data-height="1080"
|
||
></div>
|
||
```
|
||
|
||
Move it in time with `data-start`. Put it on a different timeline row with
|
||
`data-track-index`. See [data attributes](/concepts/data-attributes) for the rest.
|
||
|
||
## Change how it looks
|
||
|
||
Set these CSS variables on the block:
|
||
|
||
- `title` — Title. Defaults to `Streaming Subscribers by Service`.
|
||
- `subtitle` — Subtitle. Defaults to `Ranked by reported subscribers`.
|
||
- `periods` — Period labels (comma separated). Defaults to `2019, 2020, 2021, 2022, 2023, 2024`.
|
||
- `series` — Series (one per line: Name: v1, v2, ...). Defaults to `Northwind: 42, 58, 71, 96, 118, 131
|
||
Cobalt: 30, 46, 68, 92, 126, 168
|
||
Ferry: 55, 62, 66, 70, 74, 79
|
||
Marlow: 18, 33, 52, 61, 88, 104
|
||
Aster: 25, 28, 44, 58, 63, 72
|
||
Pell: 12, 20, 39, 47, 55, 90
|
||
Quill: 8, 11, 15, 24, 40, 66
|
||
Dunmore: 35, 37, 38, 40, 42, 44`.
|
||
- `barCount` — Bars shown. Defaults to `6`.
|
||
- `periodDuration` — Seconds per period. Defaults to `2`.
|
||
- `valuePrefix` — Value prefix. Defaults to `$`.
|
||
- `valueSuffix` — Value suffix. Defaults to `M`.
|
||
- `valueDecimals` — Value decimals. Defaults to `0`.
|
||
- `accent` — Leader accent. Defaults to `#c8452d`.
|
||
|
||
## Variables
|
||
|
||
Every one of these has a default, so the piece works untouched. Set the ones you
|
||
want to change on the element:
|
||
|
||
| Variable | Default | Accepts | What it does |
|
||
| --- | --- | --- | --- |
|
||
| `title` | `Streaming Subscribers by Service` | string | |
|
||
| `subtitle` | `Ranked by reported subscribers` | string | |
|
||
| `periods` | `2019, 2020, 2021, 2022, 2023, 2024` | string | |
|
||
| `series` | `Northwind: 42, 58, 71, 96, 118, 131
|
||
Cobalt: 30, 46, 68, 92, 126, 168
|
||
Ferry: 55, 62, 66, 70, 74, 79
|
||
Marlow: 18, 33, 52, 61, 88, 104
|
||
Aster: 25, 28, 44, 58, 63, 72
|
||
Pell: 12, 20, 39, 47, 55, 90
|
||
Quill: 8, 11, 15, 24, 40, 66
|
||
Dunmore: 35, 37, 38, 40, 42, 44` | string | |
|
||
| `barCount` | `6` | 3 to 12, step 1 | |
|
||
| `periodDuration` | `2` | 0.4 to 6, step 0.1 | |
|
||
| `valuePrefix` | `$` | string | |
|
||
| `valueSuffix` | `M` | string | |
|
||
| `valueDecimals` | `0` | 0 to 3, step 1 | |
|
||
| `accent` | `#c8452d` | 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
|
||
<div
|
||
data-composition-id="bar-chart-race"
|
||
data-composition-src="compositions/bar-chart-race.html"
|
||
data-variable-values='{"title":"Streaming Subscribers by Service","subtitle":"Ranked by reported subscribers","periods":"2019, 2020, 2021, 2022, 2023, 2024","series":"Northwind: 42, 58, 71, 96, 118, 131\nCobalt: 30, 46, 68, 92, 126, 168\nFerry: 55, 62, 66, 70, 74, 79\nMarlow: 18, 33, 52, 61, 88, 104\nAster: 25, 28, 44, 58, 63, 72\nPell: 12, 20, 39, 47, 55, 90\nQuill: 8, 11, 15, 24, 40, 66\nDunmore: 35, 37, 38, 40, 42, 44","barCount":6,"periodDuration":2,"valuePrefix":"$","valueSuffix":"M","valueDecimals":0,"accent":"#c8452d"}'
|
||
></div>
|
||
```
|
||
|
||
## Source
|
||
|
||
<Accordion title={`bar-chart-race.html`}>
|
||
|
||
```html
|
||
<!doctype html>
|
||
<html lang="en">
|
||
<head>
|
||
<meta charset="UTF-8" />
|
||
