Learn how to find a route and directions with the route service .
Routing is the process of finding the path from an origin to a destination in a street network. You can use the route service to find routes , get driving directions, calculate drive times, and solve complicated, multiple vehicle routing problems. To create a route, you typically define a set of stops (origin and one or more destinations) and use the service to find a route with directions. You can also use a number of additional parameters such as barriers and mode of travel to refine the results.
In this tutorial, you define an origin and destination by clicking on the map. These values are used to get a route and directions from the route service. The directions are also displayed on the map.
Prerequisites You need an ArcGIS Developer or ArcGIS Online account to access the developer dashboard and create an API key .
Steps Create a new pen To get started, either complete the Display a scene tutorial or use this pen . Set the API key To access location services , you need an API key or OAuth 2.0 access token . To learn how to create and scope your key, visit the Create an API key tutorial.
Go to your dashboard to get an API key. The API key must be scoped to access the services used in this tutorial.
In CodePen , update api to use your key. Update cesium to use your Cesium ion access token .
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const apiKey = "YOUR_API_KEY" ;
Cesium.ArcGisMapService.defaultAccessToken = apiKey;
const cesiumAccessToken = "YOUR_CESIUM_ACCESS_TOKEN" ;
Cesium.Ion.defaultAccessToken = cesiumAccessToken;
const arcGisImagery = Cesium.ArcGisMapServerImageryProvider.fromBasemapType(Cesium.ArcGisBaseMapType.SATELLITE);
const viewer = new Cesium.Viewer( "cesiumContainer" , {
baseLayer : Cesium.ImageryLayer.fromProviderAsync(arcGisImagery),
});
Add references to ArcGIS REST JS In the <head> element, reference the routingrequest
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< script src = "https://cesium.com/downloads/cesiumjs/releases/1.107/Build/Cesium/Cesium.js" > </ script >
< link href = "https://cesium.com/downloads/cesiumjs/releases/1.107/Build/Cesium/Widgets/widgets.css" rel = "stylesheet" >
< script src = "https://unpkg.com/@esri/arcgis-rest-request@4.0.0/dist/bundled/request.umd.js" > </ script >
< script src = "https://unpkg.com/@esri/arcgis-rest-routing@4.0.0/dist/bundled/routing.umd.js" > </ script >
Update the scene This routing application uses an integrated mesh layer of Frankfurt, Germany. Update the scene extent to focus on Frankfurt.
Update the set command to center on location [8.68019, 50.1147], Frankfurt.
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viewer.camera.setView({
destination : Cesium.Cartesian3.fromDegrees( 8.68019 , 50.1147 , 500 ),
orientation : {
heading : Cesium.Math.toRadians(- 120 ),
pitch : Cesium.Math.toRadians(- 28.0 ),
}
});
Add the Frankfurt integrated mesh layer to the scene as an I3SData
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viewer.camera.setView({
destination : Cesium.Cartesian3.fromDegrees( 8.68019 , 50.1147 , 500 ),
orientation : {
heading : Cesium.Math.toRadians(- 120 ),
pitch : Cesium.Math.toRadians(- 28.0 ),
}
});
const geoidService = await Cesium.ArcGISTiledElevationTerrainProvider.fromUrl( "https://tiles.arcgis.com/tiles/z2tnIkrLQ2BRzr6P/arcgis/rest/services/EGM2008/ImageServer" );
const i3sProvider = await Cesium.I3SDataProvider.fromUrl( "https://tiles.arcgis.com/tiles/cFEFS0EWrhfDeVw9/arcgis/rest/services/Buildings_Frankfurt_2021/SceneServer" , {
geoidTiledTerrainProvider : geoidService,
token : apiKey
})
viewer.scene.primitives.add(i3sProvider);
Create start and end point graphics BillboardBillboard entities to display custom pins and images.
Add two new Billboardpositionnull.
