Loadersanimated

Fan arcs

Three concentric arcs of growing radius rotating as a layered fan.

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 = "fan")
val angle by t.animateFloat(
    initialValue = 0f,
    targetValue = 360f,
    animationSpec = infiniteRepeatable(tween(1300, easing = LinearEasing)),
    label = "angle",
)
val primary = MaterialTheme.colorScheme.primary
Canvas(Modifier.size(40.dp)) {
    repeat(3) { i ->
        val inset = i * 5.dp.toPx()
        val r = size.minDimension / 2f - inset
        rotate(angle + i * 40f) {
            drawArc(
                color = primary.copy(alpha = 1f - i * 0.25f),
                startAngle = 0f,
                sweepAngle = 90f,
                useCenter = false,
                topLeft = Offset(center.x - r, center.y - r),
                size = Size(r * 2, r * 2),
                style = Stroke(width = 3.dp.toPx(), cap = StrokeCap.Round),
            )
        }
    }
}