<meta name="viewport" content="width=1920, height=1080" />
|
||
<title>Bar Chart Race</title>
|
||
<script src="https://cdn.jsdelivr.net/npm/gsap@3.14.2/dist/gsap.min.js"></script>
|
||
<style>
|
||
*,
|
||
*::before,
|
||
*::after {
|
||
margin: 0;
|
||
padding: 0;
|
||
box-sizing: border-box;
|
||
}
|
||
html,
|
||
body {
|
||
width: 1920px;
|
||
height: 1080px;
|
||
overflow: hidden;
|
||
background-color: #f5f3ef;
|
||
}
|
||
</style>
|
||
</head>
|
||
<body>
|
||
<div
|
||
id="bcr-root"
|
||
data-composition-id="bar-chart-race"
|
||
data-width="1920"
|
||
data-height="1080"
|
||
data-start="0"
|
||
data-duration="12"
|
||
data-composition-variables='[
|
||
{"id":"title","type":"string","label":"Title","default":"Streaming Subscribers by Service"},
|
||
{"id":"subtitle","type":"string","label":"Subtitle","default":"Ranked by reported subscribers"},
|
||
{"id":"periods","type":"string","label":"Period labels (comma separated)","default":"2019, 2020, 2021, 2022, 2023, 2024"},
|
||
{"id":"series","type":"string","label":"Series (one per line: Name: v1, v2, ...)","default":"Northwind: 42, 58, 71, 96, 118, 131\nCobalt: 30, 46, 68, 92, 126, 168\nFerry: 55, 62, 66, 70, 74, 79\nMarlow: 18, 33, 52, 61, 88, 104\nAster: 25, 28, 44, 58, 63, 72\nPell: 12, 20, 39, 47, 55, 90\nQuill: 8, 11, 15, 24, 40, 66\nDunmore: 35, 37, 38, 40, 42, 44"},
|
||
{"id":"barCount","type":"number","label":"Bars shown","default":6,"min":3,"max":12,"step":1},
|
||
{"id":"periodDuration","type":"number","label":"Seconds per period","default":2,"min":0.4,"max":6,"step":0.1},
|
||
{"id":"valuePrefix","type":"string","label":"Value prefix","default":"$"},
|
||
{"id":"valueSuffix","type":"string","label":"Value suffix","default":"M"},
|
||
{"id":"valueDecimals","type":"number","label":"Value decimals","default":0,"min":0,"max":3,"step":1},
|
||
{"id":"accent","type":"color","label":"Leader accent","default":"#c8452d"}
|
||
]'
|
||
>
|
||
<div id="bcr-stage" class="clip" data-start="0" data-duration="12" data-track-index="0">
|
||
<div id="bcr-bg"></div>
|
||
|
||
<div id="bcr-head">
|
||
<div id="bcr-head-left">
|
||
<h1 id="bcr-title">Streaming Subscribers by Service</h1>
|
||
<p id="bcr-subtitle">Ranked by reported subscribers</p>
|
||
</div>
|
||
<div id="bcr-head-right">
|
||
<span id="bcr-period-caption">Period</span>
|
||
<span id="bcr-period">2019</span>
|
||
</div>
|
||
</div>
|
||
|
||
<!-- Rows live here, one per series, positioned by rank. -->
|
||
<div id="bcr-plot"></div>
|
||
|
||
<!-- Axis is painted above the rows: the tick labels sliding left is the
|
||
visible evidence that the scale is rescaling as values climb. -->
|
||
<div id="bcr-axis"></div>
|
||
|
||
<p id="bcr-source">Placeholder data</p>
|
||
</div>
|
||
|
||
<style>
|
||
#bcr-root {
|
||
position: relative;
|
||
width: 1920px;
|
||
height: 1080px;
|
||
overflow: hidden;
|
||
font-family: Inter, sans-serif;
|
||
color: #1f1d1b;
|
||
}
|
||
|
||
#bcr-stage {
|
||
position: absolute;
|
||
inset: 0;
|
||
}
|
||
|
||
/* Scene fill goes on a full-bleed child, never the composition root. */
|
||
#bcr-bg {
|
||
position: absolute;
|
||
inset: 0;
|
||
background-color: #f5f3ef;
|
||
}
|
||
|
||
#bcr-head {
|
