SceneView

• Overview
• Using the view
• SceneView navigation
• SceneView navigation with gamepad and 3DConnexion devices
• Programmatic navigation
• Viewing modes
• Supported Coordinate Systems
• Using elevation data
• Handling events

Overview

A SceneView displays a 3D view of a Map or WebScene instance. To render a map and its layers in 2D, see the documentation for MapView. For a general overview of views, see View.

For a map to be visible to the user in the DOM, a SceneView must have both a valid Map instance and a DOM element with a non-zero height and width in which to render. Note that there must be valid data in the map, such as operational layers or a basemap with base layers, before the view will begin rendering the map.

// Create a basic SceneView instance with a basemap and world elevation
const view = new SceneView({
  // An instance of Map or WebScene
  map: new Map({
    basemap: "hybrid"
  }),

  // The id of a DOM element (may also be an actual DOM element)
  container: "viewDiv"
});

Using the view

A SceneView may not be immediately ready for display after it has been constructed. For example, map data may need to be loaded first to determine the spatialReference of the view, or the DOM container may not yet have a non-zero size. Many of the view methods (such as hitTest or goTo) need the view to be ready before they can be used.

// create a SceneView instance (for 3D viewing)
const view = new SceneView({
  map: new Map({
    basemap: "topo-vector"
  }),
  container: "viewDiv"
});

view.when(function() {
  // SceneView is now ready for display and can be used. Here we will
  // use goTo to view a particular location at a given zoom level, camera
  // heading and tilt.
  view.goTo({
    center: [-112, 38],
    zoom: 13,
    heading: 30,
    tilt: 60
  })
})
.catch(function(err) {
  // A rejected view indicates a fatal error making it unable to display,
  // this usually means that WebGL is not available, or too old.
  console.error("SceneView rejected:", err);
});

For live examples of view.when(), see the 2D overview map in SceneView and Toggle elevation layer samples.

SceneView navigation

The view can be navigated programmatically via goTo() and the view properties or interactively with mouse, keyboard or touch inputs. SceneView navigation is enabled by defaults, and includes the mouse, keyboard and touch interactions as described in the table below. Touch interactions are working on any touch enabled monitor or laptop screen.

Action	SceneView behavior
Drag	Pan
Double-click	Zoom in at the cursor
Scroll forward	Zoom in at the cursor
Scroll backward	Zoom out at the center of the view
Right-click+Drag	3D-rotate around the center of the view
Arrow Keys	Nudge the view left, right, up, or down (only supported in global scene)
B + Left-click+Drag	3D-rotate around the camera's position
P	Move the camera to look perpendicular to the data displayed in the view
N	Adjust the SceneView to point north
W	Tilt camera up
A	Rotate camera counterclockwise
S	Tilt camera down
D	Rotate camera clockwise
J	Move down, closer to the view (only supported in global scene)
U	Move up, higher from the view (only supported in global scene)
Drag with one or multiple fingers	Pan
Double-tap with one finger	Zoom in at the finger position
Two finger pinch in/out	Zoom out/in
Move two fingers in clockwise or counterclockwise direction	Rotate
Drag two fingers up or down the screen	Tilt the scene

To disable SceneView navigation, you must call the stopPropagation() method on the event objects of the pointer or gesture events that trigger the navigation.

See our samples on disabling view navigation for examples.

SceneView navigation with Gamepad and 3DConnexion devices

Gamepad and 3Dconnexion devices, like the SpaceMouse, can be used for navigation when view.navigation.gamepad.enabled is set to true(default). Please see GamepadInputDevice for supported devices.

Gamepad Action	SceneView behavior
Left Trigger	Descend
Right Trigger	Ascend
Left Stick	Pan
Right Stick	3D-rotate around the center of the view

Action Image	SpaceMouse Action	SceneView behavior
	Push (left/right/forward/backward)	Pan
	Pull up	Ascend
	Push down	Descend
	Rotate clockwise	Rotate the view clockwise
	Rotate counterclockwise	Rotate the view counterclockwise
	Tilt	Tilt the scene

To disable gamepad navigation, you can set view.navigation.gamepad.enabled to false.

Note:

• Per W3C Working Draft 29 October 2020, gamepad functionality may not be available on some or all browsers if the web application is hosted on a non-secure context (e.g. http rather than https). Future versions of the ArcGIS Maps SDK for JavaScript may explicitly disable gamepad capabilities on non-secure contexts.

Programmatic navigation

Traditional 2D mapping properties, such as scale, zoom, center and extent do not always work well in 3D. For example, a map's scale is not clear when viewed in the context of a globe. The SceneView therefore supports these properties on a best effort basis, with certain limitations (see the documentation of individual properties for more information).

// Compatibility with 2D viewing properties, such as center and zoom, allows
// convenient transitioning from the familiar use of the 2D MapView to the
// use of the SceneView for 3D viewing.
let view = new SceneView({
  map: new Map({
    basemap: "satellite"
  }),

  container: "viewDiv",

  // Sets the center point of the view at a specified lon/lat
  center: [-112, 38],

  // Sets the zoom LOD to 13
  zoom: 13
});

The nature of 3D viewing includes oblique views, z-values, and rotation, all of which add complexity to defining what is visible in the view. In contrast to 2D MapView, which are primarily defined by an extent, or center and scale, the primary view specification of the SceneView is a Camera instance. The camera is defined by a 3D position, heading and tilt. See the documentation of Camera for more details.

Because some view properties overlap (e.g. center and camera), there is a set priority in which these properties are applied during construction of the view (until the view becomes ready). The following table describes which properties have priority during view construction (properties that are overridden will have no effect during construction).

Property	Overrides
camera	viewpoint, extent, center, scale, zoom
viewpoint	extent, center, scale, zoom
extent	center, scale, zoom
scale	zoom

It can be difficult to define the camera for viewing data at a particular location. The goTo method provides a convenient way to set the view's camera based on data (geometries, graphics) you want to view and from any perspective using heading, tilt, scale or zoom. Additionally, goTo will provide a smooth transition to the new location of the view by default.

// go to a location specified in geographic coordinates,
// from a 45 degree angle.
view.goTo({
  center: [-112, 38],
  heading: 45
});

// go to view all the graphics in view.graphics, while northing the
// the camera and tilting it to 60 degrees
view.goTo({
  target: view.graphics,
  heading: 0,
  tilt: 60
});

// Set the view to show an extent at a -20 degree heading, disabling the
// animated transition
view.goTo({
  target: new Extent(694942, 5596444, 1284090, 6163926, SpatialReference.WebMercator),
  heading: -20
}, {
  animate: false
});

Viewing modes

The SceneView supports two different viewing modes, global (left picture above) and local (right picture above), specified by the viewingMode property. Global scenes render the earth as a globe, while local scenes render the surface on a flat plane. Local mode allows for navigation and feature display in a localized or clipped area. In both viewing modes the users may navigate the camera below the ground surface by setting the Ground.navigationConstraint.type to none.

The viewing mode (if not explicitly set by the user) is determined based on the spatial reference of the view. If the spatial reference is either Web Mercator, WGS84, CGCS2000, Mars_2000_(Sphere), GCS_Mars_2000 or GCS_Moon_2000 then the viewingMode will default to global. For any other spatial reference the viewingMode will default to local.

Supported coordinate systems

The SceneView supports following coordinate systems in a global scene:

• WGS84, WebMercator and CGCS2000
• Support for Mars_2000_(Sphere), GCS_Mars_2000 and GCS_Moon_2000 is experimental (see Visualize data on Mars sample). Scenes with these coordinate systems have the following limitations:
  • No support for dynamic layers, vector tile layers and scene layers
  • Daylight is currently not displayed correctly
  • Unable to be saved to a portal item

In a local scene the following coordinate systems are supported:

• Any Projected Coordinate System
• WGS84 and CGCS2000

Noncached layers can be added to scenes with any spatial reference since they will be reprojected to the scene spatial reference. Scene layers with GCS WGS84 can also be added in scenes with Web Mercator spatial reference.

See spatialReference to learn how the spatial reference of a SceneView is derived.

Using elevation data

The SceneView will use elevation layers from the Map.ground as sources for elevation when rendering the ground surface. Similar to the basemap, the ground can be initialized with a well-known name, which creates it with a known set of elevation layers.

let view = new SceneView({
  map: new Map({
    basemap: "satellite",

    // A ground preset containing a single elevation layer, sourced from
    // https://elevation3d.arcgis.com/arcgis/rest/services/WorldElevation3D/Terrain3D/ImageServer
    ground: "world-elevation"
  },

  container: "viewDiv"
});

Local elevation layers can be added to the ground.layers to merge multiple elevation sources into a single surface. See 3D Map With Elevation Services for an example.

Handling events

When users interact with the SceneView, their actions trigger events that you can listen and respond to. For example, you can listen when a user moves the mouse over the map and display the coordinates at the mouse location. This is called a pointer-move event. See the SceneView events section for a list of all the events.

