IssueTracker

Component used: Graphics

Version used: 1.0.0-rc01

Devices/Android versions reproduced on: Pixel 8, Xiaomi 11T, Samsung S22. Seen on Android 13 and 14 so far.

Since updating my compose-foundation version to 1.7.0-beta07 I've started getting a crash in the graphics library when trying to construct a RoundedPolygon shape (a hexagon): Fatal Exception: java.lang.IllegalArgumentException Can't get the direction of a 0-length vector

Here is the code for creating my shape:

class HexagonShape : Shape {

    override fun createOutline(
        size: Size,
        layoutDirection: LayoutDirection,
        density: Density,
    ): Outline {
        val hexagon = RoundedPolygon(
            numVertices = 6,
            radius = size.minDimension / 2f,
            centerX = size.width / 2f,
            centerY = size.height / 2f,
            rounding = CornerRounding(
                size.minDimension / 8f,
                smoothing = 0.1f,
            ),
        )

        return Outline.Generic(
            path = hexagon.toPath().asComposePath(),
        )
    }
}

And here's roughly how it's used:

@Composable
fun TokenImageView(
    imageUrl: String?,
    modifier: Modifier = Modifier,
) {
    val hexagonShape = remember { HexagonShape() }

    BoxWithConstraints(
        modifier = modifier,
        contentAlignment = Alignment.Center,
    ) {
        val minViewDimension = maxWidth.coerceAtMost(maxHeight)
        Box(
            modifier = Modifier
                .graphicsLayer {
                    this.shape = hexagonShape
                    this.clip = true
                },
        ) {
            RemoteImage(
                url = imageUrl,
                modifier = Modifier.aspectRatio(1f),
            )
        }
    }
}

As I mentioned that code was working perfectly until I updated my compose version and is now intermittently crashing – not on first draw, but seemingly when returning to a screen after a while (e.g. after backgrounding).

Here's a stack trace:

 Fatal Exception: java.lang.IllegalArgumentException: Can't get the direction of a 0-length vector
       at androidx.graphics.shapes.PointKt.getDirection-DnnuFBc(Point.kt:63)
       at androidx.graphics.shapes.RoundedCorner.<init>(RoundedPolygon.kt:484)
       at androidx.graphics.shapes.RoundedCorner.<init>(RoundedPolygon.kt:1)
       at androidx.graphics.shapes.RoundedPolygonKt.RoundedPolygon(RoundedPolygon.kt:340)
       at androidx.graphics.shapes.RoundedPolygonKt.RoundedPolygon(RoundedPolygon.kt:274)
       at androidx.graphics.shapes.RoundedPolygonKt.RoundedPolygon$default(RoundedPolygon.kt:266)
       at io.floornfts.design.component.HexagonShape.createOutline-Pq9zytI(TokenImageView.kt:105)
       at androidx.compose.ui.graphics.ReusableGraphicsLayerScope.updateOutline$ui_release(GraphicsLayerScope.kt:461)
       at androidx.compose.ui.node.NodeCoordinator$updateLayerParameters$1.invoke(NodeCoordinator.kt:540)
       at androidx.compose.ui.node.NodeCoordinator$updateLayerParameters$1.invoke(NodeCoordinator.kt:538)
       at androidx.compose.runtime.snapshots.Snapshot.enter(Snapshot.java:140)
       at androidx.compose.runtime.snapshots.Snapshot$Companion.observe(Snapshot.kt:529)
       at androidx.compose.runtime.snapshots.SnapshotStateObserver$ObservedScopeMap.observe(SnapshotStateObserver.kt:502)
       at androidx.compose.runtime.snapshots.SnapshotStateObserver.observeReads(SnapshotStateObserver.kt:258)
       at androidx.compose.ui.node.OwnerSnapshotObserver.observeReads$ui_release(OwnerSnapshotObserver.kt:133)
       at androidx.compose.ui.node.NodeCoordinator.updateLayerParameters(NodeCoordinator.kt:538)
       at androidx.compose.ui.node.NodeCoordinator.updateLayerParameters$default(NodeCoordinator.kt:524)
       at androidx.compose.ui.node.NodeCoordinator.updateLayerBlock(NodeCoordinator.kt:503)
       at androidx.compose.ui.graphics.SimpleGraphicsLayerModifier.invalidateLayerBlock(GraphicsLayerModifier.kt:636)
       at androidx.compose.ui.graphics.GraphicsLayerElement.update(GraphicsLayerModifier.kt:442)
       at androidx.compose.ui.graphics.GraphicsLayerElement.update(GraphicsLayerModifier.kt:383)
       at androidx.compose.ui.node.NodeChainKt.updateUnsafe(NodeChain.kt:817)
       at androidx.compose.ui.node.NodeChainKt.access$updateUnsafe(NodeChain.kt:1)
       at androidx.compose.ui.node.NodeChain.updateNode(NodeChain.kt:661)
       at androidx.compose.ui.node.NodeChain.updateFrom$ui_release(NodeChain.kt:142)
       at androidx.compose.ui.node.LayoutNode.applyModifier(LayoutNode.kt:928)
       at androidx.compose.ui.node.LayoutNode.setModifier(LayoutNode.kt:920)
       at androidx.compose.ui.node.ComposeUiNode$Companion$SetModifier$1.invoke(ComposeUiNode.kt:47)
       at androidx.compose.ui.node.ComposeUiNode$Companion$SetModifier$1.invoke(ComposeUiNode.kt:47)
       at androidx.compose.runtime.changelist.Operation$UpdateNode.execute(Operation.kt:449)
       at androidx.compose.runtime.changelist.Operations.executeAndFlushAllPendingOperations(Operations.kt:309)
       at androidx.compose.runtime.changelist.ChangeList.executeAndFlushAllPendingChanges(ChangeList.kt:81)
       at androidx.compose.runtime.CompositionImpl.applyChangesInLocked(Composition.kt:984)
       at androidx.compose.runtime.CompositionImpl.applyChanges(Composition.kt:1013)
       at androidx.compose.runtime.Recomposer$runRecomposeAndApplyChanges$2$1.invoke(Recomposer.kt:685)
       at androidx.compose.runtime.Recomposer$runRecomposeAndApplyChanges$2$1.invoke(Recomposer.kt:585)
       at androidx.compose.ui.platform.AndroidUiFrameClock$withFrameNanos$2$callback$1.doFrame(AndroidUiFrameClock.android.kt:41)
       at androidx.compose.ui.platform.AndroidUiDispatcher.performFrameDispatch(AndroidUiDispatcher.android.kt:109)
       at androidx.compose.ui.platform.AndroidUiDispatcher.access$setScheduledFrameDispatch$p(AndroidUiDispatcher.android.kt:41)
       at androidx.compose.ui.platform.AndroidUiDispatcher.access$performFrameDispatch(AndroidUiDispatcher.android.kt:41)
       at androidx.compose.ui.platform.AndroidUiDispatcher$dispatchCallback$1.doFrame(AndroidUiDispatcher.android.kt:69)
       at android.view.Choreographer$CallbackRecord.run(Choreographer.java:1669)
       at android.view.Choreographer$CallbackRecord.run(Choreographer.java:1680)
       at android.view.Choreographer.doCallbacks(Choreographer.java:1191)
       at android.view.Choreographer.doFrame(Choreographer.java:1057)
       at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:1650)
       at android.os.Handler.handleCallback(Handler.java:958)
       at android.os.Handler.dispatchMessage(Handler.java:99)
       at android.os.Looper.loopOnce(Looper.java:222)
       at android.os.Looper.loop(Looper.java:314)
       at android.app.ActivityThread.main(ActivityThread.java:8706)
       at java.lang.reflect.Method.invoke(Method.java)
       at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:565)
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1081)