Constructor LocationViewshed

LocationViewshed(Camera, Double, Double)

Initializes a new instance of the LocationViewshed class.

Declaration

public LocationViewshed(Camera camera, double minDistance, double maxDistance)

Parameters

Type	Name	Description
Camera	camera	A Camera to define the frustum of the viewshed. The camera location is that of the observer.
System.Double	minDistance	The minimum distance from the observer at which visibility will be evaluated.
System.Double	maxDistance	The maximum distance from the observer at which visibility will be evaluated.

Applies to

Platforms and versions

Target	Versions
.NET Standard 2.0	100.3 - 200.6
.NET	100.13 - 200.6
.NET Windows	100.13 - 200.6
.NET Android	200.0 - 200.6
.NET iOS	200.0 - 200.6
.NET Framework	100.2.1 - 200.6
Xamarin.Android	100.2.1 - 100.15
Xamarin.iOS	100.2.1 - 100.15
UWP	100.2.1 - 200.6

LocationViewshed(MapPoint, Double, Double, Double, Double, Double, Double)

Initializes a new instance of the LocationViewshed class whose observer is defined using a point location.

Declaration

public LocationViewshed(MapPoint location, double heading, double pitch, double horizontalAngle, double verticalAngle, double minDistance, double maxDistance)

Parameters

Type	Name	Description
MapPoint	location	A geographic point location for the observer.
System.Double	heading	The heading value (azimuth) that defines the observer's view direction.
System.Double	pitch	The pitch value (angle) of the observer's view relative to the surface. Valid values are from 0 (looking straight down) to 180 (straight up).
System.Double	horizontalAngle	The horizontal angle of the observer's view. The value must be greater than 0 and no greater than 360.
System.Double	verticalAngle	The vertical angle of the observer's view. The value must be greater than 0 and no greater than 360.
System.Double	minDistance	The minimum distance from the observer at which visibility will be evaluated.
System.Double	maxDistance	The maximum distance from the observer at which visibility will be evaluated.

Remarks

Visible and non-visible areas are determined for an area defined by the observer location, view angles, and the min/max distance range. The parameters define the frustum over which visibility is calculated from the observer location. The horizontal and vertical angles must be greater than zero to define a valid frustum and are constrained to a maximum of 360 degrees. Terrain and other obstacles between the observer and the minimum distance are excluded from the analysis, as are areas beyond the maximum distance.

Applies to

Platforms and versions

Target	Versions
.NET Standard 2.0	100.3 - 200.6
.NET	100.13 - 200.6
.NET Windows	100.13 - 200.6
.NET Android	200.0 - 200.6
.NET iOS	200.0 - 200.6
.NET Framework	100.2.1 - 200.6
Xamarin.Android	100.2.1 - 100.15
Xamarin.iOS	100.2.1 - 100.15
UWP	100.2.1 - 200.6

Relevant samples

Viewshed (location): Perform a viewshed analysis from a defined vantage point.