It is important to note that some events are dependent on each other and the timing of the user interaction can influence the type of event that gets triggered. For example, a single click triggers a series of events: pointer-down when the user presses the mouse button, pointer-up when they release the mouse button. An immediate-click event gets triggered right after the pointer-up event. immediate-click should be used for responding to user interaction without delay. The click event is only triggered after making sure that the user doesn't click a second time (in which case it would trigger a double-click event).

In the case of a double-click, the same event chain is repeated after the first click. However, if the user clicks a second time within a close time range, then the click event is not emited anymore, but the pointer-down, pointer-up and immediate-click events are triggered again. After two immediate-click events, a double-click event gets triggered along with an immediate-double-click event. The difference between the two is that an immediate-double-click cannot be prevented by the use of stopPropagation on the immediate-click event and can therefore be used to react to double-clicking independently of usage of the immediate-click event.

These events are also used internally for navigation, popups or different interactive tools like measurement or sketch. In some use cases, adding additional event listeners might interfere with the default event listeners. For example, adding an immediate-click event to open up a popup, will interfere with the default click event that also opens up a popup.

See the Event explorer sample, to visualize the different events that get triggered when you interact with the view.

Known Limitations

• The number of features that can be rendered in a SceneView varies depending on the qualityProfile of the view and the complexity of each feature's geometry and symbol. Layers with a large number of features are dynamically loaded and displayed as you navigate the scene. For optimal performance, the number of displayed features is adjusted based on the complexity of the symbol and device capability. As a result, some features may not be visible in the view.

• SceneView does not support rendering of Multipoint geometry.

See also

• Intro to SceneView

• Sample - SceneLayer

• Sample - Create a local scene

• Sample - Easy navigation

• Sample - Elevation Info

• Sample - Toggle basemap elevation

• Sample - Custom background for SceneView

• Sample - Event explorer / watch properties

• Sample - Detect WebGL support

• Sample - Weather visualization

• MapView
• Map

Constructors

new SceneView(properties)

Parameter

properties Object optional See the properties for a list of all the properties that may be passed into the constructor.

Example

// Typical usage
let view = new SceneView({
  // ID of DOM element containing the view
  container: "viewDiv",
  // Map/WebScene object
  map: new Map()
});

Property Overview

Property Details

allLayerViews Collection<LayerView> inherited

Collection containing a flat list of all the created LayerViews related to the basemap, operational layers, and group layers in this view.

See also

• LayerView

alphaCompositingEnabled Boolean

Since: ArcGIS Maps SDK for JavaScript 4.8

Allows the view to be partially or fully transparent when composited with the webpage elements behind it.

This property can only be set once at construction time. When alpha compositing is enabled, web scenes are less performant. It is important to set this property to true only when you need to apply transparency on the view.

Default Value:false

Example

// create a view with a fully transparent background
let view = new SceneView({
 map: map,
 alphaCompositingEnabled: true,
 environment: {
   background: {
     type: "color",
     color: [0, 0, 0, 0]
   },
   starsEnabled: false,
   atmosphereEnabled: false
 }
})

analyses Collection<(DimensionAnalysis|DirectLineMeasurementAnalysis|AreaMeasurementAnalysis|SliceAnalysis|LineOfSightAnalysis)>

Allows for adding analyses directly to the default analyses in the View.

Examples

// Adds an analysis to the View
view.analyses.add(lineOfSightAnalysis);

// Removes an analysis from the View
view.analyses.remove(lineOfSightAnalysis);

animation ViewAnimationreadonly

Represents an ongoing view animation initialized by goTo(). You may watch this property to be notified of animation state changes.

See also

• goTo()

Example

view.goTo(target, { speedFactor: 0.1 });
view.animation.watch("state", function(state) {
 switch (state) {
   case "finished":
     console.log("Animation finished.");
     break;
   case "stopped":
     console.log("Animation stopped.");
     break;
 }
});

basemapView BasemapView inherited

Represents the view for a single basemap after it has been added to the map.

breakpoints Object

A convenience property used for defining the breakpoints on the height and width of the view. The sizes specified here determine the values of the widthBreakpoint and heightBreakpoint properties depending on the view's size.

Setting up breakpoints can aid in responsive app design. It does this by watching width and height breakpoints. This is helpful as it removes the need for multiple @media calls. Instead of listening for the view's size and/or resizes property, you can set up a watch handler for either the widthBreakpoint or heightBreakpoint properties of the view.

Please refer to the styling guide for additional information on working with this.

Properties

xsmall Number optional Default Value:544 Sets the xsmall breakpoint in pixels used by widthBreakpoint and heightBreakpoint. If the view's height or width is smaller than this value, then the value of widthBreakpoint or heightBreakpoint will be xsmall.

small Number optional Default Value:768 Sets the small breakpoint in pixels used by widthBreakpoint and heightBreakpoint. If the view's height or width is between this value and the value of the xsmall property, then the value of widthBreakpoint or heightBreakpoint will be small.

medium Number optional Default Value:992 Sets the medium breakpoint in pixels used by widthBreakpoint and heightBreakpoint. If the view's height or width is between this value and the value of the small property, then the value of widthBreakpoint or heightBreakpoint will be medium.

large Number optional Default Value:1200 Sets the large breakpoint in pixels used by widthBreakpoint and heightBreakpoint. If the view's height or width is between this value and the value of the medium property, then the value of widthBreakpoint or heightBreakpoint will be large.

xlarge Number optional Sets the xlarge breakpoint in pixels used by widthBreakpoint and heightBreakpoint. If the view's height or width is greater than the value of the large property, then the value of widthBreakpoint or heightBreakpoint will be xlarge.

See also

• Sample: Responsive apps using CSS

• MDN Web docs: Media Queries

Example

// Instead of watching the size or resizing properties
view.watch(size)
view.watch(resizing)

// Set up a watch handle for breakpoint
view.watch("widthBreakpoint",function(breakpoint){
  switch (breakpoint) {
    case "xsmall":
    // do something
      break;
    case "small":
    case "medium":
    case "large":
    case "xlarge":
    // do something else
      break;
    default:
  }
});

camera Cameraautocast

The observation point from which the visible portion (or perspective) of the SceneView is determined. Contains properties including the elevation, tilt, and heading (in degrees) of the current view. Setting the camera immediately changes the current view. For animating the view, see goTo().

When set in the constructor, this property overrides the viewpoint, extent, center, scale, and zoom properties.

The camera property contains an internal reference which may be modified in the future. To persist or modify the camera, create a clone using camera.clone().

Z-values defined in a geographic or metric coordinate system are expressed in meters. However, in local scenes that use a projected coordinate system, vertical units are assumed to be the same as the horizontal units specified by the service.

See also

• goTo()

Examples

// Initializes the view at the given (x, y, z) position with a heading of 95 degrees.
// The position of the camera is a Point which will autocast in the sample
// below. Note that the default Point spatial reference is WGS84 which
// will only work if the SceneView has a Web Mercator or WGS84 spatial
// reference. For other spatial references, create a new position Point
// with an explicit spatial reference.
const view = new SceneView({
  camera: {
    position: [
       -122, // lon
         38, // lat
      50000  // elevation in meters
    ],

    heading: 95
  }
});

// Initializes the view at the given position with a tilt of 65 degrees
const view = new SceneView({
  camera: {
    position: {
      x: -100, // lon
      y: 45,   // lat
      z: 10654 // elevation in meters
    },

    tilt: 65
  }
});

// Clone the camera to modify its properties
const camera = view.camera.clone();

// Set new values for heading and tilt
camera.heading = 180;
camera.tilt = 45;

// Set the new properties on the view's camera
view.camera = camera;

// Set the view's camera to a new position, heading and tilt with the goTo() method
view.goTo({
  target: [-122, 38, 50000],
  heading: 180,
  tilt: 45
});

center Pointautocast

Autocasts from Number[]|Object

Represents the view's center point; when setting the center you may pass a Point instance or an array of numbers representing at longitude/latitude pair ([-100.4593, 36.9014]). Setting the center immediately changes the current view. For animating the view, see goTo().

If set in the constructor, this property will be ignored if the viewpoint, camera, or extent properties are also set in the constructor.

The center property contains an internal reference which may be modified in the future. To persist or modify the center, create a clone using center.clone().

Z-values defined in a geographic or metric coordinate system are expressed in meters. However, in local scenes that use a projected coordinate system, vertical units are assumed to be the same as the horizontal units specified by the service.

See also

• goTo()

Examples

// Sets the initial center point of the view to long/lat coordinates
let view = new SceneView({
  center: [-112, 38]
});

// Updates the view's center point to a pre-determined Point object
view.center = new Point({
  x: 12804.24,
  y: -1894032.09,
  z: 12000,

  spatialReference: 2027
});

// view.center needs to be set (not modified in place) to have an effect.
// To modify only the center.x, first clone the current center, modify
// the .x property and then set it on the view.
let center = view.center.clone();

// Offset the center 1km to the east
center.x += 1000;

view.center = center;

clippingArea Extentautocast

Represents an optional clipping area used to define the visible extent of a local scene. The clipping area cannot have z-values.

If defined, only features that intersect the area will be displayed. The clipping area applies to all layers types, including the ground and the basemap. The clipping area will not increase the area beyond the union of the extents of all layers, including the ground and the basemap. To do so, add a GraphicsLayer with a custom fullExtent to the scene.

