Added navigation parameters to RadarScreen

app/src/main/java/com/rtbishop/look4sat/presentation/MainActivity.kt

@@ -39,6 +39,7 @@ import androidx.navigation.compose.NavHost
 import androidx.navigation.compose.composable
 import androidx.navigation.compose.currentBackStackEntryAsState
 import androidx.navigation.compose.rememberNavController
+import androidx.navigation.navArgument
 import com.rtbishop.look4sat.R
 import com.rtbishop.look4sat.presentation.entriesScreen.EntriesScreen
 import com.rtbishop.look4sat.presentation.mapScreen.MapScreen
@@ -89,7 +90,7 @@ private fun MainNavBar(navController: NavController) {
         val navBackStackEntry = navController.currentBackStackEntryAsState()
         val currentRoute = navBackStackEntry.value?.destination?.route
         items.forEach { item ->
-            NavigationBarItem(selected = currentRoute == item.route, onClick = {
+            NavigationBarItem(selected = currentRoute?.contains(item.route) ?: false, onClick = {
                 navController.navigate(item.route) {
                     navController.graph.startDestinationRoute?.let { route ->
                         popUpTo(route) { saveState = false }
@@ -104,10 +105,13 @@ private fun MainNavBar(navController: NavController) {
 
 @Composable
 private fun MainNavGraph(navController: NavHostController) {
+    val radarRoute = "${Screen.Radar.route}?catNum={catNum}&aosTime={aosTime}"
+    val radarArgs = listOf(navArgument("catNum") { defaultValue = 0 },
+        navArgument("aosTime") { defaultValue = 0L })
     NavHost(navController, startDestination = Screen.Passes.route) {
         composable(Screen.Entries.route) { EntriesScreen(navController) }
         composable(Screen.Passes.route) { PassesScreen(navController) }
-        composable(Screen.Radar.route) { RadarScreen() }
+        composable(radarRoute, radarArgs) { RadarScreen(navController) }
         composable(Screen.Map.route) { MapScreen() }
         composable(Screen.Settings.route) { SettingsScreen(navController) }
     }

app/src/main/java/com/rtbishop/look4sat/presentation/passesScreen/PassesScreen.kt

@@ -41,7 +41,9 @@ private val sdf = SimpleDateFormat("HH:mm:ss", Locale.ENGLISH)
 @Composable
 fun PassesScreen(navController: NavController) {
     val viewModel: PassesViewModel = hiltViewModel()
-    val navToRadar = { navController.navigate(Screen.Radar.route) }
+    val navToRadar = { catNum: Int, aosTime: Long ->
+        navController.navigate("${Screen.Radar.route}?catNum=${catNum}&aosTime=${aosTime}")
+    }
     val state = viewModel.passes.collectAsState(initial = null)
     val timerText = viewModel.timerText.collectAsState(initial = null)
     val isRefreshing = state.value is DataState.Loading
@@ -105,15 +107,15 @@ private fun PassPreview() {
     )
     val satellite = NearEarthSat(data)
     val pass = SatPass(1L, 25.0, 10L, 75.0, 850, 45.0, satellite, 0.5f)
-    MainTheme { Pass(pass = pass, {}) }
+    MainTheme { Pass(pass = pass, { _,_ -> }) }
 }
 
 @Composable
-private fun Pass(pass: SatPass, navToRadar: () -> Unit, modifier: Modifier = Modifier) {
+private fun Pass(pass: SatPass, navToRadar: (Int, Long) -> Unit, modifier: Modifier = Modifier) {
     Surface(color = MaterialTheme.colorScheme.background, modifier = modifier) {
         Surface(modifier = Modifier
             .padding(bottom = 2.dp)
-            .clickable { navToRadar() }) {
+            .clickable { navToRadar(pass.catNum, pass.aosTime) }) {
             Column(
                 verticalArrangement = Arrangement.spacedBy(2.dp),
                 modifier = Modifier
@@ -202,7 +204,7 @@ private fun PassesCard(
     refreshState: PullRefreshState,
     isRefreshing: Boolean,
     passes: List<SatPass>,
-    navToRadar: () -> Unit
+    navToRadar: (Int, Long) -> Unit
 ) {
     ElevatedCard(modifier = Modifier.fillMaxSize()) {
         Box(Modifier.pullRefresh(refreshState)) {

app/src/main/java/com/rtbishop/look4sat/presentation/radarScreen/RadarScreen.kt

@@ -1,20 +1,35 @@
 package com.rtbishop.look4sat.presentation.radarScreen
 
+import androidx.compose.foundation.background
 import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.items
 import androidx.compose.material3.*
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.collectAsState
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.res.painterResource
+import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
+import androidx.compose.ui.viewinterop.AndroidView
 import androidx.hilt.navigation.compose.hiltViewModel
+import androidx.navigation.NavController
 import com.rtbishop.look4sat.R
+import com.rtbishop.look4sat.domain.model.SatRadio
+import timber.log.Timber
 