||
position: absolute;
|
||
top: 58px;
|
||
left: 96px;
|
||
width: 1728px;
|
||
display: flex;
|
||
align-items: flex-start;
|
||
justify-content: space-between;
|
||
}
|
||
|
||
#bcr-title {
|
||
font-size: 46px;
|
||
font-weight: 700;
|
||
letter-spacing: -0.015em;
|
||
line-height: 1.1;
|
||
}
|
||
|
||
#bcr-subtitle {
|
||
margin-top: 10px;
|
||
font-size: 19px;
|
||
font-weight: 400;
|
||
color: #6b6560;
|
||
}
|
||
|
||
#bcr-head-right {
|
||
display: flex;
|
||
flex-direction: column;
|
||
align-items: flex-end;
|
||
}
|
||
|
||
#bcr-period-caption {
|
||
font-size: 15px;
|
||
font-weight: 600;
|
||
letter-spacing: 0.18em;
|
||
text-transform: uppercase;
|
||
color: #6b6560;
|
||
}
|
||
|
||
#bcr-period {
|
||
margin-top: 4px;
|
||
font-size: 72px;
|
||
font-weight: 700;
|
||
line-height: 1;
|
||
font-variant-numeric: tabular-nums;
|
||
letter-spacing: -0.02em;
|
||
}
|
||
|
||
#bcr-plot {
|
||
position: absolute;
|
||
left: 0;
|
||
top: 236px;
|
||
width: 1920px;
|
||
height: 760px;
|
||
overflow: hidden;
|
||
}
|
||
|
||
.bcr-row {
|
||
position: absolute;
|
||
left: 0;
|
||
top: 0;
|
||
width: 1920px;
|
||
}
|
||
|
||
/* Rows are transparent so both bars of an overtake stay visible sliding
|
||
past each other; only the two TEXT blocks carry an opaque backing, so
|
||
the front row's label covers the one it crosses instead of tangling
|
||
with it. */
|
||
.bcr-name {
|
||
position: absolute;
|
||
left: 96px;
|
||
width: 272px;
|
||
top: 50%;
|
||
transform: translateY(-50%);
|
||
text-align: right;
|
||
font-size: 26px;
|
||
font-weight: 600;
|
||
line-height: 1.7;
|
||
white-space: nowrap;
|
||
overflow: hidden;
|
||
text-overflow: ellipsis;
|
||
background-color: #f5f3ef;
|
||
}
|
||
|
||
.bcr-bar {
|
||
position: absolute;
|
||
left: 400px;
|
||
top: 50%;
|
||
transform: translateY(-50%);
|
||
border-radius: 3px;
|
||
background-color: #1f1d1b;
|
||
}
|
||
|
||
.bcr-value {
|
||
position: absolute;
|
||
left: 404px;
|
||
top: 50%;
|
||
padding: 0 12px;
|
||
font-size: 26px;
|
||
font-weight: 600;
|
||
line-height: 1.7;
|
||
font-variant-numeric: tabular-nums;
|
||
white-space: nowrap;
|
||
background-color: #f5f3ef;
|
||
}
|
||
|
||
#bcr-axis {
|
||
position: absolute;
|
||
inset: 0;
|
||
z-index: 5000;
|
||
}
|
||
|
||
.bcr-tick-line {
|
||
position: absolute;
|
||
top: 232px;
|
||
left: 0;
|
||
width: 1px;
|
||
height: 768px;
|
||
background-color: rgba(31, 29, 27, 0.11);
|
||
}
|
||
|
||
.bcr-tick-line.bcr-tick-zero {
|
||
background-color: rgba(31, 29, 27, 0.5);
|
||
}
|
||
|
||
.bcr-tick-label {
|
||
position: absolute;
|
||
top: 198px;
|
||
left: 0;
|
||
font-size: 17px;
|
||
font-weight: 500;
|
||
font-variant-numeric: tabular-nums;
|
||
color: #6b6560;
|
||
white-space: nowrap;
|
||
}
|
||
|
||
#bcr-source {
|
||
position: absolute;
|
||
left: 96px;
|
||
top: 1014px;
|
||
font-size: 16px;
|
||
color: #6b6560;
|
||
}
|
||
</style>
|
||
|
||
<script>
|
||
(function () {
|
||
"use strict";
|
||
|
||
// ---- variables -------------------------------------------------
|
||
// The declaration attribute is the single source of truth: when the
|
||
// runtime is absent (raw file open) we parse the same attribute.
|
||
function readVars() {
|
||
// Read the declaration off THIS block's own root, never
|
||
// document.documentElement: mounted as a sub-composition the block's
|
||
// <html> is discarded and documentElement is the HOST's, so a
|
||
// documentElement read returns the wrong element (or null) and the
|
||
// block renders with no series at all. Runtime / host / --variables
|
||
// values are layered on top as overrides, so the block does not
|
||
// depend on the runtime being injected before this script runs.
|
||
var out = {};
|
||
var root = document.getElementById("bcr-root");
|
||
try {
|
||
JSON.parse(root.getAttribute("data-composition-variables")).forEach(function (d) {
|
||
out[d.id] = d.default;
|
||
});
|
||
} catch (err) {
|
||
// Declaration unreadable; the per-variable literal fallbacks below
|
||
// still produce a renderable composition.
|
||
}
|
||
var hf = window.__hyperframes;
|
||
var overrides =
|
||
hf && typeof hf.getVariables === "function"
|
||
? hf.getVariables()
|
||
: window.__hfVariables;
|
||
if (overrides && typeof overrides === "object") {
|
||
for (var key in overrides) {
|
||
if (overrides[key] !== undefined) out[key] = overrides[key];
|
||
}
|
||
}
|
||
return out;
|
||
}
|
||
|
||
function num(value, fallback, lo, hi) {
|
||
var n = typeof value === "number" ? value : Number.parseFloat(value);
|
||
if (!Number.isFinite(n)) n = fallback;
|
||
return Math.min(hi, Math.max(lo, n));
|
||
}
|
||
|
||
function str(value, fallback) {
|
||
return typeof value === "string" && value.length > 0 ? value : fallback;
|
||
}
|
||
|
||
var V = readVars();
|
||
var ACCENT = str(V.accent, "#c8452d");
|
||
var BAR_COLOR = "#1f1d1b";
|
||
var BAR_COUNT = Math.round(num(V.barCount, 6, 1, 24));
|
||
var PERIOD_DURATION = num(V.periodDuration, 2, 0.1, 30);
|
||
var DECIMALS = Math.round(num(V.valueDecimals, 0, 0, 6));
|
||
var PREFIX = typeof V.valuePrefix === "string" ? V.valuePrefix : "";
|
||
var SUFFIX = typeof V.valueSuffix === "string" ? V.valueSuffix : "";
|
||
|
||
// ---- data format ------------------------------------------------
|
||
// Wide table, one series per line: "Name: v1, v2, v3".
|
||
// `;` is accepted as a line separator so the whole table survives a
|
||
// single-line text input. Short rows hold their last value.
|
||
function parsePeriods(text) {
|
||
return String(text)
|
||
.split(",")
|
||
.map(function (s) {
|
||
return s.trim();
|
||
})
|
||
.filter(function (s) {
|
||
return s.length > 0;
|
||
});
|
||
}
|
||
|
||
function parseSeries(text, periodCount) {
|
||
var out = [];
|
||
var lines = String(text).split(/[\n;]+/);
|
||
for (var i = 0; i < lines.length; i++) {
|
||
var line = lines[i].trim();
|
||
if (!line) continue;
|
||
var split = line.indexOf(":");
|
||
if (split < 0) continue;
|
||
var label = line.slice(0, split).trim();
|
||
if (!label) continue;
|
||
var values = line
|
||
.slice(split + 1)
|
||
.split(",")
|
||
.map(function (s) {
|
||
return Number.parseFloat(s.trim());
|
||
})
|
||
.filter(function (n) {
|
||
return Number.isFinite(n);
|
||
});
|
||
if (values.length === 0) continue;
|
||
while (values.length < periodCount) values.push(values[values.length - 1]);
|
||
out.push({ label: label, values: values.slice(0, periodCount) });
|
||
}
|
||
return out;
|
||
}
|
||
|
||
var PERIODS = parsePeriods(str(V.periods, "2019, 2020, 2021, 2022, 2023, 2024"));
|
||
if (PERIODS.length === 0) PERIODS = ["1"];
|
||
var SERIES = parseSeries(str(V.series, ""), PERIODS.length);
|
||
var T = PERIODS.length;
|
||
var N = SERIES.length;
|
||
|
||
// ---- closed-form state ------------------------------------------
|
||
// k = 10 interpolated keyframes per period (Bostock's number). Rank is
|
||
// computed at each keyframe from the interpolated value and baked once;
|
||
// a bar's on-screen row is then solved FROM rank, so two bars can never
|
||
// cross without swapping. Everything below is a pure function of t.
|
||
var K = 10;
|
||
var KF_DURATION = PERIOD_DURATION / K;
|
||
var KF_COUNT = T > 1 ? (T - 1) * K + 1 : 1;
|
||
var RACE_SECONDS = T > 1 ? (T - 1) * PERIOD_DURATION : 0;
|
||
|
||
function clamp(v, lo, hi) {
|
||
return v < lo ? lo : v > hi ? hi : v;
|
||
}
|
||
|
||
function valueAt(t, series) {
|
||
if (T < 2) return series.values[0];
|
||
var u = t / PERIOD_DURATION;
|
||
var i = clamp(Math.floor(u), 0, T - 2);
|
||
var f = clamp(u - i, 0, 1);
|
||
return series.values[i] + (series.values[i + 1] - series.values[i]) * f;
|
||
}
|
||
|
||
// ranks[m][j] = integer rank of series j at keyframe m (0 = leader).
|
||
var RANKS = [];
|
||
for (var m = 0; m < KF_COUNT; m++) {
|
||
var tm = m * KF_DURATION;
|
||
var order = SERIES.map(function (s, j) {
|
||
return { j: j, v: valueAt(tm, s) };
|
||
});
|
||
// Descending by value; index breaks ties so the sort is total and
|
||
// therefore identical on every evaluation.
|
||
order.sort(function (a, b) {
|
||
return b.v - a.v || a.j - b.j;
|
||
});
|
||
var row = new Array(N);
|
||
for (var r = 0; r < order.length; r++) row[order[r].j] = r;
|
||
RANKS.push(row);
|
||
}
|
||
|
||
function smoothstep(x) {
|
||
return x * x * (3 - 2 * x);
|
||
}
|
||
|
||
// Continuous row position solved from the baked ranks. A rank change
|
||
// between two adjacent keyframes IS the swap, and it plays out over one
|
||
// keyframe interval (PERIOD_DURATION / 10) instead of snapping.
|
||
function rankPosAt(t, j) {
|
||
if (KF_COUNT < 2) return RANKS[0][j];
|
||
var m = t / KF_DURATION;
|
||
var m0 = clamp(Math.floor(m), 0, KF_COUNT - 2);
|
||
var e = smoothstep(clamp(m - m0, 0, 1));
|
||
var a = RANKS[m0][j];
|
||
var b = RANKS[m0 + 1][j];
|
||
return a + (b - a) * e;
|
||
}
|
||
|
||
// ---- formatting --------------------------------------------------
|
||
function formatValue(v) {
|
||
return (
|
||
PREFIX +
|
||
v.toLocaleString("en-US", {
|
||
minimumFractionDigits: DECIMALS,
|
||
maximumFractionDigits: DECIMALS,
|
||
}) +
|
||
SUFFIX
|
||
);
|
||
}
|
||
|
||
function hexToRgb(hex) {
|
||
var h = String(hex).trim().replace("#", "");
|
||
if (h.length === 3) h = h[0] + h[0] + h[1] + h[1] + h[2] + h[2];
|
||
var n = Number.parseInt(h, 16);
|
||
if (!Number.isFinite(n)) return [31, 29, 27];
|
||
return [(n >> 16) & 255, (n >> 8) & 255, n & 255];
|
||
}
|
||
|
||
// Accent is the only colour in the piece and it carries exactly one
|
||
// meaning: this bar currently leads. It is binary, not blended — a
|
||
// half-accent bar would assert "half leading", which is not a fact.
