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Viewport camera

Viewport camera showcase.
ViewportShowcaseActivity.kt
package com.mapbox.maps.testapp.examples.viewport

import android.annotation.SuppressLint
import android.content.res.Configuration
import android.content.res.Resources
import android.os.Bundle
import android.widget.Button
import androidx.appcompat.app.AppCompatActivity
import com.mapbox.api.directions.v5.models.DirectionsResponse
import com.mapbox.core.constants.Constants
import com.mapbox.geojson.LineString
import com.mapbox.geojson.Point
import com.mapbox.maps.*
import com.mapbox.maps.plugin.LocationPuck2D
import com.mapbox.maps.plugin.locationcomponent.location
import com.mapbox.maps.plugin.viewport.ViewportPlugin
import com.mapbox.maps.plugin.viewport.ViewportStatus
import com.mapbox.maps.plugin.viewport.data.FollowPuckViewportStateOptions
import com.mapbox.maps.plugin.viewport.data.OverviewViewportStateOptions
import com.mapbox.maps.plugin.viewport.state.FollowPuckViewportState
import com.mapbox.maps.plugin.viewport.state.OverviewViewportState
import com.mapbox.maps.plugin.viewport.state.ViewportState
import com.mapbox.maps.plugin.viewport.viewport
import com.mapbox.maps.testapp.R
import com.mapbox.maps.testapp.databinding.ActivityViewportAnimationBinding
import com.mapbox.maps.testapp.examples.annotation.AnnotationUtils
import com.mapbox.maps.testapp.utils.SimulateRouteLocationProvider

/**
* Showcase the use age of viewport plugin.
*
* Use button to toggle the following and overview mode.
*
* @see [User location guide](https://docs.mapbox.com/android/maps/guides/user-location/#location-tracking)
*/
class ViewportShowcaseActivity : AppCompatActivity() {
private lateinit var mapboxMap: MapboxMap
private lateinit var mapView: MapView
private lateinit var viewportButton: Button
private lateinit var viewport: ViewportPlugin
private lateinit var followPuckViewportState: FollowPuckViewportState
private lateinit var overviewViewportState: OverviewViewportState
private val pixelDensity = Resources.getSystem().displayMetrics.density
private val simulateRouteLocationProvider by lazy {
SimulateRouteLocationProvider(
LineString.fromPolyline(
DirectionsResponse.fromJson(
AnnotationUtils.loadStringFromAssets(
this,
NAVIGATION_ROUTE_JSON_NAME
)
).routes()[0].geometry()!!,
Constants.PRECISION_6
)
)
}

private val overviewPadding: EdgeInsets by lazy {
EdgeInsets(
140.0 * pixelDensity,
40.0 * pixelDensity,
120.0 * pixelDensity,
40.0 * pixelDensity
)
}
private val landscapeOverviewPadding: EdgeInsets by lazy {
EdgeInsets(
30.0 * pixelDensity,
380.0 * pixelDensity,
20.0 * pixelDensity,
20.0 * pixelDensity
)
}
private val followingPadding: EdgeInsets by lazy {
EdgeInsets(
180.0 * pixelDensity,
40.0 * pixelDensity,
150.0 * pixelDensity,
40.0 * pixelDensity
)
}
private val landscapeFollowingPadding: EdgeInsets by lazy {
EdgeInsets(
30.0 * pixelDensity,
380.0 * pixelDensity,
110.0 * pixelDensity,
40.0 * pixelDensity
)
}

override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
val binding = ActivityViewportAnimationBinding.inflate(layoutInflater)
setContentView(binding.root)
viewportButton = binding.switchButton
mapView = binding.mapView
mapboxMap = binding.mapView.mapboxMap.apply {
subscribeStyleLoaded {
setCamera(
CameraOptions.Builder()
.zoom(14.0)
.center(Point.fromLngLat(POINT_LNG, POINT_LAT))
.build()
)
binding.mapView.location.apply {
setLocationProvider(simulateRouteLocationProvider)
updateSettings {
locationPuck = LocationPuck2D(
bearingImage = ImageHolder.from(R.drawable.mapbox_mylocation_icon_bearing)
)
puckBearingEnabled = true
}
}
}
}
setupViewportPlugin()
}

@SuppressLint("SetTextI18n")
private fun setupViewportPlugin() {
viewport = mapView.viewport
followPuckViewportState =
viewport.makeFollowPuckViewportState(FollowPuckViewportStateOptions.Builder().build())
overviewViewportState =
viewport.makeOverviewViewportState(
OverviewViewportStateOptions.Builder().geometry(simulateRouteLocationProvider.route).build()
)
viewport.addStatusObserver { from, to, reason ->
logI(
TAG,
"""
ViewportStatus changed:
from: $from,
to: $to,
with reason: $reason
""".trimIndent()
)
when (to.getCurrentOrNextState()) {
is FollowPuckViewportState -> viewportButton.text = OVERVIEW
else -> viewportButton.text = FOLLOW
}
}
if (resources.configuration.orientation == Configuration.ORIENTATION_LANDSCAPE) {
followPuckViewportState.apply {
options = options.toBuilder().padding(landscapeFollowingPadding).build()
}
overviewViewportState.apply {
options = options.toBuilder().padding(landscapeOverviewPadding).build()
}
} else {
followPuckViewportState.apply {
options = options.toBuilder().padding(followingPadding).build()
}
overviewViewportState.apply {
options = options.toBuilder().padding(overviewPadding).build()
}
}
viewportButton.setOnClickListener {
when (viewportButton.text) {
FOLLOW -> viewport.transitionTo(followPuckViewportState)
OVERVIEW -> viewport.transitionTo(overviewViewportState)
}
}
}

companion object {
private const val TAG = "ViewportShowcase"
private const val FOLLOW = "Follow"
private const val OVERVIEW = "Overview"
private const val POINT_LAT = 34.052235
private const val POINT_LNG = -118.243683
private const val NAVIGATION_ROUTE_JSON_NAME = "navigation_route.json"
}
}

private fun ViewportStatus.getCurrentOrNextState(): ViewportState? =
when (this) {
is ViewportStatus.State -> state
is ViewportStatus.Transition -> toState
ViewportStatus.Idle -> null
}
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