 @Composable
-fun RadarScreen(viewModel: RadarViewModel = hiltViewModel()) {
+fun RadarScreen(navController: NavController) {
+    val viewModel: RadarViewModel = hiltViewModel()
+    val currentPass = viewModel.getPass().collectAsState(null)
+    val radarData = viewModel.radarData.collectAsState()
+    val transmitters = viewModel.transmitters.collectAsState()
+    val orientation = viewModel.orientation.collectAsState()
 
     Column(modifier = Modifier.padding(6.dp), verticalArrangement = Arrangement.spacedBy(6.dp)) {
         ElevatedCard(modifier = Modifier.height(52.dp)) {
@@ -47,11 +62,106 @@ fun RadarScreen(viewModel: RadarViewModel = hiltViewModel()) {
                 )
             }
         }
-        ElevatedCard(modifier = Modifier.fillMaxSize().weight(1f)) {
-
+        ElevatedCard(modifier = Modifier
+            .fillMaxSize()
+            .weight(1f)) {
+//            val context = LocalContext.current
+//            AndroidView({ RadarView(context) }, modifier = Modifier.fillMaxSize()) { radarView ->
+//                Timber.d("Radar view recomposition")
+//                radarView.setShowAim(true)
+//                radarView.setScanning(true)
+//                radarData.value?.let {
+//                    radarView.setPosition(it.satPos)
+//                    radarView.setPositions(it.satTrack)
+//                }
+//                orientation.value?.let {
+//                    radarView.setOrientation(it.first, it.second, it.first)
+//                }
+//            }
+            radarData.value?.let { data ->
+                orientation.value?.let { triple ->
+                    RadarViewCompose(
+                        item = data.satPos,
+                        items = data.satTrack,
+                        orientation = triple
+                    )
+                }
+            }
         }
-        ElevatedCard(modifier = Modifier.fillMaxSize().weight(1f)) {
+        ElevatedCard(modifier = Modifier
+            .fillMaxSize()
+            .weight(1f)) {
+            TransmittersList(transmitters = transmitters.value)
+        }
+    }
+}
 
