Chartsanimated

Sunburst

A two-level sunburst whose inner categories fan out into child segments.

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

@Composable
fun Sunburst(
    inner: List<Pair<Float, Color>> = listOf(
        0.4f to Color(0xFF6366F1), 0.35f to Color(0xFF10B981), 0.25f to Color(0xFFF59E0B),
    ),
    outer: List<Float> = listOf(0.22f, 0.18f, 0.2f, 0.15f, 0.13f, 0.12f),
    modifier: Modifier = Modifier,
) {
    val sweep by animateFloatAsState(1f, tween(1000, easing = EaseOutCubic), label = "s")
    val hub = MaterialTheme.colorScheme.surface
    Canvas(modifier.size(150.dp)) {
        val rIn = size.minDimension * 0.28f
        val rOut = size.minDimension * 0.46f
        var a = -90f
        inner.forEach { (f, c) ->
            val deg = 360f * f
            drawArc(c, a, deg * sweep, true, topLeft = center - Offset(rIn, rIn), size = Size(rIn * 2, rIn * 2))
            a += deg
        }
        a = -90f
        outer.forEachIndexed { i, f ->
            val deg = 360f * f
            drawArc(
                inner[i % inner.size].second.copy(alpha = 0.55f),
                a, deg * sweep, true,
                topLeft = center - Offset(rOut, rOut), size = Size(rOut * 2, rOut * 2),
            )
            a += deg
        }
        drawCircle(hub, rIn * 0.45f, center)
    }
}