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[maps-android] elevated line example (#4962)
GitOrigin-RevId: a7e481836d9b32c8c2248535c5e7ddebf5a6d3b7
1 parent 0322564 commit dd31f57

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8 files changed

+365
-14
lines changed

8 files changed

+365
-14
lines changed

‎app/src/main/AndroidManifest.xml‎

Lines changed: 22 additions & 14 deletions
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@@ -17,8 +17,7 @@
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android:theme="@style/AppTheme"
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android:usesCleartextTraffic="true"
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tools:ignore="GoogleAppIndexingWarning,UnusedAttribute">
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<profileable android:shell="true"/>
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<profileable android:shell="true" />
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<activity
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android:name=".ExampleOverviewActivity"
@@ -144,7 +143,7 @@
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android:name=".examples.java.RuntimeStylingJavaActivity"
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android:description="@string/description_dsl_styling"
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android:exported="true"
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android:label="@string/activity_java_runtime_dsl_styling" >
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android:label="@string/activity_java_runtime_dsl_styling">
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<meta-data
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android:name="android.support.PARENT_ACTIVITY"
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android:value=".ExampleOverviewActivity" />
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android:name="android.support.PARENT_ACTIVITY"
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android:value=".ExampleOverviewActivity" />
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</activity>
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<activity
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android:name=".examples.terrain3D.Lights3DActivity"
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android:description="@string/description_lights3d"
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android:name="android.support.PARENT_ACTIVITY"
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android:value=".ExampleOverviewActivity" />
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</activity>
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<activity
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android:name=".examples.OngoingAnimationActivity"
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android:description="@string/description_animate_camera_during_gesture"
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android:name="android.support.PARENT_ACTIVITY"
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android:value=".ExampleOverviewActivity" />
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</activity>
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<activity
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android:name=".examples.snapshotter.MapViewSnapshotActivity"
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android:description="@string/description_view_snapshot"
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android:name="android.support.PARENT_ACTIVITY"
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android:value=".ExampleOverviewActivity" />
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</activity>
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<activity
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android:name=".examples.customlayer.TriangleCustomLayerActivity"
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android:description="@string/description_triangle_custom_layer"
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<intent-filter>
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<action android:name="android.service.wallpaper.WallpaperService" />
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</intent-filter>
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<meta-data
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android:name="android.service.wallpaper"
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android:resource="@xml/map_wallpaper" />
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<meta-data
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android:name="android.support.PARENT_ACTIVITY"
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android:value=".ExampleOverviewActivity" />
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</activity>
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<!-- View annotations -->
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</activity> <!-- View annotations -->
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<activity
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android:name=".examples.markersandcallouts.viewannotation.ViewAnnotationShowcaseActivity"
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android:description="@string/description_view_annotation"
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<meta-data
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android:name="android.support.PARENT_ACTIVITY"
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android:value=".ExampleOverviewActivity" />
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</activity>
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<!-- -->
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</activity> <!-- -->
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<activity
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android:name=".examples.viewport.ViewportShowcaseActivity"
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android:description="@string/description_viewport"
@@ -1313,8 +1307,8 @@
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android:exported="true" />
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<activity
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android:name=".EmptyFragmentActivity"
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android:theme="@android:style/Theme.Material.Light"
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android:exported="true" />
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android:exported="true"
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android:theme="@android:style/Theme.Material.Light" />
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<activity
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android:name=".examples.SecondaryDisplayPresentationActivity"
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android:description="@string/description_secondary_display_presentation"
@@ -1339,9 +1333,11 @@
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android:name="android.support.PARENT_ACTIVITY"
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android:value=".ExampleOverviewActivity" />
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</activity>
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<meta-data
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android:name="com.mapbox.maps.ThreadChecker"
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android:value="true" />
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<activity
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android:name=".examples.terrain3D.ModelLayerActivity"
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android:description="@string/description_model_layer"
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android:name="android.support.PARENT_ACTIVITY"
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android:value=".ExampleOverviewActivity" />
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</activity>
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<activity
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android:name=".examples.ElevatedLineActivity"
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android:description="@string/description_elevated_line"
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android:label="@string/activity_elevated_line"
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android:exported="true">
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<meta-data
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android:name="@string/category"
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android:value="@string/category_3D" />
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<meta-data
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android:name="android.support.PARENT_ACTIVITY"
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android:value=".ExampleOverviewActivity" />
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</activity>
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</application>
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</manifest>
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</manifest>

