Method ScreenToLocationAsync

ScreenToLocationAsync(Point)

Async method to convert a screen point relative to the upper left of the SceneView into a location accounting for 3D features within the Scene.

Declaration

public Task<MapPoint> ScreenToLocationAsync(Point screenPoint)

Parameters

Type	Name	Description
Xamarin.Forms.Point	screenPoint	Screen point relative to the upper left

Returns

Type	Description
System.Threading.Tasks.Task<MapPoint>	A MapPoint on the base surface of the Scene, if this view is initialized and has a loaded scene; otherwise `null`. This may also return `null` if the given `screenPoint` is not on the base surface at all (for example, if the sky is drawn at those coordinates).

Remarks

This method checks for intersection between the input screen point and visible 3D features on the Scene. It returns a point with X, Y and Z values matching the intersection point. If the input point does not intersect a visible 3D feature, the Scene Surface is used to retrieve the point values. If the input point does not intersect the Scene Surface or any visible 3D features a null value is returned.

This method differs from ScreenToBaseSurface(Point) in that the latter only uses the Scene Surface and ignores visible 3D features. The algorithm is inherently slower than ScreenToBaseSurface and is therefore an async operation.

Applies to

Platforms and versions

Target	Versions
.NET Standard 2.0	100.3 - 100.15
Xamarin.Android	100.0 - 100.15
Xamarin.iOS	100.0 - 100.15
UWP	100.0 - 100.15