+@Composable
+private fun TransmittersList(transmitters: List<SatRadio>) {
+    LazyColumn(modifier = Modifier.fillMaxSize()) {
+        items(items = transmitters, key = { item -> item.uuid }) { radio ->
+            TransmitterItem(radio)
+        }
+    }
+}
+
+@Composable
+private fun TransmitterItem(radio: SatRadio) {
+    Surface(color = MaterialTheme.colorScheme.background) {
+        Surface(modifier = Modifier.padding(bottom = 2.dp)) {
+            Column(
+                verticalArrangement = Arrangement.spacedBy(2.dp),
+                modifier = Modifier
+                    .background(MaterialTheme.colorScheme.surface)
+                    .padding(6.dp)
+            ) {
+                Row(verticalAlignment = Alignment.CenterVertically, modifier = Modifier.fillMaxWidth()) {
+                    Icon(
+                        painter = painterResource(id = R.drawable.ic_prev),
+                        contentDescription = null
+                    )
+                    Text(
+                        text = radio.info,
+                        modifier = Modifier.weight(1f),
+                        textAlign = TextAlign.Center
+                    )
+                    Icon(
+                        painter = painterResource(id = R.drawable.ic_next),
+                        contentDescription = null
+                    )
+                }
+                Row(
+                    verticalAlignment = Alignment.CenterVertically,
+                    modifier = Modifier.fillMaxWidth()
+                ) {
+                    Text(
+                        text = stringResource(id = R.string.radio_downlink, radio.downlink ?: 0L),
+                        textAlign = TextAlign.Center,
+                        fontSize = 15.sp,
+                        modifier = Modifier.weight(0.5f)
+                    )
+                    Text(
+                        text = stringResource(id = R.string.radio_uplink, radio.uplink ?: 0L),
+                        textAlign = TextAlign.Center,
+                        fontSize = 15.sp,
+                        modifier = Modifier.weight(0.5f)
+                    )
+                }
+                Row(
+                    verticalAlignment = Alignment.CenterVertically,
+                    horizontalArrangement = Arrangement.SpaceBetween,
+                    modifier = Modifier.fillMaxWidth()
+                ) {
+                    Text(
+                        text = radio.mode ?: "",
+                        fontSize = 15.sp
+                    )
+                    Text(
+                        text = radio.isInverted.toString(),
+                        fontSize = 15.sp
+                    )
+                }
+            }
         }
     }
 }
@@ -73,29 +183,9 @@ fun RadarScreen(viewModel: RadarViewModel = hiltViewModel()) {
 //                radarView?.setPositions(passData.satTrack)
 //                setPassText(pass, passData.satPos)
 //            }
-//            viewModel.transmitters.observe(viewLifecycleOwner) { list ->
-//                if (list.isNotEmpty()) {
-//                    radioAdapter.submitList(list)
-//                    radarProgress.visibility = View.INVISIBLE
-//                } else {
-//                    radarProgress.visibility = View.INVISIBLE
-//                    radarEmptyLayout.visibility = View.VISIBLE
-//                }
-//                radarView?.invalidate()
-//            }
 //            viewModel.orientation.observe(viewLifecycleOwner) { value ->
 //                radarView?.setOrientation(value.first, value.second, value.third)
 //            }
-//                radarBtnBack.clickWithDebounce { findNavController().navigateUp() }
-//                radarBtnMap.clickWithDebounce {
-//                    val direction = RadarFragmentDirections.globalToMap(pass.catNum)
-//                    findNavController().navigate(direction)
-//                }
-//                radarBtnNotify.isEnabled = false
-//                radarBtnSettings.clickWithDebounce {
-//                    val direction = RadarFragmentDirections.globalToSettings()
-//                    findNavController().navigate(direction)
-//                }
 //        }
 //    }
 //}

app/src/main/java/com/rtbishop/look4sat/presentation/radarScreen/RadarViewCompose.kt

