ViewshedAnalysisView3D | API Reference | ArcGIS Maps SDK for JavaScript 4.30

Represents the analysis view of a ViewshedAnalysis after it has been added to SceneView.analyses.

The ViewshedAnalysisView3D is responsible for rendering a ViewshedAnalysis using custom visualizations.

The view for an analysis can be retrieved using SceneView.whenAnalysisView similar to how layer views are retrieved for layers using SceneView.whenLayerView.

The viewshed analysis view controls whether the viewsheds in their associated analysis can be created or edited interactively.

 // create new analysis and add it to the scene view
 const viewshedAnalysis = new ViewshedAnalysis();
 sceneView.analyses.add(viewshedAnalysis);
 // retrieve analysis view
 view.whenAnalysisView(viewshedAnalysis).then(viewshedAnalysisView => {
   // allow existing viewsheds in the analysis to be edited by selecting them
   viewshedAnalysisView.interactive = true;
   // start adding new viewsheds interactively
   viewshedAnalysisView.createLengthDimensions();
 });

Property Overview

Type	Summary	Class
ViewshedAnalysis	The viewshed analysis object associated with the analysis view.	ViewshedAnalysisView3D
Boolean	Set to `true` to enable interactivity for the associated ViewshedAnalysis.	ViewshedAnalysisView3D
Viewshed	The selected viewshed.	ViewshedAnalysisView3D
String	The analysis view type.	ViewshedAnalysisView3D
Boolean	When `true`, the analysis is visualized in the view.	ViewshedAnalysisView3D

Property Details

analysis Property analysis ViewshedAnalysisreadonly

The viewshed analysis object associated with the analysis view.

interactive Property interactive Boolean

Set to true to enable interactivity for the associated ViewshedAnalysis. If the analysis has a valid shape defined, then manipulators will be shown which the user can click and drag in order to edit the analysis.

Default Value:false

selectedViewshed Property selectedViewshed Viewshed

The selected viewshed. If interactive is true, any viewshed in the analysis can be selected by clicking on it in the view. As long as interactive remains true, the properties of the selected dimension can be edited by interacting with manipulators in the view.

type Property type Stringreadonly

The analysis view type.

For ViewshedAnalysisView3D the type is always "viewshed-view-3d".

visible Property visible Boolean

When true, the analysis is visualized in the view.

Method Overview

Name	Return Type	Summary	Class
	Promise	Starts the interactive creation of new viewsheds and adds them to the analysis.	ViewshedAnalysisView3D

Method Details

createViewsheds Method createViewsheds(options){Promise}

Starts the interactive creation of new viewsheds and adds them to the analysis. The first click in the scene places the observer point and the second sets the viewshed's orientation.

The creation process will finish when the user double-clicks the mouse or presses the escape key. In order to otherwise stop the creation process, pass an abort signal as an argument when calling the method.

let abortController;
view.whenAnalysisView(viewshedAnalysis).then(viewshedAnalysisView => {
   // create a new controller
   abortController = new AbortController();
   // pass the controller as an argument to the interactive creation method
   viewshedAnalysisView.createViewsheds(abortController);
   // abort the controller to stop the creation process
   abortController.abort();
});

Calling this method sets interactive to true.

Note that when placing viewsheds interactively, the viewshed is created with a 2-meter vertical offset from the scene. This behavior is subject to change in a future release.

Parameters

options Object

optional

An object specifying additional options.

Specification

signal AbortSignal

optional

Abort signal which can be used to cancel creation.

Returns

Type	Description
Promise	A promise which resolves when creation is completed, or rejects if creation is cancelled.