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Showing content from https://developers.arcgis.com/javascript/latest/api-reference/esri-geometry-Extent.html below:

Extent | API Reference | ArcGIS Maps SDK for JavaScript 4.33

ESM: import Extent from "@arcgis/core/geometry/Extent.js";

CDN: const Extent = await $arcgis.import("@arcgis/core/geometry/Extent.js");

Class: @arcgis/core/geometry/Extent

Since: ArcGIS Maps SDK for JavaScript 4.0

The minimum and maximum X and Y coordinates of a bounding box. Extent is used to describe the visible portion of a MapView. When working in a SceneView, Camera is used to define the visible part of the map within the view.

See also

Constructors

Extent Constructor new Extent(properties)

Parameter

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 Watch for changes topic.

Show inherited properties Hide inherited properties

Property Details

cache Inherited Property cache Objectreadonly: The cache is used to store values computed from geometries that need to be cleared or recomputed upon mutation. An example is the extent of a polygon.

center Property center Pointreadonly: The center point of the extent in map units.

declaredClass Inherited Property declaredClass Stringreadonly 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.

: The extent of the geometry. For a point, the extent is null.

: Indicates if the geometry has M values.

Indicates if the geometry has z-values (elevation).

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.

height Property height Numberreadonly: The height of the extent in map units (the distance between ymin and ymax).

: The maximum possible m value in an extent envelope.

: The minimum possible m value of an extent envelope.

The spatial reference of the geometry.

Default Value:SpatialReference.WGS84 // wkid: 4326

type Property type Stringreadonly: For Extent the type is always "extent".

width Property width Numberreadonly: The width of the extent in map units (the distance between xmin and xmax).

: The maximum X-coordinate of an extent envelope.

: The minimum X-coordinate of an extent envelope.

: The maximum Y-coordinate of an extent envelope.

: The minimum Y-coordinate of an extent envelope.

The maximum possible z, or elevation, value in an extent envelope.

The minimum possible z, or elevation, value of an extent envelope.

Method Overview

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Method Details

addHandles Inherited Method addHandles(handleOrHandles, groupKey) 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

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.

centerAt Method centerAt(point){Extent}

Centers the extent to the specified Point. This method modifies the extent geometry in-place. You should clone the extent object before calling this method where appropriate.

Parameter

The point to center the extent.

Returns

Type Description Extent The new extent with point as the center.

Creates a deep clone of Extent object.

Returns

Type Description Extent A new instance of a Extent object equal to the object used to call .clone().

contains Method contains(geometry){Boolean}

Checks if the input geometry is contained within the extent.

Parameter

Input geometry to test if it is contained within the extent.

Returns

Type Description Boolean Returns true if the input geometry is contained within the extent.

equals Method equals(extent){Boolean}

Indicates if the input extent is equal to the testing extent.

Returns

Type Description Boolean Returns true if the input extent is equal to the extent that calls equals().

expand Method expand(factor){Extent}

Expands the extent by the given factor. For example, a value of 1.5 will expand the extent to be 50 percent larger than the original extent. This method modifies the extent geometry in-place. You should clone the extent object before calling this method where appropriate.

Returns

Type Description Extent Returns the expanded extent.

fromJSON Inherited Method fromJSON(json){* |null |undefined}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.

Returns

Type Description * | null | undefined Returns a new instance of this class.

hasHandles Inherited Method hasHandles(groupKey){Boolean} 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");
}

Shrinks the original extent to the intersection with the input extent.

This method modifies the extent geometry in-place. You should clone the extent object before calling this method where appropriate. If the original extent and the input extent have no intersection, the extent is not modified and null is returned.

Returns

Type Description Extent | null | undefined The intersection of the input Extent with the original Extent or null.

intersects Method intersects(geometry){Boolean}

Tests to validate if the input geometry intersects the extent and returns a Boolean value.

Returns

Type Description Boolean Returns true, if the input geometry intersects the extent.

Returns an array with either one Extent that's been shifted to within +/- 180 or two Extents if the original extent intersects the International Dateline.

This method modifies the extent geometry in-place. You should clone the extent object before calling this method where appropriate.

Returns

Type Description Extent [] The normalized Extent(s).

offset Method offset(dx, dy, dz){Extent}

Modifies the extent geometry in-place with X and Y offsets in map units. You should clone the extent object before calling this method where appropriate.

Parameters

The offset distance in map units for the X-coordinate.

The offset distance in map units for the Y-coordinate.

optional

The offset distance in map units for the Z-coordinate.

Returns

Type Description Extent The offset Extent.

removeHandles Inherited Method removeHandles(groupKey) 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");

union Method union(extent){Extent}

Expands the original extent to include the extent of the input Extent. This method modifies the extent geometry in-place. You should clone the extent object before calling this method where appropriate.

Parameter

The input extent to union.

Returns

Type Description Extent The union of the input Extent with the original Extent.

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