chore: initial commit

Signed-off-by: Alan Brault <alan.brault@visus.io>

app/.gitignore

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+/build

app/build.gradle.kts

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+plugins {
+    alias(libs.plugins.android.application)
+    alias(libs.plugins.kotlin.android)
+    alias(libs.plugins.kotlin.compose)
+}
+
+android {
+    namespace = "io.visus.solanim"
+    compileSdk {
+        version = release(36)
+    }
+
+    defaultConfig {
+        applicationId = "io.visus.solanim"
+        minSdk = 35
+        targetSdk = 36
+        versionCode = 1
+        versionName = "1.0"
+
+        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            isMinifyEnabled = false
+            proguardFiles(
+                getDefaultProguardFile("proguard-android-optimize.txt"),
+                "proguard-rules.pro"
+            )
+        }
+    }
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_17
+        targetCompatibility = JavaVersion.VERSION_17
+    }
+    kotlinOptions {
+        jvmTarget = "17"
+    }
+    buildFeatures {
+        compose = true
+    }
+}
+
+dependencies {
+    implementation(libs.androidx.core.ktx)
+    implementation(libs.androidx.lifecycle.runtime.ktx)
+    implementation(libs.androidx.activity.compose)
+    implementation(libs.androidx.lifecycle.viewmodel.compose)
+    implementation(libs.koin.androidx.compose)
+    implementation(libs.koin.androidx.compose.navigation)
+    implementation(project(":lib:solanim-ui"))
+    implementation(project(":lib:vulkan"))
+    testImplementation(libs.junit)
+    androidTestImplementation(libs.androidx.junit)
+    androidTestImplementation(libs.androidx.espresso.core)
+    androidTestImplementation(platform(libs.androidx.compose.bom))
+    androidTestImplementation(libs.androidx.compose.ui.test.junit4)
+    debugImplementation(libs.androidx.compose.ui.tooling)
+    debugImplementation(libs.androidx.compose.ui.test.manifest)
+}

app/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

app/src/androidTest/java/io/visus/solanim/ExampleInstrumentedTest.kt

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+package io.visus.solanim
+
+import androidx.test.platform.app.InstrumentationRegistry
+import androidx.test.ext.junit.runners.AndroidJUnit4
+
+import org.junit.Test
+import org.junit.runner.RunWith
+
+import org.junit.Assert.*
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+@RunWith(AndroidJUnit4::class)
+class ExampleInstrumentedTest {
+    @Test
+    fun useAppContext() {
+        // Context of the app under test.
+        val appContext = InstrumentationRegistry.getInstrumentation().targetContext
+        assertEquals("io.visus.solanim", appContext.packageName)
+    }
+}

app/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <application
+        android:name=".MainApplication"
+        android:allowBackup="true"
+        android:dataExtractionRules="@xml/data_extraction_rules"
+        android:fullBackupContent="@xml/backup_rules"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.SolAnim">
+        <activity
+            android:name=".presentation.ui.MainActivity"
+            android:exported="true"
+            android:theme="@style/Theme.SolAnim">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

app/src/main/java/io/visus/solanim/MainApplication.kt

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+package io.visus.solanim
+
+import android.app.Application
+import io.visus.solanim.di.appModule
+import org.koin.android.ext.koin.androidContext
+import org.koin.android.ext.koin.androidLogger
+import org.koin.core.context.startKoin
+import org.koin.core.logger.Level
+
+class MainApplication : Application() {
+    override fun onCreate() {
+        super.onCreate()
+
+        startKoin {
+            androidContext(this@MainApplication)
+            androidLogger(Level.DEBUG)
+            modules(appModule)
+        }
+    }
+}

