kopia lustrzana https://github.com/rt-bishop/Look4Sat
Implemented RadarView to show the selected pass trajectory and the current sat position if overhead
Arty Bishop
rodzic
6f4ab63b4a
commit
e88b78d4c6
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@ -1,5 +1,7 @@
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package com.rtbishop.lookingsat.ui
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import android.content.Context
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import android.graphics.*
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import android.os.Bundle
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import android.view.LayoutInflater
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import android.view.View
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@ -7,14 +9,23 @@ import android.view.ViewGroup
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import android.widget.FrameLayout
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import androidx.fragment.app.Fragment
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import androidx.recyclerview.widget.RecyclerView
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import com.github.amsacode.predict4java.SatPos
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import com.rtbishop.lookingsat.R
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import com.rtbishop.lookingsat.repo.SatPass
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import java.util.*
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import java.util.concurrent.Executors
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import java.util.concurrent.TimeUnit
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import kotlin.math.cos
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import kotlin.math.sin
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class RadarFragment : Fragment() {
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private lateinit var satPass: SatPass
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private lateinit var radarView: RadarView
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private lateinit var radarSkyFrame: FrameLayout
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private lateinit var radarRecycler: RecyclerView
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private val service = Executors.newSingleThreadScheduledExecutor()
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private val delay = 5000L
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override fun onCreateView(
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inflater: LayoutInflater,
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@ -29,5 +40,113 @@ class RadarFragment : Fragment() {
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satPass = arguments?.get("satPass") as SatPass
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radarSkyFrame = view.findViewById(R.id.radar_sky_frame)
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radarRecycler = view.findViewById(R.id.radar_recycler)
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radarView = RadarView(activity as MainActivity)
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radarSkyFrame.addView(radarView)
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service.scheduleAtFixedRate({ radarView.invalidate() }, delay, delay, TimeUnit.MILLISECONDS)
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}
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inner class RadarView(context: Context) : View(context) {
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private val radarSize = resources.displayMetrics.widthPixels
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private val scale = resources.displayMetrics.density
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private val startTime = satPass.pass.startTime
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private val endTime = satPass.pass.endTime
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private val radius = radarSize * 0.45f
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private val piDiv2 = Math.PI / 2.0
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private val txtSize = scale * 15
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private val center = 0f
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private val bmp: Bitmap = Bitmap.createBitmap(radarSize, radarSize, Bitmap.Config.ARGB_8888)
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private val mtrx: Matrix = Matrix().apply {
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postTranslate(radarSize / 2f, radarSize / 2f)
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}
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private val cvs: Canvas = Canvas().apply {
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setBitmap(bmp)
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setMatrix(mtrx)
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}
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private val linePaint = Paint().apply {
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isAntiAlias = true
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color = Color.parseColor("#C0C0C0")
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style = Paint.Style.STROKE
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strokeWidth = scale
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}
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private val txtPaint = Paint().apply {
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isAntiAlias = true
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color = Color.parseColor("#FFE082")
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textSize = txtSize
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}
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private val passPaint = Paint().apply {
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isAntiAlias = true
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color = Color.RED
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style = Paint.Style.STROKE
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strokeWidth = scale
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}
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private val satPaint = Paint().apply {
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isAntiAlias = true
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color = Color.parseColor("#FFE082")
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style = Paint.Style.FILL
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}
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private val path: Path = Path()
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override fun onDraw(canvas: Canvas) {
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var satPos: SatPos
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var satPassX: Float
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var satPassY: Float
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bmp.eraseColor(Color.TRANSPARENT)
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cvs.drawLine(center - radius, center, center + radius, center, linePaint)
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cvs.drawLine(center, center - radius, center, center + radius, linePaint)
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cvs.drawCircle(center, center, radius, linePaint)
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cvs.drawCircle(center, center, (radius / 3) * 2, linePaint)
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cvs.drawCircle(center, center, radius / 3, linePaint)
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cvs.drawText("N", center - txtSize / 3, center - radius - scale * 2, txtPaint)
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cvs.drawText("E", center + radius + scale * 2, center + txtSize / 3, txtPaint)
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cvs.drawText("S", center - txtSize / 3, center + radius + txtSize, txtPaint)
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cvs.drawText("W", center - radius - txtSize, center + txtSize / 3, txtPaint)
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cvs.drawText("0°", center + scale, center - scale * 2, txtPaint)
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cvs.drawText("30°", center + scale, center - (radius / 3) - scale * 2, txtPaint)
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cvs.drawText("60°", center + scale, center - ((radius / 3) * 2) - scale * 2, txtPaint)
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while (startTime.before(endTime)) {
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satPos = satPass.predictor.getSatPos(startTime)
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satPassX = center + sph2CartX(satPos.azimuth, satPos.elevation, radius.toDouble())
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satPassY = center - sph2CartY(satPos.azimuth, satPos.elevation, radius.toDouble())
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if (startTime.compareTo(satPass.pass.startTime) == 0) {
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path.moveTo(satPassX, satPassY)
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} else {
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path.lineTo(satPassX, satPassY)
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}
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startTime.time += delay
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}
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cvs.drawPath(path, passPaint)
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satPos = satPass.predictor.getSatPos(getCurrentDate())
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if (satPos.elevation > 0) {
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cvs.drawCircle(
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center + sph2CartX(satPos.azimuth, satPos.elevation, radius.toDouble()),
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center - sph2CartY(satPos.azimuth, satPos.elevation, radius.toDouble()),
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txtSize / 3, satPaint
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)
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}
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canvas.drawBitmap(bmp, left.toFloat(), top.toFloat(), null)
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}
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private fun sph2CartX(azimuth: Double, elevation: Double, r: Double): Float {
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val radius = r * (piDiv2 - elevation) / piDiv2
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return (radius * cos(piDiv2 - azimuth)).toFloat()
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}
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private fun sph2CartY(azimuth: Double, elevation: Double, r: Double): Float {
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val radius = r * (piDiv2 - elevation) / piDiv2
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return (radius * sin(piDiv2 - azimuth)).toFloat()
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}
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private fun getCurrentDate(): Date {
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return Date()
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}
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}
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}
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