The clippingArea property only applies to local scenes.

The clippingArea property contains an internal reference which may be modified in the future. To persist or modify the clippingArea, create a clone using clippingArea.clone().

See also

• viewingMode

• Sample - Create a local scene

Example

let extent = view.extent.clone();

// Expand the extent in place, reducing it to 50% of its original size and set it as the clippingArea
view.clippingArea = extent.expand(0.5);

constraints Accessorautocast

Specifies constraints for Camera tilt and altitude that may be applied to the SceneView. See the object specification table below for details.

Properties

altitude Accessor optional Specifies a constraint on the minimum and maximum allowed camera altitude. Known Limitations The altitude constraint is only supported in scenes with global viewingMode. Specification min Number optional Default Value:-∞ The minimum allowed camera altitude (in meters). max Number optional Default Value:EARTH_RADIUS * 4 The maximum allowed camera altitude (in meters).

clipDistance Accessor optional Specifies the near and far webgl clip distances. Specification near Number optional The near clip distance. far Number optional The far clip distance. mode String optional Default Value:auto Specifies the mode of the constraint which is either auto or manual. In auto mode, the near and far clip distance values are automatically determined. In manual mode, the near and far clip distance values are user defined, constant values. Note that the mode automatically changes to manual whenever the near or far property is set. Possible Values:"auto"|"manual"

tilt Accessor optional Specifies a constraint on the amount of allowed tilting of the view. Specification max Number optional Specifies the maximum amount of tilt (in degrees) allowed in the view and may range from 0.5 to 179.5 degrees. mode String optional Default Value:auto Specifies the mode of the constraint. There are two possible values: auto or manual. In auto mode, the maximum tilt value is automatically determined based on the altitude of the view camera. In manual mode, the maximum tilt value is a user defined, constant value. Note: The mode automatically changes to manual whenever the max property is set. Possible Values:"auto"|"manual"

See also

• Sample - Custom background for SceneView (altitude)

container HTMLDivElementautocast inherited

Autocasts from String

The id or node representing the DOM element containing the view. This is typically set in the view's constructor.

Examples

// Sets container to the DOM id
let view = new MapView({
  container: "viewDiv"  // ID of the HTML element that holds the view
});

// Sets container to the node
let viewNode = document.getElementById("viewDiv");
let view = new SceneView({
  container: viewNode
});

declaredClass Stringreadonly inherited

Since: ArcGIS Maps SDK for JavaScript 4.7

The name of the class. The declared class name is formatted as esri.folder.className.

environment Accessor

Specifies various properties of the environment's visualization in the view. The SceneView will redraw automatically when any property of environment changes.

Modifying the lighting:

let view = new SceneView({
  map: map,
  container: "viewDiv"
});

// Set the light source position to reflect the current sun position at that time
view.environment.lighting = {
  type: "sun",
  date: new Date("January 1, 2022 12:00:00 UTC")
};

// Change the lighting to virtual, so that everying in the scene is nicely lit:
view.environment.lighting = {
  type: "virtual"
};

// Enable displaying shadows cast by the light source
view.environment.lighting.directShadowsEnabled = true;

Setting the background:

// Set a background color
let view = new SceneView({
  container: "viewDiv",
  map: map,
  environment: {
    background: {
      type: "color",
      color: [255, 252, 244, 1]
    },
    starsEnabled: false,
    atmosphereEnabled: false
  }
});

Changing the weather in the scene:

let view = new SceneView({
  container: "viewDiv",

  map: new Map({
    basemap: "satellite",
    ground: "world-elevation"
  }),
  environment: {
    weather: {
      type: "cloudy"   // autocasts as new CloudyWeather()
    }
  }
});

Properties

background Background optional Specifies how the background of the scene (which lies behind sky, stars and atmosphere) should be displayed. By default this is simply a single, fully opaque, black color. Currently ColorBackground is the only type of background supported.

lighting SunLighting|VirtualLighting optional Default Value:SunLighting Indicates the type of lighting in the scene. Known Value Example SunLighting VirtualLighting

atmosphereEnabled Boolean optional Default Value:true Indicates whether atmosphere visualization is enabled.

atmosphere Accessor optional Atmosphere conditions of the scene. Specification quality String optional Default Value:low Indicates the quality of the atmosphere visualization. The quality of the atmosphere may have a significant impact on performance. This setting does not have any effect in local scenes. Known Value Example low high Possible Values:"low"|"high"

weather SunnyWeather|CloudyWeather|RainyWeather|SnowyWeather|FoggyWeather optional Default Value:SunnyWeather Indicates the type of weather visualization in the scene. This setting does not have any effect in local scenes. Known Value Example SunnyWeather CloudyWeather RainyWeather SnowyWeather FoggyWeather

starsEnabled Boolean optional Default Value:true Indicates whether stars visualization is enabled.

extent Extentautocast

The extent represents the visible portion of a map within the view as an instance of Extent. Setting the extent immediately changes the view without animation. To animate the view, see goTo().

Rather than using extent to change the visible portion of the map in a SceneView, you should use camera since it easily allows you to define the heading, elevation and tilt of the observation point from which the view's perspective is created.

When set in the constructor, this property overrides the center, scale, and zoom properties. This property will be ignored if the viewpoint or camera are also set in the constructor.

The extent property contains an internal reference which may be modified in the future. To persist or modify the extent, create a clone using extent.clone().

Z-values defined in a geographic or metric coordinate system are expressed in meters. However, in local scenes that use a projected coordinate system, vertical units are assumed to be the same as the horizontal units specified by the service.

Default Value:null

See also

• camera
• goTo()

fatalError Error inherited

Since: ArcGIS Maps SDK for JavaScript 4.12

A fatal error returned when the view loses its WebGL context. Watch this property to properly handle the error and attempt to recover the WebGL context.

See also

• tryFatalErrorRecovery()

Example

view.watch("fatalError", function(error) {
  if(error) {
    console.error("Fatal Error! View has lost its WebGL context. Attempting to recover...");
    view.tryFatalErrorRecovery();
  }
});

floors Collection<string>

Since: ArcGIS Maps SDK for JavaScript 4.19

Applies a display filter on the view for a specific set of floor levels. It can filter the scene display on floor-aware layers by zero or more level IDs.

focused Booleanreadonly inherited

Since: ArcGIS Maps SDK for JavaScript 4.7

Indicates if the browser focus is on the view.

graphics Collection<Graphic> inherited

Allows for adding graphics directly to the default graphics in the View.

See also

• Graphic
• GraphicsLayer

• Intro to graphics

Examples

// Adds a graphic to the View
view.graphics.add(pointGraphic);

// Removes a graphic from the View
view.graphics.remove(pointGraphic);

groundView GroundViewreadonly

Since: ArcGIS Maps SDK for JavaScript 4.7

The view for the ground of the map.

height Numberreadonly inherited

The height of the view in pixels read from the view container element.

The view container needs to have a height greater than 0 to be displayed.

Default Value:0

heightBreakpoint String

A convenience property indicating the general size of the view's height. This value is determined based on where the view's height falls in the ranges defined in the breakpoints property. See the table below for a list of possible values. Use the breakpoints property to override the default thresholds.

Please refer to the styling guide for additional information on working with this.

Possible Value	Description	Default thresholds (pixels)
xsmall	The height of the view is smaller than the value set in the xsmall breakpoint.	< 545
small	The height of the view is between the values set in the xsmall and small breakpoints.	545 - 768
medium	The height of the view is between the values set in the small and medium breakpoints.	769 - 992
large	The height of the view is between the values set in the medium and large breakpoints.	993 - 1200
xlarge	The height of the view is larger than the value set in the large breakpoint.	> 1200

Possible Values:"xsmall"|"small"|"medium"|"large"|"xlarge"

See also

• Sample: Responsive widgets

• Sample: Responsive apps using CSS

Example

view.watch("heightBreakpoint", function(newVal){
  if (newVal === "xsmall"){
    // clear the view's default UI components if
    // app is used on a mobile device
    view.ui.components = [];
  }
});

highlightOptions HighlightOptions

Since: ArcGIS Maps SDK for JavaScript 4.4

Options for configuring the highlight. Use the highlight method on the appropriate LayerView to highlight a feature. With version 4.19, highlighting a feature influences the shadow of the feature as well. By default, the shadow of the highlighted feature is displayed in a darker shade.

See also

• highlight()

• Sample: Highlight SceneLayer

• Sample: Highlight point features

Example

const view = new SceneView({
  map: map,
  highlightOptions: {
    color: [255, 255, 0, 1],
    haloColor: "white",
    haloOpacity: 0.9,
    fillOpacity: 0.2,
    shadowColor: "black",
    shadowOpacity: 0.5
  }
});

input Inputreadonly inherited

Since: ArcGIS Maps SDK for JavaScript 4.9

Options to configure input handling of the View.

Example

// Make gamepad events to emit independently of focus.
view.input.gamepad.enabledFocusMode = "none";

interacting Booleanreadonly inherited

Indication whether the view is being interacted with (for example when panning or by an interactive tool).