app/src/main/java/io/visus/solanim/di/AppModule.kt

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+package io.visus.solanim.di
+
+import io.visus.solanim.presentation.viewmodel.MainViewModel
+import io.visus.solanim.domain.repository.solar.SolarAnimationSettingsRepository
+import io.visus.solanim.domain.repository.solar.SolarAnimationSettingsRepositoryImpl
+import io.visus.solanim.domain.usecase.solar.GetSettingsUseCase
+import io.visus.solanim.domain.usecase.solar.UpdateColorUseCase
+import io.visus.solanim.domain.usecase.solar.UpdateRotationSpeedUseCase
+import org.koin.core.module.dsl.bind
+import org.koin.core.module.dsl.singleOf
+import org.koin.core.module.dsl.viewModelOf
+import org.koin.dsl.module
+
+val appModule = module {
+    singleOf(::SolarAnimationSettingsRepositoryImpl) { bind<SolarAnimationSettingsRepository>() }
+    singleOf(::GetSettingsUseCase)
+    singleOf(::UpdateColorUseCase)
+    singleOf(::UpdateRotationSpeedUseCase)
+
+    viewModelOf(::MainViewModel)
+}

app/src/main/java/io/visus/solanim/domain/model/solar/SolarAnimationDefaults.kt

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+package io.visus.solanim.domain.model.solar
+
+/**
+ * Default values for solar animation settings.
+ */
+object SolarAnimationDefaults {
+    const val DEFAULT_COLOR: Int = 0xFFFC9601.toInt()
+    const val DEFAULT_ROTATION_SPEED: Float = 1.0f
+}

app/src/main/java/io/visus/solanim/domain/model/solar/SolarAnimationSettings.kt

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+package io.visus.solanim.domain.model.solar
+
+/**
+ * Data class representing the settings for solar animation.
+ *
+ * @property color The color of the solar animation.
+ * @property rotationSpeed The rotation speed of the solar animation.
+ */
+data class SolarAnimationSettings(
+    val color: Int,
+    val rotationSpeed: Float
+)

app/src/main/java/io/visus/solanim/domain/repository/solar/SolarAnimationSettingsRepository.kt

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+package io.visus.solanim.domain.repository.solar
+
+import io.visus.solanim.domain.model.solar.SolarAnimationSettings
+import kotlinx.coroutines.flow.Flow
+
+/**
+ * Repository interface for managing solar animation settings.
+ */
+interface SolarAnimationSettingsRepository {
+    /**
+     * Retrieves the current solar animation settings as a flow.
+     *
+     * @return A flow emitting the current [SolarAnimationSettings].
+     */
+    fun getSettings(): Flow<SolarAnimationSettings>
+
+    /**
+     * Updates the color of the solar animation.
+     *
+     * @param color The new color value.
+     */
+    suspend fun updateColor(color: Int)
+
+    /**
+     * Updates the rotation speed of the solar animation.
+     *
+     * @param speed The new rotation speed value.
+     */
+    suspend fun updateRotationSpeed(speed: Float)
+}

app/src/main/java/io/visus/solanim/domain/repository/solar/SolarAnimationSettingsRepositoryImpl.kt

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+package io.visus.solanim.domain.repository.solar
+
+import io.visus.solanim.domain.model.solar.SolarAnimationDefaults
+import io.visus.solanim.domain.model.solar.SolarAnimationSettings
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.flow.update
+
+/**
+ * Implementation of [SolarAnimationSettingsRepository] using in-memory storage.
+ */
+class SolarAnimationSettingsRepositoryImpl : SolarAnimationSettingsRepository {
+    private val _settings: MutableStateFlow<SolarAnimationSettings> = MutableStateFlow(
+        SolarAnimationSettings(
+            color = SolarAnimationDefaults.DEFAULT_COLOR,
+            rotationSpeed = SolarAnimationDefaults.DEFAULT_ROTATION_SPEED
+        )
+    )
+
+    /**
+     * Retrieves the current solar animation settings as a flow.
+     *
+     * @return A flow emitting the current [SolarAnimationSettings].
+     */
+    override fun getSettings(): Flow<SolarAnimationSettings> = _settings.asStateFlow()
+
+    /**
+     * Updates the color of the solar animation.
+     *
+     * @param color The new color value.
+     */
+    override suspend fun updateColor(color: Int) {
+        _settings.update { it.copy(color = color) }
+    }
+
+    /**
+     * Updates the rotation speed of the solar animation.
+     *
+     * @param speed The new rotation speed value.
+     */
+    override suspend fun updateRotationSpeed(speed: Float) {
+        _settings.update { it.copy(rotationSpeed = speed) }
+    }
+}