‎app/src/main/java/com/mapbox/maps/testapp/examples/ElevatedLineActivity.kt‎

Lines changed: 161 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,161 @@
1+
package com.mapbox.maps.testapp.examples
2+
3+
import android.graphics.Color
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import android.os.Bundle
5+
import androidx.appcompat.app.AppCompatActivity
6+
import com.google.gson.JsonArray
7+
import com.google.gson.JsonObject
8+
import com.mapbox.geojson.Feature
9+
import com.mapbox.geojson.LineString
10+
import com.mapbox.geojson.Point
11+
import com.mapbox.maps.MapInitOptions
12+
import com.mapbox.maps.MapView
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import com.mapbox.maps.MapboxExperimental
14+
import com.mapbox.maps.Style
15+
import com.mapbox.maps.dsl.cameraOptions
16+
import com.mapbox.maps.extension.style.expressions.dsl.generated.atInterpolated
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import com.mapbox.maps.extension.style.layers.generated.lineLayer
18+
import com.mapbox.maps.extension.style.layers.properties.generated.LineElevationReference
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import com.mapbox.maps.extension.style.layers.properties.generated.LineJoin
20+
import com.mapbox.maps.extension.style.layers.properties.generated.ProjectionName
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import com.mapbox.maps.extension.style.projection.generated.projection
22+
import com.mapbox.maps.extension.style.sources.generated.geoJsonSource
23+
import com.mapbox.maps.extension.style.style
24+
25+
/**
26+
* Example of adding an elevated line to a map.
27+
* This example is based on mapbox-gl-js example: https://docs.mapbox.com/mapbox-gl-js/example/elevated-line/
28+
*/
29+
class ElevatedLineActivity : AppCompatActivity() {
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31+
@OptIn(MapboxExperimental::class)
32+
override fun onCreate(savedInstanceState: Bundle?) {
33+
super.onCreate(savedInstanceState)
34+
val mapInitOptions = MapInitOptions(
35+
this,
36+
cameraOptions = CAMERA_OPTIONS,
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)
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val mapView = MapView(this, mapInitOptions)
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setContentView(mapView)
40+
mapView.mapboxMap.loadStyle(
41+
style(Style.STANDARD) {
42+
+geoJsonSource(LINE_SOURCE_ID) {
43+
lineMetrics(true)
44+
feature(createLineStringFeature(COORDINATES, ELEVATIONS))
45+
}
46+
// add the elevated line layer
47+
+lineLayer(LINE_LAYER_ID, LINE_SOURCE_ID) {
48+
lineJoin(LineJoin.ROUND)
49+
lineWidth(8.0)
50+
lineColor(Color.BLUE)
51+
lineEmissiveStrength(1.0)
52+
lineElevationReference(LineElevationReference.SEA)
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lineZOffset(
54+
atInterpolated {
55+
product {
56+
lineProgress()
57+
subtract {
58+
length { get(ELEVATION_PROPERTY_KEY) }
59+
literal(1)
60+
}
61+
}
62+
get(ELEVATION_PROPERTY_KEY)
63+
}
64+
)
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}
66+
}
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)
68+
}
69+
70+
private fun createLineStringFeature(coordinates: List<Point>, elevations: List<Double>): Feature {
71+
val properties = JsonObject()
72+
// add an array of elevation values.
73+
// the number of values doesn't need to match the number of coordinates.
74+
JsonArray().apply {
75+
elevations.forEach(::add)
76+
}.let { elevationsArray ->
77+
properties.add(ELEVATION_PROPERTY_KEY, elevationsArray)
78+
}
79+
return Feature.fromGeometry(LineString.fromLngLats(coordinates), properties)
80+
}
81+
82+
companion object {
83+
private const val ELEVATION_PROPERTY_KEY = "elevation"
84+
private const val LINE_SOURCE_ID = "geojson"
85+
private const val LINE_LAYER_ID = "elevated-line"
86+
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private val CAMERA_OPTIONS = cameraOptions {
88+
center(Point.fromLngLat(6.7782, 45.8418))
89+
zoom(11.0)
90+
bearing(-150.0)
91+
pitch(62.0)
92+
projection(ProjectionName.MERCATOR)
93+
}
94+
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private val ELEVATIONS = arrayOf(
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4600, 4600, 4600, 4599, 4598, 4596, 4593, 4590, 4584, 4578, 4569,
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4559, 4547, 4533, 4516, 4497, 4475, 4450, 4422, 4390, 4355, 4316,
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4275, 4227, 4177, 4124, 4068, 4009, 3946, 3880, 3776, 3693, 3599,
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3502, 3398, 3290, 3171, 3052, 2922, 2786, 2642, 2490, 2332, 2170,
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1994, 1810, 1612, 1432, 1216, 1000
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).map { it.toDouble() }
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private val COORDINATES = listOf(
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Point.fromLngLat(6.862885, 45.833563),
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Point.fromLngLat(6.863605, 45.846851),
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Point.fromLngLat(6.859783, 45.862445),
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Point.fromLngLat(6.848727, 45.876361),
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Point.fromLngLat(6.827155, 45.892361),
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Point.fromLngLat(6.802194, 45.905032),
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Point.fromLngLat(6.780023, 45.909602),
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Point.fromLngLat(6.753605, 45.906074),
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Point.fromLngLat(6.728807, 45.899120),
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Point.fromLngLat(6.700449, 45.883872),
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Point.fromLngLat(6.683772, 45.863866),
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Point.fromLngLat(6.684058, 45.841619),
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Point.fromLngLat(6.691115, 45.825417),
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Point.fromLngLat(6.704446, 45.813349),
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Point.fromLngLat(6.720959, 45.807886),
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Point.fromLngLat(6.748477, 45.809517),