Default Value:false

layerViews Collection<LayerView> inherited

A collection containing a hierarchical list of all the created LayerViews of the operational layers in the map.

See also

• LayerView

magnifier Magnifierreadonly inherited

Since: ArcGIS Maps SDK for JavaScript 4.19

The magnifier allows for showing a portion of the view as a magnifier image on top of the view.

map Mapautocast inherited

An instance of a Map object to display in the view. A view may only display one map at a time. On the other hand, one Map may be viewed by multiple MapViews and/or SceneViews simultaneously.

This property is typically set in the constructor of the MapView or SceneView. See the class description for examples demonstrating the relationship between the map and the view.

navigating Booleanreadonly inherited

Indication whether the view is being navigated (for example when panning).

Default Value:false

navigation Navigation inherited

Since: ArcGIS Maps SDK for JavaScript 4.9

Options to configure the navigation behavior of the View.

Example

// Disable the gamepad usage, single touch panning, panning momentum and mouse wheel zooming.
const view = new MapView({
  container: "viewDiv",
  map: new Map({
    basemap: "satellite"
  }),
  center: [176.185, -37.643],
  zoom: 13,
  navigation: {
    gamepad: {
      enabled: false
    },
    browserTouchPanEnabled: false,
    momentumEnabled: false,
    mouseWheelZoomEnabled: false
  }
});

orientation Stringreadonly

A convenience property indicating the view's orientation. See the table below for a list of possible values.

Please refer to the styling guide for additional information on working with this.

Possible Value	Description
landscape	The width of the view is greater than its height.
portrait	The width of the view is equal to or smaller than its height.

Possible Values:"landscape"|"portrait"

padding Object inherited

Use the padding property to make the center, and extent, etc. work off a subsection of the full view. This is particularly useful when layering UI elements or semi-transparent content on top of portions of the view. See the view padding sample for an example of how this works.

Properties

left Number optional The left padding (in pixels).

top Number optional The top padding (in pixels).

right Number optional The right padding (in pixels).

bottom Number optional The bottom padding (in pixels).

Default Value:{left: 0, top: 0, right: 0, bottom: 0}

See also

• Sample - View padding

performanceInfo SceneViewPerformanceInforeadonly

Since: ArcGIS Maps SDK for JavaScript 4.15

This property contains performance information in a SceneView like global memory usage and additional details for layers about memory consumption and number of features.

This property is experimental and should be used for debugging purposes only. Its interface will change in future releases.

See also

• Sample - SceneView memory resources

popup Popupautocast inherited

A Popup object that displays general content or attributes from layers in the map.

The view has a default instance of Popup with predefined styles and a template for defining content. The content in this default instance may be modified directly in the popup's content or in a layer's PopupTemplate.

You may create a new Popup instance and set it to this property to customize the style, positioning, and content of the popup in favor of using the default popup instance on the view.

Examples

// This syntax prevents any popups from opening and removes them from the application
view.popup = null;

// This syntax disables the click event on the view
view.popup.autoOpenEnabled = false;

qualityProfile String

SceneView can draw scenes in three different quality modes: high, medium and low.

The low quality profile significantly increases performance on slower browsers and devices by reducing the memory limit to 200MB. The memory limit impacts the SceneLayer's levels of detail and the number of features that are displayed in a FeatureLayer. Furthermore, low quality profile impacts visual quality by reducing map resolution, influencing atmospheric effects and disabling anti-aliasing (edge smoothing).

The high and medium quality profiles differ in the maximum amount of memory which the view is allowed to use (750MB for medium quality and 1.5GB for high quality). A higher memory limit improves quality in complex web scenes with many layers, but can have a negative impact on drawing performance and stability.

Physically based rendering (PBR) materials are enabled on all 3D objects in a SceneView in "high" quality mode. However, if a GLTF model or a 3D Object SceneLayer has PBR settings defined on the material, then these will be rendered in all quality modes.

In "high" quality mode, on a HiDPI display, graphics are rendered at a higher resolution depending on the browser's devicePixelRatio property.

SceneView performance depends on the amount of data being displayed, the quality profile and the device type. SceneView can be used to inspect the memory consumption and the number of features that are displayed for a specfic scene. The SceneView memory resources sample shows how this property can be used.

The default value is based on the detected browser:

• low for mobile devices
• medium for any other browser

Possible Values:"low"|"medium"|"high"

Example

let view = new SceneView({
  qualityProfile: "high"
});

ready Booleanreadonly inherited

When true, this property indicates whether the view successfully satisfied all dependencies, signaling that the following conditions are met.

• The view has a map. If map is a WebMap or a WebScene, then the map or scene must be loaded.
• The view has a container with a size greater than 0.
• The view has a spatialReference, a center, and a scale. These also can be inferred by setting an extent.

When a view becomes ready it will resolve itself and invoke the callback defined in when() where code can execute on a working view. Subsequent changes to a view's readiness would typically be handled by watching view.ready and providing logic for cases where the map or container change.

Default Value:false

See also

• when()

resizing Booleanreadonly inherited

Indicates if the view is being resized.

Default Value:false

resolution Numberreadonly inherited

Since: ArcGIS Maps SDK for JavaScript 4.9

Represents the current value of one pixel in the unit of the view's spatialReference. The value of resolution is calculated by dividing the view's extent width by its width.

scale Number

Represents an approximation of the map scale at the center of the view. Setting the scale immediately changes the current view. For animating the view, see goTo().

When set in the constructor, this property overrides the zoom property. This property will be ignored if the viewpoint, camera, or extent properties are also set in the constructor.

See also

• goTo()

Example

// Set the approximate map scale at the center the view to 1:24,000
view.scale = 24000;

size Number[]readonly inherited

An array containing the width and height of the view in pixels, e.g. [width, height].

spatialReference SpatialReferenceautocast

The spatial reference of the view. This indicates the projected or geographic coordinate system used to locate geographic features in the map. In a SceneView the following coordinate systems are available.

The spatial reference can either be set explicitly or automatically derived from the following:

• If the map is a WebScene instance, the WebScene.initialViewProperties.spatialReference is used.
• Otherwise, the spatial reference is derived from the first layer that loads in this order:
  • map.basemap.baseLayer
  • map.layers
  • map.ground.layers

In case the spatial reference is determined from the map layers or the ground layers and they are in WGS84 or Web Mercator, the following rule also applies: the first layer that does not support server side reprojection (tiled layers) determines the spatial reference of the view and all the other layers are reprojected.

If no spatial reference can be derived, then the view does not resolve and the ready property is false.

Default Value:null

stationary Booleanreadonly inherited

Indication whether the view is animating, being navigated with or resizing.

suspended Booleanreadonly inherited

Indicates if the view is visible on the page. When true, the view is not visible and it stops rendering and updating data. Set to true when one of the following conditions are met:

• if the view does not have a container,
• if the view's height or width equal to 0,
• if the view container's css style display is set to none (display:none).

When the view container's css style visibility is set to hidden, this property is set to false, and the view is hidden but it stills renders and updates data.

Default Value:true

timeExtent TimeExtentautocast inherited

Since: ArcGIS Maps SDK for JavaScript 4.12

The view's time extent. Time-aware layers display their temporal data that falls within the view's time extent. Setting the view's time extent is similar to setting the spatial extent because once the time extent is set, the view updates automatically to conform to the change.

Default Value:null

Example

// Create a csv layer from an online spreadsheet.
let csvLayer = new CSVLayer({
  url: "http://test.com/daily-magazines-sold-in-new-york.csv",
  timeInfo: {
    startField: "SaleDate" // The csv field contains date information.
  }
});

// Create a mapview showing sales for the last week of March 2019 only.
let view = new MapView({
  map: map,
  container: "viewDiv",
  timeExtent: {
    start: new Date("2019, 2, 24"),
    end:   new Date("2019, 2, 31")
  }
});

type Stringreadonly

The type of the view.

For SceneView the type is always "3d".

ui DefaultUIautocast inherited

Exposes the default widgets available in the view and allows you to toggle them on and off. See DefaultUI for more details.

Examples

let toggle = new BasemapToggle({
  view: view,
  nextBasemap: "hybrid"
});
// Adds an instance of BasemapToggle widget to the
// top right of the view.
view.ui.add(toggle, "top-right");

// Moves the zoom and BasemapToggle widgets to the
// bottom left of the view.
view.ui.move([ "zoom", toggle ], "bottom-left");

// Removes all the widgets from the bottom left of the view
view.ui.empty("bottom-left");

// Removes the compass widget from the view
view.ui.remove("compass");

// Removes all default UI components, except Attribution.
// Passing an empty array will remove all components.
view.ui.components = [ "attribution" ];

updating Booleanreadonly inherited

Indicates whether the view is being updated by additional data requests to the network, or by processing received data.

Default Value:false

viewingMode String

The viewing mode (local or global). Global scenes render the earth as a sphere. Local scenes render the earth on a flat plane and allow for navigation and feature display in a localized or clipped area. Users may also navigate the camera of a local scene below the surface of a basemap.

