Stats & Numbers
Semi-Circle Gauge Meter
A half-circle gauge with a trig-computed needle, a swept zone band and a worded verdict pill — never colour alone.
$ velocityx add semi-circle-gauge-meterBuilt for astro.
Full docs for Semi-Circle Gauge Meter →
Needs a licence key — buy lifetime access here, then
velocityx login once.
| Value | NaN |
|---|---|
| Scale | 0 to 100 |
| Needs attention, up to | 33 |
| Fair, up to | 66 |
| Good, up to | 100 |
- Framework
- astro
- Source
- 277 lines
- SemiCircleGaugeMeter.astro
- Runtime
- Interactive
- runs in the browser
- Theme
- 5 tokens
- re-themes from your scale
- Responsive
- sm
- 1 breakpoint
- Dark mode
- Built in
- dark: variants
- Accessibility
- 6 ARIA
- attributes and roles
Props
| Name | Type | Required | Default | Description |
|---|---|---|---|---|
| value | number | Yes | Current value. Clamped into [0, max]. | |
| max | number | No | 100 | |
| label | string | No | 'Score' | |
| valueText | string | No | Pre-formatted override for the centre value text, e.g. "82%". | |
| unit | string | No | '' | |
| zones | GaugeZone[] | No | [ { upTo: max * 0.33, verdict: 'Needs attention' }, { upTo: max * 0.66, verdict: 'Fair' }, { upTo: max, verdict: 'Good' }, ] | Ascending zone cutoffs with their worded verdicts. Defaults to a three-band poor/fair/good split of `max`. |
| className | string | No | '' |
Using it
The smallest call that compiles — required props only. The import is
written for your own file at src/components/Example.astro;
adjust the relative import if yours sits elsewhere.
Everything optional is in the table above, with its default.
---
import SemiCircleGaugeMeter from './velocity/semi-circle-gauge-meter/SemiCircleGaugeMeter.astro';
---
<SemiCircleGaugeMeter
value={0}
/>Built from Semi-Circle Gauge Meter's own prop signature and the path the CLI installs it to, so it can't drift from either.
Accessibility
- ARIA roles
- meter
- ARIA attributes
- aria-hidden, aria-label, aria-valuemax, aria-valuemin, aria-valuenow
- Screen readers
- Ships screen-reader-only text
- Motion
- Respects prefers-reduced-motion
Read from the source, not asserted — anything not listed simply isn't in this component's markup.
Behaviour
- Ships client JS
- Yes — this one needs to hydrate
- Browser APIs
- matchMedia, IntersectionObserver
- Breakpoints
- sm:
- Dark mode
- Carries its own dark: variants
Theming
This component paints from 5 steps of
your theme scale — no hardcoded colours, and no font-family of
its own, so your type cascade wins. Override the variables and it follows.
primary-100primary-400primary-600primary-700primary-900Get the Velocity preset and CSS theme from the public source guide. The CLI theme command is not available on npm yet.
File this creates
The CLI writes this path into your project — nothing
else moves. Paths are under your source root, which defaults to
src/; pass
--dest if yours is elsewhere.
-
src/components/velocity/semi-circle-gauge-meter/SemiCircleGaugeMeter.astro277 lines
Copy the paths
src/components/velocity/semi-circle-gauge-meter/SemiCircleGaugeMeter.astroSemi-Circle Gauge Meter — questions
How do I install Semi-Circle Gauge Meter?
Run velocityx add semi-circle-gauge-meter . The CLI writes the source straight into your project — it is not a runtime package dependency.
Do I need a licence for Semi-Circle Gauge Meter?
Yes. It is part of the lifetime library — buy access at https://aidxn.com/shop/velocity-x-component-library/, authenticate once, and install it. Your lifetime licence includes future component updates.
Can I edit Semi-Circle Gauge Meter after installing it?
Yes — the files are yours once written. The CLI compares its lockfile hash before upgrades and refuses to overwrite code you changed.
Does Semi-Circle Gauge Meter ship JavaScript to my users?
Yes. It runs in the browser and uses matchMedia, IntersectionObserver, so it needs to hydrate — in Astro, give it a client:* directive.
Will Semi-Circle Gauge Meter match my brand colours?
Yes. It paints entirely from your theme scale — 5 steps of primary-* / accent-* — with no hardcoded hex values and no font-family of its own. Override the theme CSS variables and it follows your design system instead of ours.
Is Semi-Circle Gauge Meter accessible?
It ships ARIA roles (meter), 5 ARIA attributes. That is read directly from the source rather than claimed — you should still test it in the context you drop it into.
Does Semi-Circle Gauge Meter work on mobile?
It carries its own responsive rules at the sm breakpoint, so it re-flows rather than relying on the page around it to do the work.
Does Semi-Circle Gauge Meter pull in any dependencies?
No external ones. Every component in the library is built with react/react-dom or plain Astro only — no GSAP, Radix, Swiper or Headless UI — which is what makes dropping it into an existing project safe.
Set up & reference
All docs →Install this component:
$ velocityx add semi-circle-gauge-meter- 2. Install the theme — run this first, once per project Do this once per project, before your first component.
- The palette gotcha — this one bites silently Silent failure — the component renders, just unstyled.
- Your edits are safe by default What happens to your changes when you upgrade.
- You own the code What you are actually buying.
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