Add clip layer
Android Examples App Available
This example code is part of the Maps SDK for Android Examples App, a working Android project available on GitHub. Android developers are encouraged to run the examples app locally to interact with this example in an emulator and explore other features of the Maps SDK.
See our Run the Maps SDK for Android Examples App tutorial for step-by-step instructions.
ClipLayerActivity.kt
package com.mapbox.maps.compose.testapp.examples.style
import android.os.Bundle
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.shape.RoundedCornerShape
import androidx.compose.material.FloatingActionButton
import androidx.compose.material.Text
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.setValue
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.unit.dp
import com.mapbox.geojson.Feature
import com.mapbox.geojson.Point
import com.mapbox.geojson.Polygon
import com.mapbox.maps.MapboxExperimental
import com.mapbox.maps.Style
import com.mapbox.maps.compose.testapp.ExampleScaffold
import com.mapbox.maps.compose.testapp.ui.theme.MapboxMapComposeTheme
import com.mapbox.maps.dsl.cameraOptions
import com.mapbox.maps.extension.compose.MapboxMap
import com.mapbox.maps.extension.compose.animation.viewport.rememberMapViewportState
import com.mapbox.maps.extension.compose.style.ColorValue
import com.mapbox.maps.extension.compose.style.DoubleValue
import com.mapbox.maps.extension.compose.style.GenericStyle
import com.mapbox.maps.extension.compose.style.layers.generated.ClipLayer
import com.mapbox.maps.extension.compose.style.layers.generated.ClipLayerTypes
import com.mapbox.maps.extension.compose.style.layers.generated.ClipLayerTypesListValue
import com.mapbox.maps.extension.compose.style.layers.generated.FillLayer
import com.mapbox.maps.extension.compose.style.slotsContent
import com.mapbox.maps.extension.compose.style.sources.GeoJSONData
import com.mapbox.maps.extension.compose.style.sources.generated.rememberGeoJsonSourceState
/**
* Example showcasing the usage of [com.mapbox.maps.extension.style.layers.generated.ClipLayer].
*/
@OptIn(MapboxExperimental::class)
public class ClipLayerActivity : ComponentActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContent {
var showClipSymbol by remember {
mutableStateOf(false)
}
var showClipModel by remember {
mutableStateOf(false)
}
var showClipModelAndSymbol by remember {
mutableStateOf(false)
}
val geoJsonSource = rememberGeoJsonSourceState {
data = GeoJSONData(
listOf(
Feature.fromGeometry(Polygon.fromLngLats(POLYGON_POINTS))
)
)
}
MapboxMapComposeTheme {
ExampleScaffold(
floatingActionButton = {
Column {
FloatingActionButton(
modifier = Modifier.padding(bottom = 10.dp),
onClick = {
showClipSymbol = true
},
shape = RoundedCornerShape(16.dp),
) {
Text(modifier = Modifier.padding(10.dp), text = "Clip symbol")
}
FloatingActionButton(
modifier = Modifier.padding(bottom = 10.dp),
onClick = {
showClipModel = true
},
shape = RoundedCornerShape(16.dp),
) {
Text(modifier = Modifier.padding(10.dp), text = "Clip model")
}
FloatingActionButton(
modifier = Modifier.padding(bottom = 10.dp),
onClick = {
showClipModelAndSymbol = true
},
shape = RoundedCornerShape(16.dp),
) {
Text(modifier = Modifier.padding(10.dp), text = "Clip model and symbol")
}
FloatingActionButton(
modifier = Modifier.padding(bottom = 10.dp),
onClick = {
showClipSymbol = false
showClipModel = false
showClipModelAndSymbol = false
},
shape = RoundedCornerShape(16.dp),
) {
Text(modifier = Modifier.padding(10.dp), text = "Hide clip layer")
}
}
}
) {
MapboxMap(
Modifier.fillMaxSize(),
mapViewportState = rememberMapViewportState {
setCameraOptions(START_CAMERA_POSITION)
},
style = {
GenericStyle(
style = Style.STANDARD,
slotsContent = slotsContent {
slot("bottom") {
FillLayer(sourceState = geoJsonSource) {
fillColor = ColorValue(Color.Blue)
fillOpacity = DoubleValue(0.4)
}
}
}
)
}
) {
if (showClipSymbol) {
ClipLayer(
sourceState = geoJsonSource,
) {
clipLayerTypes = ClipLayerTypesListValue(listOf(ClipLayerTypes.MODEL))
}
}
if (showClipModel) {
ClipLayer(
sourceState = geoJsonSource,
) {
clipLayerTypes = ClipLayerTypesListValue(listOf(ClipLayerTypes.SYMBOL))
}
}
if (showClipModelAndSymbol) {
ClipLayer(
sourceState = geoJsonSource,
) {
clipLayerTypes =
ClipLayerTypesListValue(listOf(ClipLayerTypes.MODEL, ClipLayerTypes.SYMBOL))
}
}
}
}
}
}
}
public companion object {
private val CENTER = Point.fromLngLat(-74.0027, 40.7130)
private val START_CAMERA_POSITION = cameraOptions {
center(CENTER)
zoom(16.5)
bearing(60.0)
pitch(30.0)
}
private val POLYGON_POINTS = listOf(
listOf(
Point.fromLngLat(
-74.00438542864366,
40.71275107696869
),
Point.fromLngLat(
-74.00465916994656,
40.712458268827675
),
Point.fromLngLat(
-74.00417333128154,
40.71212099900339
),
Point.fromLngLat(
-74.00314623457163,
40.71238635014873
),
Point.fromLngLat(
-74.00088173461268,
40.71296692136764
),
Point.fromLngLat(
-74.00081475001514,
40.713220461793924
),
Point.fromLngLat(
-74.0024425998592,
40.71419501190087
),
Point.fromLngLat(
-74.00341033210208,
40.71374214594772
),
Point.fromLngLat(
-74.00438542864366,
40.71275107696869
),
)
)
}
}
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