Value	Example	Description
global		Global scenes allow the entire globe to render in the view, showing the curvature of the earth.
local		Local scenes render the earth on a flat surface. They can be constrained to only show a "local" area by setting the clippingArea property. Local scenes also allow for displaying and exploring data that would otherwise be hidden by the surface of the earth.

Depending on the viewing mode different supported coordinate systems are available.

Possible Values:"global"|"local"

Default Value:global

See also

• clippingArea

• Sample - Create a local scene

viewpoint Viewpointautocast

Represents the current view as a Viewpoint or point of observation on the view. In SceneViews, camera should be used in favor of viewpoint for watching or changing the point of view. Setting the viewpoint immediately changes the current view. For animating the view, see goTo().

When set in the constructor, this property overrides the extent, center, scale, and zoom properties. This property will be ignored if camera is also set in the constructor.

The viewpoint property contains an internal reference which may be modified in the future. To persist or modify the viewpoint, create a clone using viewpoint.clone().

See also

• goTo()

width Numberreadonly inherited

The width of the view in pixels read from the view container element.

The view container needs to have a width greater than 0 to be displayed.

Default Value:0

widthBreakpoint String

A convenience property indicating the general size of the view's width. This value is determined based on where the view's width falls in the ranges defined in the breakpoints property. See the table below for a list of possible values. Use the breakpoints property to override the default thresholds.

Please refer to the styling guide for additional information on working with this.

Possible Value	Description	Default thresholds (pixels)
xsmall	The width of the view is smaller than the value set in the xsmall breakpoint.	< 545
small	The width of the view is between the values set in the xsmall and small breakpoints.	545 - 768
medium	The width of the view is between the values set in the small and medium breakpoints.	769 - 992
large	The width of the view is between the values set in the medium and large breakpoints.	993 - 1200
xlarge	The width of the view is larger than the value set in the large breakpoint.	> 1200

Possible Values:"xsmall"|"small"|"medium"|"large"|"xlarge"

See also

• Sample: Responsive widgets

• Sample: Responsive apps using CSS

Example

view.watch("widthBreakpoint", function(newVal){
  if (newVal === "xsmall"){
    // clear the view's default UI components if
    // app is used on a mobile device
    view.ui.components = [];
  }
});

zoom Number

Represents the level of detail (LOD) at the center of the view. Setting the zoom immediately changes the current view. For animating the view, see goTo().

Setting this property in conjunction with center is a convenient way to set the initial extent of the view.

If set in the constructor, this property will be ignored if the viewpoint, camera, extent, or scale properties are also set in the constructor.

See also

• goTo()

Examples

view.zoom = 3;  // Sets the LOD to 3 (small map scale)
view.zoom = 18; // Sets the LOD to 18 (large map scale)

// Set the zoom level and center in the constructor
let view = new SceneView({
  zoom: 10,
  center: [-120, 34],
  map: map
});

Method Overview

Method Details

addHandles(handleOrHandles, groupKey)inherited

Since: ArcGIS Maps SDK for JavaScript 4.25

Adds one or more handles which are to be tied to the lifecycle of the object. The handles will be removed when the object is destroyed.

// Manually manage handles
const handle = reactiveUtils.when(
  () => !view.updating,
  () => {
    wkidSelect.disabled = false;
  },
  { once: true }
);

this.addHandles(handle);

// Destroy the object
this.destroy();

Parameters

handleOrHandles WatchHandle|WatchHandle[] Handles marked for removal once the object is destroyed.

groupKey * optional Key identifying the group to which the handles should be added. All the handles in the group can later be removed with Accessor.removeHandles(). If no key is provided the handles are added to a default group.

destroy()inherited

Since: ArcGIS Maps SDK for JavaScript 4.17

Destroys the view, and any associated resources, including its map, popup, and UI elements. These can no longer be used once the view has been destroyed. To prevent these components from being destroyed, remove them from the view before calling destroy().

// remove popup and legend from the view so that they are not destroyed
const popup = view.popup;
view.popup = null;
view.ui.remove(legend);

// unset map from the view so that it is not destroyed
const map = view.map;
view.map = null;

// destroy the view and any remaining associated resources
view.destroy();

See also

• Map.destroy()
• WebMap.destroy()
• WebScene.destroy()

emit(type, event){Boolean}inherited

Since: ArcGIS Maps SDK for JavaScript 4.5

Emits an event on the instance. This method should only be used when creating subclasses of this class.

Parameters

type String The name of the event.

event Object optional The event payload.

Returns

Type	Description
Boolean	true if a listener was notified

focus()inherited

Since: ArcGIS Maps SDK for JavaScript 4.5

Sets the focus on the view.

goTo(target, options){Promise}

Sets the view to a given target. The target parameter can be one of the following:

• [longitude, latitude] pair of coordinates
• Geometry (or array of Geometry[])
• Graphic (or array of Graphic[])
• Viewpoint
• Camera
• Object with a combination of target, center, scale, position, heading and tilt properties (with target being any of the types listed above). The center property is provided as a convenience to animate the SceneView.center and is the equivalent of specifying the target with the center Point. The target must be provided in the spatial reference of the view.

This function returns a promise which resolves as soon as the new view has been set to the target. If the transition is animated, then the ongoing animation can be obtained using SceneView.animation. If setting the view to the new target fails, the promise returned by the goTo() method rejects with an error. Use a catch statement, to handle the error:

view.goTo({
  center: [-126, 49]
})
.catch(function(error) {
  if (error.name != "AbortError") {
     console.error(error);
  }
});

If the given target is far away from the current camera position, then heading and tilt will be automatically set to their neutral values (facing north, looking top down). Tilt and heading can always be explicitly set to override this behavior.

Parameters

target GoToTarget3D The target location/viewpoint to go to. When using an object for target, use the properties defined in GoToTarget3D.

options GoToOptions3D optional View transition options. See the specification defined in GoToOptions3D for more information.

Returns

Type	Description
Promise	A promise that resolves when the view's extent updates to the extent defined in target.

See also

• Sample - SceneView goTo()

Examples

view.goTo({
  center: [-126, 49],
  heading: 180, // set the heading to point South
  tilt: view.camera.tilt, // maintain tilt value
});

// go to a location defined by a Camera object
let cam = new Camera({
  position: new Point({
    x: -100.23, // lon
    y: 65,      // lat
    z: 10000,   // elevation in meters
  }),

  heading: 180, // facing due south
  tilt: 45      // bird's eye view
});

view.goTo(cam);

// go to a point using center, zoom, tilt, and heading
view.goTo({
  center: [-126, 49],
  zoom: 13,
  tilt: 75,
  heading: 105
});

// goTo returns a Promise which resolves when the animation has finished.
// This promise may be chained to create a sequence of animations.
view.goTo(graphic1)
    .then(function() {
      return view.goTo(graphic2);
    })
    .then(function() {
      return view.goTo(graphic3);
    });

hasEventListener(type){Boolean}inherited

Indicates whether there is an event listener on the instance that matches the provided event name.

Parameter

type String The name of the event.

Returns

Type	Description
Boolean	Returns true if the class supports the input event.

hasHandles(groupKey){Boolean}inherited

Since: ArcGIS Maps SDK for JavaScript 4.25

Returns true if a named group of handles exist.

Parameter

groupKey * optional A group key.

Returns

Type	Description
Boolean	Returns true if a named group of handles exist.

Example

// Remove a named group of handles if they exist.
if (obj.hasHandles("watch-view-updates")) {
  obj.removeHandles("watch-view-updates");
}

hitTest(screenPoint, options){Promise<HitTestResult>}

Returns hit test results from each layer that intersects the specified screen coordinates. The results are organized as an array of objects containing different result types.

The following layer types will return all features if a hit is made on intersecting features: GraphicsLayer, FeatureLayer, SceneLayer, BuildingSceneLayer, PointCloudLayer, CSVLayer, StreamLayer, GeoJSONLayer, OGCFeatureLayer, and SceneView.graphics.

The MediaLayer hit test result contains all media elements if the hit is made on intersecting elements. The RouteLayer hit test result contains all route elements if the hit is made on intersecting elements.

The VoxelLayer hit test result contains information about the intersecting voxel if a hit is made.

If no options are specified, graphics that are behind the ground surface will not be returned unless the ground surface is semi-transparent. Otherwise, using the map.ground in the include and exclude options determines whether the ground surface prevents hit testing graphics that are under it.

If the graphics have non-draped IconSymbol3DLayer symbology, then only the first graphic will be returned from the hitTest.

Release specific changes:

• At version 4.24, HitTestResult returns an array of objects containing graphic, media element, and route.
• Starting with version 4.11, if a label intersects the specified screen coordinates then the result of the hitTest will contain the graphic associated with that label.

Parameters

Specification

screenPoint ScreenPoint|MouseEvent The screen coordinates (or native mouse event) of the click on the view.

options Object optional Intersection test options. By default the map.ground is excluded if its opacity is smaller than one. Specification include Array<(IntersectItem|Collection<IntersectItem>|Array<IntersectItem>|Ground)>|Collection<IntersectItem>|IntersectItem optional A list of layers and graphics to include for intersection testing. All layers and graphics will be included if include is not specified. exclude Array<(IntersectItem|Collection<IntersectItem>|Array<IntersectItem>|Ground)>|Collection<IntersectItem>|IntersectItem optional A list of layers and graphics to include for intersection testing. No layers or graphics will be excluded if exclude is not specified.

