ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Desktop.Mapping Namespace / LineOfSightParams Class / LineOfSightParams Constructor / LineOfSightParams Constructor(MapPoint,MapPoint,Double,Double,SpatialReference)
The observer point.
The target point.
The observer height offset.
The target height offset.
The output spatial reference.
Example Version

LineOfSightParams Constructor(MapPoint,MapPoint,Double,Double,SpatialReference)
Constructor overload. Initialize a new instance of LineOfSightParams.
Syntax

Parameters

observerPoint
The observer point.
targetPoint
The target point.
observerHeightOffset
The observer height offset.
targetHeightOffset
The target height offset.
outputSpatialReference
The output spatial reference.
Example
Get Line of Sight
var losParams = new LineOfSightParams();
losParams.ObserverPoint = observerPoint;
losParams.TargetPoint = targetPoint;

// add offsets if appropriate
// losParams.ObserverHeightOffset = observerOffset;
// losParams.TargetHeightOffset = targerOffset;

// set output spatial reference
losParams.OutputSpatialReference = MapView.Active.Map.SpatialReference;

LineOfSightResult results = null;
try
{
  if (tinLayer.CanGetLineOfSight(losParams))
    results = tinLayer.GetLineOfSight(losParams);
}
catch (Exception ex)
{
  // log exception message
}

if (results != null)
{
  bool targetIsVisibleFromObserverPoint = results.IsTargetVisibleFromObserverPoint;
  //These properties are not used. They will always be false
  // results.IsTargetVisibleFromVisibleLine;
  // results.IsTargetVisibleFromInvisibleLine;


  if (results.VisibleLine != null)
    MapView.Active.AddOverlay(results.VisibleLine, visibleLineSymbol.MakeSymbolReference());
  if (results.InvisibleLine != null)
    MapView.Active.AddOverlay(results.VisibleLine, invisibleLineSymbol.MakeSymbolReference());
  if (results.ObstructionPoint != null)
    MapView.Active.AddOverlay(results.ObstructionPoint, obstructionPointSymbol.MakeSymbolReference());
}
Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3.2 or higher.
See Also