Viewpoint QML Type

Base type for types describing the user's viewpoint when viewing a map or scene. More...

• List of all members, including inherited members

Properties

• camera : Camera
• json : jsobject
• rotation : string
• unknownJson : jsobject
• unsupportedJson : jsobject
• viewpointType : Enums.ViewpointType

Signals

• cameraChanged()
• rotationChanged()

Detailed Description

Use a Viewpoint to specify how a user sees a 2D Map or 3D Scene displayed in a MapView or SceneView. The Viewpoint controls multiple aspects of the view such as extent, rotation, and with 3D viewing angle and field of view.

Instances of ViewpointCenter and ViewpointExtent are immutable.

A Viewpoint contains two views

A Viewpoint object contains two views - one 2D and one 3D. A Viewpoint object stores the 3D view in a Camera member object. The 2D and 3D views need not view the same location. Viewpoints also contain 2D view information like scale, extent, and rotation, even when Camera information is not present. When a Viewpoint is passed from one SceneView to another, only the 3D information (if present) and time are used. When a SceneView receives a Viewpoint that has no Camera (such as a Viewpoint retrieved from a MapView) the SceneView approximates the 3D viewpoint information from the 2D viewpoint information.

Example:

Create a viewpoint based on a point and programmatically zoom to it:

var soCalPoint = ArcGISRuntimeEnvironment.createObject("Point", {x: -117, y: 34, spatialReference: Factory.SpatialReference.createWgs84()});
var soCalViewpoint = ArcGISRuntimeEnvironment.createObject("ViewpointCenter", {center: soCalPoint, targetScale: 500000});
mapView.setViewpoint(soCalViewpoint);

See also JsonSerializable, MapView, ViewpointCenter, and ViewpointExtent.

Property Documentation

Signal Documentation