Properties:
Methods:
The LeapCircleGesture classes represents a circular finger movement.
Public FunctionsProperty- (BOOL) equals:(const LeapGesture *) otherCompare LeapGesture object equality.
[thisGesture equals:thatGesture];
- Parameters
- other -
The LeapGesture object to compare.
Public Static Functionscenter- (LeapVector *) centerThe center point of the circle within the Leap frame of reference.
LeapVector *centerPoint = circleGesture.center;
- Return
- LeapVector The center of the circle in mm from the Leap origin.
duration- (int64_t) durationThe elapsed duration of the recognized movement up to the frame containing this LeapGesture object, in microseconds.
int64_t microseconds = gesture.duration;
- Return
- int64_t the elapsed duration in microseconds.
durationSeconds- (float) durationSecondsThe elapsed duration in seconds.
float seconds = gesture.duration;
- See
- duration
- Return
- float the elapsed duration in seconds.
frame- (LeapFrame *) frameThe LeapFrame containing this LeapGesture instance.
LeapFrame *owningFrame = gesture.frame;
- Return
- The parent LeapFrame object.
hands- (NSArray *) handsThe list of hands associated with this LeapGesture, if any.
NSArray *handList = gesture.hands; //Only one hand for current gestures LeapHand *gesturingHand = [handList objectAtIndex:0];
- Return
- NSArray the list of related LeapHand objects.
id- (int32_t) idisValid- (BOOL) isValidReports whether this LeapGesture instance represents a valid gesture.
LeapFrame *frame = [controller frame:0]; LeapGesture *trackedGesture = [frame gesture:trackedGestureID]; if(trackedGesture.isValid) { //Use the data... }
- Return
- bool Yes, if this is a valid LeapGesture instance; NO, otherwise.
normal- (LeapVector *) normalReturns the normal vector for the circle being traced.
NSString* clockDirection; if ([[[circleGesture pointable] direction] angleTo:[circleGesture normal]] <= LEAP_PI/2) { clockDirection = @"clockwise"; } else { clockDirection = @"counterclockwise"; }
- Return
- LeapVector the normal vector for the circle being traced
pointable- (LeapPointable *) pointableThe finger performing the circle gesture.
LeapPointable *circlingPointable = circleGesture.pointable;
- Return
- A LeapPointable object representing the circling finger.
pointables- (NSArray *) pointablesThe list of fingers and tools associated with this LeapGesture, if any.
NSArray *pointableList = gesture.pointables; //Only one pointable for current gestures LeapHand *gesturingPointable = [pointableList objectAtIndex:0];
- Return
- NSArray the list of related LeapPointable objects.
progress- (float) progressThe number of times the finger tip has traversed the circle.
int revolutions = floor(circleGesture.progress);
- Return
- float A positive number indicating the gesture progress.
radius- (float) radiusThe radius of the circle.
float currentRadius = circleGesture.radius;
- Return
- The circle radius in mm.
state- (LeapGestureState) stateThe gesture state.
- Return
- LeapGestureState A value from the LeapGestureState enumeration.
type- (LeapGestureType) typeThe gesture type.
LeapGestureType type = gesture.type;
- Return
- LeapGestureType A value from the LeapGestureType enumeration.
+ (LeapGesture *) invalidReturns an invalid LeapGesture object.
LeapGesture *wrongGesture = LeapGesture.invalid;
- Return
- The invalid LeapGesture instance.