MEMBUAT ANIMASI SIMPLE

Tugas 5 - Membuat Animasi Simple

Nama : Wahyu Tri Saputro

NRP : 5025201217

Kelas : PPB - B

Tugas kelima kali ini adalah membuat sebuah simple animation berupa botol yang terisi oleh air. Buat class baru bernama WaterBottle, kemudian masukkan class tersebut ke MainActivity

MainActivity.kt

package com.example.simpleanimation

import android.graphics.Paint.Align
import android.os.Bundle
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Spacer
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.height
import androidx.compose.foundation.layout.width
import androidx.compose.material3.Button
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.Surface
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.setValue
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.tooling.preview.Preview
import androidx.compose.ui.unit.dp
import com.example.simpleanimation.ui.theme.SimpleAnimationTheme

class MainActivity : ComponentActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContent {
            SimpleAnimationTheme {
                // A surface container using the 'background' color from the theme
                Surface(
                    modifier = Modifier.fillMaxSize(),
                    color = MaterialTheme.colorScheme.background
                ) {

                    var usedAmount by remember {
                        mutableStateOf(400)
                    }

                    val totalWaterAmount = remember {
                        2400
                    }

                    Column (
                        modifier = Modifier.fillMaxSize(),
                        horizontalAlignment = Alignment.CenterHorizontally,
                        verticalArrangement = Arrangement.Center
                    ){
                        WaterBottle(totalWaterAmount = totalWaterAmount, unit = "ml", usedWaterAmount = usedAmount, modifier = Modifier.width(250.dp))
                        Spacer(modifier = Modifier.height(20.dp))
                        Text(text = "Total amount is : $$totalWaterAmount")
                        Button(onClick = { usedAmount += 200}) {
                            Text(text = "Drink")
                        }
                    }
                }
            }
        }
    }
}

WaterBottle.kt

package com.example.simpleanimation

import androidx.compose.animation.core.animateFloatAsState
import androidx.compose.animation.core.animateIntAsState
import androidx.compose.animation.core.tween
import androidx.compose.foundation.Canvas
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.height
import androidx.compose.foundation.layout.width
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.geometry.CornerRadius
import androidx.compose.ui.geometry.Offset
import androidx.compose.ui.geometry.Size
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.graphics.Path
import androidx.compose.ui.graphics.drawscope.clipPath
import androidx.compose.ui.text.SpanStyle
import androidx.compose.ui.text.buildAnnotatedString
import androidx.compose.ui.text.withStyle
import androidx.compose.ui.unit.dp
import androidx.compose.ui.unit.sp

@Composable
fun WaterBottle(
    modifier: Modifier = Modifier,
    totalWaterAmount: Int,
    unit: String,
    usedWaterAmount: Int,
    waterColor: Color = Color(0xff279eff),
    bottleColor: Color = Color.White,
    capColor: Color = Color(0xff0065b9)

    ) {

        val waterPercentage = animateFloatAsState(
            targetValue = usedWaterAmount.toFloat() / totalWaterAmount.toFloat(),
            label = "Water Waves Animation",
            animationSpec = tween(durationMillis = 1000)
        ).value

        val usedWaterAmountAnimation = animateIntAsState(
            targetValue = usedWaterAmount,
            label = "Used Water Amount Animation",
            animationSpec = tween(durationMillis = 1000)
        ).value

        Box(
            modifier = modifier
                .width(200.dp)
                .height(600.dp)
        ) {

            Canvas(
                modifier = Modifier.fillMaxSize()) {
                val width = size.width
                val height =  size.height

                val capWidth = size.width * 0.55f
                val capHeight = size.height * 0.13f

                val bottleBodyPath = Path().apply {
                    moveTo(
                        x = width * 0.3f, y = height * 0.1f
                    )
                    lineTo(
                        x = width * 0.3f, y = height * 0.2f
                    )
                    quadraticBezierTo(
                        x1 = 0f, y1 = height * 0.3f,
                        x2 = 0f, y2 = height * 0.4f
                    )
                    lineTo(
                        x = 0f,
                        y = height * 0.95f
                    )
                    quadraticBezierTo(
                        x1 = 0f, y1 = height,
                        x2 = width * 0.05f, y2 = height
                    )
                    lineTo(
                        x = width * 0.95f,
                        y = height
                    )
                    quadraticBezierTo(
                        x1 = width, y1 = height,
                        x2 = width, y2 = height * 0.95f
                    )
                    lineTo(
                        x = width,
                        y = height * 0.4f
                    )
                    quadraticBezierTo(
                        x1 = width, y1 = height * 0.3f,
                        x2 = width * 0.7f, y2 = height * 0.2f
                    )
                    lineTo(
                        x = width * 0.7f,
                        y = height * 0.1f
                    )
                    close()
                }
                clipPath(
                    bottleBodyPath
                ){
                    drawRect(
                        color = bottleColor,
                        size = size,
                    )

                    val waterWavesYPosition = (1 - waterPercentage) * size.height
                    val waterPath = Path().apply {
                        moveTo(
                            x = 0f,
                            y = waterWavesYPosition
                        )
                        lineTo(
                            x = size.width,
                            y = waterWavesYPosition
                        )
                        lineTo(
                            x = size.width,
                            y = size.height
                        )
                        lineTo(
                            x = 0f,
                            y = size.height
                        )
                        close()
                    }
                    drawPath(
                        path = waterPath,
                        color = waterColor
                    )
                }
                drawRoundRect(
                    color = capColor,
                    size = Size(capWidth, capHeight),
                    topLeft = Offset(size.width / 2 - capWidth / 2f, 0f),
                    cornerRadius = CornerRadius(45f, 45f)
                )
            }

            val text = buildAnnotatedString {
                withStyle(
                    style = SpanStyle(
                        color = if (waterPercentage > 0.5f) bottleColor else waterColor,
                        fontSize = 44.sp
                    )
                ){
                    append(usedWaterAmountAnimation.toString())
                }
                withStyle(
                    style = SpanStyle(
                        color = if (waterPercentage > 0.5f) bottleColor else waterColor,
                        fontSize = 22.sp
                    )
                ){
                    append(" ")
                    append(unit)
                }
            }

            Box(modifier = Modifier.fillMaxSize(), contentAlignment = Alignment.Center){
                Text(text = text)
            }
        }
}

Link Github: KobamYo/Simple_Animation_PPB-B (github.com)