Returns

Type	Description
Promise<HitTestResult>	When resolved, returns an array of objects containing different result types.

See also

• Sample: Access features with click events

• Sample: SceneView - hitTest

Example

// Get the screen point from the view's click event
view.on("click", function(event) {
  // Search for graphics at the clicked location. View events can be used
  // as screen locations as they expose an x,y coordinate that conforms
  // to the ScreenPoint definition.
  view.hitTest(event).then(function(response) {
    let result = response.results[0];

    if (result?.type === "graphic") {
      let lon = result.mapPoint.longitude;
      let lat = result.mapPoint.latitude;

      console.log("Hit graphic at (" + lon + ", " + lat + ")", result.graphic);
    } else {
      console.log("Did not hit any graphic");
    }
  });
});

isFulfilled(){Boolean}inherited

isFulfilled() may be used to verify if creating an instance of the class is fulfilled (either resolved or rejected). If it is fulfilled, true will be returned.

Returns

Type	Description
Boolean	Indicates whether creating an instance of the class has been fulfilled (either resolved or rejected).

isRejected(){Boolean}inherited

isRejected() may be used to verify if creating an instance of the class is rejected. If it is rejected, true will be returned.

Returns

Type	Description
Boolean	Indicates whether creating an instance of the class has been rejected.

isResolved(){Boolean}inherited

isResolved() may be used to verify if creating an instance of the class is resolved. If it is resolved, true will be returned.

Returns

Type	Description
Boolean	Indicates whether creating an instance of the class has been resolved.

on(type, modifiersOrHandler, handler){Object}inherited

Registers an event handler on the instance. Call this method to hook an event with a listener. See the Events summary table for a list of listened events.

Parameters

type String|String[] The name of the event or events to listen for.

modifiersOrHandler String[]|Function Additional modifier keys to filter events. Please see Key Values for possible values. All the standard key values are supported. Alternatively, if no modifiers are required, the function will call when the event fires. The following events don't support modifier keys: blur, focus, layerview-create, layerview-destroy, resize.

handler Function optional The function to call when the event is fired, if modifiers were specified.

Returns

Type	Description
Object	Returns an event handler with a remove() method that can be called to stop listening for the event. Property Type Description remove Function When called, removes the listener from the event.

Example

view.on("click", function(event){
  // event is the event handle returned after the event fires.
  console.log(event.mapPoint);
});

// Fires `pointer-move` event when user clicks on "Shift"
// key and moves the pointer on the view.
view.on('pointer-move', ["Shift"], function(event){
  let point = view2d.toMap({x: event.x, y: event.y});
  bufferPoint(point);
});

removeHandles(groupKey)inherited

Since: ArcGIS Maps SDK for JavaScript 4.25

Removes a group of handles owned by the object.

Parameter

groupKey * optional A group key or an array or collection of group keys to remove.

Example

obj.removeHandles(); // removes handles from default group

obj.removeHandles("handle-group");
obj.removeHandles("other-handle-group");

takeScreenshot(options){Promise<Screenshot>}

Since: ArcGIS Maps SDK for JavaScript 4.9

Create a screenshot of the current view. Screenshots include only elements that are rendered on the canvas (all geographical elements), but excludes overlayed DOM elements (UI, popups, etc.). By default, a screenshot of the whole view is created. Different options allow for creating different types of screenshots, including taking screenshots at different aspect ratios, different resolutions and creating thumbnails.

Screenshots are always taken inside the padded area of the view (see padding).

Parameters

Specification

options Object optional Screenshot options. Specification format String optional Default Value: png The format of the resulting encoded data url. Possible Values:"jpg"|"png" quality Number optional Default Value: 98 The quality (0 to 100) of the encoded image when format is jpg. width Number optional The width of the screenshot (defaults to the area width). The height will be derived automatically if left unspecified, according to the aspect ratio of the of the screenshot area. height Number optional The height of the screenshot (defaults to the area height). The width will be derived automatically if left unspecified, according to the aspect ratio of the screenshot area. area Object optional Specifies whether to take a screenshot of a specific area of the view. The area coordinates are relative to the origin of the padded view (see padding) and will be clipped to the view size. Defaults to the whole view (padding excluded). Specification x Number optional The x coordinate of the area. y Number optional The y coordinate of the area. width Number optional The width of the area. height Number optional The height of the area. ignorePadding Boolean optional Indicates whether view padding should be ignored. Set this property to true to allow padded areas to be included in the screenshot.

Returns

Type	Description
Promise<Screenshot>	When resolved, returns an object containing an encoded dataUrl and raw image data.

See also

• Sample - Take a screenshot of a SceneView

Examples

// Take a screenshot at the same resolution of the current view
view.takeScreenshot().then(function(screenshot) {
  let imageElement = document.getElementById("screenshotImage");
  imageElement.src = screenshot.dataUrl;
});

// Create a square thumbnail from the current view
let options = {
  width: 200,
  height: 200
};

view.takeScreenshot(options).then(function(screenshot) {
  let imageElement = document.getElementById("screenshotImage");
  imageElement.src = screenshot.dataUrl;
});

// Take a high resolution, square screenshot
let options = {
  width: 2048,
  height: 2048
};

view.takeScreenshot(options).then(function(screenshot) {
  let imageElement = document.getElementById("screenshotImage");
  imageElement.src = screenshot.dataUrl;
});

// Take a screenshot of a small area at the center of the view

// Compute the size of the view excluding potential padding
let padding = view.padding;
let innerWidth = view.width - padding.left - padding.right;
let innerHeight = view.height - padding.top - padding.bottom;

// Desired size of the area
let width = 200;
let height = 200;

let options = {
  area: {
    x: (innerWidth - width) / 2,
    y: (innerHeight - height) / 2,
    width: width,
    height: height
  }
};

view.takeScreenshot(options).then(function(screenshot) {
  let imageElement = document.getElementById("screenshotImage");
  imageElement.src = screenshot.dataUrl;
});

// Takes a high-resolution screenshot for display on a HiDPI screen
// The pixelRatio indicates the display has 2x the pixel density of typical screens
let pixelRatio = 2;
view.takeScreenshot({ width: view.width * pixelRatio, height: view.height * pixelRatio });

// Takes a high-resolution screenshot for display on a HiDPI screen
// The pixelRatio is the resolution of the display capturing the image
let pixelRatio = window.devicePixelRatio;
view.takeScreenshot({ width: view.width * pixelRatio, height: view.height * pixelRatio });

toMap(screenPoint, options){Point}

Converts the given screen point to a map point.

Parameters

Specification

screenPoint ScreenPoint|MouseEvent The location on the screen (or native mouse event) to convert.

options Object optional Intersection test options. By default only the map.ground and any IntegratedMeshLayer are included. Specification include Array<(IntersectItem|Collection<IntersectItem>|Array<IntersectItem>|Ground)>|Collection<IntersectItem>|IntersectItem optional A list of layers and graphics to include for intersection testing. All layers and graphics will be included if include is not specified. exclude Array<(IntersectItem|Collection<IntersectItem>|Array<IntersectItem>|Ground)>|Collection<IntersectItem>|IntersectItem optional A list of layers and graphics to include for intersection testing. No layers or graphics will be excluded if exclude is not specified.

Returns

Type	Description
Point	The map point corresponding to the given screen point.

toScreen(point){ScreenPoint}

Converts the given map point to a screen point.

Parameter

point Point A point geometry.

Returns

Type	Description
ScreenPoint	The screen point corresponding to the given map point.

tryFatalErrorRecovery()inherited

Since: ArcGIS Maps SDK for JavaScript 4.12

Call this method to clear any fatal errors resulting from a lost WebGL context.

See also

• fatalError

Example

view.watch("fatalError", function(error) {
  if(error) {
    view.tryFatalErrorRecovery();
  }
});

when(callback, errback){Promise}inherited

Since: ArcGIS Maps SDK for JavaScript 4.6

when() may be leveraged once an instance of the class is created. This method takes two input parameters: a callback function and an errback function. The callback executes when the instance of the class loads. The errback executes if the instance of the class fails to load.

Parameters

callback Function optional The function to call when the promise resolves.

errback Function optional The function to execute when the promise fails.

Returns

Type	Description
Promise	Returns a new promise for the result of callback that may be used to chain additional functions.

Example

// Although this example uses MapView, any class instance that is a promise may use when() in the same way
let view = new MapView();
view.when(function(){
  // This function will execute once the promise is resolved
}, function(error){
  // This function will execute if the promise is rejected due to an error
});

whenAnalysisView(analysis){Promise<(AreaMeasurementAnalysisView3D|DimensionAnalysisView|DirectLineMeasurementAnalysisView3D|LineOfSightAnalysisView3D|SliceAnalysisView3D)>}

Gets the analysis view created for the given analysis object. The returned promise resolves when the view for the given analysis has been created, or rejects with an error (for example if the analysis is not part of analyses.