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const geoidService = await Cesium.ArcGISTiledElevationTerrainProvider.fromUrl( "https://tiles.arcgis.com/tiles/z2tnIkrLQ2BRzr6P/arcgis/rest/services/EGM2008/ImageServer" );
const i3sProvider = await Cesium.I3SDataProvider.fromUrl( "https://tiles.arcgis.com/tiles/cFEFS0EWrhfDeVw9/arcgis/rest/services/Buildings_Frankfurt_2021/SceneServer" , {
geoidTiledTerrainProvider : geoidService,
token : apiKey
})
viewer.scene.primitives.add(i3sProvider);
const startPoint = viewer.entities.add({
name : 'start' ,
position : null ,
billboard : {
verticalOrigin : Cesium.VerticalOrigin.BOTTOM,
heightReference : Cesium.HeightReference.CLAMP_TO_GROUND,
}
})
const endPoint = viewer.entities.add({
name : 'end' ,
position : null ,
billboard : {
verticalOrigin : Cesium.VerticalOrigin.BOTTOM,
heightReference : Cesium.HeightReference.CLAMP_TO_GROUND,
}
})
Create a Pinimage
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const pinBuilder = new Cesium.PinBuilder();
const startPoint = viewer.entities.add({
name : 'start' ,
position : null ,
billboard : {
verticalOrigin : Cesium.VerticalOrigin.BOTTOM,
heightReference : Cesium.HeightReference.CLAMP_TO_GROUND,
image : pinBuilder.fromText( "1" ,Cesium.Color.fromCssColorString( '#348bdb' ), 48 ).toDataURL(),
}
})
const endPoint = viewer.entities.add({
name : 'end' ,
position : null ,
billboard : {
verticalOrigin : Cesium.VerticalOrigin.BOTTOM,
heightReference : Cesium.HeightReference.CLAMP_TO_GROUND,
image : pinBuilder.fromText( "2" ,Cesium.Color.fromCssColorString( '#348bdb' ), 48 ).toDataURL(),
}
})
Add a click handler Use an event handler to set the start (origin) and end (destination) points for the route. The first click will set the start for the route and the second click will set the end. Subsequent clicks will start a new route.
Create a current variable initialized to 'start'. Declare start and end variables that will be used within the click handler.
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const geoidService = await Cesium.ArcGISTiledElevationTerrainProvider.fromUrl( "https://tiles.arcgis.com/tiles/z2tnIkrLQ2BRzr6P/arcgis/rest/services/EGM2008/ImageServer" );
const i3sProvider = await Cesium.I3SDataProvider.fromUrl( "https://tiles.arcgis.com/tiles/cFEFS0EWrhfDeVw9/arcgis/rest/services/Buildings_Frankfurt_2021/SceneServer" , {
geoidTiledTerrainProvider : geoidService,
token : apiKey
})
viewer.scene.primitives.add(i3sProvider);
let currentStep = 'start' ;
let startCoords,endCoords;
const pinBuilder = new Cesium.PinBuilder();
Create a ScreenViewer that listens for left clicks. Create an o function that runs when a click is detected.
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const endPoint = viewer.entities.add({
name : 'end' ,
position : null ,
billboard : {
verticalOrigin : Cesium.VerticalOrigin.BOTTOM,
heightReference : Cesium.HeightReference.CLAMP_TO_GROUND,
image : pinBuilder.fromText( "2" ,Cesium.Color.fromCssColorString( '#348bdb' ), 48 ).toDataURL(),
}
})
function onLeftClick ( movement ) {
}
viewer.screenSpaceEventHandler.setInputAction(onLeftClick,Cesium.ScreenSpaceEventType.LEFT_CLICK);
Get the coordinates of the clicked location and use transform them from Cartesianrouting service .
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function onLeftClick ( movement ) {
const pickedPosition = viewer.scene.pickPosition(movement.position);
const cartographic = Cesium.Cartographic.fromCartesian(pickedPosition);
const point = [Cesium.Math.toDegrees(cartographic.longitude),Cesium.Math.toDegrees(cartographic.latitude)]
}
viewer.screenSpaceEventHandler.setInputAction(onLeftClick,Cesium.ScreenSpaceEventType.LEFT_CLICK);
Set the locations of the start and end billboards using a conditional statement. When a new starting position is set, remove all previous billboards and routes.
