Created
December 11, 2023 13:12
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Oscillating Heart Animation using jetpack compose
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import androidx.compose.animation.core.Animatable | |
import androidx.compose.animation.core.InfiniteRepeatableSpec | |
import androidx.compose.animation.core.RepeatMode | |
import androidx.compose.animation.core.tween | |
import androidx.compose.foundation.background | |
import androidx.compose.foundation.layout.Arrangement | |
import androidx.compose.foundation.layout.Box | |
import androidx.compose.foundation.layout.Column | |
import androidx.compose.foundation.layout.fillMaxSize | |
import androidx.compose.foundation.layout.padding | |
import androidx.compose.foundation.layout.size | |
import androidx.compose.material.icons.Icons | |
import androidx.compose.material.icons.filled.Favorite | |
import androidx.compose.material3.Icon | |
import androidx.compose.runtime.Composable | |
import androidx.compose.runtime.LaunchedEffect | |
import androidx.compose.runtime.remember | |
import androidx.compose.ui.Alignment | |
import androidx.compose.ui.Modifier | |
import androidx.compose.ui.draw.drawBehind | |
import androidx.compose.ui.geometry.Offset | |
import androidx.compose.ui.graphics.Color | |
import androidx.compose.ui.graphics.graphicsLayer | |
import androidx.compose.ui.graphics.lerp | |
import androidx.compose.ui.tooling.preview.Preview | |
import androidx.compose.ui.unit.dp | |
import com.techullurgy.composeuisapplication.math.map | |
import kotlinx.coroutines.launch | |
@Preview | |
@Composable | |
private fun OscillatingHeartAnimation() { | |
Column( | |
modifier = Modifier | |
.fillMaxSize() | |
.background(Color(200, 100, 0)), | |
verticalArrangement = Arrangement.Bottom, | |
horizontalAlignment = Alignment.CenterHorizontally | |
) { | |
val translationValue = remember { Animatable(0f) } | |
LaunchedEffect(key1 = Unit) { | |
launch { | |
translationValue.animateTo( | |
targetValue = -100f, | |
animationSpec = InfiniteRepeatableSpec( | |
animation = tween(800), | |
repeatMode = RepeatMode.Reverse | |
) | |
) | |
} | |
} | |
Box( | |
modifier = Modifier | |
.padding(bottom = 60.dp) | |
.drawBehind { | |
val startX = map(translationValue.value, -100f, 0f, 0f, .5f) | |
val startOffset = Offset(center.x - (size.width * startX), size.height) | |
val endOffset = Offset(center.x + (size.width * startX), size.height) | |
drawLine(color = Color.White, strokeWidth = 3.dp.toPx(), start = startOffset, end = endOffset) | |
}, | |
contentAlignment = Alignment.Center | |
) { | |
val animationProgress = map(translationValue.value, -100f, 0f, 0f, 1f) | |
val animatedColor = lerp(Color.White, Color.Black, animationProgress) | |
Icon( | |
imageVector = Icons.Default.Favorite, | |
contentDescription = null, | |
tint = animatedColor, | |
modifier = Modifier | |
.size(100.dp) | |
.graphicsLayer { | |
val scaleFactor = map(translationValue.value, -100f, 0f, 3f, 1f) | |
scaleX = scaleFactor | |
scaleY = scaleFactor | |
translationY = translationValue.value * 8 | |
} | |
) | |
} | |
} | |
} |
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OscillatingHeartAnimation.mp4