Parameter

analysis AreaMeasurementAnalysis|DimensionAnalysis|DirectLineMeasurementAnalysis|LineOfSightAnalysis|SliceAnalysis The analysis for which to obtain the analysis view.

Returns

Type	Description
Promise<(AreaMeasurementAnalysisView3D|DimensionAnalysisView|DirectLineMeasurementAnalysisView3D|LineOfSightAnalysisView3D|SliceAnalysisView3D)>	Resolves to an instance of the analysis view for the provided analysis.

Example

// Create a slice analysis
let analysis = new SliceAnalysis();

// add to the sceneview
view.analyses.add(analysis);

view.whenAnalysisView(analysis)
    .then(function(analysisView) {
      // The analysis view for the analysis
    })
    .catch(function(error) {
      // An error occurred during the analysis view creation
    });

whenLayerView(layer){Promise<LayerView>}inherited

Gets the LayerView created on the view for the given layer. The returned promise resolves when the layer view for the given layer has been created, or rejects with an error (for example if the layer is not part of the view, or if the layer type is not supported in this view).

Parameter

layer Layer The layer for which to obtain its LayerView.

Returns

Type	Description
Promise<LayerView>	Resolves to an instance of LayerView for the specified layer.

See also

• Sample - StreamLayer

Example

// Create a feature layer from a url pointing to a Feature Service
let layer = new FeatureLayer(url);

map.add(layer);

view.whenLayerView(layer)
    .then(function(layerView) {
      // The layerview for the layer
    })
    .catch(function(error) {
      // An error occurred during the layerview creation
    });

Type Definitions

EasingFunction(t, duration){Number}

User provided easing function. The function receives a normalized time between 0 and 1 as input and should provide a transformed normalized time between 0 and 1 as output.

Parameters

t Number The input time (from 0 to 1)

duration Number The total duration (in milliseconds) of the animation. This may be used for heuristics on deciding what type of easing to perform.

Returns

Type	Description
Number	a value between 0 and 1

Example

// Simple quadratic ease in function
function easeIn(t) {
  return t * t;
}

GoToOptions3D Object

Animation options for the goTo() method. See properties below for parameter specifications.

Properties

animate Boolean optional Default Value:true Indicates if the transition to the new view should be animated. If set to false, speedFactor, duration, maxDuration, and easing properties are ignored.

speedFactor Number optional Default Value:1 Increases or decreases the animation speed by the specified factor. A speedFactor of 2 will make the animation twice as fast, while a speedFactor of 0.5 will make the animation half as fast. Setting the speed factor will automatically adapt the default maxDuration accordingly.

duration Number optional Set the exact duration (in milliseconds) of the animation. Note that by default, animation duration is calculated based on the time required to reach the target at a constant speed. Setting duration overrides the speedFactor option. Note that the resulting duration is still limited to the maxDuration.

maxDuration Number optional Default Value:8000 The maximum allowed duration (in milliseconds) of the animation. The default maxDuration value takes the specified speedFactor into account.

easing String|EasingFunction optional The easing function to use for the animation. This may either be a preset (named) function, or a user specified function. Supported named presets are: linear, in-cubic, out-cubic, in-out-cubic, in-expo, out-expo, in-out-expo, in-out-coast-quadratic. See easing functions for graphical representations of these functions. By default, animations that are less than 1000 ms use the out-expo easing function; longer animations use the in-out-coast-quadratic easing function. Possible Values:"linear"|"in-cubic"|"out-cubic"|"in-out-cubic"|"in-expo"|"out-expo"|"in-out-expo"|"in-out-coast-quadratic"

signal AbortSignal optional An AbortSignal to abort the animation. If canceled, the promise will be rejected with an error named AbortError. See also AbortController.

GoToTarget3D Number[]|Geometry|Geometry[]|Collection<Geometry>|Graphic|Graphic[]|Collection<Graphic>|Camera|Viewpoint|Object

The target location/viewpoint to animate to in the goTo() method. A two or three-element array of numbers represents the [x,y,z] coordinates to center the view on. When using an object for the target, use the properties in the table below.

Properties

target Number[]|Geometry|Geometry[]|Collection<Geometry>|Graphic|Graphic[]|Collection<Graphic>|Viewpoint|Camera optional The target of the animation.

center Number[]|Point optional The SceneView.center to go to.

scale Number optional The SceneView.scale to go to.

zoom Number optional The final zoom value to go to.

heading Number optional The Camera.heading to go to.

tilt Number optional The Camera.tilt to go to.

position Point optional The Camera.position to go to.

GraphicHit Object

Since: ArcGIS Maps SDK for JavaScript 4.24

Object specification for the graphic hit result returned in HitTestResult of the hitTest() method. If the graphics have non-draped IconSymbol3DLayer symbology, then only the first graphic will be returned from the hitTest. See the table below for the specification of each property in this object.

Properties

type String The value is always "graphic".

graphic Graphic A graphic present in the view that intersects the input screen coordinates. Starting with version 4.11, if a label intersects the input screen coordinates the corresponding graphic is returned. If the graphic comes from a layer with an applied Renderer, then the symbol property will be empty. Other properties will be empty based on the context in which the graphic is fetched. Some layers do not have a graphic.geometry (for example: SceneLayer, PointCloudLayer and VoxelLayer). The graphic.attributes only includes attributes which are loaded by the client, for this reason it can be a subset of all attributes. FeatureLayer.outFields with ["*"] can be used to force all attributes to be present. The graphic.symbol exists only for graphics coming from GraphicsLayer or view.graphics but it is possible to compute the displayed symbology with getDisplayedSymbol.

distance Number The distance from the camera position to the point geometry hit on this graphic. In global scenes the distance will be in meters while in local scenes the distance will be in the unit of the spatial reference of the view.

layer Layer The layer that contains the feature/graphic.

mapPoint Point The point geometry in the spatial reference of the view corresponding with the input screen coordinates.

HitTestResult Object

Since: ArcGIS Maps SDK for JavaScript 4.24

Object specification for the result of the hitTest() method.

Properties

results ViewHit[] An array of result objects returned from the hitTest() when the location of the input screen coordinates intersect features in the view.

ground Object Ground intersection result. The ground hit result will always be returned, even if the ground was excluded from the hitTest. Specification mapPoint Point The point at which the ground was hit while performing the hitTest. This may be null when the ground was not hit at all (for example by clicking on the sky). distance Number The distance from camera position to the ground hit. The distance will be 0 if the ground was not hit at all. In global scenes the distance will be in meters while in local scenes the distance will be in the unit of the spatial reference of the view.

screenPoint ScreenPoint|MouseEvent The screen coordinates (or native mouse event) of the click on the view.

IntersectItem Graphic|Layer|BuildingSublayer

A layer or graphic to be used in toMap and hitTest filter options.

See also

• toMap

• hitTest

MediaHit Object

Since: ArcGIS Maps SDK for JavaScript 4.24

Object specification for the media hit results returned from MediaLayer in HitTestResult of the hitTest() method. See the table below for the specification of each property in this object.

Properties

type String The value is always "media".

element ImageElement|VideoElement An element representing a media element in MediaLayer.source that intersects the input screen coordinates.

distance Number The distance from the camera position to the point geometry hit on this graphic. In global scenes the distance will be in meters while in local scenes the distance will be in the unit of the spatial reference of the view.

layer MediaLayer The media layer that contains the element.

mapPoint Point The point geometry in the spatial reference of the view corresponding with the input screen coordinates.

RouteHit Object

Since: ArcGIS Maps SDK for JavaScript 4.24

Object specification for the route hit results returned from RouteLayer in HitTestResult of the hitTest() method. See the table below for the specification of each property in this object.

Properties

type String The value is always "route".

layer RouteLayer The route layer that contains the element.

mapPoint Point The point geometry in the spatial reference of the view corresponding with the input screen coordinates.

networkFeature DirectionLine|DirectionPoint|PointBarrier|PolygonBarrier|RouteInfo|Stop The route hit test will contain all intersecting network elements which, includes one of the following: DirectionLine, DirectionPoint, PointBarrier, PolylineBarrier, PolygonBarrier, Stop, or RouteInfo.

ScreenPoint

Since: ArcGIS Maps SDK for JavaScript 4.11

An object representing a point on the screen.

Properties

x Number The x coordinate.

y Number The y coordinate.

Screenshot

Since: ArcGIS Maps SDK for JavaScript 4.9

Object returned when takeScreenshot() promise resolves:

Properties

dataUrl String A data url representing the screenshot.

data ImageData The raw RGBA image data.

ViewHit GraphicHit|MediaHit|RouteHit

Since: ArcGIS Maps SDK for JavaScript 4.24

Object specification for the result returned in HitTestResult of the hitTest() method.

Event Overview

Event Details

blurinherited

Since: ArcGIS Maps SDK for JavaScript 4.7

Fires when browser focus is moved away from the view.