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function onLeftClick ( movement ) {
const pickedPosition = viewer.scene.pickPosition(movement.position);
const cartographic = Cesium.Cartographic.fromCartesian(pickedPosition);
const point = [Cesium.Math.toDegrees(cartographic.longitude),Cesium.Math.toDegrees(cartographic.latitude)]
if (currentStep === 'start' ) {
startCoords = point;
startPoint.position = pickedPosition;
viewer.dataSources.removeAll();
endPoint.position = null ;
endCoords = null ;
currentStep = 'end' ;
}
else {
endCoords = point;
endPoint.position = pickedPosition;
currentStep = 'start' ;
}
}
viewer.screenSpaceEventHandler.setInputAction(onLeftClick,Cesium.ScreenSpaceEventType.LEFT_CLICK);
Run the app. You should be able to click on the map to create two billboards that display the numbers "1" and "2". Subsequent clicks should set new positions for the billboards.
Get the route and directions To find a route between the points as well as turn-by-turn directions, use the ArcGIS REST JS solverouting service .
In order to access ArcGIS location services with ArcGIS REST JS , you need an access token , either an API key or a token created by OAuth 2.0 authentication. API keys have scopes, so make sure to scope your API key with permissions to access the service.
Create a new arcgis
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const apiKey = "YOUR_API_KEY" ;
Cesium.ArcGisMapService.defaultAccessToken = apiKey;
const authentication = arcgisRest.ApiKeyManager.fromKey(apiKey);
Create a function called get that accepts two sets of coordinate pairs. Inside, call arcgis
More info arcgis creates a direct request to the solve endpoint of the routing service . To learn more about the solve endpoint, go to the Routing service page in the Mapping APIs and location services guide.
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viewer.screenSpaceEventHandler.setInputAction(onLeftClick,Cesium.ScreenSpaceEventType.LEFT_CLICK);
function getRoute ( start,end ) {
arcgisRest
.solveRoute({
stops : [start,end],
authentication
})
}
Access the service response and add the returned GeoJSON to your application as a Geo
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function getRoute ( start,end ) {
arcgisRest
.solveRoute({
stops : [start,end],
authentication
})
.then( ( response ) => {
Cesium.GeoJsonDataSource.load(response.routes.geoJson,{
stroke :Cesium.Color.fromCssColorString( '#76fcfc' ),
strokeWidth : 5 ,
clampToGround : true
}).then( ( data )=> {
viewer.dataSources.add(data);
});
})
}
Access the directions returned by the service and format them as HTML. Create an invisible Entitydescription to display directions on the map.
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function getRoute ( start,end ) {
arcgisRest
.solveRoute({
stops : [start,end],
authentication
})
.then( ( response ) => {
Cesium.GeoJsonDataSource.load(response.routes.geoJson,{
stroke :Cesium.Color.fromCssColorString( '#76fcfc' ),
strokeWidth : 5 ,
clampToGround : true
}).then( ( data )=> {
viewer.dataSources.add(data);
});
const directionsHTML = response.directions[ 0 ].features.map( ( f ) => f.attributes.text).join( "<br/>" );
const directionsPopup = viewer.entities.add({
name : "Directions" ,
description :directionsHTML,
position :Cesium.Cartesian3.fromDegrees( 0 , 0 ),
});
viewer.selectedEntity = directionsPopup;
})
}
In your o function, call get when both a start point and end point have been set.
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function onLeftClick ( movement ) {
const pickedPosition = viewer.scene.pickPosition(movement.position);
const cartographic = Cesium.Cartographic.fromCartesian(pickedPosition);
const point = [Cesium.Math.toDegrees(cartographic.longitude),Cesium.Math.toDegrees(cartographic.latitude)]
if (currentStep === 'start' ) {
startCoords = point;
startPoint.position = pickedPosition;
viewer.dataSources.removeAll();
endPoint.position = null ;
endCoords = null ;
currentStep = 'end' ;
}
else {
endCoords = point;
endPoint.position = pickedPosition;
currentStep = 'start' ;
}
if (startCoords && endCoords) {
getRoute(startCoords,endCoords);
}
}
viewer.screenSpaceEventHandler.setInputAction(onLeftClick,Cesium.ScreenSpaceEventType.LEFT_CLICK);
Run the app In CodePen , run your code to display the map.
When the application loads, you should be able to click on two different locations to create an origin point and a destination. The routing service should then calculate a driving route between them.
What's next? Learn how to use additional ArcGIS location services in these tutorials:
