Viewpoint QML Type
Defines the visible area of a GeoModel that is displayed in a GeoView on a user's screen. More...
| Import Statement: | import Esri.ArcGISRuntime |
| Since: | Esri.ArcGISRuntime 100.0 |
| Inherits: | |
| Inherited By: |
- List of all members, including inherited members
- Viewpoint is part of QML Type List.
Properties
- camera : Camera
- json : jsobject
- rotation : string
- unknownJson : jsobject
- unsupportedJson : jsobject
- viewpointType : Enums.ViewpointType
Signals
Methods
- bool equals(Viewpoint other)
Detailed Description
In a MapView, the bounding extent of a geometry or the map's center point and scale can define the map view's two-dimensional Viewpoint.
In a SceneView, a Camera represents the observer's position and perspective within three dimensions and defines the scene view's three-dimensional Viewpoint. Each camera has the following properties:
- Geographic location on the surface (longitude and latitude).
- Altitude (height, in meters, above sea level).
- Heading (angle about the z axis the camera is rotated, in degrees).
- Pitch (angle the camera is rotated up or down, in degrees).
- Roll (angle the camera is rotated side-to-side, in degrees).
When you publish or save a map or scene, as a web map, web scene, mobile map package, or mobile scene package, you define its initial Viewpoint. When you load a map or scene into your app, you can access and change the value of this GeoModel::initialViewpoint. If you add the map or scene to a GeoView, any change you make to the GeoModel::initialViewpoint is ignored. To change the Viewpoint of a displayed map or scene, use view methods such as:
- GeoView::setViewpoint to instantly change the visible area with no animation.
- MapView::setViewpointWithAnimationCurve to animates the display of the map to a viewpoint using the provided animation curve.
- SceneView::setViewpointCamera to instantly moving the perspective in 3D scenes.
To determine the current visible area, call GeoView::currentViewpointExtent. Make sure that any user-initiated or programmatic navigation is complete before getting the current Viewpoint by calling GeoView::navigating.
See also JsonSerializable.
Property Documentation
json : jsobject |
The JSON representing this Viewpoint.
rotation : string |
The viewpoint rotation angle in degrees between 0 and 360 (read-only).
See also Viewpoint.
[read-only] unknownJson : jsobject |
Returns the unknown JSON from the source JSON.
Unknown JSON is a jsobject of values not defined in the ArcGIS specification used to create this object but found in the source JSON. If the object is written back to JSON, any unknown JSON data is not persisted. The ArcGIS specification may be for a web map, web scene, REST API, and so on.
[read-only] unsupportedJson : jsobject |
Returns the unsupported data from the source JSON.
See also JsonSerializable.
[read-only] viewpointType : Enums.ViewpointType |
Returns the Enums.ViewpointType of this Viewpoint (read-only).
This will be defined by a geometry or a Point geometry and scale.
See also Viewpoint.
Signal Documentation
|
Emitted when the camera property changes.
Note: This signal will only be emitted when the property initializes during the instantiation of the component.
Note: The corresponding handler is onCameraChanged.
This signal was introduced in Esri.ArcGISRuntime 100.4.
|
Emitted when the rotation property changes.
Note: This signal will only be emitted when the property initializes during the instantiation of the component.
Note: The corresponding handler is onRotationChanged.
This signal was introduced in Esri.ArcGISRuntime 100.4.
Method Documentation
|
Compares two Viewpoints for equality.
Returns whether this instance and other are equivalent.
This method was introduced in Esri.ArcGISRuntime 200.1.