UITouch.GetAzimuthAngle(UIView) Method

Reference

Definition

Namespace:: UIKit

Assembly:: Xamarin.iOS.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Returns the rotation of the stylus relative to the plane of the screen, in radians.

[Foundation.Export("azimuthAngleInView:")]
[ObjCRuntime.Introduced(ObjCRuntime.PlatformName.iOS, 9, 1, ObjCRuntime.PlatformArchitecture.All, null)]
[ObjCRuntime.Unavailable(ObjCRuntime.PlatformName.TvOS, ObjCRuntime.PlatformArchitecture.All, null)]
public virtual nfloat GetAzimuthAngle (UIKit.UIView view);

abstract member GetAzimuthAngle : UIKit.UIView -> nfloat
override this.GetAzimuthAngle : UIKit.UIView -> nfloat

Parameters

view: UIView

The UIView whose Transform defines the relative angle to be returned.

This parameter can be null.

Returns

nfloat

The default value is 0. The value returned is in the range [-π, +π]

Attributes: ExportAttribute IntroducedAttribute UnavailableAttribute

Remarks

On supported hardware (see EstimatedProperties), this value returns the rotation, in radians, of the touching device (e.g., Apple Pencil) relative to the plane of the screen and the Transform of the view. If view is null or uses the default transform, 0 radians corresponds to the right-hand side of the UIView, π radians correspond to the bottom of the UIView and so forth. (Note that in the default transform, Y increases towards the bottom of the view, so radians increase clockwise.)

This method is slightly more expensive than GetAzimuthUnitVector(UIView).

Applies to

Поделиться через