@@ -0,0 +1,155 @@
+@file:OptIn(ExperimentalTextApi::class)
+
+package com.rtbishop.look4sat.presentation.radarScreen
+
+import androidx.compose.foundation.Canvas
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.*
+import androidx.compose.ui.graphics.drawscope.*
+import androidx.compose.ui.text.*
+import androidx.compose.ui.unit.sp
+import com.rtbishop.look4sat.domain.predict.PI_2
+import com.rtbishop.look4sat.domain.predict.SatPos
+import com.rtbishop.look4sat.domain.predict.TWO_PI
+import com.rtbishop.look4sat.utility.toRadians
+import kotlin.math.cos
+import kotlin.math.sin
+
+@Composable
+fun RadarViewCompose(item: SatPos, items: List<SatPos>, orientation: Triple<Float, Float, Float>) {
+    val measurer = rememberTextMeasurer()
+    val newTrackPath = remember { mutableStateOf(Path()) }
+    val newArrowPath = remember { mutableStateOf(Path()) }
+    var isTrackCreated = false
+    val yellowColor = Color(0xFFFFE082)
+    val whiteColor = Color(0xCCFFFFFF)
+    val redColor = Color(0xFFB71C1C)
+    val strokeWidth = 4f
+    Canvas(modifier = Modifier.fillMaxSize()) {
+        val radius = (size.minDimension / 2f) * 0.95f
+        if (items.isNotEmpty() && !isTrackCreated) {
+            newTrackPath.value = createPassTrajectory(items, radius)
+            newArrowPath.value = createPassTrajectoryArrow()
+            isTrackCreated = true
+        }
+        rotate(-orientation.first) {
+            drawRadarCirle(radius, whiteColor, strokeWidth)
+            drawRadarCross(radius, whiteColor, strokeWidth)
+            drawRadarText(radius, yellowColor, measurer)
+            translate(center.x, center.y) {
+                if (items.isNotEmpty()) {
+                    val effect = createPathEffect(newTrackPath.value, newArrowPath.value)
+                    drawPath(newTrackPath.value, redColor, style = Stroke(4f))
+                    drawPath(newTrackPath.value, yellowColor, style = Stroke(pathEffect = effect))
+                }
+                drawSatellite(item, radius, yellowColor)
+                drawCrosshair(orientation.first, orientation.second, radius, strokeWidth)
+            }
+        }
+    }
+}
+
+private fun DrawScope.drawRadarCirle(radius: Float, color: Color, width: Float, circles: Int = 3) {
+    for (i in 0 until circles) {
+        val circleRadius = radius - radius / circles.toFloat() * i.toFloat()
+        drawCircle(color, circleRadius, style = Stroke(width))
+    }
+}
+
+private fun DrawScope.drawRadarCross(radius: Float, color: Color, width: Float) {
+    drawLine(color, center, center.copy(x = center.x - radius), strokeWidth = width)
+    drawLine(color, center, center.copy(x = center.x + radius), strokeWidth = width)
+    drawLine(color, center, center.copy(y = center.y - radius), strokeWidth = width)
+    drawLine(color, center, center.copy(y = center.y + radius), strokeWidth = width)
+}
+
+private fun DrawScope.drawRadarText(
+    radius: Float, color: Color, measurer: TextMeasurer, circles: Int = 3
+) {
+    for (i in 0..circles) {
+        val textY = (radius - radius / circles * i) + 25f
+        val textDeg = " ${(90 / circles) * (circles - i)}°"
+        drawText(measurer, textDeg, center.copy(y = textY), style = TextStyle(color, 16.sp))
+    }
+}
+
+private fun DrawScope.drawSatellite(item: SatPos, radius: Float, color: Color) {
+    if (item.elevation > 0) {
+        val satX = sph2CartX(item.azimuth, item.elevation, radius.toDouble())
+        val satY = sph2CartY(item.azimuth, item.elevation, radius.toDouble())
+        drawCircle(color, 16f, center.copy(satX, -satY))
+    }
+}
+
+private fun DrawScope.drawCrosshair(azimuth: Float, elevation: Float, radius: Float, width: Float) {
+    val redColor = Color(0xFFFF0000)
+    val size = 36f
+    val azimuthRad = azimuth.toDouble().toRadians()
+    val tmpElevation = elevation.toDouble().toRadians()
+    val elevationRad = if (tmpElevation > 0.0) 0.0 else tmpElevation
+    val crossX = sph2CartX(azimuthRad, -elevationRad, radius.toDouble())
+    val crossY = sph2CartY(azimuthRad, -elevationRad, radius.toDouble())
+    drawLine(
+        redColor,
+        center.copy(crossX - size, -crossY),
+        center.copy(crossX + size, -crossY),
+        strokeWidth = width
+    )
+    drawLine(
+        redColor,
+        center.copy(crossX, -crossY - size),
+        center.copy(crossX, -crossY + size),
+        strokeWidth = width
+    )
+    drawCircle(redColor, size / 2, center.copy(crossX, -crossY), style = Stroke(width))
+}
+
+private fun createPassTrajectory(positions: List<SatPos>, radarRadius: Float): Path {
+    val trackPath = Path()
+    positions.forEachIndexed { index, satPos ->
+        val passX = sph2CartX(satPos.azimuth, satPos.elevation, radarRadius.toDouble())
+        val passY = sph2CartY(satPos.azimuth, satPos.elevation, radarRadius.toDouble())
+        if (index == 0) {
+            trackPath.moveTo(passX, -passY)
+        } else {
+            trackPath.lineTo(passX, -passY)
+        }
+    }
+    return trackPath
+}
+
+private fun createPassTrajectoryArrow(): Path {
+    val arrowPath = Path()
+    val radius = 24f
+    val sides = 3
+    val angle = TWO_PI / sides
+    arrowPath.moveTo((radius * cos(angle)).toFloat(), (radius * sin(angle)).toFloat())
+    for (i in 1 until sides) {
+        val x = (radius * cos(angle - angle * i)).toFloat()
+        val y = (radius * sin(angle - angle * i)).toFloat()
+        arrowPath.lineTo(x, y)
+    }
+    arrowPath.close()
+    return arrowPath
+}
+
+private fun createPathEffect(trackPath: Path, arrowPath: Path): PathEffect {
+    val trackLength = PathMeasure().apply { setPath(trackPath, false) }.length
+    val quarter = trackLength / 4f
+    val center = trackLength / 2f
+    return PathEffect.stampedPathEffect(arrowPath, center, quarter, StampedPathEffectStyle.Rotate)
+}
+
+private fun sph2CartX(azimuth: Double, elevation: Double, r: Double): Float {
+    val radius = r * (PI_2 - elevation) / PI_2
+    return (radius * cos(PI_2 - azimuth)).toFloat()
+}
+
+private fun sph2CartY(azimuth: Double, elevation: Double, r: Double): Float {
+    val radius = r * (PI_2 - elevation) / PI_2
+    return (radius * sin(PI_2 - azimuth)).toFloat()
+}

