Class: KeyTapGesture

Leap. KeyTapGesture

The KeyTapGesture class represents a tapping gesture by a finger or tool.

A key tap gesture is recognized when the tip of a finger rotates down toward the palm and then springs back to approximately the original postion, as if tapping. The tapping finger must pause briefly before beginning the tap.

KeyTap

Key tap gestures are discrete. The KeyTapGesture object representing a tap always has the state, STATE_STOP. Only one KeyTapGesture object is created for each key tap gesture recognized.

new KeyTapGesture()

Constructs a new KeyTapGesture object.

An uninitialized KeyTapGesture object is considered invalid. Get valid instances of the KeyTapGesture class from a Frame object.

Source:
  • gesture.js, line 352

Extends

Members

direction :Leap.Vector

The direction of finger tip motion.

Type:
Source:
  • gesture.js, line 383

duration :Number

The elapsed duration of the recognized movement up to the frame containing this Gesture object, in microseconds.

The duration reported for the first Gesture in the sequence (with the start state) will typically be a small positive number since the movement must progress far enough for the Leap to recognize it as an intentional gesture.

Type:
  • Number
Inherited From:
Source:
  • gesture.js, line 107

handIds :Array

The list of hands associated with this Gesture, if any.

If no hands are related to this gesture, the list is empty.

Type:
  • Array
Inherited From:
Source:
  • gesture.js, line 87

id :Number

The gesture ID.

All Gesture objects belonging to the same recognized movement share the same ID value. Use the ID value with the Frame::gesture() method to find updates related to this Gesture object in subsequent frames.

Type:
  • Number
Inherited From:
Source:
  • gesture.js, line 75

pointableIds :Array

The list of fingers and tools associated with this Gesture, if any.

If no Pointable objects are related to this gesture, the list is empty.

Type:
  • Array
Inherited From:
Source:
  • gesture.js, line 97

position :Leap.Vector

The position where the key tap is registered.

Type:
Source:
  • gesture.js, line 375

progress :Number

The progess value is always 1.0 for a key tap gesture.

Type:
  • Number
Source:
  • gesture.js, line 391

state :String

The gesture ID.

Recognized movements occur over time and have a beginning, a middle, and an end. The 'state()' attribute reports where in that sequence this Gesture object falls.

Possible values for the state field are:

  • start
  • update
  • stop
Type:
  • String
Inherited From:
Source:
  • gesture.js, line 121

type :String

The gesture type.

Possible values for the type field are:

  • circle
  • swipe
  • screenTap
  • keyTap
Type:
  • String
Inherited From:
Source:
  • gesture.js, line 139