Attributes:
Extends Gesture.
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.
Important: To use key tap gestures in your application, you must enable recognition of the key tap gesture. You can enable recognition with:
controller.enable_gesture(Leap.Gesture.TYPE_KEY_TAP);
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.
You can set the minimum finger movement and velocity required for a movement to be recognized as a key tap as well as adjust the detection window for evaluating the movement using the config attribute of a connected Controller object. Use the following configuration keys to configure key tap recognition:
Key string | Value type | Default value | Units |
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Gesture.KeyTap.MinDownVelocity | float | 50 | mm/s |
Gesture.KeyTap.HistorySeconds | float | 0.1 | s |
Gesture.KeyTap.MinDistance | float | 3.0 | mm |
The following example demonstrates how to set the key tap configuration parameters:
controller.config.set("Gesture.KeyTap.MinDownVelocity", 40.0)
controller.config.set("Gesture.KeyTap.HistorySeconds", .2)
controller.config.set("Gesture.KeyTap.MinDistance", 1.0)
controller.config.save()
New in version 1.0.
Constructs a KeyTapGesture object from an instance of the Gesture class.
for gesture in frame.gestures():
if gesture.type is Leap.Gesture.TYPE_KEY_TAP:
key_tap = Leap.KeyTapGesture(gesture)
Parameters: | gesture (Gesture) – The Gesture instance to specialize. This Gesture instance must be a KeyTapGesture object. If no argument is supplied, an invalid KeyTapGesture object is created. |
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New in version 1.0.
- position¶
Type: Vector The position where the key tap is registered.
tap_point = key_tap.positionNew in version 1.0.
- direction¶
Type: Vector The direction of finger tip motion. If the finger is stationary, at the time this gesture object is recorded, then the direction will be a zero vector.
tap_direction = key_tap.directionNew in version 1.0.
- progress¶
Type: float The progess value is always 1.0 for a key tap gesture.
New in version 1.0.
Type: | integer The key tap gesture type designator: Gesture.TYPE_KEY_TAP New in version 1.0. |
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