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[android] - circle with radius expressed in physical measurement using turf.

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This commit is contained in:
tobrun
2019-04-15 15:53:50 +02:00
committed by Tobrun
parent 0adfddfbda
commit 395f17f615
2 changed files with 15 additions and 8 deletions
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21
platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/turf/PhysicalUnitCircleActivity.kt
View File

@@ -8,9 +8,8 @@ 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.layers.BackgroundLayer
import com.mapbox.mapboxsdk.style.expressions.Expression.*
import com.mapbox.mapboxsdk.style.layers.FillLayer
import com.mapbox.mapboxsdk.style.layers.PropertyFactory.backgroundColor
import com.mapbox.mapboxsdk.style.layers.PropertyFactory.fillColor
import com.mapbox.mapboxsdk.style.sources.GeoJsonSource
import com.mapbox.mapboxsdk.testapp.R
@@ -25,6 +24,9 @@ class PhysicalUnitCircleActivity : AppCompatActivity(), SeekBar.OnSeekBarChangeL
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
@@ -38,12 +40,12 @@ class PhysicalUnitCircleActivity : AppCompatActivity(), SeekBar.OnSeekBarChangeL
mapView.getMapAsync { mapboxMap ->
mapboxMap.cameraPosition = CameraPosition.Builder()
.target(LatLng(22.928207, 15.011543))
.zoom(10.0)
.target(LatLng(LATITUDE, LONGITUDE))
.zoom(ZOOM)
.build()
source = GeoJsonSource(SOURCE_ID, TurfTransformation.circle(
Point.fromLngLat(0.0, 0.0), 9000.0, 10, "meters")
Point.fromLngLat(LONGITUDE, LATITUDE), 9000.0, 10, "meters")
)
stepsBar.setOnSeekBarChangeListener(this)
@@ -51,7 +53,12 @@ class PhysicalUnitCircleActivity : AppCompatActivity(), SeekBar.OnSeekBarChangeL
mapboxMap.setStyle(Style.Builder()
.fromUrl(Style.SATELLITE_STREETS)
.withLayer(FillLayer(LAYER_ID, SOURCE_ID).withProperties(fillColor(Color.RED)))
.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)
)
}
@@ -66,7 +73,7 @@ class PhysicalUnitCircleActivity : AppCompatActivity(), SeekBar.OnSeekBarChangeL
}
source.setGeoJson(TurfTransformation.circle(
Point.fromLngLat(0.0, 0.0), radius, steps, "meters")
Point.fromLngLat(LONGITUDE, LATITUDE), radius, steps, "meters")
)
}
}

2
platform/android/MapboxGLAndroidSDKTestApp/src/main/res/layout/activity_physical_circle.xml
View File

@@ -24,7 +24,7 @@
android:id="@+id/radiusBar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="48dp"
android:layout_marginBottom="16dp"
android:progress="9000"
android:max="15000"
android:layout_above="@id/stepsBar"/>