CardMeshGradient.kt

@Composable
fun CardGradient(modifier: Modifier = Modifier) {
    Card(
        modifier = Modifier.padding(16.dp).fillMaxWidth().aspectRatio(600 / 400f)
            .clip(RoundedCornerShape(16.dp))
    ) {
        Gradient()
    }
}


@Composable
fun Gradient() {
    Box(
        modifier = Modifier.fillMaxSize()
    ) {
        Layout(content = {
            Box(modifier = Modifier.fillMaxSize().drawWithContent {
                drawRect(
                    Brush.radialGradient(
                        colors = listOf(
                            Color(0xff3e91f0), Color.Transparent
                        ),
                        center = Offset(this.size.width * 0.05f, this.size.height / 2),
                        radius = size.width * 2,
                    )
                )
            })
            Box(modifier = Modifier.fillMaxSize().drawWithContent {
                drawRect(
                    Brush.radialGradient(
                        colors = listOf(
                            Color(0xffFF8A58), Color.Transparent
                        ),
                        center = Offset(0f, this.size.height),
                        radius = size.height,
                    )
                )
            })
            Box(modifier = Modifier.fillMaxSize().drawWithContent {
                drawRect(
                    Brush.radialGradient(
                        colors = listOf(
                            Color(0xff58EBFF), Color.Transparent
                        ),
                        center = Offset(
                            this.size.width * 1.1f, this.size.height * .100f
                        ),
                        radius = size.height,
                    )
                )
            })
            Box(modifier = Modifier.fillMaxSize().drawWithContent {
                drawRect(
                    Brush.radialGradient(
                        colors = listOf(
                            Color(0xff8c54eb), Color.Transparent
                        ),
                        center = Offset(
                            this.size.width, this.size.height * 0.9f
                        ),
                        radius = size.height,
                    )
                )
            })

        }, measurePolicy = { measurables, constraints ->
            val placeables = measurables.map { it.measure(constraints) }
            layout(constraints.maxWidth, constraints.maxHeight) {
                placeables.forEach { it.place(0, 0) }
            }
        })
    }
}