app/src/main/java/io/visus/solanim/domain/usecase/solar/GetSettingsUseCase.kt

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+package io.visus.solanim.domain.usecase.solar
+
+import io.visus.solanim.domain.repository.solar.SolarAnimationSettingsRepository
+
+/**
+ * Use case for retrieving solar animation settings.
+ *
+ * @property repository The repository to access solar animation settings.
+ */
+class GetSettingsUseCase(private val repository: SolarAnimationSettingsRepository) {
+    operator fun invoke() = repository.getSettings()
+}

app/src/main/java/io/visus/solanim/domain/usecase/solar/UpdateColorUseCase.kt

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+package io.visus.solanim.domain.usecase.solar
+
+import io.visus.solanim.domain.repository.solar.SolarAnimationSettingsRepository
+
+/**
+ * Use case for updating the color of the solar animation.
+ *
+ * @property repository The repository to access solar animation settings.
+ */
+class UpdateColorUseCase(private val repository: SolarAnimationSettingsRepository) {
+    suspend operator fun invoke(color: Int) = repository.updateColor(color)
+}

app/src/main/java/io/visus/solanim/domain/usecase/solar/UpdateRotationSpeedUseCase.kt

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+package io.visus.solanim.domain.usecase.solar
+
+import io.visus.solanim.domain.repository.solar.SolarAnimationSettingsRepository
+
+/**
+ * Use case for updating the rotation speed of the solar animation.
+ *
+ * @property repository The repository to access solar animation settings.
+ */
+class UpdateRotationSpeedUseCase(private val repository: SolarAnimationSettingsRepository) {
+    suspend operator fun invoke(rotationSpeed: Float) = repository.updateRotationSpeed(rotationSpeed)
+}

app/src/main/java/io/visus/solanim/presentation/ui/MainActivity.kt

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+package io.visus.solanim.presentation.ui
+
+import android.os.Bundle
+import androidx.activity.ComponentActivity
+import androidx.activity.SystemBarStyle
+import androidx.activity.compose.setContent
+import androidx.activity.enableEdgeToEdge
+import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.toArgb
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.unit.dp
+import com.github.skydoves.colorpicker.compose.BrightnessSlider
+import com.github.skydoves.colorpicker.compose.ColorEnvelope
+import com.github.skydoves.colorpicker.compose.HsvColorPicker
+import com.github.skydoves.colorpicker.compose.rememberColorPickerController
+import io.visus.solanim.R
+import io.visus.solanim.presentation.viewmodel.MainUiState
+import io.visus.solanim.presentation.viewmodel.MainViewModel
+import io.visus.solanim.ui.AppTheme
+import io.visus.solanim.ui.components.Scaffold
+import io.visus.solanim.ui.components.Slider
+import io.visus.solanim.ui.components.SliderDefaults
+import io.visus.solanim.ui.components.Text
+import io.visus.solanim.ui.components.topbar.TopBar
+import io.visus.solanim.ui.components.topbar.TopBarDefaults
+import org.koin.androidx.viewmodel.ext.android.viewModel
+
+class MainActivity : ComponentActivity() {
+    private val mainViewModel: MainViewModel by viewModel()
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        enableEdgeToEdge(
+            statusBarStyle = SystemBarStyle.dark(
+                scrim = android.graphics.Color.TRANSPARENT
+            )
+        )
+
+        setContent {
+            val uiState by mainViewModel.uiState.collectAsState()
+
+            AppTheme {
+                App(
+                    uiState = uiState,
+                    onRotationSpeedValueChange = { mainViewModel.onRotationSpeedChange(it) },
+                    onColorChange = { mainViewModel.onSelectColorChange(it.color.toArgb()) }
+                )
+            }
+        }
+    }
+}
+
+@Composable
+fun App(
+    uiState: MainUiState,
+    onRotationSpeedValueChange: (Float) -> Unit,
+    onColorChange: (ColorEnvelope) -> Unit,
+) {
+    Scaffold(
+        containerColor = Color.Transparent,
+        modifier = Modifier
+            .fillMaxSize()
+            .background(AppTheme.colors.defaultBackgroundGradient),
+        topBar = {
+            TopBar(
+                colors = TopBarDefaults.topBarColors(
+                    containerColor = Color.Transparent,
+                ),
+                modifier = Modifier
+                    .fillMaxWidth()
+            ) {
+                Column(
+                    modifier = Modifier.padding(horizontal = 72.dp)
+                ) {
+                    Text(
+                        text = stringResource(
+                            R.string.rotation_speed,
+                            uiState.rotationSpeed
+                        ),
+                        color = AppTheme.colors.white,
+                    )
+                    Slider(
+                        value = uiState.rotationSpeed,
+                        onValueChange = onRotationSpeedValueChange,
+                        valueRange = 0f..2f,
+                        colors = SliderDefaults.colors(
+                            thumbColor = AppTheme.colors.tertiary,
+                            activeTrackColor = AppTheme.colors.tertiary,
+                            inactiveTrackColor = AppTheme.colors.tertiary.copy(alpha = 0.3f),
+                        ),
+                        modifier = Modifier.fillMaxWidth()
+                    )
+                }
+            }
+        },
+        bottomBar = {
+            val colorPickerController = rememberColorPickerController()
+
+            Column(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .background(Color.Transparent)
+                    .padding(vertical = 96.dp, horizontal = 32.dp)
+            ) {
+                HsvColorPicker(
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .height(150.dp),
+                    controller = colorPickerController,
+                    initialColor = Color(uiState.selectedColor),
+                    onColorChanged = onColorChange
+
+                )
+                BrightnessSlider(
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .padding(vertical = 10.dp)
+                        .height(16.dp),
+                    controller = colorPickerController,
+                    initialColor = Color(uiState.selectedColor)
+                )
+            }
+        }
+    ) { }
+}

app/src/main/java/io/visus/solanim/presentation/viewmodel/MainViewModel.kt

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+package io.visus.solanim.presentation.viewmodel
+
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import io.visus.solanim.domain.model.solar.SolarAnimationDefaults
+import io.visus.solanim.domain.usecase.solar.GetSettingsUseCase
+import io.visus.solanim.domain.usecase.solar.UpdateColorUseCase
+import io.visus.solanim.domain.usecase.solar.UpdateRotationSpeedUseCase
+import kotlinx.coroutines.flow.SharingStarted
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.map
+import kotlinx.coroutines.flow.stateIn
+import kotlinx.coroutines.launch
+
+/**
+ * ViewModel for the main screen.
+ */
+class MainViewModel(
+    getSettingsUseCase: GetSettingsUseCase,
+    private val updateColorUseCase: UpdateColorUseCase,
+    private val updateRotationSpeedUseCase: UpdateRotationSpeedUseCase
+) : ViewModel() {
+
+    val uiState: StateFlow<MainUiState> = getSettingsUseCase()
+        .map { settings ->
+            MainUiState(
+                selectedColor = settings.color,
+                rotationSpeed = settings.rotationSpeed
+            )
+        }
+        .stateIn(
+            scope = viewModelScope,
+            started = SharingStarted.WhileSubscribed(5_000),
+            initialValue = MainUiState()
+        )
+
+    /**
+     * Updates the selected color.
+     *
+     * @param value The new color selected by the user.
+     */
+    fun onSelectColorChange(value: Int) {
+        viewModelScope.launch {
+            updateColorUseCase(value)
+        }
+    }
+
+    /**
+     * Updates the rotation speed.
+     *
+     * @param value The new value from the rotation speed.
+     */
+    fun onRotationSpeedChange(value: Float) {
+        viewModelScope.launch {
+            updateRotationSpeedUseCase(value)
+        }
+    }
+}
+
+/**
+ * UI state for the main screen.
+ */
+data class MainUiState(
+    val selectedColor: Int = SolarAnimationDefaults.DEFAULT_COLOR,
+    val rotationSpeed: Float = SolarAnimationDefaults.DEFAULT_ROTATION_SPEED
+)

