new CircleGesture()
Constructs a new CircleGesture object.
An uninitialized CircleGesture object is considered invalid. Get valid instances of the CircleGesture class from a Frame object.
- Source:
- gesture.js, line 157
Extends
Members
-
center :Leap.Vector
-
The center point of the circle within the Leap frame of reference.
Type:
- Source:
- gesture.js, line 183
-
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
-
normal :Leap.Vector
-
The normal vector for the circle being traced.
If you draw the circle clockwise, the normal vector points in the same general direction as the pointable object drawing the circle. If you draw the circle counterclockwise, the normal points back toward the pointable. If the angle between the normal and the pointable object drawing the circle is less than 90 degrees, then the circle is clockwise.
var clockwiseness; if (circle.pointable.direction.angleTo(circle.normal) <= PI/4) { clockwiseness = "clockwise"; } else { clockwiseness = "counterclockwise"; }
Type:
- Source:
- gesture.js, line 191
-
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
-
progress :Number
-
The number of times the finger tip has traversed the circle.
Progress is reported as a positive number of the number. For example, a progress value of .5 indicates that the finger has gone halfway around, while a value of 3 indicates that the finger has gone around the the circle three times.
Progress starts where the circle gesture began. Since the circle must be partially formed before the Leap can recognize it, progress will be greater than zero when a circle gesture first appears in the frame.
Type:
- Number
- Source:
- gesture.js, line 216
-
radius :Number
-
The radius of the circle in mm.
Type:
- Number
- Source:
- gesture.js, line 234
-
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