Style point with scene symbol | ArcGIS Maps SDK for Kotlin

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Sample viewer app

Show various kinds of 3D symbols in a scene.

Image of style point with scene symbol

Use case

You can programmatically create different types of 3D symbols and add them to a scene at specified locations. You could do this to call attention to the prominence of a location.

How to use the sample

When the scene loads, note the different types of 3D symbols that you can create.

How it works

Create a graphics overlay.
Create various simple marker scene symbols by specifying different styles and colors, and a height, width, depth, and anchor position of each.
Create a graphic for each symbol.
Add the graphics to the graphics overlay.
Add the graphics overlay to the scene view.

Relevant API

SceneSymbolAnchorPosition
SimpleMarkerSceneSymbol
SimpleMarkerSceneSymbolStyle

About the data

This sample shows arbitrary symbols in an empty scene with imagery basemap.

Sample Code

MainActivity.kt

StylePointWithSceneSymbolViewModel.kt

StylePointWithSceneSymbolScreen.kt

/* Copyright 2025 Esri
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

package com.esri.arcgismaps.sample.stylepointwithscenesymbol

import android.os.Bundle
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.Surface
import androidx.compose.runtime.Composable
import com.arcgismaps.ApiKey
import com.arcgismaps.ArcGISEnvironment
import com.esri.arcgismaps.sample.sampleslib.theme.SampleAppTheme
import com.esri.arcgismaps.sample.stylepointwithscenesymbol.screens.StylePointWithSceneSymbolScreen

class MainActivity : ComponentActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        // authentication with an API key or named user is
        // required to access basemaps and other location services
        ArcGISEnvironment.apiKey = ApiKey.create(BuildConfig.ACCESS_TOKEN)

        setContent {
            SampleAppTheme {
                StylePointWithSceneSymbolApp()
            }
        }
    }

    @Composable
    private fun StylePointWithSceneSymbolApp() {
        Surface(color = MaterialTheme.colorScheme.background) {
            StylePointWithSceneSymbolScreen(
                sampleName = getString(R.string.style_point_with_scene_symbol_app_name)
            )
        }
    }
}

/* Copyright 2025 Esri
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

package com.esri.arcgismaps.sample.stylepointwithscenesymbol.components

import android.app.Application
import androidx.lifecycle.AndroidViewModel
import androidx.lifecycle.viewModelScope
import com.arcgismaps.Color
import com.arcgismaps.geometry.Point
import com.arcgismaps.geometry.SpatialReference
import com.arcgismaps.mapping.ArcGISScene
import com.arcgismaps.mapping.ArcGISTiledElevationSource
import com.arcgismaps.mapping.BasemapStyle
import com.arcgismaps.mapping.Viewpoint
import com.arcgismaps.mapping.symbology.SceneSymbolAnchorPosition
import com.arcgismaps.mapping.view.GraphicsOverlay
import com.arcgismaps.mapping.view.Graphic
import com.arcgismaps.mapping.view.SurfacePlacement
import com.arcgismaps.mapping.view.Camera
import com.arcgismaps.mapping.symbology.SimpleMarkerSceneSymbol
import com.arcgismaps.mapping.symbology.SimpleMarkerSceneSymbolStyle
import com.esri.arcgismaps.sample.sampleslib.components.MessageDialogViewModel
import kotlinx.coroutines.launch

/**
 * ViewModel for the StylePointWithSceneSymbol sample.
 */
class StylePointWithSceneSymbolViewModel(application: Application) : AndroidViewModel(application) {

    // Message dialog view model used to show errors
    val messageDialogVM = MessageDialogViewModel()

    // Set an initial camera position
    private val camera = Camera(
        latitude = 48.973,
        longitude = 4.92,
        altitude = 2082.0,
        heading = 60.0,
        pitch = 75.0,
        roll = 0.0
    )

    // Create the scene used by the SceneView.
    var arcGISScene = ArcGISScene(BasemapStyle.ArcGISTopographic).apply {
        initialViewpoint = Viewpoint(
            boundingGeometry = camera.location,
            camera = camera
        )
        // add an elevation source to the base surface
        baseSurface.elevationSources.add(
            ArcGISTiledElevationSource(
                "https://elevation3d.arcgis.com/arcgis/rest/services/WorldElevation3D/Terrain3D/ImageServer"
            )
        )
    }