app/src/main/res/drawable/ic_launcher_background.xml

@@ -0,0 +1,170 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillColor="#3DDC84"
+        android:pathData="M0,0h108v108h-108z" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M9,0L9,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,0L19,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,0L29,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,0L39,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,0L49,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,0L59,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,0L69,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,0L79,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M89,0L89,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M99,0L99,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,9L108,9"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,19L108,19"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,29L108,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,39L108,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,49L108,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,59L108,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,69L108,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,79L108,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,89L108,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,99L108,99"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,29L89,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,39L89,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,49L89,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,59L89,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,69L89,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,79L89,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,19L29,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,19L39,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,19L49,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,19L59,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,19L69,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,19L79,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+</vector>

app/src/main/res/drawable/ic_launcher_foreground.xml

@@ -0,0 +1,30 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="85.84757"
+                android:endY="92.4963"
+                android:startX="42.9492"
+                android:startY="49.59793"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>

app/src/main/res/mipmap-anydpi/ic_launcher.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+    <monochrome android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>

app/src/main/res/mipmap-anydpi/ic_launcher_round.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+    <monochrome android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>

app/src/main/res/values/colors.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="purple_200">#FFBB86FC</color>
+    <color name="purple_500">#FF6200EE</color>
+    <color name="purple_700">#FF3700B3</color>
+    <color name="teal_200">#FF03DAC5</color>
+    <color name="teal_700">#FF018786</color>
+    <color name="black">#FF000000</color>
+    <color name="white">#FFFFFFFF</color>
+</resources>

app/src/main/res/values/strings.xml

@@ -0,0 +1,4 @@
+<resources>
+    <string name="app_name">Solar Animation</string>
+    <string name="rotation_speed">Rotation Speed: %1$.2f</string>
+</resources>

app/src/main/res/values/themes.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <style name="Theme.SolAnim" parent="android:Theme.Material.Light.NoActionBar" />
+</resources>

app/src/main/res/xml/backup_rules.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+   Sample backup rules file; uncomment and customize as necessary.
+   See https://developer.android.com/guide/topics/data/autobackup
+   for details.
+   Note: This file is ignored for devices older than API 31
+   See https://developer.android.com/about/versions/12/backup-restore
+-->
+<full-backup-content>
+    <!--
+   <include domain="sharedpref" path="."/>
+   <exclude domain="sharedpref" path="device.xml"/>
+-->
+</full-backup-content>

app/src/main/res/xml/data_extraction_rules.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+   Sample data extraction rules file; uncomment and customize as necessary.
+   See https://developer.android.com/about/versions/12/backup-restore#xml-changes
+   for details.
+-->
+<data-extraction-rules>
+    <cloud-backup>
+        <!-- TODO: Use <include> and <exclude> to control what is backed up.
+        <include .../>
+        <exclude .../>
+        -->
+    </cloud-backup>
+    <!--
+    <device-transfer>
+        <include .../>
+        <exclude .../>
+    </device-transfer>
+    -->
+</data-extraction-rules>

app/src/test/java/io/visus/solanim/ExampleUnitTest.kt

@@ -0,0 +1,17 @@
+package io.visus.solanim
+
+import org.junit.Test
+
+import org.junit.Assert.*
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+class ExampleUnitTest {
+    @Test
+    fun addition_isCorrect() {
+        assertEquals(4, 2 + 2)
+    }
+}