MLKitDigitalInkRecognition Framework Reference

StrokePoint

class StrokePoint : NSObject

A single touch point from the user.

• x

  Horizontal coordinate. Increases to the right.

  Declaration

  Swift

  var x: Float { get }

• y

  Vertical coordinate. Increases downward.

  Declaration

  Swift

  var y: Float { get }

• t

  Time when the point was recorded, in milliseconds.

  Declaration

  Swift

  var t: NSNumber? { get }

• -init

  Unavailable. Use init(x:y:t:) instead.

• init(x:y:t:)

  Creates a StrokePoint object using the coordinates provided as argument.

  Scales on both dimensions are arbitrary but be must be identical: a displacement of 1 horizontally or vertically must represent the same distance, as seen by the user.

  Spatial and temporal origins can be arbitrary as long as they are consistent for a given ink.

  Declaration

  Swift

  init(x: Float, y: Float, t: Int)

  Parameters

  x	Horizontal coordinate. Increases to the right.
  y	Vertical coordinate. Increases going downward.
  t	Time when the point was recorded, in milliseconds.

• init(x:y:)

  Creates a StrokePoint object using the coordinates provided as argument, without specifying a timestamp. This method should only be used when it is not feasible to include the timestamp information, as the recognition accuracy might degrade.

  Scales on both dimensions are arbitrary but be must be identical: a displacement of 1 horizontally or vertically must represent the same distance, as seen by the user.

  Spatial origin can be arbitrary as long as it is consistent for a given ink.

  Declaration

  Swift

  init(x: Float, y: Float)

  Parameters

  x	horizontal coordinate. Increases to the right.
  y	vertical coordinate. Increases going downward.