    // Graphics overlay that will contain the 3D symbols. SurfacePlacement.Absolute so symbols use absolute Z values.
    val graphicsOverlay = GraphicsOverlay(graphics = makeSceneSymbolGraphics()).apply {
        sceneProperties.surfacePlacement = SurfacePlacement.Absolute
    }

    init {
        // Load the scene and show a message dialog if loading fails
        viewModelScope.launch {
            arcGISScene.load().onFailure {
                messageDialogVM.showMessageDialog(it)
            }
        }
    }

    /**
     * Create a list of graphics each using a [SimpleMarkerSceneSymbol] of different styles.
     */
    private fun makeSceneSymbolGraphics(): List<Graphic> {
        // Scene symbol styles to show
        val styles = listOf(
            SimpleMarkerSceneSymbolStyle.Cone,
            SimpleMarkerSceneSymbolStyle.Cube,
            SimpleMarkerSceneSymbolStyle.Cylinder,
            SimpleMarkerSceneSymbolStyle.Diamond,
            SimpleMarkerSceneSymbolStyle.Sphere,
            SimpleMarkerSceneSymbolStyle.Tetrahedron
        )

        // Starting location and spacing in longitude
        val startLongitude = 4.975
        val latitude = 49.0
        val altitude = 500.0
        val spacing = 0.01

        return styles.mapIndexed { index, style ->
            // Create a scene symbol for the style
            val symbol = SimpleMarkerSceneSymbol(
                style = style,
                color = randomColor(),
                height = 200.0,
                width = 200.0,
                depth = 200.0,
                anchorPosition = SceneSymbolAnchorPosition.Center
            )

            // Position the symbol slightly offset in longitude for each symbol
            val point = Point(
                x = startLongitude + spacing * index,
                y = latitude,
                z = altitude,
                spatialReference = SpatialReference.wgs84()
            )

            Graphic(geometry = point, symbol = symbol)
        }
    }

    /**
     * Helper function to produce a random color using ArcGIS [Color.fromRgba]
     */
    private fun randomColor(): Color {
        val r = (0..255).random()
        val g = (0..255).random()
        val b = (0..255).random()
        return Color.fromRgba(r, g, b, 255)
    }
}

/* Copyright 2025 Esri
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

package com.esri.arcgismaps.sample.stylepointwithscenesymbol.screens

import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.padding
import androidx.compose.material3.Scaffold
import androidx.compose.runtime.Composable
import androidx.compose.ui.Modifier
import androidx.lifecycle.viewmodel.compose.viewModel
import com.arcgismaps.toolkit.geoviewcompose.SceneView
import com.esri.arcgismaps.sample.stylepointwithscenesymbol.components.StylePointWithSceneSymbolViewModel
import com.esri.arcgismaps.sample.sampleslib.components.MessageDialog
import com.esri.arcgismaps.sample.sampleslib.components.SampleTopAppBar

/**
 * Compose screen that displays a SceneView showing several 3D SimpleMarkerSceneSymbols.
 * The ArcGIS Scene and GraphicsOverlay are provided by the ViewModel.
 */
@Composable
fun StylePointWithSceneSymbolScreen(sampleName: String) {
    val viewModel: StylePointWithSceneSymbolViewModel = viewModel()

    Scaffold(
        topBar = { SampleTopAppBar(title = sampleName) },
        content = { paddingValues ->
            // Render the SceneView using scene and graphics overlay from the ViewModel.
            SceneView(
                modifier = Modifier
                    .fillMaxSize()
                    .padding(paddingValues),
                arcGISScene = viewModel.arcGISScene,
                graphicsOverlays = listOf(viewModel.graphicsOverlay)
            )

            // Display an error dialog from the ViewModel when needed
            viewModel.messageDialogVM.apply {
                if (dialogStatus) {
                    MessageDialog(
                        title = messageTitle,
                        description = messageDescription,
                        onDismissRequest = ::dismissDialog
                    )
                }
            }
        }
    )
}