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package com.mapbox.mapboxsdk.testapp.activity.turf
import android.graphics.Color
import android.os.Bundle
import androidx.appcompat.app.AppCompatActivity
import android.widget.SeekBar
import com.mapbox.geojson.Point
import com.mapbox.mapboxsdk.camera.CameraPosition
import com.mapbox.mapboxsdk.geometry.LatLng
import com.mapbox.mapboxsdk.maps.Style
import com.mapbox.mapboxsdk.style.expressions.Expression.*
import com.mapbox.mapboxsdk.style.layers.FillLayer
import com.mapbox.mapboxsdk.style.layers.PropertyFactory.fillColor
import com.mapbox.mapboxsdk.style.sources.GeoJsonSource
import com.mapbox.mapboxsdk.testapp.R
import com.mapbox.turf.TurfTransformation
import kotlinx.android.synthetic.main.activity_physical_circle.*
/**
* An Activity that showcases how to create a Circle with radius expressed in physical units using a FillLayer.
*/
class PhysicalUnitCircleActivity : AppCompatActivity(), SeekBar.OnSeekBarChangeListener {
companion object {
const val LAYER_ID = "circle-id"
const val SOURCE_ID = "circle-id"
const val LATITUDE = 22.928207
const val LONGITUDE = 15.0155543
const val ZOOM = 10.0
}
private lateinit var source: GeoJsonSource
private var steps: Int = 10
private var radius: Double = 9000.0
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_physical_circle)
mapView.onCreate(savedInstanceState)
mapView.getMapAsync { mapboxMap ->
mapboxMap.cameraPosition = CameraPosition.Builder()
.target(LatLng(LATITUDE, LONGITUDE))
.zoom(ZOOM)
.build()
source = GeoJsonSource(SOURCE_ID, TurfTransformation.circle(
Point.fromLngLat(LONGITUDE, LATITUDE), 9000.0, 10, "meters")
)
stepsBar.setOnSeekBarChangeListener(this)
radiusBar.setOnSeekBarChangeListener(this)
mapboxMap.setStyle(Style.Builder()
.fromUri(Style.SATELLITE_STREETS)
.withLayer(FillLayer(LAYER_ID, SOURCE_ID).withProperties(fillColor(interpolate(
exponential(0.5f), zoom(),
stop(8, color(Color.RED)),
stop(12, color(Color.BLUE)),
stop(16, color(Color.GREEN))
))))
.withSource(source)
)
}
}
override fun onProgressChanged(seekBar: SeekBar?, progress: Int, fromUser: Boolean) {
seekBar?.let {
if (it.id == stepsBar.id) {
steps = progress
} else {
radius = progress.toDouble()
}
source.setGeoJson(TurfTransformation.circle(
Point.fromLngLat(LONGITUDE, LATITUDE), radius, steps, "meters")
)
}
}
override fun onStartTrackingTouch(seekBar: SeekBar?) {
// no-op
}
override fun onStopTrackingTouch(seekBar: SeekBar?) {
// no-op
}
override fun onStart() {
super.onStart()
mapView.onStart()
}
override fun onResume() {
super.onResume()
mapView.onResume()
}
override fun onPause() {
super.onPause()
mapView.onPause()
}
override fun onStop() {
super.onStop()
mapView.onStop()
}
override fun onLowMemory() {
super.onLowMemory()
mapView.onLowMemory()
}
override fun onDestroy() {
super.onDestroy()
mapView.onDestroy()
}
override fun onSaveInstanceState(outState: Bundle?) {
super.onSaveInstanceState(outState)
outState?.let {
mapView.onSaveInstanceState(it)
}
}
}
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