|
||
// It hands over at the instant the two values cross, which is also the
|
||
// instant the two bars are the same length, so the handover lands on
|
||
// the overtake instead of drifting near it. Flat fill, never a
|
||
// gradient: a gradient inside a bar makes the longest bar the palest
|
||
// exactly where the eye is comparing lengths.
|
||
function hexToCss(hex) {
|
||
var rgb = hexToRgb(hex);
|
||
return "rgb(" + rgb[0] + ", " + rgb[1] + ", " + rgb[2] + ")";
|
||
}
|
||
|
||
var BAR_FILL = hexToCss(BAR_COLOR);
|
||
var ACCENT_FILL = hexToCss(ACCENT);
|
||
|
||
function niceStep(x) {
|
||
var e = Math.pow(10, Math.floor(Math.log10(x)));
|
||
var f = x / e;
|
||
return e * (f <= 1 ? 1 : f <= 2 ? 2 : f <= 5 ? 5 : 10);
|
||
}
|
||
|
||
// ---- geometry ----------------------------------------------------
|
||
var TRACK_X = 400;
|
||
var TRACK_W = 1180;
|
||
var PLOT_H = 760;
|
||
var PITCH = PLOT_H / BAR_COUNT;
|
||
var BAR_H = Math.max(12, PITCH * 0.62);
|
||
var TICK_POOL = 12;
|
||
|
||
// ---- DOM ---------------------------------------------------------
|
||
var plot = document.getElementById("bcr-plot");
|
||
var axis = document.getElementById("bcr-axis");
|
||
var periodEl = document.getElementById("bcr-period");
|
||
document.getElementById("bcr-title").textContent = str(
|
||
V.title,
|
||
"Streaming Subscribers by Service",
|
||
);
|
||
document.getElementById("bcr-subtitle").textContent = str(
|
||
V.subtitle,
|
||
"Ranked by reported subscribers",
|
||
);
|
||
|
||
var rows = SERIES.map(function (s) {
|
||
var row = document.createElement("div");
|
||
row.className = "bcr-row";
|
||
row.style.height = PITCH + "px";
|
||
|
||
// Declared, not silenced: two rows mid-overtake genuinely occupy the
|
||
// same band for ~200ms. Readability is handled by the opaque chip on
|
||
// each label, so the front one is always legible.
|
||
var name = document.createElement("div");
|
||
name.className = "bcr-name";
|
||
name.setAttribute("data-layout-allow-overlap", "");
|
||
name.textContent = s.label;
|
||
|
||
var bar = document.createElement("div");
|
||
bar.className = "bcr-bar";
|
||
bar.style.height = BAR_H + "px";
|
||
|
||
var value = document.createElement("div");
|
||
value.className = "bcr-value";
|
||
value.setAttribute("data-layout-allow-overlap", "");
|
||
|
||
row.appendChild(name);
|
||
row.appendChild(bar);
|
||
row.appendChild(value);
|
||
plot.appendChild(row);
|
||
return { row: row, bar: bar, value: value };
|
||
});
|
||
|
||
var ticks = [];
|
||
for (var k = 0; k < TICK_POOL; k++) {
|
||
var line = document.createElement("div");
|
||
line.className = "bcr-tick-line" + (k === 0 ? " bcr-tick-zero" : "");
|
||
var label = document.createElement("div");
|
||
label.className = "bcr-tick-label";
|
||
axis.appendChild(line);
|
||
axis.appendChild(label);
|
||
ticks.push({ line: line, label: label });
|
||
}
|
||
|
||
// ---- render ------------------------------------------------------
|
||
function render(t) {
|
||
if (N === 0) return;
|
||
|
||
var values = SERIES.map(function (s) {
|
||
return valueAt(t, s);
|
||
});
|
||
// Paint order follows the CURRENT value, not the row position: the
|
||
// bar that has just edged ahead comes forward, so at the instant two
|
||
// bars are superimposed the frame shows the one that is overtaking
|
||
// (its bar and its label together) rather than the one it passed.
