LineCallout3D

AMD: require(["esri/symbols/callouts/LineCallout3D"], (LineCallout3D) => { /* code goes here */ });
ESM: import LineCallout3D from "@arcgis/core/symbols/callouts/LineCallout3D.js";
Class: esri/symbols/callouts/LineCallout3D
Inheritance: LineCallout3DCallout3DAccessor
Since: ArcGIS Maps SDK for JavaScript 4.4

This type of callout displays a line to connect a symbol or a label with its actual location in the scene. For example when displaying points of interest in a city, visualizing them with a callout line helps to understand where the points are actually located:

symbol3D-line-callout

This visualization can be created on a PointSymbol3D or a LabelSymbol3D. After defining the symbolLayers, an offset should be defined by setting the verticalOffset property. The symbols are now shifted vertically, but we still need to add the callout, otherwise it can be very confusing to understand where the points are located:

symbol3D-line-callout

Setting the callout property of type line on the symbol will create the line that connects the symbol with its actual position:

symbol3D-line-callout

See also
Example
let symbol = {
  type: "point-3d",  // autocasts as new PointSymbol3D()
  symbolLayers: [{
    type: "icon",  // autocasts as new IconSymbol3DLayer()
    resource: {
      href: "CityHall.svg"
    },
    size: 20
  }],
  verticalOffset: {
    screenLength: 40,
    maxWorldLength: 100,
    minWorldLength: 20
  },
  callout: {
    type: "line", // autocasts as new LineCallout3D()
    size: 1.5,
    color: "white",
    border: {
      color: "black"
    }
  }
});

Constructors

LineCallout3D

Constructor
new LineCallout3D(properties)
Parameter
properties Object
optional

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

Property Overview

Any properties can be set, retrieved or listened to. See the Working with Properties topic.
Show inherited properties Hide inherited properties
Name Type Summary Class

The border settings of the callout line.

LineCallout3D

The color of the callout line.

LineCallout3D

The name of the class.

Accessor

The width of the callout line in points.

LineCallout3D
For LineCallout3D the type is always "line". LineCallout3D

Property Details

border

Property
border Accessorautocast

The border settings of the callout line. The border of the callout line can be used to improve the contrast of the callout line color against various background colors. If the border is null, then no border will be visible.

Property
optional
Default Value:white
Autocasts from Object|Number[]|String

The color of the callout line border. This can be autocast with an array of rgb(a) values, named string, hex string or an hsl(a) string, an object with r, g, b, and a properties, or a Color object.

color

Property
color Colorautocast
Autocasts from Object|Number[]|String

The color of the callout line. This can be autocast with an array of rgb(a) values, named string, hex string or an hsl(a) string, an object with r, g, b, and a properties, or a Color object.

Default Value:"black"

declaredClass

Inherited
Property
declaredClass Stringreadonly
Inherited from Accessor
Since: ArcGIS Maps SDK for JavaScript 4.7 Accessor since 4.0, declaredClass added at 4.7.

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

size

Property
size Numberautocast
Autocasts from Number|String

The width of the callout line in points. This value may be autocast with a string expressing size in points or pixels (e.g. 12px).

Default Value:1px

type

Property
type String

For LineCallout3D the type is always "line".

Method Overview

Show inherited methods Hide inherited methods
Name Return Type Summary Class

Adds one or more handles which are to be tied to the lifecycle of the object.

Accessor

Creates a deep clone of the callout.

LineCallout3D
*

Creates a new instance of this class and initializes it with values from a JSON object generated from an ArcGIS product.

Callout3D

Returns true if a named group of handles exist.

Accessor

Removes a group of handles owned by the object.

Accessor

Converts an instance of this class to its ArcGIS portal JSON representation.

Callout3D

Method Details

addHandles

Inherited
Method
addHandles(handleOrHandles, groupKey)
Inherited from Accessor
Since: ArcGIS Maps SDK for JavaScript 4.25 Accessor since 4.0, addHandles added at 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.

clone

Method
clone(){LineCallout3D}

Creates a deep clone of the callout.

Returns
Type Description
LineCallout3D A deep clone of the object that invoked this method.

fromJSON

Inherited
Method
fromJSON(json){*}static

Creates a new instance of this class and initializes it with values from a JSON object generated from an ArcGIS product. The object passed into the input json parameter often comes from a response to a query operation in the REST API or a toJSON() method from another ArcGIS product. See the Using fromJSON() topic in the Guide for details and examples of when and how to use this function.

Parameter
json Object

A JSON representation of the instance in the ArcGIS format. See the ArcGIS REST API documentation for examples of the structure of various input JSON objects.

Returns
Type Description
* Returns a new instance of this class.

hasHandles

Inherited
Method
hasHandles(groupKey){Boolean}
Inherited from Accessor
Since: ArcGIS Maps SDK for JavaScript 4.25 Accessor since 4.0, hasHandles added at 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");
}

removeHandles

Inherited
Method
removeHandles(groupKey)
Inherited from Accessor
Since: ArcGIS Maps SDK for JavaScript 4.25 Accessor since 4.0, removeHandles added at 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");

toJSON

Inherited
Method
toJSON(){Object}
Inherited from Callout3D

Converts an instance of this class to its ArcGIS portal JSON representation. See the Using fromJSON() guide topic for more information.

Returns
Type Description
Object The ArcGIS portal JSON representation of an instance of this class.

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