LineOfSightAnalysis

// create lineofsight analysis
const lineOfSightAnalysis = new LineOfSightAnalysis({
  observer: new LineOfSightAnalysisObserver({ position: somePoint),
  targets:[
    new LineOfSightAnalysisTarget({position: someOtherPoint})
  ]
});

// add to scene view
view.analyses.add(lineOfSightAnalysis);

// wait for the view to load before checking the result
await reactiveUtils.whenOnce(() => !view.updating);

// retrieve measured results from analysis view
const analysisView = await view.whenAnalysisView(lineOfSightAnalysis);
const results = analysisView.results;

Property Overview

Property Details

declaredClass Stringreadonly inherited

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

observer LineOfSightAnalysisObserverautocast

Observer location. This is the point from which line of sight analysis is performed.

targets Collection<LineOfSightAnalysisTarget>autocast

Target locations. A list of points to look at from the observer.

Method Overview

Method Details

addHandles(handleOrHandles, groupKey)inherited

Since: ArcGIS API for JavaScript 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 }
);

// Handle gets removed when the object is destroyed.
this.addHandles(handle);

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(){this}

Creates a deep clone of this object. Any properties that store values by reference will be assigned copies of the referenced values on the cloned instance.

Returns

Type	Description
this	A deep clone of the class instance that invoked this method.

hasHandles(groupKey){Boolean}inherited

Since: ArcGIS API for JavaScript 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(groupKey)inherited

Since: ArcGIS API for JavaScript 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");