Properties

target View The view that the browser focus is moved away from.

native Object A standard DOM KeyboardEvent.

clickinherited

Fires after a user clicks on the view. This event emits slightly slower than an immediate-click event to make sure that a double-click event isn't triggered instead. The immediate-click event can be used for responding to a click event without delay.

Properties

mapPoint Point The point location of the click on the view in the spatial reference of the map.

x Number The horizontal screen coordinate of the click on the view.

y Number The vertical screen coordinate of the click on the view.

button Number Indicates which mouse button was clicked.

buttons Number Indicates the current mouse button state. Value Description 0 left click (or touch) 1 middle click 2 right click Possible Values:0|1|2

type String The event type. The value is always "click".

stopPropagation Function Prevents the event bubbling up the event chain.

timestamp Number Time stamp (in milliseconds) at which the event was emitted.

native Object A standard DOM PointerEvent.

See also

• Sample: Access features with click events

Examples

// Set up a click event handler and retrieve the screen point
view.on("click", function(event) {
 // the hitTest() checks to see if any graphics in the view
 // intersect the given screen x, y coordinates
 view.hitTest(event)
  .then(getGraphics);
});

view.on("click", function(event) {
 // you must overwrite default click-for-popup
 // behavior to display your own popup
 view.popup.autoOpenEnabled = false;

 // Get the coordinates of the click on the view
 let lat = Math.round(event.mapPoint.latitude * 1000) / 1000;
 let lon = Math.round(event.mapPoint.longitude * 1000) / 1000;

 view.popup.open({
   // Set the popup's title to the coordinates of the location
   title: "Reverse geocode: [" + lon + ", " + lat + "]",
   location: event.mapPoint // Set the location of the popup to the clicked location
   content: "This is a point of interest"  // content displayed in the popup
 });
});

double-clickinherited

Fires after double-clicking on the view.

Properties

mapPoint Point The point location of the click on the view in the spatial reference of the map.

x Number The horizontal screen coordinate of the click on the view.

y Number The vertical screen coordinate of the click on the view.

button Number Indicates which mouse button was clicked.

buttons Number Indicates the current mouse button state. Value Description 0 left click (or touch) 1 middle click 2 right click Possible Values:0|1|2

type String The event type. The value is always "double-click".

stopPropagation Function Prevents the event bubbling up the event chain.

timestamp Number Time stamp (in milliseconds) at which the event was emitted.

native Object A standard DOM PointerEvent.

Example

view.on("double-click", function(event) {
  // The event object contains the mapPoint and the screen coordinates of the location
  // that was clicked.
  console.log("screen point", event.x, event.y);
  console.log("map point", event.mapPoint);
});

draginherited

Fires during a pointer drag on the view.

Properties

action String Indicates the state of the drag. The two values added and removed indicate a change in the number of pointers involved. Possible Values:"start"|"added"|"update"|"removed"|"end"

x Number The horizontal screen coordinate of the pointer on the view.

y Number The vertical screen coordinate of the pointer on the view.

origin Object Screen coordinates of the start of the drag. Specification x Number The horizontal screen coordinate of the pointer on the view. y Number The vertical screen coordinate of the pointer on the view.

button Number Indicates which mouse button was clicked at the start of the drag. See MouseEvent.button. Value Description 0 left mouse button (or touch) 1 middle mouse button 2 right mouse button Possible Values:0|1|2

buttons Number Indicates which mouse buttons are pressed when the event is triggered. See MouseEvent.buttons.

type String The event type. The value is always "drag".

radius Number The radius of a sphere around the multiple pointers involved in this drag. Or 0 while only a single pointer is used.

angle Number Amount of rotation (in degrees) since the last event of type start.

stopPropagation Function Prevents the event bubbling up the event chain.

timestamp Number Time stamp (in milliseconds) at which the event was emitted.

native Object A standard DOM MouseEvent.

Example

view.on("drag", function(event){
 // Print out the current state of the
 // drag event.
 console.log("drag state", event.action);
});

focusinherited

Since: ArcGIS Maps SDK for JavaScript 4.7

Fires when browser focus is on the view.

Properties

target View The view that the browser focus is currently on.

native Object A standard DOM KeyboardEvent.

holdinherited

Fires after holding either a mouse button or a single finger on the view for a short amount of time.

Properties

mapPoint Point The point location of the click on the view in the spatial reference of the map.

x Number The horizontal screen coordinate of the hold on the view.

y Number The vertical screen coordinate of the hold on the view.

button Number Indicates which mouse button was held down. See MouseEvent.button. Value Description 0 left mouse button (or touch) 1 middle mouse button 2 right mouse button Possible Values:0|1|2

buttons Number Indicates which mouse buttons are pressed when the event is triggered. See MouseEvent.buttons.

type String The event type. The value is always "hold".

stopPropagation Function Prevents the event bubbling up the event chain.

timestamp Number Time stamp (in milliseconds) at which the event was emitted.

native Object A standard DOM PointerEvent.

Example

view.on("hold", function(event) {
  // The event object contains the mapPoint and the screen coordinates of the location
  // that was clicked.
  console.log("hold at screen point", event.x, event.y);
  console.log("hold at map point", event.mapPoint);
});

immediate-clickinherited

Since: ArcGIS Maps SDK for JavaScript 4.7

Fires right after a user clicks on the view. In contrast to the click event, the immediate-click event is emitted as soon as the user clicks on the view, and is not inhibited by a double-click event. This event is useful for interactive experiences that require feedback without delay.

Properties

mapPoint Point The point location of the click on the view in the spatial reference of the map.

x Number The horizontal screen coordinate of the click on the view.

y Number The vertical screen coordinate of the click on the view.

button Number Indicates which mouse button was clicked. See MouseEvent.button. Value Description 0 left click (or touch) 1 middle click 2 right click Possible Values:0|1|2

buttons Number Indicates which buttons are pressed when the event is triggered. See MouseEvent.buttons.

type String The event type. The value is always "immediate-click".

stopPropagation Function Prevents the event bubbling up the event chain. Inhibits the associated click and double-click events.

timestamp Number Time stamp (in milliseconds) at which the event was emitted.

native Object A standard DOM PointerEvent.

Example

// Set up an immediate-click event handler and retrieve the screen point
view.on("immediate-click", function(event) {
 // the hitTest() checks to see if any graphics in the view
 // intersect the given screen x, y coordinates
 view.hitTest(event)
  .then(getGraphics);
});

immediate-double-clickinherited

Since: ArcGIS Maps SDK for JavaScript 4.15

Is emitted after two consecutive immediate-click events. In contrast to double-click, an immediate-double-click cannot be prevented by use of stopPropagation on the immediate-click event and can therefore be used to react to double-clicking independently of usage of the immediate-click event.

Properties

mapPoint Point The point location of the click on the view in the spatial reference of the map.

x Number The horizontal screen coordinate of the click on the view.

y Number The vertical screen coordinate of the click on the view.

button Number Indicates which mouse button was clicked. See MouseEvent.button. Value Description 0 left click (or touch) 1 middle click 2 right click Possible Values:0|1|2

buttons Number Indicates which buttons are pressed when the event is triggered. See MouseEvent.buttons.

type String The event type. The value is always "immediate-double-click".

stopPropagation Function Prevents the event bubbling up the event chain.

timestamp Number Time stamp (in milliseconds) at which the event was emitted.

native Object A standard DOM PointerEvent.

key-downinherited

Fires after a keyboard key is pressed.

Properties

repeat Boolean Indicates whether this is the first event emitted due to the key press, or a repeat.

key String The key value that was pressed, according to the MDN full list of key values.

type String The event type. The value is always "key-down".

stopPropagation Function Prevents the event bubbling up the event chain.

timestamp Number Time stamp (in milliseconds) at which the event was emitted.

native Object A standard DOM KeyboardEvent.

Example

// Zoom in when user clicks on "a" button
// Zoom out when user clicks on "s" button
view.on("key-down", function(event){
 console.log("key-down", event);

 if (event.key === "a"){
   let zm = view.zoom + 1;

   view.goTo({
     target: view.center,
     zoom: zm
   });
 }
 else if(event.key == "s"){
   let zm = view.zoom - 1;

   view.goTo({
     target: view.center,
     zoom: zm
   });
 }
});

key-upinherited

Fires after a keyboard key is released.

Properties

type String The event type. The value is always "key-up".

key String The key value that was released, according to the MDN full list of key values.

stopPropagation Function Prevents the event bubbling up the event chain.

timestamp Number Time stamp (in milliseconds) at which the event was emitted.

native Object A standard DOM KeyboardEvent.

layerview-createinherited

Fires after each layer in the map has a corresponding LayerView created and rendered in the view.

Properties

layer Layer The layer in the map for which the layerView was created.

layerView LayerView The LayerView rendered in the view representing the layer in layer.

See also

• View.whenLayerView()

Example

// This function fires each time a layer view is created for a layer in
// the map of the view.
view.on("layerview-create", function(event) {
  // The event contains the layer and its layer view that has just been
  // created. Here we check for the creation of a layer view for a layer with
  // a specific id, and log the layer view
  if (event.layer.id === "satellite") {
    // The LayerView for the desired layer
    console.log(event.layerView);
  }
});