|
||
var byValue = values
|
||
.map(function (v, i) {
|
||
return i;
|
||
})
|
||
.sort(function (a, b) {
|
||
return values[b] - values[a] || a - b;
|
||
});
|
||
var zRank = new Array(values.length);
|
||
for (var q = 0; q < byValue.length; q++) zRank[byValue[q]] = q;
|
||
var leader = byValue[0];
|
||
var maxValue = values[leader];
|
||
// Headroom keeps the leader off the frame edge; the domain is a
|
||
// continuous function of t, so the axis glides instead of stepping.
|
||
var scaleMax = Math.max(maxValue * 1.06, 1e-6);
|
||
var step = niceStep(scaleMax / 4);
|
||
|
||
for (var i = 0; i < TICK_POOL; i++) {
|
||
var tv = i * step;
|
||
var visible = tv <= scaleMax;
|
||
var tx = TRACK_X + (tv / scaleMax) * TRACK_W;
|
||
ticks[i].line.style.transform = "translateX(" + tx.toFixed(2) + "px)";
|
||
ticks[i].line.style.opacity = visible ? "1" : "0";
|
||
ticks[i].label.style.transform =
|
||
"translateX(" + tx.toFixed(2) + "px) translateX(-50%)";
|
||
ticks[i].label.style.opacity = visible ? "1" : "0";
|
||
ticks[i].label.textContent = visible ? formatValue(tv) : "";
|
||
}
|
||
|
||
for (var j = 0; j < rows.length; j++) {
|
||
var rankPos = rankPosAt(t, j);
|
||
var barW = (values[j] / scaleMax) * TRACK_W;
|
||
var el = rows[j];
|
||
|
||
el.row.style.transform = "translateY(" + (rankPos * PITCH).toFixed(2) + "px)";
|
||
// Fades out only as it slides past the last visible slot.
|
||
el.row.style.opacity = clamp(BAR_COUNT - rankPos, 0, 1).toFixed(3);
|
||
el.row.style.zIndex = String(1000 - zRank[j]);
|
||
|
||
el.bar.style.width = barW.toFixed(2) + "px";
|
||
el.bar.style.backgroundColor = j === leader ? ACCENT_FILL : BAR_FILL;
|
||
|
||
el.value.style.transform = "translate(" + barW.toFixed(2) + "px, -50%)";
|
||
el.value.textContent = formatValue(values[j]);
|
||
}
|
||
|
||
var pIndex = clamp(Math.floor(t / PERIOD_DURATION), 0, T - 1);
|
||
periodEl.textContent = PERIODS[pIndex];
|
||
}
|
||
|
||
// ---- timeline ----------------------------------------------------
|
||
// A property SETTER drives the per-frame work: tl.eventCallback("onUpdate")
|
||
// does not fire on tl.seek(), a tweened accessor does.
|
||
var driver = { _t: 0 };
|
||
Object.defineProperty(driver, "t", {
|
||
get: function () {
|
||
return this._t;
|
||
},
|
||
set: function (value) {
|
||
this._t = value;
|
||
render(value);
|
||
},
|
||
});
|
||
|
||
var tl = gsap.timeline({ paused: true });
|
||
if (RACE_SECONDS > 0) {
|
||
tl.to(driver, { t: RACE_SECONDS, duration: RACE_SECONDS, ease: "none" }, 0);
|
||
}
|
||
render(0);
|
||
|
||
window.__timelines = window.__timelines || {};
|
||
window.__timelines["bar-chart-race"] = tl;
|
||
})();
|
||
</script>
|
||
</div>
|
||
</body>
|
||
</html>
|
||
```
|
||
|
||
</Accordion>
|
||
|
||
{/* hf:generated-footer */}
|
||
|
||
Tagged `data` `chart` `statistics` `ranking`.
|
||
|
||
## Related topics
|
||
|
||
- [Browse the complete Catalog](/catalog)
|
||
- [Add assets and Catalog items in Studio](/studio/assets-and-blocks)
|
||
- [Build a richer composition](/go-further)
|