app/src/main/java/com/rtbishop/look4sat/presentation/radarScreen/RadarViewModel.kt

@@ -19,8 +19,7 @@ package com.rtbishop.look4sat.presentation.radarScreen
 
 import android.hardware.GeomagneticField
 import android.util.Log
-import androidx.lifecycle.LiveData
-import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.SavedStateHandle
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.viewModelScope
 import com.rtbishop.look4sat.domain.IDataRepository
@@ -37,6 +36,8 @@ import com.rtbishop.look4sat.utility.round
 import com.rtbishop.look4sat.utility.toDegrees
 import dagger.hilt.android.lifecycle.HiltViewModel
 import kotlinx.coroutines.delay
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.flow.flow
 import kotlinx.coroutines.isActive
 import kotlinx.coroutines.launch
@@ -44,6 +45,7 @@ import javax.inject.Inject
 
 @HiltViewModel
 class RadarViewModel @Inject constructor(
+    private val savedStateHandle: SavedStateHandle,
     private val orientationManager: OrientationManager,
     private val reporter: DataReporter,
     private val btReporter: BTReporter,
@@ -53,17 +55,29 @@ class RadarViewModel @Inject constructor(
 ) : ViewModel(), OrientationManager.OrientationListener {
 
     private val stationPos = settings.loadStationPosition()
-    private val _passData = MutableLiveData<RadarData>()
-    private val _transmitters = MutableLiveData<List<SatRadio>>()
-    private val _orientation = MutableLiveData<Triple<Float, Float, Float>>()
-    val radarData: LiveData<RadarData> = _passData
-    val transmitters: LiveData<List<SatRadio>> = _transmitters
-    val orientation: LiveData<Triple<Float, Float, Float>> = _orientation
+    private val _passData = MutableStateFlow<RadarData?>(null)
+    private val _transmitters = MutableStateFlow<List<SatRadio>>(emptyList())
+    private val _orientation = MutableStateFlow<Triple<Float, Float, Float>?>(null)
+    val radarData: StateFlow<RadarData?> = _passData
+    val transmitters: StateFlow<List<SatRadio>> = _transmitters
+    val orientation: StateFlow<Triple<Float, Float, Float>?> = _orientation
 
-    fun getPass(catNum: Int, aosTime: Long) = flow {
+    init {
+        enableSensor()
+    }
+
+    override fun onCleared() {
+        disableSensor()
+        super.onCleared()
+    }
+
+    fun getPass() = flow {
+        val catNum = savedStateHandle.get<Int>("catNum") ?: 0
+        val aosTime = savedStateHandle.get<Long>("aosTime") ?: 0L
         satManager.calculatedPasses.collect { passes ->
             val pass = passes.find { pass -> pass.catNum == catNum && pass.aosTime == aosTime }
-            pass?.let { satPass ->
+            val currentPass = pass ?: passes.firstOrNull()
+            currentPass?.let { satPass ->
                 emit(satPass)
                 val transmitters = repository.getRadiosWithId(satPass.catNum)
                 viewModelScope.launch {
@@ -115,7 +129,7 @@ class RadarViewModel @Inject constructor(
                 val elevation = satPos.elevation.toDegrees().round(1)
                 reporter.reportRotation(server, port, azimuth, elevation)
             }
-            _passData.postValue(RadarData(satPos, track))
+            _passData.value = RadarData(satPos, track)
         }
     }
 
@@ -140,7 +154,7 @@ class RadarViewModel @Inject constructor(
         viewModelScope.launch {
             delay(125)
             val list = satManager.processRadios(satellite, stationPos, radios, time)
-            _transmitters.postValue(list)
+            _transmitters.value = list
         }
     }
 }