Loadersanimated

Comet

A bright head dragging a fading tail around a circular track.

Installation

caveui components are copy-paste Jetpack Compose built entirely on Material 3 — there's no caveui dependency to add. Make sure Material 3 is on your classpath (it ships with the Compose BOM), then copy the Usage snippet below into your project.

kotlin

// build.gradle.kts (module)
dependencies {
    implementation(platform("androidx.compose:compose-bom:2025.06.00"))
    implementation("androidx.compose.material3:material3")
}

Usage

kotlin

val t = rememberInfiniteTransition(label = "comet")
val angle by t.animateFloat(
    initialValue = 0f,
    targetValue = 360f,
    animationSpec = infiniteRepeatable(tween(900, easing = LinearEasing)),
    label = "angle",
)
val primary = MaterialTheme.colorScheme.primary
Canvas(Modifier.size(32.dp).rotate(angle)) {
    drawArc(
        brush = Brush.sweepGradient(listOf(Color.Transparent, primary)),
        startAngle = 0f,
        sweepAngle = 320f,
        useCenter = false,
        style = Stroke(width = 3.dp.toPx(), cap = StrokeCap.Round),
    )
    drawCircle(
        color = primary,
        radius = 2.dp.toPx(),
        center = Offset(size.width, size.height / 2f),
    )
}