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Point.fromLngLat(6.775554, 45.817254),
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Point.fromLngLat(6.791236, 45.828871),
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Point.fromLngLat(6.801289, 45.838797),
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Point.fromLngLat(6.806307, 45.849788),
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Point.fromLngLat(6.803161, 45.866159),
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Point.fromLngLat(6.794599, 45.880461),
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Point.fromLngLat(6.769846, 45.890231),
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Point.fromLngLat(6.744712, 45.889576),
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Point.fromLngLat(6.722788, 45.881677),
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Point.fromLngLat(6.708097, 45.868556),
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Point.fromLngLat(6.699435, 45.851973),
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Point.fromLngLat(6.707324, 45.832980),
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Point.fromLngLat(6.723743, 45.822384),
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Point.fromLngLat(6.739347, 45.818626),
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Point.fromLngLat(6.756019, 45.822069),
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Point.fromLngLat(6.773963, 45.832436),
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Point.fromLngLat(6.785920, 45.848229),
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Point.fromLngLat(6.786155, 45.860521),
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Point.fromLngLat(6.774430, 45.870586),
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Point.fromLngLat(6.749012, 45.875670),
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Point.fromLngLat(6.731251, 45.868501),
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Point.fromLngLat(6.716033, 45.853689),
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Point.fromLngLat(6.714748, 45.846970),
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Point.fromLngLat(6.714635, 45.838934),
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Point.fromLngLat(6.717850, 45.832829),
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Point.fromLngLat(6.724010, 45.828151),
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Point.fromLngLat(6.730551, 45.827333),
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Point.fromLngLat(6.733951, 45.829900),
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Point.fromLngLat(6.735957, 45.834154),
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Point.fromLngLat(6.735286, 45.839871),
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Point.fromLngLat(6.734471, 45.843933),
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Point.fromLngLat(6.730893, 45.847233),
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Point.fromLngLat(6.728550, 45.847899),
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Point.fromLngLat(6.726590, 45.847822),
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Point.fromLngLat(6.724876, 45.846455),
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Point.fromLngLat(6.725096, 45.843900),
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Point.fromLngLat(6.726635, 45.841201),
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Point.fromLngLat(6.728074, 45.837041),
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Point.fromLngLat(6.727822, 45.834292),
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)
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}
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}

‎app/src/main/res/values/example_descriptions.xml‎

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<string name="description_location_component_model_animation">Animate 3D location puck on the map</string>
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<string name="description_precipitation">Showcase rain and snow effects.</string>
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<string name="description_color_theme">Showcase color theme.</string>
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<string name="description_elevated_line">Showcase line elevation</string>
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</resources>

‎app/src/main/res/values/example_titles.xml‎

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<string name="activity_location_component_model_animation">Location component model animation</string>
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<string name="activity_precipitation">Precipitations example</string>
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<string name="activity_color_theme">Color theme example</string>
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<string name="activity_elevated_line">Elevated line example</string>
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</resources>

‎compose-app/src/main/AndroidManifest.xml‎

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android:name="@string/category"
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android:value="@string/category_styles" />
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</activity>
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<activity
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android:name=".examples.style.ElevatedLineActivity"
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android:description="@string/description_elevated_line"
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android:exported="true"
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android:label="@string/activity_elevated_line"
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android:parentActivityName=".examples.style.ExampleOverviewActivity">
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<meta-data
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android:name="@string/category"
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android:value="@string/category_styles" />
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</activity>
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</application>
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</manifest>

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